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- /* vi:set ts=8 sts=4 sw=4:
- *
- * VIM - Vi IMproved by Bram Moolenaar
- *
- * Do ":help uganda" in Vim to read copying and usage conditions.
- * Do ":help credits" in Vim to see a list of people who contributed.
- * See README.txt for an overview of the Vim source code.
- */
-
- /*
- * screen.c: code for displaying on the screen
- *
- * Output to the screen (console, terminal emulator or GUI window) is minimized
- * by remembering what is already on the screen, and only updating the parts
- * that changed.
- *
- * ScreenLines[] contains a copy of the whole screen, as it is currently
- * displayed (excluding text written by external commands).
- * ScreenAttrs[] contains the associated attributes.
- * LineOffset[] contains the offset into ScreenLines[] for each line.
- * For double-byte characters, two consecutive bytes in ScreenLines[] can form
- * one character which occupies two display cells.
- * For UTF-8 a multi-byte character is converted to Unicode and stored in
- * ScreenLinesUC[]. ScreenLines[] contains the first byte only. For an ASCII
- * character without composing chars ScreenLinesUC[] will be 0. When the
- * character occupies two display cells the next byte in ScreenLines[] is 0.
- * ScreenLinesC1[] and ScreenLinesC2[] contain up to two composing characters
- * (drawn on top of the first character). They are 0 when not used.
- * ScreenLines2[] is only used for euc-jp to store the second byte if the
- * first byte is 0x8e (single-width character).
- *
- * The screen_*() functions write to the screen and handle updating
- * ScreenLines[].
- *
- * update_screen() is the function that updates all windows and status lines.
- * It is called form the main loop when must_redraw is non-zero. It may be
- * called from other places when an immediated screen update is needed.
- *
- * The part of the buffer that is displayed in a window is set with:
- * - w_topline (first buffer line in window)
- * - w_topfill (filler line above the first line)
- * - w_leftcol (leftmost window cell in window),
- * - w_skipcol (skipped window cells of first line)
- *
- * Commands that only move the cursor around in a window, do not need to take
- * action to update the display. The main loop will check if w_topline is
- * valid and update it (scroll the window) when needed.
- *
- * Commands that scroll a window change w_topline and must call
- * check_cursor() to move the cursor into the visible part of the window, and
- * call redraw_later(VALID) to have the window displayed by update_screen()
- * later.
- *
- * Commands that change text in the buffer must call changed_bytes() or
- * changed_lines() to mark the area that changed and will require updating
- * later. The main loop will call update_screen(), which will update each
- * window that shows the changed buffer. This assumes text above the change
- * can remain displayed as it is. Text after the change may need updating for
- * scrolling, folding and syntax highlighting.
- *
- * Commands that change how a window is displayed (e.g., setting 'list') or
- * invalidate the contents of a window in another way (e.g., change fold
- * settings), must call redraw_later(NOT_VALID) to have the whole window
- * redisplayed by update_screen() later.
- *
- * Commands that change how a buffer is displayed (e.g., setting 'tabstop')
- * must call redraw_curbuf_later(NOT_VALID) to have all the windows for the
- * buffer redisplayed by update_screen() later.
- *
- * Commands that move the window position must call redraw_later(NOT_VALID).
- * TODO: should minimize redrawing by scrolling when possible.
- *
- * Commands that change everything (e.g., resizing the screen) must call
- * redraw_all_later(NOT_VALID) or redraw_all_later(CLEAR).
- *
- * Things that are handled indirectly:
- * - When messages scroll the screen up, msg_scrolled will be set and
- * update_screen() called to redraw.
- */
-
- #include "vim.h"
-
- /*
- * The attributes that are actually active for writing to the screen.
- */
- static int screen_attr = 0;
-
- /*
- * Positioning the cursor is reduced by remembering the last position.
- * Mostly used by windgoto() and screen_char().
- */
- static int screen_cur_row, screen_cur_col; /* last known cursor position */
-
- #ifdef FEAT_SEARCH_EXTRA
- /*
- * Struct used for highlighting 'hlsearch' matches for the last use search
- * pattern or a ":match" item.
- * For 'hlsearch' there is one pattern for all windows. For ":match" there is
- * a different pattern for each window.
- */
- typedef struct
- {
- regmmatch_T rm; /* points to the regexp program; contains last found
- match (may continue in next line) */
- buf_T *buf; /* the buffer to search for a match */
- linenr_T lnum; /* the line to search for a match */
- int attr; /* attributes to be used for a match */
- int attr_cur; /* attributes currently active in win_line() */
- linenr_T first_lnum; /* first lnum to search for multi-line pat */
- char_u *startp; /* in win_line() points to char where HL starts */
- char_u *endp; /* in win_line() points to char where HL ends */
- } match_T;
-
- static match_T search_hl; /* used for 'hlsearch' highlight matching */
- static match_T match_hl; /* used for ":match" highlight matching */
- #endif
-
- #ifdef FEAT_FOLDING
- static foldinfo_T win_foldinfo; /* info for 'foldcolumn' */
- #endif
-
- /*
- * Buffer for one screen line (characters and attributes).
- */
- static schar_T *current_ScreenLine;
-
- static void win_update __ARGS((win_T *wp));
- static void win_draw_end __ARGS((win_T *wp, int c1, int c2, int row, int endrow, enum hlf_value hl));
- #ifdef FEAT_FOLDING
- static void fold_line __ARGS((win_T *wp, long fold_count, foldinfo_T *foldinfo, linenr_T lnum, int row));
- static void fill_foldcolumn __ARGS((char_u *p, win_T *wp, int closed, linenr_T lnum));
- static void copy_text_attr __ARGS((int off, char_u *buf, int len, int attr));
- #endif
- static int win_line __ARGS((win_T *, linenr_T, int, int));
- static int char_needs_redraw __ARGS((int off_from, int off_to, int cols));
- #ifdef FEAT_RIGHTLEFT
- static void screen_line __ARGS((int row, int coloff, int endcol, int clear_width, int rlflag));
- # define SCREEN_LINE(r, o, e, c, rl) screen_line((r), (o), (e), (c), (rl))
- #else
- static void screen_line __ARGS((int row, int coloff, int endcol, int clear_width));
- # define SCREEN_LINE(r, o, e, c, rl) screen_line((r), (o), (e), (c))
- #endif
- #if defined(FEAT_WILDMENU) && defined(FEAT_VERTSPLIT)
- static void win_redraw_last_status __ARGS((frame_T *frp));
- #endif
- #ifdef FEAT_VERTSPLIT
- static void draw_vsep_win __ARGS((win_T *wp, int row));
- #endif
- #ifdef FEAT_SEARCH_EXTRA
- static void start_search_hl __ARGS((void));
- static void end_search_hl __ARGS((void));
- static void prepare_search_hl __ARGS((win_T *wp, linenr_T lnum));
- static void next_search_hl __ARGS((win_T *win, match_T *shl, linenr_T lnum, colnr_T mincol));
- #endif
- static void screen_start_highlight __ARGS((int attr));
- static void screen_char __ARGS((unsigned off, int row, int col));
- #ifdef FEAT_MBYTE
- static void screen_char_2 __ARGS((unsigned off, int row, int col));
- #endif
- static void screenclear2 __ARGS((void));
- static void lineclear __ARGS((unsigned off, int width));
- static void lineinvalid __ARGS((unsigned off, int width));
- #ifdef FEAT_VERTSPLIT
- static void linecopy __ARGS((int to, int from, win_T *wp));
- static void redraw_block __ARGS((int row, int end, win_T *wp));
- #endif
- static int win_do_lines __ARGS((win_T *wp, int row, int line_count, int mayclear, int del));
- static void win_rest_invalid __ARGS((win_T *wp));
- static int screen_ins_lines __ARGS((int, int, int, int, win_T *wp));
- static void msg_pos_mode __ARGS((void));
- #if defined(FEAT_WINDOWS) || defined(FEAT_WILDMENU) || defined(FEAT_STL_OPT)
- static int fillchar_status __ARGS((int *attr, int is_curwin));
- #endif
- #ifdef FEAT_VERTSPLIT
- static int fillchar_vsep __ARGS((int *attr));
- #endif
- #ifdef FEAT_STL_OPT
- static void win_redr_custom __ARGS((win_T *wp, int Ruler));
- #endif
- #ifdef FEAT_CMDL_INFO
- static void win_redr_ruler __ARGS((win_T *wp, int always));
- #endif
-
- #if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT)
- /* Ugly global: overrule attribute used by screen_char() */
- static int screen_char_attr = 0;
- #endif
-
- /*
- * Redraw the current window later, with update_screen(type).
- * Set must_redraw only if not already set to a higher value.
- * e.g. if must_redraw is CLEAR, type NOT_VALID will do nothing.
- */
- void
- redraw_later(type)
- int type;
- {
- redraw_win_later(curwin, type);
- }
-
- void
- redraw_win_later(wp, type)
- win_T *wp;
- int type;
- {
- if (wp->w_redr_type < type)
- {
- wp->w_redr_type = type;
- if (type >= NOT_VALID)
- wp->w_lines_valid = 0;
- if (must_redraw < type) /* must_redraw is the maximum of all windows */
- must_redraw = type;
- }
- }
-
- /*
- * Force a complete redraw later. Also resets the highlighting. To be used
- * after executing a shell command that messes up the screen.
- */
- void
- redraw_later_clear()
- {
- redraw_all_later(CLEAR);
- screen_attr = HL_BOLD | HL_UNDERLINE;
- }
-
- /*
- * Mark all windows to be redrawn later.
- */
- void
- redraw_all_later(type)
- int type;
- {
- win_T *wp;
-
- FOR_ALL_WINDOWS(wp)
- {
- redraw_win_later(wp, type);
- }
- }
-
- /*
- * Mark all windows that are editing the current buffer to be udpated later.
- */
- void
- redraw_curbuf_later(type)
- int type;
- {
- redraw_buf_later(curbuf, type);
- }
-
- void
- redraw_buf_later(buf, type)
- buf_T *buf;
- int type;
- {
- win_T *wp;
-
- FOR_ALL_WINDOWS(wp)
- {
- if (wp->w_buffer == buf)
- redraw_win_later(wp, type);
- }
- }
-
- /*
- * Changed something in the current window, at buffer line "lnum", that
- * requires that line and possibly other lines to be redrawn.
- * Used when entering/leaving Insert mode with the cursor on a folded line.
- * Used to remove the "$" from a change command.
- * Note that when also inserting/deleting lines w_redraw_top and w_redraw_bot
- * may become invalid and the whole window will have to be redrawn.
- */
- /*ARGSUSED*/
- void
- redrawWinline(lnum, invalid)
- linenr_T lnum;
- int invalid; /* window line height is invalid now */
- {
- #ifdef FEAT_FOLDING
- int i;
- #endif
-
- if (curwin->w_redraw_top == 0 || curwin->w_redraw_top > lnum)
- curwin->w_redraw_top = lnum;
- if (curwin->w_redraw_bot == 0 || curwin->w_redraw_bot < lnum)
- curwin->w_redraw_bot = lnum;
- redraw_later(VALID);
-
- #ifdef FEAT_FOLDING
- if (invalid)
- {
- /* A w_lines[] entry for this lnum has become invalid. */
- i = find_wl_entry(curwin, lnum);
- if (i >= 0)
- curwin->w_lines[i].wl_valid = FALSE;
- }
- #endif
- }
-
- /*
- * update all windows that are editing the current buffer
- */
- void
- update_curbuf(type)
- int type;
- {
- redraw_curbuf_later(type);
- update_screen(type);
- }
-
- /*
- * update_screen()
- *
- * Based on the current value of curwin->w_topline, transfer a screenfull
- * of stuff from Filemem to ScreenLines[], and update curwin->w_botline.
- */
- void
- update_screen(type)
- int type;
- {
- win_T *wp;
- static int did_intro = FALSE;
- #if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
- int did_one;
- #endif
-
- if (!screen_valid(TRUE))
- return;
-
- if (must_redraw)
- {
- if (type < must_redraw) /* use maximal type */
- type = must_redraw;
- must_redraw = 0;
- }
-
- /* Need to update w_lines[]. */
- if (curwin->w_lines_valid == 0 && type < NOT_VALID)
- type = NOT_VALID;
-
- if (!redrawing())
- {
- redraw_later(type); /* remember type for next time */
- must_redraw = type;
- if (type > INVERTED_ALL)
- curwin->w_lines_valid = 0; /* don't use w_lines[].wl_size now */
- return;
- }
-
- #ifdef FEAT_GUI
- updating_screen = TRUE;
- #endif
- #ifdef FEAT_SYN_HL
- ++display_tick; /* let syntax code know we're in a next round of
- * display updating */
- #endif
-
- /*
- * if the screen was scrolled up when displaying a message, scroll it down
- */
- if (msg_scrolled)
- {
- clear_cmdline = TRUE;
- if (msg_scrolled > Rows - 5) /* clearing is faster */
- type = CLEAR;
- else if (type != CLEAR)
- {
- check_for_delay(FALSE);
- if (screen_ins_lines(0, 0, msg_scrolled, (int)Rows, NULL) == FAIL)
- type = CLEAR;
- FOR_ALL_WINDOWS(wp)
- {
- if (W_WINROW(wp) < msg_scrolled)
- {
- if (W_WINROW(wp) + wp->w_height > msg_scrolled
- && wp->w_redr_type < REDRAW_TOP)
- {
- wp->w_upd_rows = msg_scrolled - W_WINROW(wp);
- wp->w_redr_type = REDRAW_TOP;
- }
- else
- {
- wp->w_redr_type = NOT_VALID;
- #ifdef FEAT_WINDOWS
- if (W_WINROW(wp) + wp->w_height + W_STATUS_HEIGHT(wp)
- <= msg_scrolled)
- wp->w_redr_status = TRUE;
- #endif
- }
- }
- }
- redraw_cmdline = TRUE;
- }
- msg_scrolled = 0;
- need_wait_return = FALSE;
- }
-
- /* reset cmdline_row now (may have been changed temporarily) */
- compute_cmdrow();
-
- /* Check for changed highlighting */
- if (need_highlight_changed)
- highlight_changed();
-
- if (type == CLEAR) /* first clear screen */
- {
- screenclear(); /* will reset clear_cmdline */
- type = NOT_VALID;
- }
-
- if (clear_cmdline) /* first clear cmdline */
- {
- check_for_delay(FALSE);
- msg_clr_cmdline(); /* will reset clear_cmdline */
- }
-
- /*
- * Only start redrawing if there is really something to do.
- */
- if (type == INVERTED)
- update_curswant();
- if (curwin->w_redr_type < type
- && !((type == VALID
- && curwin->w_lines[0].wl_valid
- #ifdef FEAT_DIFF
- && curwin->w_topfill == curwin->w_old_topfill
- && curwin->w_botfill == curwin->w_old_botfill
- #endif
- && curwin->w_topline == curwin->w_lines[0].wl_lnum)
- #ifdef FEAT_VISUAL
- || (type == INVERTED
- && curwin->w_old_cursor_lnum == curwin->w_cursor.lnum
- && curwin->w_old_visual_mode == VIsual_mode
- && (curwin->w_valid & VALID_VIRTCOL)
- && curwin->w_old_curswant == curwin->w_curswant)
- #endif
- ))
- curwin->w_redr_type = type;
-
- #ifdef FEAT_SYN_HL
- /*
- * Correct stored syntax highlighting info for changes in each displayed
- * buffer. Each buffer must only be done once.
- */
- FOR_ALL_WINDOWS(wp)
- {
- if (wp->w_buffer->b_mod_set)
- {
- # ifdef FEAT_WINDOWS
- win_T *wwp;
-
- /* Check if we already did this buffer. */
- for (wwp = firstwin; wwp != wp; wwp = wwp->w_next)
- if (wwp->w_buffer == wp->w_buffer)
- break;
- # endif
- if (
- # ifdef FEAT_WINDOWS
- wwp == wp &&
- # endif
- syntax_present(wp->w_buffer))
- syn_stack_apply_changes(wp->w_buffer);
- }
- }
- #endif
-
- /*
- * Go from top to bottom through the windows, redrawing the ones that need
- * it.
- */
- #if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
- did_one = FALSE;
- #endif
- #ifdef FEAT_SEARCH_EXTRA
- search_hl.rm.regprog = NULL;
- #endif
- FOR_ALL_WINDOWS(wp)
- {
- if (wp->w_redr_type != 0)
- {
- cursor_off();
- #if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
- if (!did_one)
- {
- did_one = TRUE;
- # ifdef FEAT_SEARCH_EXTRA
- start_search_hl();
- # endif
- # ifdef FEAT_CLIPBOARD
- /* When Visual area changed, may have to update selection. */
- if (clip_star.available && clip_isautosel())
- clip_update_selection();
- # endif
- #ifdef FEAT_GUI
- /* Remove the cursor before starting to do anything, because
- * scrolling may make it difficult to redraw the text under
- * it. */
- if (gui.in_use)
- gui_undraw_cursor();
- #endif
- }
- #endif
- win_update(wp);
- }
-
- #ifdef FEAT_WINDOWS
- /* redraw status line after the window to minimize cursor movement */
- if (wp->w_redr_status)
- {
- cursor_off();
- win_redr_status(wp);
- }
- #endif
- }
- #if defined(FEAT_SEARCH_EXTRA)
- end_search_hl();
- #endif
-
- #ifdef FEAT_WINDOWS
- /* Reset b_mod_set flags. Going through all windows is probably faster
- * than going through all buffers (there could be many buffers). */
- for (wp = firstwin; wp != NULL; wp = wp->w_next)
- wp->w_buffer->b_mod_set = FALSE;
- #else
- curbuf->b_mod_set = FALSE;
- #endif
-
- #ifdef FEAT_GUI
- updating_screen = FALSE;
- gui_may_resize_shell();
- #endif
-
- if (redraw_cmdline)
- showmode();
-
- /* May put up an introductory message when not editing a file */
- if (!did_intro && bufempty()
- && curbuf->b_fname == NULL
- #ifdef FEAT_WINDOWS
- && firstwin->w_next == NULL
- #endif
- && vim_strchr(p_shm, SHM_INTRO) == NULL)
- intro_message(FALSE);
- did_intro = TRUE;
-
- #ifdef FEAT_GUI
- /* Redraw the cursor and update the scrollbars when all screen updating is
- * done. */
- if (gui.in_use)
- {
- out_flush(); /* required before updating the cursor */
- if (did_one)
- gui_update_cursor(FALSE, FALSE);
- gui_update_scrollbars(FALSE);
- }
- #endif
- }
-
- #if defined(FEAT_SIGNS) || defined(PROTO)
- void
- update_debug_sign(buf, lnum)
- buf_T *buf;
- linenr_T lnum;
- {
- win_T *wp;
- int row;
- int j;
-
- #ifdef FEAT_FOLDING
- win_foldinfo.fi_level = 0;
- #endif
-
- #ifdef FEAT_GUI
- /* Remove the cursor before starting to do anything, because scrolling may
- * make it difficult to redraw the text under it. */
- if (gui.in_use)
- gui_undraw_cursor();
- #endif
- if (buf != NULL && lnum > 0)
- { /* update/delete a specific mark */
- FOR_ALL_WINDOWS(wp)
- {
- if (wp->w_buffer == buf && lnum >= wp->w_topline
- && lnum < wp->w_botline)
- {
- row = 0;
- for (j = 0; j < wp->w_lines_valid; ++j)
- {
- /* Ignore folding, a closed fold with a sign doesn't need
- * updating. */
- if (lnum == wp->w_lines[j].wl_lnum)
- {
- screen_start(); /* not sure of screen cursor */
- win_line(wp, lnum, row, row + wp->w_lines[j].wl_size);
- break;
- }
- row += wp->w_lines[j].wl_size;
- }
- }
- }
- }
- else
- {
- /* update all windows (signs deleted) */
- #ifdef FEAT_WINDOWS
- for (wp = firstwin; wp; wp = wp->w_next)
- win_update(wp);
- #else
- win_update(curwin);
- #endif
- }
- #ifdef FEAT_GUI
- /* Redraw the cursor and update the scrollbars when all screen updating is
- * done. */
- if (gui.in_use)
- {
- out_flush(); /* required before updating the cursor */
- gui_update_cursor(FALSE, FALSE);
- gui_update_scrollbars(FALSE);
- }
- #endif
- }
- #endif
-
-
- #ifdef FEAT_GUI
- /*
- * Update a single window, its status line and maybe the command line msg.
- * Used for the GUI scrollbar.
- */
- void
- updateWindow(wp)
- win_T *wp;
- {
- cursor_off();
- updating_screen = TRUE;
- #ifdef FEAT_GUI
- /* Remove the cursor before starting to do anything, because scrolling may
- * make it difficult to redraw the text under it. */
- if (gui.in_use)
- gui_undraw_cursor();
- #endif
- #ifdef FEAT_SEARCH_EXTRA
- start_search_hl();
- #endif
- #ifdef FEAT_CLIPBOARD
- /* When Visual area changed, may have to update selection. */
- if (clip_star.available && clip_isautosel())
- clip_update_selection();
- #endif
- win_update(wp);
- #ifdef FEAT_WINDOWS
- if (wp->w_redr_status
- # ifdef FEAT_CMDL_INFO
- || p_ru
- # endif
- # ifdef FEAT_STL_OPT
- || *p_stl
- # endif
- )
- win_redr_status(wp);
- #endif
- if (redraw_cmdline)
- showmode();
- #ifdef FEAT_SEARCH_EXTRA
- end_search_hl();
- #endif
- updating_screen = FALSE;
- gui_may_resize_shell();
-
- #ifdef FEAT_GUI
- /* Redraw the cursor and update the scrollbars when all screen updating is
- * done. */
- if (gui.in_use)
- {
- out_flush(); /* required before updating the cursor */
- gui_update_cursor(FALSE, FALSE);
- gui_update_scrollbars(FALSE);
- }
- #endif
- }
- #endif
-
- /*
- * Update a single window.
- *
- * This may cause the windows below it also to be redrawn (when clearing the
- * screen or scrolling lines).
- *
- * How the window is redrawn depends on wp->w_redr_type. Each type also
- * implies the one below it.
- * NOT_VALID redraw the whole window
- * REDRAW_TOP redraw the top w_upd_rows window lines, otherwise like VALID
- * INVERTED redraw the changed part of the Visual area
- * INVERTED_ALL redraw the whole Visual area
- * VALID 1. scroll up/down to adjust for a changed w_topline
- * 2. update lines at the top when scrolled down
- * 3. redraw changed text:
- * - if wp->w_buffer->b_mod_set set, udpate lines between
- * b_mod_top and b_mod_bot.
- * - if wp->w_redraw_top non-zero, redraw lines between
- * wp->w_redraw_top and wp->w_redr_bot.
- * - continue redrawing when syntax status is invalid.
- * 4. if scrolled up, update lines at the bottom.
- * This results in three areas that may need updating:
- * top: from first row to top_end (when scrolled down)
- * mid: from mid_start to mid_end (update inversion or changed text)
- * bot: from bot_start to last row (when scrolled up)
- */
- static void
- win_update(wp)
- win_T *wp;
- {
- buf_T *buf = wp->w_buffer;
- int type;
- int top_end = 0; /* Below last row of the top area that needs
- updating. 0 when no top area updating. */
- int mid_start = 999;/* first row of the mid area that needs
- updating. 999 when no mid area updating. */
- int mid_end = 0; /* Below last row of the mid area that needs
- updating. 0 when no mid area updating. */
- int bot_start = 999;/* first row of the bot area that needs
- updating. 999 when no bot area updating */
- #ifdef FEAT_VISUAL
- int scrolled_down = FALSE; /* TRUE when scrolled down when
- w_topline got smaller a bit */
- #endif
- #ifdef FEAT_SEARCH_EXTRA
- int top_to_mod = FALSE; /* redraw above mod_top */
- #endif
-
- int row; /* current window row to display */
- linenr_T lnum; /* current buffer lnum to display */
- int idx; /* current index in w_lines[] */
- int srow; /* starting row of the current line */
-
- int eof = FALSE; /* if TRUE, we hit the end of the file */
- int didline = FALSE; /* if TRUE, we finished the last line */
- int i;
- long j;
- static int recursive = FALSE; /* being called recursively */
- int old_botline = wp->w_botline;
- #ifdef FEAT_FOLDING
- long fold_count;
- #endif
- #ifdef FEAT_SYN_HL
- /* remember what happened to the previous line, to know if
- * check_visual_highlight() can be used */
- #define DID_NONE 1 /* didn't update a line */
- #define DID_LINE 2 /* updated a normal line */
- #define DID_FOLD 3 /* updated a folded line */
- int did_update = DID_NONE;
- linenr_T syntax_last_parsed = 0; /* last parsed text line */
- #endif
- linenr_T mod_top = 0;
- linenr_T mod_bot = 0;
- #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
- int save_got_int;
- #endif
-
- type = wp->w_redr_type;
-
- if (type == NOT_VALID)
- {
- #ifdef FEAT_WINDOWS
- wp->w_redr_status = TRUE;
- #endif
- wp->w_lines_valid = 0;
- }
-
- /* Window is zero-height: nothing to draw. */
- if (wp->w_height == 0)
- {
- wp->w_redr_type = 0;
- return;
- }
-
- #ifdef FEAT_VERTSPLIT
- /* Window is zero-width: Only need to draw the separator. */
- if (wp->w_width == 0)
- {
- /* draw the vertical separator right of this window */
- draw_vsep_win(wp, 0);
- wp->w_redr_type = 0;
- return;
- }
- #endif
-
- #ifdef FEAT_SEARCH_EXTRA
- /* Setup for ":match" highlighting. Disable any previous match */
- match_hl.rm = wp->w_match;
- if (wp->w_match_id == 0)
- match_hl.attr = 0;
- else
- match_hl.attr = syn_id2attr(wp->w_match_id);
- match_hl.buf = buf;
- match_hl.lnum = 0;
- search_hl.buf = buf;
- search_hl.lnum = 0;
- search_hl.first_lnum = 0;
- #endif
-
- if (buf->b_mod_set && buf->b_mod_xlines != 0 && wp->w_redraw_top != 0)
- {
- /*
- * When there are both inserted/deleted lines and specific lines to be
- * redrawn,, w_redraw_top and w_redraw_bot may be invalid, just redraw
- * everything (only happens when redrawing is off for while).
- */
- type = NOT_VALID;
- }
- else
- {
- /*
- * Set mod_top to the first line that needs displaying because of
- * changes. Set mod_bot to the first line after the changes.
- */
- mod_top = wp->w_redraw_top;
- if (wp->w_redraw_bot != 0)
- mod_bot = wp->w_redraw_bot + 1;
- else
- mod_bot = 0;
- wp->w_redraw_top = 0; /* reset for next time */
- wp->w_redraw_bot = 0;
- if (buf->b_mod_set)
- {
- if (mod_top == 0 || mod_top > buf->b_mod_top)
- mod_top = buf->b_mod_top;
- if (mod_bot == 0 || mod_bot < buf->b_mod_bot)
- mod_bot = buf->b_mod_bot;
-
- #ifdef FEAT_SEARCH_EXTRA
- /* When 'hlsearch' is on and using a multi-line search pattern, a
- * change in one line may make the Search highlighting in a
- * previous line invalid. Simple solution: redraw all visible
- * lines above the change.
- * Same for a ":match" pattern.
- */
- if ((search_hl.rm.regprog != NULL
- && re_multiline(search_hl.rm.regprog))
- || (match_hl.rm.regprog != NULL
- && re_multiline(match_hl.rm.regprog)))
- top_to_mod = TRUE;
- #endif
- }
- #ifdef FEAT_FOLDING
- if (mod_top != 0 && hasAnyFolding(wp))
- {
- linenr_T lnumt, lnumb;
-
- /*
- * A change in a line can cause lines above it to become folded or
- * unfolded. Find the top most buffer line that may be affected.
- * If the line was previously folded and displayed, get the first
- * line of that fold. If the line is folded now, get the first
- * folded line. Use the minimum of these two.
- */
-
- /* Find last valid w_lines[] entry above mod_top. Set lnumt to
- * the line below it. If there is no valid entry, use w_topline.
- * Find the first valid w_lines[] entry below mod_bot. Set lnumb
- * to this line. If there is no valid entry, use MAXLNUM. */
- lnumt = wp->w_topline;
- lnumb = MAXLNUM;
- for (i = 0; i < wp->w_lines_valid; ++i)
- if (wp->w_lines[i].wl_valid)
- {
- if (wp->w_lines[i].wl_lastlnum < mod_top)
- lnumt = wp->w_lines[i].wl_lastlnum + 1;
- if (lnumb == MAXLNUM && wp->w_lines[i].wl_lnum >= mod_bot)
- {
- lnumb = wp->w_lines[i].wl_lnum;
- /* When there is a fold column it might need updating
- * in the next line ("J" just above an open fold). */
- if (wp->w_p_fdc > 0)
- ++lnumb;
- }
- }
-
- (void)hasFoldingWin(wp, mod_top, &mod_top, NULL, TRUE, NULL);
- if (mod_top > lnumt)
- mod_top = lnumt;
-
- /* Now do the same for the bottom line (one above mod_bot). */
- --mod_bot;
- (void)hasFoldingWin(wp, mod_bot, NULL, &mod_bot, TRUE, NULL);
- ++mod_bot;
- if (mod_bot < lnumb)
- mod_bot = lnumb;
- }
- #endif
-
- /* When a change starts above w_topline and the end is below
- * w_topline, start redrawing at w_topline.
