/* $Xorg: AsciiSink.c,v 1.4 2001/02/09 02:03:42 xorgcvs Exp $ */
/***********************************************************
Copyright 1987, 1988, 1994, 1998 The Open Group
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
******************************************************************/
/* $XFree86: xc/lib/Xaw/AsciiSink.c,v 1.26 2001/12/14 19:54:38 dawes Exp $ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include <X11/Xatom.h>
#include <X11/Xaw/XawInit.h>
#include <X11/Xaw/AsciiSinkP.h>
#include <X11/Xaw/AsciiSrcP.h>
#include <X11/Xaw/TextP.h>
#include "Private.h"
#ifdef GETLASTPOS
#undef GETLASTPOS /* We will use our own GETLASTPOS */
#endif
#define GETLASTPOS \
XawTextSourceScan(source, 0, XawstAll, XawsdRight, 1, True)
/*
* Class Methods
*/
static void XawAsciiSinkClassPartInitialize(WidgetClass);
static void XawAsciiSinkInitialize(Widget, Widget, ArgList, Cardinal*);
static void XawAsciiSinkDestroy(Widget);
static void XawAsciiSinkResize(Widget);
static Boolean XawAsciiSinkSetValues(Widget, Widget, Widget,
ArgList, Cardinal*);
static int MaxLines(Widget, unsigned int);
static int MaxHeight(Widget, int);
static void SetTabs(Widget, int, short*);
static void DisplayText(Widget, int, int,
XawTextPosition, XawTextPosition, Bool);
static void InsertCursor(Widget, int, int, XawTextInsertState);
static void FindPosition(Widget, XawTextPosition, int, int, Bool,
XawTextPosition*, int*, int*);
static void FindDistance(Widget, XawTextPosition, int, XawTextPosition, int*,
XawTextPosition*, int*);
static void Resolve(Widget, XawTextPosition, int, int, XawTextPosition*);
static void GetCursorBounds(Widget, XRectangle*);
#ifndef OLDXAW
static void AsciiPreparePaint(Widget, int, int,
XawTextPosition, XawTextPosition, Bool);
static void AsciiDoPaint(Widget);
#endif
/*
* Prototypes
*/
static void GetGC(AsciiSinkObject);
static int CharWidth(AsciiSinkObject, XFontStruct*, int, unsigned int);
static unsigned int PaintText(Widget w, GC gc, int x, int y,
char *buf, int len, Bool);
/*
* Defined in TextSink.c
*/
void _XawTextSinkClearToBackground(Widget, int, int, unsigned, unsigned);
/*
* Initialization
*/
#define offset(field) XtOffsetOf(AsciiSinkRec, ascii_sink.field)
static XtResource resources[] = {
{
XtNfont,
XtCFont,
XtRFontStruct,
sizeof(XFontStruct*),
offset(font),
XtRString,
XtDefaultFont
},
{
XtNecho,
XtCOutput,
XtRBoolean,
sizeof(Boolean),
offset(echo),
XtRImmediate,
(XtPointer)True
},
{
XtNdisplayNonprinting,
XtCOutput,
XtRBoolean,
sizeof(Boolean),
offset(display_nonprinting),
XtRImmediate,
(XtPointer)
True
},
};
#undef offset
#define Superclass (&textSinkClassRec)
AsciiSinkClassRec asciiSinkClassRec = {
/* object */
{
(WidgetClass)Superclass, /* superclass */
"AsciiSink", /* class_name */
sizeof(AsciiSinkRec), /* widget_size */
XawInitializeWidgetSet, /* class_initialize */
XawAsciiSinkClassPartInitialize, /* class_part_initialize */
False, /* class_inited */
XawAsciiSinkInitialize, /* initialize */
NULL, /* initialize_hook */
NULL, /* obj1 */
NULL, /* obj2 */
0, /* obj3 */
resources, /* resources */
XtNumber(resources), /* num_resources */
NULLQUARK, /* xrm_class */
False, /* obj4 */
False, /* obj5 */
False, /* obj6 */
False, /* obj7 */
XawAsciiSinkDestroy, /* destroy */
(XtProc)XawAsciiSinkResize, /* obj8 */
NULL, /* obj9 */
XawAsciiSinkSetValues, /* set_values */
NULL, /* set_values_hook */
NULL, /* obj10 */
NULL, /* get_values_hook */
NULL, /* obj11 */
XtVersion, /* version */
NULL, /* callback_private */
NULL, /* obj12 */
NULL, /* obj13 */
NULL, /* obj14 */
NULL, /* extension */
},
/* text_sink */
{
DisplayText, /* DisplayText */
InsertCursor, /* InsertCursor */
XtInheritClearToBackground, /* ClearToBackground */
FindPosition, /* FindPosition */
FindDistance, /* FindDistance */
Resolve, /* Resolve */
MaxLines, /* MaxLines */
MaxHeight, /* MaxHeight */
SetTabs, /* SetTabs */
GetCursorBounds, /* GetCursorBounds */
#ifndef OLDXAW
NULL /* extension */
#endif
},
/* ascii_sink */
{
NULL, /* extension */
}
};
WidgetClass asciiSinkObjectClass = (WidgetClass)&asciiSinkClassRec;
/*
* Implementation
*/
static void
XawAsciiSinkClassPartInitialize(WidgetClass wc)
{
#ifndef OLDXAW
AsciiSinkObjectClass cclass = (AsciiSinkObjectClass)wc;
XrmQuark record_type = XrmPermStringToQuark("TextSink");
TextSinkExt ext = cclass->text_sink_class.extension;
while (ext) {
if (ext->record_type == record_type &&
ext->version == 1) {
ext->PreparePaint = AsciiPreparePaint;
ext->DoPaint = AsciiDoPaint;
break;
}
ext = (TextSinkExt)ext->next_extension;
}
if (ext == NULL)
XtError("TextSinkClass: cannot resolve extension.\n");
#endif
}
static int
CharWidth(AsciiSinkObject sink, XFontStruct *font, int x, unsigned int c)
{
int width = 0;
if (c == XawLF)
return (0);
if (c == XawTAB) {
int i;
Position *tab;
width = x;
/* Adjust for Left Margin */
x -= ((TextWidget)XtParent((Widget)sink))->text.left_margin;
i = 0;
tab = sink->text_sink.tabs;
/*CONSTCOND*/
while (1) {
if (x >= 0 && x < *tab)
return (*tab - x);
/* Start again */
if (++i >= sink->text_sink.tab_count) {
x -= *tab;
i = 0;
tab = sink->text_sink.tabs;
if (width == x)
return (0);
}
else
++tab;
}
/*NOTREACHED*/
}
if ((c & 0177) < XawSP || c == 0177) {
if (sink->ascii_sink.display_nonprinting) {
if (c > 0177) {
width = CharWidth(sink, font, x, '\\');
width += CharWidth(sink, font, x, ((c >> 6) & 7) + '0');
width += CharWidth(sink, font, x, ((c >> 3) & 7) + '0');
c = (c & 7) + '0';
}
else {
width = CharWidth(sink, font, x, '^');
if ((c |= 0100) == 0177)
c = '?';
}
}
else
c = XawSP;
}
if (font->per_char
&& (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
width += font->per_char[c - font->min_char_or_byte2].width;
else
width += font->min_bounds.width;
return (width);
}
#ifndef OLDXAW
static int
GetTextWidth(TextWidget ctx, int current_width, XFontStruct *font,
XawTextPosition from, int length)
{
int i, width = 0;
XawTextBlock block;
XawTextPosition pos = from;
while (length > 0) {
pos = XawTextSourceRead(ctx->text.source, from, &block, length);
length -= pos - from;
from = pos;
for (i = 0; i < block.length; i++)
width += CharWidth((AsciiSinkObject)ctx->text.sink, font,
current_width + width,
(unsigned char)block.ptr[i]);
}
return (width);
}
static
