Usenet 1994 January/usenetsourcesnewsgroupsinfomagicjanuary1994.iso/sources/x/volume4/xtroff/part16

Internet Message Format | 1989-07-19 | 32.2 KB

Path: uunet!island!argv
From: [e-mail] (Dan Heller)
Newsgroups: comp.sources.x
Subject: v04i061: xtroff -- troff previewer for X11, Part16/18
Message-ID: <[e-mail]>
Date: 19 Jul 89 09:13:51 GMT
Organization: Island Graphics, Marin County, California
Lines: 1204
Approved: island![e-mail]

Submitted-by: Mark Moraes <[e-mail]>
Posting-number: Volume 4, Issue 61
Archive-name: xtroff/part16



#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#        "End of archive 16 (of 18)."
# Contents:  xtroff/XtStuff/Minibuf.c
# Wrapped by [e-mail] on Thu Jul 13 20:55:23 1989
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'xtroff/XtStuff/Minibuf.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'xtroff/XtStuff/Minibuf.c'\"
else
echo shar: Extracting \"'xtroff/XtStuff/Minibuf.c'\" \(29958 characters\)
sed "s/^X//" >'xtroff/XtStuff/Minibuf.c' <<'END_OF_FILE'
X/* $Header: Minibuf.c,v 1.5 89/06/30 03:38:22 moraes Exp $ */
X/*
X *  This file should be edited with 4-column tabs!  (:set ts=4 sw=4 in
X *  vi, set internal-tabstop 4 in Jove, and use edit-tab-stops in Emacs
X *  to get them
X */
X
X/*
X *  This set of routines create and manipulate a simple one-line input
X *  window. They offer a reasonable subset of EMACS like editing
X *  capabilities, Like EMACS, the command-key to action bindings can be
X *  altered. It does no data validation. The minibuffer can be created
X *  using normal Xt calls, with args, and parsing the resources. Other
X *  calls allow strings to be displayed or input or both. (prompted
X *  input). There is no restriction on the length of the input line,
X *  which will horizontally scroll in the window, EMACS-style, by half
X *  the "screen" width.  It can be used in dialog boxes, or as in xpic,
X *  for an interaction line.
X */
X/*
X *  Since this is the first (and only) widget I've written, there are
X *  probably lots of things done wrong. Feel free to fix 'em. This was
X *  written because the Text widgets available are more powerful than I
X *  need, but aren't capable of performing the simple function that this
X *  performs - display a prompt, a default chunk of text, and permit
X *  editing of the default. MOST important, it must invoke some sort of
X *  callback when the user hits RETURN or ^G/^C. As a minor point, I
X *  hate the silly underline ^ cursor that the text widget allows. Give
X *  me a solid blob anyday. It would be nice if someone could hack this
X *  capability into the Text widget - after a bit of digging in its
X *  code, I decided that preserving my sanity (or what's left of it) was
X *  important, and chose to write this - it was much simpler.
X */
X/* Author: Mark Moraes ([e-mail])
X   History: First written for X10 under the X10 tookit, for xpic in
X               August 1987.
X               This version was ported to X11, and then tuned and cleaned
X            up - X11 is so much slower on Suns that the inefficient
X            redisplay strategy used in the X10 version was unfeasible
X            June 1988.
X */
X/* To do:
X    Get it to understand the subtleties of reverse video
X */
X
X#include <strings.h>
X#include <ctype.h>
X#ifdef DEBUG
X#include <stdio.h>
X#endif
X#include <X11/Xlib.h>
X#include <X11/StringDefs.h>
X#include <X11/IntrinsicP.h>
X#include <X11/Intrinsic.h>
X#include <X11/keysymdef.h>
X#include <X11/CoreP.h>
X#include <X11/Core.h>
X#include "MinibufP.h"
X#include "Minibuf.h"
X
X#include "assert.h"
X
X/* To keep references to data less than six miles long */
X#define mbuf(x)            buf->minibuf.x
X#define mcore(x)        buf->core.x
X#define fontwidth(x)    ((x)->max_bounds.width)
X#define fontheight(x)    ((x)->max_bounds.ascent + (x)->max_bounds.descent)
X#define fontbaseline(x)    ((x)->max_bounds.ascent)
X#define CheckMode()        if (mbuf(inputMode) == FALSE) return; else ;
X
X
X/*
X *  This should be larger than the expected filesize - if a XtRealloc
X *  occurs in insert_s(), add_mess(), bad things will happen because the
X *  f_complete routines don't expect the string to change while they're
X *  working - fixing this is work that I don't feel upto right now - one
X *  day....
