/*********************************************************** 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. ******************************************************************/ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include #include #include #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 }