/* $Xorg: MultiSink.c,v 1.3 2000/08/17 19:45:34 cpqbld Exp $ */ /* * Copyright 1991 by OMRON Corporation * * 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, and that the name of OMRON not be used in advertising * or publicity pertaining to distribution of the software without specific, * written prior permission. OMRON makes no representations about the * suitability of this software for any purpose. It is provided "as is" * without express or implied warranty. * * OMRON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL OMRON 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 * TORTUOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. * * Author: Li Yuhong OMRON Corporation */ /*********************************************************** Copyright 1987, 1988, 1994, 1998 The Open Group All Rights Reserved. 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/MultiSink.c,v 1.19 2001/01/17 19:42:27 dawes Exp $ */ #include #include #include #include #include #include #include #include "XawI18n.h" #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 XawMultiSinkClassInitialize(void); static void XawMultiSinkInitialize(Widget, Widget, ArgList, Cardinal*); static void XawMultiSinkDestroy(Widget); static void XawMultiSinkResize(Widget); static Boolean XawMultiSinkSetValues(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*); /* * Prototypes */ static void GetGC(MultiSinkObject); static int CharWidth(MultiSinkObject, XFontSet, int, wchar_t); static unsigned int PaintText(Widget w, GC gc, int x, int y, wchar_t *buf, int len, Bool); /* * Defined in TextSink.c */ void _XawTextSinkClearToBackground(Widget, int, int, unsigned, unsigned); /* * Initialization */ static wchar_t wspace[2]; #define offset(field) XtOffsetOf(MultiSinkRec, multi_sink.field) static XtResource resources[] = { { XtNfontSet, XtCFontSet, XtRFontSet, sizeof(XFontSet), offset(fontset), XtRString, XtDefaultFontSet }, { 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) MultiSinkClassRec multiSinkClassRec = { /* object */ { (WidgetClass)SuperClass, /* superclass */ "MultiSink", /* class_name */ sizeof(MultiSinkRec), /* widget_size */ XawMultiSinkClassInitialize, /* class_initialize */ NULL, /* class_part_initialize */ False, /* class_inited */ XawMultiSinkInitialize, /* 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 */ XawMultiSinkDestroy, /* destroy */ (XtProc)XawMultiSinkResize, /* obj8 */ NULL, /* obj9 */ XawMultiSinkSetValues, /* 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 */ }, /* multi_sink */ { NULL, /* extension */ } }; WidgetClass multiSinkObjectClass = (WidgetClass)&multiSinkClassRec; /* * Implementation */ static int CharWidth(MultiSinkObject sink, XFontSet fontset, int x, wchar_t c) { int width = 0; if (c == _Xaw_atowc(XawLF)) return (0); if (c == _Xaw_atowc(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 < *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 (XwcTextEscapement(fontset, &c, 1) == 0) { if (sink->multi_sink.display_nonprinting) c = _Xaw_atowc('@'); else c = _Xaw_atowc(XawSP); } /* * if more efficiency(suppose one column is one ASCII char) width = XwcGetColumn(fontset->font_charset, fontset->num_of_fonts, c) * fontset->font_struct_list[0]->min_bounds.width; * * WARNING: Very Slower!!! * * Li Yuhong. */ width = XwcTextEscapement(fontset, &c, 1); return (width); } /* * Function: * PaintText * * Parameters: * w - text sink object * gc - gc to paint text * 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, wchar_t *buf, int len, Bool clear_bg) { MultiSinkObject sink = (MultiSinkObject)w; TextWidget ctx = (TextWidget)XtParent(w); XFontSet fontset = sink->multi_sink.fontset; unsigned int width = XwcTextEscapement(fontset, buf, len); if (((int)width) <= -x) /* Don't draw if we can't see it */ return (width); if (clear_bg) { XFontSetExtents *ext = XExtentsOfFontSet(fontset); _XawTextSinkClearToBackground(w, x, y - abs(ext->max_logical_extent.y), width, ext->max_logical_extent.height); XwcDrawString(XtDisplay(ctx), XtWindow(ctx), fontset, gc, x, y, buf, len); } else XwcDrawImageString(XtDisplay(ctx), XtWindow(ctx), fontset, gc, x, y, buf, len); return (width); } /* Sink Object Functions */ /* * This function does not know about drawing more than one line of text */ static void DisplayText(Widget w, int x, int y, XawTextPosition pos1, XawTextPosition pos2, Bool highlight) { TextWidget ctx = (TextWidget)XtParent(w); MultiSinkObject sink = (MultiSinkObject)w; XFontSet fontset = sink->multi_sink.fontset; Widget source = XawTextGetSource(XtParent(w)); wchar_t buf[256]; XFontSetExtents *ext = XExtentsOfFontSet(fontset); int j, k; XawTextBlock blk; GC gc, invgc, tabgc; int max_x; Bool clear_bg; if (!sink->multi_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->multi_sink.invgc : sink->multi_sink.normgc; invgc = highlight ? sink->multi_sink.normgc : sink->multi_sink.invgc; if (highlight && sink->multi_sink.xorgc) tabgc = sink->multi_sink.xorgc; else tabgc = invgc; y += abs(ext->max_logical_extent.y); for (j = 0; pos1 < pos2;) { pos1 = XawTextSourceRead(source, pos1, &blk, (int) pos2 - pos1); for (k = 0; k < blk.length; k++) { if ((unsigned) j >= (sizeof(buf) / sizeof(wchar_t)) - 1) { /* buffer full, dump the text */ if ((x += PaintText(w, gc, x, y, buf, j, clear_bg)) >= max_x) return; j = 0; } buf[j] = ((wchar_t *)blk.ptr)[k]; if (buf[j] == _Xaw_atowc(XawLF)) continue; else if (buf[j] == _Xaw_atowc(XawTAB)) { unsigned int width; if (j != 0 && (x += PaintText(w, gc, x, y, buf, j, clear_bg)) >= max_x) return; width = CharWidth(sink, fontset, x, _Xaw_atowc(XawTAB)); if (clear_bg) _XawTextSinkClearToBackground(w, x, y - abs(ext->max_logical_extent.y), width, ext->max_logical_extent.height); else XFillRectangle(XtDisplayOfObject(w), XtWindowOfObject(w), tabgc, x, y - abs(ext->max_logical_extent.y), width, ext->max_logical_extent.height); x += width; j = -1; } else if (XwcTextEscapement(sink->multi_sink.fontset, &buf[j], 1) == 0) { if (sink->multi_sink.display_nonprinting) buf[j] = _Xaw_atowc('@'); else buf[j] = _Xaw_atowc(XawSP); } j++; } } if (j > 0) (void)PaintText(w, gc, x, y, 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) { MultiSinkObject sink = (MultiSinkObject)w; rect->width = CharWidth(sink, sink->multi_sink.fontset, 0, _Xaw_atowc(XawSP)); rect->height = (XExtentsOfFontSet(sink->multi_sink.fontset) ->max_logical_extent.height); rect->x = sink->multi_sink.cursor_x; rect->y = sink->multi_sink.cursor_y - (short)rect->height; } /* * The following procedure manages the "insert" cursor */ static void InsertCursor(Widget w, int x, int y, XawTextInsertState state) { MultiSinkObject sink = (MultiSinkObject)w; XFontSet fontset = sink->multi_sink.fontset; Widget ctx = XtParent(w); XawTextPosition position = XawTextGetInsertionPoint(ctx); if (XtIsRealized(ctx)) { int fheight, fdiff; XawTextBlock block; wchar_t c; XawTextPosition selection_start, selection_end; Boolean has_selection; XFontSetExtents *ext = XExtentsOfFontSet(fontset); XawTextGetSelectionPos((Widget)ctx, &selection_start, &selection_end); has_selection = selection_start != selection_end; fheight = ext->max_logical_extent.height; fdiff = fheight - abs(ext->max_logical_extent.y); if ((sink->multi_sink.cursor_position != position || state == XawisOff) && !has_selection && sink->multi_sink.laststate != XawisOff) { wchar_t *ochar; (void)XawTextSourceRead(XawTextGetSource(ctx), sink->multi_sink.cursor_position, &block, 1); if (!block.length) ochar = NULL; else { c = ((wchar_t *)block.ptr)[0]; if (c == _Xaw_atowc(XawLF)) ochar = NULL; else if (c == _Xaw_atowc(XawTAB)) ochar = wspace; else ochar = (wchar_t *)block.ptr; } if (!ochar) _XawTextSinkClearToBackground(w, sink->multi_sink.cursor_x, (sink->multi_sink.cursor_y - 1 - fheight), CharWidth(sink, fontset, 0, wspace[0]), fheight); else { if (XwcTextEscapement(sink->multi_sink.fontset, ochar, 1) != 0) DisplayText(w, sink->multi_sink.cursor_x, sink->multi_sink.cursor_y - 1 - fheight, sink->multi_sink.cursor_position, sink->multi_sink.cursor_position + 1, False); else PaintText(w, sink->multi_sink.normgc, sink->multi_sink.cursor_x, sink->multi_sink.cursor_y - 1 - fdiff, ochar, 1, ctx->core.background_pixmap != XtUnspecifiedPixmap); } } if (!has_selection && state != XawisOff) { wchar_t *nchar; Boolean focus = ((TextWidget)ctx)->text.hasfocus; (void)XawTextSourceRead(XawTextGetSource(ctx), position, &block, 1); c = ((wchar_t *)block.ptr)[0]; if (!block.length || c == _Xaw_atowc(XawLF) || c == _Xaw_atowc(XawTAB)) nchar = wspace; else nchar = (wchar_t *)block.ptr; if (focus) { if (XwcTextEscapement(sink->multi_sink.fontset, nchar, 1) != 0) XwcDrawImageString(XtDisplay(ctx), XtWindow(ctx), fontset, sink->multi_sink.invgc, x, (y - 1 - fdiff), nchar, 1); else DisplayText(w, x, y - 1 - fheight, position, position + 1, True); } else XDrawRectangle(XtDisplay(ctx), XtWindow(ctx), sink->multi_sink.xorgc ? sink->multi_sink.xorgc : sink->multi_sink.normgc, x, y - 1 - fheight, CharWidth(sink, fontset, 0, *nchar) - 1, fheight - 1); } } sink->multi_sink.cursor_x = x; sink->multi_sink.cursor_y = y; sink->multi_sink.laststate = state; sink->multi_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) { MultiSinkObject sink = (MultiSinkObject)w; XFontSet fontset = sink->multi_sink.fontset; TextWidget ctx = (TextWidget)XtParent(w); Widget source = ctx->text.source; XawTextPosition idx, pos; wchar_t c; XFontSetExtents *ext = XExtentsOfFontSet(fontset); 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; XawTextSourceRead(source, pos, &blk, toPos - pos); if (blk.length == 0) break; } c = ((wchar_t *)blk.ptr)[i]; rWidth += CharWidth(sink, fontset, fromx + rWidth, c); if (c == _Xaw_atowc(XawLF)) { idx++; break; } } *resPos = idx; *resWidth = rWidth; *resHeight = ext->max_logical_extent.height; } static void FindPosition(Widget w, XawTextPosition fromPos, int fromx, int width, Bool stopAtWordBreak, XawTextPosition *resPos, int *resWidth, int *resHeight) { MultiSinkObject sink = (MultiSinkObject)w; TextWidget ctx = (TextWidget)XtParent(w); Widget source = ctx->text.source; XFontSet fontset = sink->multi_sink.fontset; XawTextPosition idx, pos, whiteSpacePosition = 0; int i, lastWidth, whiteSpaceWidth, rWidth; Boolean