/*
* tkMacOSXButton.c --
*
* This file implements the Macintosh specific portion of the
* button widgets.
*
* Copyright (c) 1996-1997 by Sun Microsystems, Inc.
* Copyright 2001-2009, Apple Inc.
* Copyright (c) 2006-2009 Daniel A. Steffen <das@users.sourceforge.net>
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tkMacOSXPrivate.h"
#include "tkButton.h"
#include "tkMacOSXFont.h"
#include "tkMacOSXDebug.h"
/*
#ifdef TK_MAC_DEBUG
#define TK_MAC_DEBUG_BUTTON
#endif
*/
typedef struct MacButton {
TkButton info;
NSButton *button;
NSImage *image, *selectImage, *tristateImage;
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
int fix;
#endif
} MacButton;
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
int tkMacOSXUseCompatibilityMetrics = 1;
/*
* Use the following heuristic conversion constants to make NSButton-based
* widget metrics match up with the old Carbon control buttons (for the
* default Lucida Grande 13 font).
*/
#define NATIVE_BUTTON_INSET 2
#define NATIVE_BUTTON_EXTRA_H 2
typedef struct {
int trimW, trimH, inset, shrinkH, offsetX, offsetY;
} BoundsFix;
#define fixForTypeStyle(type, style) ( \
type == NSSwitchButton ? 0 : \
type == NSRadioButton ? 1 : \
style == NSRoundedBezelStyle ? 2 : \
style == NSRegularSquareBezelStyle ? 3 : \
style == NSShadowlessSquareBezelStyle ? 4 : \
INT_MIN)
static const BoundsFix boundsFixes[] = {
[fixForTypeStyle(NSSwitchButton,0)] = { 2, 2, -1, 0, 2, 1 },
[fixForTypeStyle(NSRadioButton,0)] = { 0, 2, -1, 0, 1, 1 },
[fixForTypeStyle(0,NSRoundedBezelStyle)] = { 28, 16, -6, 0, 0, 3 },
[fixForTypeStyle(0,NSRegularSquareBezelStyle)] = { 28, 15, -2, -1 },
[fixForTypeStyle(0,NSShadowlessSquareBezelStyle)] = { 2, 2 },
};
#endif
static void DisplayNativeButton(TkButton *butPtr);
static void ComputeNativeButtonGeometry(TkButton *butPtr);
static void DisplayUnixButton(TkButton *butPtr);
static void ComputeUnixButtonGeometry(TkButton *butPtr);
/*
* The class procedure table for the button widgets.
*/
const Tk_ClassProcs tkpButtonProcs = {
sizeof(Tk_ClassProcs), /* size */
TkButtonWorldChanged, /* worldChangedProc */
NULL, /* createProc */
NULL /* modalProc */
};
/*
*----------------------------------------------------------------------
*
* TkpCreateButton --
*
* Allocate a new TkButton structure.
*
* Results:
* Returns a newly allocated TkButton structure.
*
* Side effects:
* Registers an event handler for the widget.
*
*----------------------------------------------------------------------
*/
TkButton *
TkpCreateButton(
Tk_Window tkwin)
{
MacButton *macButtonPtr = ckalloc(sizeof(MacButton));
macButtonPtr->button = nil;
macButtonPtr->image = nil;
macButtonPtr->selectImage = nil;
macButtonPtr->tristateImage = nil;
return (TkButton *) macButtonPtr;
}
/*
*----------------------------------------------------------------------
*
* TkpDestroyButton --
*
* Free data structures associated with the button control.
*
* Results:
* None.
*
* Side effects:
* Restores the default control state.