X */
X#define BUF_BLOCK         128
X
X#define MIN_COLS         5
X#define DEFAULTFONT        "8x13"
X#define ABORT_MSG        "[Aborted]"
X#define DELAY            300000        /*
X                                     *  Microseconds of delay for cursor
X                                     *  flash in SetMark
X                                     */
X
X/* The default bindings */
Xstatic char defaultTranslations[] =
X    "Ctrl<Key>F:        forward-character()\n\
X    <Key>0xff53:        forward-character()\n\
X    Ctrl<Key>B:            backward-character()\n\
X    <Key>0xff51:        backward-character()\n\
X    Ctrl<Key>A:            beginning-of-line()\n\
X    Ctrl<Key>E:            end-of-line()\n\
X    Ctrl<Key>U:            universal-argument()\n\
X    Ctrl<Key>D:            delete-next-character()\n\
X    Ctrl<Key>H:            delete-previous-character()\n\
X    <Key>0xff7f:        delete-previous-character()\n\
X    <Key>0xffff:        delete-previous-character()\n\
X    <Key>0xff08:        delete-previous-character()\n\
X    Ctrl<Key>X:            exchange-point-and-mark()\n\
X    Ctrl<Key>W:            kill-region()\n\
X    Ctrl<Key>K:            kill-to-end-of-line()\n\
X    Meta<Key>D:            kill-to-beginning-of-line()\n\
X    Ctrl<Key>Y:            yank-killed-text()\n\
X    Ctrl<Key>J:            newline()\n\
X    <Key>0xff0a:        newline()\n\
X    Ctrl<Key>M:            newline()\n\
X    <Key>0xff0d:        newline()\n\
X    Ctrl<Key>G:            abort()\n\
X    Ctrl<Key>C:            abort()\n\
X    <Btn1Down>:            set-cursor-to-mouse()\n\
X    <Btn2Down>:            get-x-buffer()\n\
X    <Btn3Down>:            set-mark-to-mouse()\n\
X    Ctrl<Key>0x20:        make-this-the-mark()\n\
X    <Key>0x20:            complete-filename()\n\
X    Ctrl<Key>I:            complete-filename()\n\
X    <Key>0xff09:        complete-filename()\n\
X    Shift<Key>/:        list-files()\n\
X    <Key>/:                insert-char()\n\
X    <Key>?:                list-files()\n\
X    <Key>:                insert-char()\n\
X";
X
X
Xstatic void CursorForward(), CursorBack(), BeginningOfBuf(), EndOfBuf(),
X UnivArgument(), DeleteCharForward(), DeleteCharBack(), KillToEnd(),
X KillToBeginning(), YankKilledStuff(), MakeMark(), ExchangeMarkAndPoint(),
X CutMarkToPoint(), FinishedInput(), QuitInput(), SetCursor(), SetMark(),
X GetXBuffer(), CharInsert(), CompleteFilename(), ListFiles();
X
X/* Actions Table */
Xstatic XtActionsRec actionsList [] = {
X/* motion bindings */
X    {"forward-character",             CursorForward},
X    {"backward-character",             CursorBack},
X    {"beginning-of-line",             BeginningOfBuf},
X    {"end-of-line",                 EndOfBuf},
X    {"universal-argument",            UnivArgument},
X/* delete bindings */
X    {"delete-next-character",         DeleteCharForward},
X    {"delete-previous-character",    DeleteCharBack},
X/* kill bindings */
X    {"kill-to-end-of-line",         KillToEnd},
X    {"kill-to-beginning-of-line",     KillToBeginning},
X/* yank bindings */
X    {"yank-killed-text",             YankKilledStuff},
X    {"make-this-the-mark",            MakeMark},
X    {"exchange-point-and-mark",        ExchangeMarkAndPoint},
X    {"kill-region",                    CutMarkToPoint},
X/* new line stuff */
X    {"newline",                     FinishedInput},
X    {"abort",                        QuitInput},
X/* Selection stuff */
X    {"set-cursor-to-mouse",            SetCursor},
X    {"set-mark-to-mouse",            SetMark},
X    {"get-x-buffer",                GetXBuffer},
X/* filename completion and listing of files */
X    {"complete-filename",            CompleteFilename},
X    {"list-files",                     ListFiles},
X/* Insert character */
X    {"insert-char",                    CharInsert},
X};
X
Xstatic int zero = 0;
X
X#define offset(field) XtOffset(MinibufWidget, field)
Xstatic XtResource resources[] = {
X    {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
X     offset(minibuf.foreground), XtRString, "Black"},
X    {XtNfont,  XtCFont, XtRFontStruct, sizeof(XFontStruct *),
X     offset(minibuf.finfo),XtRString, DEFAULTFONT},
X    {XtNcursor, XtCCursor, XtRCursor, sizeof(Cursor),
X     offset(minibuf.cursor), XtRString, "xterm"},
X    {XtNfinishedCallback, XtCCallback, XtRCallback, sizeof(XtProc),
X     offset(minibuf.finishedCallback), XtRCallback, (caddr_t)NULL},
X#ifdef TYPEOUT
X    {XtNtypeoutColumns, XtCTypeoutColumns, XtRInt, sizeof(int),
X     offset(minibuf.typeoutColumns), XtRInt, (caddr_t)&zero},
X    {XtNtypeout, XtCtypeout, XtRPointer, sizeof(Widget),
X     offset(minibuf.typeout), XtRPointer, (caddr_t)NULL},
X#endif
X};
X
Xstatic void Initialize(), Realize(), Destroy(), Redisplay(), Resize();
X
X/*
X *  ...ClassData must be initialized at compile time.  Must initialize
X *  all substructures.  (Actually, last two here need not be initialized
X *  since not used.)