void CalculateBearing(TextWidget ctx, XawTextPosition position, int x, int y,
int ascent, int descent, Bool highlight, Bool right)
{
/*
* Sample case:
*
* lbearing| width |rbearing
* | |
* | ####
* | ### |
* | #### |
* | #### |
* | ########## |
* | #### |
* | #### |
* | #### |
* | #### |
* |### |
* #### |
* | |
*
*/
AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
XawTextAnchor *anchor;
XawTextEntity *entity;
XawTextProperty *property;
XawTextPaintStruct *paint;
XawTextBlock block;
XFontStruct *font;
property = NULL;
if (XawTextSourceAnchorAndEntity(ctx->text.source, position,
&anchor, &entity) &&
(property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
font = property->font;
else
font = sink->ascii_sink.font;
if (right) {
if (font->max_bounds.rbearing > 0) {
int rbearing = font->max_bounds.rbearing - font->max_bounds.width;
unsigned char c;
(void)XawTextSourceRead(ctx->text.source, position, &block, 1);
c = *(unsigned char*)block.ptr;
if (c == '\t' || c == '\n')
c = ' ';
else if ((c & 0177) < XawSP || c == 0177) {
if (sink->ascii_sink.display_nonprinting)
c = c > 0177 ? (c & 7) + '0' : c + '@';
else
c = ' ';
}
if (font->per_char &&
(c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
rbearing = font->per_char[c - font->min_char_or_byte2].rbearing -
font->per_char[c - font->min_char_or_byte2].width;
if (rbearing > 0) {
paint = XtNew(XawTextPaintStruct);
paint->next = sink->text_sink.paint->bearings;
sink->text_sink.paint->bearings = paint;
paint->x = x - (paint->width = CharWidth(sink, font, 0, c));
paint->y = y + ascent;
paint->property = property;
paint->max_ascent = ascent;
paint->max_descent = descent;
paint->backtabs = NULL;
paint->highlight = highlight;
paint->length = 1;
paint->text = XtMalloc(1);
paint->text[0] = c;
}
}
}
else {
if (font->min_bounds.lbearing < 0) {
int lbearing = font->min_bounds.lbearing;
unsigned char c;
(void)XawTextSourceRead(ctx->text.source, position, &block, 1);
c = *(unsigned char*)block.ptr;
if (c == '\t' || c == '\n')
c = ' ';
else if ((c & 0177) < XawSP || c == 0177) {
if (sink->ascii_sink.display_nonprinting)
c = c > 0177 ? '\\' : c + '^';
else
c = ' ';
}
if (font->per_char &&
(c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
lbearing = font->per_char[c - font->min_char_or_byte2].lbearing;
if (lbearing < 0) {
paint = XtNew(XawTextPaintStruct);
paint->next = sink->text_sink.paint->bearings;
sink->text_sink.paint->bearings = paint;
paint->x = x;
paint->width = -CharWidth(sink, font, 0, c);
paint->y = y + ascent;
paint->property = property;
paint->max_ascent = ascent;
paint->max_descent = descent;
paint->backtabs = NULL;
paint->highlight = highlight;
paint->length = 1;
paint->text = XtMalloc(1);
paint->text[0] = c;
}
}
}
}
static void
AsciiPreparePaint(Widget w, int y, int line,
XawTextPosition from, XawTextPosition to, Bool highlight)
{
static XmuSegment segment;
static XmuScanline next;
static XmuScanline scanline = {0, &segment, &next};
static XmuArea area = {&scanline};
TextWidget ctx = (TextWidget)XtParent(w);
AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
XawTextPosition left, right, pos, pos2, tmp, length;
XawTextAnchor *anchor;
XawTextEntity *entity;
XawTextProperty *property;
int i, ascent = 0, descent = 0, xl, xr, x = ctx->text.left_margin, bufsiz;
XawTextBlock block;
XFontStruct *font;
XawTextPaintStruct *paint;
if (!sink->ascii_sink.echo)
return;
/* pass 1: calculate ascent/descent values and x coordinate */
/* XXX the MAX ascent/descent value should be in the line table XXX */
/* XXX the x coordinate can be a parameter, but since it is required
to calculate the ascent/descent, do it here to avoid an extra
search in the entities */
pos = tmp = left = ctx->text.lt.info[line].position;
right = ctx->text.lt.info[line + 1].position;
right = XawMin(right, ctx->text.lastPos + 1);
while (pos < right) {
if (XawTextSourceAnchorAndEntity(ctx->text.source, pos,
&anchor, &entity)) {
if ((property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
font = property->font;
else
font = sink->ascii_sink.font;
tmp = pos;
pos = anchor->position + entity->offset + entity->length;
if ((length = XawMin(from, pos) - tmp) > 0)
x += GetTextWidth(ctx, x, font, tmp, length);
ascent = XawMax(font->ascent, ascent);
descent = XawMax(font->descent, descent);
}
else if (anchor) {
ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
descent = XawMax(sink->ascii_sink.font->descent, descent);
while (entity && pos < right) {
tmp = pos;
if ((pos = anchor->position + entity->offset) < tmp)
pos = tmp;
else {
if ((length = XawMin(from, pos) - tmp) > 0) {
x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp,
length);
tmp += length;
}
if (pos < right) {
pos += entity->length;
if ((property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
font = property->font;
else
font = sink->ascii_sink.font;
if ((length = XawMin(from, pos) - tmp) > 0)
x += GetTextWidth(ctx, x, font, tmp, length);
ascent = XawMax(font->ascent, ascent);
descent = XawMax(font->descent, descent);
}
}
entity = entity->next;
}
if (anchor->entities == NULL) {
tmp = XawMin(pos, from);
if ((length = from - tmp) > 0)
x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp, length);
break;
}
}
else {
tmp = XawMin(pos, from);
if ((length = from - tmp) > 0)
x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp, length);
ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
descent = XawMax(sink->ascii_sink.font->descent, descent);
break;
}
}
if (!ascent)
ascent = sink->ascii_sink.font->ascent;
if (!descent)
descent = sink->ascii_sink.font->descent;
xl = x;
/* pass 2: feed the XawTextPaintStruct lists */
pos = from;
while (pos < to) {
paint = XtNew(XawTextPaintStruct);
paint->next = sink->text_sink.paint->paint;
sink->text_sink.paint->paint = paint;
paint->x = x;
paint->y = y + ascent;
paint->property = NULL;
paint->max_ascent = ascent;
paint->max_descent = descent;
paint->backtabs = NULL;
paint->highlight = highlight;
tmp = pos;
if (XawTextSourceAnchorAndEntity(ctx->text.source, pos,
&anchor, &entity)) {
pos = anchor->position + entity->offset + entity->length;
if ((paint->property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(paint->property->mask & XAW_TPROP_FONT))
font = paint->property->font;
else
