diff options
Diffstat (limited to 'macosx/tkMacOSXButton.c')
| -rw-r--r-- | macosx/tkMacOSXButton.c | 163 |
1 files changed, 144 insertions, 19 deletions
diff --git a/macosx/tkMacOSXButton.c b/macosx/tkMacOSXButton.c index 036624d..dd4cca7 100644 --- a/macosx/tkMacOSXButton.c +++ b/macosx/tkMacOSXButton.c @@ -7,6 +7,7 @@ * Copyright (c) 1996-1997 by Sun Microsystems, Inc. * Copyright 2001-2009, Apple Inc. * Copyright (c) 2006-2009 Daniel A. Steffen <das@users.sourceforge.net> + * Copyright 2014 Marc Culler. * * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. @@ -23,9 +24,59 @@ #endif */ +static NSRect TkMacOSXGetButtonFrame(TkButton *butPtr); + +/* + * A subclass of NSButton with sanity checking: + * NSButtons created by Tk will have their tag set to a pointer to the TkButton + * which manages the NSButton. This allows a TkNSButton to be aware of the + * state of its Tk parent. This subclass overrides the drawRect method + * so that it will not draw itself unless the NSButton frame matches + * the frame which was installed by DisplayButton, and the TkButton is + * mapped. Also, it will not draw anything if the widget is completely + * outside of its container. + */ + +@interface TkNSButton: NSButton + +@end + +@implementation TkNSButton + + - (void)drawRect:(NSRect)dirtyRect + { + NSInteger tag = [self tag]; + if ( tag != -1) { + TkButton *butPtr = (TkButton *)tag; + MacDrawable* macWin = (MacDrawable *)butPtr; + NSRect Tkframe = TkMacOSXGetButtonFrame(butPtr); + Tk_Window tkwin = butPtr->tkwin; + /* Do not draw if the widget is misplaced or unmapped. */ + if ( NSIsEmptyRect(Tkframe) || + ! macWin->winPtr->flags & TK_MAPPED || + ! NSEqualRects(Tkframe, [self frame]) + ) { + return; + } + /* Do not draw if the widget is completely outside of its parent, or within 20 pixels of the lower border; this prevents buttons from being drawn on peer widgets as scrolling occurs. */ + if (tkwin) { + int parent_height = Tk_Height(Tk_Parent(tkwin)); + int widget_height = Tk_Height(tkwin); + int y = Tk_Y(tkwin); + if ( y > parent_height - 20 || y + widget_height < 0 ) { + return; + } + } + [super drawRect:dirtyRect]; + } + } + +@end + + typedef struct MacButton { TkButton info; - NSButton *button; + TkNSButton *button; NSImage *image, *selectImage, *tristateImage; #if TK_MAC_BUTTON_USE_COMPATIBILITY_METRICS int fix; @@ -186,6 +237,45 @@ TkpDisplayButton( /* *---------------------------------------------------------------------- * + * TkpShiftButton -- + * + * Moves the frame of an NSButton (or TkNSButton) and in case the tag is + * set, also adjusts the xOff and yOff of the controlling TkButton's + * MacDrawable. This is used to avoid jitter when scrolling. + * + * Results: + * None + * + * Side effects: + * Moves the NSbutton after adjusting the associated MacDrawable. + * + *---------------------------------------------------------------------- + */ +void +TkpShiftButton( + NSButton *button, + NSPoint delta ) + { + NSPoint origin = [button frame].origin; + NSInteger tag = [button tag]; + if ( tag != -1) { + TkButton* butPtr = (TkButton *)tag; + TkWindow *winPtr = (TkWindow *) (butPtr->tkwin); + if (winPtr) { + MacDrawable *macWin = (MacDrawable *) winPtr->window; + macWin->xOff += delta.x; + macWin->yOff += delta.y; + } + } + origin.x += delta.x; + origin.y -= delta.y; + [button setFrameOrigin:origin]; + } + + +/* + *---------------------------------------------------------------------- + * * TkpComputeButtonGeometry -- * * After changes in a button's text or bitmap, this procedure @@ -218,7 +308,8 @@ TkpComputeButtonGeometry( case TYPE_CHECK_BUTTON: case TYPE_RADIO_BUTTON: if (!macButtonPtr->button) { - NSButton *button = [[NSButton alloc] initWithFrame:NSZeroRect]; + TkNSButton *button = [[TkNSButton alloc] initWithFrame:NSZeroRect]; + [button setTag:(NSInteger)butPtr]; macButtonPtr->button = TkMacOSXMakeUncollectable(button); } ComputeNativeButtonGeometry(butPtr); @@ -266,6 +357,52 @@ TkpButtonSetDefaults() /* *---------------------------------------------------------------------- * + * TkMacOSXGetButtonFrame -- + * + * Computes a frame for an NSButton that will correspond to where + * Tk thinks the button is located. + * + * Results: + * Returns an NSRect describing a frame for an NSButton. + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ +NSRect TkMacOSXGetButtonFrame( + TkButton *butPtr) +{ + MacButton *macButtonPtr = (MacButton *) butPtr; + Tk_Window tkwin = butPtr->tkwin; + TkWindow *winPtr = (TkWindow *) tkwin; + if (tkwin) { + MacDrawable *macWin = (MacDrawable *) winPtr->window; + NSView *view = TkMacOSXDrawableView(macWin); + CGFloat viewHeight = [view bounds].size.height; + NSRect 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); + return frame; + } else { + return NSZeroRect; + } +} + +/* + *---------------------------------------------------------------------- + * * DisplayNativeButton -- * * This procedure is invoked to display a button widget. It is @@ -286,7 +423,7 @@ DisplayNativeButton( TkButton *butPtr) { MacButton *macButtonPtr = (MacButton *) butPtr; - NSButton *button = macButtonPtr->button; + TkNSButton *button = macButtonPtr->button; Tk_Window tkwin = butPtr->tkwin; TkWindow *winPtr = (TkWindow *) tkwin; MacDrawable *macWin = (MacDrawable *) winPtr->window; @@ -349,21 +486,8 @@ DisplayNativeButton( } 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]; - } + frame = TkMacOSXGetButtonFrame(butPtr); + [button setFrame:frame]; [button displayRectIgnoringOpacity:[button bounds]]; TkMacOSXRestoreDrawingContext(&dc); #ifdef TK_MAC_DEBUG_BUTTON @@ -396,7 +520,7 @@ ComputeNativeButtonGeometry( TkButton *butPtr) /* Button whose geometry may have changed. */ { MacButton *macButtonPtr = (MacButton *) butPtr; - NSButton *button = macButtonPtr->button; + TkNSButton *button = macButtonPtr->button; NSButtonCell *cell = [button cell]; NSButtonType type = -1; NSBezelStyle style = 0; @@ -1169,6 +1293,7 @@ ComputeUnixButtonGeometry( Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset); } + /* * Local Variables: * mode: objc |