X */
XMinibufClassRec minibufClassRec = {
X    {
X        (WidgetClass) &widgetClassRec,    /* superclass            */
X        "Minibuf",                        /* class_name            */
X        sizeof(MinibufRec),                /* size                    */
X        NULL,                            /* class_initialize        */
X        NULL,                            /* class_part_initialize*/
X        FALSE,                            /* class_inited              */
X        Initialize,                        /* initialize            */
X        NULL,                            /* initialize_hook        */
X        Realize,                        /* realize                 */
X        actionsList,                    /* actions                  */
X        XtNumber(actionsList),            /* num_actions              */
X        resources,                        /* resources              */
X        XtNumber(resources),            /* resource_count          */
X        NULLQUARK,                        /* xrm_class              */
X        TRUE,                            /* compress_motion          */
X        TRUE,                            /* compress_exposure    */
X        TRUE,                            /* compress_enterleave  */
X        FALSE,                            /* visible_interest          */
X        Destroy,                        /* destroy                  */
X        Resize,                            /* resize                  */
X        Redisplay,                        /* expose                  */
X        NULL,                            /* set_values              */
X        NULL,                            /* set_values_hook          */
X        XtInheritSetValuesAlmost,        /* set_values_almost    */
X        NULL,                            /* get_values_hook          */
X        NULL,                            /* accept_focus              */
X        XtVersion,                        /* version                  */
X        NULL,                            /* callback_private          */
X        defaultTranslations,            /* tm_table                  */
X        NULL,                            /* query_geometry          */
X#ifdef XtCAccelerators
X        XtInheritDisplayAccelerator,    /* display_accelerator    */
X        NULL                            /* extension        */
X#endif /* XtCAccelerators */
X    },  /* CoreClass fields initialization */
X    {
X        0,                                /* field not used        */
X    },  /* MinibufClass fields initialization */
X};
X
X/* for public consumption */
XWidgetClass minibufWidgetClass = (WidgetClass)&minibufClassRec;
X
X/*ARGSUSED*/
Xstatic void Initialize(request, new)
XWidget request, new;
X{
X    register MinibufWidget buf = (MinibufWidget) new;
X    XGCValues gcv;
X
X    mbuf(string) = mbuf(killBuffer) = NULL;
X    mbuf(size) = mbuf(startPos) = mbuf(cursorPos) = mbuf(mark)
X     = mbuf(killBufferLen) = mbuf(killBufferSize) = mbuf(len)
X     = mbuf(cols) = mbuf(promptLen) = 0;
X    mbuf(arg) = 1;
X    mbuf(cursorX) = 0;
X    mbuf(inputMode) = FALSE;
X    gcv.foreground = mbuf(foreground);
X    gcv.background = mcore(background_pixel);
X    gcv.font = mbuf(finfo)->fid;
X    mbuf(normal_gc) = XtGetGC(new, GCForeground | GCBackground | GCFont,
X     &gcv);
X    gcv.foreground = mbuf(foreground) ^ mcore(background_pixel);
X    gcv.function = GXxor;
X    mbuf(invert_gc) = XtGetGC(new, GCForeground | GCBackground | GCFont |
X     GCFunction, &gcv);
X
X    /* Compute these correctly */
X    if (mcore(height) == 0)
X        mcore(height) = fontheight(mbuf(finfo));
X
X    if ((mbuf(cols) = mcore(width) / fontwidth(mbuf(finfo))) < MIN_COLS) {
X        /* Set it to MIN_COLS */
X        mcore(width) = MIN_COLS * fontwidth(mbuf(finfo));
X    }
X}
X
X/* Wish the primitive widget had a cursor .. */
Xstatic void Realize(w, valueMask, attributes)
Xregister Widget w;
XMask *valueMask;
XXSetWindowAttributes *attributes;
X{
X    if ((attributes->cursor = ((MinibufWidget)w)->minibuf.cursor) != None)
X     *valueMask |= CWCursor;
X
X    XtCreateWindow( w, (unsigned int)InputOutput, (Visual *)CopyFromParent,
X     *valueMask, attributes );
X}
X
Xstatic void Destroy(w)
XWidget w;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X
X    if (mbuf(string) != NULL)
X        free(mbuf(string));
X    if (mbuf(killBuffer) != NULL)
X        free(mbuf(killBuffer));
X    XtDestroyGC(mbuf(normal_gc));
X    XtDestroyGC(mbuf(invert_gc));
X}
X
X
X/*ARGSUSED*/
Xstatic void Redisplay(w, event, region)
XWidget w;
XXEvent *event;
XRegion region;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    static void DisplayBuf(), DisplayCursor();
X
X    if (!XtIsRealized(w))
X        return;
X    DisplayBuf(buf, TRUE);
X    if (mbuf(cursorOn) == TRUE)
X        DisplayCursor(buf);
X}
X
X
Xstatic void Resize(w)
XWidget w;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    static void DisplayBuf(), DisplayCursor();
X
X    /*
X     *  We should probably do some geometry management stuff here, if
X     *  the number of cols is less than MIN_COLS
X     */
X    mbuf(cols) = mcore(width) / fontwidth(mbuf(finfo));
X    if (!XtIsRealized(w))
X        return;
X    DisplayBuf(buf, TRUE);
X    if (mbuf(cursorOn) == TRUE)
X        DisplayCursor(buf);
X}
X
X/*
X *  Displays the buffer. When called with redraw = TRUE, it clears the
X *  entire buffer and redraws it. If redraw = FALSE, then it clears from
X *  the cursor position to the end of the buffer, and then redraws just
X *  that section. This allows for fast update when a single character is
X *  typed, or deleted, usually at the end of the line. If redraw is
X *  FALSE, teh cursor must be turned off before this is called -
X *  otherwise it may or may not vanish, causing problems. Typically, we
X *  hide the cursor, then update the buffer string and data, and then
X *  call this procedure. Note that for delete-char-forward, char-insert,
X *  and StrInsert, this gets called AFTER the mbuf(string) is updated
X *  but before the mbuf(cursorPos) is updated, which in delete-char-back
X *  and cut-point-to-mark, it is called afetr the cursorPos is updated
X *  as well, so that the changed region is redrawn.