font = sink->ascii_sink.font;
}
else {
if (anchor) {
while (entity && anchor->position + entity->offset < pos)
entity = entity->next;
if (entity)
pos = anchor->position + entity->offset;
else
pos = to;
}
else
pos = to;
font = sink->ascii_sink.font;
}
pos = XawMin(pos, to);
length = pos - tmp;
paint->text = XtMalloc(bufsiz = pos - tmp + 4);
paint->length = 0;
segment.x1 = x;
pos2 = tmp;
while (length > 0) {
pos2 = XawTextSourceRead(ctx->text.source, tmp, &block, length);
length = pos - pos2;
tmp = pos2;
for (i = 0; i < block.length; i++) {
unsigned char c = (unsigned char)block.ptr[i];
if (paint->length + 4 > bufsiz)
paint->text = XtRealloc(paint->text, bufsiz += 32);
paint->text[paint->length] = c;
if (c == '\n') {
x += CharWidth(sink, font, 0, ' ');
continue;
}
if (c == '\t') {
x += XTextWidth(font, paint->text, paint->length);
segment.x2 = x + CharWidth(sink, font, x, '\t');
if (XmuValidSegment(&segment)) {
if (!highlight && (paint->property &&
(paint->property->mask & XAW_TPROP_BACKGROUND))) {
if (ascent > font->ascent) {
scanline.y = y;
next.y = y + ascent - font->ascent;
XmuAreaOr(sink->text_sink.paint->clip, &area);
}
if (descent >= font->descent) {
scanline.y = y + ascent + font->descent;
next.y = scanline.y + descent - font->descent + 1;
XmuAreaOr(sink->text_sink.paint->clip, &area);
}
if (paint->backtabs == NULL)
paint->backtabs = XmuCreateArea();
scanline.y = y + ascent - font->ascent;
next.y = y + ascent + font->descent;
XmuAreaOr(paint->backtabs, &area);
}
else {
scanline.y = y;
next.y = ctx->text.lt.info[line + 1].y;
if (highlight) {
if (!sink->text_sink.paint->hightabs)
sink->text_sink.paint->hightabs =
XmuCreateArea();
XmuAreaOr(sink->text_sink.paint->hightabs, &area);
}
else
XmuAreaOr(sink->text_sink.paint->clip, &area);
}
}
paint->width = segment.x2 - segment.x1;
x = segment.x1 = segment.x2;
if (paint->length == 0) {
paint->x = x;
continue;
}
paint->text = XtRealloc(paint->text, paint->length);
property = paint->property;
paint = XtNew(XawTextPaintStruct);
paint->next = sink->text_sink.paint->paint;
sink->text_sink.paint->paint = paint;
paint->x = x;
paint->y = y + ascent;
paint->property = property;
paint->max_ascent = ascent;
paint->max_descent = descent;
paint->backtabs = NULL;
paint->highlight = highlight;
paint->text = XtMalloc(bufsiz = pos - tmp - length +
block.length - i + 4);
paint->length = 0;
continue;
}
if ((c & 0177) < XawSP || c == 0177) {
if (sink->ascii_sink.display_nonprinting) {
if (c > 0177) {
paint->text[paint->length++] = '\\';
paint->text[paint->length++] = ((c >> 6) & 7) + '0';
paint->text[paint->length++] = ((c >> 3) & 7) + '0';
paint->text[paint->length] = (c & 7) + '0';
}
else {
c |= 0100;
paint->text[paint->length++] = '^';
paint->text[paint->length] = c == 0177 ? '?' : c;
}
}
else
paint->text[paint->length] = ' ';
}
paint->length++;
}
}
x += XTextWidth(font, paint->text, paint->length);
segment.x2 = x;
if (XmuValidSegment(&segment)) {
/* erase only what really is needed */
/*if (!highlight || (paint->property &&
(paint->property->mask & XAW_TPROP_BACKGROUND))) {
if (ascent > font->ascent) {
scanline.y = y;
next.y = y + ascent - font->ascent;
XmuAreaOr(sink->text_sink.paint->clip, &area);
}
if (descent > font->descent) {
scanline.y = y + ascent + font->descent;
next.y = scanline.y + descent - font->descent;
XmuAreaOr(sink->text_sink.paint->clip, &area);
}
}
else*/ {
scanline.y = y;
next.y = ctx->text.lt.info[line + 1].y;
XmuAreaOr(sink->text_sink.paint->clip, &area);
}
}
paint->width = x - segment.x1;
}
xr = x;
/* pass 3: bearing clipping */
if (left < from) {
CalculateBearing(ctx, from - 1, xl, y, ascent, descent, highlight, True);
if (ctx->text.s.left < ctx->text.s.right) {
if (ctx->text.s.right == from)
CalculateBearing(ctx, from, xl, y, ascent, descent, True, False);
else if (ctx->text.s.left == from)
CalculateBearing(ctx, from, xl, y, ascent, descent, False, False);
}
}
right = XawMin(right, ctx->text.lastPos);
if (right >= to && to > from) {
if (to < right)
CalculateBearing(ctx, to, xr, y, ascent, descent, highlight, False);
if (ctx->text.s.left < ctx->text.s.right) {
if (ctx->text.s.right == to)
CalculateBearing(ctx, to - 1, xr, y, ascent, descent, False, True);
else if (ctx->text.s.left == to)
CalculateBearing(ctx, to - 1, xr, y, ascent, descent, True, True);
}
}
}
static int
qcmp_paint_struct(_Xconst void *left, _Xconst void *right)
{
return ((*(XawTextPaintStruct**)left)->property -
(*(XawTextPaintStruct**)right)->property);
}
static void
AsciiDoPaint(Widget w)
{
TextWidget ctx = (TextWidget)XtParent(w);
AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
XmuScanline *scan;
XmuSegment *seg;
XawTextPaintList *list = sink->text_sink.paint;
#if 0
XawTextPaintStruct *base, *head;
#endif
XawTextPaintStruct *paint = list->paint;
XawTextProperty *property;
XFontStruct *font = NULL;
XRectangle *rects;
int n_rects, i_rects;
GC gc;
Bool highlight;
XRectangle rect;
int width, height, line_width = -1;
XGCValues values;
/* pass 1: clear clipping areas */
/* XXX Don't use XDrawImageString because the font may be italic, and
will get incorrectly drawn. Probably, it could be a good idea to
check if this is the case, and do special processing. But this
will need to be checked if required. */
for (scan = list->clip->scanline; scan && scan->next; scan = scan->next)
for (seg = scan->segment; seg; seg = seg->next)
_XawTextSinkClearToBackground(ctx->text.sink,
seg->x1, scan->y,
seg->x2 - seg->x1,
scan->next->y - scan->y);
/* pass 2: optimize drawing list to avoid too much GC change requests */
/* XXX this assumes there will not exist entities drawn over other
entities. */
#if 0
while (paint) {
base = paint;
head = paint->next;
while (head) {
if (head->property == paint->property) {
base->next = head->next;
head->next = paint->next;
paint->next = head;
paint = head;
}
base = head;
head = head->next;
}
paint = paint->next;
}
#endif
if (paint && paint->next) {
XawTextPaintStruct **paints;
int i = 0, n_paints = 0;
while (paint) {
paint = paint->next;
++n_paints;
}
paints = (XawTextPaintStruct**)
XtMalloc(n_paints * sizeof(XawTextPaintStruct));
paint = list->paint;
while (paint) {
paints[i++] = paint;
paint = paint->next;
}
qsort((void*)paints, n_paints, sizeof(XawTextPaintStruct*),
