308 lines
8.4 KiB
C
308 lines
8.4 KiB
C
/*
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* tkUnixMenubu.c --
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*
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* This file implements the Unix specific portion of the
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* menubutton widget.
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*
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* Copyright (c) 1996-1997 by Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* SCCS: @(#) tkUnixMenubu.c 1.9 97/05/23 16:25:01
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*/
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#include "tkMenubutton.h"
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/*
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* The structure below defines menubutton class behavior by means of
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* procedures that can be invoked from generic window code.
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*/
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TkClassProcs tkpMenubuttonClass = {
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NULL, /* createProc. */
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TkMenuButtonWorldChanged, /* geometryProc. */
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NULL /* modalProc. */
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};
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/*
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*----------------------------------------------------------------------
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*
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* TkpCreateMenuButton --
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*
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* Allocate a new TkMenuButton structure.
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*
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* Results:
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* Returns a newly allocated TkMenuButton structure.
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*
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* Side effects:
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* Registers an event handler for the widget.
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*
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*----------------------------------------------------------------------
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*/
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TkMenuButton *
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TkpCreateMenuButton(tkwin)
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Tk_Window tkwin;
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{
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return (TkMenuButton *)ckalloc(sizeof(TkMenuButton));
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpDisplayMenuButton --
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*
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* This procedure is invoked to display a menubutton widget.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Commands are output to X to display the menubutton in its
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* current mode.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpDisplayMenuButton(clientData)
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ClientData clientData; /* Information about widget. */
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{
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register TkMenuButton *mbPtr = (TkMenuButton *) clientData;
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GC gc;
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Tk_3DBorder border;
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Pixmap pixmap;
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int x = 0; /* Initialization needed only to stop
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* compiler warning. */
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int y;
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register Tk_Window tkwin = mbPtr->tkwin;
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int width, height;
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mbPtr->flags &= ~REDRAW_PENDING;
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if ((mbPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
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return;
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}
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if ((mbPtr->state == tkDisabledUid) && (mbPtr->disabledFg != NULL)) {
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gc = mbPtr->disabledGC;
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border = mbPtr->normalBorder;
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} else if ((mbPtr->state == tkActiveUid) && !Tk_StrictMotif(mbPtr->tkwin)) {
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gc = mbPtr->activeTextGC;
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border = mbPtr->activeBorder;
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} else {
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gc = mbPtr->normalTextGC;
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border = mbPtr->normalBorder;
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}
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/*
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* In order to avoid screen flashes, this procedure redraws
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* the menu button in a pixmap, then copies the pixmap to the
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* screen in a single operation. This means that there's no
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* point in time where the on-sreen image has been cleared.
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*/
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pixmap = Tk_GetPixmap(mbPtr->display, Tk_WindowId(tkwin),
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Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
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Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin),
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Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
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/*
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* Display image or bitmap or text for button.
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*/
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if (mbPtr->image != None) {
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Tk_SizeOfImage(mbPtr->image, &width, &height);
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imageOrBitmap:
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TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0,
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width + mbPtr->indicatorWidth, height, &x, &y);
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if (mbPtr->image != NULL) {
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Tk_RedrawImage(mbPtr->image, 0, 0, width, height, pixmap,
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x, y);
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} else {
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XCopyPlane(mbPtr->display, mbPtr->bitmap, pixmap,
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gc, 0, 0, (unsigned) width, (unsigned) height, x, y, 1);
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}
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} else if (mbPtr->bitmap != None) {
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Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height);
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goto imageOrBitmap;
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} else {
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TkComputeAnchor(mbPtr->anchor, tkwin, mbPtr->padX, mbPtr->padY,
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mbPtr->textWidth + mbPtr->indicatorWidth,
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mbPtr->textHeight, &x, &y);
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Tk_DrawTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout, x, y,
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0, -1);
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Tk_UnderlineTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout,
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x, y, mbPtr->underline);
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}
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/*
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* If the menu button is disabled with a stipple rather than a special
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* foreground color, generate the stippled effect.
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*/
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if ((mbPtr->state == tkDisabledUid)
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&& ((mbPtr->disabledFg == NULL) || (mbPtr->image != NULL))) {
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XFillRectangle(mbPtr->display, pixmap, mbPtr->disabledGC,
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mbPtr->inset, mbPtr->inset,
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(unsigned) (Tk_Width(tkwin) - 2*mbPtr->inset),
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(unsigned) (Tk_Height(tkwin) - 2*mbPtr->inset));
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}
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/*
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* Draw the cascade indicator for the menu button on the
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* right side of the window, if desired.