X */
Xstatic void DisplayBuf(buf, redraw)
Xregister MinibufWidget buf;
Xint redraw;
X{
X    register int nChars, isLonger;
X    int start;
X    register Widget w = (Widget) buf;
X
X    if (redraw) {
X        start = mbuf(startPos);
X        XClearWindow(XtDisplay(w), XtWindow(w));
X    } else {
X        start = mbuf(cursorPos);
X        mbuf(cursorX) = (mbuf(cursorPos) - mbuf(startPos)) *
X         fontwidth(mbuf(finfo));
X        XClearArea(XtDisplay(w), XtWindow(w), mbuf(cursorX), 0,
X         mcore(width) - mbuf(cursorX), (unsigned) fontheight(mbuf(finfo)),
X         False);
X    }
X    nChars = (mbuf(startPos) + mbuf(cols));
X    isLonger = (nChars < mbuf(len));
X    if (isLonger)
X        nChars -= start + 1;
X    else
X        nChars = mbuf(len) - start;
X
X    XDrawImageString(XtDisplay(w), XtWindow(w), mbuf(normal_gc),
X     redraw? 0 : mbuf(cursorX), fontbaseline(mbuf(finfo)),
X     mbuf(string) + start, nChars);
X
X    if (isLonger)
X        XDrawImageString(XtDisplay(w), XtWindow(w), mbuf(normal_gc),
X         (mbuf(cols) - 1) * fontwidth(mbuf(finfo)),
X         fontbaseline(mbuf(finfo)), "!", 1);
X}
X
X
X/*
X *  Display the buffer cursor. It does the devious computations for
X *  Horiz scrolling of the minibuffer, back and forward, and does a
X *  'hard' redisplay (i.e. with a clear) of the window if a horiz.
X *  scroll is done.
X */
Xstatic void DisplayCursor(buf)
Xregister MinibufWidget buf;
X{
X    register int col;
X    register Widget w = (Widget) buf;
X
X    if (mbuf(cursorPos) > mbuf(len))
X        mbuf(cursorPos) = mbuf(len);
X    if (mbuf(cursorPos) < mbuf(promptLen))
X        mbuf(cursorPos) = mbuf(promptLen);
X
X    col = (mbuf(cursorPos) - mbuf(startPos));
X
X    if ((col >= mbuf(cols)) || (col < 0)) {
X        if (mbuf(cursorPos) < mbuf(cols) - 1) {
X            /*
X             *  The cursor will be seen if the start
X             *  position is 0, which looks nicer than half
X             *  the prompt showing
X             */
X            mbuf(startPos) = 0;
X            col = mbuf(cursorPos);
X        } else {
X            /*
X             *  Horiz scroll the buffer to mbuf(cols)/2
X             *  before cursorPos. this acounts for both
X             *  forward and backward scrolling.
X             */
X            col = (mbuf(cols)) / 2 - 1;
X            mbuf(startPos) = mbuf(cursorPos) - col;
X            if (mbuf(startPos) < 0) {
X                mbuf(startPos) = 0;
X                col = (mbuf(cursorPos) - mbuf(startPos));
X            }
X        }
X        DisplayBuf(buf, TRUE);
X    }
X    mbuf(cursorX) = col * fontwidth(mbuf(finfo));
X    XFillRectangle(XtDisplay(w), XtWindow(w), mbuf(invert_gc),
X     mbuf(cursorX), 0, (unsigned) fontwidth(mbuf(finfo)),
X     (unsigned) fontheight(mbuf(finfo)));
X    mbuf(cursorOn) = TRUE;
X}
X
X
X
X/*
X *  Hide the cursor
X */
Xstatic void ConcealCursor(buf)
Xregister MinibufWidget buf;
X{
X    register Widget w = (Widget) buf;
X    if (mbuf(cursorOn) == TRUE) {
X        XFillRectangle(XtDisplay(w), XtWindow(w), mbuf(invert_gc),
X         mbuf(cursorX), 0, (unsigned) fontwidth(mbuf(finfo)),
X         (unsigned) fontheight(mbuf(finfo)));
X        mbuf(cursorOn) = FALSE;
X    }
X}
X
X
X
X/*
X *  Inserts len characters of string s into the buffer at the current
X *  cursor position. Note that it does not re-display the cursor, while
X *  CharInsert does.