- * If the end of the change is above w_topline: do like no changes was
- * maded, but redraw the first line to find changes in syntax. */
- if (mod_top != 0 && mod_top < wp->w_topline)
- {
- if (mod_bot > wp->w_topline)
- mod_top = wp->w_topline;
- #ifdef FEAT_SYN_HL
- else if (syntax_present(buf))
- top_end = 1;
- #endif
- }
- }
-
- /*
- * When only displaying the lines at the top, set top_end. Used when
- * window has scrolled down for msg_scrolled.
- */
- if (type == REDRAW_TOP)
- {
- j = 0;
- for (i = 0; i < wp->w_lines_valid; ++i)
- {
- j += wp->w_lines[i].wl_size;
- if (j >= wp->w_upd_rows)
- {
- top_end = j;
- break;
- }
- }
- if (top_end == 0)
- /* not found (cannot happen?): redraw everything */
- type = NOT_VALID;
- else
- /* top area defined, the rest is VALID */
- type = VALID;
- }
-
- /*
- * If there are no changes on the screen that require a complete redraw,
- * handle three cases:
- * 1: we are off the top of the screen by a few lines: scroll down
- * 2: wp->w_topline is below wp->w_lines[0].wl_lnum: may scroll up
- * 3: wp->w_topline is wp->w_lines[0].wl_lnum: find first entry in
- * w_lines[] that needs updating.
- */
- if ((type == VALID || type == INVERTED || type == INVERTED_ALL)
- #ifdef FEAT_DIFF
- && !wp->w_botfill && !wp->w_old_botfill
- #endif
- )
- {
- if (buf->b_mod_set && wp->w_topline == mod_top)
- {
- /*
- * w_topline is the first changed line, the scrolling will be done
- * further down.
- */
- }
- else if (wp->w_lines[0].wl_valid
- && (wp->w_topline < wp->w_lines[0].wl_lnum
- #ifdef FEAT_DIFF
- || (wp->w_topline == wp->w_lines[0].wl_lnum
- && wp->w_topfill > wp->w_old_topfill)
- #endif
- ))
- {
- /*
- * New topline is above old topline: May scroll down.
- */
- #ifdef FEAT_FOLDING
- if (hasAnyFolding(wp))
- {
- linenr_T ln;
-
- /* count the number of lines we are off, counting a sequence
- * of folded lines as one */
- j = 0;
- for (ln = wp->w_topline; ln < wp->w_lines[0].wl_lnum; ++ln)
- {
- ++j;
- if (j >= wp->w_height - 2)
- break;
- (void)hasFoldingWin(wp, ln, NULL, &ln, TRUE, NULL);
- }
- }
- else
- #endif
- j = wp->w_lines[0].wl_lnum - wp->w_topline;
- if (j < wp->w_height - 2) /* not too far off */
- {
- i = plines_m_win(wp, wp->w_topline, wp->w_lines[0].wl_lnum - 1);
- #ifdef FEAT_DIFF
- /* insert extra lines for previously invisible filler lines */
- if (wp->w_lines[0].wl_lnum != wp->w_topline)
- i += diff_check_fill(wp, wp->w_lines[0].wl_lnum)
- - wp->w_old_topfill;
- #endif
- if (i < wp->w_height - 2) /* less than a screen off */
- {
- /*
- * Try to insert the correct number of lines.
- * If not the last window, delete the lines at the bottom.
- * win_ins_lines may fail when the terminal can't do it.
- */
- if (i > 0)
- check_for_delay(FALSE);
- if (win_ins_lines(wp, 0, i, FALSE, wp == firstwin) == OK)
- {
- if (wp->w_lines_valid != 0)
- {
- /* Need to update rows that are new, stop at the
- * first one that scrolled down. */
- top_end = i;
- #ifdef FEAT_VISUAL
- scrolled_down = TRUE;
- #endif
-
- /* Move the entries that were scrolled, disable
- * the entries for the lines to be redrawn. */
- if ((wp->w_lines_valid += j) > wp->w_height)
- wp->w_lines_valid = wp->w_height;
- for (idx = wp->w_lines_valid; idx - j >= 0; idx--)
- wp->w_lines[idx] = wp->w_lines[idx - j];
- while (idx >= 0)
- wp->w_lines[idx--].wl_valid = FALSE;
- }
- }
- else
- mid_start = 0; /* redraw all lines */
- }
- else
- mid_start = 0; /* redraw all lines */
- }
- else
- mid_start = 0; /* redraw all lines */
- }
- else
- {
- /*
- * New topline is at or below old topline: May scroll up.
- * When topline didn't change, find first entry in w_lines[] that
- * needs updating.
- */
-
- /* try to find wp->w_topline in wp->w_lines[].wl_lnum */
- j = -1;
- row = 0;
- for (i = 0; i < wp->w_lines_valid; i++)
- {
- if (wp->w_lines[i].wl_valid
- && wp->w_lines[i].wl_lnum == wp->w_topline)
- {
- j = i;
- break;
- }
- row += wp->w_lines[i].wl_size;
- }
- if (j == -1)
- {
- /* if wp->w_topline is not in wp->w_lines[].wl_lnum redraw all
- * lines */
- mid_start = 0;
- }
- else
- {
- /*
- * Try to delete the correct number of lines.
- * wp->w_topline is at wp->w_lines[i].wl_lnum.
- */
- #ifdef FEAT_DIFF
- /* If the topline didn't change, delete old filler lines,
- * otherwise delete filler lines of the new topline... */
- if (wp->w_lines[0].wl_lnum == wp->w_topline)
- row += wp->w_old_topfill;
- else
- row += diff_check_fill(wp, wp->w_topline);
- /* ... but don't delete new filler lines. */
- row -= wp->w_topfill;
- #endif
- if (row > 0)
- {
- check_for_delay(FALSE);
- if (win_del_lines(wp, 0, row, FALSE, wp == firstwin) == OK)
- bot_start = wp->w_height - row;
- else
- mid_start = 0; /* redraw all lines */
- }
- if ((row == 0 || bot_start < 999) && wp->w_lines_valid != 0)
- {
- /*
- * Skip the lines (below the deleted lines) that are still
- * valid and don't need redrawing. Copy their info
- * upwards, to compensate for the deleted lines. Set
- * bot_start to the first row that needs redrawing.
- */
- bot_start = 0;
- idx = 0;
- for (;;)
- {
- wp->w_lines[idx] = wp->w_lines[j];
- /* stop at line that didn't fit */
- if (bot_start + row + (int)wp->w_lines[j].wl_size
- > wp->w_height)
- {
- wp->w_lines_valid = idx + 1;
- break;
- }
- bot_start += wp->w_lines[idx++].wl_size;
-
- /* stop at the last valid entry in w_lines[].wl_size */
- if (++j >= wp->w_lines_valid)
- {
- wp->w_lines_valid = idx;
- break;
- }
- }
- #ifdef FEAT_DIFF
- /* Correct the first entry for filler lines at the top
- * when it won't get updated below. */
- if (wp->w_p_diff && bot_start > 0)
- wp->w_lines[0].wl_size =
- plines_win_nofill(wp, wp->w_topline, TRUE)
- + wp->w_topfill;
- #endif
- }
- }
- }
-
- /* When starting redraw in the first line, redraw all lines. When
- * there is only one window it's probably faster to clear the screen
- * first. */
- if (mid_start == 0)
- {
- mid_end = wp->w_height;
- if (lastwin == firstwin)
- screenclear();
- }
- }
- else
- {
- /* Not VALID or INVERTED: redraw all lines. */
- mid_start = 0;
- mid_end = wp->w_height;
- }
-
- #ifdef FEAT_VISUAL
- /* check if we are updating or removing the inverted part */
- if ((VIsual_active && buf == curwin->w_buffer)
- || (wp->w_old_cursor_lnum != 0 && type != NOT_VALID))
- {
- linenr_T from, to;
-
- if (VIsual_active)
- {
- if (VIsual_active
- && (VIsual_mode != wp->w_old_visual_mode
- || type == INVERTED_ALL))
- {
- /*
- * If the type of Visual selection changed, redraw the whole
- * selection. Also when the ownership of the X selection is
- * gained or lost.
- */
- if (curwin->w_cursor.lnum < VIsual.lnum)
- {
- from = curwin->w_cursor.lnum;
- to = VIsual.lnum;
- }
- else
- {
- from = VIsual.lnum;
- to = curwin->w_cursor.lnum;
- }
- /* redraw more when the cursor moved as well */
- if (wp->w_old_cursor_lnum < from)
- from = wp->w_old_cursor_lnum;
- if (wp->w_old_cursor_lnum > to)
- to = wp->w_old_cursor_lnum;
- }
- else
- {
- /*
- * Find the line numbers that need to be updated: The lines
- * between the old cursor position and the current cursor
- * position. Also check if the Visual position changed.
- */
- if (curwin->w_cursor.lnum < wp->w_old_cursor_lnum)
- {
- from = curwin->w_cursor.lnum;
- to = wp->w_old_cursor_lnum;
- }
- else
- {
- from = wp->w_old_cursor_lnum;
- to = curwin->w_cursor.lnum;
- if (from == 0) /* Visual mode just started */
- from = to;
- }
-
- if (VIsual.lnum != wp->w_old_visual_lnum)
- {
- if (wp->w_old_visual_lnum < from
- && wp->w_old_visual_lnum != 0)
- from = wp->w_old_visual_lnum;
- if (wp->w_old_visual_lnum > to)
- to = wp->w_old_visual_lnum;
- if (VIsual.lnum < from)
- from = VIsual.lnum;
- if (VIsual.lnum > to)
- to = VIsual.lnum;
- }
- }
-
- /*
- * If in block mode and changed column or curwin->w_curswant:
- * update all lines.
- * First compute the actual start and end column.
- */
- if (VIsual_mode == Ctrl_V)
- {
- colnr_T fromc, toc;
-
- getvcols(wp, &VIsual, &curwin->w_cursor, &fromc, &toc);
- ++toc;
- if (curwin->w_curswant == MAXCOL)
- toc = MAXCOL;
-
- if (fromc != wp->w_old_cursor_fcol
- || toc != wp->w_old_cursor_lcol)
- {
- if (from > VIsual.lnum)
- from = VIsual.lnum;
- if (to < VIsual.lnum)
- to = VIsual.lnum;
- }
- wp->w_old_cursor_fcol = fromc;
- wp->w_old_cursor_lcol = toc;
- }
- }
- else
- {
- /* Use the line numbers of the old Visual area. */
- if (wp->w_old_cursor_lnum < wp->w_old_visual_lnum)
- {
- from = wp->w_old_cursor_lnum;
- to = wp->w_old_visual_lnum;
- }
- else
- {
- from = wp->w_old_visual_lnum;
- to = wp->w_old_cursor_lnum;
- }
- }
-
- /*
- * There is no need to update lines above the top of the window.
- */
- if (from < wp->w_topline)
- from = wp->w_topline;
-
- /*
- * If we know the value of w_botline, use it to restrict the update to
- * the lines that are visible in the window.
- */
- if (wp->w_valid & VALID_BOTLINE)
- {
- if (from >= wp->w_botline)
- from = wp->w_botline - 1;
- if (to >= wp->w_botline)
- to = wp->w_botline - 1;
- }
-
- /*
- * Find the minimal part to be updated.
- * Watch out for scrolling that made entries in w_lines[] invalid.
- * E.g., CTRL-U makes the first half of w_lines[] invalid and sets
- * top_end; need to redraw from top_end to the "to" line.
- * A middle mouse click with a Visual selection may change the text
- * above the Visual area and reset wl_valid, do count these for
- * mid_end (in srow).
- */
- if (mid_start > 0)
- {
- lnum = wp->w_topline;
- idx = 0;
- srow = 0;
- if (scrolled_down)
- mid_start = top_end;
- else
- mid_start = 0;
- while (lnum < from && idx < wp->w_lines_valid) /* find start */
- {
- if (wp->w_lines[idx].wl_valid)
- mid_start += wp->w_lines[idx].wl_size;
- else if (!scrolled_down)
- srow += wp->w_lines[idx].wl_size;
- ++idx;
- # ifdef FEAT_FOLDING
- if (idx < wp->w_lines_valid && wp->w_lines[idx].wl_valid)
- lnum = wp->w_lines[idx].wl_lnum;
- else
- # endif
- ++lnum;
- }
- srow += mid_start;
- mid_end = wp->w_height;
- for ( ; idx < wp->w_lines_valid; ++idx) /* find end */
- {
- if (wp->w_lines[idx].wl_valid
- && wp->w_lines[idx].wl_lnum >= to + 1)
- {
- /* Only update until first row of this line */
- mid_end = srow;
- break;
- }
- srow += wp->w_lines[idx].wl_size;
- }
- }
- }
-
- if (VIsual_active && buf == curwin->w_buffer)
- {
- wp->w_old_visual_mode = VIsual_mode;
- wp->w_old_cursor_lnum = curwin->w_cursor.lnum;
- wp->w_old_visual_lnum = VIsual.lnum;
- wp->w_old_curswant = curwin->w_curswant;
- }
- else
- {
- wp->w_old_visual_mode = 0;
- wp->w_old_cursor_lnum = 0;
- wp->w_old_visual_lnum = 0;
- }
- #endif /* FEAT_VISUAL */
-
- #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
- /* reset got_int, otherwise regexp won't work */
- save_got_int = got_int;
- got_int = 0;
- #endif
- #ifdef FEAT_FOLDING
- win_foldinfo.fi_level = 0;
- #endif
-
- /*
- * Update all the window rows.
- */
- idx = 0; /* first entry in w_lines[].wl_size */
- row = 0;
- srow = 0;
- lnum = wp->w_topline; /* first line shown in window */
- for (;;)
- {
- /* stop updating when reached the end of the window (check for _past_
- * the end of the window is at the end of the loop) */
- if (row == wp->w_height)
- {
- didline = TRUE;
- break;
- }
-
- /* stop updating when hit the end of the file */
- if (lnum > buf->b_ml.ml_line_count)
- {
- eof = TRUE;
- break;
- }
-
- /* Remember the starting row of the line that is going to be dealt
- * with. It is used further down when the line doesn't fit. */
- srow = row;
-
- /*
- * Update a line when it is in an area that needs updating, when it
- * has changes or w_lines[idx] is invalid.
- * bot_start may be halfway a wrapped line after using
- * win_del_lines(), check if the current line includes it.
- * When syntax folding is being used, the saved syntax states will
- * already have been updated, we can't see where the syntax state is
- * the same again, just update until the end of the window.
- */
- if (row < top_end
- || (row >= mid_start && row < mid_end)
- #ifdef FEAT_SEARCH_EXTRA
- || top_to_mod
- #endif
- || idx >= wp->w_lines_valid
- || (row + wp->w_lines[idx].wl_size > bot_start)
- || (mod_top != 0
- && (lnum == mod_top
- || (lnum >= mod_top
- && (lnum < mod_bot
- #ifdef FEAT_SYN_HL
- || did_update == DID_FOLD
- || (did_update == DID_LINE
- && syntax_present(buf)
- && (
- # ifdef FEAT_FOLDING
- (foldmethodIsSyntax(wp)
- && hasAnyFolding(wp)) ||
- # endif
- syntax_check_changed(lnum)))
- #endif
- )))))
- {
- #ifdef FEAT_SEARCH_EXTRA
- if (lnum == mod_top)
- top_to_mod = FALSE;
- #endif
-
- /*
- * When at start of changed lines: May scroll following lines
- * up or down to minimize redrawing.
- * Don't do this when the change continues until the end.
- * Don't scroll when dollar_vcol is non-zero, keep the "$".
- */
- if (lnum == mod_top
- && mod_bot != MAXLNUM
- && !(dollar_vcol != 0 && mod_bot == mod_top + 1))
- {
- int old_rows = 0;
- int new_rows = 0;
- int xtra_rows;
- linenr_T l;
-
- /* Count the old number of window rows, using w_lines[], which
- * should still contain the sizes for the lines as they are
- * currently displayed. */
- for (i = idx; i < wp->w_lines_valid; ++i)
- {
- /* Only valid lines have a meaningful wl_lnum. Invalid
- * lines are part of the changed area. */
- if (wp->w_lines[i].wl_valid
- && wp->w_lines[i].wl_lnum == mod_bot)
- break;
- old_rows += wp->w_lines[i].wl_size;
- #ifdef FEAT_FOLDING
- if (wp->w_lines[i].wl_valid
- && wp->w_lines[i].wl_lastlnum + 1 == mod_bot)
- {
- /* Must have found the last valid entry above mod_bot.
- * Add following invalid entries. */
- ++i;
- while (i < wp->w_lines_valid
- && !wp->w_lines[i].wl_valid)
- old_rows += wp->w_lines[i++].wl_size;
- break;
- }
- #endif
- }
-
- if (i >= wp->w_lines_valid)
- {
- /* When buffer lines have been inserted/deleted, and
- * insering/deleting window lines is not possible, need to
- * check for redraw until the end of the window. This is
- * also required when w_topline changed. */
- if (buf->b_mod_xlines != 0
- || (wp->w_topline == mod_top
- && wp->w_lines_valid > 0
- && wp->w_lines[0].wl_lnum != mod_top))
- bot_start = 0;
- }
- else
- {
- /* Able to count old number of rows: Count new window
- * rows, and may insert/delete lines */
- j = idx;
- for (l = lnum; l < mod_bot; ++l)
- {
- #ifdef FEAT_FOLDING
- if (hasFoldingWin(wp, l, NULL, &l, TRUE, NULL))
- ++new_rows;
- else
- #endif
- #ifdef FEAT_DIFF
- if (l == wp->w_topline)
- new_rows += plines_win_nofill(wp, l, TRUE)
- + wp->w_topfill;
- else
- #endif
- new_rows += plines_win(wp, l, TRUE);
- ++j;
- if (new_rows > wp->w_height - row - 2)
- {
- /* it's getting too much, must redraw the rest */
- new_rows = 9999;
- break;
- }
- }
- xtra_rows = new_rows - old_rows;
- if (xtra_rows < 0)
- {
- /* May scroll text up. If there is not enough
- * remaining text or scrolling fails, must redraw the
- * rest. If scrolling works, must redraw the text
- * below the scrolled text. */
- if (row - xtra_rows >= wp->w_height - 2)
- mod_bot = MAXLNUM;
- else
- {
- check_for_delay(FALSE);
- if (win_del_lines(wp, row,
- -xtra_rows, FALSE, FALSE) == FAIL)
- mod_bot = MAXLNUM;
- else
- bot_start = wp->w_height + xtra_rows;
- }
- }
- else if (xtra_rows > 0)
- {
- /* May scroll text down. If there is not enough
- * remaining text of scrolling fails, must redraw the
- * rest. */
- if (row + xtra_rows >= wp->w_height - 2)
- mod_bot = MAXLNUM;
- else
- {
- check_for_delay(FALSE);
- if (win_ins_lines(wp, row + old_rows,
- xtra_rows, FALSE, FALSE) == FAIL)
- mod_bot = MAXLNUM;
- else if (top_end > row + old_rows)
- /* Scrolled the part at the top that requires
- * updating down. */
- top_end += xtra_rows;
- }
- }
-
- /* When not updating the rest, may need to move w_lines[]
- * entries. */
- if (mod_bot != MAXLNUM && i != j)
- {
- if (j < i)
- {
- int x = row + new_rows;
-
- /* move entries in w_lines[] upwards */
- for (;;)
- {
- /* stop at last valid entry in w_lines[] */
- if (i >= wp->w_lines_valid)
- {
- wp->w_lines_valid = j;
- break;
- }
- wp->w_lines[j] = wp->w_lines[i];
- /* stop at a line that won't fit */
- if (x + (int)wp->w_lines[j].wl_size
- > wp->w_height)
- {
- wp->w_lines_valid = j + 1;
- break;
- }
- x += wp->w_lines[j++].wl_size;
- ++i;
- }
- if (bot_start > x)
- bot_start = x;
- }
- else /* j > i */
- {
- /* move entries in w_lines[] downwards */
- j -= i;
- wp->w_lines_valid += j;
- if (wp->w_lines_valid > wp->w_height)
- wp->w_lines_valid = wp->w_height;
- for (i = wp->w_lines_valid; i - j >= idx; --i)
- wp->w_lines[i] = wp->w_lines[i - j];
- }
- }
- }
-
- /* When inserting or deleting lines and 'number' is set:
- * Redraw all lines below the change to update the line
- * numbers. */
- if (buf->b_mod_xlines != 0 && wp->w_p_nu)
- bot_start = 0;
- }
-
- #ifdef FEAT_FOLDING
- /*
- * When lines are folded, display one line for all of them.
- * Otherwise, display normally (can be several display lines when
- * 'wrap' is on).
- */
- fold_count = foldedCount(wp, lnum, &win_foldinfo);
- if (fold_count != 0)
- {
- fold_line(wp, fold_count, &win_foldinfo, lnum, row);
- ++row;
- --fold_count;
- wp->w_lines[idx].wl_folded = TRUE;
- wp->w_lines[idx].wl_lastlnum = lnum + fold_count;
- #ifdef FEAT_SYN_HL
- did_update = DID_FOLD;
- #endif
- }
- else
- #endif
- {
- #ifdef FEAT_SEARCH_EXTRA
- prepare_search_hl(wp, lnum);
- #endif
- #ifdef FEAT_SYN_HL
- /* Let the syntax stuff know we skipped a few lines. */
- if (syntax_last_parsed != 0 && syntax_last_parsed + 1 < lnum
- && syntax_present(buf))
- syntax_end_parsing(syntax_last_parsed + 1);
- #endif
-
- /*
- * Display one line.
- */
- row = win_line(wp, lnum, srow, wp->w_height);
-
- #ifdef FEAT_FOLDING
- wp->w_lines[idx].wl_folded = FALSE;
- wp->w_lines[idx].wl_lastlnum = lnum;
- #endif
- #ifdef FEAT_SYN_HL
- did_update = DID_LINE;
- syntax_last_parsed = lnum;
- #endif
- }
-
- wp->w_lines[idx].wl_lnum = lnum;
- wp->w_lines[idx].wl_valid = TRUE;
- if (row > wp->w_height) /* past end of screen */
- {
- /* we may need the size of that too long line later on */
- if (dollar_vcol == 0)
- wp->w_lines[idx].wl_size = plines_win(wp, lnum, TRUE);
- ++idx;
- break;
- }
- if (dollar_vcol == 0)
- wp->w_lines[idx].wl_size = row - srow;
- ++idx;
- #ifdef FEAT_FOLDING
- lnum += fold_count + 1;
- #else
- ++lnum;
- #endif
- }
- else
- {
- /* This line does not need updating, advance to the next one */
- row += wp->w_lines[idx++].wl_size;
- if (row > wp->w_height) /* past end of screen */
- break;
- #ifdef FEAT_FOLDING
- lnum = wp->w_lines[idx - 1].wl_lastlnum + 1;
- #else
- ++lnum;
- #endif
- #ifdef FEAT_SYN_HL
- did_update = DID_NONE;
- #endif
- }
-
- if (lnum > buf->b_ml.ml_line_count)
- {
- eof = TRUE;
- break;
- }
- }
- /*
- * End of loop over all window lines.
- */
-
-
- if (idx > wp->w_lines_valid)
- wp->w_lines_valid = idx;
-
- #ifdef FEAT_SYN_HL
- /*
- * Let the syntax stuff know we stop parsing here.
- */
- if (syntax_last_parsed != 0 && syntax_present(buf))
- syntax_end_parsing(syntax_last_parsed + 1);
- #endif
-
- /*
- * If we didn't hit the end of the file, and we didn't finish the last
- * line we were working on, then the line didn't fit.
- */
- wp->w_empty_rows = 0;
- #ifdef FEAT_DIFF
- wp->w_filler_rows = 0;
- #endif
- if (!eof && !didline)
- {
- if (lnum == wp->w_topline)
- {
- /*
- * Single line that does not fit!
- * Don't overwrite it, it can be edited.
- */
- wp->w_botline = lnum + 1;
- }
- #ifdef FEAT_DIFF
- else if (diff_check_fill(wp, lnum) >= wp->w_height - srow)
- {
- /* Window ends in filler lines. */
- wp->w_botline = lnum;
- wp->w_filler_rows = wp->w_height - srow;
- }
- #endif
- else if (dy_flags & DY_LASTLINE) /* 'display' has "lastline" */
- {
- /*
- * Last line isn't finished: Display "@@@" at the end.
- */
- screen_fill(W_WINROW(wp) + wp->w_height - 1,
- W_WINROW(wp) + wp->w_height,
- (int)W_ENDCOL(wp) - 3, (int)W_ENDCOL(wp),
- '@', '@', hl_attr(HLF_AT));
- set_empty_rows(wp, srow);
- wp->w_botline = lnum;
- }
- else
- {
- win_draw_end(wp, '@', ' ', srow, wp->w_height, HLF_AT);
- wp->w_botline = lnum;
- }
- }
- else
- {
- #ifdef FEAT_VERTSPLIT
- draw_vsep_win(wp, row);
- #endif
- if (eof) /* we hit the end of the file */
- {
- wp->w_botline = buf->b_ml.ml_line_count + 1;
- #ifdef FEAT_DIFF
- j = diff_check_fill(wp, wp->w_botline);
- if (j > 0 && !wp->w_botfill)
- {
- /*
- * Display filler lines at the end of the file
- */
- if (char2cells(fill_diff) > 1)
- i = '-';
- else
- i = fill_diff;
- if (row + j > wp->w_height)
- j = wp->w_height - row;
- win_draw_end(wp, i, i, row, row + (int)j, HLF_DED);
- row += j;
- }
- #endif
- }
- else if (dollar_vcol == 0)
- wp->w_botline = lnum;
-
- /* make sure the rest of the screen is blank */
- /* put '~'s on rows that aren't part of the file. */
- win_draw_end(wp, '~', ' ', row, wp->w_height, HLF_AT);
- }
-
- /* Reset the type of redrawing required, the window has been updated. */
- wp->w_redr_type = 0;
- #ifdef FEAT_DIFF
- wp->w_old_topfill = wp->w_topfill;
- wp->w_old_botfill = wp->w_botfill;
- #endif
-
- if (dollar_vcol == 0)
- {
- /*
- * There is a trick with w_botline. If we invalidate it on each
- * change that might modify it, this will cause a lot of expensive
- * calls to plines() in update_topline() each time. Therefore the
- * value of w_botline is often approximated, and this value is used to
- * compute the value of w_topline. If the value of w_botline was
- * wrong, check that the value of w_topline is correct (cursor is on
- * the visible part of the text). If it's not, we need to redraw
- * again. Mostly this just means scrolling up a few lines, so it
- * doesn't look too bad. Only do this for the current window (where
- * changes are relevant).
- */
- wp->w_valid |= VALID_BOTLINE;
- if (wp == curwin && wp->w_botline != old_botline && !recursive)
- {
- recursive = TRUE;
- curwin->w_valid &= ~VALID_TOPLINE;
- update_topline(); /* may invalidate w_botline again */
- if (must_redraw != 0)
- {
- /* Don't update for changes in buffer again. */
- i = curbuf->b_mod_set;
- curbuf->b_mod_set = FALSE;
- win_update(curwin);
- must_redraw = 0;
- curbuf->b_mod_set = i;
- }
- recursive = FALSE;
- }
- }
-
- #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
- /* restore got_int, unless CTRL-C was hit while redrawing */
- if (!got_int)
- got_int = save_got_int;
- #endif
- }
-
- /*
- * Clear the rest of the window and mark the unused lines with "c1". use "c2"
- * as the filler character.