qcmp_paint_struct);
list->paint = paints[0];
for (i = 0; i < n_paints - 1; i++)
paints[i]->next = paints[i + 1];
paints[i]->next = NULL;
XtFree((XtPointer)paints);
}
/* pass 3: clip gc */
gc = sink->ascii_sink.normgc;
rect.x = ctx->text.r_margin.left;
rect.y = ctx->text.r_margin.top;
width = (int)XtWidth(ctx) - RHMargins(ctx);
height = (int)XtHeight(ctx) - RVMargins(ctx);
rect.width = width;
rect.height = height;
if (width >= 0 && height >= 0)
XSetClipRectangles(XtDisplay((Widget)ctx), gc,
0, 0, &rect, 1, Unsorted);
else
XSetClipMask(XtDisplay((Widget)ctx), gc, None);
/* pass 4: draw backgrounds */
paint = list->paint;
property = NULL;
rects = NULL;
i_rects = n_rects = 0;
while (paint) {
if (paint->property && (paint->property->mask & XAW_TPROP_BACKGROUND)) {
if (property != paint->property) {
if (i_rects)
XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc,
rects, i_rects);
i_rects = 0;
property = paint->property;
if (property->mask & XAW_TPROP_FONT)
font = property->font;
else
font = sink->ascii_sink.font;
XSetForeground(XtDisplay(ctx), gc, property->background);
}
if (i_rects <= n_rects)
rects = (XRectangle*)
XtRealloc((XtPointer)rects, sizeof(XRectangle) *
++n_rects);
rects[i_rects].x = paint->x;
rects[i_rects].y = paint->y - font->ascent;
rects[i_rects].width = paint->width;
rects[i_rects++].height = font->ascent + font->descent;
if (paint->backtabs) {
for (scan = paint->backtabs->scanline; scan && scan->next;
scan = scan->next)
for (seg = scan->segment; seg; seg = seg->next) {
if (i_rects <= n_rects)
rects = (XRectangle*)
XtRealloc((XtPointer)rects, sizeof(XRectangle) *
++n_rects);
rects[i_rects].x = seg->x1;
rects[i_rects].y = scan->y;
rects[i_rects].width = seg->x2 - seg->x1;
rects[i_rects++].height = scan->next->y - scan->y;
}
}
}
paint = paint->next;
}
if (i_rects)
XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc, rects, i_rects);
paint = list->paint;
i_rects = 0;
while (paint) {
if (paint->highlight) {
if (i_rects == 0)
XSetForeground(XtDisplay(ctx), gc, sink->text_sink.cursor_color);
if (i_rects <= n_rects)
rects = (XRectangle*)
XtRealloc((XtPointer)rects, sizeof(XRectangle) *
++n_rects);
rects[i_rects].x = paint->x;
rects[i_rects].y = paint->y - paint->max_ascent;
rects[i_rects].width = paint->width;
rects[i_rects++].height = paint->max_ascent + paint->max_descent + 1;
}
paint = paint->next;
}
if (list->hightabs) {
for (scan = list->hightabs->scanline; scan && scan->next;
scan = scan->next)
for (seg = scan->segment; seg; seg = seg->next) {
if (i_rects == 0)
XSetForeground(XtDisplay(ctx), gc,
sink->text_sink.cursor_color);
if (i_rects <= n_rects)
rects = (XRectangle*)
XtRealloc((XtPointer)rects, sizeof(XRectangle) *
++n_rects);
rects[i_rects].x = seg->x1;
rects[i_rects].y = scan->y;
rects[i_rects].width = seg->x2 - seg->x1;
rects[i_rects++].height = scan->next->y - scan->y;
}
}
if (i_rects)
XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc, rects, i_rects);
if (rects)
XtFree((XtPointer)rects);
/* pass 5: draw text! */
paint = list->paint;
if (paint && (property = paint->property) == NULL) {
font = sink->ascii_sink.font;
XSetFont(XtDisplay(ctx), gc, font->fid);
if (!paint->highlight)
XSetForeground(XtDisplay(ctx), gc, sink->text_sink.foreground);
}
else
property = NULL;
highlight = False;
while (paint) {
if (!highlight && paint->highlight)
XSetForeground(XtDisplay(ctx), gc, sink->text_sink.background);
if (highlight || paint->highlight || paint->property != property) {
if (!paint->property || !(paint->property->mask & XAW_TPROP_FONT))
font = sink->ascii_sink.font;
else
font = paint->property->font;
XSetFont(XtDisplay(ctx), gc, font->fid);
if (!paint->highlight) {
if (!paint->property ||
!(paint->property->mask & XAW_TPROP_FOREGROUND))
XSetForeground(XtDisplay(ctx), gc,
sink->text_sink.foreground);
else
XSetForeground(XtDisplay(ctx), gc,
paint->property->foreground);
}
highlight = paint->highlight;
property = paint->property;
}
if (paint->x < XtWidth(ctx) && paint->x + paint->width > 0) {
XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, paint->x, paint->y,
paint->text, paint->length);
if (property) {
if (property->mask & XAW_TPROP_UNDERLINE) {
if (line_width != property->underline_thickness) {
values.line_width = line_width =
property->underline_thickness;
XChangeGC(XtDisplay(ctx), gc, GCLineWidth, &values);
}
XDrawLine(XtDisplay(ctx), XtWindow(ctx), gc, paint->x,
paint->y + property->underline_position,
paint->x + paint->width,
paint->y + property->underline_position);
}
if (property->mask & XAW_TPROP_OVERSTRIKE) {
if (line_width != property->underline_thickness) {
values.line_width = line_width =
property->underline_thickness;
XChangeGC(XtDisplay(ctx), gc, GCLineWidth, &values);
}
XDrawLine(XtDisplay(ctx), XtWindow(ctx), gc, paint->x,
paint->y - (font->ascent>>1) + (font->descent>>1),
paint->x + paint->width,
paint->y - (font->ascent>>1) + (font->descent>>1));
}
}
}
paint = paint->next;
}
/* pass 6: bearing clipping */
/* dont care on order of drawing or caching of state (by now) */
paint = list->bearings;
while (paint) {
XRectangle rect;
if (paint->highlight)
XSetForeground(XtDisplay(ctx), gc, sink->text_sink.background);
if (!paint->property || !(paint->property->mask & XAW_TPROP_FONT))
font = sink->ascii_sink.font;
else
font = paint->property->font;
XSetFont(XtDisplay(ctx), gc, font->fid);
if (!paint->highlight) {
if (!paint->property ||
!(paint->property->mask & XAW_TPROP_FOREGROUND))
XSetForeground(XtDisplay(ctx), gc, sink->text_sink.foreground);
else
XSetForeground(XtDisplay(ctx), gc, paint->property->foreground);
}
if (paint->x < XtWidth(ctx) && paint->x + paint->width > 0) {
rect.x = paint->x + paint->width;
rect.width = XawAbs(paint->width); /* more than enough */
rect.y = paint->y - font->ascent;
rect.height = rect.y + font->ascent + font->descent;
XSetClipRectangles(XtDisplay((Widget)ctx), gc,
0, 0, &rect, 1, Unsorted);
XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, paint->x, paint->y,
paint->text, paint->length);
}
paint = paint->next;
}
}
#endif
/*
* Function:
* PaintText
*
* Parameters:
* w - text sink object
* gc - gc to paint text with
* x - location to paint the text
* y - ""
* buf - buffer and length of text to paint.