X */
X/* The universal argument has no effect on this one */
Xstatic void StrInsert(s, len, buf)
Xregister char *s;
Xregister int len;
Xregister MinibufWidget buf;
X{
X    register int newLen = mbuf(len) + len;
X    static void QuitInput();
X
X    while (newLen > mbuf(size)) {
X        mbuf(size) += BUF_BLOCK;
X        if (mbuf(string) == NULL)
X            mbuf(string) = XtMalloc((unsigned) mbuf(size));
X        else
X            mbuf(string) = XtRealloc(mbuf(string), (unsigned) mbuf(size));
X        if ( mbuf(string) == NULL) {
X            mbuf(size) = 0;
X            mbuf(len) = 0;
X            mbuf(inputMode) = FALSE;
X            QuitInput((Widget) buf, (XEvent *) NULL, (String *) NULL,
X             (Cardinal *) NULL);
X            return;
X        }
X    }
X    bcopy(mbuf(string) + mbuf(cursorPos), mbuf(string) + mbuf(cursorPos) + len,
X     mbuf(len) - mbuf(cursorPos));
X    bcopy(s, mbuf(string) + mbuf(cursorPos), len);
X    mbuf(len) += len;
X    DisplayBuf(buf, FALSE);
X    mbuf(cursorPos) += len;
X    mbuf(arg) = 1;
X}
X
X
X
X/*
X *  Inserts c arg times into buffer string at current position and moves
X *  cursor forward
X */
X/*ARGSUSED*/
Xstatic void CharInsert(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int i = mbuf(cursorPos);
X    register int j = mbuf(arg);
X    static void QuitInput();
X    KeySym keysym;
X    XComposeStatus compose;
X    int status;
X    char c;
X
X    CheckMode();
X    status = XLookupString(&event->xkey, &c, 1, &keysym, &compose);
X    if (!status || !isascii(c) || !isprint(c))
X        return;
X    ConcealCursor(buf);
X    while (mbuf(size) < mbuf(len) + mbuf(arg)) {     /* Need more space */
X        mbuf(size) += BUF_BLOCK;
X        if (mbuf(string) == NULL)
X            mbuf(string) = XtMalloc((unsigned) mbuf(size));
X        else
X            mbuf(string) = XtRealloc(mbuf(string), (unsigned) mbuf(size));
X        if (mbuf(string) == NULL) {
X            mbuf(size) = 0;
X            mbuf(len) = 0;
X            mbuf(inputMode) = FALSE;
X            QuitInput(w, event, params, numparams);
X            return;
X        }
X    }
X
X    bcopy(mbuf(string) + i, mbuf(string) + i + mbuf(arg),
X     mbuf(len) - i);
X    mbuf(len) += mbuf(arg);
X    for (; j > 0; j--,i++) {
X        mbuf(string)[i] = c;
X    }
X    DisplayBuf(buf, FALSE);
X    mbuf(cursorPos) += mbuf(arg);
X    mbuf(arg) = 1;
X    DisplayCursor(buf);
X}
X
X
X/*ARGSUSED*/
Xstatic void CursorBack(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int i;
X
X    CheckMode();
X    if ((i = (mbuf(cursorPos) - mbuf(arg))) < mbuf(promptLen))
X        i = mbuf(promptLen);
X
X    ConcealCursor(buf);
X    mbuf(cursorPos) = i;
X    mbuf(arg) = 1;
X    DisplayCursor(buf);
X}
X
X
X/*ARGSUSED*/
Xstatic void CursorForward(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int i;
X
X    CheckMode();
X    if ((i = (mbuf(cursorPos) + mbuf(arg))) > mbuf(len))
X        i = mbuf(len);
X
X    ConcealCursor(buf);
X    mbuf(cursorPos) = i;
X    mbuf(arg) = 1;
X    DisplayCursor(buf);
X}
X
X
X/*ARGSUSED*/
Xstatic void SetCursor(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    Window foo1, foo2;
X    int foo3, foo4;
X    unsigned int foo5;
X    int x, y;
X    register int mCol;
X
X    CheckMode();
X    (void) XQueryPointer(XtDisplay(w), XtWindow(w),
X     &foo1, &foo2, &foo3, &foo4, &x, &y, &foo5);
X    mCol = x / fontwidth(mbuf(finfo));
X    ConcealCursor(buf);
X    mbuf(cursorPos) = mbuf(startPos) + mCol;
X    mbuf(arg) = 1;
X    DisplayCursor(buf);
X}
X
X/*
X *  Tries to flash the cursor to the mark, and then back to the cursor
X *  position. This will only be useful when bound to the mouse buttons.