*
*----------------------------------------------------------------------
*/
void
TkpDestroyButton(
TkButton *butPtr)
{
MacButton *macButtonPtr = (MacButton *) butPtr;
TkMacOSXMakeCollectableAndRelease(macButtonPtr->button);
TkMacOSXMakeCollectableAndRelease(macButtonPtr->selectImage);
TkMacOSXMakeCollectableAndRelease(macButtonPtr->selectImage);
TkMacOSXMakeCollectableAndRelease(macButtonPtr->tristateImage);
}
/*
*----------------------------------------------------------------------
*
* TkpDisplayButton --
*
* This procedure is invoked to display a button widget. It is
* normally invoked as an idle handler.
*
* Results:
* None.
*
* Side effects:
* Commands are output to X to display the button in its
* current mode. The REDRAW_PENDING flag is cleared.
*
*----------------------------------------------------------------------
*/
void
TkpDisplayButton(
ClientData clientData) /* Information about widget. */
{
TkButton *butPtr = (TkButton *) clientData;
butPtr->flags &= ~REDRAW_PENDING;
if (!butPtr->tkwin || !Tk_IsMapped(butPtr->tkwin)) {
return;
}
switch (butPtr->type) {
case TYPE_LABEL:
DisplayUnixButton(butPtr);
break;
case TYPE_BUTTON:
case TYPE_CHECK_BUTTON:
case TYPE_RADIO_BUTTON:
DisplayNativeButton(butPtr);
break;
}
}
/*
*----------------------------------------------------------------------
*
* TkpComputeButtonGeometry --
*
* After changes in a button's text or bitmap, this procedure
* recomputes the button's geometry and passes this information
* along to the geometry manager for the window.
*
* Results:
* None.
*
* Side effects:
* The button's window may change size.
*
*----------------------------------------------------------------------
*/
void
TkpComputeButtonGeometry(
register TkButton *butPtr) /* Button whose geometry may have changed. */
{
MacButton *macButtonPtr = (MacButton *) butPtr;
switch (butPtr->type) {
case TYPE_LABEL:
if (macButtonPtr->button && [macButtonPtr->button superview]) {
[macButtonPtr->button removeFromSuperviewWithoutNeedingDisplay];
}
ComputeUnixButtonGeometry(butPtr);
break;
case TYPE_BUTTON:
case TYPE_CHECK_BUTTON:
case TYPE_RADIO_BUTTON:
if (!macButtonPtr->button) {
NSButton *button = [[NSButton alloc] initWithFrame:NSZeroRect];
macButtonPtr->button = TkMacOSXMakeUncollectable(button);
}
ComputeNativeButtonGeometry(butPtr);
break;
}
}
/*
*----------------------------------------------------------------------
*
* TkpButtonSetDefaults --
*
* This procedure is invoked before option tables are created for
* buttons. It modifies some of the default values to match the current
* values defined for this platform.
*
* Results:
* Some of the default values in *specPtr are modified.
*
* Side effects:
* Updates some of.
*
*----------------------------------------------------------------------
*/
void
TkpButtonSetDefaults()
{
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
if (!tkMacOSXUseCompatibilityMetrics) {
strcpy(tkDefButtonHighlightWidth, DEF_BUTTON_HIGHLIGHT_WIDTH_NOCM);
strcpy(tkDefLabelHighlightWidth, DEF_BUTTON_HIGHLIGHT_WIDTH_NOCM);
strcpy(tkDefButtonPadx, DEF_BUTTON_PADX_NOCM);
strcpy(tkDefLabelPadx, DEF_BUTTON_PADX_NOCM);
strcpy(tkDefButtonPady, DEF_BUTTON_PADY_NOCM);
strcpy(tkDefLabelPady, DEF_BUTTON_PADY_NOCM);
}
#endif
}
#pragma mark -
#pragma mark Native Buttons:
/*
*----------------------------------------------------------------------
*
* DisplayNativeButton --
*
* This procedure is invoked to display a button widget. It is
* normally invoked as an idle handler.
*
* Results:
* None.
*
* Side effects:
* Commands are output to X to display the button in its
* current mode. The REDRAW_PENDING flag is cleared.
