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- /* display.h -- How the display in Info is done. */
-
- /* This file is part of GNU Info, a program for reading online documentation
- stored in Info format.
-
- Copyright (C) 1993 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- Written by Brian Fox (bfox@ai.mit.edu). */
-
- #if !defined (_DISPLAY_H_)
- #define _DISPLAY_H_
-
- #include "info-utils.h"
- #include "terminal.h"
-
- typedef struct {
- char *text; /* Text of the line as it appears. */
- int textlen; /* Printable Length of TEXT. */
- int inverse; /* Non-zero means this line is inverse. */
- } DISPLAY_LINE;
-
- /* An array of display lines which tell us what is currently visible on
- the display. */
- extern DISPLAY_LINE **the_display;
-
- /* Non-zero means do no output. */
- extern int display_inhibited;
-
- /* Non-zero if we didn't completely redisplay a window. */
- extern int display_was_interrupted_p;
-
- /* Initialize THE_DISPLAY to WIDTH and HEIGHT, with nothing in it. */
- extern void display_initialize_display ();
-
- /* Clear all of the lines in DISPLAY making the screen blank. */
- extern void display_clear_display ();
-
- /* Update the windows pointed to by WINDOWS in THE_DISPLAY. This actually
- writes the text on the screen. */
- extern void display_update_display ();
-
- /* Display WIN on THE_DISPLAY. Unlike display_update_display (), this
- function only does one window. */
- extern void display_update_one_window ();
-
- /* Move the screen cursor to directly over the current character in WINDOW. */
- extern void display_cursor_at_point ();
-
- /* Scroll the region of the_display starting at START, ending at END, and
- moving the lines AMOUNT lines. If AMOUNT is less than zero, the lines
- are moved up in the screen, otherwise down. Actually, it is possible
- for no scrolling to take place in the case that the terminal doesn't
- support it. This doesn't matter to us. */
- extern void display_scroll_display ();
-
- /* Try to scroll lines in WINDOW. OLD_PAGETOP is the pagetop of WINDOW before
- having had its line starts recalculated. OLD_STARTS is the list of line
- starts that used to appear in this window. OLD_COUNT is the number of lines
- that appear in the OLD_STARTS array. */
- extern void display_scroll_line_starts ();
-
- #endif /* !_DISPLAY_H_ */
-