* len - ""
* clear_bg - clear background before drawing ?
*
* Description:
* Actually paints the text into the window.
*
* Returns:
* the width of the text painted
*/
static unsigned int
PaintText(Widget w, GC gc, int x, int y, char *buf, int len, Bool clear_bg)
{
AsciiSinkObject sink = (AsciiSinkObject)w;
TextWidget ctx = (TextWidget)XtParent(w);
int width = XTextWidth(sink->ascii_sink.font, buf, len);
if ((x > XtWidth(ctx)) || width <= -x) /* Don't draw if we can't see it */
return (width);
if (clear_bg) {
_XawTextSinkClearToBackground(w, x, y - sink->ascii_sink.font->ascent,
width, sink->ascii_sink.font->ascent
+ sink->ascii_sink.font->descent);
XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, x, y, buf, len);
}
else
XDrawImageString(XtDisplay(ctx), XtWindow(ctx), gc, x, y, buf, len);
return (width);
}
static void
DisplayText(Widget w, int x, int y,
XawTextPosition pos1, XawTextPosition pos2, Bool highlight)
{
TextWidget ctx = (TextWidget)XtParent(w);
AsciiSinkObject sink = (AsciiSinkObject)w;
XFontStruct *font = sink->ascii_sink.font;
Widget source = XawTextGetSource(XtParent(w));
unsigned char buf[260];
int j, k;
XawTextBlock blk;
GC gc, invgc, tabgc;
int max_x;
Bool clear_bg;
if (!sink->ascii_sink.echo || !ctx->text.lt.lines)
return;
max_x = (int)XtWidth(ctx) - ctx->text.r_margin.right;
clear_bg = !highlight && ctx->core.background_pixmap != XtUnspecifiedPixmap;
gc = highlight ? sink->ascii_sink.invgc : sink->ascii_sink.normgc;
invgc = highlight ? sink->ascii_sink.normgc : sink->ascii_sink.invgc;
if (highlight && sink->ascii_sink.xorgc)
tabgc = sink->ascii_sink.xorgc;
else
tabgc = invgc;
y += sink->ascii_sink.font->ascent;
for (j = 0; pos1 < pos2;) {
pos1 = XawTextSourceRead(source, pos1, &blk, pos2 - pos1);
for (k = 0; k < blk.length; k++) {
if (j >= sizeof(buf) - 4) { /* buffer full, dump the text */
if ((x += PaintText(w, gc, x, y, (char*)buf, j, clear_bg))
>= max_x)
return;
j = 0;
}
buf[j] = blk.ptr[k];
if (buf[j] == XawLF) /* line feeds ('\n') are not printed */
continue;
else if (buf[j] == '\t') {
int width;
if (j != 0
&& (x += PaintText(w, gc, x, y, (char*)buf, j, clear_bg))
>= max_x)
return;
if ((width = CharWidth(sink, font, x, '\t')) > -x) {
if (clear_bg)
_XawTextSinkClearToBackground(w, x, y-font->ascent, width,
font->ascent+font->descent);
else
XFillRectangle(XtDisplayOfObject(w), XtWindowOfObject(w),
tabgc, x, y - font->ascent, width,
font->ascent + font->descent);
}
if ((x += width) >= max_x)
return;
j = -1;
}
else if ((buf[j] & 0177) < XawSP || buf[j] == 0177) {
if (sink->ascii_sink.display_nonprinting) {
unsigned char c = buf[j];
if (c > 0177) {
buf[j++] = '\\';
buf[j++] = ((c >> 6) & 7) + '0';
buf[j++] = ((c >> 3) & 7) + '0';
buf[j] = (c & 7) + '0';
}
else {
c |= 0100;
buf[j++] = '^';
buf[j] = c == 0177 ? '?' : c;
}
}
else
buf[j] = ' ';
}
j++;
}
}
if (j > 0)
(void)PaintText(w, gc, x, y, (char*)buf, j, clear_bg);
}
/*
* Function:
* GetCursorBounds
*
* Parameters:
* w - text sink object
* rect - X rectangle to return the cursor bounds
*
* Description:
* Returns the size and location of the cursor.
*/
static void
GetCursorBounds(Widget w, XRectangle *rect)
{
AsciiSinkObject sink = (AsciiSinkObject)w;
XFontStruct *font = sink->ascii_sink.font;
unsigned char ch;
#ifndef OLDXAW
TextWidget ctx = (TextWidget)XtParent(w);
XawTextBlock block;
XawTextAnchor *anchor;
XawTextEntity *entity;
XawTextProperty *property;
if (XawTextSourceAnchorAndEntity(XawTextGetSource(XtParent(w)),
sink->ascii_sink.cursor_position,
&anchor, &entity)) {
if ((property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
font = property->font;
}
(void)XawTextSourceRead(XawTextGetSource((Widget)ctx),
ctx->text.insertPos, &block, 1);
if (!block.length || block.ptr[0] == '\n' || block.ptr[0] == '\t')
ch = ' ';
else if ((*((unsigned char*)block.ptr) & 0177) < XawSP ||
*(unsigned char*)block.ptr == 0177) {
if (sink->ascii_sink.display_nonprinting)
ch = *((unsigned char*)block.ptr) > 0177 ? '\\' : '^';
else
ch = ' ';
}
else
ch = *(unsigned char*)block.ptr;
#else
ch = ' ';
#endif
rect->width = CharWidth(sink, font, 0, ch);
rect->height = font->descent + font->ascent + 1;
rect->x = sink->ascii_sink.cursor_x;
rect->y = sink->ascii_sink.cursor_y - font->ascent;
}
/* this function is required to support diferent fonts and correctly place
* the cursor. There are better ways to calculate the base line, but there is
* no place/code (yet) to store this information.
