tkUnixMenubu.c
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- /*
- * tkUnixMenubu.c --
- *
- * This file implements the Unix specific portion of the
- * menubutton widget.
- *
- * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tkUnixMenubu.c,v 1.6.4.1 2003/11/17 23:29:36 hobbs Exp $
- */
- #include "tkMenubutton.h"
- /*
- * The structure below defines menubutton class behavior by means of
- * procedures that can be invoked from generic window code.
- */
- Tk_ClassProcs tkpMenubuttonClass = {
- sizeof(Tk_ClassProcs), /* size */
- TkMenuButtonWorldChanged, /* worldChangedProc */
- };
- /*
- *----------------------------------------------------------------------
- *
- * TkpCreateMenuButton --
- *
- * Allocate a new TkMenuButton structure.
- *
- * Results:
- * Returns a newly allocated TkMenuButton structure.
- *
- * Side effects:
- * Registers an event handler for the widget.
- *
- *----------------------------------------------------------------------
- */
- TkMenuButton *
- TkpCreateMenuButton(tkwin)
- Tk_Window tkwin;
- {
- return (TkMenuButton *)ckalloc(sizeof(TkMenuButton));
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkpDisplayMenuButton --
- *
- * This procedure is invoked to display a menubutton widget.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Commands are output to X to display the menubutton in its
- * current mode.
- *
- *----------------------------------------------------------------------
- */
- void
- TkpDisplayMenuButton(clientData)
- 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 width, height, fullWidth, fullHeight;
- int textXOffset, textYOffset;
- int imageWidth, imageHeight;
- int imageXOffset, imageYOffset; /* 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 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.
- */
- 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);
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkpDestroyMenuButton --
- *
- * Free data structures associated with the menubutton control.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Restores the default control state.
- *
- *----------------------------------------------------------------------
- */
- void
- TkpDestroyMenuButton(mbPtr)
- TkMenuButton *mbPtr;
- {
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkpComputeMenuButtonGeometry --
- *
- * After changes in a menu button's text or bitmap, this procedure
- * recomputes the menu button's geometry and passes this information
- * along to the geometry manager for the window.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The menu button's window may change size.
- *
- *----------------------------------------------------------------------
- */
- void
- TkpComputeMenuButtonGeometry(mbPtr)
- TkMenuButton *mbPtr; /* Widget record for menu button. */
- {
- int width, height, mm, pixels;
- int avgWidth, txtWidth, txtHeight;
- int haveImage = 0, haveText = 0;
- Tk_FontMetrics fm;
- mbPtr->inset = mbPtr->highlightWidth + mbPtr->borderWidth;
- width = 0;
- height = 0;
- txtWidth = 0;
- txtHeight = 0;
- avgWidth = 0;
- 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;
- }
- if (haveImage == 0 || mbPtr->compound != COMPOUND_NONE) {
- Tk_FreeTextLayout(mbPtr->textLayout);
- mbPtr->textLayout = Tk_ComputeTextLayout(mbPtr->tkfont, mbPtr->text,
- -1, mbPtr->wrapLength, mbPtr->justify, 0, &mbPtr->textWidth,
- &mbPtr->textHeight);
- txtWidth = mbPtr->textWidth;
- txtHeight = mbPtr->textHeight;
- avgWidth = Tk_TextWidth(mbPtr->tkfont, "0", 1);
- Tk_GetFontMetrics(mbPtr->tkfont, &fm);
- haveText = (txtWidth != 0 && txtHeight != 0);
- }
- /*
- * If the menubutton is compound (ie, 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 menubutton has both text and
- * an image, because otherwise it is not really a compound menubutton.
- */
- if (mbPtr->compound != COMPOUND_NONE && haveImage && haveText) {
- switch ((enum compound) mbPtr->compound) {
- case COMPOUND_TOP:
- case COMPOUND_BOTTOM: {
- /* Image is above or below text */
- height += txtHeight + mbPtr->padY;
- width = (width > txtWidth ? width : txtWidth);
- break;
- }
- case COMPOUND_LEFT:
- case COMPOUND_RIGHT: {
- /* Image is left or right of text */
- width += txtWidth + mbPtr->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 (mbPtr->width > 0) {
- width = mbPtr->width;
- }
- if (mbPtr->height > 0) {
- height = mbPtr->height;
- }
- width += 2*mbPtr->padX;
- height += 2*mbPtr->padY;
- } else {
- if (haveImage) {
- if (mbPtr->width > 0) {
- width = mbPtr->width;
- }
- if (mbPtr->height > 0) {
- height = mbPtr->height;
- }
- } else {
- width = txtWidth;
- height = txtHeight;
- if (mbPtr->width > 0) {
- width = mbPtr->width * avgWidth;
- }
- if (mbPtr->height > 0) {
- height = mbPtr->height * fm.linespace;
- }
- }
- }
- if (! haveImage) {
- width += 2*mbPtr->padX;
- height += 2*mbPtr->padY;
- }
- if (mbPtr->indicatorOn) {
- mm = WidthMMOfScreen(Tk_Screen(mbPtr->tkwin));
- pixels = WidthOfScreen(Tk_Screen(mbPtr->tkwin));
- mbPtr->indicatorHeight= (INDICATOR_HEIGHT * pixels)/(10*mm);
- mbPtr->indicatorWidth = (INDICATOR_WIDTH * pixels)/(10*mm)
- + 2*mbPtr->indicatorHeight;
- width += mbPtr->indicatorWidth;
- } else {
- mbPtr->indicatorHeight = 0;
- mbPtr->indicatorWidth = 0;
- }
- Tk_GeometryRequest(mbPtr->tkwin, (int) (width + 2*mbPtr->inset),
- (int) (height + 2*mbPtr->inset));
- Tk_SetInternalBorder(mbPtr->tkwin, mbPtr->inset);
- }