whiteSpaceSeen; wchar_t c; XFontSetExtents *ext = XExtentsOfFontSet(fontset); 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 = ((wchar_t *)blk.ptr)[i]; lastWidth = rWidth; rWidth += CharWidth(sink, fontset, fromx + rWidth, c); if (c == _Xaw_atowc(XawLF)) { idx++; break; } else if ((c == _Xaw_atowc(XawSP) || c == _Xaw_atowc(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 != _Xaw_atowc(XawLF)) idx = ctx->text.lastPos + 1; *resPos = idx; *resWidth = rWidth; *resHeight = ext->max_logical_extent.height; } 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(MultiSinkObject sink) { XtGCMask valuemask = (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.graphics_exposures = False; values.foreground = sink->text_sink.foreground; values.background = sink->text_sink.background; sink->multi_sink.normgc = XtAllocateGC((Widget)sink, 0, valuemask, &values, GCFont | GCClipMask, 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->multi_sink.invgc = XtAllocateGC((Widget)sink, 0, valuemask, &values, GCFont | GCClipMask, 0); #ifndef OLDXAW if (sink->text_sink.cursor_color != sink->text_sink.foreground) { values.foreground = sink->text_sink.cursor_color; values.background = sink->text_sink.foreground; sink->multi_sink.xorgc = XtAllocateGC((Widget)sink, 0, valuemask, &values, GCFont | GCClipMask, 0); } else #endif /* OLDXAW */ sink->multi_sink.xorgc = NULL; XawMultiSinkResize((Widget)sink); } static void XawMultiSinkClassInitialize(void) { wspace[0] = _Xaw_atowc(XawSP); XawInitializeWidgetSet(); } /* * Function: * XawMultiSinkInitialize * * Parameters: * request - requested and new values for the object instance * cnew - "" * * Description: * Initializes the TextSink Object. */ /* ARGSUSED */ static void XawMultiSinkInitialize(Widget request, Widget cnew, ArgList args, Cardinal *num_args) { MultiSinkObject sink = (MultiSinkObject)cnew; GetGC(sink); sink->multi_sink.cursor_position = 0; sink->multi_sink.laststate = XawisOff; sink->multi_sink.cursor_x = sink->multi_sink.cursor_y = 0; } /* * Function: * XawMultiSinkDestroy * * Parameters: * w - MultiSink Object * * Description: * This function cleans up when the object is destroyed. */ static void XawMultiSinkDestroy(Widget w) { MultiSinkObject sink = (MultiSinkObject)w; XtReleaseGC(w, sink->multi_sink.normgc); XtReleaseGC(w, sink->multi_sink.invgc); if (sink->multi_sink.xorgc) XtReleaseGC(w, sink->multi_sink.xorgc); sink->multi_sink.normgc = sink->multi_sink.invgc = sink->multi_sink.xorgc = NULL; } static void XawMultiSinkResize(Widget w) { TextWidget ctx = (TextWidget)XtParent(w); MultiSinkObject sink = (MultiSinkObject)w; XRectangle rect; int width, height; if (w->core.widget_class != multiSinkObjectClass) return; rect.x = ctx->text.r_margin.left; rect.y = ctx->text.r_margin.top; width = (int)XtWidth(ctx) - (int)ctx->text.r_margin.right - (int)ctx->text.r_margin.left; height = (int)XtHeight(ctx) - (int)ctx->text.r_margin.top - (int)ctx->text.r_margin.bottom; rect.width = width; rect.height = height; if (sink->multi_sink.normgc) { if (width >= 0 && height >= 0) XSetClipRectangles(XtDisplay((Widget)ctx), sink->multi_sink.normgc, 0, 0, &rect, 1, Unsorted); else XSetClipMask(XtDisplay((Widget)ctx), sink->multi_sink.normgc, None); } if (sink->multi_sink.invgc) { if (width >= 0 && height >= 0) XSetClipRectangles(XtDisplay((Widget)ctx), sink->multi_sink.invgc, 0, 0, &rect, 