X */
X/*ARGSUSED*/
Xstatic void SetMark(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int tmp;
X    Window foo1, foo2;
X    int foo3, foo4;
X    unsigned int foo5;
X    int x, y;
X    register int mCol;
X
X    CheckMode();
X    tmp = mbuf(cursorPos);
X    (void) XQueryPointer(XtDisplay(w), XtWindow(w),
X     &foo1, &foo2, &foo3, &foo4, &x, &y, &foo5);
X    mCol = x / fontwidth(mbuf(finfo));
X    ConcealCursor(buf);
X    mbuf(cursorPos) = mbuf(mark) = mbuf(startPos) + mCol;
X    DisplayCursor(buf);
X    XFlush(XtDisplay(w));
X    usleep(DELAY);
X    ConcealCursor(buf);
X    mbuf(cursorPos) = tmp;
X    DisplayCursor(buf);
X    mbuf(arg) = 1;
X}
X
X
X
X/* The universal argument has no effect on this one */
X/*ARGSUSED*/
Xstatic void BeginningOfBuf(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    CheckMode();
X    ConcealCursor(buf);
X    mbuf(cursorPos) = mbuf(promptLen);
X    DisplayCursor(buf);
X}
X
X
X
X/* The universal argument has no effect on this one */
X/*ARGSUSED*/
Xstatic void EndOfBuf(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X
X    CheckMode();
X    ConcealCursor(buf);
X    mbuf(cursorPos) = mbuf(len);
X    DisplayCursor(buf);
X}
X
X
X
X/*ARGSUSED*/
Xstatic void DeleteCharForward(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int i;
X
X    CheckMode();
X    if ((i = (mbuf(cursorPos) + mbuf(arg))) > mbuf(len))
X        i = mbuf(len);
X
X    ConcealCursor(buf);
X    bcopy(mbuf(string) + i, mbuf(string) + mbuf(cursorPos), mbuf(len) - i);
X    mbuf(len) -= i - mbuf(cursorPos);
X    mbuf(arg) = 1;
X    DisplayBuf(buf, FALSE);
X    DisplayCursor(buf);
X}
X
X
X/*ARGSUSED*/
Xstatic void DeleteCharBack(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int i;
X
X    CheckMode();
X    if ((i = (mbuf(cursorPos) - mbuf(arg))) < mbuf(promptLen))
X        i = mbuf(promptLen);
X
X    ConcealCursor(buf);
X    bcopy(mbuf(string) + mbuf(cursorPos), mbuf(string) + i, mbuf(len) - i);
X    mbuf(len) += i - mbuf(cursorPos);
X    mbuf(cursorPos) = i;
X    mbuf(arg) = 1;
X    DisplayBuf(buf, FALSE);
X    DisplayCursor(buf);
X}
X
X
X
X
X/* The universal argument has no effect on this one */
X/* Like Setmark, this flashes the cursor */
X/*ARGSUSED*/
Xstatic void MakeMark(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X
X    CheckMode();
X    mbuf(mark) = mbuf(cursorPos);
X    mbuf(arg) = 1;
X}
X
X
X
X/*ARGSUSED*/
Xstatic void ExchangeMarkAndPoint(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int tmp = mbuf(cursorPos);
X
X    CheckMode();
X    if (mbuf(mark) < mbuf(promptLen))
X        mbuf(mark) = mbuf(promptLen);
X
X    if (mbuf(mark) > mbuf(len))
X        mbuf(mark) = mbuf(len);
X
X    ConcealCursor(buf);
X    mbuf(cursorPos) = mbuf(mark);
X    mbuf(mark) = tmp;
X    mbuf(arg) = 1;
X    DisplayCursor(buf);
X
X}
X
X
X
X/* The universal argument has no effect on this one */
X/*ARGSUSED*/
Xstatic void CutMarkToPoint(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int lower, upper;
X    static void QuitInput();
X
X    CheckMode();
X
X    if (mbuf(mark) < mbuf(promptLen))
X        mbuf(mark) = mbuf(promptLen);
X
X    if (mbuf(mark) > mbuf(len))
X        mbuf(mark) = mbuf(len);
X
X    if (mbuf(mark) < mbuf(cursorPos)) {
X         lower = mbuf(mark);
X        upper = mbuf(cursorPos);
X    } else {
X        lower = mbuf(cursorPos);
X        upper = mbuf(mark);
X    }
X
X    mbuf(killBufferLen) = upper - lower;
X    while (mbuf(killBufferLen) > mbuf(killBufferSize)) {
X         mbuf(killBufferSize) += BUF_BLOCK;
X        if (mbuf(killBuffer) == NULL)
X            mbuf(killBuffer) = XtMalloc((unsigned) mbuf(size));
X        else
X            mbuf(killBuffer) = XtRealloc(mbuf(killBuffer),
X             (unsigned) mbuf(size));
X         if (mbuf(killBuffer) == NULL) {
X             mbuf(killBufferSize) = 0;
X            mbuf(killBufferLen) = 0;
X            mbuf(inputMode) = FALSE;
X            QuitInput(w, event, params, numparams);