*
*----------------------------------------------------------------------
*/
static void
DisplayNativeButton(
TkButton *butPtr)
{
MacButton *macButtonPtr = (MacButton *) butPtr;
NSButton *button = macButtonPtr->button;
Tk_Window tkwin = butPtr->tkwin;
TkWindow *winPtr = (TkWindow *) tkwin;
MacDrawable *macWin = (MacDrawable *) winPtr->window;
TkMacOSXDrawingContext dc;
NSView *view = TkMacOSXDrawableView(macWin);
CGFloat viewHeight = [view bounds].size.height;
CGAffineTransform t = { .a = 1, .b = 0, .c = 0, .d = -1, .tx = 0,
.ty = viewHeight};
NSRect frame;
int enabled;
NSCellStateValue state;
if (!view ||
!TkMacOSXSetupDrawingContext((Drawable) macWin, NULL, 1, &dc)) {
return;
}
CGContextConcatCTM(dc.context, t);
/*
* We cannot change the background color of the button itself, only the
* color of the background of its container.
* This will be the color that peeks around the rounded corners of the
* button. We make this the highlightbackground rather than the background,
* because if you color the background of a frame containing a
* button, you usually also color the highlightbackground as well,
* or you will get a thin grey ring around the button.
*/
Tk_Fill3DRectangle(tkwin, (Pixmap) macWin, butPtr->type == TYPE_BUTTON ?
butPtr->highlightBorder : butPtr->normalBorder, 0, 0,
Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
if ([button superview] != view) {
[view addSubview:button];
}
if (macButtonPtr->tristateImage) {
NSImage *selectImage = macButtonPtr->selectImage ?
macButtonPtr->selectImage : macButtonPtr->image;
[button setImage:(butPtr->flags & TRISTATED ?
selectImage : macButtonPtr->image)];
[button setAlternateImage:(butPtr->flags & TRISTATED ?
macButtonPtr->tristateImage : selectImage)];
}
if (butPtr->flags & SELECTED) {
state = NSOnState;
} else if (butPtr->flags & TRISTATED) {
state = NSMixedState;
} else {
state = NSOffState;
}
[button setState:state];
enabled = !(butPtr->state == STATE_DISABLED);
[button setEnabled:enabled];
if (enabled) {
//[button highlight:(butPtr->state == STATE_ACTIVE)];
//[cell setHighlighted:(butPtr->state == STATE_ACTIVE)];
}
if (butPtr->type == TYPE_BUTTON && butPtr->defaultState == STATE_ACTIVE) {
//[[view window] setDefaultButtonCell:cell];
[button setKeyEquivalent:@"\r"];
} else {
[button setKeyEquivalent:@""];
}
frame = NSMakeRect(macWin->xOff, macWin->yOff, Tk_Width(tkwin),
Tk_Height(tkwin));
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
if (tkMacOSXUseCompatibilityMetrics) {
BoundsFix boundsFix = boundsFixes[macButtonPtr->fix];
frame = NSOffsetRect(frame, boundsFix.offsetX, boundsFix.offsetY);
frame.size.height -= boundsFix.shrinkH + NATIVE_BUTTON_EXTRA_H;
frame = NSInsetRect(frame, boundsFix.inset + NATIVE_BUTTON_INSET,
boundsFix.inset + NATIVE_BUTTON_INSET);
}
#endif
frame.origin.y = viewHeight - (frame.origin.y + frame.size.height);
if (!NSEqualRects(frame, [button frame])) {
[button setFrame:frame];
}
[button displayRectIgnoringOpacity:[button bounds]];
TkMacOSXRestoreDrawingContext(&dc);
#ifdef TK_MAC_DEBUG_BUTTON
TKLog(@"button %s frame %@ width %d height %d",
((TkWindow *)butPtr->tkwin)->pathName, NSStringFromRect(frame),
Tk_Width(tkwin), Tk_Height(tkwin));
#endif
}
/*
*----------------------------------------------------------------------
*
* ComputeNativeButtonGeometry --
*
* After changes in a button's text or bitmap, this procedure
* recomputes the button's geometry and passes this information
* along to the geometry manager for the window.