- */
- static void
- win_draw_end(wp, c1, c2, row, endrow, hl)
- win_T *wp;
- int c1;
- int c2;
- int row;
- int endrow;
- enum hlf_value hl;
- {
- #if defined(FEAT_FOLDING) || defined(FEAT_CMDWIN)
- int n = 0;
- # define FDC_OFF n
- #else
- # define FDC_OFF 0
- #endif
-
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- {
- /* No check for cmdline window: should never be right-left. */
- # ifdef FEAT_FOLDING
- n = wp->w_p_fdc;
-
- if (n > 0)
- {
- /* draw the fold column at the right */
- if (n > wp->w_width)
- n = wp->w_width;
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
- W_ENDCOL(wp) - n, (int)W_ENDCOL(wp),
- ' ', ' ', hl_attr(HLF_FC));
- }
- # endif
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
- W_WINCOL(wp), W_ENDCOL(wp) - 1 - FDC_OFF,
- c2, c2, hl_attr(hl));
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
- W_ENDCOL(wp) - 1 - FDC_OFF, W_ENDCOL(wp) - FDC_OFF,
- c1, c2, hl_attr(hl));
- }
- else
- #endif
- {
- #ifdef FEAT_CMDWIN
- if (cmdwin_type != 0 && wp == curwin)
- {
- /* draw the cmdline character in the leftmost column */
- n = 1;
- if (n > wp->w_width)
- n = wp->w_width;
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
- W_WINCOL(wp), (int)W_WINCOL(wp) + n,
- cmdwin_type, ' ', hl_attr(HLF_AT));
- }
- #endif
- #ifdef FEAT_FOLDING
- if (wp->w_p_fdc > 0)
- {
- int nn = n + wp->w_p_fdc;
-
- /* draw the fold column at the left */
- if (nn > W_WIDTH(wp))
- nn = W_WIDTH(wp);
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
- W_WINCOL(wp) + n, (int)W_WINCOL(wp) + nn,
- ' ', ' ', hl_attr(HLF_FC));
- n = nn;
- }
- #endif
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
- W_WINCOL(wp) + FDC_OFF, (int)W_ENDCOL(wp),
- c1, c2, hl_attr(hl));
- }
- set_empty_rows(wp, row);
- }
-
- #ifdef FEAT_FOLDING
- /*
- * Display one folded line.
- */
- static void
- fold_line(wp, fold_count, foldinfo, lnum, row)
- win_T *wp;
- long fold_count;
- foldinfo_T *foldinfo;
- linenr_T lnum;
- int row;
- {
- char_u buf[51];
- pos_T *top, *bot;
- linenr_T lnume = lnum + fold_count - 1;
- int len;
- char_u *p;
- char_u *text = NULL;
- int fdc;
- int level;
- int col;
- int txtcol;
- int off = (int)(current_ScreenLine - ScreenLines);
-
- /* Build the fold line:
- * 1. Add the cmdwin_type for the command-line window
- * 2. Add the 'foldcolumn'
- * 3. Add the 'number' column
- * 4. Compose the text
- * 5. Add the text
- * 6. set highlighting for the Visual area an other text
- */
- col = 0;
-
- /*
- * 1. Add the cmdwin_type for the command-line window
- * Ignores 'rightleft', this window is never right-left.
- */
- #ifdef FEAT_CMDWIN
- if (cmdwin_type != 0 && wp == curwin)
- {
- ScreenLines[off] = cmdwin_type;
- ScreenAttrs[off] = hl_attr(HLF_AT);
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- ScreenLinesUC[off] = 0;
- #endif
- ++col;
- }
- #endif
-
- /*
- * 2. Add the 'foldcolumn'
- */
- fdc = wp->w_p_fdc;
- if (fdc > W_WIDTH(wp) - col)
- fdc = W_WIDTH(wp) - col;
- if (fdc > 0)
- {
- fill_foldcolumn(buf, wp, TRUE, lnum);
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- {
- int i;
-
- copy_text_attr(off + W_WIDTH(wp) - fdc - col, buf, fdc,
- hl_attr(HLF_FC));
- /* reverse the fold column */
- for (i = 0; i < fdc; ++i)
- ScreenLines[off + W_WIDTH(wp) - i - 1 - col] = buf[i];
- }
- else
- #endif
- copy_text_attr(off + col, buf, fdc, hl_attr(HLF_FC));
- col += fdc;
- }
-
- #ifdef FEAT_RIGHTLEFT
- # define RL_MEMSET(p, v, l) vim_memset(ScreenAttrs + off + (wp->w_p_rl ? (W_WIDTH(wp) - (p) - (l)) : (p)), v, l)
- #else
- # define RL_MEMSET(p, v, l) vim_memset(ScreenAttrs + off + p, v, l)
- #endif
-
- /* Set all attributes of the 'number' column and the text */
- RL_MEMSET(col, hl_attr(HLF_FL), (size_t)(W_WIDTH(wp) - col));
-
- /*
- * 3. Add the 'number' column
- */
- if (wp->w_p_nu)
- {
- len = W_WIDTH(wp) - col;
- if (len > 0)
- {
- if (len > 8)
- len = 8;
- sprintf((char *)buf, "%7ld ", (long)lnum);
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- /* the line number isn't reversed */
- copy_text_attr(off + W_WIDTH(wp) - len - col, buf, len,
- hl_attr(HLF_FL));
- else
- #endif
- copy_text_attr(off + col, buf, len, hl_attr(HLF_FL));
- col += len;
- }
- }
-
- /*
- * 4. Compose the folded-line string with 'foldtext', if set.
- */
- #ifdef FEAT_EVAL
- if (*wp->w_p_fdt != NUL)
- {
- char_u dashes[51];
- win_T *save_curwin;
-
- /* Set "v:foldstart" and "v:foldend". */
- set_vim_var_nr(VV_FOLDSTART, lnum);
- set_vim_var_nr(VV_FOLDEND, lnume);
-
- /* Set "v:folddashes" to a string of "level" dashes. */
- /* Set "v:foldlevel" to "level". */
- level = foldinfo->fi_level;
- if (level > 50)
- level = 50;
- vim_memset(dashes, '-', (size_t)level);
- dashes[level] = NUL;
- set_vim_var_string(VV_FOLDDASHES, dashes, -1);
- set_vim_var_nr(VV_FOLDLEVEL, (long)level);
- save_curwin = curwin;
- curwin = wp;
- curbuf = wp->w_buffer;
-
- ++emsg_off;
- text = eval_to_string_safe(wp->w_p_fdt, NULL);
- --emsg_off;
-
- curwin = save_curwin;
- curbuf = curwin->w_buffer;
- set_vim_var_string(VV_FOLDDASHES, NULL, -1);
-
- if (text != NULL)
- {
- /* Replace unprintable characters, if there are any. But
- * replace a TAB with a space. */
- for (p = text; *p != NUL; ++p)
- {
- #ifdef FEAT_MBYTE
- if (has_mbyte && (len = (*mb_ptr2len_check)(p)) > 1)
- p += len - 1;
- else
- #endif
- if (*p == TAB)
- *p = ' ';
- else if (ptr2cells(p) > 1)
- break;
- }
- if (*p != NUL)
- {
- p = transstr(text);
- vim_free(text);
- text = p;
- }
- }
- }
- if (text == NULL)
- #endif
- {
- sprintf((char *)buf, _("+--%3ld lines folded "), fold_count);
- text = buf;
- }
-
- txtcol = col; /* remember where text starts */
-
- /*
- * 5. move the text to current_ScreenLine. Fill up with "fill_fold".
- * Right-left text is put in columns 0 - number-col, normal text is put
- * in columns number-col - window-width.
- */
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- {
- int cells;
- int u8c, u8c_c1, u8c_c2;
- int idx;
-
- # ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- idx = off;
- else
- # endif
- idx = off + col;
-
- /* Store multibyte characters in ScreenLines[] et al. correctly. */
- for (p = text; *p != NUL; )
- {
- cells = (*mb_ptr2cells)(p);
- if (col + cells > W_WIDTH(wp)
- # ifdef FEAT_RIGHTLEFT
- - (wp->w_p_rl ? col : 0)
- # endif
- )
- break;
- ScreenLines[idx] = *p;
- if (enc_utf8)
- {
- u8c = utfc_ptr2char(p, &u8c_c1, &u8c_c2);
- if (*p < 0x80 && u8c_c1 == 0 && u8c_c2 == 0)
- ScreenLinesUC[idx] = 0;
- else
- {
- ScreenLinesUC[idx] = u8c;
- ScreenLinesC1[idx] = u8c_c1;
- ScreenLinesC2[idx] = u8c_c2;
- }
- if (cells > 1)
- ScreenLines[idx + 1] = 0;
- }
- else if (cells > 1) /* double-byte character */
- {
- if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
- ScreenLines2[idx] = p[1];
- else
- ScreenLines[idx + 1] = p[1];
- }
- col += cells;
- idx += cells;
- p += (*mb_ptr2len_check)(p);
- }
- }
- else
- #endif
- {
- len = (int)STRLEN(text);
- if (len > W_WIDTH(wp) - col)
- len = W_WIDTH(wp) - col;
- if (len > 0)
- {
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- STRNCPY(current_ScreenLine, text, len);
- else
- #endif
- STRNCPY(current_ScreenLine + col, text, len);
- col += len;
- }
- }
-
- /* Fill the rest of the line with the fold filler */
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- col -= txtcol;
- #endif
- while (col < W_WIDTH(wp)
- #ifdef FEAT_RIGHTLEFT
- - (wp->w_p_rl ? txtcol : 0)
- #endif
- )
- {
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- ScreenLinesUC[off + col] = 0;
- #endif
- ScreenLines[off + col++] = fill_fold;
- }
-
- if (text != buf)
- vim_free(text);
-
- /*
- * 6. set highlighting for the Visual area an other text.
- * If all folded lines are in the Visual area, highlight the line.
- */
- #ifdef FEAT_VISUAL
- if (VIsual_active && wp->w_buffer == curwin->w_buffer)
- {
- if (ltoreq(curwin->w_cursor, VIsual))
- {
- /* Visual is after curwin->w_cursor */
- top = &curwin->w_cursor;
- bot = &VIsual;
- }
- else
- {
- /* Visual is before curwin->w_cursor */
- top = &VIsual;
- bot = &curwin->w_cursor;
- }
- if (lnum >= top->lnum
- && lnume <= bot->lnum
- && (VIsual_mode != 'v'
- || ((lnum > top->lnum
- || (lnum == top->lnum
- && top->col == 0))
- && (lnume < bot->lnum
- || (lnume == bot->lnum
- && (bot->col - (*p_sel == 'e'))
- >= STRLEN(ml_get_buf(wp->w_buffer, lnume, FALSE)))))))
- {
- if (VIsual_mode == Ctrl_V)
- {
- /* Visual block mode: highlight the chars part of the block */
- if (wp->w_old_cursor_fcol + txtcol < (colnr_T)W_WIDTH(wp))
- {
- if (wp->w_old_cursor_lcol + txtcol < (colnr_T)W_WIDTH(wp))
- len = wp->w_old_cursor_lcol;
- else
- len = W_WIDTH(wp) - txtcol;
- RL_MEMSET(wp->w_old_cursor_fcol + txtcol, hl_attr(HLF_V),
- (size_t)(len - wp->w_old_cursor_fcol));
- }
- }
- else
- /* Set all attributes of the text */
- RL_MEMSET(txtcol, hl_attr(HLF_V),
- (size_t)(W_WIDTH(wp) - txtcol));
- }
- }
- #endif
-
-
- SCREEN_LINE(row + W_WINROW(wp), W_WINCOL(wp), (int)W_WIDTH(wp),
- (int)W_WIDTH(wp), FALSE);
-
- /*
- * Update w_cline_height and w_cline_folded if the cursor line was
- * updated (saves a call to plines() later).
- */
- if (wp == curwin
- && lnum <= curwin->w_cursor.lnum
- && lnume >= curwin->w_cursor.lnum)
- {
- curwin->w_cline_row = row;
- curwin->w_cline_height = 1;
- curwin->w_cline_folded = TRUE;
- curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
- }
- }
-
- /*
- * Copy "buf[len]" to ScreenLines["off"] and set attributes to "attr".
- */
- static void
- copy_text_attr(off, buf, len, attr)
- int off;
- char_u *buf;
- int len;
- int attr;
- {
- mch_memmove(ScreenLines + off, buf, (size_t)len);
- # ifdef FEAT_MBYTE
- if (enc_utf8)
- vim_memset(ScreenLinesUC + off, 0, sizeof(u8char_T) * (size_t)len);
- # endif
- vim_memset(ScreenAttrs + off, attr, (size_t)len);
- }
-
- /*
- * Fill the foldcolumn at "p" for window "wp".
- */
- static void
- fill_foldcolumn(p, wp, closed, lnum)
- char_u *p;
- win_T *wp;
- int closed; /* TRUE of FALSE */
- linenr_T lnum; /* current line number */
- {
- int i = 0;
- int level;
- int first_level;
-
- /* Init to all spaces. */
- copy_spaces(p, (size_t)wp->w_p_fdc);
-
- level = win_foldinfo.fi_level;
- if (level > 0)
- {
- /* If the column is too narrow, we start at the lowest level that
- * fits and use numbers to indicated the depth. */
- first_level = level - wp->w_p_fdc - closed + 2;
- if (first_level < 1)
- first_level = 1;
-
- for (i = 0; i + 1 < wp->w_p_fdc; ++i)
- {
- if (win_foldinfo.fi_lnum == lnum
- && first_level + i >= win_foldinfo.fi_low_level)
- p[i] = '-';
- else if (first_level == 1)
- p[i] = '|';
- else if (first_level + i <= 9)
- p[i] = '0' + first_level + i;
- else
- p[i] = '>';
- if (first_level + i == level)
- break;
- }
- }
- if (closed)
- p[i] = '+';
- }
- #endif /* FEAT_FOLDING */
-
- /*
- * Display line "lnum" of window 'wp' on the screen.
- * Start at row "startrow", stop when "endrow" is reached.
- * wp->w_virtcol needs to be valid.
- *
- * Return the number of last row the line occupies.
- */
- static int
- win_line(wp, lnum, startrow, endrow)
- win_T *wp;
- linenr_T lnum;
- int startrow;
- int endrow;
- {
- int col; /* visual column on screen */
- unsigned off; /* offset in ScreenLines/ScreenAttrs */
- int c = 0; /* init for GCC */
- long vcol = 0; /* virtual column (for tabs) */
- long vcol_prev = -1; /* "vcol" of previous character */
- char_u *line; /* current line */
- char_u *ptr; /* current position in "line" */
- int row; /* row in the window, excl w_winrow */
- int screen_row; /* row on the screen, incl w_winrow */
-
- char_u extra[18]; /* "%ld" and 'fdc' must fit in here */
- int n_extra = 0; /* number of extra chars */
- char_u *p_extra = NULL; /* string of extra chars */
- int c_extra = NUL; /* extra chars, all the same */
- int extra_attr = 0; /* attributes when n_extra != 0 */
- static char_u *at_end_str = (char_u *)""; /* used for p_extra when
- displaying lcs_eol at end-of-line */
- int lcs_eol_one = lcs_eol; /* lcs_eol until it's been used */
- int lcs_prec_todo = lcs_prec; /* lcs_prec until it's been used */
-
- /* saved "extra" items for when draw_state becomes WL_LINE (again) */
- int saved_n_extra = 0;
- char_u *saved_p_extra = NULL;
- int saved_c_extra = 0;
- int saved_char_attr = 0;
-
- int n_attr = 0; /* chars with special attr */
- int saved_attr2 = 0; /* char_attr saved for n_attr */
- int n_attr3 = 0; /* chars with overruling special attr */
- int saved_attr3 = 0; /* char_attr saved for n_attr3 */
-
- int n_skip = 0; /* nr of chars to skip for 'nowrap' */
-
- int fromcol, tocol; /* start/end of inverting */
- int fromcol_prev = -2; /* start of inverting after cursor */
- int noinvcur = FALSE; /* don't invert the cursor */
- #ifdef FEAT_VISUAL
- pos_T *top, *bot;
- #endif
- pos_T pos;
- long v;
-
- int char_attr = 0; /* attributes for next character */
- int area_highlighting = FALSE; /* Visual or incsearch highlighting
- in this line */
- int attr = 0; /* attributes for area highlighting */
- int area_attr = 0; /* attributes desired by highlighting */
- int search_attr = 0; /* attributes desired by 'hlsearch' */
- #ifdef FEAT_SYN_HL
- int syntax_attr = 0; /* attributes desired by syntax */
- int has_syntax = FALSE; /* this buffer has syntax highl. */
- int save_did_emsg;
- #endif
- int extra_check; /* has syntax or linebreak */
- #ifdef FEAT_MBYTE
- int multi_attr = 0; /* attributes desired by multibyte */
- int mb_l = 1; /* multi-byte byte length */
- int mb_c = 0; /* decoded multi-byte character */
- int mb_utf8 = FALSE; /* screen char is UTF-8 char */
- int u8c_c1 = 0; /* first composing UTF-8 char */
- int u8c_c2 = 0; /* second composing UTF-8 char */
- #endif
- #ifdef FEAT_DIFF
- int filler_lines; /* nr of filler lines to be drawn */
- int filler_todo; /* nr of filler lines still to do + 1 */
- int diff_attr = 0; /* attributes for changed/added line */
- int change_start = MAXCOL; /* first col of changed area */
- int change_end = -1; /* last col of changed area */
- #endif
- colnr_T trailcol = MAXCOL; /* start of trailing spaces */
- #ifdef FEAT_LINEBREAK
- int need_showbreak = FALSE;
- #endif
- #ifdef FEAT_SIGNS
- int_u sign_typenr; /* sign type (if signs are used) */
- #endif
- #if defined(FEAT_SIGNS) || (defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS))
- # define LINE_ATTR
- int line_attr = 0; /* atrribute for the whole line */
- #endif
- #ifdef FEAT_SEARCH_EXTRA
- match_T *shl; /* points to search_hl or match_hl */
- #endif
-
- /* draw_state: items that are drawn in sequence: */
- #define WL_START 0 /* nothing done yet */
- #ifdef FEAT_CMDWIN
- # define WL_CMDLINE WL_START + 1 /* cmdline window column */
- #else
- # define WL_CMDLINE WL_START
- #endif
- #ifdef FEAT_FOLDING
- # define WL_FOLD WL_CMDLINE + 1 /* 'foldcolumn' */
- #else
- # define WL_FOLD WL_CMDLINE
- #endif
- #ifdef FEAT_SIGNS
- # define WL_SIGN WL_FOLD + 1 /* column for signs */
- #else
- # define WL_SIGN WL_FOLD /* column for signs */
- #endif
- #define WL_NR WL_SIGN + 1 /* line number */
- #if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
- # define WL_SBR WL_NR + 1 /* 'showbreak' or 'diff' */
- #else
- # define WL_SBR WL_NR
- #endif
- #define WL_LINE WL_SBR + 1 /* text in the line */
- int draw_state = WL_START; /* what to draw next */
-
-
- if (startrow > endrow) /* past the end already! */
- return startrow;
-
- row = startrow;
- screen_row = row + W_WINROW(wp);
-
- /*
- * To speed up the loop below, set extra_check when there is linebreak,
- * trailing white space and/or syntax processing to be done.
- */
- #ifdef FEAT_LINEBREAK
- extra_check = wp->w_p_lbr;
- #else
- extra_check = 0;
- #endif
- #ifdef FEAT_SYN_HL
- if (syntax_present(wp->w_buffer))
- {
- /* Prepare for syntax highlighting in this line. When there is an
- * error, stop syntax highlighting. */
- save_did_emsg = did_emsg;
- did_emsg = FALSE;
- syntax_start(wp, lnum);
- if (did_emsg)
- syntax_clear(wp->w_buffer);
- else
- {
- did_emsg = save_did_emsg;
- has_syntax = TRUE;
- extra_check = TRUE;
- }
- }
- #endif
-
- /*
- * handle visual active in this window
- */
- fromcol = -10;
- tocol = MAXCOL;
- #ifdef FEAT_VISUAL
- if (VIsual_active && wp->w_buffer == curwin->w_buffer)
- {
- /* Visual is after curwin->w_cursor */
- if (ltoreq(curwin->w_cursor, VIsual))
- {
- top = &curwin->w_cursor;
- bot = &VIsual;
- }
- else /* Visual is before curwin->w_cursor */
- {
- top = &VIsual;
- bot = &curwin->w_cursor;
- }
- if (VIsual_mode == Ctrl_V) /* block mode */
- {
- if (lnum >= top->lnum && lnum <= bot->lnum)
- {
- fromcol = wp->w_old_cursor_fcol;
- tocol = wp->w_old_cursor_lcol;
- }
- }
- else /* non-block mode */
- {
- if (lnum > top->lnum && lnum <= bot->lnum)
- fromcol = 0;
- else if (lnum == top->lnum)
- {
- if (VIsual_mode == 'V') /* linewise */
- fromcol = 0;
- else
- {
- getvvcol(wp, top, (colnr_T *)&fromcol, NULL, NULL);
- if (gchar_pos(top) == NUL)
- tocol = fromcol + 1;
- }
- }
- if (VIsual_mode != 'V' && lnum == bot->lnum)
- {
- if (*p_sel == 'e' && bot->col == 0)
- {
- fromcol = -10;
- tocol = MAXCOL;
- }
- else
- {
- pos = *bot;
- if (*p_sel == 'e')
- {
- --pos.col;
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- {
- line = ml_get_buf(wp->w_buffer, lnum, FALSE);
- pos.col -= (*mb_head_off)(line, line + pos.col);
- }
- #endif
- }
- getvvcol(wp, &pos, NULL, NULL, (colnr_T *)&tocol);
- ++tocol;
- }
- }
- }
-
- #ifndef MSDOS
- /* Check if the character under the cursor should not be inverted */
- if (!highlight_match && lnum == curwin->w_cursor.lnum && wp == curwin
- # ifdef FEAT_GUI
- && !gui.in_use
- # endif
- )
- noinvcur = TRUE;
- #endif
-
- /* if inverting in this line set area_highlighting */
- if (fromcol >= 0)
- {
- area_highlighting = TRUE;
- attr = hl_attr(HLF_V);
- #if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
- if (clip_star.available && !clip_star.owned && clip_isautosel())
- attr = hl_attr(HLF_VNC);
- #endif
- }
- }
-
- /*
- * handle 'insearch' and ":s///c" highlighting
- */
- else
- #endif /* FEAT_VISUAL */
- if (highlight_match
- && wp == curwin
- && lnum >= curwin->w_cursor.lnum
- && lnum <= curwin->w_cursor.lnum + search_match_lines)
- {
- if (lnum == curwin->w_cursor.lnum)
- getvcol(curwin, &(curwin->w_cursor),
- (colnr_T *)&fromcol, NULL, NULL);
- else
- fromcol = 0;
- if (lnum == curwin->w_cursor.lnum + search_match_lines)
- {
- pos.lnum = lnum;
- pos.col = search_match_endcol;
- getvcol(curwin, &pos, (colnr_T *)&tocol, NULL, NULL);
- }
- else
- tocol = MAXCOL;
- if (fromcol == tocol) /* do at least one character */
- tocol = fromcol + 1; /* happens when past end of line */
- area_highlighting = TRUE;
- attr = hl_attr(HLF_I);
- }
-
- #ifdef FEAT_DIFF
- filler_lines = diff_check(wp, lnum);
- if (filler_lines < 0)
- {
- if (filler_lines == -1)
- {
- if (diff_find_change(wp, lnum, &change_start, &change_end))
- diff_attr = hl_attr(HLF_ADD); /* added line */
- else if (change_start == 0)
- diff_attr = hl_attr(HLF_TXD); /* changed text */
- else
- diff_attr = hl_attr(HLF_CHD); /* changed line */
- }
- else
- diff_attr = hl_attr(HLF_ADD); /* added line */
- filler_lines = 0;
- area_highlighting = TRUE;
- }
- if (lnum == wp->w_topline)
- filler_lines = wp->w_topfill;
- filler_todo = filler_lines;
- #endif
-
- #ifdef LINE_ATTR
- # ifdef FEAT_SIGNS
- /* Draw a sign at the start of the line and/or highlight the line. */
- sign_typenr = buf_getsigntype(wp->w_buffer, lnum);
- if (sign_typenr != 0)
- line_attr = sign_get_attr(sign_typenr, TRUE);
- # endif
- # if defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS)
- /* Highlight the current line in the quickfix window. */
- if (bt_quickfix(wp->w_buffer) && qf_current_entry() == lnum)
- line_attr = hl_attr(HLF_L);
- # endif
- if (line_attr != 0)
- area_highlighting = TRUE;
- #endif
-
- line = ml_get_buf(wp->w_buffer, lnum, FALSE);
- ptr = line;
-
- /* find start of trailing whitespace */
- if (wp->w_p_list && lcs_trail)
- {
- trailcol = (colnr_T)STRLEN(ptr);
- while (trailcol > (colnr_T)0 && vim_iswhite(ptr[trailcol - 1]))
- --trailcol;
- trailcol += (colnr_T) (ptr - line);
- extra_check = TRUE;
- }
-
- /*
- * 'nowrap' or 'wrap' and a single line that doesn't fit: Advance to the
- * first character to be displayed.
- */
- if (wp->w_p_wrap)
- v = wp->w_skipcol;
- else
- v = wp->w_leftcol;
- if (v > 0)
- {
- #ifdef FEAT_MBYTE
- char_u *prev_ptr = ptr;
- #endif
- while (vcol < v && *ptr != NUL)
- {
- c = win_lbr_chartabsize(wp, ptr, (colnr_T)vcol, NULL);
- vcol += c;
- #ifdef FEAT_MBYTE
- prev_ptr = ptr;
- if (has_mbyte)
- ptr += (*mb_ptr2len_check)(ptr);
- else
- #endif
- ++ptr;
- }
- /* Handle a character that's not completely on the screen: Put ptr at
- * that character but skip the first few screen characters. */
- if (vcol > v)
- {
- vcol -= c;
- #ifdef FEAT_MBYTE
- ptr = prev_ptr;
- #else
- --ptr;
- #endif
- n_skip = v - vcol;
- }
-
- /*
- * Adjust for when the inverted text is before the screen,
- * and when the start of the inverted text is before the screen.
- */
- if (tocol <= vcol)
- fromcol = 0;
- else if (fromcol >= 0 && fromcol < vcol)
- fromcol = vcol;
-
- #ifdef FEAT_LINEBREAK
- /* When w_skipcol is non-zero, first line needs 'showbreak' */
- if (wp->w_p_wrap)
- need_showbreak = TRUE;
- #endif
- }
-
- /*
- * Correct highlighting for cursor that can't be disabled.
- * Avoids having to check this for each character.
- */
- if (fromcol >= 0)
- {
- if (noinvcur)
- {
- if ((colnr_T)fromcol == wp->w_virtcol)
- {
- /* highlighting starts at cursor, let it start just after the
- * cursor */
- fromcol_prev = fromcol;
- fromcol = -1;
- }
- else if ((colnr_T)fromcol < wp->w_virtcol)
- /* restart highlighting after the cursor */
- fromcol_prev = wp->w_virtcol;
- }
- if (fromcol >= tocol)
- fromcol = -1;
- }
-
- #ifdef FEAT_SEARCH_EXTRA
- /*
- * Handle highlighting the last used search pattern.
- * Do this for both search_hl and match_hl.
- */
- shl = &search_hl;
- for (;;)
- {
- shl->startp = NULL;
- shl->endp = NULL;
- shl->attr_cur = 0;
- if (shl->rm.regprog != NULL)
- {
- v = (long)(ptr - line);
- next_search_hl(wp, shl, lnum, (colnr_T)v);
-
- /* Need to get the line again, a multi-line regexp may have made it
- * invalid. */
- line = ml_get_buf(wp->w_buffer, lnum, FALSE);
- ptr = line + v;
-
- if (shl->lnum != 0 && shl->lnum <= lnum)
- {
- if (shl->lnum == lnum)
- shl->startp = line + shl->rm.startpos[0].col;
- else
- shl->startp = line;
- if (lnum == shl->lnum + shl->rm.endpos[0].lnum
- - shl->rm.startpos[0].lnum)
- shl->endp = line + shl->rm.endpos[0].col;
- else
- shl->endp = line + MAXCOL;
- /* Highlight one character for an empty match. */
- if (shl->startp == shl->endp)
- {
- #ifdef FEAT_MBYTE
- if (has_mbyte && *shl->endp != NUL)
- shl->endp += (*mb_ptr2len_check)(shl->endp);
- else
- #endif
- ++shl->endp;
- }
- if (shl->startp < ptr) /* match at leftcol */
- {
- shl->attr_cur = shl->attr;
- search_attr = shl->attr;
- }
- area_highlighting = TRUE;
- }
- }
- if (shl == &match_hl)
- break;
- shl = &match_hl;
- }
- #endif
-
- off = (unsigned) (current_ScreenLine - ScreenLines);
- col = 0;
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- {
- /* Rightleft window: process the text in the normal direction, but put
- * it in current_ScreenLine[] from right to left. Start at the
- * rightmost column of the window. */
- col = W_WIDTH(wp) - 1;
- off += col;
- }
- #endif
-
- /*
- * Repeat for the whole displayed line.
