void TkpComputeButtonGeometry( register TkButton *butPtr) /* Button whose geometry may have changed. */ { int width, height, avgWidth, txtWidth, txtHeight; int haveImage = 0, haveText = 0; Tk_FontMetrics fm; butPtr->inset = butPtr->highlightWidth + butPtr->borderWidth; /* * Leave room for the default ring if needed. */ if (butPtr->defaultState != DEFAULT_DISABLED) { butPtr->inset += 5; } butPtr->indicatorSpace = 0; width = 0; height = 0; txtWidth = 0; txtHeight = 0; avgWidth = 0; if (butPtr->image != NULL) { Tk_SizeOfImage(butPtr->image, &width, &height); haveImage = 1; } else if (butPtr->bitmap != None) { Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height); haveImage = 1; } if (haveImage == 0 || butPtr->compound != COMPOUND_NONE) { Tk_FreeTextLayout(butPtr->textLayout); butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont, Tcl_GetString(butPtr->textPtr), -1, butPtr->wrapLength, butPtr->justify, 0, &butPtr->textWidth, &butPtr->textHeight); txtWidth = butPtr->textWidth; txtHeight = butPtr->textHeight; avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1); Tk_GetFontMetrics(butPtr->tkfont, &fm); haveText = (txtWidth != 0 && txtHeight != 0); } /* * If the button is compound (i.e., it shows both an image and text), the * new geometry is a combination of the image and text geometry. We only * honor the compound bit if the button has both text and an image, * because otherwise it is not really a compound button. */ if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) { switch ((enum compound) butPtr->compound) { case COMPOUND_TOP: case COMPOUND_BOTTOM: /* * Image is above or below text. */ height += txtHeight + butPtr->padY; width = (width > txtWidth ? width : txtWidth); break; case COMPOUND_LEFT: case COMPOUND_RIGHT: /* * Image is left or right of text. */ width += txtWidth + butPtr->padX; height = (height > txtHeight ? height : txtHeight); break; case COMPOUND_CENTER: /* * Image and text are superimposed. */ width = (width > txtWidth ? width : txtWidth); height = (height > txtHeight ? height : txtHeight); break; case COMPOUND_NONE: break; } if (butPtr->width > 0) { width = butPtr->width; } if (butPtr->height > 0) { height = butPtr->height; } if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) { butPtr->indicatorSpace = height; if (butPtr->type == TYPE_CHECK_BUTTON) { butPtr->indicatorDiameter = (65*height)/100; } else { butPtr->indicatorDiameter = (75*height)/100; } } width += 2*butPtr->padX; height += 2*butPtr->padY; } else { if (haveImage) { if (butPtr->width > 0) { width = butPtr->width; } if (butPtr->height > 0) { height = butPtr->height; } if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) { butPtr->indicatorSpace = height; if (butPtr->type == TYPE_CHECK_BUTTON) { butPtr->indicatorDiameter = (65*height)/100; } else { butPtr->indicatorDiameter = (75*height)/100; } } } else { width = txtWidth; height = txtHeight; if (butPtr->width > 0) { width = butPtr->width * avgWidth; } if (butPtr->height > 0) { height = butPtr->height * fm.linespace; } if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) { butPtr->indicatorDiameter = fm.linespace; if (butPtr->type == TYPE_CHECK_BUTTON) { butPtr->indicatorDiameter = (80*butPtr->indicatorDiameter)/100; } butPtr->indicatorSpace = butPtr->indicatorDiameter + avgWidth; } } } /* * When issuing the geometry request, add extra space for the indicator, * if any, and for the border and padding, plus two extra pixels so the * display can be offset by 1 pixel in either direction for the raised or * lowered effect. */ if ((butPtr->image == NULL) && (butPtr->bitmap == None)) { width += 2*butPtr->padX; height += 2*butPtr->padY; } if ((butPtr->type == TYPE_BUTTON) && !Tk_StrictMotif(butPtr->tkwin)) { width += 2; height += 2; } Tk_GeometryRequest(butPtr->tkwin, (int) (width + butPtr->indicatorSpace + 2*butPtr->inset), (int) (height + 2*butPtr->inset)); Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset); }
void TkpDisplayButton( ClientData clientData) /* Information about widget. */ { register TkButton *butPtr = (TkButton *) clientData; GC gc; Tk_3DBorder border; Pixmap pixmap; int x = 0; /* Initialization only needed to stop compiler * warning. */ int y, relief; Tk_Window tkwin = butPtr->tkwin; int width, height, fullWidth, fullHeight; int textXOffset, textYOffset; int haveImage = 0, haveText = 0; int offset; /* 1 means this is a button widget, so we * offset the text to make the button appear * to move up and down as the relief * changes. */ int imageWidth, imageHeight; int imageXOffset = 0, imageYOffset = 0; /* image information that will be used to * restrict disabled pixmap as well */ butPtr->flags &= ~REDRAW_PENDING; if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { return; } border = butPtr->normalBorder; if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) { gc = butPtr->disabledGC; } else if ((butPtr->state == STATE_ACTIVE) && !Tk_StrictMotif(butPtr->tkwin)) { gc = butPtr->activeTextGC; border = butPtr->activeBorder; } else { gc = butPtr->normalTextGC; } if ((butPtr->flags & SELECTED) && (butPtr->state != STATE_ACTIVE) && (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) { border = butPtr->selectBorder; } /* * Override the relief specified for the button if this is a checkbutton * or radiobutton and there's no indicator. The new relief is as follows: * If the button is select --> "sunken" * If relief==overrelief --> relief * Otherwise --> overrelief * * The effect we are trying to achieve is as follows: * * value mouse-over? --> relief * ------- ------------ -------- * off no flat * off yes raised * on no sunken * on yes sunken * * This is accomplished by configuring the checkbutton or radiobutton like * this: * * -indicatoron 0 -overrelief raised -offrelief flat * * Bindings (see library/button.tcl) will copy the -overrelief into * -relief on mouseover. Hence, we can tell if we are in mouse-over by * comparing relief against overRelief. This is an aweful kludge, but it * gives use the desired behavior while keeping the code backwards * compatible. */ relief = butPtr->relief; if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) { if (butPtr->flags & SELECTED) { relief = TK_RELIEF_SUNKEN; } else if (butPtr->overRelief != relief) { relief = butPtr->offRelief; } } offset = (butPtr->type == TYPE_BUTTON) && !Tk_StrictMotif(butPtr->tkwin); /* * In order to avoid screen flashes, this function redraws the button in a * pixmap, then copies the pixmap to the screen in a single operation. * This means that there's no point in time where the on-screen image has * been cleared. */ pixmap = Tk_GetPixmap(butPtr->display, Tk_WindowId(tkwin), Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin)); Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); /* * Display image or bitmap or text for button. */ if (butPtr->image != NULL) { Tk_SizeOfImage(butPtr->image, &width, &height); haveImage = 1; } else if (butPtr->bitmap != None) { Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height); haveImage = 1; } imageWidth = width; imageHeight = height; haveText = (butPtr->textWidth != 0 && butPtr->textHeight != 0); if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) { textXOffset = 0; textYOffset = 0; fullWidth = 0; fullHeight = 0; switch ((enum compound) butPtr->compound) { case COMPOUND_TOP: case COMPOUND_BOTTOM: /* * Image is above or below text. */ if (butPtr->compound == COMPOUND_TOP) { textYOffset = height + butPtr->padY; } else { imageYOffset = butPtr->textHeight + butPtr->padY; } fullHeight = height + butPtr->textHeight + butPtr->padY; fullWidth = (width > butPtr->textWidth ? width : butPtr->textWidth); textXOffset = (fullWidth - butPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; break; case COMPOUND_LEFT: case COMPOUND_RIGHT: /* * Image is left or right of text. */ if (butPtr->compound == COMPOUND_LEFT) { textXOffset = width + butPtr->padX; } else { imageXOffset = butPtr->textWidth + butPtr->padX; } fullWidth = butPtr->textWidth + butPtr->padX + width; fullHeight = (height > butPtr->textHeight ? height : butPtr->textHeight); textYOffset = (fullHeight - butPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; case COMPOUND_CENTER: /* * Image and text are superimposed. */ fullWidth = (width > butPtr->textWidth ? width : butPtr->textWidth); fullHeight = (height > butPtr->textHeight ? height : butPtr->textHeight); textXOffset = (fullWidth - butPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; textYOffset = (fullHeight - butPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; case COMPOUND_NONE: break; } TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY, butPtr->indicatorSpace + fullWidth, fullHeight, &x, &y); x += butPtr->indicatorSpace; x += offset; y += offset; if (relief == TK_RELIEF_RAISED) { x -= offset; y -= offset; } else if (relief == TK_RELIEF_SUNKEN) { x += offset; y += offset; } imageXOffset += x; imageYOffset += y; if (butPtr->image != NULL) { /* * Do boundary clipping, so that Tk_RedrawImage is passed valid * coordinates. [Bug 979239] */ if (imageXOffset < 0) { imageXOffset = 0; } if (imageYOffset < 0) { imageYOffset = 0; } if (width > Tk_Width(tkwin)) { width = Tk_Width(tkwin); } if (height > Tk_Height(tkwin)) { height = Tk_Height(tkwin); } if ((width + imageXOffset) > Tk_Width(tkwin)) { imageXOffset = Tk_Width(tkwin) - width; } if ((height + imageYOffset) > Tk_Height(tkwin)) { imageYOffset = Tk_Height(tkwin) - height; } if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) { Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else if ((butPtr->tristateImage != NULL) && (butPtr->flags & TRISTATED)) { Tk_RedrawImage(butPtr->tristateImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else { Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } } else { XSetClipOrigin(butPtr->display, gc, imageXOffset, imageYOffset); XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0, (unsigned int) width, (unsigned int) height, imageXOffset, imageYOffset, 1); XSetClipOrigin(butPtr->display, gc, 0, 0); } Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + textXOffset, y + textYOffset, 0, -1); Tk_UnderlineTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + textXOffset, y + textYOffset, butPtr->underline); y += fullHeight/2; } else { if (haveImage) { TkComputeAnchor(butPtr->anchor, tkwin, 0, 0, butPtr->indicatorSpace + width, height, &x, &y); x += butPtr->indicatorSpace; x += offset; y += offset; if (relief == TK_RELIEF_RAISED) { x -= offset; y -= offset; } else if (relief == TK_RELIEF_SUNKEN) { x += offset; y += offset; } imageXOffset += x; imageYOffset += y; if (butPtr->image != NULL) { /* * Do boundary clipping, so that Tk_RedrawImage is passed * valid coordinates. [Bug 979239] */ if (imageXOffset < 0) { imageXOffset = 0; } if (imageYOffset < 0) { imageYOffset = 0; } if (width > Tk_Width(tkwin)) { width = Tk_Width(tkwin); } if (height > Tk_Height(tkwin)) { height = Tk_Height(tkwin); } if ((width + imageXOffset) > Tk_Width(tkwin)) { imageXOffset = Tk_Width(tkwin) - width; } if ((height + imageYOffset) > Tk_Height(tkwin)) { imageYOffset = Tk_Height(tkwin) - height; } if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) { Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else if ((butPtr->tristateImage != NULL) && (butPtr->flags & TRISTATED)) { Tk_RedrawImage(butPtr->tristateImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else { Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } } else { XSetClipOrigin(butPtr->display, gc, x, y); XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0, (unsigned int) width, (unsigned int) height, x, y, 1); XSetClipOrigin(butPtr->display, gc, 0, 0); } y += height/2; } else { TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY, butPtr->indicatorSpace + butPtr->textWidth, butPtr->textHeight, &x, &y); x += butPtr->indicatorSpace; x += offset; y += offset; if (relief == TK_RELIEF_RAISED) { x -= offset; y -= offset; } else if (relief == TK_RELIEF_SUNKEN) { x += offset; y += offset; } Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x, y, 0, -1); Tk_UnderlineTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x, y, butPtr->underline); y += butPtr->textHeight/2; } } /* * Draw the indicator for check buttons and radio buttons. At this point, * x and y refer to the top-left corner of the text or image or bitmap. */ if ((butPtr->type == TYPE_CHECK_BUTTON) && butPtr->indicatorOn) { if (butPtr->indicatorDiameter > 2*butPtr->borderWidth) { TkBorder *selBorder = (TkBorder *) butPtr->selectBorder; XColor *selColor = NULL; if (selBorder != NULL) { selColor = selBorder->bgColorPtr; } x -= butPtr->indicatorSpace/2; y = Tk_Height(tkwin)/2; TkpDrawCheckIndicator(tkwin, butPtr->display, pixmap, x, y, border, butPtr->normalFg, selColor, butPtr->disabledFg, ((butPtr->flags & SELECTED) ? 1 : (butPtr->flags & TRISTATED) ? 2 : 0), (butPtr->state == STATE_DISABLED), CHECK_BUTTON); } } else if ((butPtr->type == TYPE_RADIO_BUTTON) && butPtr->indicatorOn) { if (butPtr->indicatorDiameter > 2*butPtr->borderWidth) { TkBorder *selBorder = (TkBorder *) butPtr->selectBorder; XColor *selColor = NULL; if (selBorder != NULL) { selColor = selBorder->bgColorPtr; } x -= butPtr->indicatorSpace/2; y = Tk_Height(tkwin)/2; TkpDrawCheckIndicator(tkwin, butPtr->display, pixmap, x, y, border, butPtr->normalFg, selColor, butPtr->disabledFg, ((butPtr->flags & SELECTED) ? 1 : (butPtr->flags & TRISTATED) ? 2 : 0), (butPtr->state == STATE_DISABLED), RADIO_BUTTON); } } /* * If the button is disabled with a stipple rather than a special * foreground color, generate the stippled effect. If the widget is * selected and we use a different background color when selected, must * temporarily modify the GC so the stippling is the right color. */ if ((butPtr->state == STATE_DISABLED) && ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) { if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn && (butPtr->selectBorder != NULL)) { XSetForeground(butPtr->display, butPtr->stippleGC, Tk_3DBorderColor(butPtr->selectBorder)->pixel); } /* * Stipple the whole button if no disabledFg was specified, otherwise * restrict stippling only to displayed image */ if (butPtr->disabledFg == NULL) { XFillRectangle(butPtr->display, pixmap, butPtr->stippleGC, 0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin)); } else { XFillRectangle(butPtr->display, pixmap, butPtr->stippleGC, imageXOffset, imageYOffset, (unsigned) imageWidth, (unsigned) imageHeight); } if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn && (butPtr->selectBorder != NULL)) { XSetForeground(butPtr->display, butPtr->stippleGC, Tk_3DBorderColor(butPtr->normalBorder)->pixel); } } /* * Draw the border and traversal highlight last. This way, if the button's * contents overflow they'll be covered up by the border. This code is * complicated by the possible combinations of focus highlight and default * rings. We draw the focus and highlight rings using the highlight border * and highlight foreground color. */ if (relief != TK_RELIEF_FLAT) { int inset = butPtr->highlightWidth; if (butPtr->defaultState == DEFAULT_ACTIVE) { /* * Draw the default ring with 2 pixels of space between the * default ring and the button and the default ring and the focus * ring. Note that we need to explicitly draw the space in the * highlightBorder color to ensure that we overwrite any overflow * text and/or a different button background color. */ Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset, inset, Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset, 2, TK_RELIEF_FLAT); inset += 2; Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset, inset, Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset, 1, TK_RELIEF_SUNKEN); inset++; Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset, inset, Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset, 2, TK_RELIEF_FLAT); inset += 2; } else if (butPtr->defaultState == DEFAULT_NORMAL) { /* * Leave room for the default ring and write over any text or * background color. */ Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 5, TK_RELIEF_FLAT); inset += 5; } /* * Draw the button border. */ Tk_Draw3DRectangle(tkwin, pixmap, border, inset, inset, Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset, butPtr->borderWidth, relief); } if (butPtr->highlightWidth > 0) { GC gc; if (butPtr->flags & GOT_FOCUS) { gc = Tk_GCForColor(butPtr->highlightColorPtr, pixmap); } else { gc = Tk_GCForColor(Tk_3DBorderColor(butPtr->highlightBorder), pixmap); } /* * Make sure the focus ring shrink-wraps the actual button, not the * padding space left for a default ring. */ if (butPtr->defaultState == DEFAULT_NORMAL) { TkDrawInsetFocusHighlight(tkwin, gc, butPtr->highlightWidth, pixmap, 5); } else { Tk_DrawFocusHighlight(tkwin, gc, butPtr->highlightWidth, pixmap); } } /* * Copy the information from the off-screen pixmap onto the screen, then * delete the pixmap. */ XCopyArea(butPtr->display, pixmap, Tk_WindowId(tkwin), butPtr->copyGC, 0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin), 0, 0); Tk_FreePixmap(butPtr->display, pixmap); }
void TkpDisplayMenuButton( ClientData clientData) /* Information about widget. */ { register TkMenuButton *mbPtr = (TkMenuButton *) clientData; GC gc; Tk_3DBorder border; Pixmap pixmap; int x = 0; /* Initialization needed only to stop compiler * warning. */ int y = 0; register Tk_Window tkwin = mbPtr->tkwin; int fullWidth, fullHeight; int textXOffset, textYOffset; int imageWidth, imageHeight; int imageXOffset, imageYOffset; int width = 0, height = 0; /* Image information that will be used to * restrict disabled pixmap as well */ int haveImage = 0, haveText = 0; mbPtr->flags &= ~REDRAW_PENDING; if ((mbPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { return; } if ((mbPtr->state == STATE_DISABLED) && (mbPtr->disabledFg != NULL)) { gc = mbPtr->disabledGC; border = mbPtr->normalBorder; } else if ((mbPtr->state == STATE_ACTIVE) && !Tk_StrictMotif(mbPtr->tkwin)) { gc = mbPtr->activeTextGC; border = mbPtr->activeBorder; } else { gc = mbPtr->normalTextGC; border = mbPtr->normalBorder; } if (mbPtr->image != None) { Tk_SizeOfImage(mbPtr->image, &width, &height); haveImage = 1; } else if (mbPtr->bitmap != None) { Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height); haveImage = 1; } imageWidth = width; imageHeight = height; haveText = (mbPtr->textWidth != 0 && mbPtr->textHeight != 0); /* * In order to avoid screen flashes, this function redraws the menu button * in a pixmap, then copies the pixmap to the screen in a single * operation. This means that there's no point in time where the on-sreen * image has been cleared. */ pixmap = Tk_GetPixmap(mbPtr->display, Tk_WindowId(tkwin), Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin)); Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); imageXOffset = 0; imageYOffset = 0; textXOffset = 0; textYOffset = 0; fullWidth = 0; fullHeight = 0; if (mbPtr->compound != COMPOUND_NONE && haveImage && haveText) { switch ((enum compound) mbPtr->compound) { case COMPOUND_TOP: case COMPOUND_BOTTOM: /* * Image is above or below text. */ if (mbPtr->compound == COMPOUND_TOP) { textYOffset = height + mbPtr->padY; } else { imageYOffset = mbPtr->textHeight + mbPtr->padY; } fullHeight = height + mbPtr->textHeight + mbPtr->padY; fullWidth = (width > mbPtr->textWidth ? width : mbPtr->textWidth); textXOffset = (fullWidth - mbPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; break; case COMPOUND_LEFT: case COMPOUND_RIGHT: /* * Image is left or right of text. */ if (mbPtr->compound == COMPOUND_LEFT) { textXOffset = width + mbPtr->padX; } else { imageXOffset = mbPtr->textWidth + mbPtr->padX; } fullWidth = mbPtr->textWidth + mbPtr->padX + width; fullHeight = (height > mbPtr->textHeight ? height : mbPtr->textHeight); textYOffset = (fullHeight - mbPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; case COMPOUND_CENTER: /* * Image and text are superimposed. */ fullWidth = (width > mbPtr->textWidth ? width : mbPtr->textWidth); fullHeight = (height > mbPtr->textHeight ? height : mbPtr->textHeight); textXOffset = (fullWidth - mbPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; textYOffset = (fullHeight - mbPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; case COMPOUND_NONE: break; } TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, mbPtr->indicatorWidth + fullWidth, fullHeight, &x, &y); imageXOffset += x; imageYOffset += y; if (mbPtr->image != NULL) { Tk_RedrawImage(mbPtr->image, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else if (mbPtr->bitmap != None) { XSetClipOrigin(mbPtr->display, gc, imageXOffset, imageYOffset); XCopyPlane(mbPtr->display, mbPtr->bitmap, pixmap, gc, 0, 0, (unsigned) width, (unsigned) height, imageXOffset, imageYOffset, 1); XSetClipOrigin(mbPtr->display, gc, 0, 0); } Tk_DrawTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout, x + textXOffset, y + textYOffset, 0, -1); Tk_UnderlineTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout, x + textXOffset, y + textYOffset, mbPtr->underline); } else if (haveImage) { TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, width + mbPtr->indicatorWidth, height, &x, &y); imageXOffset += x; imageYOffset += y; if (mbPtr->image != NULL) { Tk_RedrawImage(mbPtr->image, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else if (mbPtr->bitmap != None) { XSetClipOrigin(mbPtr->display, gc, x, y); XCopyPlane(mbPtr->display, mbPtr->bitmap, pixmap, gc, 0, 0, (unsigned) width, (unsigned) height, x, y, 1); XSetClipOrigin(mbPtr->display, gc, 0, 0); } } else { TkComputeAnchor(mbPtr->anchor, tkwin, mbPtr->padX, mbPtr->padY, mbPtr->textWidth + mbPtr->indicatorWidth, mbPtr->textHeight, &x, &y); Tk_DrawTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout, x + textXOffset, y + textYOffset, 0, -1); Tk_UnderlineTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout, x + textXOffset, y + textYOffset, mbPtr->underline); } /* * If the menu button is disabled with a stipple rather than a special * foreground color, generate the stippled effect. */ if ((mbPtr->state == STATE_DISABLED) && ((mbPtr->disabledFg == NULL) || (mbPtr->image != NULL))) { /* * Stipple the whole button if no disabledFg was specified, otherwise * restrict stippling only to displayed image */ if (mbPtr->disabledFg == NULL) { XFillRectangle(mbPtr->display, pixmap, mbPtr->stippleGC, mbPtr->inset, mbPtr->inset, (unsigned) (Tk_Width(tkwin) - 2*mbPtr->inset), (unsigned) (Tk_Height(tkwin) - 2*mbPtr->inset)); } else { XFillRectangle(mbPtr->display, pixmap, mbPtr->stippleGC, imageXOffset, imageYOffset, (unsigned) imageWidth, (unsigned) imageHeight); } } /* * Draw the cascade indicator for the menu button on the right side of the * window, if desired. */ if (mbPtr->indicatorOn) { int borderWidth; borderWidth = (mbPtr->indicatorHeight+1)/3; if (borderWidth < 1) { borderWidth = 1; } /*y += mbPtr->textHeight / 2;*/ Tk_Fill3DRectangle(tkwin, pixmap, border, Tk_Width(tkwin) - mbPtr->inset - mbPtr->indicatorWidth + mbPtr->indicatorHeight, ((int) (Tk_Height(tkwin) - mbPtr->indicatorHeight))/2, mbPtr->indicatorWidth - 2*mbPtr->indicatorHeight, mbPtr->indicatorHeight, borderWidth, TK_RELIEF_RAISED); } /* * Draw the border and traversal highlight last. This way, if the menu * button's contents overflow onto the border they'll be covered up by the * border. */ if (mbPtr->relief != TK_RELIEF_FLAT) { Tk_Draw3DRectangle(tkwin, pixmap, border, mbPtr->highlightWidth, mbPtr->highlightWidth, Tk_Width(tkwin) - 2*mbPtr->highlightWidth, Tk_Height(tkwin) - 2*mbPtr->highlightWidth, mbPtr->borderWidth, mbPtr->relief); } if (mbPtr->highlightWidth != 0) { GC gc; if (mbPtr->flags & GOT_FOCUS) { gc = Tk_GCForColor(mbPtr->highlightColorPtr, pixmap); } else { gc = Tk_GCForColor(mbPtr->highlightBgColorPtr, pixmap); } Tk_DrawFocusHighlight(tkwin, gc, mbPtr->highlightWidth, pixmap); } /* * Copy the information from the off-screen pixmap onto the screen, then * delete the pixmap. */ XCopyArea(mbPtr->display, pixmap, Tk_WindowId(tkwin), mbPtr->normalTextGC, 0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin), 0, 0); Tk_FreePixmap(mbPtr->display, pixmap); }
void TkpDisplayMenuButton( ClientData clientData) /* Information about widget. */ { TkMenuButton *mbPtr = (TkMenuButton *) clientData; GC gc; Tk_3DBorder border; int x = 0; /* Initialization needed only to stop * compiler warning. */ int y; Tk_Window tkwin = mbPtr->tkwin; int width, height; MacMenuButton * macMBPtr = (MacMenuButton *) mbPtr; GWorldPtr destPort; CGrafPtr saveWorld; GDHandle saveDevice; MacDrawable *macDraw; mbPtr->flags &= ~REDRAW_PENDING; if ((mbPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { return; } GetGWorld(&saveWorld, &saveDevice); destPort = TkMacGetDrawablePort(Tk_WindowId(tkwin)); SetGWorld(destPort, NULL); macDraw = (MacDrawable *) Tk_WindowId(tkwin); if ((mbPtr->state == tkDisabledUid) && (mbPtr->disabledFg != NULL)) { gc = mbPtr->disabledGC; } else if ((mbPtr->state == tkActiveUid) && !Tk_StrictMotif(mbPtr->tkwin)) { gc = mbPtr->activeTextGC; } else { gc = mbPtr->normalTextGC; } border = mbPtr->normalBorder; /* * In order to avoid screen flashes, this procedure