*
* Results:
* None.
*
* Side effects:
* The button's window may change size.
*
*----------------------------------------------------------------------
*/
static void
ComputeNativeButtonGeometry(
TkButton *butPtr) /* Button whose geometry may have changed. */
{
MacButton *macButtonPtr = (MacButton *) butPtr;
NSButton *button = macButtonPtr->button;
NSButtonCell *cell = [button cell];
NSButtonType type = -1;
NSBezelStyle style = 0;
NSInteger highlightsBy = 0, showsStateBy = 0;
NSFont *font;
NSRect bounds = NSZeroRect, titleRect = NSZeroRect;
int haveImage = (butPtr->image || butPtr->bitmap != None), haveText = 0;
int haveCompound = (butPtr->compound != COMPOUND_NONE);
int width, height, border = 0;
butPtr->indicatorSpace = 0;
butPtr->inset = 0;
if (butPtr->highlightWidth < 0) {
butPtr->highlightWidth = 0;
}
switch (butPtr->type) {
case TYPE_BUTTON:
type = NSMomentaryPushInButton;
if (!haveImage) {
style = NSRoundedBezelStyle;
butPtr->inset = butPtr->defaultState != STATE_DISABLED ?
butPtr->highlightWidth : 0;
[button setImage:nil];
[button setImagePosition:NSNoImage];
} else {
style = NSShadowlessSquareBezelStyle;
highlightsBy = butPtr->selectImage || butPtr->bitmap ?
NSContentsCellMask : 0;
border = butPtr->borderWidth;
}
break;
case TYPE_RADIO_BUTTON:
case TYPE_CHECK_BUTTON:
if (!haveImage /*|| butPtr->indicatorOn*/) { // TODO: indicatorOn
type = butPtr->type == TYPE_RADIO_BUTTON ?
NSRadioButton : NSSwitchButton;
butPtr->inset = /*butPtr->indicatorOn ? 0 :*/ butPtr->borderWidth;
} else {
type = NSPushOnPushOffButton;
style = NSShadowlessSquareBezelStyle;
highlightsBy = butPtr->selectImage || butPtr->bitmap ?
NSContentsCellMask : 0;
showsStateBy = butPtr->selectImage || butPtr->tristateImage ?
NSContentsCellMask : 0;
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
if (tkMacOSXUseCompatibilityMetrics) {
border = butPtr->borderWidth > 1 ? butPtr->borderWidth - 1 : 1;
} else
#endif
{
border = butPtr->borderWidth;
}
}
break;
}
[button setButtonType:type];
if (style) {
[button setBezelStyle:style];
}
if (highlightsBy) {
[cell setHighlightsBy:highlightsBy|[cell highlightsBy]];
}
if (showsStateBy) {
[cell setShowsStateBy:showsStateBy|[cell showsStateBy]];
}
#if 0
if (style == NSShadowlessSquareBezelStyle) {
NSControlSize controlSize = NSRegularControlSize;
if (butPtr->borderWidth <= 2) {
controlSize = NSMiniControlSize;
} else if (butPtr->borderWidth == 3) {
controlSize = NSSmallControlSize;
}
[cell setControlSize:controlSize];
}
#endif
[button setAllowsMixedState:YES];
if (!haveImage || haveCompound) {
int len;
char *text = Tcl_GetStringFromObj(butPtr->textPtr, &len);
if (len) {
NSString *title = [[NSString alloc] initWithBytes:text length:len
encoding:NSUTF8StringEncoding];
[button setTitle:title];
[title release];
haveText = 1;
}
}
haveCompound = (haveCompound && haveImage && haveText);
if (haveText) {
NSTextAlignment alignment = NSNaturalTextAlignment;
switch (butPtr->justify) {
case TK_JUSTIFY_LEFT:
alignment = NSLeftTextAlignment;
break;
case TK_JUSTIFY_RIGHT:
alignment = NSRightTextAlignment;
break;
case TK_JUSTIFY_CENTER:
alignment = NSCenterTextAlignment;
break;
}
[button setAlignment:alignment];
} else {
[button setTitle:@""];
}
font = TkMacOSXNSFontForFont(butPtr->tkfont);
if (font) {
[button setFont:font];
}