- */
- for (;;)
- {
- /* Skip this quickly when working on the text. */
- if (draw_state != WL_LINE)
- {
- #ifdef FEAT_CMDWIN
- if (draw_state == WL_CMDLINE - 1 && n_extra == 0)
- {
- draw_state = WL_CMDLINE;
- if (cmdwin_type != 0 && wp == curwin)
- {
- /* Draw the cmdline character. */
- *extra = cmdwin_type;
- n_extra = 1;
- p_extra = extra;
- c_extra = NUL;
- char_attr = hl_attr(HLF_AT);
- }
- }
- #endif
-
- #ifdef FEAT_FOLDING
- if (draw_state == WL_FOLD - 1 && n_extra == 0)
- {
- draw_state = WL_FOLD;
- if (wp->w_p_fdc > 0)
- {
- /* Draw the 'foldcolumn'. */
- fill_foldcolumn(extra, wp, FALSE, lnum);
- n_extra = wp->w_p_fdc;
- p_extra = extra;
- c_extra = NUL;
- char_attr = hl_attr(HLF_FC);
- }
- }
- #endif
-
- #ifdef FEAT_SIGNS
- if (draw_state == WL_SIGN - 1 && n_extra == 0)
- {
- draw_state = WL_SIGN;
- if (wp->w_buffer->b_signlist != NULL
- # ifdef FEAT_DIFF
- && filler_todo <= 0
- # endif
- )
- {
- /* Draw two bytes with the sign value or blank. */
- if (sign_typenr == 0 || row > startrow)
- {
- c_extra = ' ';
- char_attr = 0;
- }
- else
- {
- # ifdef FEAT_SIGN_ICONS
- if (gui.in_use && sign_get_image(sign_typenr) != NULL)
- {
- /* Use the image in this position. */
- c_extra = SIGN_BYTE;
- char_attr = sign_typenr;
- }
- else
- # endif
- {
- p_extra = sign_get_text(sign_typenr);
- if (p_extra == NULL)
- c_extra = ' ';
- else
- c_extra = NUL;
- char_attr = sign_get_attr(sign_typenr, FALSE);
- }
- }
- n_extra = 2;
- }
- }
- #endif
-
- if (draw_state == WL_NR - 1 && n_extra == 0)
- {
- draw_state = WL_NR;
- /* Display the line number. After the first fill with blanks
- * when the 'n' flag isn't in 'cpo' */
- if (wp->w_p_nu
- && (row == startrow
- #ifdef FEAT_DIFF
- + filler_lines
- #endif
- || vim_strchr(p_cpo, CPO_NUMCOL) == NULL))
- {
- /* Draw the line number (empty space after wrapping). */
- if (row == startrow
- #ifdef FEAT_DIFF
- + filler_lines
- #endif
- )
- {
- sprintf((char *)extra, "%7ld ", (long)lnum);
- if (wp->w_skipcol > 0)
- for (p_extra = extra; *p_extra == ' '; ++p_extra)
- *p_extra = '-';
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl) /* reverse line numbers */
- {
- char_u *c1, *c2, t;
-
- for (c1 = extra, c2 = extra + STRLEN(extra) - 1;
- c1 < c2; c1++, c2--)
- {
- t = *c1;
- *c1 = *c2;
- *c2 = t;
- }
- }
- #endif
- p_extra = extra;
- c_extra = NUL;
- }
- else
- c_extra = ' ';
- n_extra = 8;
- char_attr = hl_attr(HLF_N);
- }
- }
-
- #if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
- if (draw_state == WL_SBR - 1 && n_extra == 0)
- {
- draw_state = WL_SBR;
- # ifdef FEAT_DIFF
- if (filler_todo > 0)
- {
- /* Draw "deleted" diff line(s). */
- if (char2cells(fill_diff) > 1)
- c_extra = '-';
- else
- c_extra = fill_diff;
- # ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- n_extra = col + 1;
- else
- # endif
- n_extra = W_WIDTH(wp) - col;
- char_attr = hl_attr(HLF_DED);
- }
- # endif
- # ifdef FEAT_LINEBREAK
- if (*p_sbr != NUL && need_showbreak)
- {
- /* Draw 'showbreak' at the start of each broken line. */
- p_extra = p_sbr;
- c_extra = NUL;
- n_extra = (int)STRLEN(p_sbr);
- char_attr = hl_attr(HLF_AT);
- need_showbreak = FALSE;
- /* Correct end of highlighted area for 'showbreak',
- * required when 'linebreak' is also set. */
- if (tocol == vcol)
- tocol += n_extra;
- }
- # endif
- }
- #endif
-
- if (draw_state == WL_LINE - 1 && n_extra == 0)
- {
- draw_state = WL_LINE;
- if (saved_n_extra)
- {
- /* Continue item from end of wrapped line. */
- n_extra = saved_n_extra;
- c_extra = saved_c_extra;
- p_extra = saved_p_extra;
- char_attr = saved_char_attr;
- }
- else
- char_attr = 0;
- }
- }
-
- /* When still displaying '$' of change command, stop at cursor */
- if (dollar_vcol != 0 && wp == curwin && vcol >= (long)wp->w_virtcol
- #ifdef FEAT_DIFF
- && filler_todo <= 0
- #endif
- )
- {
- SCREEN_LINE(screen_row, W_WINCOL(wp), col, -(int)W_WIDTH(wp),
- wp->w_p_rl);
- /* Pretend we have finished updating the window. */
- row = wp->w_height;
- break;
- }
-
- if (draw_state == WL_LINE && area_highlighting)
- {
- /* handle Visual or match highlighting in this line */
- if (vcol == fromcol
- #ifdef FEAT_MBYTE
- || (has_mbyte && vcol + 1 == fromcol && n_extra == 0
- && (*mb_ptr2cells)(ptr) > 1)
- #endif
- || ((int)vcol_prev == fromcol_prev
- && vcol < tocol))
- area_attr = attr; /* start highlighting */
- else if (area_attr != 0
- && (vcol == tocol
- || (noinvcur && (colnr_T)vcol == wp->w_virtcol)))
- #ifdef LINE_ATTR
- area_attr = line_attr; /* stop highlighting */
- else if (line_attr && ((fromcol == -10 && tocol == MAXCOL)
- || (vcol < fromcol || vcol > tocol)))
- area_attr = line_attr;
- #else
- area_attr = 0; /* stop highlighting */
- #endif
-
- #ifdef FEAT_SEARCH_EXTRA
- if (!n_extra)
- {
- /*
- * Check for start/end of search pattern match.
- * After end, check for start/end of next match.
- * When another match, have to check for start again.
- * Watch out for matching an empty string!
- * Do this first for search_hl, then for match_hl, so that
- * ":match" overrules 'hlsearch'.
- */
- shl = &search_hl;
- for (;;)
- {
- for (;;)
- {
- if (shl->startp != NULL
- && ptr >= shl->startp
- && ptr < shl->endp)
- {
- shl->attr_cur = shl->attr;
- }
- else if (ptr == shl->endp)
- {
- shl->attr_cur = 0;
-
- v = (long)(ptr - line);
- next_search_hl(wp, shl, lnum, (colnr_T)v);
-
- /* Need to get the line again, a multi-line regexp
- * may have made it invalid. */
- line = ml_get_buf(wp->w_buffer, lnum, FALSE);
- ptr = line + v;
-
- if (shl->lnum == lnum)
- {
- shl->startp = line + shl->rm.startpos[0].col;
- if (shl->rm.endpos[0].lnum == 0)
- shl->endp = line + shl->rm.endpos[0].col;
- else
- shl->endp = line + MAXCOL;
-
- /* for a non-null match, loop to check if the
- * match starts at the current position */
- if (shl->startp != shl->endp)
- continue;
-
- /* highlight empty match, try again after it */
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- shl->endp += (*mb_ptr2len_check)(shl->endp);
- else
- #endif
- ++shl->endp;
- }
- }
- break;
- }
- if (shl == &match_hl)
- break;
- shl = &match_hl;
- }
- /* ":match" highlighting overrules 'hlsearch' */
- if (match_hl.attr_cur != 0)
- search_attr = match_hl.attr_cur;
- else
- search_attr = search_hl.attr_cur;
- }
- #endif
-
- if (area_attr != 0)
- char_attr = area_attr;
- #ifdef FEAT_SYN_HL
- else if (search_attr == 0 && has_syntax)
- char_attr = syntax_attr;
- #endif
- else
- char_attr = search_attr;
-
- #ifdef FEAT_DIFF
- if (diff_attr != 0 && n_extra == 0)
- {
- if (diff_attr == hl_attr(HLF_CHD) && ptr - line >= change_start)
- diff_attr = hl_attr(HLF_TXD); /* changed text */
- if (diff_attr == hl_attr(HLF_TXD) && ptr - line > change_end)
- diff_attr = hl_attr(HLF_CHD); /* changed line */
- if (attr == 0 || area_attr != attr)
- area_attr = diff_attr;
- if (attr == 0 || char_attr != attr)
- char_attr = diff_attr;
- }
- #endif
- }
-
- /*
- * Get the next character to put on the screen.
- */
- /*
- * The 'extra' array contains the extra stuff that is inserted to
- * represent special characters (non-printable stuff). When all
- * characters are the same, c_extra is used.
- * For the '$' of the 'list' option, n_extra == 1, p_extra == "".
- */
- if (n_extra > 0)
- {
- if (c_extra != NUL)
- {
- c = c_extra;
- #ifdef FEAT_MBYTE
- mb_c = c; /* doesn't handle multi-byte! */
- #endif
- }
- else
- {
- c = *p_extra;
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- {
- mb_c = c;
- if (enc_utf8)
- {
- /* If the UTF-8 character is more than one byte:
- * Decode it into "mb_c". */
- mb_l = (*mb_ptr2len_check)(p_extra);
- mb_utf8 = FALSE;
- if (mb_l > n_extra)
- mb_l = 1;
- else if (mb_l > 1)
- {
- mb_c = utfc_ptr2char(p_extra, &u8c_c1, &u8c_c2);
- mb_utf8 = TRUE;
- }
- }
- else
- {
- /* if this is a DBCS character, put it in "mb_c" */
- mb_l = MB_BYTE2LEN(c);
- if (mb_l >= n_extra)
- mb_l = 1;
- else if (mb_l > 1)
- mb_c = (c << 8) + p_extra[1];
- }
- /* If a double-width char doesn't fit display a '>' in the
- * last column. */
- if (
- # ifdef FEAT_RIGHTLEFT
- wp->w_p_rl ? (col <= 0) :
- # endif
- (col >= W_WIDTH(wp) - 1)
- && (*mb_char2cells)(mb_c) == 2)
- {
- c = '>';
- mb_c = c;
- mb_l = 1;
- mb_utf8 = FALSE;
- multi_attr = hl_attr(HLF_AT);
- /* put the pointer back to output the double-width
- * character at the start of the next line. */
- ++n_extra;
- --p_extra;
- }
- else
- {
- n_extra -= mb_l - 1;
- p_extra += mb_l - 1;
- }
- }
- #endif
- ++p_extra;
- }
- --n_extra;
- }
- else
- {
- /*
- * Get a character from the line itself.
- */
- c = *ptr;
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- {
- mb_c = c;
- if (enc_utf8)
- {
- /* If the UTF-8 character is more than one byte: Decode it
- * into "mb_c". */
- mb_l = (*mb_ptr2len_check)(ptr);
- mb_utf8 = FALSE;
- if (mb_l > 1)
- {
- mb_c = utfc_ptr2char(ptr, &u8c_c1, &u8c_c2);
- /* Overlong encoded ASCII or ASCII with composing char
- * is displayed normally, except a NUL. */
- if (mb_c < 0x80)
- c = mb_c;
- mb_utf8 = TRUE;
- }
- if ((mb_l == 1 && c >= 0x80)
- || (mb_l >= 1 && mb_c == 0)
- || (mb_l > 1 && !vim_isprintc(mb_c)))
- {
- /*
- * Illegal UTF-8 byte: display as <xx>.
- */
- transchar_hex(extra, mb_c);
- p_extra = extra;
- c = *p_extra++;
- mb_c = c;
- mb_utf8 = FALSE;
- n_extra = (int)STRLEN(p_extra);
- c_extra = NUL;
- if (area_attr == 0 && search_attr == 0)
- {
- n_attr = n_extra + 1;
- extra_attr = hl_attr(HLF_8);
- saved_attr2 = char_attr; /* save current attr */
- }
- }
- else if (mb_l == 0) /* at the NUL at end-of-line */
- mb_l = 1;
- }
- else /* enc_dbcs */
- {
- mb_l = MB_BYTE2LEN(c);
- if (mb_l == 0) /* at the NUL at end-of-line */
- mb_l = 1;
- else if (mb_l > 1)
- {
- if (ptr[1] != NUL)
- mb_c = (c << 8) + ptr[1];
- else
- {
- /* head byte at end of line */
- mb_l = 1;
- transchar_nonprint(extra, c);
- p_extra = extra;
- n_extra = (int)STRLEN(extra) - 1;
- c_extra = NUL;
- c = *p_extra++;
- if (area_attr == 0 && search_attr == 0)
- {
- n_attr = n_extra + 1;
- extra_attr = hl_attr(HLF_8);
- saved_attr2 = char_attr; /* save current attr */
- }
- mb_c = c;
- }
- }
- }
- /* If a double-width char doesn't fit display a '>' in the
- * last column; the character is displayed at the start of the
- * next line. */
- if ((
- # ifdef FEAT_RIGHTLEFT
- wp->w_p_rl ? (col <= 0) :
- # endif
- (col >= W_WIDTH(wp) - 1))
- && (*mb_char2cells)(mb_c) == 2)
- {
- c = '>';
- mb_c = c;
- mb_utf8 = FALSE;
- mb_l = 1;
- multi_attr = hl_attr(HLF_AT);
- /* Put pointer back so that the character will be
- * displayed at the start of the next line. */
- --ptr;
- }
- else if (*ptr != NUL)
- ptr += mb_l - 1;
-
- /* If a double-width char doesn't fit at the left side display
- * a '<' in the first column. */
- if (n_skip > 0 && mb_l > 1)
- {
- extra[0] = '<';
- p_extra = extra;
- n_extra = 1;
- c_extra = NUL;
- c = ' ';
- if (area_attr == 0 && search_attr == 0)
- {
- n_attr = n_extra + 1;
- extra_attr = hl_attr(HLF_AT);
- saved_attr2 = char_attr; /* save current attr */
- }
- mb_c = c;
- mb_utf8 = FALSE;
- mb_l = 1;
- }
-
- }
- #endif
- ++ptr;
-
- if (extra_check)
- {
- #ifdef FEAT_SYN_HL
- if (has_syntax)
- {
- /* Get the syntax attribute for the character. If there
- * is an error, disable syntax highlighting. */
- save_did_emsg = did_emsg;
- did_emsg = FALSE;
-
- v = (long)(ptr - line);
- syntax_attr = get_syntax_attr((colnr_T)v - 1);
-
- if (did_emsg)
- syntax_clear(wp->w_buffer);
- else
- did_emsg = save_did_emsg;
-
- /* Need to get the line again, a multi-line regexp may
- * have made it invalid. */
- line = ml_get_buf(wp->w_buffer, lnum, FALSE);
- ptr = line + v;
-
- if (area_attr == 0 && search_attr == 0)
- char_attr = syntax_attr;
- }
- #endif
- #ifdef FEAT_LINEBREAK
- /*
- * Found last space before word: check for line break
- */
- if (wp->w_p_lbr && vim_isbreak(c) && !vim_isbreak(*ptr)
- && !wp->w_p_list)
- {
- n_extra = win_lbr_chartabsize(wp, ptr - (
- # ifdef FEAT_MBYTE
- has_mbyte ? mb_l :
- # endif
- 1), (colnr_T)vcol, NULL) - 1;
- c_extra = ' ';
- if (vim_iswhite(c))
- c = ' ';
- }
- #endif
-
- if (trailcol != MAXCOL && ptr > line + trailcol && c == ' ')
- {
- c = lcs_trail;
- if (area_attr == 0 && search_attr == 0)
- {
- n_attr = 1;
- extra_attr = hl_attr(HLF_8);
- saved_attr2 = char_attr; /* save current attr */
- }
- }
- }
-
- /*
- * Handling of non-printable characters.
- */
- if (!(chartab[c] & CT_PRINT_CHAR))
- {
- /*
- * when getting a character from the file, we may have to
- * turn it into something else on the way to putting it
- * into "ScreenLines".
- */
- if (c == TAB && (!wp->w_p_list || lcs_tab1))
- {
- /* tab amount depends on current column */
- n_extra = (int)wp->w_buffer->b_p_ts
- - vcol % (int)wp->w_buffer->b_p_ts - 1;
- if (wp->w_p_list)
- {
- c = lcs_tab1;
- c_extra = lcs_tab2;
- n_attr = n_extra + 1;
- extra_attr = hl_attr(HLF_8);
- saved_attr2 = char_attr; /* save current attr */
- }
- else
- {
- c_extra = ' ';
- c = ' ';
- }
- #ifdef FEAT_MBYTE
- mb_utf8 = FALSE; /* don't draw as UTF-8 */
- #endif
- }
- else if (c == NUL && wp->w_p_list && lcs_eol_one != NUL)
- {
- #if defined(FEAT_DIFF) || defined(LINE_ATTR)
- /* For a diff line the highlighting continues after the
- * "$". */
- if (
- # ifdef FEAT_DIFF
- diff_attr == 0
- # ifdef LINE_ATTR
- &&
- # endif
- # endif
- # ifdef LINE_ATTR
- line_attr == 0
- # endif
- )
- #endif
- {
- #ifdef FEAT_VIRTUALEDIT
- /* In virtualedit, visual selections may extend
- * beyond end of line. */
- if (area_highlighting && virtual_active()
- && tocol != MAXCOL && vcol < tocol)
- n_extra = 0;
- else
- #endif
- {
- p_extra = at_end_str;
- n_extra = 1;
- c_extra = NUL;
- }
- }
- c = lcs_eol;
- lcs_eol_one = NUL;
- --ptr; /* put it back at the NUL */
- if (area_attr == 0 && search_attr == 0)
- {
- extra_attr = hl_attr(HLF_AT);
- n_attr = 1;
- }
- #ifdef FEAT_MBYTE
- mb_utf8 = FALSE; /* don't draw as UTF-8 */
- #endif
- }
- else if (c != NUL)
- {
- p_extra = transchar(c);
- n_extra = byte2cells(c) - 1;
- c_extra = NUL;
- c = *p_extra++;
- if (area_attr == 0 && search_attr == 0)
- {
- n_attr = n_extra + 1;
- extra_attr = hl_attr(HLF_8);
- saved_attr2 = char_attr; /* save current attr */
- }
- #ifdef FEAT_MBYTE
- mb_utf8 = FALSE; /* don't draw as UTF-8 */
- #endif
- }
- #ifdef FEAT_VIRTUALEDIT
- else if (VIsual_active
- && (VIsual_mode == Ctrl_V
- || VIsual_mode == 'v')
- && virtual_active()
- && tocol != MAXCOL
- && vcol < tocol
- && (
- # ifdef FEAT_RIGHTLEFT
- wp->w_p_rl ? (col >= 0) :
- # endif
- (col < W_WIDTH(wp))))
- {
- c = ' ';
- --ptr; /* put it back at the NUL */
- }
- #endif
- #if defined(FEAT_DIFF) || defined(LINE_ATTR)
- else if ((
- # ifdef FEAT_DIFF
- diff_attr != 0
- # ifdef LINE_ATTR
- ||
- # endif
- # endif
- # ifdef LINE_ATTR
- line_attr != 0
- # endif
- ) && col < W_WIDTH(wp))
- {
- /* Highlight until the right side of the window */
- c = ' ';
- --ptr; /* put it back at the NUL */
- # ifdef FEAT_DIFF
- if (diff_attr == hl_attr(HLF_TXD))
- {
- diff_attr = hl_attr(HLF_CHD);
- if (attr == 0 || char_attr != attr)
- char_attr = diff_attr;
- }
- # endif
- }
- #endif
- }
- }
-
- /* Don't override visual selection highlighting. */
- if (n_attr > 0
- && (area_attr == 0 || char_attr != area_attr)
- && (search_attr == 0 || char_attr != search_attr))
- char_attr = extra_attr;
-
- /*
- * Handle the case where we are in column 0 but not on the first
- * character of the line and the user wants us to show us a
- * special character (via 'listchars' option "precedes:<char>".
- */
- if (lcs_prec_todo != NUL
- && (wp->w_p_wrap ? wp->w_skipcol > 0 : wp->w_leftcol > 0)
- #ifdef FEAT_DIFF
- && filler_todo <= 0
- #endif
- && draw_state > WL_NR
- && c != NUL)
- {
- c = lcs_prec;
- lcs_prec_todo = NUL;
- #ifdef FEAT_MBYTE
- mb_utf8 = FALSE; /* don't draw as UTF-8 */
- #endif
- if ((area_attr == 0 || char_attr != area_attr)
- && (search_attr == 0 || char_attr != search_attr))
- {
- saved_attr3 = char_attr; /* save current attr */
- char_attr = hl_attr(HLF_AT); /* later copied to char_attr */
- n_attr3 = 1;
- }
- }
-
- /*
- * At end of the text line.
- */
- if (c == NUL)
- {
- /* invert at least one char, used for Visual and empty line or
- * highlight match at end of line. If it's beyond the last
- * char on the screen, just overwrite that one (tricky!) Not
- * needed when a '$' was displayed for 'list'. */
- if (lcs_eol == lcs_eol_one
- && ((area_attr != 0 && vcol == fromcol)
- #ifdef FEAT_SEARCH_EXTRA
- /* highlight 'hlsearch' match at end of line */
- || ptr - 1 == search_hl.startp
- || ptr - 1 == match_hl.startp
- #endif
- ))
- {
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- {
- if (col < 0)
- {
- ++off;
- ++col;
- }
- }
- else
- #endif
- {
- if (col >= W_WIDTH(wp))
- {
- --off;
- --col;
- }
- }
- ScreenLines[off] = ' ';
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- ScreenLinesUC[off] = 0;
- #endif
- #ifdef FEAT_SEARCH_EXTRA
- if (area_attr == 0)
- {
- if (ptr - 1 == match_hl.startp)
- char_attr = match_hl.attr;
- else
- char_attr = search_hl.attr;
- }
- #endif
- ScreenAttrs[off] = char_attr;
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- --col;
- else
- #endif
- ++col;
- }
-
- SCREEN_LINE(screen_row, W_WINCOL(wp), col, (int)W_WIDTH(wp),
- wp->w_p_rl);
- row++;
-
- /*
- * Update w_cline_height and w_cline_folded if the cursor line was
- * updated (saves a call to plines() later).
- */
- if (wp == curwin && lnum == curwin->w_cursor.lnum)
- {
- curwin->w_cline_row = startrow;
- curwin->w_cline_height = row - startrow;
- #ifdef FEAT_FOLDING
- curwin->w_cline_folded = FALSE;
- #endif
- curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
- }
-
- break;
- }
-
- /* line continues beyond line end */
- if (lcs_ext
- && !wp->w_p_wrap
- #ifdef FEAT_DIFF
- && filler_todo <= 0
- #endif
- && (
- #ifdef FEAT_RIGHTLEFT
- wp->w_p_rl ? col == 0 :
- #endif
- col == W_WIDTH(wp) - 1)
- && (*ptr != NUL
- || (wp->w_p_list && lcs_eol != NUL && p_extra != at_end_str)
- || (n_extra && (c_extra != NUL || *p_extra != NUL))))
- {
- c = lcs_ext;
- char_attr = hl_attr(HLF_AT);
- }
-
- /*
- * Store character to be displayed.
- * Skip characters that are left of the screen for 'nowrap'.
- */
- vcol_prev = vcol;
- if (draw_state < WL_LINE || n_skip <= 0)
- {
- /*
- * Store the character.
- */
- #if defined(FEAT_RIGHTLEFT) && defined(FEAT_MBYTE)
- if (has_mbyte && wp->w_p_rl && (*mb_char2cells)(mb_c) > 1)
- {
- /* A double-wide character is: put first halve in left cell. */
- --off;
- --col;
- }
- #endif
- ScreenLines[off] = c;
- #ifdef FEAT_MBYTE
- if (enc_dbcs == DBCS_JPNU)
- ScreenLines2[off] = mb_c & 0xff;
- else if (enc_utf8)
- {
- if (mb_utf8)
- {
- ScreenLinesUC[off] = mb_c;
- ScreenLinesC1[off] = u8c_c1;
- ScreenLinesC2[off] = u8c_c2;
- }
- else
- ScreenLinesUC[off] = 0;
- }
- if (multi_attr)
- {
- ScreenAttrs[off] = multi_attr;
- multi_attr = 0;
- }
- else
- #endif
- ScreenAttrs[off] = char_attr;
-
- #ifdef FEAT_MBYTE
- if (has_mbyte && (*mb_char2cells)(mb_c) > 1)
- {
- /* Need to fill two screen columns. */
- ++off;
- ++col;
- if (enc_utf8)
- /* UTF-8: Put a 0 in the second screen char. */
- ScreenLines[off] = 0;
- else
- /* DBCS: Put second byte in the second screen char. */
- ScreenLines[off] = mb_c & 0xff;
- ++vcol;
- /* When "tocol" is halfway a character, set it to the end of
- * the character, otherwise highlighting won't stop. */
- if (tocol == vcol)
- ++tocol;
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- {
- /* now it's time to backup one cell */
- --off;
- --col;
- }
- #endif
- }
- #endif
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- {
- --off;
- --col;
- }
- else
- #endif
- {
- ++off;
- ++col;
- }
- }
- else
- --n_skip;
-
- /* Only advance the "vcol" when after the 'number' column. */
- if (draw_state >= WL_SBR
- #ifdef FEAT_DIFF
- && filler_todo <= 0
- #endif
- )
- ++vcol;
-
- /* restore attributes after "predeces" in 'listchars' */
- if (n_attr3 && --n_attr3 == 0)
- char_attr = saved_attr3;
-
- /* restore attributes after last 'listchars' or 'number' char */
- if (n_attr && --n_attr == 0)
- char_attr = saved_attr2;
-
- /*
- * At end of screen line and there is more to come: Display the line
- * so far. If there is no more to display it is catched above.
- */
- if ((
- #ifdef FEAT_RIGHTLEFT
- wp->w_p_rl ? (col < 0) :
- #endif
- (col >= W_WIDTH(wp)))
- && (*ptr != NUL
- #ifdef FEAT_DIFF
- || filler_todo > 0
- #endif
- || (wp->w_p_list && lcs_eol != NUL && p_extra != at_end_str)
- || (n_extra != 0 && (c_extra != NUL || *p_extra != NUL)))
- )
- {
- SCREEN_LINE(screen_row, W_WINCOL(wp), col, (int)W_WIDTH(wp),
- wp->w_p_rl);
- ++row;
- ++screen_row;
-
- /* When not wrapping and finished diff lines, break here. */
- if (!wp->w_p_wrap
- #ifdef FEAT_DIFF
- && filler_todo <= 0
- #endif
- )
- break;
-
- /* When the window is too narrow draw all "@" lines. */
- if (draw_state != WL_LINE
- #ifdef FEAT_DIFF
- && filler_todo <= 0
- #endif
- )
- {
- win_draw_end(wp, '@', ' ', row, wp->w_height, HLF_AT);
- #ifdef FEAT_VERTSPLIT
- draw_vsep_win(wp, row);
- #endif
- row = endrow;
- }
-
- /* When line got too long for screen break here. */
- if (row == endrow)
- {
- ++row;
- break;
- }
-
- /*
- * Special trick to make copy/paste of wrapped lines work with
- * xterm/screen: write an extra character beyond the end of the
- * line. This will work with all terminal types (regardless of the
- * xn,am settings).
- * Only do this on a fast tty.
- * Only do this if the cursor is on the current line (something
- * has been written in it).
- * Don't do this for the GUI.
- * Don't do this for double-width characters.
- * Don't do this for a window not at the right screen border.