*/
static int
FindCursorY(TextWidget ctx, XawTextPosition position)
{
int y, line, ascent;
AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
#ifndef OLDXAW
XawTextAnchor *anchor;
XawTextEntity *entity;
XawTextProperty *property;
XawTextPosition left, right;
#endif
for (line = 0; line < ctx->text.lt.lines; line++)
if (position < ctx->text.lt.info[line + 1].position)
break;
y = ctx->text.lt.info[line].y;
#ifndef OLDXAW
ascent = 0;
left = ctx->text.lt.info[line].position;
right = ctx->text.lt.info[line + 1].position;
right = XawMin(right, ctx->text.lastPos + 1);
while (left < right) {
if (XawTextSourceAnchorAndEntity(ctx->text.source, left,
&anchor, &entity)) {
if ((property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
ascent = XawMax(property->font->ascent, ascent);
else
ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
left = anchor->position + entity->offset + entity->length;
}
else if (anchor) {
ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
while (entity) {
XawTextPosition tmp = anchor->position + entity->offset + entity->length;
if (tmp > left && tmp < right) {
left = tmp;
if ((property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
ascent = XawMax(property->font->ascent, ascent);
else
ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
}
entity = entity->next;
}
if (entity == NULL)
break;
}
else {
ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
break;
}
}
if (!ascent)
ascent = sink->ascii_sink.font->ascent;
#else
ascent = sink->ascii_sink.font->ascent;
#endif
return (y + ascent);
}
static void
InsertCursor(Widget w, int x, int y, XawTextInsertState state)
{
AsciiSinkObject sink = (AsciiSinkObject)w;
XFontStruct *font = sink->ascii_sink.font;
TextWidget ctx = (TextWidget)XtParent(w);
XawTextPosition position = XawTextGetInsertionPoint((Widget)ctx);
Boolean overflow = (x & 0xffff8000) != 0;
#ifndef OLDXAW
XawTextAnchor *anchor;
XawTextEntity *entity;
XawTextProperty *property;
#endif
if (XtIsRealized((Widget)ctx)) {
int fheight;
XawTextBlock block;
XawTextPosition selection_start, selection_end;
Boolean has_selection;
if (!sink->ascii_sink.echo) {
if (sink->ascii_sink.laststate != state) {
int width = CharWidth(sink, font, 0, ' ') - 1;
x = ctx->text.margin.left;
y = ctx->text.margin.top;
font = sink->ascii_sink.font;
fheight = font->ascent + font->descent;
if (state == XawisOn) {
if (ctx->text.hasfocus)
XFillRectangle(XtDisplay(ctx), XtWindow(ctx),
sink->ascii_sink.xorgc, x, y,
width + 1, fheight + 1);
else
XDrawRectangle(XtDisplay(ctx), XtWindow(ctx),
sink->ascii_sink.xorgc, x, y,
width, fheight);
}
else
_XawTextSinkClearToBackground(w, x, y,
width + 1, fheight + 1);
}
sink->ascii_sink.cursor_x = x;
sink->ascii_sink.cursor_y = y;
sink->ascii_sink.laststate = state;
return;
}
XawTextGetSelectionPos((Widget)ctx, &selection_start, &selection_end);
has_selection = selection_start != selection_end;
if (sink->ascii_sink.laststate != state) {
unsigned char ch;
#ifndef OLDXAW
if (XawTextSourceAnchorAndEntity(ctx->text.source,
position, &anchor, &entity) &&
(property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
font = property->font;
else
font = sink->ascii_sink.font;
#endif
fheight = font->ascent + font->descent;
(void)XawTextSourceRead(XawTextGetSource((Widget)ctx),
position, &block, 1);
if (!block.length || block.ptr[0] == '\n' || block.ptr[0] == '\t')
ch = ' ';
else if ((*((unsigned char*)block.ptr) & 0177) < XawSP
|| *(unsigned char*)block.ptr == 0177) {
if (sink->ascii_sink.display_nonprinting)
ch = *((unsigned char*)block.ptr) > 0177 ? '\\' : '^';
else
ch = ' ';
}
else
ch = *(unsigned char*)block.ptr;
y = FindCursorY(ctx, position);
if (ctx->text.hasfocus && !has_selection)
XFillRectangle(XtDisplay(ctx), XtWindow(ctx),
sink->ascii_sink.xorgc, x, y - font->ascent,
CharWidth(sink, font, 0, ch), fheight + 1);
else
XDrawRectangle(XtDisplay(ctx), XtWindow(ctx),
sink->ascii_sink.xorgc, x, y - font->ascent,
CharWidth(sink, font, 0, ch) - 1, fheight);
}
}
sink->ascii_sink.cursor_x = overflow ? -16384 : x;
sink->ascii_sink.cursor_y = y;
sink->ascii_sink.laststate = state;
sink->ascii_sink.cursor_position = position;
}
/*
* Given two positions, find the distance between them
*/
static void
FindDistance(Widget w, XawTextPosition fromPos, int fromx,
XawTextPosition toPos, int *resWidth,
XawTextPosition *resPos, int *resHeight)
{
#ifndef OLDXAW
AsciiSinkObject sink = (AsciiSinkObject)w;
TextWidget ctx = (TextWidget)XtParent(w);
XFontStruct *font = sink->ascii_sink.font;
Widget source = ctx->text.source;
XawTextPosition idx, pos;
unsigned char c;
XawTextBlock blk;
int i, rWidth, ascent = 0, descent = 0;
XawTextAnchor *anchor;
XawTextEntity *entity;
XawTextProperty *property;
Cardinal length;
Bool done = False;
pos = idx = fromPos;
rWidth = 0;
c = 0;
while (!done) {
if (XawTextSourceAnchorAndEntity(source, pos, &anchor, &entity)) {
length = anchor->position + entity->offset + entity->length;
length = XawMin(toPos, length) - pos;
if ((property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
font = property->font;
else
font = sink->ascii_sink.font;
}
else {
if (anchor) {
while (entity && anchor->position + entity->offset < pos)
entity = entity->next;
if (entity) {
length = anchor->position + entity->offset;
length = XawMin(toPos, length) - pos;
}
else
length = XawMin(toPos - pos, 4096);
}
else
length = XawMin(toPos - pos, 4096);
font = sink->ascii_sink.font;
}
ascent = XawMax(font->ascent, ascent);
descent = XawMax(font->descent, descent);
pos = XawTextSourceRead(source, pos, &blk, length);
if (blk.length == 0 && pos == idx) /* eof reached */
break;
idx = blk.firstPos;
for (i = 0; idx < toPos; i++, idx++) {
if (i >= blk.length)
break;
c = blk.ptr[i];
rWidth += CharWidth(sink, font, fromx + rWidth, c);
if (c == XawLF) {
idx++;
done = True;
break;
}
}
if (idx >= toPos)
break;
}
*resPos = idx;