X            return;
X        }
X    }
X
X    ConcealCursor(buf);
X    bcopy(mbuf(string) + lower, mbuf(killBuffer), mbuf(killBufferLen));
X    bcopy(mbuf(string) + upper, mbuf(string) + lower, mbuf(len) - upper);
X    mbuf(cursorPos) = mbuf(mark) = lower;
X    mbuf(len) -= mbuf(killBufferLen);
X    mbuf(arg) = 1;
X    DisplayBuf(buf, FALSE);
X    DisplayCursor(buf);
X}
X
X
X
X/* The universal argument has no effect on this one */
X/*ARGSUSED*/
Xstatic void KillToEnd(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int tmp_mark;
X
X    CheckMode();
X    tmp_mark = mbuf(mark);
X    mbuf(mark) = mbuf(len);
X    CutMarkToPoint(w, event, params, numparams);
X    mbuf(mark) = tmp_mark;
X}
X
X
X
X/* The universal argument has no effect on this one */
X/*ARGSUSED*/
Xstatic void KillToBeginning(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register int tmp_mark;
X
X    CheckMode();
X    tmp_mark = mbuf(mark);
X    mbuf(mark) = mbuf(promptLen);
X    CutMarkToPoint(w, event, params, numparams);
X    mbuf(mark) = tmp_mark;
X}
X
X
X
X/*ARGSUSED*/
Xstatic void UnivArgument(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X
X    CheckMode();
X    mbuf(arg) *= 4;
X}
X
X
X/*
X *  The universal argument has no effect on this one - maybe it should,
X *  I'm not sure. So I'll take the easy way out
X */
X/*ARGSUSED*/
Xstatic void YankKilledStuff(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X
X    CheckMode();
X    ConcealCursor(buf);
X    mbuf(mark) = mbuf(cursorPos);
X    StrInsert(mbuf(killBuffer), mbuf(killBufferLen), buf);
X    DisplayCursor(buf);
X}
X
X
X/*ARGSUSED*/
Xstatic void GetXBuffer(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register char *s;
X    int nBytes;
X
X    CheckMode();
X    ConcealCursor(buf);
X    s = XFetchBytes(XtDisplay(w), &nBytes);
X    StrInsert(s, nBytes, buf);
X    DisplayCursor(buf);
X}
X
X
X
X/*ARGSUSED*/
Xstatic void FinishedInput(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    register char *s;
X    register int len = mbuf(len) - mbuf(promptLen);
X
X    CheckMode();
X    ConcealCursor(buf);
X    XFlush(XtDisplay(w));
X    mbuf(len) = 0;
X    mbuf(cursorPos) = mbuf(startPos) = 0;
X    mbuf(inputMode) = FALSE;
X    if ((s = XtMalloc((unsigned) (len + 1))) != NULL) {
X        bcopy(mbuf(string) + mbuf(promptLen), s, len);
X        s[len] = '\0';
X    }
X    XtCallCallbacks(w, XtNfinishedCallback, s);
X}
X
X
X/*ARGSUSED*/
Xstatic void QuitInput(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    char *savestr;
X    int savelen;
X
X    CheckMode();
X    ConcealCursor(buf);
X    mbuf(len) = 0;
X    mbuf(cursorPos) = mbuf(startPos) = 0;
X    mbuf(inputMode) = FALSE;
X
X    savestr = mbuf(string);
X    savelen = mbuf(len);
X    mbuf(string) = ABORT_MSG;
X    mbuf(len) = strlen(ABORT_MSG);
X    DisplayBuf(buf, TRUE);
X    XFlush(XtDisplay(w));
X    mbuf(string) = savestr;
X    mbuf(len) = savelen;
X
X    /*
X     *  We don't redisplay the cursor - we've gone out of input mode, but
X     *  we invoke the callback which tells the user about this
X     */
X    XtCallCallbacks(w, XtNfinishedCallback, (caddr_t) NULL);
X}
X
Xstatic MinibufWidget curbuf = NULL;
X
X/*ARGSUSED*/
Xstatic void CompleteFilename(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X
X    CheckMode();
X    if (!mbuf(completion)) {
X        CharInsert(w, event, params, numparams);
X        return;
X    }
X    ConcealCursor(buf);
X    mbuf(string)[mbuf(len)] = '\0';
X    mbuf(cursorPos) = mbuf(len);
X    curbuf = buf;
X    (void) f_complete(mbuf(string) + mbuf(promptLen),
X     mbuf(cursorPos) - mbuf(promptLen), 0, ' ');
X    DisplayCursor(buf);
X
X}
X
Xvoid rbell()
X{
X    register MinibufWidget buf = curbuf;
X
X    XBell(XtDisplay(mcore(self)), 0);
X}
X
X/*
X *  'at' is somewhere in mbuf(string), and we replace from 'at' to the
X *  end of the line with the first 'len' chars of string 's' - 'curpos'
X *  is updated.