redraws * the menu button in a pixmap, then copies the pixmap to the * screen in a single operation. This means that there's no * point in time where the on-sreen image has been cleared. */ Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin), border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); /* * Display image or bitmap or text for button. */ if (mbPtr->image != None) { Tk_SizeOfImage(mbPtr->image, &width, &height); imageOrBitmap: TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, width + mbPtr->indicatorWidth, height, &x, &y); if (mbPtr->image != NULL) { Tk_RedrawImage(mbPtr->image, 0, 0, width, height, Tk_WindowId(tkwin), x, y); } else { XCopyPlane(mbPtr->display, mbPtr->bitmap, Tk_WindowId(tkwin), gc, 0, 0, (unsigned) width, (unsigned) height, x, y, 1); } } else if (mbPtr->bitmap != None) { Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height); goto imageOrBitmap; } else { TkComputeAnchor(mbPtr->anchor, tkwin, mbPtr->padX, mbPtr->padY, mbPtr->textWidth + mbPtr->indicatorWidth, mbPtr->textHeight, &x, &y); Tk_DrawTextLayout(mbPtr->display, Tk_WindowId(tkwin), gc, mbPtr->textLayout, x, y, 0, -1); } /* * If the menu button is disabled with a stipple rather than a special * foreground color, generate the stippled effect. */ if ((mbPtr->state == tkDisabledUid) && ((mbPtr->disabledFg == NULL) || (mbPtr->image != NULL))) { XFillRectangle(mbPtr->display, Tk_WindowId(tkwin), mbPtr->disabledGC, mbPtr->inset, mbPtr->inset, (unsigned) (Tk_Width(tkwin) - 2*mbPtr->inset), (unsigned) (Tk_Height(tkwin) - 2*mbPtr->inset)); } /* * Draw the cascade indicator for the menu button on the * right side of the window, if desired. */ if (mbPtr->indicatorOn) { int w, h, i; Rect r; r.left = macDraw->xOff + Tk_Width(tkwin) - mbPtr->inset - mbPtr->indicatorWidth; r.top = macDraw->yOff + Tk_Height(tkwin)/2 - mbPtr->indicatorHeight/2; r.right = macDraw->xOff + Tk_Width(tkwin) - mbPtr->inset - kTriangleMargin; r.bottom = macDraw->yOff + Tk_Height(tkwin)/2 + mbPtr->indicatorHeight/2; h = mbPtr->indicatorHeight; w = mbPtr->indicatorWidth - 1 - kTriangleMargin; for (i = 0; i < h; i++) { MoveTo(r.left + i, r.top + i); LineTo(r.left + i + w, r.top + i); w -= 2; } } /* * Draw the border and traversal highlight last. This way, if the * menu button's contents overflow onto the border they'll be covered * up by the border. */ TkMacSetUpClippingRgn(Tk_WindowId(tkwin)); if (mbPtr->borderWidth > 0) { Rect r; r.left = macDraw->xOff + mbPtr->highlightWidth + mbPtr->borderWidth; r.top = macDraw->yOff + mbPtr->highlightWidth + mbPtr->borderWidth; r.right = macDraw->xOff + Tk_Width(tkwin) - mbPtr->highlightWidth - mbPtr->borderWidth; r.bottom = macDraw->yOff + Tk_Height(tkwin) - mbPtr->highlightWidth - mbPtr->borderWidth; FrameRect(&r); PenSize(mbPtr->borderWidth - 1, mbPtr->borderWidth - 1); MoveTo(r.right, r.top + kShadowOffset); LineTo(r.right, r.bottom); LineTo(r.left + kShadowOffset, r.bottom); } if (mbPtr->state == tkDisabledUid) { } if (mbPtr->highlightWidth != 0) { GC gc; if (mbPtr->flags & GOT_FOCUS) { gc = Tk_GCForColor(mbPtr->highlightColorPtr, Tk_WindowId(tkwin)); } else { gc = Tk_GCForColor(mbPtr->highlightBgColorPtr, Tk_WindowId(tkwin)); } Tk_DrawFocusHighlight(tkwin, gc, mbPtr->highlightWidth, Tk_WindowId(tkwin)); } SetGWorld(saveWorld, saveDevice); }
void TkpDisplayMenuButton( ClientData clientData) /* Information about widget. */ { TkMenuButton *mbPtr = (TkMenuButton *) clientData; GC gc; Tk_3DBorder border; int x = 0; /* Initialization needed only to stop * compiler warning. */ int y; Tk_Window tkwin = mbPtr->tkwin; int width, height, fullWidth, fullHeight; int imageXOffset, imageYOffset, textXOffset, textYOffset; int haveImage = 0, haveText = 0; MacMenuButton * macMBPtr = (MacMenuButton *) mbPtr; GWorldPtr destPort; CGrafPtr saveWorld; GDHandle saveDevice; MacDrawable *macDraw; mbPtr->flags &= ~REDRAW_PENDING; if ((mbPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { return; } GetGWorld(&saveWorld, &saveDevice); destPort = TkMacGetDrawablePort(Tk_WindowId(tkwin)); SetGWorld(destPort, NULL); macDraw = (MacDrawable *) Tk_WindowId(tkwin); if ((mbPtr->state == STATE_DISABLED) && (mbPtr->disabledFg != NULL)) { gc = mbPtr->disabledGC; } else if ((mbPtr->state == STATE_ACTIVE) && !Tk_StrictMotif(mbPtr->tkwin)) { gc = mbPtr->activeTextGC; } else { gc = mbPtr->normalTextGC; } border = mbPtr->normalBorder; if (mbPtr->image != None) { Tk_SizeOfImage(mbPtr->image, &width, &height); haveImage = 1; } else if (mbPtr->bitmap != None) { Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height); haveImage = 1; } haveText = (mbPtr->textWidth != 0 && mbPtr->textHeight != 0); /* * In order to avoid screen flashes, this procedure redraws * the menu button in a pixmap, then copies the pixmap to the * screen in a single operation. This means that there's no * point in time where the on-sreen image has been cleared. */ Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin), border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); imageXOffset = 0; imageYOffset = 0; textXOffset = 0; textYOffset = 0; fullWidth = 0; fullHeight = 0; if (mbPtr->compound != COMPOUND_NONE && haveImage && haveText) { switch ((enum compound) mbPtr->compound) { case COMPOUND_TOP: case COMPOUND_BOTTOM: { /* Image is above or below text */ if (mbPtr->compound == COMPOUND_TOP) { textYOffset = height + mbPtr->padY; } else { imageYOffset = mbPtr->textHeight + mbPtr->padY; } fullHeight = height + mbPtr->textHeight + mbPtr->padY; fullWidth = (width > mbPtr->textWidth ? width : mbPtr->textWidth); textXOffset = (fullWidth - mbPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; break; } case COMPOUND_LEFT: case COMPOUND_RIGHT: { /* Image is left or right of text */ if (mbPtr->compound == COMPOUND_LEFT) { textXOffset = width + mbPtr->padX; } else { imageXOffset = mbPtr->textWidth + mbPtr->padX; } fullWidth = mbPtr->textWidth + mbPtr->padX + width; fullHeight = (height > mbPtr->textHeight ? height : mbPtr->textHeight); textYOffset = (fullHeight - mbPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; } case COMPOUND_CENTER: { /* Image and text are superimposed */ fullWidth = (width > mbPtr->textWidth ? width : mbPtr->textWidth); fullHeight = (height > mbPtr->textHeight ? height : mbPtr->textHeight); textXOffset = (fullWidth - mbPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; textYOffset = (fullHeight - mbPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; } case COMPOUND_NONE: {break;} } TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, mbPtr->indicatorWidth + fullWidth, fullHeight, &x, &y); if (mbPtr->image != NULL) { Tk_RedrawImage(mbPtr->image, 0, 0, width, height, Tk_WindowId(tkwin), x + imageXOffset, y + imageYOffset); } if (mbPtr->bitmap != None) { XCopyPlane(mbPtr->display, mbPtr->bitmap, Tk_WindowId(tkwin), gc, 0, 0, (unsigned) width, (unsigned) height, x + imageXOffset, y + imageYOffset, 1); } if (haveText) { Tk_DrawTextLayout(mbPtr->display, Tk_WindowId(tkwin), gc, mbPtr->textLayout, x + textXOffset, y + textYOffset , 0, -1); Tk_UnderlineTextLayout(mbPtr->display, Tk_WindowId(tkwin), gc, mbPtr->textLayout, x + textXOffset, y + textYOffset , mbPtr->underline); } } else { if (mbPtr->image != NULL) { TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, width + mbPtr->indicatorWidth, height, &x, &y); Tk_RedrawImage(mbPtr->image, 0, 0, width, height, Tk_WindowId(tkwin), x + imageXOffset, y + imageYOffset); } else if (mbPtr->bitmap != None) { TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, width + mbPtr->indicatorWidth, height, &x, &y); XCopyPlane(mbPtr->display, mbPtr->bitmap, Tk_WindowId(tkwin), gc, 0, 0, (unsigned) width, (unsigned) height, x + imageXOffset, y + imageYOffset, 1); } else { TkComputeAnchor(mbPtr->anchor, tkwin, mbPtr->padX, mbPtr->padY, mbPtr->textWidth + mbPtr->indicatorWidth, mbPtr->textHeight, &x, &y); Tk_DrawTextLayout(mbPtr->display, Tk_WindowId(tkwin), gc, mbPtr->textLayout, x + textXOffset, y + textYOffset, 0, -1); Tk_UnderlineTextLayout(mbPtr->display, Tk_WindowId(tkwin), gc, mbPtr->textLayout, x + textXOffset, y + textYOffset , mbPtr->underline); } } #if 0 /* this is the original code */ /* * Display image or bitmap or text for button. */ if (mbPtr->image != None) { Tk_SizeOfImage(mbPtr->image, &width, &height); imageOrBitmap: TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, width + mbPtr->indicatorWidth, height, &x, &y); if (mbPtr->image != NULL) { Tk_RedrawImage(mbPtr->image, 0, 0, width, height, Tk_WindowId(tkwin), x, y); } else { XCopyPlane(mbPtr->display, mbPtr->bitmap, Tk_WindowId(tkwin), gc, 0, 0, (unsigned) width, (unsigned) height, x, y, 1); } } else if (mbPtr->bitmap != None) { Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height); goto imageOrBitmap; } else { TkComputeAnchor(mbPtr->anchor, tkwin, mbPtr->padX, mbPtr->padY, mbPtr->textWidth + mbPtr->indicatorWidth, mbPtr->textHeight, &x, &y); Tk_DrawTextLayout(mbPtr->display, Tk_WindowId(tkwin), gc, mbPtr->textLayout, x, y, 0, -1); } #endif /* * If the menu button is disabled with a stipple rather than a special * foreground color, generate the stippled effect. */ if ((mbPtr->state == STATE_DISABLED) && ((mbPtr->disabledFg != NULL) || (mbPtr->image != NULL))) { XFillRectangle(mbPtr->display, Tk_WindowId(tkwin), mbPtr->disabledGC, mbPtr->inset, mbPtr->inset, (unsigned) (Tk_Width(tkwin) - 2*mbPtr->inset), (unsigned) (Tk_Height(tkwin) - 2*mbPtr->inset)); } /* * Draw the cascade indicator for the menu button on the * right side of the window, if desired. */ if (mbPtr->indicatorOn) { int w, h, i; Rect r; r.left = macDraw->xOff + Tk_Width(tkwin) - mbPtr->inset - mbPtr->indicatorWidth; r.top = macDraw->yOff + Tk_Height(tkwin)/2 - mbPtr->indicatorHeight/2; r.right = macDraw->xOff + Tk_Width(tkwin) - mbPtr->inset - kTriangleMargin; r.bottom = macDraw->yOff + Tk_Height(tkwin)/2 + mbPtr->indicatorHeight/2; h = mbPtr->indicatorHeight; w = mbPtr->indicatorWidth - 1 - kTriangleMargin; for (i = 0; i < h; i++) { MoveTo(r.left + i, r.top + i); LineTo(r.left + i + w, r.top + i); w -= 2; } } /* * Draw the border and traversal highlight last. This way, if the * menu button's contents overflow onto the border they'll be covered * up by the border. */ TkMacSetUpClippingRgn(Tk_WindowId(tkwin)); if (mbPtr->borderWidth > 0) { Rect r; r.left = macDraw->xOff + mbPtr->highlightWidth + mbPtr->borderWidth; r.top = macDraw->yOff + mbPtr->highlightWidth + mbPtr->borderWidth; r.right = macDraw->xOff + Tk_Width(tkwin) - mbPtr->highlightWidth - mbPtr->borderWidth; r.bottom = macDraw->yOff + Tk_Height(tkwin) - mbPtr->highlightWidth - mbPtr->borderWidth; FrameRect(&r); PenSize(mbPtr->borderWidth - 1, mbPtr->borderWidth - 1); MoveTo(r.right, r.top + kShadowOffset); LineTo(r.right, r.bottom); LineTo(r.left + kShadowOffset, r.bottom); } if (mbPtr->highlightWidth != 0) { GC fgGC, bgGC; bgGC = Tk_GCForColor(mbPtr->highlightBgColorPtr, Tk_WindowId(tkwin)); if (mbPtr->flags & GOT_FOCUS) { fgGC = Tk_GCForColor(mbPtr->highlightColorPtr, Tk_WindowId(tkwin)); TkpDrawHighlightBorder(tkwin, fgGC, bgGC, mbPtr->highlightWidth, Tk_WindowId(tkwin)); } else { TkpDrawHighlightBorder(tkwin, bgGC, bgGC, mbPtr->highlightWidth, Tk_WindowId(tkwin)); } } SetGWorld(saveWorld, saveDevice); }
static int ConfigureMenuButton( Tcl_Interp *interp, /* Used for error reporting. */ register TkMenuButton *mbPtr, /* Information about widget; may or may not * already have values for some fields. */ int objc, /* Number of valid entries in objv. */ Tcl_Obj *const objv[]) /* Arguments. */ { Tk_SavedOptions savedOptions; Tcl_Obj *errorResult = NULL; int error; Tk_Image image; /* * Eliminate any existing trace on variables monitored by the menubutton. */ if (mbPtr->textVarName != NULL) { Tcl_UntraceVar(interp, mbPtr->textVarName, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, MenuButtonTextVarProc, mbPtr); } /* * The following loop is potentially executed twice. During the first pass * configuration options get set to their new values. If there is an error * in this pass, we execute a second pass to restore all the options to * their previous values. */ for (error = 0; error <= 1; error++) { if (!error) { /* * First pass: set options to new values. */ if (Tk_SetOptions(interp, (char *) mbPtr, mbPtr->optionTable, objc, objv, mbPtr->tkwin, &savedOptions, NULL) != TCL_OK) { continue; } } else { /* * Second pass: restore options to old values. */ errorResult = Tcl_GetObjResult(interp); Tcl_IncrRefCount(errorResult); Tk_RestoreSavedOptions(&savedOptions); } /* * A few options need special processing, such as setting the * background from a 3-D border, or filling in complicated defaults * that couldn't be specified to Tk_SetOptions. */ if ((mbPtr->state == STATE_ACTIVE) && !Tk_StrictMotif(mbPtr->tkwin)) { Tk_SetBackgroundFromBorder(mbPtr->tkwin, mbPtr->activeBorder); } else { Tk_SetBackgroundFromBorder(mbPtr->tkwin, mbPtr->normalBorder); } if (mbPtr->highlightWidth < 0) { mbPtr->highlightWidth = 0; } if (mbPtr->padX < 0) { mbPtr->padX = 0; } if (mbPtr->padY < 0) { mbPtr->padY = 0; } /* * Get the image for the widget, if there is one. Allocate the new * image before freeing the old one, so that the reference count * doesn't go to zero and cause image data to be discarded. */ if (mbPtr->imageString != NULL) { image = Tk_GetImage(mbPtr->interp, mbPtr->tkwin, mbPtr->imageString, MenuButtonImageProc, mbPtr); if (image == NULL) { return TCL_ERROR; } } else { image = NULL; } if (mbPtr->image != NULL) { Tk_FreeImage(mbPtr->image); } mbPtr->image = image; /* * Recompute the geometry for the button. */ if ((mbPtr->bitmap != None) || (mbPtr->image != NULL)) { if (Tk_GetPixels(interp, mbPtr->tkwin, mbPtr->widthString, &mbPtr->width) != TCL_OK) { widthError: Tcl_AddErrorInfo(interp, "\n (processing -width option)"); continue; } if (Tk_GetPixels(interp, mbPtr->tkwin, mbPtr->heightString, &mbPtr->height) != TCL_OK) { heightError: Tcl_AddErrorInfo(interp, "\n (processing -height option)"); continue; } } else { if (Tcl_GetInt(interp, mbPtr->widthString, &mbPtr->width) != TCL_OK) { goto widthError; } if (Tcl_GetInt(interp, mbPtr->heightString, &mbPtr->height) != TCL_OK) { goto heightError; } } break; } if (!error) { Tk_FreeSavedOptions(&savedOptions); } if (mbPtr->textVarName != NULL) { /* * If no image or -compound is used, display the value of a variable. * Set up a trace to watch for any changes in it, create the variable * if it doesn't exist, and fetch its current value. */ const char *value; value = Tcl_GetVar(interp, mbPtr->textVarName, TCL_GLOBAL_ONLY); if (value == NULL) { Tcl_SetVar(interp, mbPtr->textVarName, mbPtr->text, TCL_GLOBAL_ONLY); } else { if (mbPtr->text != NULL) { ckfree(mbPtr->text); } mbPtr->text = (char *) ckalloc((unsigned) (strlen(value) + 1)); strcpy(mbPtr->text, value); } Tcl_TraceVar(interp, mbPtr->textVarName, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, MenuButtonTextVarProc, mbPtr); } TkMenuButtonWorldChanged(mbPtr); if (error) { Tcl_SetObjResult(interp, errorResult); Tcl_DecrRefCount(errorResult); return TCL_ERROR; } return TCL_OK; }