*resWidth = rWidth;
*resHeight = ascent + descent + 1;
#else
AsciiSinkObject sink = (AsciiSinkObject)w;
TextWidget ctx = (TextWidget)XtParent(w);
XFontStruct *font = sink->ascii_sink.font;
Widget source = ctx->text.source;
XawTextPosition idx, pos;
unsigned char c;
XawTextBlock blk;
int i, rWidth;
pos = XawTextSourceRead(source, fromPos, &blk, toPos - fromPos);
rWidth = 0;
for (i = 0, idx = fromPos; idx < toPos; i++, idx++) {
if (i >= blk.length) {
i = 0;
pos = XawTextSourceRead(source, pos, &blk, toPos - pos);
if (blk.length == 0)
break;
}
c = blk.ptr[i];
rWidth += CharWidth(sink, font, fromx + rWidth, c);
if (c == XawLF) {
idx++;
break;
}
}
*resPos = idx;
*resWidth = rWidth;
*resHeight = font->ascent + font->descent + 1;
#endif
}
static void
FindPosition(Widget w, XawTextPosition fromPos, int fromx, int width,
Bool stopAtWordBreak, XawTextPosition *resPos,
int *resWidth, int *resHeight)
{
#ifndef OLDXAW
AsciiSinkObject sink = (AsciiSinkObject)w;
TextWidget ctx = (TextWidget)XtParent(w);
Widget source = ctx->text.source;
XFontStruct *font = sink->ascii_sink.font;
XawTextPosition idx, pos, whiteSpacePosition = 0;
int i, lastWidth, whiteSpaceWidth, rWidth, ascent = 0, descent = 0;
Boolean whiteSpaceSeen;
unsigned char c;
XawTextBlock blk;
XawTextAnchor *anchor;
XawTextEntity *entity;
XawTextProperty *property;
Cardinal length;
Bool done = False;
pos = idx = fromPos;
rWidth = lastWidth = whiteSpaceWidth = 0;
whiteSpaceSeen = False;
c = 0;
while (!done) {
font = sink->ascii_sink.font;
if (XawTextSourceAnchorAndEntity(source, pos, &anchor, &entity)) {
length = anchor->position + entity->offset + entity->length - pos;
if ((property = XawTextSinkGetProperty((Widget)sink,
entity->property)) != NULL &&
(property->mask & XAW_TPROP_FONT))
font = property->font;
}
else {
if (anchor) {
while (entity && anchor->position + entity->offset < pos)
entity = entity->next;
if (entity)
length = anchor->position + entity->offset - pos;
else
length = 4096;
}
else
length = 4096;
}
ascent = XawMax(font->ascent, ascent);
descent = XawMax(font->descent, descent);
pos = XawTextSourceRead(source, pos, &blk, length);
if (blk.length == 0 && pos == idx) /* eof reached */
break;
idx = blk.firstPos;
for (i = 0; rWidth <= width && i < blk.length; i++, idx++) {
c = blk.ptr[i];
lastWidth = rWidth;
rWidth += CharWidth(sink, font, fromx + rWidth, c);
if (c == XawLF) {
idx++;
done = True;
break;
}
else if ((c == XawSP || c == XawTAB) && rWidth <= width) {
whiteSpaceSeen = True;
whiteSpacePosition = idx;
whiteSpaceWidth = rWidth;
}
}
if (rWidth > width)
break;
}
if (rWidth > width && idx > fromPos) {
idx--;
rWidth = lastWidth;
if (stopAtWordBreak && whiteSpaceSeen) {
idx = whiteSpacePosition + 1;
rWidth = whiteSpaceWidth;
}
}
if (idx >= ctx->text.lastPos && c != XawLF)
idx = ctx->text.lastPos + 1;
*resPos = idx;
*resWidth = rWidth;
*resHeight = ascent + descent + 1;
#else
AsciiSinkObject sink = (AsciiSinkObject)w;
TextWidget ctx = (TextWidget)XtParent(w);
Widget source = ctx->text.source;
XFontStruct *font = sink->ascii_sink.font;
XawTextPosition idx, pos, whiteSpacePosition = 0;
int i, lastWidth, whiteSpaceWidth, rWidth;
Boolean whiteSpaceSeen;
unsigned char c;
XawTextBlock blk;
pos = XawTextSourceRead(source, fromPos, &blk, BUFSIZ);
rWidth = lastWidth = whiteSpaceWidth = 0;
whiteSpaceSeen = False;
c = 0;
for (i = 0, idx = fromPos; rWidth <= width; i++, idx++) {
if (i >= blk.length) {
i = 0;
pos = XawTextSourceRead(source, pos, &blk, BUFSIZ);
if (blk.length == 0)
break;
}
c = blk.ptr[i];
lastWidth = rWidth;
rWidth += CharWidth(sink, font, fromx + rWidth, c);
if (c == XawLF) {
idx++;
break;
}
else if ((c == XawSP || c == XawTAB) && rWidth <= width) {
whiteSpaceSeen = True;
whiteSpacePosition = idx;
whiteSpaceWidth = rWidth;
}
}
if (rWidth > width && idx > fromPos) {
idx--;
rWidth = lastWidth;
if (stopAtWordBreak && whiteSpaceSeen) {
idx = whiteSpacePosition + 1;
rWidth = whiteSpaceWidth;
}
}
if (idx >= ctx->text.lastPos && c != XawLF)
idx = ctx->text.lastPos + 1;
*resPos = idx;
*resWidth = rWidth;
*resHeight = font->ascent + font->descent + 1;
#endif
}
static void
Resolve(Widget w, XawTextPosition pos, int fromx, int width,
XawTextPosition *pos_return)
{
int resWidth, resHeight;
Widget source = XawTextGetSource(XtParent(w));
FindPosition(w, pos, fromx, width, False, pos_return, &resWidth, &resHeight);
if (*pos_return > GETLASTPOS)
*pos_return = GETLASTPOS;
}
static void
GetGC(AsciiSinkObject sink)
{
XtGCMask valuemask = (GCFont | GCGraphicsExposures | GCClipXOrigin |
GCForeground | GCBackground);
XGCValues values;
/* XXX We dont want do share a gc that will change the clip-mask */
values.clip_x_origin = (long)sink;
values.clip_mask = None;
values.font = sink->ascii_sink.font->fid;
values.graphics_exposures = False;
values.foreground = sink->text_sink.foreground;
values.background = sink->text_sink.background;
sink->ascii_sink.normgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
GCClipMask | GCFont | GCForeground |
GCBackground, 0);
values.foreground = sink->text_sink.background;
#ifndef OLDXAW
values.background = sink->text_sink.cursor_color;
#else
values.background = sink->text_sink.foreground;
#endif
sink->ascii_sink.invgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
GCClipMask | GCFont, 0);
valuemask |= GCFunction;
values.function = GXxor;
#ifndef OLDXAW
values.foreground = sink->text_sink.background ^ sink->text_sink.cursor_color;
#else
values.foreground = sink->text_sink.background ^ sink->text_sink.foreground;
#endif
values.background = 0L;
sink->ascii_sink.xorgc = XtAllocateGC((Widget)sink, 0, valuemask,
&values, GCClipMask | GCFont, 0);
XawAsciiSinkResize((Widget)sink);
}
/* Function:
* XawAsciiSinkInitialize
*
* Parameters:
* request - the requested and new values for the object instance
* cnew - ""
*
* Description:
* Initializes the TextSink Object.
