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IABSD.fr/xenocara/lib/libXaw/src/Label.c
matthieu
- lib/libXaw/src/Label.c
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/*********************************************************** 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 <config.h> #endif #include <stdio.h> #include <ctype.h> #include <X11/IntrinsicP.h> #include <X11/StringDefs.h> #include <X11/Xos.h> #include <X11/Xmu/Converters.h> #include <X11/Xmu/Drawing.h> #include <X11/Xaw/LabelP.h> #include <X11/Xaw/XawInit.h> #include "Private.h" #define streq(a, b) (strcmp((a), (b)) == 0) #define MULTI_LINE_LABEL 32767 /* * Class Methods */ static void XawLabelClassInitialize(void); static void XawLabelDestroy(Widget); static void XawLabelInitialize(Widget, Widget, ArgList, Cardinal*); static XtGeometryResult XawLabelQueryGeometry(Widget, XtWidgetGeometry*, XtWidgetGeometry*); static void XawLabelRedisplay(Widget, XEvent*, Region); static void XawLabelResize(Widget); static Boolean XawLabelSetValues(Widget, Widget, Widget, ArgList, Cardinal*); /* * Prototypes */ static void compute_bitmap_offsets(LabelWidget); static void GetGrayGC(LabelWidget); static void GetNormalGC(LabelWidget); static void _Reposition(LabelWidget, unsigned int, unsigned int, Position*, Position*); static void set_bitmap_info(LabelWidget); static void SetTextWidthAndHeight(LabelWidget); /* * Initialization */ #define offset(field) XtOffsetOf(LabelRec, field) static XtResource resources[] = { { XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel), offset(label.foreground), XtRString, (XtPointer)XtDefaultForeground }, { XtNfont, XtCFont, XtRFontStruct, sizeof(XFontStruct*), offset(label.font), XtRString, (XtPointer)XtDefaultFont }, { XtNfontSet, XtCFontSet, XtRFontSet, sizeof(XFontSet), offset(label.fontset), XtRString, (XtPointer)XtDefaultFontSet }, { XtNlabel, XtCLabel, XtRString, sizeof(String), offset(label.label), XtRString, NULL }, { XtNencoding, XtCEncoding, XtRUnsignedChar, sizeof(unsigned char), offset(label.encoding), XtRImmediate, (XtPointer)XawTextEncoding8bit }, { XtNjustify, XtCJustify, XtRJustify, sizeof(XtJustify), offset(label.justify), XtRImmediate, (XtPointer)XtJustifyCenter }, { XtNinternalWidth, XtCWidth, XtRDimension, sizeof(Dimension), offset(label.internal_width), XtRImmediate, (XtPointer)4 }, { XtNinternalHeight, XtCHeight, XtRDimension, sizeof(Dimension), offset(label.internal_height), XtRImmediate, (XtPointer)2 }, { XtNleftBitmap, XtCLeftBitmap, XtRBitmap, sizeof(Pixmap), offset(label.left_bitmap), XtRImmediate, (XtPointer)None }, { XtNbitmap, XtCPixmap, XtRBitmap, sizeof(Pixmap), offset(label.pixmap), XtRImmediate, (XtPointer)None }, { XtNresize, XtCResize, XtRBoolean, sizeof(Boolean), offset(label.resize), XtRImmediate, (XtPointer)True }, { XtNlabelX, XtCPosition, XtRPosition, sizeof(Position), offset(label.label_x), XtRImmediate, (XtPointer)0 }, { XtNlabelY, XtCPosition, XtRPosition, sizeof(Position), offset(label.label_y), XtRImmediate, (XtPointer)0 }, }; #undef offset #define Superclass (&simpleClassRec) LabelClassRec labelClassRec = { /* core */ { (WidgetClass)&simpleClassRec, /* superclass */ "Label", /* class_name */ sizeof(LabelRec), /* widget_size */ XawLabelClassInitialize, /* class_initialize */ NULL, /* class_part_initialize */ False, /* class_inited */ XawLabelInitialize, /* initialize */ NULL, /* initialize_hook */ XtInheritRealize, /* realize */ NULL, /* actions */ 0, /* num_actions */ resources, /* resources */ XtNumber(resources), /* num_resources */ NULLQUARK, /* xrm_class */ True, /* compress_motion */ True, /* compress_exposure */ True, /* compress_enterleave */ False, /* visible_interest */ XawLabelDestroy, /* destroy */ XawLabelResize, /* resize */ XawLabelRedisplay, /* expose */ XawLabelSetValues, /* set_values */ NULL, /* set_values_hook */ XtInheritSetValuesAlmost, /* set_values_almost */ NULL, /* get_values_hook */ NULL, /* accept_focus */ XtVersion, /* version */ NULL, /* callback_private */ NULL, /* tm_table */ XawLabelQueryGeometry, /* query_geometry */ XtInheritDisplayAccelerator, /* display_accelerator */ NULL, /* extension */ }, /* simple */ { XtInheritChangeSensitive, /* change_sensitive */ #ifndef OLDXAW NULL, #endif }, /* label */ { NULL, /* extension */ } }; WidgetClass labelWidgetClass = (WidgetClass)&labelClassRec; /* * Implementation */ static void XawLabelClassInitialize(void) { XawInitializeWidgetSet(); XtAddConverter(XtRString, XtRJustify, XmuCvtStringToJustify, NULL, 0); XtSetTypeConverter(XtRJustify, XtRString, XmuCvtJustifyToString, NULL, 0, XtCacheNone, NULL); } /* * Calculate width and height of displayed text in pixels */ static void SetTextWidthAndHeight(LabelWidget lw) { XFontStruct *fs = lw->label.font; char *nl; if (lw->label.pixmap != None) { Window root; int x, y; unsigned int width, height, bw, depth; if (XGetGeometry(XtDisplay(lw), lw->label.pixmap, &root, &x, &y, &width, &height, &bw, &depth)) { lw->label.label_height = (Dimension)height; lw->label.label_width = (Dimension)width; lw->label.label_len = (Dimension)depth; return; } } if (lw->simple.international == True) { XFontSet fset = lw->label.fontset; XFontSetExtents *ext = XExtentsOfFontSet(fset); lw->label.label_height = ext->max_ink_extent.height; if (lw->label.label == NULL) { lw->label.label_len = 0; lw->label.label_width = 0; } else if ((nl = strchr(lw->label.label, '\n')) != NULL) { char *label; lw->label.label_len = MULTI_LINE_LABEL; lw->label.label_width = 0; for (label = lw->label.label; nl != NULL; nl = strchr(label, '\n')) { int width = XmbTextEscapement(fset, label, (int)(nl - label)); if (width > (int)lw->label.label_width) lw->label.label_width = (Dimension)width; label = nl + 1; if (*label) lw->label.label_height = (Dimension)(lw->label.label_height + ext->max_ink_extent.height); } if (*label) { int width = XmbTextEscapement(fset, label, (int)strlen(label)); if (width > (int)lw->label.label_width) lw->label.label_width = (Dimension)width; } } else { lw->label.label_len = (Dimension)strlen(lw->label.label); lw->label.label_width = (Dimension)XmbTextEscapement(fset, lw->label.label, lw->label.label_len); } } else { lw->label.label_height = (Dimension)(fs->max_bounds.ascent + fs->max_bounds.descent); if (lw->label.label == NULL) { lw->label.label_len = 0; lw->label.label_width = 0; } else if ((nl = strchr(lw->label.label, '\n')) != NULL) { char *label; lw->label.label_len = MULTI_LINE_LABEL; lw->label.label_width = 0; for (label = lw->label.label; nl != NULL; nl = strchr(label, '\n')) { int width; if (lw->label.encoding) width = XTextWidth16(fs, (XChar2b *)label, (int)(nl - label) / 2); else width = XTextWidth(fs, label, (int)(nl - label)); if (width > (int)lw->label.label_width) lw->label.label_width = (Dimension)width; label = nl + 1; if (*label) lw->label.label_height += (Dimension)(fs->max_bounds.ascent + fs->max_bounds.descent); } if (*label) { int width; if (lw->label.encoding) width = XTextWidth16(fs, (XChar2b *)label, (int)(strlen(label) / 2)); else width = XTextWidth(fs, label, (int)strlen(label)); if (width > (int) lw->label.label_width) lw->label.label_width = (Dimension)width; } } else { lw->label.label_len = (Dimension)strlen(lw->label.label); if (lw->label.encoding) lw->label.label_width = (Dimension)XTextWidth16(fs, (XChar2b *)lw->label.label, (int)lw->label.label_len / 2); else lw->label.label_width = (Dimension)XTextWidth(fs, lw->label.label, (int)lw->label.label_len); } } } static void GetNormalGC(LabelWidget lw) { XGCValues values = { .foreground = lw->label.foreground, .background = lw->core.background_pixel, .font = lw->label.font->fid, .graphics_exposures = False }; if (lw->simple.international == True) /* Since Xmb/wcDrawString eats the font, I must use XtAllocateGC */ lw->label.normal_GC = XtAllocateGC((Widget)lw, 0, GCForeground | GCBackground | GCGraphicsExposures, &values, GCFont, 0); else lw->label.normal_GC = XtGetGC((Widget)lw, GCForeground | GCBackground | GCFont | GCGraphicsExposures, &values); } static void GetGrayGC(LabelWidget lw) { XGCValues values = { .foreground = lw->label.foreground, .background = lw->core.background_pixel, .font = lw->label.font->fid, .fill_style = FillTiled, .tile = XmuCreateStippledPixmap(XtScreen((Widget)lw), lw->label.foreground, lw->core.background_pixel, lw->core.depth), .graphics_exposures = False }; lw->label.stipple = values.tile; if (lw->simple.international == True) /* Since Xmb/wcDrawString eats the font, I must use XtAllocateGC */ lw->label.gray_GC = XtAllocateGC((Widget)lw, 0, GCForeground | GCBackground | GCTile | GCFillStyle | GCGraphicsExposures, &values, GCFont, 0); else lw->label.gray_GC = XtGetGC((Widget)lw, GCForeground | GCBackground | GCFont | GCTile | GCFillStyle | GCGraphicsExposures, &values); } static void compute_bitmap_offsets(LabelWidget lw) { /* * bitmap will be eventually be displayed at * (internal_width, internal_height + lbm_y) */ if (lw->label.lbm_height != 0) lw->label.lbm_y = (int)((XtHeight(lw) - ((lw->label.internal_height * 2) + lw->label.lbm_height)) / 2); else lw->label.lbm_y = 0; } static void set_bitmap_info(LabelWidget lw) { Window root; int x, y; unsigned int bw, depth; if (!(lw->label.left_bitmap && XGetGeometry(XtDisplay(lw), lw->label.left_bitmap, &root, &x, &y, &lw->label.lbm_width, &lw->label.lbm_height, &bw, &depth))) lw->label.lbm_width = lw->label.lbm_height = 0; compute_bitmap_offsets(lw); } /*ARGSUSED*/ static void XawLabelInitialize(Widget request _X_UNUSED, Widget cnew, ArgList args _X_UNUSED, Cardinal *num_args _X_UNUSED) { LabelWidget lw = (LabelWidget)cnew; if (!lw->label.font) XtError("Aborting: no font found\n"); if (lw->simple.international && !lw->label.fontset) XtError("Aborting: no fontset found\n"); if (lw->label.label == NULL) lw->label.label = XtNewString(lw->core.name); else lw->label.label = XtNewString(lw->label.label); GetNormalGC(lw); GetGrayGC(lw); SetTextWidthAndHeight(lw); if (XtHeight(lw) == 0) XtHeight(lw) = (Dimension)(lw->label.label_height + 2 * lw->label.internal_height); set_bitmap_info(lw); /* need core.height */ if (XtWidth(lw) == 0) /* need label.lbm_width */ XtWidth(lw) = (Dimension)(lw->label.label_width + (unsigned)(2 * lw->label.internal_width) + LEFT_OFFSET(lw)); lw->label.label_x = lw->label.label_y = 0; (*XtClass(cnew)->core_class.resize)((Widget)lw); } /*ARGSUSED*/ static void XawLabelRedisplay(Widget gw, XEvent *event, Region region) { LabelWidget w = (LabelWidget)gw; GC gc; if (*Superclass->core_class.expose != NULL) (*Superclass->core_class.expose)(gw, event, region); gc = XtIsSensitive(gw) ? w->label.normal_GC : w->label.gray_GC; if (w->label.pixmap == None) { int len = w->label.label_len; char *label = w->label.label; Position y = (Position)(w->label.label_y + w->label.font->max_bounds.ascent); Position ksy = w->label.label_y; /* display left bitmap */ if (w->label.left_bitmap && w->label.lbm_width != 0) XCopyPlane (XtDisplay(gw), w->label.left_bitmap, XtWindow(gw), gc, 0, 0, w->label.lbm_width, w->label.lbm_height, w->label.internal_width, w->label.internal_height + w->label.lbm_y, 1L); if (w->simple.international == True) { XFontSetExtents *ext = XExtentsOfFontSet(w->label.fontset); ksy = (Position) (ksy + XawAbs(ext->max_ink_extent.y)); if (len == MULTI_LINE_LABEL) { char *nl; while ((nl = strchr(label, '\n')) != NULL) { XmbDrawString(XtDisplay(w), XtWindow(w), w->label.fontset, gc, w->label.label_x, ksy, label, (int)(nl - label)); ksy = (Position) (ksy + ext->max_ink_extent.height); label = nl + 1; } len = (int)strlen(label); } if (len) XmbDrawString(XtDisplay(w), XtWindow(w), w->label.fontset, gc, w->label.label_x, ksy, label, len); } else { if (len == MULTI_LINE_LABEL) { char *nl; while ((nl = strchr(label, '\n')) != NULL) { if (w->label.encoding) XDrawString16(XtDisplay(gw), XtWindow(gw), gc, w->label.label_x, y, (XChar2b *)label, (int)(nl - label) / 2); else XDrawString(XtDisplay(gw), XtWindow(gw), gc, w->label.label_x, y, label, (int)(nl - label)); y += (Position) (w->label.font->max_bounds.ascent + w->label.font->max_bounds.descent); label = nl + 1; } len = (int)strlen(label); } if (len) { if (w->label.encoding) XDrawString16(XtDisplay(gw), XtWindow(gw), gc, w->label.label_x, y, (XChar2b *)label, len / 2); else XDrawString(XtDisplay(gw), XtWindow(gw), gc, w->label.label_x, y, label, len); } } } else if (w->label.label_len == 1) XCopyPlane(XtDisplay(gw), w->label.pixmap, XtWindow(gw), gc, 0, 0, w->label.label_width, w->label.label_height, w->label.label_x, w->label.label_y, 1L); else XCopyArea(XtDisplay(gw), w->label.pixmap, XtWindow(gw), gc, 0, 0, w->label.label_width, w->label.label_height, w->label.label_x, w->label.label_y); } static void _Reposition(LabelWidget lw, unsigned int width, unsigned int height, Position *dx, Position *dy) { Position newPos; Position leftedge = (Position)(lw->label.internal_width + LEFT_OFFSET(lw)); switch (lw->label.justify) { case XtJustifyLeft: newPos = leftedge; break; case XtJustifyRight: newPos = (Position)(width - (unsigned)(lw->label.label_width + lw->label.internal_width)); break; case XtJustifyCenter: /*FALLTRHOUGH*/ default: newPos = (Position)((int)(width - lw->label.label_width) >> 1); break; } if (newPos < (Position)leftedge) newPos = leftedge; *dx = (Position)(newPos - lw->label.label_x); lw->label.label_x = newPos; newPos = (Position)((height - lw->label.label_height) >> 1); *dy = (Position)(newPos - lw->label.label_y); lw->label.label_y = newPos; } static void XawLabelResize(Widget w) { LabelWidget lw = (LabelWidget)w; Position dx, dy; _Reposition(lw, XtWidth(w), XtHeight(w), &dx, &dy); compute_bitmap_offsets(lw); } #define PIXMAP 0 #define WIDTH 1 #define HEIGHT 2 #define NUM_CHECKS 3 static Boolean XawLabelSetValues(Widget current, Widget request, Widget cnew, ArgList args, Cardinal *num_args) { LabelWidget curlw = (LabelWidget)current; LabelWidget reqlw = (LabelWidget)request; LabelWidget newlw = (LabelWidget)cnew; Boolean was_resized = False, redisplay = False, checks[NUM_CHECKS]; Cardinal i; for (i = 0; i < NUM_CHECKS; i++) checks[i] = False; for (i = 0; i < *num_args; i++) { if (streq(XtNbitmap, args[i].name)) checks[PIXMAP] = True; else if (streq(XtNwidth, args[i].name)) checks[WIDTH] = True; else if (streq(XtNheight, args[i].name)) checks[HEIGHT] = True; } if (newlw->label.label == NULL) newlw->label.label = (char *)newlw->core.name; /* * resize on bitmap change */ if (curlw->label.left_bitmap != newlw->label.left_bitmap) was_resized = True; if (curlw->label.encoding != newlw->label.encoding) was_resized = True; if (curlw->simple.international && curlw->label.fontset != newlw->label.fontset) was_resized = True; if (curlw->label.label != newlw->label.label) { if (curlw->label.label != curlw->core.name) XtFree((char *)curlw->label.label); if (newlw->label.label != newlw->core.name) newlw->label.label = XtNewString(newlw->label.label); was_resized = True; } if (was_resized || (curlw->label.font != newlw->label.font) || curlw->label.justify != newlw->label.justify || checks[PIXMAP]) { SetTextWidthAndHeight(newlw); was_resized = True; } /* recalculate the window size if something has changed */ if (newlw->label.resize && was_resized) { if (XtHeight(curlw) == XtHeight(reqlw) && !checks[HEIGHT]) XtHeight(newlw) = (Dimension)(newlw->label.label_height + (newlw->label.internal_height << 1)); set_bitmap_info(newlw); if (XtWidth(curlw) == XtWidth(reqlw) && !checks[WIDTH]) XtWidth(newlw) = (Dimension)(newlw->label.label_width + LEFT_OFFSET(newlw) + (unsigned)(newlw->label.internal_width << 1)); } if (curlw->label.foreground != newlw->label.foreground || curlw->core.background_pixel != newlw->core.background_pixel || curlw->label.font->fid != newlw->label.font->fid) { /* The Fontset is not in the GC - don't make a new GC if FS changes! */ XtReleaseGC(cnew, curlw->label.normal_GC); XtReleaseGC(cnew, curlw->label.gray_GC); XmuReleaseStippledPixmap(XtScreen(current), curlw->label.stipple); GetNormalGC(newlw); GetGrayGC(newlw); redisplay = True; } if (curlw->label.label_x != newlw->label.label_x || curlw->label.label_y != newlw->label.label_y) redisplay = True; if (curlw->label.internal_width != newlw->label.internal_width || curlw->label.internal_height != newlw->label.internal_height || was_resized) { /* Resize() will be called if geometry changes succeed */ Position dx, dy; _Reposition(newlw, XtWidth(curlw), XtHeight(curlw), &dx, &dy); } return (was_resized || redisplay || XtIsSensitive(current) != XtIsSensitive(cnew)); } static void XawLabelDestroy(Widget w) { LabelWidget lw = (LabelWidget)w; if (lw->label.label != lw->core.name) XtFree(lw->label.label); XtReleaseGC(w, lw->label.normal_GC); XtReleaseGC(w, lw->label.gray_GC); XmuReleaseStippledPixmap(XtScreen(w), lw->label.stipple); } static XtGeometryResult XawLabelQueryGeometry(Widget w, XtWidgetGeometry *intended, XtWidgetGeometry *preferred) { LabelWidget lw = (LabelWidget)w; preferred->request_mode = CWWidth | CWHeight; preferred->width = (Dimension)(lw->label.label_width + (unsigned)(lw->label.internal_width << 1) + LEFT_OFFSET(lw)); preferred->height = (Dimension)(lw->label.label_height + (lw->label.internal_height << 1)); if (((intended->request_mode & (CWWidth | CWHeight)) == (CWWidth | CWHeight)) && intended->width == preferred->width && intended->height == preferred->height) return (XtGeometryYes); else if (preferred->width == XtWidth(w) && preferred->height == XtHeight(w)) return (XtGeometryNo); return (XtGeometryAlmost); }