/*
* 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 "default.h"
#include "tkInt.h"
#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);
}