X */
Xvoid insert_s(at, s, len, curpos)
Xchar *at;
Xchar *s;
Xint *curpos;
X{
X    register MinibufWidget buf = curbuf;
X
X    mbuf(len) = mbuf(cursorPos) = at - mbuf(string);
X    *at = '\0';
X    StrInsert(s, len, buf);
X    *curpos = mbuf(cursorPos) - mbuf(promptLen);
X    mbuf(string)[mbuf(len)] = '\0';
X}
X
X/* add_mess(s) char *s;
X *    inserts 's' at the end of the buffer, then waits a respectable
X *    interval, deletes 's', and returns
X */
Xvoid add_mess(s)
Xchar *s;
X{
X    register MinibufWidget buf = curbuf;
X    int savecursor = mbuf(cursorPos);
X
X    StrInsert(s, strlen(s), buf);
X    DisplayCursor(buf);
X    ConcealCursor(buf);
X    rbell();
X    usleep(DELAY);
X    mbuf(len) = mbuf(cursorPos) = savecursor;
X    mbuf(string)[savecursor] = '\0';
X    DisplayBuf(buf, FALSE);
X}
X
X/*ARGSUSED*/
Xstatic void ListFiles(w, event, params, numparams)
XWidget w;
XXEvent *event;
XString *params;
XCardinal *numparams;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X
X    CheckMode();
X    if (!mbuf(completion)) {
X        CharInsert(w, event, params, numparams);
X        return;
X    }
X    /*
X     *  We haven't implemented a proper window typeout yet - if I
X     *  can manage it with the Text widget, but right now, it
X     *  redraws twice, and refuses to go away unless you take the
X     *  mouse into that window and click - yech!
X     */
X    curbuf = (MinibufWidget) w;
X#ifdef TYPEOUT
X    if (mbuf(typeout)) {
X        (void) f_complete(mbuf(string) + mbuf(promptLen),
X         mbuf(cursorPos) - mbuf(promptLen), mbuf(typeoutColumns), '?');
X    } else
X#endif TYPEOUT
X        rbell();
X}
X
X/*
X *  Public routines - these should probably be done with XtSetValues()
X *  but that means more work... Sigh!
X */
Xvoid MinibufGetInput(w, prompt, defaultInput, complete)
XWidget w;
Xregister char *prompt;
Xregister char *defaultInput;
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    if (buf == NULL) {
X        return;
X    }
X
X    mbuf(cursorPos) = mbuf(len) = 0;
X    if (prompt != NULL) {
X        StrInsert(prompt, strlen(prompt), buf);
X    }
X
X    mbuf(promptLen) = mbuf(cursorPos);
X
X    if (defaultInput != NULL) {
X        StrInsert(defaultInput, strlen(defaultInput), buf);
X        mbuf(cursorPos) = mbuf(promptLen);
X    }
X    mbuf(inputMode) = TRUE;
X    mbuf(completion) = complete;
X    DisplayCursor(buf);
X    /*
X     *  Focus events on the widget exclusively, not spring loaded - we
X     *  remove the grab in the callback
X     */
X}
X
X
X/*
X *  This displays msg in the buffer - since it uses the string passed in
X *  directly, and does not affect the buffer string (which is saved and
X *  restored), it should result in no more mallocs.
X */
Xvoid MinibufDisplayMessage(w, msg, ringbell)
XWidget w;
Xregister char *msg;
Xint ringbell;    /* Do we want bell to sound */
X{
X    register MinibufWidget buf = (MinibufWidget) w;
X    char *savestr;
X    int savelen;
X
X    if (buf == NULL || msg == NULL) {
X        return;
X    }
X
X    mbuf(inputMode) = FALSE;
X    mbuf(len) = mbuf(cursorPos) = mbuf(startPos) = 0;
X    savestr = mbuf(string);
X    savelen = mbuf(len);
X    mbuf(string) = msg;
X    mbuf(len) = strlen(msg);
X
X    DisplayBuf(buf, TRUE);
X    XFlush(XtDisplay(w));
X    if (ringbell)        /* Maybe a visible bell for fun! One day...*/
X        XBell(XtDisplay(w), 0);
X    mbuf(string) = savestr;
X    mbuf(len) = savelen;
X}
X
END_OF_FILE
if test 29958 -ne `wc -c <'xtroff/XtStuff/Minibuf.c'`; then
    echo shar: \"'xtroff/XtStuff/Minibuf.c'\" unpacked with wrong size!
fi
# end of 'xtroff/XtStuff/Minibuf.c'
fi
echo shar: End of archive 16 \(of 18\).
cp /dev/null ark16isdone
MISSING=""
for I in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked all 18 archives.
    rm -f ark[1-9]isdone ark[1-9][0-9]isdone
else
    echo You still need to unpack the following archives:
    echo "        " ${MISSING}
fi
##  End of shell archive.
exit 0