TkMacOSXMakeCollectableAndRelease(macButtonPtr->image);
TkMacOSXMakeCollectableAndRelease(macButtonPtr->selectImage);
TkMacOSXMakeCollectableAndRelease(macButtonPtr->tristateImage);
if (haveImage) {
int width, height;
NSImage *image, *selectImage = nil, *tristateImage = nil;
NSCellImagePosition pos = NSImageOnly;
if (butPtr->image) {
Tk_SizeOfImage(butPtr->image, &width, &height);
image = TkMacOSXGetNSImageWithTkImage(butPtr->display,
butPtr->image, width, height);
if (butPtr->selectImage) {
selectImage = TkMacOSXGetNSImageWithTkImage(butPtr->display,
butPtr->selectImage, width, height);
}
if (butPtr->tristateImage) {
tristateImage = TkMacOSXGetNSImageWithTkImage(butPtr->display,
butPtr->tristateImage, width, height);
}
} else {
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
image = TkMacOSXGetNSImageWithBitmap(butPtr->display,
butPtr->bitmap, butPtr->normalTextGC, width, height);
selectImage = TkMacOSXGetNSImageWithBitmap(butPtr->display,
butPtr->bitmap, butPtr->activeTextGC, width, height);
}
[button setImage:image];
if (selectImage) {
[button setAlternateImage:selectImage];
}
if (tristateImage) {
macButtonPtr->image = TkMacOSXMakeUncollectableAndRetain(image);
if (selectImage) {
macButtonPtr->selectImage =
TkMacOSXMakeUncollectableAndRetain(selectImage);
}
macButtonPtr->tristateImage =
TkMacOSXMakeUncollectableAndRetain(tristateImage);
}
if (haveCompound) {
switch ((enum compound) butPtr->compound) {
case COMPOUND_TOP:
pos = NSImageAbove;
break;
case COMPOUND_BOTTOM:
pos = NSImageBelow;
break;
case COMPOUND_LEFT:
pos = NSImageLeft;
break;
case COMPOUND_RIGHT:
pos = NSImageRight;
break;
case COMPOUND_CENTER:
pos = NSImageOverlaps;
break;
case COMPOUND_NONE:
pos = NSImageOnly;
break;
}
}
[button setImagePosition:pos];
}
// if font is too tall, we can't use the fixed-height rounded bezel
if (!haveImage && haveText && style == NSRoundedBezelStyle) {
Tk_FontMetrics fm;
Tk_GetFontMetrics(butPtr->tkfont, &fm);
if (fm.linespace > 18) {
[button setBezelStyle:(style = NSShadowlessSquareBezelStyle)];
}
}
bounds.size = [cell cellSize];
if (haveText) {
titleRect = [cell titleRectForBounds:bounds];
if (butPtr->wrapLength > 0 &&
titleRect.size.width > butPtr->wrapLength) {
if (style == NSRoundedBezelStyle) {
[button setBezelStyle:(style = NSRegularSquareBezelStyle)];
bounds.size = [cell cellSize];
titleRect = [cell titleRectForBounds:bounds];
}
bounds.size.width -= titleRect.size.width - butPtr->wrapLength;
bounds.size.height = 40000.0;
[cell setWraps:YES];
bounds.size = [cell cellSizeForBounds:bounds];
#ifdef TK_MAC_DEBUG_BUTTON
titleRect = [cell titleRectForBounds:bounds];
#endif
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
if (tkMacOSXUseCompatibilityMetrics) {
bounds.size.height += 3;
}
#endif
}
}
width = lround(bounds.size.width);
height = lround(bounds.size.height);
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
if (tkMacOSXUseCompatibilityMetrics) {
macButtonPtr->fix = fixForTypeStyle(type, style);
width -= boundsFixes[macButtonPtr->fix].trimW;
height -= boundsFixes[macButtonPtr->fix].trimH;
}
#endif
if (haveImage || haveCompound) {
if (butPtr->width > 0) {
width = butPtr->width;
}
if (butPtr->height > 0) {
height = butPtr->height;
}
} else {
if (butPtr->width > 0) {
int avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1);