- */
- if (p_tf && screen_cur_row == screen_row - 1
- #ifdef FEAT_GUI
- && !gui.in_use
- #endif
- #ifdef FEAT_DIFF
- && filler_todo <= 0
- #endif
- #ifdef FEAT_MBYTE
- && !(has_mbyte
- && ((*mb_off2cells)(LineOffset[screen_row]) == 2
- || (*mb_off2cells)(LineOffset[screen_row - 1]
- + (int)Columns - 2) == 2))
- #endif
- && W_WIDTH(wp) == Columns)
- {
- /* First make sure we are at the end of the screen line, then
- * output an arbitrary character to let the terminal know
- * about the wrap. */
- if (screen_cur_col != W_WIDTH(wp))
- screen_char(LineOffset[screen_row - 1]
- + (unsigned)Columns - 1,
- screen_row - 1, (int)(Columns - 1));
- out_char(' ');
- /* force a redraw of the first char on the next line */
- ScreenAttrs[LineOffset[screen_row]] = (sattr_T)-1;
- screen_start(); /* don't know where cursor is now */
- }
-
- col = 0;
- off = (unsigned)(current_ScreenLine - ScreenLines);
- #ifdef FEAT_RIGHTLEFT
- if (wp->w_p_rl)
- {
- col = W_WIDTH(wp) - 1; /* col is not used if breaking! */
- off += col;
- }
- #endif
-
- /* reset the drawing state for the start of a wrapped line */
- draw_state = WL_START;
- saved_n_extra = n_extra;
- saved_p_extra = p_extra;
- saved_c_extra = c_extra;
- saved_char_attr = char_attr;
- n_extra = 0;
- lcs_prec_todo = lcs_prec;
- #ifdef FEAT_LINEBREAK
- # ifdef FEAT_DIFF
- if (filler_todo <= 0)
- # endif
- need_showbreak = TRUE;
- #endif
- #ifdef FEAT_DIFF
- --filler_todo;
- /* When the filler lines are actually below the last line of the
- * file, don't draw the line itself, break here. */
- if (filler_todo == 0 && wp->w_botfill)
- break;
- #endif
- }
-
- } /* for every character in the line */
-
- return row;
- }
-
- /*
- * Check whether the given character needs redrawing:
- * - the (first byte of the) character is different
- * - the attributes are different
- * - the character is multi-byte and the next byte is different
- */
- static int
- char_needs_redraw(off_from, off_to, cols)
- int off_from;
- int off_to;
- int cols;
- {
- if (cols > 0
- && ((ScreenLines[off_from] != ScreenLines[off_to]
- || ScreenAttrs[off_from] != ScreenAttrs[off_to])
-
- #ifdef FEAT_MBYTE
- || (enc_dbcs != 0
- && MB_BYTE2LEN(ScreenLines[off_from]) > 1
- && (enc_dbcs == DBCS_JPNU && ScreenLines[off_from] == 0x8e
- ? ScreenLines2[off_from] != ScreenLines2[off_to]
- : (cols > 1 && ScreenLines[off_from + 1]
- != ScreenLines[off_to + 1])))
- || (enc_utf8
- && (ScreenLinesUC[off_from] != ScreenLinesUC[off_to]
- || (ScreenLinesUC[off_from] != 0
- && (ScreenLinesC1[off_from]
- != ScreenLinesC1[off_to]
- || ScreenLinesC2[off_from]
- != ScreenLinesC2[off_to]))))
- #endif
- ))
- return TRUE;
- return FALSE;
- }
-
- /*
- * Move one "cooked" screen line to the screen, but only the characters that
- * have actually changed. Handle insert/delete character.
- * "coloff" gives the first column on the screen for this line.
- * "endcol" gives the columns where valid characters are.
- * "clear_width" is the width of the window. It's > 0 if the rest of the line
- * needs to be cleared, negative otherwise.
- * "rlflag" is TRUE in a rightleft window:
- * When TRUE and "clear_width" > 0, clear columns 0 to "endcol"
- * When FALSE and "clear_width" > 0, clear columns "endcol" to "clear_width"
- */
- static void
- screen_line(row, coloff, endcol, clear_width
- #ifdef FEAT_RIGHTLEFT
- , rlflag
- #endif
- )
- int row;
- int coloff;
- int endcol;
- int clear_width;
- #ifdef FEAT_RIGHTLEFT
- int rlflag;
- #endif
- {
- unsigned off_from;
- unsigned off_to;
- int col = 0;
- #if defined(FEAT_GUI) || defined(UNIX) || defined(FEAT_VERTSPLIT)
- int hl;
- #endif
- int force = FALSE; /* force update rest of the line */
- int redraw_this /* bool: does character need redraw? */
- #ifdef FEAT_GUI
- = TRUE /* For GUI when while-loop empty */
- #endif
- ;
- int redraw_next; /* redraw_this for next character */
- #ifdef FEAT_MBYTE
- int clear_next = FALSE;
- int char_cells; /* 1: normal char */
- /* 2: occupies two display cells */
- # define CHAR_CELLS char_cells
- #else
- # define CHAR_CELLS 1
- #endif
-
- # ifdef FEAT_CLIPBOARD
- clip_may_clear_selection(row, row);
- # endif
-
- off_from = (unsigned) (current_ScreenLine - ScreenLines);
- off_to = LineOffset[row] + coloff;
-
- #ifdef FEAT_RIGHTLEFT
- if (rlflag)
- {
- /* Clear rest first, because it's left of the text. */
- if (clear_width > 0)
- {
- while (col <= endcol && ScreenLines[off_to] == ' '
- && ScreenAttrs[off_to] == 0)
- {
- ++off_to;
- ++col;
- }
- if (col <= endcol)
- screen_fill(row, row + 1, col + coloff,
- endcol + coloff + 1, ' ', ' ', 0);
- }
- col = endcol + 1;
- off_to = LineOffset[row] + col + coloff;
- off_from += col;
- endcol = (clear_width > 0 ? clear_width : -clear_width);
- }
- #endif /* FEAT_RIGHTLEFT */
-
- redraw_next = char_needs_redraw(off_from, off_to, endcol - col);
-
- while (col < endcol)
- {
- #ifdef FEAT_MBYTE
- if (has_mbyte && (col + 1 < endcol))
- char_cells = (*mb_off2cells)(off_from);
- else
- char_cells = 1;
- #endif
-
- redraw_this = redraw_next;
- redraw_next = force || char_needs_redraw(off_from + CHAR_CELLS,
- off_to + CHAR_CELLS, endcol - col - CHAR_CELLS);
-
- #ifdef FEAT_GUI
- /* If the next character was bold, then redraw the current character to
- * remove any pixels that might have spilt over into us. This only
- * happens in the GUI.
- */
- if (redraw_next && gui.in_use)
- {
- hl = ScreenAttrs[off_to + CHAR_CELLS];
- if (hl > HL_ALL || (hl & HL_BOLD))
- redraw_this = TRUE;
- }
- #endif
-
- if (redraw_this)
- {
- /*
- * Special handling when 'xs' termcap flag set (hpterm):
- * Attributes for characters are stored at the position where the
- * cursor is when writing the highlighting code. The
- * start-highlighting code must be written with the cursor on the
- * first highlighted character. The stop-highlighting code must
- * be written with the cursor just after the last highlighted
- * character.
- * Overwriting a character doesn't remove it's highlighting. Need
- * to clear the rest of the line, and force redrawing it
- * completely.
- */
- if ( p_wiv
- && !force
- #ifdef FEAT_GUI
- && !gui.in_use
- #endif
- && ScreenAttrs[off_to] != 0
- && ScreenAttrs[off_from] != ScreenAttrs[off_to])
- {
- /*
- * Need to remove highlighting attributes here.
- */
- windgoto(row, col + coloff);
- out_str(T_CE); /* clear rest of this screen line */
- screen_start(); /* don't know where cursor is now */
- force = TRUE; /* force redraw of rest of the line */
- redraw_next = TRUE; /* or else next char would miss out */
-
- /*
- * If the previous character was highlighted, need to stop
- * highlighting at this character.
- */
- if (col + coloff > 0 && ScreenAttrs[off_to - 1] != 0)
- {
- screen_attr = ScreenAttrs[off_to - 1];
- term_windgoto(row, col + coloff);
- screen_stop_highlight();
- }
- else
- screen_attr = 0; /* highlighting has stopped */
- }
- #ifdef FEAT_MBYTE
- if (enc_dbcs != 0)
- {
- /* Check if overwriting a double-byte with a single-byte or
- * the other way around requires another character to be
- * redrawn. For UTF-8 this isn't needed, because comparing
- * ScreenLinesUC[] is sufficient. */
- if (char_cells == 1
- && col + 1 < endcol
- && (*mb_off2cells)(off_to) > 1)
- {
- /* Writing a single-cell character over a double-cell
- * character: need to redraw the next cell. */
- ScreenLines[off_to + 1] = 0;
- redraw_next = TRUE;
- }
- else if (char_cells == 2
- && col + 2 < endcol
- && (*mb_off2cells)(off_to) == 1
- && (*mb_off2cells)(off_to + 1) > 1)
- {
- /* Writing the second half of a double-cell character over
- * a double-cell character: need to redraw the second
- * cell. */
- ScreenLines[off_to + 2] = 0;
- redraw_next = TRUE;
- }
-
- if (enc_dbcs == DBCS_JPNU)
- ScreenLines2[off_to] = ScreenLines2[off_from];
- }
- /* When writing a single-width character over a double-width
- * character and at the end of the redrawn text, need to clear out
- * the right halve of the old character. */
- if (has_mbyte && char_cells == 1 && col + 1 == endcol
- && (*mb_off2cells)(off_to) > 1)
- clear_next = TRUE;
- #endif
-
- ScreenLines[off_to] = ScreenLines[off_from];
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- {
- ScreenLinesUC[off_to] = ScreenLinesUC[off_from];
- ScreenLinesC1[off_to] = ScreenLinesC1[off_from];
- ScreenLinesC2[off_to] = ScreenLinesC2[off_from];
- }
- if (char_cells == 2)
- ScreenLines[off_to + 1] = ScreenLines[off_from + 1];
- #endif
-
- #if defined(FEAT_GUI) || defined(UNIX)
- /* The bold trick makes a single row of pixels appear in the next
- * character. When a bold character is removed, the next
- * character should be redrawn too. This happens for our own GUI
- * and for some xterms. */
- if (
- # ifdef FEAT_GUI
- gui.in_use
- # endif
- # if defined(FEAT_GUI) && defined(UNIX)
- ||
- # endif
- # ifdef UNIX
- term_is_xterm
- # endif
- )
- {
- hl = ScreenAttrs[off_to];
- if (hl > HL_ALL || (hl & HL_BOLD))
- redraw_next = TRUE;
- }
- #endif
- ScreenAttrs[off_to] = ScreenAttrs[off_from];
- #ifdef FEAT_MBYTE
- if (enc_dbcs != 0 && char_cells == 2)
- {
- /* just a hack: It makes two bytes of DBCS have same attr */
- ScreenAttrs[off_to + 1] = ScreenAttrs[off_from];
- screen_char_2(off_to, row, col + coloff);
- }
- else
- #endif
- screen_char(off_to, row, col + coloff);
- }
- else if ( p_wiv
- #ifdef FEAT_GUI
- && !gui.in_use
- #endif
- && col + coloff > 0)
- {
- if (ScreenAttrs[off_to] == ScreenAttrs[off_to - 1])
- {
- /*
- * Don't output stop-highlight when moving the cursor, it will
- * stop the highlighting when it should continue.
- */
- screen_attr = 0;
- }
- else if (screen_attr != 0)
- screen_stop_highlight();
- }
-
- off_to += CHAR_CELLS;
- off_from += CHAR_CELLS;
- col += CHAR_CELLS;
- }
-
- #ifdef FEAT_MBYTE
- if (clear_next)
- {
- /* Clear the second half of a double-wide character of which the left
- * half was overwritten with a single-wide character. */
- ScreenLines[off_to] = ' ';
- if (enc_utf8)
- ScreenLinesUC[off_to] = 0;
- screen_char(off_to, row, col + coloff);
- }
- #endif
-
- if (clear_width > 0
- #ifdef FEAT_RIGHTLEFT
- && !rlflag
- #endif
- )
- {
- #ifdef FEAT_GUI
- int startCol = col;
- #endif
-
- /* blank out the rest of the line */
- while (col < clear_width && ScreenLines[off_to] == ' '
- && ScreenAttrs[off_to] == 0)
- {
- ++off_to;
- ++col;
- }
- if (col < clear_width)
- {
- #ifdef FEAT_GUI
- /*
- * In the GUI, clearing the rest of the line may leave pixels
- * behind if the first character cleared was bold. Some bold
- * fonts spill over the left. In this case we redraw the previous
- * character too. If we didn't skip any blanks above, then we
- * only redraw if the character wasn't already redrawn anyway.
- */
- if (gui.in_use && (col > startCol || !redraw_this)
- # ifdef FEAT_MBYTE
- && enc_dbcs == 0
- # endif
- )
- {
- hl = ScreenAttrs[off_to];
- if (hl > HL_ALL || (hl & HL_BOLD))
- screen_char(off_to - 1, row, col + coloff - 1);
- }
- #endif
- screen_fill(row, row + 1, col + coloff, clear_width + coloff,
- ' ', ' ', 0);
- #ifdef FEAT_VERTSPLIT
- off_to += clear_width - col;
- col = clear_width;
- #endif
- }
- }
-
- #ifdef FEAT_VERTSPLIT
- if (clear_width > 0)
- {
- /* For a window that's left of another, draw the separator char. */
- if (col + coloff < Columns)
- {
- int c;
-
- c = fillchar_vsep(&hl);
- if (ScreenLines[off_to] != c || ScreenAttrs[off_to] != hl)
- {
- ScreenLines[off_to] = c;
- ScreenAttrs[off_to] = hl;
- # ifdef FEAT_MBYTE
- if (enc_utf8)
- ScreenLinesUC[off_to] = 0;
- # endif
- screen_char(off_to, row, col + coloff);
- }
- }
- }
- #endif
- }
-
- #if defined(FEAT_WINDOWS) || defined(PROTO)
- /*
- * mark all status lines for redraw; used after first :cd
- */
- void
- status_redraw_all()
- {
- win_T *wp;
-
- for (wp = firstwin; wp; wp = wp->w_next)
- if (wp->w_status_height)
- {
- wp->w_redr_status = TRUE;
- redraw_later(VALID);
- }
- }
-
- /*
- * mark all status lines of the current buffer for redraw
- */
- void
- status_redraw_curbuf()
- {
- win_T *wp;
-
- for (wp = firstwin; wp; wp = wp->w_next)
- if (wp->w_status_height != 0 && wp->w_buffer == curbuf)
- {
- wp->w_redr_status = TRUE;
- redraw_later(VALID);
- }
- }
-
- /*
- * Redraw all status lines that need to be redrawn.
- */
- void
- redraw_statuslines()
- {
- win_T *wp;
-
- for (wp = firstwin; wp; wp = wp->w_next)
- if (wp->w_redr_status)
- win_redr_status(wp);
- }
- #endif
-
- #if defined(FEAT_WILDMENU) && defined(FEAT_VERTSPLIT)
- /*
- * Redraw all status lines at the bottom of frame "frp".
- */
- static void
- win_redraw_last_status(frp)
- frame_T *frp;
- {
- if (frp->fr_layout == FR_LEAF)
- frp->fr_win->w_redr_status = TRUE;
- else if (frp->fr_layout == FR_ROW)
- {
- for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
- win_redraw_last_status(frp);
- }
- else /* frp->fr_layout == FR_COL */
- {
- frp = frp->fr_child;
- while (frp->fr_next != NULL)
- frp = frp->fr_next;
- win_redraw_last_status(frp);
- }
- }
- #endif
-
- #ifdef FEAT_VERTSPLIT
- /*
- * Draw the verticap separator right of window "wp" starting with line "row".
- */
- static void
- draw_vsep_win(wp, row)
- win_T *wp;
- int row;
- {
- int hl;
- int c;
-
- if (wp->w_vsep_width)
- {
- /* draw the vertical separator right of this window */
- c = fillchar_vsep(&hl);
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + wp->w_height,
- W_ENDCOL(wp), W_ENDCOL(wp) + 1,
- c, ' ', hl);
- }
- }
- #endif
-
- #ifdef FEAT_WILDMENU
- /*
- * Private gettail for win_redr_status_matches(): Find tail of file name path
- * but ignore trailing "/".
- */
- static char_u *wm_gettail __ARGS((char_u *s));
- static int status_match_len __ARGS((expand_T *xp, char_u *s));
-
- static char_u *
- wm_gettail(s)
- char_u *s;
- {
- char_u *p;
- char_u *t = s;
- int had_sep = FALSE;
-
- for (p = s; *p != NUL; )
- {
- if (vim_ispathsep(*p))
- had_sep = TRUE;
- else if (had_sep)
- {
- t = p;
- had_sep = FALSE;
- }
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- p += (*mb_ptr2len_check)(p);
- else
- #endif
- ++p;
- }
- return t;
- }
-
- /*
- * Get the lenght of an item as it will be shown in that status line.
- */
- static int
- status_match_len(xp, s)
- expand_T *xp;
- char_u *s;
- {
- int len = 0;
-
- #ifdef FEAT_MENU
- int emenu = (xp->xp_context == EXPAND_MENUS
- || xp->xp_context == EXPAND_MENUNAMES);
-
- /* Check for menu separators - replace with '|'. */
- if (emenu && menu_is_separator(s))
- return 1;
- #endif
-
- while (*s != NUL)
- {
- /* Don't display backslashes used for escaping, they look ugly. */
- if (rem_backslash(s)
- #ifdef FEAT_MENU
- || (emenu && (s[0] == '\\' && s[1] != NUL))
- #endif
- )
- ++s;
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- {
- len += ptr2cells(s);
- s += (*mb_ptr2len_check)(s);
- }
- else
- #endif
- len += ptr2cells(s++);
-
- }
-
- return len;
- }
-
- /*
- * Show wildchar matches in the status line.
- * Show at least the "match" item.
- * We start at item 'first_match' in the list and show all matches that fit.
- *
- * If inversion is possible we use it. Else '=' characters are used.
- */
- void
- win_redr_status_matches(xp, num_matches, matches, match)
- expand_T *xp;
- int num_matches;
- char_u **matches; /* list of matches */
- int match;
- {
- #define L_MATCH(m) (fmatch ? wm_gettail(matches[m]) : matches[m])
- int fmatch = (xp->xp_context == EXPAND_FILES);
-
- int row;
- char_u *buf;
- int len;
- int clen; /* lenght in screen cells */
- int fillchar;
- int attr;
- int i;
- int highlight = TRUE;
- char_u *selstart = NULL;
- int selstart_col = 0;
- char_u *selend = NULL;
- static int first_match = 0;
- int add_left = FALSE;
- char_u *s;
- #ifdef FEAT_MENU
- int emenu;
- #endif
- #if defined(FEAT_MBYTE) || defined(FEAT_MENU)
- int l;
- #endif
-
- if (matches == NULL) /* interrupted completion? */
- return;
-
- buf = alloc((unsigned)Columns + 1);
- if (buf == NULL)
- return;
-
- if (match == -1) /* don't show match but original text */
- {
- match = 0;
- highlight = FALSE;
- }
- /* count 1 for the ending ">" */
- clen = status_match_len(xp, L_MATCH(match)) + 3;
- if (match == 0)
- first_match = 0;
- else if (match < first_match)
- {
- /* jumping left, as far as we can go */
- first_match = match;
- add_left = TRUE;
- }
- else
- {
- /* check if match fits on the screen */
- for (i = first_match; i < match; ++i)
- clen += status_match_len(xp, L_MATCH(i)) + 2;
- if (first_match > 0)
- clen += 2;
- /* jumping right, put match at the left */
- if ((long)clen > Columns)
- {
- first_match = match;
- /* if showing the last match, we can add some on the left */
- clen = 2;
- for (i = match; i < num_matches; ++i)
- {
- clen += status_match_len(xp, L_MATCH(i)) + 2;
- if ((long)clen >= Columns)
- break;
- }
- if (i == num_matches)
- add_left = TRUE;
- }
- }
- if (add_left)
- while (first_match > 0)
- {
- clen += status_match_len(xp, L_MATCH(first_match - 1)) + 2;
- if ((long)clen >= Columns)
- break;
- --first_match;
- }
-
- fillchar = fillchar_status(&attr, TRUE);
-
- if (first_match == 0)
- {
- *buf = NUL;
- len = 0;
- }
- else
- {
- STRCPY(buf, "< ");
- len = 2;
- }
- clen = len;
-
- i = first_match;
- while ((long)(clen + status_match_len(xp, L_MATCH(i)) + 2) < Columns)
- {
- if (i == match)
- {
- selstart = buf + len;
- selstart_col = clen;
- }
-
- s = L_MATCH(i);
- /* Check for menu separators - replace with '|' */
- #ifdef FEAT_MENU
- emenu = (xp->xp_context == EXPAND_MENUS
- || xp->xp_context == EXPAND_MENUNAMES);
- if (emenu && menu_is_separator(s))
- {
- STRCPY(buf + len, transchar('|'));
- l = (int)STRLEN(buf + len);
- len += l;
- clen += l;
- }
- else
- #endif
- for ( ; *s != NUL; ++s)
- {
- /* Don't display backslashes used for escaping, they look ugly. */
- if (rem_backslash(s)
- #ifdef FEAT_MENU
- || (emenu
- && (s[0] == '\t' || (s[0] == '\\' && s[1] != NUL)))
- #endif
- )
- ++s;
- clen += ptr2cells(s);
- #ifdef FEAT_MBYTE
- if (has_mbyte && (l = (*mb_ptr2len_check)(s)) > 1)
- {
- STRNCPY(buf + len, s, l);
- s += l - 1;
- len += l;
- }
- else
- #endif
- {
- STRCPY(buf + len, transchar(*s));
- len += (int)STRLEN(buf + len);
- }
- }
- if (i == match)
- selend = buf + len;
-
- *(buf + len++) = ' ';
- *(buf + len++) = ' ';
- clen += 2;
- if (++i == num_matches)
- break;
- }
-
- if (i != num_matches)
- {
- *(buf + len++) = '>';
- ++clen;
- }
-
- buf[len] = NUL;
-
- row = cmdline_row - 1;
- if (row >= 0)
- {
- if (!wild_menu_showing)
- {
- if (msg_scrolled && !wild_menu_showing)
- {
- /* Put the wildmenu just above the command line. If there is
- * no room, scroll the screen one line up. */
- if (cmdline_row == Rows - 1)
- {
- screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL);
- ++msg_scrolled;
- }
- else
- {
- ++cmdline_row;
- ++row;
- }
- wild_menu_showing = WM_SCROLLED;
- }
- else
- {
- /* create status line if needed */
- if (lastwin->w_status_height == 0)
- {
- save_p_ls = p_ls;
- p_ls = 2;
- last_status(FALSE);
- }
- wild_menu_showing = WM_SHOWN;
- }
- }
-
- screen_puts(buf, row, 0, attr);
- if (selstart != NULL && highlight)
- {
- *selend = NUL;
- screen_puts(selstart, row, selstart_col, hl_attr(HLF_WM));
- }
-
- screen_fill(row, row + 1, clen, (int)Columns, fillchar, fillchar, attr);
- }
-
- #ifdef FEAT_VERTSPLIT
- win_redraw_last_status(topframe);
- #else
- lastwin->w_redr_status = TRUE;
- #endif
- vim_free(buf);
- }
- #endif
-
- #if defined(FEAT_WINDOWS) || defined(PROTO)
- /*
- * Redraw the status line of window wp.
- *
- * If inversion is possible we use it. Else '=' characters are used.
- */
- void
- win_redr_status(wp)
- win_T *wp;
- {
- int row;
- char_u *p;
- int len;
- int fillchar;
- int attr;
- int this_ru_col;
-
- wp->w_redr_status = FALSE;
- if (wp->w_status_height == 0)
- {
- /* no status line, can only be last window */
- redraw_cmdline = TRUE;
- }
- else if (!redrawing())
- {
- /* Don't redraw right now, do it later. */
- wp->w_redr_status = TRUE;
- }
- #ifdef FEAT_STL_OPT
- else if (*p_stl)
- {
- /* redraw custom status line */
- win_redr_custom(wp, FALSE);
- }
- #endif
- else
- {
- fillchar = fillchar_status(&attr, wp == curwin);
-
- if (buf_spname(wp->w_buffer) != NULL)
- STRCPY(NameBuff, buf_spname(wp->w_buffer));
- else
- {
- home_replace(wp->w_buffer, wp->w_buffer->b_fname, NameBuff,
- MAXPATHL, TRUE);
- trans_characters(NameBuff, MAXPATHL);
- }
- p = NameBuff;
- len = (int)STRLEN(p);
-
- if (wp->w_buffer->b_help
- #ifdef FEAT_QUICKFIX
- || wp->w_p_pvw
- #endif
- || bufIsChanged(wp->w_buffer)
- || wp->w_buffer->b_p_ro)
- *(p + len++) = ' ';
- if (wp->w_buffer->b_help)
- {
- STRCPY(p + len, _("[help]"));
- len += (int)STRLEN(p + len);
- }
- #ifdef FEAT_QUICKFIX
- if (wp->w_p_pvw)
- {
- STRCPY(p + len, _("[Preview]"));
- len += (int)STRLEN(p + len);
- }
- #endif
- if (bufIsChanged(wp->w_buffer))
- {
- STRCPY(p + len, "[+]");
- len += 3;
- }
- if (wp->w_buffer->b_p_ro)
- {
- STRCPY(p + len, "[RO]");
- len += 4;
- }
-
- #ifndef FEAT_VERTSPLIT
- this_ru_col = ru_col;
- if (this_ru_col < (Columns + 1) / 2)
- this_ru_col = (Columns + 1) / 2;
- #else
- this_ru_col = ru_col - (Columns - W_WIDTH(wp));
- if (this_ru_col < (W_WIDTH(wp) + 1) / 2)
- this_ru_col = (W_WIDTH(wp) + 1) / 2;
- if (this_ru_col <= 1)
- {
- p = (char_u *)"<"; /* No room for file name! */
- len = 1;
- }
- else
- #endif
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- {
- int clen = 0, i;
-
- p[len] = NUL;
- /* Count total number of display cells. */
- for (i = 0; p[i] != NUL; i += (*mb_ptr2len_check)(p + i))
- clen += (*mb_ptr2cells)(p + i);
- /* Find first character that will fit.
- * Going from start to end is much faster for DBCS. */
- for (i = 0; p[i] != NUL && clen > this_ru_col - 1;
- i += (*mb_ptr2len_check)(p + i))
- clen -= (*mb_ptr2cells)(p + i);
- if (i > 0)
- {
- p = p + i - 1;
- *p = '<';
- len = len - i + 1;
- }
-
- }
- else
- #endif
- if (len > this_ru_col - 1)
- {
- p += len - (this_ru_col - 1);
- *p = '<';
- len = this_ru_col - 1;
- }
-
- row = W_WINROW(wp) + wp->w_height;
- screen_puts(p, row, W_WINCOL(wp), attr);
- screen_fill(row, row + 1, len + W_WINCOL(wp),
- this_ru_col + W_WINCOL(wp), fillchar, fillchar, attr);
-
- if (get_keymap_str(wp, NameBuff, MAXPATHL)
- && (int)(this_ru_col - len) > (int)(STRLEN(NameBuff) + 1))
- screen_puts(NameBuff, row, (int)(this_ru_col - STRLEN(NameBuff)
- - 1 + W_WINCOL(wp)), attr);
-
- #ifdef FEAT_CMDL_INFO
- win_redr_ruler(wp, TRUE);
- #endif
- }
-
- #ifdef FEAT_VERTSPLIT
- /*
- * May need to draw the character below the vertical separator.
- */
- if (wp->w_vsep_width != 0)
- {
- if (stl_connected(wp))
- fillchar = fillchar_status(&attr, wp == curwin);
- else
- fillchar = fillchar_vsep(&attr);
- screen_putchar(fillchar, W_WINROW(wp) + wp->w_height, W_ENDCOL(wp),
- attr);
- }
- #endif
- }
-
- # ifdef FEAT_VERTSPLIT
- /*
- * Return TRUE if the status line of window "wp" is connected to the status
- * line of the window right of it. If not, then it's a vertical separator.
- * Only call if (wp->w_vsep_width != 0).
- */
- int
- stl_connected(wp)
- win_T *wp;
- {
- frame_T *fr;
-
- fr = wp->w_frame;
- while (fr->fr_parent != NULL)
- {
- if (fr->fr_parent->fr_layout == FR_COL)
- {
- if (fr->fr_next != NULL)
- break;
- }
- else
- {
- if (fr->fr_next != NULL)
- return TRUE;
- }
- fr = fr->fr_parent;
- }
- return FALSE;
- }
- # endif
-
- #endif /* FEAT_WINDOWS */
-
- #if defined(FEAT_WINDOWS) || defined(FEAT_STL_OPT) || defined(PROTO)
- /*
- * Get the value to show for the language mappings, active 'keymap'.
- */
- int
- get_keymap_str(wp, buf, len)
- win_T *wp;
- char_u *buf; /* buffer for the result */
- int len; /* length of buffer */
- {
- char_u *p;
-
- if (wp->w_buffer->b_p_iminsert != B_IMODE_LMAP)
- return FALSE;
-
- {
- #ifdef FEAT_EVAL
- buf_T *old_curbuf = curbuf;
- win_T *old_curwin = curwin;
- char_u *s;
-
- curbuf = wp->w_buffer;
- curwin = wp;
- STRCPY(buf, "b:keymap_name"); /* must be writable */
- ++emsg_skip;
- s = p = eval_to_string(buf, NULL);
- --emsg_skip;
- curbuf = old_curbuf;
- curwin = old_curwin;
- if (p == NULL || *p == NUL)
- #endif
- {
- #ifdef FEAT_KEYMAP
- if (wp->w_buffer->b_kmap_state & KEYMAP_LOADED)
- p = wp->w_buffer->b_p_keymap;
- else
- #endif
- p = (char_u *)"lang";
- }
- if ((int)(STRLEN(p) + 3) < len)
- sprintf((char *)buf, "<%s>", p);
- else
- buf[0] = NUL;
- #ifdef FEAT_EVAL
- vim_free(s);
- #endif
- }
- return buf[0] != NUL;
- }
- #endif
-
- #if defined(FEAT_STL_OPT) || defined(PROTO)
- /*
- * Redraw the status line or ruler of window wp.