1, Unsorted); else XSetClipMask(XtDisplay((Widget)ctx), sink->multi_sink.invgc, None); } if (sink->multi_sink.xorgc) { if (width >= 0 && height >= 0) XSetClipRectangles(XtDisplay((Widget)ctx), sink->multi_sink.xorgc, 0, 0, &rect, 1, Unsorted); else XSetClipMask(XtDisplay((Widget)ctx), sink->multi_sink.xorgc, None); } } /* * Function: * XawMultiSinkSetValues * * Parameters: * current - current state of the object * request - what was requested * cnew - what the object will become * * Description: * Sets the values for the MultiSink. * * Returns: * True if redisplay is needed */ /*ARGSUSED*/ static Boolean XawMultiSinkSetValues(Widget current, Widget request, Widget cnew, ArgList args, Cardinal *num_args) { MultiSinkObject w = (MultiSinkObject)cnew; MultiSinkObject old_w = (MultiSinkObject)current; /* Font set is not in the GC! Do not make a new GC when font set changes! */ if (w->multi_sink.fontset != old_w->multi_sink.fontset) { ((TextWidget)XtParent(cnew))->text.redisplay_needed = True; #ifndef NO_TAB_FIX SetTabs((Widget)w, w->text_sink.tab_count, w->text_sink.char_tabs); #endif } if (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 #endif ) { XtReleaseGC(cnew, w->multi_sink.normgc); XtReleaseGC(cnew, w->multi_sink.invgc); if (w->multi_sink.xorgc) XtReleaseGC(cnew, w->multi_sink.xorgc); GetGC(w); ((TextWidget)XtParent(cnew))->text.redisplay_needed = True; } else if (w->multi_sink.echo != old_w->multi_sink.echo || w->multi_sink.display_nonprinting != old_w->multi_sink.display_nonprinting) ((TextWidget)XtParent(cnew))->text.redisplay_needed = True; return (False); } /* * Function: * MaxLines * * Parameters: * w - MultiSink 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) { MultiSinkObject sink = (MultiSinkObject)w; int font_height; XFontSetExtents *ext = XExtentsOfFontSet(sink->multi_sink.fontset); font_height = ext->max_logical_extent.height; return (height / font_height); } /* * Function: * MaxHeight * * Parameters: * w - MultiSink Object * lines - number of lines * * Description: * Finds the Minium height that will contain a given number lines. * Returns: * The height */ /*ARGSUSED*/ static int MaxHeight(Widget w, int lines) { MultiSinkObject sink = (MultiSinkObject)w; XFontSetExtents *ext = XExtentsOfFontSet(sink->multi_sink.fontset); return (lines * ext->max_logical_extent.height); } /* * Function: * SetTabs * * Arguments: * w - MultiSink 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) { MultiSinkObject sink = (MultiSinkObject)w; int i; Atom XA_FIGURE_WIDTH; unsigned long figure_width = 0; XFontStruct *font; /* * Bug: * Suppose the first font of fontset stores the unit of column. * * By Li Yuhong, Mar. 14, 1991 */ { XFontStruct **f_list; char **f_name; (void)XFontsOfFontSet(sink->multi_sink.fontset, &f_list, &f_name); font = f_list[0]; } /* * 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, (Cardinal)(tab_count * sizeof(Position))); sink->text_sink.char_tabs = (short *) XtRealloc((char *)sink->text_sink.char_tabs, (Cardinal)(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)XtParent(w))->text.redisplay_needed = True; #endif } void _XawMultiSinkPosToXY(Widget w, XawTextPosition pos, Position *x, Position *y) { MultiSinkObject sink = (MultiSinkObject)((TextWidget)w)->text.sink; XFontSetExtents *ext = XExtentsOfFontSet(sink->multi_sink.fontset); _XawTextPosToXY(w, pos, x, y); *y += abs(ext->max_logical_extent.y); }