width = butPtr->width * avgWidth;
}
if (butPtr->height > 0) {
Tk_FontMetrics fm;
Tk_GetFontMetrics(butPtr->tkfont, &fm);
height = butPtr->height * fm.linespace;
}
}
if (!haveImage || haveCompound) {
width += 2*butPtr->padX;
height += 2*butPtr->padY;
}
if (haveImage) {
width += 2*border;
height += 2*border;
}
#if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS
if (tkMacOSXUseCompatibilityMetrics) {
width += 2*NATIVE_BUTTON_INSET;
height += 2*NATIVE_BUTTON_INSET + NATIVE_BUTTON_EXTRA_H;
}
#endif
Tk_GeometryRequest(butPtr->tkwin, width, height);
Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
#ifdef TK_MAC_DEBUG_BUTTON
TKLog(@"button %s bounds %@ titleRect %@ width %d height %d inset %d borderWidth %d",
((TkWindow *)butPtr->tkwin)->pathName, NSStringFromRect(bounds),
NSStringFromRect(titleRect), width, height, butPtr->inset,
butPtr->borderWidth);
#endif
}
#pragma mark -
#pragma mark Unix Buttons:
/*
*----------------------------------------------------------------------
*
* DisplayUnixButton --
*
* This procedure is invoked to display a button widget. It is
* normally invoked as an idle handler.
*
* Results:
* None.
*
* Side effects:
* Commands are output to X to display the button in its
* current mode. The REDRAW_PENDING flag is cleared.
*
*----------------------------------------------------------------------
*/
void
DisplayUnixButton(
TkButton *butPtr)
{
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 = 0, height = 0, fullWidth, fullHeight;
int textXOffset, textYOffset;
int haveImage = 0, haveText = 0;
int imageWidth, imageHeight;
int imageXOffset = 0, imageYOffset = 0;
/* image information that will be used to
* restrict disabled pixmap as well */
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;
}
relief = butPtr->relief;
pixmap = (Pixmap) Tk_WindowId(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,
fullWidth, fullHeight, &x, &y);
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,
width, height, &x, &y);
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->textWidth, butPtr->textHeight, &x, &y);
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;
}
}
/*
* 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);
}
}
}
/*
*----------------------------------------------------------------------
*
* ComputeUnixButtonGeometry --
*
* After changes in a button's text or bitmap, this procedure
* recomputes the button's geometry and passes this information
* along to the geometry manager for the window.
*
* Results:
* None.
*
* Side effects:
* The button's window may change size.
*
*----------------------------------------------------------------------
*/
void
ComputeUnixButtonGeometry(
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;
}
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;
}
} else {
width = txtWidth;
height = txtHeight;
if (butPtr->width > 0) {
width = butPtr->width * avgWidth;
}
if (butPtr->height > 0) {
height = butPtr->height * fm.linespace;
}
}
}
if (!haveImage) {
width += 2*butPtr->padX;
height += 2*butPtr->padY;
}
Tk_GeometryRequest(butPtr->tkwin, (int) (width
+ 2*butPtr->inset), (int) (height + 2*butPtr->inset));
Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
}
/*
* Local Variables:
* mode: objc
* c-basic-offset: 4
* fill-column: 79
* coding: utf-8
* End:
*/