- */
- static void
- win_redr_custom(wp, Ruler)
- win_T *wp;
- int Ruler;
- {
- int attr;
- int curattr;
- int row;
- int col = 0;
- int maxlen;
- int n;
- int len;
- int fillchar;
- char_u buf[MAXPATHL];
- char_u *p;
- char_u c;
- struct stl_hlrec hl[STL_MAX_ITEM];
-
- /* setup environment for the task at hand */
- row = W_WINROW(wp) + wp->w_height;
- fillchar = fillchar_status(&attr, wp == curwin);
- maxlen = W_WIDTH(wp);
- p = p_stl;
- if (Ruler)
- {
- p = p_ruf;
- /* advance past any leading group spec - implicit in ru_col */
- if (*p == '%')
- {
- if (*++p == '-')
- p++;
- if (atoi((char *) p))
- while (isdigit(*p))
- p++;
- if (*p++ != '(')
- p = p_ruf;
- }
- #ifdef FEAT_VERTSPLIT
- col = ru_col - (Columns - W_WIDTH(wp));
- if (col < (W_WIDTH(wp) + 1) / 2)
- col = (W_WIDTH(wp) + 1) / 2;
- #else
- col = ru_col;
- if (col > (Columns + 1) / 2)
- col = (Columns + 1) / 2;
- #endif
- maxlen = W_WIDTH(wp) - col;
- #ifdef FEAT_WINDOWS
- if (!wp->w_status_height)
- #endif
- {
- row = Rows - 1;
- --maxlen; /* writing in last column may cause scrolling */
- fillchar = ' ';
- attr = 0;
- }
- }
- if (maxlen >= sizeof(buf))
- maxlen = sizeof(buf) - 1;
- if (maxlen <= 0)
- return;
- #ifdef FEAT_VERTSPLIT
- col += W_WINCOL(wp);
- #endif
-
- len = build_stl_str_hl(wp, buf, p, fillchar, maxlen, hl);
-
- for (p = buf + len; p < buf + maxlen; p++)
- *p = fillchar;
- buf[maxlen] = 0;
-
- curattr = attr;
- p = buf;
- for (n = 0; hl[n].start != NULL; n++)
- {
- c = hl[n].start[0];
- hl[n].start[0] = 0;
- screen_puts(p, row, col, curattr);
-
- hl[n].start[0] = c;
- col += (int)(hl[n].start - p);
- p = hl[n].start;
-
- if (hl[n].userhl == 0)
- curattr = attr;
- #ifdef FEAT_WINDOWS
- else if (wp != curwin && wp->w_status_height != 0)
- curattr = highlight_stlnc[hl[n].userhl - 1];
- #endif
- else
- curattr = highlight_user[hl[n].userhl - 1];
- }
- screen_puts(p, row, col, curattr);
- }
-
- #endif /* FEAT_STL_OPT */
-
- /*
- * Output a single character directly to the screen and update ScreenLines.
- * Not for multi-byte chars!
- */
- void
- screen_putchar(c, row, col, attr)
- int c;
- int row, col;
- int attr;
- {
- char_u buf[2];
-
- {
- buf[0] = c;
- buf[1] = NUL;
- screen_puts(buf, row, col, attr);
- }
- }
-
- /*
- * Get a single character directly from ScreenLines.
- * Also return its attribute in *attrp;
- * For multi-byte chars only the first byte is obtained!
- */
- int
- screen_getchar(row, col, attrp)
- int row, col;
- int *attrp;
- {
- unsigned off;
-
- /* safety check */
- if (ScreenLines != NULL && row < screen_Rows && col < screen_Columns)
- {
- off = LineOffset[row] + col;
- *attrp = ScreenAttrs[off];
- return ScreenLines[off];
- }
- return 0;
- }
-
- /*
- * Put string '*text' on the screen at position 'row' and 'col', with
- * attributes 'attr', and update ScreenLines[] and ScreenAttrs[].
- * Note: only outputs within one row, message is truncated at screen boundary!
- * Note: if ScreenLines[], row and/or col is invalid, nothing is done.
- */
- void
- screen_puts(text, row, col, attr)
- char_u *text;
- int row;
- int col;
- int attr;
- {
- unsigned off;
- char_u *ptr = text;
- #ifdef FEAT_MBYTE
- int mbyte_blen = 1;
- int mbyte_cells = 1;
- int u8c = 0;
- int u8c_c1 = 0;
- int u8c_c2 = 0;
- int clear_next_cell = FALSE;
- #endif
-
- if (ScreenLines != NULL && row < screen_Rows) /* safety check */
- {
- off = LineOffset[row] + col;
- while (*ptr != NUL && col < screen_Columns)
- {
- #ifdef FEAT_MBYTE
- /* check if this is the first byte of a multibyte */
- if (has_mbyte)
- {
- mbyte_blen = (*mb_ptr2len_check)(ptr);
- if (enc_dbcs == DBCS_JPNU && *ptr == 0x8e)
- mbyte_cells = 1;
- else if (enc_dbcs != 0)
- mbyte_cells = mbyte_blen;
- else /* enc_utf8 */
- {
- u8c = utfc_ptr2char(ptr, &u8c_c1, &u8c_c2);
- mbyte_cells = utf_char2cells(u8c);
- }
- }
- #endif
-
- if (ScreenLines[off] != *ptr
- #ifdef FEAT_MBYTE
- || (mbyte_cells == 2
- && ScreenLines[off + 1] != (enc_dbcs ? ptr[1] : 0))
- || (enc_dbcs == DBCS_JPNU
- && *ptr == 0x8e
- && ScreenLines2[off] != ptr[1])
- || (enc_utf8
- && mbyte_blen > 1
- && (ScreenLinesUC[off] != u8c
- || ScreenLinesC1[off] != u8c_c1
- || ScreenLinesC2[off] != u8c_c2))
- #endif
- || ScreenAttrs[off] != attr
- || exmode_active
- )
- {
- #if defined(FEAT_GUI) || defined(UNIX)
- /* The bold trick makes a single row of pixels appear in the
- * next character. When a bold character is removed, the next
- * character should be redrawn too. This happens for our own
- * GUI and for some xterms.
- * Don't do this for the last drawn character, because the
- * next character may not be redrawn. */
- if (
- # ifdef FEAT_GUI
- gui.in_use
- # endif
- # if defined(FEAT_GUI) && defined(UNIX)
- ||
- # endif
- # ifdef UNIX
- term_is_xterm
- # endif
- )
- {
- int n;
-
- n = ScreenAttrs[off];
- # ifdef FEAT_MBYTE
- if (col + 1 + mbyte_cells - 1 < screen_Columns
- && (n > HL_ALL || (n & HL_BOLD))
- && ptr[mbyte_blen] != NUL)
- ScreenLines[off + 1 + mbyte_cells - 1] = 0;
- # else
- if (col + 1 < screen_Columns
- && (n > HL_ALL || (n & HL_BOLD))
- && ptr[1] != NUL)
- ScreenLines[off + 1] = 0;
- # endif
- }
- #endif
- #ifdef FEAT_MBYTE
- /* When at the end of the text and overwriting a two-cell
- * character with a one-cell character, need to clear the next
- * cell. */
- if (has_mbyte && mbyte_cells == 1 && ptr[mbyte_blen] == NUL
- && (*mb_off2cells)(off) > 1)
- clear_next_cell = TRUE;
- #endif
- ScreenLines[off] = *ptr;
- ScreenAttrs[off] = attr;
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- {
- if (*ptr < 0x80 && u8c_c1 == 0 && u8c_c2 == 0)
- ScreenLinesUC[off] = 0;
- else
- {
- ScreenLinesUC[off] = u8c;
- ScreenLinesC1[off] = u8c_c1;
- ScreenLinesC2[off] = u8c_c2;
- }
- if (mbyte_cells == 2)
- {
- ScreenLines[off + 1] = 0;
- ScreenAttrs[off + 1] = attr;
- }
- screen_char(off, row, col);
- }
- else if (mbyte_cells == 2)
- {
- ScreenLines[off + 1] = ptr[1];
- ScreenAttrs[off + 1] = attr;
- screen_char_2(off, row, col);
- }
- else if (enc_dbcs == DBCS_JPNU && *ptr == 0x8e)
- {
- ScreenLines2[off] = ptr[1];
- screen_char(off, row, col);
- }
- else
- #endif
- screen_char(off, row, col);
- }
- #ifdef FEAT_MBYTE
- if (has_mbyte)
- {
- off += mbyte_cells;
- col += mbyte_cells;
- ptr += mbyte_blen;
- if (clear_next_cell)
- {
- ptr = (char_u *)" ";
- clear_next_cell = FALSE;
- }
- }
- else
- #endif
- {
- ++off;
- ++col;
- ++ptr;
- }
- }
- }
- }
-
- #ifdef FEAT_SEARCH_EXTRA
- /*
- * Prepare for 'searchhl' highlighting.
- */
- static void
- start_search_hl()
- {
- if (p_hls && !no_hlsearch)
- {
- last_pat_prog(&search_hl.rm);
- search_hl.attr = hl_attr(HLF_L);
- }
- }
-
- /*
- * Clean up for 'searchhl' highlighting.
- */
- static void
- end_search_hl()
- {
- if (search_hl.rm.regprog != NULL)
- {
- vim_free(search_hl.rm.regprog);
- search_hl.rm.regprog = NULL;
- }
- }
-
- /*
- * Advance to the match in window "wp" line "lnum" or past it.
- */
- static void
- prepare_search_hl(wp, lnum)
- win_T *wp;
- linenr_T lnum;
- {
- match_T *shl; /* points to search_hl or match_hl */
- int n;
-
- /*
- * When using a multi-line pattern, start searching at the top
- * of the window or just after a closed fold.
- * Do this both for search_hl and match_hl.
- */
- shl = &search_hl;
- for (;;)
- {
- if (shl->rm.regprog != NULL
- && shl->lnum == 0
- && re_multiline(shl->rm.regprog))
- {
- if (shl->first_lnum == 0)
- {
- # ifdef FEAT_FOLDING
- for (shl->first_lnum = lnum;
- shl->first_lnum > wp->w_topline; --shl->first_lnum)
- if (hasFoldingWin(wp, shl->first_lnum - 1,
- NULL, NULL, TRUE, NULL))
- break;
- # else
- shl->first_lnum = wp->w_topline;
- # endif
- }
- n = 0;
- while (shl->first_lnum < lnum)
- {
- next_search_hl(wp, shl, shl->first_lnum, (colnr_T)n);
- if (shl->lnum != 0)
- {
- shl->first_lnum = shl->lnum
- + shl->rm.endpos[0].lnum
- - shl->rm.startpos[0].lnum;
- n = shl->rm.endpos[0].col;
- }
- else
- {
- ++shl->first_lnum;
- n = 0;
- }
- }
- }
- if (shl == &match_hl)
- break;
- shl = &match_hl;
- }
- }
-
- /*
- * Search for a next 'searchl' or ":match" match.
- * Uses shl->buf.
- * Sets shl->lnum and shl->rm contents.
- * Note: Assumes a previous match is always before "lnum", unless
- * shl->lnum is zero.
- * Careful: Any pointers for buffer lines will become invalid.
- */
- static void
- next_search_hl(win, shl, lnum, mincol)
- win_T *win;
- match_T *shl; /* points to search_hl or match_hl */
- linenr_T lnum;
- colnr_T mincol; /* minimal column for a match */
- {
- linenr_T l;
- colnr_T matchcol;
- long nmatched;
-
- if (shl->lnum != 0)
- {
- /* Check for three situations:
- * 1. If the "lnum" is below a previous match, start a new search.
- * 2. If the previous match includes "mincol", use it.
- * 3. Continue after the previous match.
- */
- l = shl->lnum + shl->rm.endpos[0].lnum - shl->rm.startpos[0].lnum;
- if (lnum > l)
- shl->lnum = 0;
- else if (lnum < l || shl->rm.endpos[0].col > mincol)
- return;
- }
-
- /*
- * Repeat searching for a match until one is found that includes "mincol"
- * or none is found in this line.
- */
- for (;;)
- {
- /* Three situations:
- * 1. No useful previous match: search from start of line.
- * 2. Not Vi compatible or empty match: continue at next character.
- * Break the loop if this is beyond the end of the line.
- * 3. Vi compatible searching: continue at end of previous match.
- */
- if (shl->lnum == 0)
- matchcol = 0;
- else if (vim_strchr(p_cpo, CPO_SEARCH) == NULL
- || (shl->rm.endpos[0].lnum == 0
- && shl->rm.endpos[0].col == shl->rm.startpos[0].col))
- {
- matchcol = shl->rm.startpos[0].col + 1;
- if (ml_get_buf(shl->buf, lnum, FALSE)[matchcol - 1] == NUL)
- {
- shl->lnum = 0;
- break;
- }
- }
- else
- matchcol = shl->rm.endpos[0].col;
-
- shl->lnum = lnum;
- nmatched = vim_regexec_multi(&shl->rm, win, shl->buf, lnum, matchcol);
- if (nmatched == 0)
- {
- shl->lnum = 0; /* no match found */
- break;
- }
- if (shl->rm.startpos[0].lnum > 0
- || shl->rm.startpos[0].col >= mincol
- || nmatched > 1
- || shl->rm.endpos[0].col > mincol)
- {
- shl->lnum += shl->rm.startpos[0].lnum;
- break; /* useful match found */
- }
- }
- }
- #endif
-
- static void
- screen_start_highlight(attr)
- int attr;
- {
- attrentry_T *aep = NULL;
-
- screen_attr = attr;
- if (full_screen
- #ifdef WIN3264
- && termcap_active
- #endif
- )
- {
- #ifdef FEAT_GUI
- if (gui.in_use)
- {
- char buf[20];
-
- sprintf(buf, IF_EB("\033|%dh", ESC_STR "|%dh"), attr); /* internal GUI code */
- OUT_STR(buf);
- }
- else
- #endif
- {
- if (attr > HL_ALL) /* special HL attr. */
- {
- if (t_colors > 1)
- aep = syn_cterm_attr2entry(attr);
- else
- aep = syn_term_attr2entry(attr);
- if (aep == NULL) /* did ":syntax clear" */
- attr = 0;
- else
- attr = aep->ae_attr;
- }
- if ((attr & HL_BOLD) && T_MD != NULL) /* bold */
- out_str(T_MD);
- if ((attr & HL_STANDOUT) && T_SO != NULL) /* standout */
- out_str(T_SO);
- if ((attr & HL_UNDERLINE) && T_US != NULL) /* underline */
- out_str(T_US);
- if ((attr & HL_ITALIC) && T_CZH != NULL) /* italic */
- out_str(T_CZH);
- if ((attr & HL_INVERSE) && T_MR != NULL) /* inverse (reverse) */
- out_str(T_MR);
-
- /*
- * Output the color or start string after bold etc., in case the
- * bold etc. override the color setting.
- */
- if (aep != NULL)
- {
- if (t_colors > 1)
- {
- if (aep->ae_u.cterm.fg_color)
- term_fg_color(aep->ae_u.cterm.fg_color - 1);
- if (aep->ae_u.cterm.bg_color)
- term_bg_color(aep->ae_u.cterm.bg_color - 1);
- }
- else
- {
- if (aep->ae_u.term.start != NULL)
- out_str(aep->ae_u.term.start);
- }
- }
- }
- }
- }
-
- void
- screen_stop_highlight()
- {
- int do_ME = FALSE; /* output T_ME code */
-
- if (screen_attr != 0
- #ifdef WIN3264
- && termcap_active
- #endif
- )
- {
- #ifdef FEAT_GUI
- if (gui.in_use)
- {
- char buf[20];
-
- /* use internal GUI code */
- sprintf(buf, IF_EB("\033|%dH", ESC_STR "|%dH"), screen_attr);
- OUT_STR(buf);
- }
- else
- #endif
- {
- if (screen_attr > HL_ALL) /* special HL attr. */
- {
- attrentry_T *aep;
-
- if (t_colors > 1)
- {
- /*
- * Assume that t_me restores the original colors!
- */
- aep = syn_cterm_attr2entry(screen_attr);
- if (aep != NULL && (aep->ae_u.cterm.fg_color
- || aep->ae_u.cterm.bg_color))
- do_ME = TRUE;
- }
- else
- {
- aep = syn_term_attr2entry(screen_attr);
- if (aep != NULL && aep->ae_u.term.stop != NULL)
- {
- if (STRCMP(aep->ae_u.term.stop, T_ME) == 0)
- do_ME = TRUE;
- else
- out_str(aep->ae_u.term.stop);
- }
- }
- if (aep == NULL) /* did ":syntax clear" */
- screen_attr = 0;
- else
- screen_attr = aep->ae_attr;
- }
-
- /*
- * Often all ending-codes are equal to T_ME. Avoid outputting the
- * same sequence several times.
- */
- if (screen_attr & HL_STANDOUT)
- {
- if (STRCMP(T_SE, T_ME) == 0)
- do_ME = TRUE;
- else
- out_str(T_SE);
- }
- if (screen_attr & HL_UNDERLINE)
- {
- if (STRCMP(T_UE, T_ME) == 0)
- do_ME = TRUE;
- else
- out_str(T_UE);
- }
- if (screen_attr & HL_ITALIC)
- {
- if (STRCMP(T_CZR, T_ME) == 0)
- do_ME = TRUE;
- else
- out_str(T_CZR);
- }
- if (do_ME || (screen_attr & (HL_BOLD | HL_INVERSE)))
- out_str(T_ME);
-
- if (t_colors > 1)
- {
- /* set Normal cterm colors */
- if (cterm_normal_fg_color != 0)
- term_fg_color(cterm_normal_fg_color - 1);
- if (cterm_normal_bg_color != 0)
- term_bg_color(cterm_normal_bg_color - 1);
- if (cterm_normal_fg_bold)
- out_str(T_MD);
- }
- }
- }
- screen_attr = 0;
- }
-
- /*
- * Reset the colors for a cterm. Used when leaving Vim.
- * The machine specific code may override this again.
- */
- void
- reset_cterm_colors()
- {
- if (t_colors > 1)
- {
- /* set Normal cterm colors */
- if (cterm_normal_fg_color > 0 || cterm_normal_bg_color > 0)
- {
- out_str(T_OP);
- screen_attr = -1;
- }
- if (cterm_normal_fg_bold)
- {
- out_str(T_ME);
- screen_attr = -1;
- }
- }
- }
-
- /*
- * Put character ScreenLines["off"] on the screen at position "row" and "col",
- * using the attributes from ScreenAttrs["off"].
- */
- static void
- screen_char(off, row, col)
- unsigned off;
- int row;
- int col;
- {
- int attr;
-
- /* Check for illegal values, just in case (could happen just after
- * resizing). */
- if (row >= screen_Rows || col >= screen_Columns)
- return;
-
- /* Outputting the last character on the screen may scrollup the screen.
- * Don't to it! Mark the character invalid (update it when scrolled up) */
- if (row == screen_Rows - 1 && col == screen_Columns - 1)
- {
- ScreenAttrs[off] = (sattr_T)-1;
- return;
- }
-
- /*
- * Stop highlighting first, so it's easier to move the cursor.
- */
- #if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT)
- if (screen_char_attr != 0)
- attr = screen_char_attr;
- else
- #endif
- attr = ScreenAttrs[off];
- if (screen_attr != attr)
- screen_stop_highlight();
-
- windgoto(row, col);
-
- if (screen_attr != attr)
- screen_start_highlight(attr);
-
- #ifdef FEAT_MBYTE
- if (enc_utf8 && ScreenLinesUC[off] != 0)
- {
- char_u buf[MB_MAXBYTES + 1];
-
- /* Convert UTF-8 character to bytes and write it. */
- buf[utfc_char2bytes(off, buf)] = NUL;
- out_str(buf);
- if (utf_char2cells(ScreenLinesUC[off]) > 1)
- ++screen_cur_col;
- }
- else
- #endif
- {
- #ifdef FEAT_MBYTE
- out_flush_check();
- #endif
- out_char(ScreenLines[off]);
- #ifdef FEAT_MBYTE
- /* double-byte character in single-width cell */
- if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
- out_char(ScreenLines2[off]);
- #endif
- }
-
- screen_cur_col++;
- }
-
- #ifdef FEAT_MBYTE
-
- /*
- * Used for enc_dbcs only: Put one double-wide character at ScreenLines["off"]
- * on the screen at position 'row' and 'col'.
- * The attributes of the first byte is used for all. This is required to
- * output the two bytes of a double-byte character with nothing in between.
- */
- static void
- screen_char_2(off, row, col)
- unsigned off;
- int row;
- int col;
- {
- /* Check for illegal values (could be wrong when screen was resized). */
- if (off + 1 >= (unsigned)(screen_Rows * screen_Columns))
- return;
-
- /* Outputting the last character on the screen may scrollup the screen.
- * Don't to it! Mark the character invalid (update it when scrolled up) */
- if (row == screen_Rows - 1 && col >= screen_Columns - 2)
- {
- ScreenAttrs[off] = (sattr_T)-1;
- return;
- }
-
- /* Output the first byte normally (positions the cursor), then write the
- * second byte directly. */
- screen_char(off, row, col);
- out_char(ScreenLines[off + 1]);
- ++screen_cur_col;
- }
- #endif
-
- #if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT) || defined(PROTO)
- /*
- * Draw a rectangle of the screen, inverted when "invert" is TRUE.
- * This uses the contents of ScreenLines[] and doesn't change it.
- */
- void
- screen_draw_rectangle(row, col, height, width, invert)
- int row;
- int col;
- int height;
- int width;
- int invert;
- {
- int r, c;
- int off;
-
- if (invert)
- screen_char_attr = HL_INVERSE;
- for (r = row; r < row + height; ++r)
- {
- off = LineOffset[r];
- for (c = col; c < col + width; ++c)
- {
- #ifdef FEAT_MBYTE
- if (enc_dbcs != 0 && dbcs_off2cells(off + c) > 1)
- {
- screen_char_2(off + c, r, c);
- ++c;
- }
- else
- #endif
- {
- screen_char(off + c, r, c);
- #ifdef FEAT_MBYTE
- if (utf_off2cells(off + c) > 1)
- ++c;
- #endif
- }
- }
- }
- screen_char_attr = 0;
- }
- #endif
-
- #ifdef FEAT_VERTSPLIT
- /*
- * Redraw the characters for a vertically split window.
- */
- static void
- redraw_block(row, end, wp)
- int row;
- int end;
- win_T *wp;
- {
- int col;
- int width;
-
- # ifdef FEAT_CLIPBOARD
- clip_may_clear_selection(row, end - 1);
- # endif
-
- if (wp == NULL)
- {
- col = 0;
- width = Columns;
- }
- else
- {
- col = wp->w_wincol;
- width = wp->w_width;
- }
- screen_draw_rectangle(row, col, end - row, width, FALSE);
- }
- #endif
-
- /*
- * Fill the screen from 'start_row' to 'end_row', from 'start_col' to 'end_col'
- * with character 'c1' in first column followed by 'c2' in the other columns.
- * Use attributes 'attr'.
- * Cannot handle multi-byte characters, c1 and c2 must be < 0x80!
- */
- void
- screen_fill(start_row, end_row, start_col, end_col, c1, c2, attr)
- int start_row, end_row;
- int start_col, end_col;
- int c1, c2;
- int attr;
- {
- int row;
- int col;
- int off;
- int end_off;
- int did_delete;
- int c;
- int norm_term;
- #if defined(FEAT_GUI) || defined(UNIX)
- int force_next = FALSE;
- #endif
-
- if (end_row > screen_Rows) /* safety check */
- end_row = screen_Rows;
- if (end_col > screen_Columns) /* safety check */
- end_col = screen_Columns;
- if (ScreenLines == NULL
- || start_row >= end_row
- || start_col >= end_col) /* nothing to do */
- return;
-
- /* it's a "normal" terminal when not in a GUI or cterm */
- norm_term = (
- #ifdef FEAT_GUI
- !gui.in_use &&
- #endif
- t_colors <= 1);
- for (row = start_row; row < end_row; ++row)
- {
- /*
- * Try to use delete-line termcap code, when no attributes or in a
- * "normal" terminal, where a bold/italic space is just a
- * space.
- */
- did_delete = FALSE;
- if (c2 == ' '
- && end_col == Columns
- && can_clear(T_CE)
- && (attr == 0
- || (norm_term
- && attr <= HL_ALL
- && ((attr & ~(HL_BOLD | HL_ITALIC)) == 0))))
- {
- /*
- * check if we really need to clear something
- */
- col = start_col;
- if (c1 != ' ') /* don't clear first char */
- ++col;
-
- off = LineOffset[row] + col;
- end_off = LineOffset[row] + end_col;
-
- /* skip blanks (used often, keep it fast!) */
- while (off < end_off && ScreenLines[off] == ' '
- && ScreenAttrs[off] == 0)
- ++off;
- if (off < end_off) /* something to be cleared */
- {
- col = off - LineOffset[row];
- screen_stop_highlight();
- term_windgoto(row, col);/* clear rest of this screen line */
- out_str(T_CE);
- screen_start(); /* don't know where cursor is now */
- col = end_col - col;
- while (col--) /* clear chars in ScreenLines */
- {
- ScreenLines[off] = ' ';
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- ScreenLinesUC[off] = 0;
- #endif
- ScreenAttrs[off] = 0;
- ++off;
- }
- }
- did_delete = TRUE; /* the chars are cleared now */
- }
-
- off = LineOffset[row] + start_col;
- c = c1;
- for (col = start_col; col < end_col; ++col)
- {
- if (ScreenLines[off] != c || ScreenAttrs[off] != attr
- #if defined(FEAT_GUI) || defined(UNIX)
- || force_next
- #endif
- )
- {
- #if defined(FEAT_GUI) || defined(UNIX)
- /* The bold trick may make a single row of pixels appear in
- * the next character. When a bold character is removed, the
- * next character should be redrawn too. This happens for our
- * own GUI and for some xterms. */
- if (
- # ifdef FEAT_GUI
- gui.in_use
- # endif
- # if defined(FEAT_GUI) && defined(UNIX)
- ||
- # endif
- # ifdef UNIX
- term_is_xterm
- # endif
- )
- {
- if (ScreenLines[off] != ' '
- && (ScreenAttrs[off] > HL_ALL
- || ScreenAttrs[off] & HL_BOLD))
- force_next = TRUE;
- else
- force_next = FALSE;
- }
- #endif
- ScreenLines[off] = c;
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- ScreenLinesUC[off] = 0;
- #endif
- ScreenAttrs[off] = attr;
- if (!did_delete || c != ' ')
- screen_char(off, row, col);
- }
- ++off;
- if (col == start_col)
- {
- if (did_delete)
- break;
- c = c2;
- }
- }
- if (row == Rows - 1) /* overwritten the command line */
- {
- redraw_cmdline = TRUE;
- if (c1 == ' ' && c2 == ' ')
- clear_cmdline = FALSE; /* command line has been cleared */
- }
- }
- }
-
- /*
- * Check if there should be a delay. Used before clearing or redrawing the
- * screen or the command line.
- */
- void
- check_for_delay(check_msg_scroll)
- int check_msg_scroll;
- {
- if ((emsg_on_display || (check_msg_scroll && msg_scroll))
- && emsg_silent == 0)
- {
- out_flush();
- ui_delay(1000L, TRUE);
- emsg_on_display = FALSE;
- if (check_msg_scroll)
- msg_scroll = FALSE;
- }
- }
-
- /*
- * screen_valid - allocate screen buffers if size changed
- * If "clear" is TRUE: clear screen if it has been resized.
- * Returns TRUE if there is a valid screen to write to.
- * Returns FALSE when starting up and screen not initialized yet.
- */
- int
- screen_valid(clear)
- int clear;
- {
- screenalloc(clear); /* allocate screen buffers if size changed */
- return (ScreenLines != NULL);
- }
-
- /*
- * Resize the shell to Rows and Columns.
- * Allocate ScreenLines[] and associated items.
- *
- * There may be some time between setting Rows and Columns and (re)allocating
- * ScreenLines[]. This happens when starting up and when (manually) changing
- * the shell size. Always use screen_Rows and screen_Columns to access items
- * in ScreenLines[]. Use Rows and Columns for positioning text etc. where the
- * final size of the shell is needed.
- */
- void
- screenalloc(clear)
- int clear;
- {
- int new_row, old_row;
- #ifdef FEAT_GUI
- int old_Rows;
- #endif
- win_T *wp;
- int outofmem = FALSE;
- int len;
- schar_T *new_ScreenLines;
- #ifdef FEAT_MBYTE
- u8char_T *new_ScreenLinesUC = NULL;
- u8char_T *new_ScreenLinesC1 = NULL;
- u8char_T *new_ScreenLinesC2 = NULL;
- schar_T *new_ScreenLines2 = NULL;
- #endif
- sattr_T *new_ScreenAttrs;
- unsigned *new_LineOffset;
- static int entered = FALSE; /* avoid recursiveness */
-
- /*
- * Allocation of the screen buffers is done only when the size changes and
- * when Rows and Columns have been set and we have started doing full
- * screen stuff.