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*/
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if (mbPtr->indicatorOn) {
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int borderWidth;
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borderWidth = (mbPtr->indicatorHeight+1)/3;
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if (borderWidth < 1) {
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borderWidth = 1;
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}
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/*y += mbPtr->textHeight / 2;*/
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Tk_Fill3DRectangle(tkwin, pixmap, border,
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Tk_Width(tkwin) - mbPtr->inset - mbPtr->indicatorWidth
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+ mbPtr->indicatorHeight,
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((int) (Tk_Height(tkwin) - mbPtr->indicatorHeight))/2,
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mbPtr->indicatorWidth - 2*mbPtr->indicatorHeight,
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mbPtr->indicatorHeight, borderWidth, TK_RELIEF_RAISED);
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}
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/*
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* Draw the border and traversal highlight last. This way, if the
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* menu button's contents overflow onto the border they'll be covered
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* up by the border.
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*/
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if (mbPtr->relief != TK_RELIEF_FLAT) {
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Tk_Draw3DRectangle(tkwin, pixmap, border,
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mbPtr->highlightWidth, mbPtr->highlightWidth,
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Tk_Width(tkwin) - 2*mbPtr->highlightWidth,
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Tk_Height(tkwin) - 2*mbPtr->highlightWidth,
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mbPtr->borderWidth, mbPtr->relief);
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}
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if (mbPtr->highlightWidth != 0) {
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GC gc;
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if (mbPtr->flags & GOT_FOCUS) {
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gc = Tk_GCForColor(mbPtr->highlightColorPtr, pixmap);
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} else {
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gc = Tk_GCForColor(mbPtr->highlightBgColorPtr, pixmap);
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}
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Tk_DrawFocusHighlight(tkwin, gc, mbPtr->highlightWidth, pixmap);
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}
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/*
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* Copy the information from the off-screen pixmap onto the screen,
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* then delete the pixmap.
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*/
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XCopyArea(mbPtr->display, pixmap, Tk_WindowId(tkwin),
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mbPtr->normalTextGC, 0, 0, (unsigned) Tk_Width(tkwin),
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(unsigned) Tk_Height(tkwin), 0, 0);
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Tk_FreePixmap(mbPtr->display, pixmap);
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpDestroyMenuButton --
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*
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* Free data structures associated with the menubutton control.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Restores the default control state.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpDestroyMenuButton(mbPtr)
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TkMenuButton *mbPtr;
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{
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpComputeMenuButtonGeometry --
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*
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* After changes in a menu button's text or bitmap, this procedure
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* recomputes the menu button's geometry and passes this information
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* along to the geometry manager for the window.
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*
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* Results:
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* None.
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*
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* Side effects:
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* The menu button's window may change size.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpComputeMenuButtonGeometry(mbPtr)
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register TkMenuButton *mbPtr; /* Widget record for menu button. */
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{
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int width, height, mm, pixels;
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mbPtr->inset = mbPtr->highlightWidth + mbPtr->borderWidth;
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if (mbPtr->image != None) {
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Tk_SizeOfImage(mbPtr->image, &width, &height);
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if (mbPtr->width > 0) {
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width = mbPtr->width;
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}
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if (mbPtr->height > 0) {
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height = mbPtr->height;
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}
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} else if (mbPtr->bitmap != None) {
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Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height);
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if (mbPtr->width > 0) {
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width = mbPtr->width;
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}
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if (mbPtr->height > 0) {
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height = mbPtr->height;
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}
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} else {
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Tk_FreeTextLayout(mbPtr->textLayout);
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mbPtr->textLayout = Tk_ComputeTextLayout(mbPtr->tkfont, mbPtr->text,
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-1, mbPtr->wrapLength, mbPtr->justify, 0, &mbPtr->textWidth,
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&mbPtr->textHeight);
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width = mbPtr->textWidth;
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height = mbPtr->textHeight;
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if (mbPtr->width > 0) {
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width = mbPtr->width * Tk_TextWidth(mbPtr->tkfont, "0", 1);
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}
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if (mbPtr->height > 0) {
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Tk_FontMetrics fm;
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Tk_GetFontMetrics(mbPtr->tkfont, &fm);
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height = mbPtr->height * fm.linespace;
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}
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width += 2*mbPtr->padX;
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height += 2*mbPtr->padY;
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}
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if (mbPtr->indicatorOn) {
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mm = WidthMMOfScreen(Tk_Screen(mbPtr->tkwin));
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pixels = WidthOfScreen(Tk_Screen(mbPtr->tkwin));
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mbPtr->indicatorHeight= (INDICATOR_HEIGHT * pixels)/(10*mm);
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mbPtr->indicatorWidth = (INDICATOR_WIDTH * pixels)/(10*mm)
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+ 2*mbPtr->indicatorHeight;
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width += mbPtr->indicatorWidth;
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} else {
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mbPtr->indicatorHeight = 0;
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mbPtr->indicatorWidth = 0;
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}
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Tk_GeometryRequest(mbPtr->tkwin, (int) (width + 2*mbPtr->inset),
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(int) (height + 2*mbPtr->inset));
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Tk_SetInternalBorder(mbPtr->tkwin, mbPtr->inset);
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}
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