*/
/*ARGSUSED*/
static void
XawAsciiSinkInitialize(Widget request, Widget cnew,
ArgList args, Cardinal *num_args)
{
AsciiSinkObject sink = (AsciiSinkObject)cnew;
GetGC(sink);
if (!sink->ascii_sink.font) XtError("Aborting: no font found\n");
sink->ascii_sink.cursor_position = 0;
sink->ascii_sink.laststate = XawisOff;
sink->ascii_sink.cursor_x = sink->ascii_sink.cursor_y = 0;
}
/*
* Function:
* XawAsciiSinkDestroy
*
* Parameters:
* w - AsciiSink Object
*
* Description:
* This function cleans up when the object is destroyed.
*/
static void
XawAsciiSinkDestroy(Widget w)
{
AsciiSinkObject sink = (AsciiSinkObject)w;
XtReleaseGC(w, sink->ascii_sink.normgc);
XtReleaseGC(w, sink->ascii_sink.invgc);
XtReleaseGC(w, sink->ascii_sink.xorgc);
sink->ascii_sink.normgc =
sink->ascii_sink.invgc =
sink->ascii_sink.xorgc = NULL;
}
static void
XawAsciiSinkResize(Widget w)
{
TextWidget ctx = (TextWidget)XtParent(w);
AsciiSinkObject sink = (AsciiSinkObject)w;
XRectangle rect;
int width, height;
if (w->core.widget_class != asciiSinkObjectClass)
return;
rect.x = ctx->text.r_margin.left;
rect.y = ctx->text.r_margin.top;
width = (int)XtWidth(ctx) - RHMargins(ctx);
height = (int)XtHeight(ctx) - RVMargins(ctx);
rect.width = width;
rect.height = height;
if (sink->ascii_sink.normgc) {
if (width >= 0 && height >= 0)
XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.normgc,
0, 0, &rect, 1, Unsorted);
else
XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.normgc, None);
}
if (sink->ascii_sink.invgc) {
if (width >= 0 && height >= 0)
XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.invgc,
0, 0, &rect, 1, Unsorted);
else
XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.invgc, None);
}
if (sink->ascii_sink.xorgc) {
if (width >= 0 && height >= 0)
XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.xorgc,
0, 0, &rect, 1, Unsorted);
else
XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.xorgc, None);
}
}
/*
* Function:
* XawAsciiSinkSetValues
*
* Parameters:
* current - current state of the object
* request - what was requested
* cnew - what the object will become
*
* Description:
* Sets the values for the AsciiSink.
*
* Returns:
* True if redisplay is needed
*/
/*ARGSUSED*/
static Boolean
XawAsciiSinkSetValues(Widget current, Widget request, Widget cnew,
ArgList args, Cardinal *num_args)
{
AsciiSinkObject w = (AsciiSinkObject)cnew;
AsciiSinkObject old_w = (AsciiSinkObject)current;
if (w->ascii_sink.font != old_w->ascii_sink.font
|| w->text_sink.background != old_w->text_sink.background
|| w->text_sink.foreground != old_w->text_sink.foreground
#ifndef OLDXAW
|| w->text_sink.cursor_color != old_w->text_sink.cursor_color
|| w->text_sink.properties != old_w->text_sink.properties
#endif
) {
#ifdef OLDXAW
XtReleaseGC(cnew, w->ascii_sink.normgc);
XtReleaseGC(cnew, w->ascii_sink.invgc);
XtReleaseGC(cnew, w->ascii_sink.xorgc);
GetGC(w);
#endif
((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
}
else if (w->ascii_sink.echo != old_w->ascii_sink.echo
|| w->ascii_sink.display_nonprinting
!= old_w->ascii_sink.display_nonprinting)
((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
#ifndef OLDXAW
if (w->text_sink.properties != old_w->text_sink.properties) {
XawTextProperty *property =
XawTextSinkGetProperty(cnew, XrmStringToQuark("default"));
if (property) {
if (property->mask & XAW_TPROP_FONT)
w->ascii_sink.font = property->font;
if (property->mask & XAW_TPROP_FOREGROUND)
w->text_sink.foreground = property->foreground;
if (property->mask & XAW_TPROP_BACKGROUND)
w->text_sink.background = property->background;
}
}
#endif
return (False);
}
/*
* Function:
* MaxLines
*
* Parameters:
* w - AsciiSink Object
* height - height to fit lines into
*
* Description:
* Finds the Maximum number of lines that will fit in a given height.
*
* Returns:
* The number of lines that will fit
*/
/*ARGSUSED*/
static int
MaxLines(Widget w, unsigned int height)
{
AsciiSinkObject sink = (AsciiSinkObject)w;
int font_height;
font_height = sink->ascii_sink.font->ascent + sink->ascii_sink.font->descent + 1;
return ((int)height / font_height);
}
/*
* Function:
* MaxHeight
*
* Parameters:
* w - AsciiSink Object
* lines - number of lines
*
* Description:
* Finds the Minium height that will contain a given number lines.
*
* Returns:
* the height
*/
static int
MaxHeight(Widget w, int lines)
{
AsciiSinkObject sink = (AsciiSinkObject)w;
return (lines * (sink->ascii_sink.font->ascent +
sink->ascii_sink.font->descent + 1));
}
/*
* Function:
* SetTabs
*
* Parameters:
* w - AsciiSink Object
* tab_count - number of tabs in the list
* tabs - text positions of the tabs
*
* Description:
* Sets the Tab stops.
*/
static void
SetTabs(Widget w, int tab_count, short *tabs)
{
AsciiSinkObject sink = (AsciiSinkObject)w;
int i;
Atom XA_FIGURE_WIDTH;
unsigned long figure_width = 0;
XFontStruct *font = sink->ascii_sink.font;
/*
* Find the figure width of the current font
*/
XA_FIGURE_WIDTH = XInternAtom(XtDisplayOfObject(w), "FIGURE_WIDTH", False);
if (XA_FIGURE_WIDTH != None
&& (!XGetFontProperty(font, XA_FIGURE_WIDTH, &figure_width)
|| figure_width == 0)) {
if (font->per_char && font->min_char_or_byte2 <= '$'
&& font->max_char_or_byte2 >= '$')
figure_width = font->per_char['$' - font->min_char_or_byte2].width;
else
figure_width = font->max_bounds.width;
}
if (tab_count > sink->text_sink.tab_count) {
sink->text_sink.tabs = (Position *)
XtRealloc((char*)sink->text_sink.tabs, tab_count * sizeof(Position));
sink->text_sink.char_tabs = (short *)
XtRealloc((char*)sink->text_sink.char_tabs, tab_count * sizeof(short));
}
for (i = 0 ; i < tab_count ; i++) {
sink->text_sink.tabs[i] = tabs[i] * figure_width;
sink->text_sink.char_tabs[i] = tabs[i];
}
sink->text_sink.tab_count = tab_count;
#ifndef NO_TAB_FIX
{
TextWidget ctx = (TextWidget)XtParent(w);
ctx->text.redisplay_needed = True;
_XawTextBuildLineTable(ctx, ctx->text.lt.top, True);
}
#endif
}
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