- */
- if ((ScreenLines != NULL
- && Rows == screen_Rows
- && Columns == screen_Columns
- #ifdef FEAT_MBYTE
- && enc_utf8 == (ScreenLinesUC != NULL)
- && (enc_dbcs == DBCS_JPNU) == (ScreenLines2 != NULL)
- #endif
- )
- || Rows == 0
- || Columns == 0
- || (!full_screen && ScreenLines == NULL))
- return;
-
- /*
- * It's possible that we produce an out-of-memory message below, which
- * will cause this function to be called again. To break the loop, just
- * return here.
- */
- if (entered)
- return;
- entered = TRUE;
-
- #ifdef FEAT_GUI_BEOS
- vim_lock_screen(); /* be safe, put it here */
- #endif
-
- comp_col(); /* recompute columns for shown command and ruler */
-
- /*
- * We're changing the size of the screen.
- * - Allocate new arrays for ScreenLines and ScreenAttrs.
- * - Move lines from the old arrays into the new arrays, clear extra
- * lines (unless the screen is going to be cleared).
- * - Free the old arrays.
- *
- * If anything fails, make ScreenLines NULL, so we don't do anything!
- * Continuing with the old ScreenLines may result in a crash, because the
- * size is wrong.
- */
- #ifdef FEAT_WINDOWS
- for (wp = firstwin; wp; wp = wp->w_next)
- win_free_lsize(wp);
- #else
- win_free_lsize(curwin);
- #endif
-
- new_ScreenLines = (schar_T *)lalloc((long_u)(
- (Rows + 1) * Columns * sizeof(schar_T)), FALSE);
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- {
- new_ScreenLinesUC = (u8char_T *)lalloc((long_u)(
- (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
- new_ScreenLinesC1 = (u8char_T *)lalloc((long_u)(
- (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
- new_ScreenLinesC2 = (u8char_T *)lalloc((long_u)(
- (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
- }
- if (enc_dbcs == DBCS_JPNU)
- new_ScreenLines2 = (schar_T *)lalloc((long_u)(
- (Rows + 1) * Columns * sizeof(schar_T)), FALSE);
- #endif
- new_ScreenAttrs = (sattr_T *)lalloc((long_u)(
- (Rows + 1) * Columns * sizeof(sattr_T)), FALSE);
- new_LineOffset = (unsigned *)lalloc((long_u)(
- Rows * sizeof(unsigned)), FALSE);
-
- FOR_ALL_WINDOWS(wp)
- {
- if (win_alloc_lines(wp) == FAIL)
- {
- outofmem = TRUE;
- #ifdef FEAT_WINDOWS
- break;
- #endif
- }
- }
-
- if (new_ScreenLines == NULL
- #ifdef FEAT_MBYTE
- || (enc_utf8 && (new_ScreenLinesUC == NULL
- || new_ScreenLinesC1 == NULL || new_ScreenLinesC2 == NULL))
- || (enc_dbcs == DBCS_JPNU && new_ScreenLines2 == NULL)
- #endif
- || new_ScreenAttrs == NULL
- || new_LineOffset == NULL
- || outofmem)
- {
- do_outofmem_msg((long_u)((Rows + 1) * Columns)); /* guess the size */
- vim_free(new_ScreenLines);
- new_ScreenLines = NULL;
- #ifdef FEAT_MBYTE
- vim_free(new_ScreenLinesUC);
- new_ScreenLinesUC = NULL;
- vim_free(new_ScreenLinesC1);
- new_ScreenLinesC1 = NULL;
- vim_free(new_ScreenLinesC2);
- new_ScreenLinesC2 = NULL;
- vim_free(new_ScreenLines2);
- new_ScreenLines2 = NULL;
- #endif
- vim_free(new_ScreenAttrs);
- new_ScreenAttrs = NULL;
- vim_free(new_LineOffset);
- new_LineOffset = NULL;
- }
- else
- {
- for (new_row = 0; new_row < Rows; ++new_row)
- {
- new_LineOffset[new_row] = new_row * Columns;
-
- /*
- * If the screen is not going to be cleared, copy as much as
- * possible from the old screen to the new one and clear the rest
- * (used when resizing the window at the "--more--" prompt or when
- * executing an external command, for the GUI).
- */
- if (!clear)
- {
- (void)vim_memset(new_ScreenLines + new_row * Columns,
- ' ', (size_t)Columns * sizeof(schar_T));
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- {
- (void)vim_memset(new_ScreenLinesUC + new_row * Columns,
- 0, (size_t)Columns * sizeof(u8char_T));
- (void)vim_memset(new_ScreenLinesC1 + new_row * Columns,
- 0, (size_t)Columns * sizeof(u8char_T));
- (void)vim_memset(new_ScreenLinesC2 + new_row * Columns,
- 0, (size_t)Columns * sizeof(u8char_T));
- }
- if (enc_dbcs == DBCS_JPNU)
- (void)vim_memset(new_ScreenLines2 + new_row * Columns,
- 0, (size_t)Columns * sizeof(schar_T));
- #endif
- (void)vim_memset(new_ScreenAttrs + new_row * Columns,
- 0, (size_t)Columns * sizeof(sattr_T));
- old_row = new_row + (screen_Rows - Rows);
- if (old_row >= 0)
- {
- if (screen_Columns < Columns)
- len = screen_Columns;
- else
- len = Columns;
- mch_memmove(new_ScreenLines + new_LineOffset[new_row],
- ScreenLines + LineOffset[old_row],
- (size_t)len * sizeof(schar_T));
- #ifdef FEAT_MBYTE
- if (enc_utf8 && ScreenLinesUC != NULL)
- {
- mch_memmove(new_ScreenLinesUC + new_LineOffset[new_row],
- ScreenLinesUC + LineOffset[old_row],
- (size_t)len * sizeof(u8char_T));
- mch_memmove(new_ScreenLinesC1 + new_LineOffset[new_row],
- ScreenLinesC1 + LineOffset[old_row],
- (size_t)len * sizeof(u8char_T));
- mch_memmove(new_ScreenLinesC2 + new_LineOffset[new_row],
- ScreenLinesC2 + LineOffset[old_row],
- (size_t)len * sizeof(u8char_T));
- }
- if (enc_dbcs == DBCS_JPNU && ScreenLines2 != NULL)
- mch_memmove(new_ScreenLines2 + new_LineOffset[new_row],
- ScreenLines2 + LineOffset[old_row],
- (size_t)len * sizeof(schar_T));
- #endif
- mch_memmove(new_ScreenAttrs + new_LineOffset[new_row],
- ScreenAttrs + LineOffset[old_row],
- (size_t)len * sizeof(sattr_T));
- }
- }
- }
- /* Use the last line of the screen for the current line. */
- current_ScreenLine = new_ScreenLines + Rows * Columns;
- }
-
- vim_free(ScreenLines);
- #ifdef FEAT_MBYTE
- vim_free(ScreenLinesUC);
- vim_free(ScreenLinesC1);
- vim_free(ScreenLinesC2);
- vim_free(ScreenLines2);
- #endif
- vim_free(ScreenAttrs);
- vim_free(LineOffset);
- ScreenLines = new_ScreenLines;
- #ifdef FEAT_MBYTE
- ScreenLinesUC = new_ScreenLinesUC;
- ScreenLinesC1 = new_ScreenLinesC1;
- ScreenLinesC2 = new_ScreenLinesC2;
- ScreenLines2 = new_ScreenLines2;
- #endif
- ScreenAttrs = new_ScreenAttrs;
- LineOffset = new_LineOffset;
-
- /* It's important that screen_Rows and screen_Columns reflect the actual
- * size of ScreenLines[]. Set them before calling anything. */
- #ifdef FEAT_GUI
- old_Rows = screen_Rows;
- #endif
- screen_Rows = Rows;
- screen_Columns = Columns;
-
- must_redraw = CLEAR; /* need to clear the screen later */
- if (clear)
- screenclear2();
-
- #ifdef FEAT_GUI
- else if (gui.in_use
- && !gui.starting
- && ScreenLines != NULL
- && old_Rows != Rows)
- {
- (void)gui_redraw_block(0, 0, (int)Rows - 1, (int)Columns - 1, 0);
- /*
- * Adjust the position of the cursor, for when executing an external
- * command.
- */
- if (msg_row >= Rows) /* Rows got smaller */
- msg_row = Rows - 1; /* put cursor at last row */
- else if (Rows > old_Rows) /* Rows got bigger */
- msg_row += Rows - old_Rows; /* put cursor in same place */
- if (msg_col >= Columns) /* Columns got smaller */
- msg_col = Columns - 1; /* put cursor at last column */
- }
- #endif
-
- #ifdef FEAT_GUI_BEOS
- vim_unlock_screen();
- #endif
- entered = FALSE;
- }
-
- void
- screenclear()
- {
- check_for_delay(FALSE);
- screenalloc(FALSE); /* allocate screen buffers if size changed */
- screenclear2(); /* clear the screen */
- }
-
- static void
- screenclear2()
- {
- int i;
-
- if (starting == NO_SCREEN || ScreenLines == NULL)
- return;
-
- #ifdef FEAT_GUI
- if (!gui.in_use)
- #endif
- screen_attr = -1; /* force setting the Normal colors */
- screen_stop_highlight(); /* don't want highlighting here */
-
- #ifdef FEAT_CLIPBOARD
- /* disable selection without redrawing it */
- clip_scroll_selection(9999);
- #endif
-
- /* blank out ScreenLines */
- for (i = 0; i < Rows; ++i)
- lineclear(LineOffset[i], (int)Columns);
-
- if (can_clear(T_CL))
- {
- out_str(T_CL); /* clear the display */
- clear_cmdline = FALSE;
- }
- else
- {
- /* can't clear the screen, mark all chars with invalid attributes */
- for (i = 0; i < Rows; ++i)
- lineinvalid(LineOffset[i], (int)Columns);
- clear_cmdline = TRUE;
- }
-
- screen_cleared = TRUE; /* can use contents of ScreenLines now */
-
- win_rest_invalid(firstwin);
- redraw_cmdline = TRUE;
- if (must_redraw == CLEAR) /* no need to clear again */
- must_redraw = NOT_VALID;
- compute_cmdrow();
- msg_row = cmdline_row; /* put cursor on last line for messages */
- msg_col = 0;
- screen_start(); /* don't know where cursor is now */
- msg_scrolled = 0; /* can't scroll back */
- msg_didany = FALSE;
- msg_didout = FALSE;
- }
-
- /*
- * Clear one line in ScreenLines.
- */
- static void
- lineclear(off, width)
- unsigned off;
- int width;
- {
- (void)vim_memset(ScreenLines + off, ' ', (size_t)width * sizeof(schar_T));
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- (void)vim_memset(ScreenLinesUC + off, 0,
- (size_t)width * sizeof(u8char_T));
- #endif
- (void)vim_memset(ScreenAttrs + off, 0, (size_t)width * sizeof(sattr_T));
- }
-
- /*
- * Mark one line in ScreenLines invalid by setting the attributes to an
- * invalid value.
- */
- static void
- lineinvalid(off, width)
- unsigned off;
- int width;
- {
- (void)vim_memset(ScreenAttrs + off, -1, (size_t)width * sizeof(sattr_T));
- }
-
- #ifdef FEAT_VERTSPLIT
- /*
- * Copy part of a Screenline for vertically split window "wp".
- */
- static void
- linecopy(to, from, wp)
- int to;
- int from;
- win_T *wp;
- {
- unsigned off_to = LineOffset[to] + wp->w_wincol;
- unsigned off_from = LineOffset[from] + wp->w_wincol;
-
- mch_memmove(ScreenLines + off_to, ScreenLines + off_from,
- wp->w_width * sizeof(schar_T));
- # ifdef FEAT_MBYTE
- if (enc_utf8)
- {
- mch_memmove(ScreenLinesUC + off_to, ScreenLinesUC + off_from,
- wp->w_width * sizeof(u8char_T));
- mch_memmove(ScreenLinesC1 + off_to, ScreenLinesC1 + off_from,
- wp->w_width * sizeof(u8char_T));
- mch_memmove(ScreenLinesC2 + off_to, ScreenLinesC2 + off_from,
- wp->w_width * sizeof(u8char_T));
- }
- if (enc_dbcs == DBCS_JPNU)
- mch_memmove(ScreenLines2 + off_to, ScreenLines2 + off_from,
- wp->w_width * sizeof(schar_T));
- # endif
- mch_memmove(ScreenAttrs + off_to, ScreenAttrs + off_from,
- wp->w_width * sizeof(sattr_T));
- }
- #endif
-
- /*
- * Return TRUE if clearing with term string "p" would work.
- * It can't work when the string is empty or it won't set the right background.
- */
- int
- can_clear(p)
- char_u *p;
- {
- return (*p != NUL && (t_colors <= 1
- #ifdef FEAT_GUI
- || gui.in_use
- #endif
- || cterm_normal_bg_color == 0 || *T_UT != NUL));
- }
-
- /*
- * Reset cursor position. Use whenever cursor was moved because of outputting
- * something directly to the screen (shell commands) or a terminal control
- * code.
- */
- void
- screen_start()
- {
- screen_cur_row = screen_cur_col = 9999;
- }
-
- /*
- * Note that the cursor has gone down to the next line, column 0.
- * Used for Ex mode.
- */
- void
- screen_down()
- {
- screen_cur_col = 0;
- if (screen_cur_row < Rows - 1)
- ++screen_cur_row;
- }
-
- /*
- * Move the cursor to position "row","col" in the screen.
- * This tries to find the most efficient way to move, minimizing the number of
- * characters sent to the terminal.
- */
- void
- windgoto(row, col)
- int row;
- int col;
- {
- char_u *p;
- int i;
- int plan;
- int cost;
- int wouldbe_col;
- int noinvcurs;
- char_u *bs;
- int goto_cost;
- int attr;
-
- #define GOTO_COST 7 /* asssume a term_windgoto() takes about 7 chars */
- #define HIGHL_COST 5 /* assume unhighlight takes 5 chars */
-
- #define PLAN_LE 1
- #define PLAN_CR 2
- #define PLAN_NL 3
- #define PLAN_WRITE 4
- /* Can't use ScreenLines unless initialized */
- if (ScreenLines == NULL)
- return;
-
- if (col != screen_cur_col || row != screen_cur_row)
- {
- /* Check for valid position. */
- if (row < 0) /* window without text lines? */
- row = 0;
- if (row >= screen_Rows)
- row = screen_Rows - 1;
- if (col >= screen_Columns)
- col = screen_Columns - 1;
-
- /* check if no cursor movement is allowed in highlight mode */
- if (screen_attr && *T_MS == NUL)
- noinvcurs = HIGHL_COST;
- else
- noinvcurs = 0;
- goto_cost = GOTO_COST + noinvcurs;
-
- /*
- * Plan how to do the positioning:
- * 1. Use CR to move it to column 0, same row.
- * 2. Use T_LE to move it a few columns to the left.
- * 3. Use NL to move a few lines down, column 0.
- * 4. Move a few columns to the right with T_ND or by writing chars.
- *
- * Don't do this if the cursor went beyond the last column, the cursor
- * position is unknown then (some terminals wrap, some don't )
- *
- * First check if the highlighting attibutes allow us to write
- * characters to move the cursor to the right.
- */
- if (row >= screen_cur_row && screen_cur_col < Columns)
- {
- /*
- * If the cursor is in the same row, bigger col, we can use CR
- * or T_LE.
- */
- bs = NULL; /* init for GCC */
- attr = screen_attr;
- if (row == screen_cur_row && col < screen_cur_col)
- {
- /* "le" is preferred over "bc", because "bc" is obsolete */
- if (*T_LE)
- bs = T_LE; /* "cursor left" */
- else
- bs = T_BC; /* "backspace character (old) */
- if (*bs)
- cost = (screen_cur_col - col) * (int)STRLEN(bs);
- else
- cost = 999;
- if (col + 1 < cost) /* using CR is less characters */
- {
- plan = PLAN_CR;
- wouldbe_col = 0;
- cost = 1; /* CR is just one character */
- }
- else
- {
- plan = PLAN_LE;
- wouldbe_col = col;
- }
- if (noinvcurs) /* will stop highlighting */
- {
- cost += noinvcurs;
- attr = 0;
- }
- }
-
- /*
- * If the cursor is above where we want to be, we can use CR LF.
- */
- else if (row > screen_cur_row)
- {
- plan = PLAN_NL;
- wouldbe_col = 0;
- cost = (row - screen_cur_row) * 2; /* CR LF */
- if (noinvcurs) /* will stop highlighting */
- {
- cost += noinvcurs;
- attr = 0;
- }
- }
-
- /*
- * If the cursor is in the same row, smaller col, just use write.
- */
- else
- {
- plan = PLAN_WRITE;
- wouldbe_col = screen_cur_col;
- cost = 0;
- }
-
- /*
- * Check if any characters that need to be written have the
- * correct attributes. Also avoid UTF-8 characters.
- */
- i = col - wouldbe_col;
- if (i > 0)
- cost += i;
- if (cost < goto_cost && i > 0)
- {
- /*
- * Check if the attributes are correct without additionally
- * stopping highlighting.
- */
- p = ScreenAttrs + LineOffset[row] + wouldbe_col;
- while (i && *p++ == attr)
- --i;
- if (i != 0)
- {
- /*
- * Try if it works when highlighting is stopped here.
- */
- if (*--p == 0)
- {
- cost += noinvcurs;
- while (i && *p++ == 0)
- --i;
- }
- if (i != 0)
- cost = 999; /* different attributes, don't do it */
- }
- #ifdef FEAT_MBYTE
- if (enc_utf8)
- {
- /* Don't use an UTF-8 char for positioning, it's slow. */
- i = col - wouldbe_col;
- p = ScreenLines + LineOffset[row] + wouldbe_col;
- while (i && MB_BYTE2LEN(*p++) == 1)
- --i;
- if (i != 0)
- cost = 999;
- }
- #endif
- }
-
- /*
- * We can do it without term_windgoto()!
- */
- if (cost < goto_cost)
- {
- if (plan == PLAN_LE)
- {
- if (noinvcurs)
- screen_stop_highlight();
- while (screen_cur_col > col)
- {
- out_str(bs);
- --screen_cur_col;
- }
- }
- else if (plan == PLAN_CR)
- {
- if (noinvcurs)
- screen_stop_highlight();
- out_char('\r');
- screen_cur_col = 0;
- }
- else if (plan == PLAN_NL)
- {
- if (noinvcurs)
- screen_stop_highlight();
- while (screen_cur_row < row)
- {
- out_char('\n');
- ++screen_cur_row;
- }
- screen_cur_col = 0;
- }
-
- i = col - screen_cur_col;
- if (i > 0)
- {
- /*
- * Use cursor-right if it's one character only. Avoids
- * removing a line of pixels from the last bold char, when
- * using the bold trick in the GUI.
- */
- if (T_ND[0] != NUL && T_ND[1] == NUL)
- {
- while (i-- > 0)
- out_char(*T_ND);
- }
- else
- {
- int off;
-
- off = LineOffset[row] + screen_cur_col;
- while (i-- > 0)
- {
- if (ScreenAttrs[off] != screen_attr)
- screen_stop_highlight();
- #ifdef FEAT_MBYTE
- out_flush_check();
- #endif
- out_char(ScreenLines[off]);
- #ifdef FEAT_MBYTE
- if (enc_dbcs == DBCS_JPNU
- && ScreenLines[off] == 0x8e)
- out_char(ScreenLines2[off]);
- #endif
- ++off;
- }
- }
- }
- }
- }
- else
- cost = 999;
-
- if (cost >= goto_cost)
- {
- if (noinvcurs)
- screen_stop_highlight();
- if (row == screen_cur_row && (col > screen_cur_col) &&
- *T_CRI != NUL)
- term_cursor_right(col - screen_cur_col);
- else
- term_windgoto(row, col);
- }
- screen_cur_row = row;
- screen_cur_col = col;
- }
- }
-
- /*
- * Set cursor to its position in the current window.
- */
- void
- setcursor()
- {
- if (redrawing())
- {
- validate_cursor();
- windgoto(W_WINROW(curwin) + curwin->w_wrow,
- W_WINCOL(curwin) + (
- #ifdef FEAT_RIGHTLEFT
- curwin->w_p_rl ? ((int)W_WIDTH(curwin) - curwin->w_wcol - (
- # ifdef FEAT_MBYTE
- has_mbyte ? (*mb_ptr2cells)(ml_get_cursor()) :
- # endif
- 1)) :
- #endif
- curwin->w_wcol));
- }
- }
-
-
- /*
- * insert 'line_count' lines at 'row' in window 'wp'
- * if 'invalid' is TRUE the wp->w_lines[].wl_lnum is invalidated.
- * if 'mayclear' is TRUE the screen will be cleared if it is faster than
- * scrolling.
- * Returns FAIL if the lines are not inserted, OK for success.
- */
- int
- win_ins_lines(wp, row, line_count, invalid, mayclear)
- win_T *wp;
- int row;
- int line_count;
- int invalid;
- int mayclear;
- {
- int did_delete;
- int nextrow;
- int lastrow;
- int retval;
-
- if (invalid)
- wp->w_lines_valid = 0;
-
- if (wp->w_height < 5)
- return FAIL;
-
- if (line_count > wp->w_height - row)
- line_count = wp->w_height - row;
-
- retval = win_do_lines(wp, row, line_count, mayclear, FALSE);
- if (retval != MAYBE)
- return retval;
-
- /*
- * If there is a next window or a status line, we first try to delete the
- * lines at the bottom to avoid messing what is after the window.
- * If this fails and there are following windows, don't do anything to avoid
- * messing up those windows, better just redraw.
- */
- did_delete = FALSE;
- #ifdef FEAT_WINDOWS
- if (wp->w_next != NULL || wp->w_status_height)
- {
- if (screen_del_lines(0, W_WINROW(wp) + wp->w_height - line_count,
- line_count, (int)Rows, FALSE, NULL) == OK)
- did_delete = TRUE;
- else if (wp->w_next)
- return FAIL;
- }
- #endif
- /*
- * if no lines deleted, blank the lines that will end up below the window
- */
- if (!did_delete)
- {
- #ifdef FEAT_WINDOWS
- wp->w_redr_status = TRUE;
- #endif
- redraw_cmdline = TRUE;
- nextrow = W_WINROW(wp) + wp->w_height + W_STATUS_HEIGHT(wp);
- lastrow = nextrow + line_count;
- if (lastrow > Rows)
- lastrow = Rows;
- screen_fill(nextrow - line_count, lastrow - line_count,
- W_WINCOL(wp), (int)W_ENDCOL(wp),
- ' ', ' ', 0);
- }
-
- if (screen_ins_lines(0, W_WINROW(wp) + row, line_count, (int)Rows, NULL)
- == FAIL)
- {
- /* deletion will have messed up other windows */
- if (did_delete)
- {
- #ifdef FEAT_WINDOWS
- wp->w_redr_status = TRUE;
- #endif
- win_rest_invalid(W_NEXT(wp));
- }
- return FAIL;
- }
-
- return OK;
- }
-
- /*
- * delete "line_count" window lines at "row" in window "wp"
- * If "invalid" is TRUE curwin->w_lines[] is invalidated.
- * If "mayclear" is TRUE the screen will be cleared if it is faster than
- * scrolling
- * Return OK for success, FAIL if the lines are not deleted.
- */
- int
- win_del_lines(wp, row, line_count, invalid, mayclear)
- win_T *wp;
- int row;
- int line_count;
- int invalid;
- int mayclear;
- {
- int retval;
-
- if (invalid)
- wp->w_lines_valid = 0;
-
- if (line_count > wp->w_height - row)
- line_count = wp->w_height - row;
-
- retval = win_do_lines(wp, row, line_count, mayclear, TRUE);
- if (retval != MAYBE)
- return retval;
-
- if (screen_del_lines(0, W_WINROW(wp) + row, line_count,
- (int)Rows, FALSE, NULL) == FAIL)
- return FAIL;
-
- #ifdef FEAT_WINDOWS
- /*
- * If there are windows or status lines below, try to put them at the
- * correct place. If we can't do that, they have to be redrawn.
- */
- if (wp->w_next || wp->w_status_height || cmdline_row < Rows - 1)
- {
- if (screen_ins_lines(0, W_WINROW(wp) + wp->w_height - line_count,
- line_count, (int)Rows, NULL) == FAIL)
- {
- wp->w_redr_status = TRUE;
- win_rest_invalid(wp->w_next);
- }
- }
- /*
- * If this is the last window and there is no status line, redraw the
- * command line later.
- */
- else
- #endif
- redraw_cmdline = TRUE;
- return OK;
- }
-
- /*
- * Common code for win_ins_lines() and win_del_lines().
- * Returns OK or FAIL when the work has been done.
- * Returns MAYBE when not finished yet.
- */
- static int
- win_do_lines(wp, row, line_count, mayclear, del)
- win_T *wp;
- int row;
- int line_count;
- int mayclear;
- int del;
- {
- int retval;
-
- if (!redrawing() || line_count <= 0)
- return FAIL;
-
- /* only a few lines left: redraw is faster */
- if (mayclear && Rows - line_count < 5
- #ifdef FEAT_VERTSPLIT
- && wp->w_width == Columns
- #endif
- )
- {
- screenclear(); /* will set wp->w_lines_valid to 0 */
- return FAIL;
- }
-
- /*
- * Delete all remaining lines
- */
- if (row + line_count >= wp->w_height)
- {
- screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + wp->w_height,
- W_WINCOL(wp), (int)W_ENDCOL(wp),
- ' ', ' ', 0);
- return OK;
- }
-
- /*
- * when scrolling, the message on the command line should be cleared,
- * otherwise it will stay there forever.
- */
- clear_cmdline = TRUE;
-
- /*
- * If the terminal can set a scroll region, use that.
- * Always do this in a vertically split window. This will redraw from
- * ScreenLines[] when t_CV isn't defined. That's faster than using
- * win_line().
- * Don't use a scroll region when we are going to redraw the text, writing
- * a character in the lower right corner of the scroll region causes a
- * scroll-up in the DJGPP version.
- */
- if (scroll_region
- #ifdef FEAT_VERTSPLIT
- || W_WIDTH(wp) != Columns
- #endif
- )
- {
- #ifdef FEAT_VERTSPLIT
- if (scroll_region && (wp->w_width == Columns || *T_CSV != NUL))
- #endif
- scroll_region_set(wp, row);
- if (del)
- retval = screen_del_lines(W_WINROW(wp) + row, 0, line_count,
- wp->w_height - row, FALSE, wp);
- else
- retval = screen_ins_lines(W_WINROW(wp) + row, 0, line_count,
- wp->w_height - row, wp);
- #ifdef FEAT_VERTSPLIT
- if (scroll_region && (wp->w_width == Columns || *T_CSV != NUL))
- #endif
- scroll_region_reset();
- return retval;
- }
-
- #ifdef FEAT_WINDOWS
- if (wp->w_next != NULL && p_tf) /* don't delete/insert on fast terminal */
- return FAIL;
- #endif
-
- return MAYBE;
- }
-
- /*
- * window 'wp' and everything after it is messed up, mark it for redraw
- */
- static void
- win_rest_invalid(wp)
- win_T *wp;
- {
- #ifdef FEAT_WINDOWS
- while (wp != NULL)
- #else
- if (wp != NULL)
- #endif
- {
- redraw_win_later(wp, NOT_VALID);
- #ifdef FEAT_WINDOWS
- wp->w_redr_status = TRUE;
- wp = wp->w_next;
- #endif
- }
- redraw_cmdline = TRUE;
- }
-
- /*
- * The rest of the routines in this file perform screen manipulations. The
- * given operation is performed physically on the screen. The corresponding
- * change is also made to the internal screen image. In this way, the editor
- * anticipates the effect of editing changes on the appearance of the screen.
- * That way, when we call screenupdate a complete redraw isn't usually
- * necessary. Another advantage is that we can keep adding code to anticipate
- * screen changes, and in the meantime, everything still works.
- */
-
- /*
- * types for inserting or deleting lines
- */
- #define USE_T_CAL 1
- #define USE_T_CDL 2
- #define USE_T_AL 3
- #define USE_T_CE 4
- #define USE_T_DL 5
- #define USE_T_SR 6
- #define USE_NL 7
- #define USE_T_CD 8
- #define USE_REDRAW 9
-
- /*
- * insert lines on the screen and update ScreenLines[]
- * 'end' is the line after the scrolled part. Normally it is Rows.
- * When scrolling region used 'off' is the offset from the top for the region.
- * 'row' and 'end' are relative to the start of the region.
- *
- * return FAIL for failure, OK for success.
- */
- static int
- screen_ins_lines(off, row, line_count, end, wp)
- int off;
- int row;
- int line_count;
- int end;
- win_T *wp; /* NULL or window to use width from */
- {
- int i;
- int j;
- unsigned temp;
- int cursor_row;
- int type;
- int result_empty;
- int can_ce = can_clear(T_CE);
-
- /*
- * FAIL if
- * - there is no valid screen
- * - the screen has to be redrawn completely
- * - the line count is less than one
- * - the line count is more than 'ttyscroll'
- */
- if (!screen_valid(TRUE) || line_count <= 0 || line_count > p_ttyscroll)
- return FAIL;
-
- /*
- * There are seven ways to insert lines:
- * 0. When in a vertically split window and t_CV isn't set, redraw the
- * characters from ScreenLines[].
- * 1. Use T_CD (clear to end of display) if it exists and the result of
- * the insert is just empty lines
- * 2. Use T_CAL (insert multiple lines) if it exists and T_AL is not
- * present or line_count > 1. It looks better if we do all the inserts
- * at once.
- * 3. Use T_CDL (delete multiple lines) if it exists and the result of the
- * insert is just empty lines and T_CE is not present or line_count >
- * 1.
- * 4. Use T_AL (insert line) if it exists.
- * 5. Use T_CE (erase line) if it exists and the result of the insert is
- * just empty lines.
- * 6. Use T_DL (delete line) if it exists and the result of the insert is
- * just empty lines.
- * 7. Use T_SR (scroll reverse) if it exists and inserting at row 0 and
- * the 'da' flag is not set or we have clear line capability.
- * 8. redraw the characters from ScreenLines[].
- *
- * Careful: In a hpterm scroll reverse doesn't work as expected, it moves
- * the scrollbar for the window. It does have insert line, use that if it
- * exists.
- */
- result_empty = (row + line_count >= end);
- #ifdef FEAT_VERTSPLIT
- if (wp != NULL && wp->w_width != Columns && *T_CSV == NUL)
- type = USE_REDRAW;
- else
- #endif
- if (can_clear(T_CD) && result_empty)
- type = USE_T_CD;
- else if (*T_CAL != NUL && (line_count > 1 || *T_AL == NUL))
- type = USE_T_CAL;
- else if (*T_CDL != NUL && result_empty && (line_count > 1 || !can_ce))
- type = USE_T_CDL;
- else if (*T_AL != NUL)
- type = USE_T_AL;
- else if (can_ce && result_empty)
- type = USE_T_CE;
- else if (*T_DL != NUL && result_empty)
- type = USE_T_DL;
- else if (*T_SR != NUL && row == 0 && (*T_DA == NUL || can_ce))
- type = USE_T_SR;
- else
- return FAIL;
-
- /*
- * For clearing the lines screen_del_lines() is used. This will also take
- * care of t_db if necessary.
- */
- if (type == USE_T_CD || type == USE_T_CDL ||
- type == USE_T_CE || type == USE_T_DL)
- return screen_del_lines(off, row, line_count, end, FALSE, wp);
-
- /*
- * If text is retained below the screen, first clear or delete as many
- * lines at the bottom of the window as are about to be inserted so that
- * the deleted lines won't later surface during a screen_del_lines.
- */
- if (*T_DB)
- screen_del_lines(off, end - line_count, line_count, end, FALSE, wp);
-
- #ifdef FEAT_CLIPBOARD
- /* Remove a modeless selection when inserting lines halfway the screen
- * or not the full width of the screen. */
- if (off + row > 0
- # ifdef FEAT_VERTSPLIT
- || (wp != NULL && wp->w_width != Columns)
- # endif
- )
- clip_clear_selection();
- else
- clip_scroll_selection(-line_count);
- #endif
-
- #ifdef FEAT_GUI_BEOS
- vim_lock_screen();
- #endif
- #ifdef FEAT_GUI
- /* Don't update the GUI cursor here, ScreenLines[] is invalid until the
- * scrolling is actually carried out. */
- gui_dont_update_cursor();
- #endif
-
- if (*T_CCS != NUL) /* cursor relative to region */
- cursor_row = row;
- else
- cursor_row = row + off;
-
- /*
- * Shift LineOffset[] line_count down to reflect the inserted lines.
- * Clear the inserted lines in ScreenLines[].
- */
- row += off;
- end += off;
- for (i = 0; i < line_count; ++i)
- {
- #ifdef FEAT_VERTSPLIT
- if (wp != NULL && wp->w_width != Columns)
- {
- /* need to copy part of a line */
- j = end - 1 - i;
- while ((j -= line_count) >= row)
- linecopy(j + line_count, j, wp);
- j += line_count;
- if (can_clear((char_u *)" "))
- lineclear(LineOffset[j] + wp->w_wincol, wp->w_width);
- else
- lineinvalid(LineOffset[j] + wp->w_wincol, wp->w_width);
- }
- else
- #endif
- {
- j = end - 1 - i;
- temp = LineOffset[j];
- while ((j -= line_count) >= row)
- LineOffset[j + line_count] = LineOffset[j];
- LineOffset[j + line_count] = temp;
- if (can_clear((char_u *)" "))
- lineclear(temp, (int)Columns);
- else
- lineinvalid(temp, (int)Columns);
- }
- }
- #ifdef FEAT_GUI_BEOS
- vim_unlock_screen();
- #endif
-
- screen_stop_highlight();
- windgoto(cursor_row, 0);
-
- #ifdef FEAT_VERTSPLIT
- /* redraw the characters */
- if (type == USE_REDRAW)
- redraw_block(row, end, wp);
- else
- #endif
- if (type == USE_T_CAL)
- {
- term_append_lines(line_count);
- screen_start(); /* don't know where cursor is now */
- }
- else
- {
- for (i = 0; i < line_count; i++)
- {
- if (type == USE_T_AL)
- {
- if (i && cursor_row != 0)
- windgoto(cursor_row, 0);
- out_str(T_AL);
- }
- else /* type == USE_T_SR */
- out_str(T_SR);
- screen_start(); /* don't know where cursor is now */
- }
- }
-
- /*
- * With scroll-reverse and 'da' flag set we need to clear the lines that
- * have been scrolled down into the region.
- */
- if (type == USE_T_SR && *T_DA)
- {
- for (i = 0; i < line_count; ++i)
- {
- windgoto(off + i, 0);
- out_str(T_CE);
- screen_start(); /* don't know where cursor is now */
- }
- }
-
- #ifdef FEAT_GUI
- gui_can_update_cursor();
- if (gui.in_use)
- out_flush(); /* always flush after a scroll */
- #endif
- return OK;
- }
-
- /*
- * delete lines on the screen and update ScreenLines[]
- * 'end' is the line after the scrolled part. Normally it is Rows.
- * When scrolling region used 'off' is the offset from the top for the region.
- * 'row' and 'end' are relative to the start of the region.
- *
- * Return OK for success, FAIL if the lines are not deleted.
- */
- /*ARGSUSED*/
- int
- screen_del_lines(off, row, line_count, end, force, wp)
- int off;
- int row;
- int line_count;
- int end;
- int force; /* even when line_count > p_ttyscroll */
- win_T *wp; /* NULL or window to use width from */
- {
- int j;
- int i;
- unsigned temp;
- int cursor_row;
- int cursor_end;
- int result_empty; /* result is empty until end of region */
- int can_delete; /* deleting line codes can be used */
- int type;
-
- /*
- * FAIL if
- * - there is no valid screen
- * - the screen has to be redrawn completely
- * - the line count is less than one
- * - the line count is more than 'ttyscroll'
- */
- if (!screen_valid(TRUE) || line_count <= 0 ||
- (!force && line_count > p_ttyscroll))
- return FAIL;
-
- /*
- * Check if the rest of the current region will become empty.
- */
- result_empty = row + line_count >= end;
-
- /*
- * We can delete lines only when 'db' flag not set or when 'ce' option
- * available.
- */
- can_delete = (*T_DB == NUL || can_clear(T_CE));
-
- /*
- * There are six ways to delete lines:
- * 0. When in a vertically split window and t_CV isn't set, redraw the
- * characters from ScreenLines[].
- * 1. Use T_CD if it exists and the result is empty.
- * 2. Use newlines if row == 0 and count == 1 or T_CDL does not exist.
- * 3. Use T_CDL (delete multiple lines) if it exists and line_count > 1 or
- * none of the other ways work.
- * 4. Use T_CE (erase line) if the result is empty.
- * 5. Use T_DL (delete line) if it exists.
- * 6. redraw the characters from ScreenLines[].
- */
- #ifdef FEAT_VERTSPLIT
- if (wp != NULL && wp->w_width != Columns && *T_CSV == NUL)
- type = USE_REDRAW;
- else
- #endif
- if (can_clear(T_CD) && result_empty)
- type = USE_T_CD;
- #if defined(__BEOS__) && defined(BEOS_DR8)
- /*
- * USE_NL does not seem to work in Terminal of DR8 so we set T_DB="" in
- * its internal termcap... this works okay for tests which test *T_DB !=
- * NUL. It has the disadvantage that the user cannot use any :set t_*
- * command to get T_DB (back) to empty_option, only :set term=... will do
- * the trick...
- * Anyway, this hack will hopefully go away with the next OS release.
- * (Olaf Seibert)
- */
- else if (row == 0 && T_DB == empty_option
- && (line_count == 1 || *T_CDL == NUL))
- #else
- else if (row == 0 && (
- #ifndef AMIGA
- /* On the Amiga, somehow '\n' on the last line doesn't always scroll
- * up, so use delete-line command */
- line_count == 1 ||
- #endif
- *T_CDL == NUL))
- #endif
- type = USE_NL;
- else if (*T_CDL != NUL && line_count > 1 && can_delete)
- type = USE_T_CDL;
- else if (can_clear(T_CE) && result_empty
- #ifdef FEAT_VERTSPLIT
- && (wp == NULL || wp->w_width == Columns)
- #endif
- )
- type = USE_T_CE;
- else if (*T_DL != NUL && can_delete)
- type = USE_T_DL;
- else if (*T_CDL != NUL && can_delete)
- type = USE_T_CDL;
- else
- return FAIL;
-
- #ifdef FEAT_CLIPBOARD
- /* Remove a modeless selection when deleting lines halfway the screen or
- * not the full width of the screen. */
- if (off + row > 0
- # ifdef FEAT_VERTSPLIT
- || (wp != NULL && wp->w_width != Columns)
- # endif
- )
- clip_clear_selection();
- else
- clip_scroll_selection(line_count);
- #endif
-
- #ifdef FEAT_GUI_BEOS
- vim_lock_screen();
- #endif
- #ifdef FEAT_GUI
- /* Don't update the GUI cursor here, ScreenLines[] is invalid until the
- * scrolling is actually carried out. */
- gui_dont_update_cursor();
- #endif
-
- if (*T_CCS != NUL) /* cursor relative to region */
- {
- cursor_row = row;
- cursor_end = end;
- }
- else
- {
- cursor_row = row + off;
- cursor_end = end + off;
- }
-
- /*
- * Now shift LineOffset[] line_count up to reflect the deleted lines.
- * Clear the inserted lines in ScreenLines[].
- */
- row += off;
- end += off;
- for (i = 0; i < line_count; ++i)
- {
- #ifdef FEAT_VERTSPLIT
- if (wp != NULL && wp->w_width != Columns)
- {
- /* need to copy part of a line */
- j = row + i;
- while ((j += line_count) <= end - 1)
- linecopy(j - line_count, j, wp);
- j -= line_count;
- if (can_clear((char_u *)" "))
- lineclear(LineOffset[j] + wp->w_wincol, wp->w_width);
- else
- lineinvalid(LineOffset[j] + wp->w_wincol, wp->w_width);
- }
- else
- #endif
- {
- /* whole width, moving the line pointers is faster */
- j = row + i;
- temp = LineOffset[j];
- while ((j += line_count) <= end - 1)
- LineOffset[j - line_count] = LineOffset[j];
- LineOffset[j - line_count] = temp;
- if (can_clear((char_u *)" "))
- lineclear(temp, (int)Columns);
- else
- lineinvalid(temp, (int)Columns);
- }
- }
- #ifdef FEAT_GUI_BEOS
- vim_unlock_screen();
- #endif
-
- screen_stop_highlight();
-
- #ifdef FEAT_VERTSPLIT
- /* redraw the characters */
- if (type == USE_REDRAW)
- redraw_block(row, end, wp);
- else
- #endif
- if (type == USE_T_CD) /* delete the lines */
- {
- windgoto(cursor_row, 0);
- out_str(T_CD);
- screen_start(); /* don't know where cursor is now */
- }
- else if (type == USE_T_CDL)
- {
- windgoto(cursor_row, 0);
- term_delete_lines(line_count);
- screen_start(); /* don't know where cursor is now */
- }
- /*
- * Deleting lines at top of the screen or scroll region: Just scroll
- * the whole screen (scroll region) up by outputting newlines on the
- * last line.
- */
- else if (type == USE_NL)
- {
- windgoto(cursor_end - 1, 0);
- for (i = line_count; --i >= 0; )
- out_char('\n'); /* cursor will remain on same line */
- }
- else
- {
- for (i = line_count; --i >= 0; )
- {
- if (type == USE_T_DL)
- {
- windgoto(cursor_row, 0);
- out_str(T_DL); /* delete a line */
- }
- else /* type == USE_T_CE */
- {
- windgoto(cursor_row + i, 0);
- out_str(T_CE); /* erase a line */
- }
- screen_start(); /* don't know where cursor is now */
- }
- }
-
- /*
- * If the 'db' flag is set, we need to clear the lines that have been
- * scrolled up at the bottom of the region.
- */
- if (*T_DB && (type == USE_T_DL || type == USE_T_CDL))
- {
- for (i = line_count; i > 0; --i)
- {
- windgoto(cursor_end - i, 0);
- out_str(T_CE); /* erase a line */
- screen_start(); /* don't know where cursor is now */
- }
- }
-
- #ifdef FEAT_GUI
- gui_can_update_cursor();
- if (gui.in_use)
- out_flush(); /* always flush after a scroll */
- #endif
-
- return OK;
- }
-
- /*
- * show the current mode and ruler
- *
- * If clear_cmdline is TRUE, clear the rest of the cmdline.
- * If clear_cmdline is FALSE there may be a message there that needs to be
- * cleared only if a mode is shown.
- * Return the length of the message (0 if no message).
- */
- int
- showmode()
- {
- int need_clear;
- int length = 0;
- int do_mode;
- int attr;
- int nwr_save;
- #ifdef FEAT_INS_EXPAND
- int sub_attr;
- #endif
-
- do_mode = (p_smd && ((State & INSERT) || restart_edit
- #ifdef FEAT_VISUAL
- || VIsual_active
- #endif
- ));
- if (do_mode || Recording)
- {
- /*
- * Don't show mode right now, when not redrawing or inside a mapping.
- * Call char_avail() only when we are going to show something, because
- * it takes a bit of time.
- */
- if (!redrawing() || (char_avail() && !KeyTyped))
- {
- redraw_cmdline = TRUE; /* show mode later */
- return 0;
- }
-
- nwr_save = need_wait_return;
-
- /* wait a bit before overwriting an important message */
- check_for_delay(FALSE);
-
- /* if the cmdline is more than one line high, erase top lines */
- need_clear = clear_cmdline;
- if (clear_cmdline && cmdline_row < Rows - 1)
- msg_clr_cmdline(); /* will reset clear_cmdline */
-
- /* Position on the last line in the window, column 0 */
- msg_pos_mode();
- cursor_off();
- attr = hl_attr(HLF_CM); /* Highlight mode */
- if (do_mode)
- {
- MSG_PUTS_ATTR("--", attr);
- #if defined(FEAT_XIM)
- if (xic != NULL && im_get_status() && !p_imdisable
- && curbuf->b_p_iminsert == B_IMODE_IM)
- MSG_PUTS_ATTR(" XIM", attr);
- #endif
- #if defined(FEAT_HANGULIN) && defined(FEAT_GUI)
- if (gui.in_use)
- {
- if (hangul_input_state_get())
- MSG_PUTS_ATTR(" ÇѱÛ", attr); /* HANGUL */
- }
- #endif
- #ifdef FEAT_INS_EXPAND
- if (edit_submode != NULL) /* CTRL-X in Insert mode */
- {
- /* These messages can get long, avoid a wrap in a narrow
- * window. Prefer showing edit_submode_extra. */
- length = (Rows - msg_row) * Columns - 3;
- if (edit_submode_extra != NULL)
- length -= vim_strsize(edit_submode_extra);
- if (length > 0)
- {
- if (edit_submode_pre != NULL)
- length -= vim_strsize(edit_submode_pre);
- if (length - vim_strsize(edit_submode) > 0)
- {
- if (edit_submode_pre != NULL)
- msg_puts_attr(edit_submode_pre, attr);
- msg_puts_attr(edit_submode, attr);
- }
- if (edit_submode_extra != NULL)
- {
- MSG_PUTS_ATTR(" ", attr); /* add a space in between */
- if ((int)edit_submode_highl < (int)HLF_COUNT)
- sub_attr = hl_attr(edit_submode_highl);
- else
- sub_attr = attr;
- msg_puts_attr(edit_submode_extra, sub_attr);
- }
- }
- length = 0;
- }
- else
- #endif
- {
- #ifdef FEAT_VREPLACE
- if (State & VREPLACE_FLAG)
- MSG_PUTS_ATTR(_(" VREPLACE"), attr);
- else
- #endif
- if (State & REPLACE_FLAG)
- MSG_PUTS_ATTR(_(" REPLACE"), attr);
- else if (State & INSERT)
- {
- #ifdef FEAT_RIGHTLEFT
- if (p_ri)
- MSG_PUTS_ATTR(_(" REVERSE"), attr);
- #endif
- MSG_PUTS_ATTR(_(" INSERT"), attr);
- }
- else if (restart_edit == 'I')
- MSG_PUTS_ATTR(_(" (insert)"), attr);
- else if (restart_edit == 'R')
- MSG_PUTS_ATTR(_(" (replace)"), attr);
- else if (restart_edit == 'V')
- MSG_PUTS_ATTR(_(" (vreplace)"), attr);
- #ifdef FEAT_RIGHTLEFT
- if (p_hkmap)
- MSG_PUTS_ATTR(_(" Hebrew"), attr);
- # ifdef FEAT_FKMAP
- if (p_fkmap)
- MSG_PUTS_ATTR(farsi_text_5, attr);
- # endif
- #endif
- #ifdef FEAT_KEYMAP
- if (State & LANGMAP)
- MSG_PUTS_ATTR(_(" (lang)"), attr);
- #endif
- if ((State & INSERT) && p_paste)
- MSG_PUTS_ATTR(_(" (paste)"), attr);
-
- #ifdef FEAT_VISUAL
- if (VIsual_active)
- {
- if (VIsual_select)
- MSG_PUTS_ATTR(_(" SELECT"), attr);
- else
- MSG_PUTS_ATTR(_(" VISUAL"), attr);
- if (VIsual_mode == Ctrl_V)
- MSG_PUTS_ATTR(_(" BLOCK"), attr);
- else if (VIsual_mode == 'V')
- MSG_PUTS_ATTR(_(" LINE"), attr);
- }
- #endif
- MSG_PUTS_ATTR(" --", attr);
- }
- need_clear = TRUE;
- }
- if (Recording
- #ifdef FEAT_INS_EXPAND
- && edit_submode == NULL /* otherwise it gets too long */
- #endif
- )
- {
- MSG_PUTS_ATTR(_("recording"), attr);
- need_clear = TRUE;
- }
- if (need_clear || clear_cmdline)
- msg_clr_eos();
- msg_didout = FALSE; /* overwrite this message */
- length = msg_col;
- msg_col = 0;
- need_wait_return = nwr_save; /* never ask for hit-return for this */
- }
- else if (clear_cmdline) /* just clear anything */
- msg_clr_cmdline(); /* will reset clear_cmdline */
-
- #ifdef FEAT_CMDL_INFO
- /* If the last window has no status line, the ruler is after the mode
- * message and must be redrawn */
- # ifdef FEAT_WINDOWS
- if (lastwin->w_status_height == 0)
- # endif
- win_redr_ruler(lastwin, TRUE);
- #endif
- redraw_cmdline = FALSE;
- clear_cmdline = FALSE;
-
- return length;
- }
-
- /*
- * Position for a mode message.
- */
- static void
- msg_pos_mode()
- {
- msg_col = 0;
- msg_row = Rows - 1;
- }
-
- /*
- * Delete mode message. Used when ESC is typed which is expected to end
- * Insert mode (but Insert mode didn't end yet!).
- */
- void
- unshowmode(force)
- int force;
- {
- /*
- * Don't delete it right now, when not redrawing or insided a mapping.
- */
- if (!redrawing() || (!force && char_avail() && !KeyTyped))
- redraw_cmdline = TRUE; /* delete mode later */
- else
- {
- msg_pos_mode();
- if (Recording)
- MSG_PUTS_ATTR(_("recording"), hl_attr(HLF_CM));
- msg_clr_eos();
- }
- }
-
- #if defined(FEAT_WINDOWS) || defined(FEAT_WILDMENU) || defined(FEAT_STL_OPT)
- /*
- * Get the character to use in a status line. Get its attributes in "*attr".
- */
- static int
- fillchar_status(attr, is_curwin)
- int *attr;
- int is_curwin;
- {
- int fill;
- if (is_curwin)
- {
- *attr = hl_attr(HLF_S);
- fill = fill_stl;
- }
- else
- {
- *attr = hl_attr(HLF_SNC);
- fill = fill_stlnc;
- }
- /* Use fill when there is highlighting, and highlighting of current
- * window differs, or the fillchars differ, or this is not the
- * current window */
- if (*attr != 0 && ((hl_attr(HLF_S) != hl_attr(HLF_SNC)
- || !is_curwin || firstwin == lastwin)
- || (fill_stl != fill_stlnc)))
- return fill;
- if (is_curwin)
- return '^';
- return '=';
- }
- #endif
-
- #ifdef FEAT_VERTSPLIT
- /*
- * Get the character to use in a separator between vertically split windows.
- * Get its attributes in "*attr".
- */
- static int
- fillchar_vsep(attr)
- int *attr;
- {
- *attr = hl_attr(HLF_C);
- if (*attr == 0 && fill_vert == ' ')
- return '|';
- else
- return fill_vert;
- }
- #endif
-
- /*
- * Return TRUE if redrawing should currently be done.
- */
- int
- redrawing()
- {
- return (!RedrawingDisabled && !(p_lz && char_avail() && !KeyTyped));
- }
-
- /*
- * Return TRUE if printing messages should currently be done.
- */
- int
- messaging()
- {
- return (!(p_lz && char_avail() && !KeyTyped));
- }
-
- /*
- * Show current status info in ruler and various other places
- * If always is FALSE, only show ruler if position has changed.
- */
- void
- showruler(always)
- int always;
- {
- if (!always && !redrawing())
- return;
- #if defined(FEAT_STL_OPT) && defined(FEAT_WINDOWS)
- if (*p_stl && curwin->w_status_height)
- win_redr_custom(curwin, FALSE);
- else
- #endif
- #ifdef FEAT_CMDL_INFO
- win_redr_ruler(curwin, always);
- #endif
-
- #ifdef FEAT_TITLE
- if (need_maketitle
- # ifdef FEAT_STL_OPT
- || (p_icon && (stl_syntax & STL_IN_ICON))
- || (p_title && (stl_syntax & STL_IN_TITLE))
- # endif
- )
- maketitle();
- #endif
- }
-
- #ifdef FEAT_CMDL_INFO
- static void
- win_redr_ruler(wp, always)
- win_T *wp;
- int always;
- {
- char_u buffer[70];
- int row;
- int fillchar;
- int attr;
- int empty_line = FALSE;
- colnr_T virtcol;
- int i;
- int o;
- #ifdef FEAT_VERTSPLIT
- int this_ru_col;
- int off = 0;
- int width = Columns;
- # define WITH_OFF(x) x
- # define WITH_WIDTH(x) x
- #else
- # define WITH_OFF(x) 0
- # define WITH_WIDTH(x) Columns
- # define this_ru_col ru_col
- #endif
-
- /* If 'ruler' off or redrawing disabled, don't do anything */
- if (!p_ru)
- return;
-
- /*
- * Check if cursor.lnum is valid, since win_redr_ruler() may be called
- * after deleting lines, before cursor.lnum is corrected.
- */
- if (wp->w_cursor.lnum > wp->w_buffer->b_ml.ml_line_count)
- return;
-
- #ifdef FEAT_INS_EXPAND
- /* Don't draw the ruler while doing insert-completion, it might overwrite
- * the (long) mode message. */
- # ifdef FEAT_WINDOWS
- if (wp == lastwin && lastwin->w_status_height == 0)
- # endif
- if (edit_submode != NULL)
- return;
- #endif
-
- #ifdef FEAT_STL_OPT
- if (*p_ruf)
- {
- win_redr_custom(wp, TRUE);
- return;
- }
- #endif
-
- /*
- * Check if the line is empty (will show "0-1").
- */
- if (*ml_get_buf(wp->w_buffer, wp->w_cursor.lnum, FALSE) == NUL)
- empty_line = TRUE;
-
- /*
- * Only draw the ruler when something changed.
- */
- validate_virtcol_win(wp);
- if ( redraw_cmdline
- || always
- || wp->w_cursor.lnum != wp->w_ru_cursor.lnum
- || wp->w_cursor.col != wp->w_ru_cursor.col
- || wp->w_virtcol != wp->w_ru_virtcol
- #ifdef FEAT_VIRTUALEDIT
- || wp->w_cursor.coladd != wp->w_ru_cursor.coladd
- #endif
- || wp->w_topline != wp->w_ru_topline
- #ifdef FEAT_DIFF
- || wp->w_topfill != wp->w_ru_topfill
- #endif
- || empty_line != wp->w_ru_empty)
- {
- cursor_off();
- #ifdef FEAT_WINDOWS
- if (wp->w_status_height)
- {
- row = W_WINROW(wp) + wp->w_height;
- fillchar = fillchar_status(&attr, wp == curwin);
- # ifdef FEAT_VERTSPLIT
- off = W_WINCOL(wp);
- width = W_WIDTH(wp);
- # endif
- }
- else
- #endif
- {
- row = Rows - 1;
- fillchar = ' ';
- attr = 0;
- #ifdef FEAT_VERTSPLIT
- width = Columns;
- off = 0;
- #endif
- }
-
- /* In list mode virtcol needs to be recomputed */
- virtcol = wp->w_virtcol;
- if (wp->w_p_list && lcs_tab1 == NUL)
- {
- wp->w_p_list = FALSE;
- getvvcol(wp, &wp->w_cursor, NULL, &virtcol, NULL);
- wp->w_p_list = TRUE;
- }
-
- /*
- * Some sprintfs return the length, some return a pointer.
- * To avoid portability problems we use strlen() here.
- */
- sprintf((char *)buffer, "%ld,",
- (wp->w_buffer->b_ml.ml_flags & ML_EMPTY)
- ? 0L
- : (long)(wp->w_cursor.lnum));
- col_print(buffer + STRLEN(buffer),
- !(State & INSERT) && empty_line
- ? 0
- : (int)wp->w_cursor.col + 1,
- (int)virtcol + 1);
-
- /*
- * Add a "50%" if there is room for it.
- * On the last line, don't print in the last column (scrolls the
- * screen up on some terminals).
- */
- i = (int)STRLEN(buffer);
- get_rel_pos(wp, buffer + i + 1);
- o = (int)STRLEN(buffer + i + 1);
- #ifdef FEAT_WINDOWS
- if (wp->w_status_height == 0) /* can't use last char of screen */
- #endif
- ++o;
- #ifdef FEAT_VERTSPLIT
- this_ru_col = ru_col - (Columns - width);
- if (this_ru_col < 0)
- this_ru_col = 0;
- #endif
- /* Never use more than half the window/screen width, leave the other
- * half for the filename. */
- if (this_ru_col < (WITH_WIDTH(width) + 1) / 2)
- this_ru_col = (WITH_WIDTH(width) + 1) / 2;
- if (this_ru_col + i + o < WITH_WIDTH(width))
- {
- while (this_ru_col + i + o < WITH_WIDTH(width))
- buffer[i++] = fillchar;
- get_rel_pos(wp, buffer + i);
- }
- /* Truncate at window boundary. */
- if (this_ru_col + (int)STRLEN(buffer) > WITH_WIDTH(width))
- buffer[WITH_WIDTH(width) - this_ru_col] = NUL;
-
- screen_puts(buffer, row, this_ru_col + WITH_OFF(off), attr);
- i = redraw_cmdline;
- screen_fill(row, row + 1,
- this_ru_col + WITH_OFF(off) + (int)STRLEN(buffer),
- (int)(WITH_OFF(off) + WITH_WIDTH(width)),
- fillchar, fillchar, attr);
- /* don't redraw the cmdline because of showing the ruler */
- redraw_cmdline = i;
- wp->w_ru_cursor = wp->w_cursor;
- wp->w_ru_virtcol = wp->w_virtcol;
- wp->w_ru_empty = empty_line;
- wp->w_ru_topline = wp->w_topline;
- #ifdef FEAT_DIFF
- wp->w_ru_topfill = wp->w_topfill;
- #endif
- }
- }
- #endif
-