1 files changed, 170 insertions, 0 deletions
diff --git a/frontends/cocoa/PSMTabBarControl/PSMRolloverButton.m b/frontends/cocoa/PSMTabBarControl/PSMRolloverButton.m
new file mode 100644
index 000000000..8886560c7
--- /dev/null
+++ b/frontends/cocoa/PSMTabBarControl/PSMRolloverButton.m
@@ -0,0 +1,170 @@
+//
+//  PSMOverflowPopUpButton.m
+//  NetScrape
+//
+//  Created by John Pannell on 8/4/04.
+//  Copyright 2004 Positive Spin Media. All rights reserved.
+//
+
+#import "PSMRolloverButton.h"
+
+@implementation PSMRolloverButton
+
+- (void)awakeFromNib {
+	if([[self superclass] instancesRespondToSelector:@selector(awakeFromNib)]) {
+		[super awakeFromNib];
+	}
+
+	[[NSNotificationCenter defaultCenter] addObserver:self
+	 selector:@selector(rolloverFrameDidChange:)
+	 name:NSViewFrameDidChangeNotification
+	 object:self];
+	[self setPostsFrameChangedNotifications:YES];
+	[self resetCursorRects];
+
+	_myTrackingRectTag = -1;
+}
+
+- (void)dealloc {
+	[[NSNotificationCenter defaultCenter] removeObserver:self];
+
+	[self removeTrackingRect];
+
+	[super dealloc];
+}
+
+// the regular image
+- (void)setUsualImage:(NSImage *)newImage {
+	[newImage retain];
+	[_usualImage release];
+	_usualImage = newImage;
+
+	[self setImage:_usualImage];
+}
+
+- (NSImage *)usualImage {
+	return _usualImage;
+}
+
+- (void)setRolloverImage:(NSImage *)newImage {
+	[newImage retain];
+	[_rolloverImage release];
+	_rolloverImage = newImage;
+}
+
+- (NSImage *)rolloverImage {
+	return _rolloverImage;
+}
+
+//Remove old tracking rects when we change superviews
+- (void)viewWillMoveToSuperview:(NSView *)newSuperview {
+	[self removeTrackingRect];
+
+	[super viewWillMoveToSuperview:newSuperview];
+}
+
+- (void)viewDidMoveToSuperview {
+	[super viewDidMoveToSuperview];
+
+	[self resetCursorRects];
+}
+
+- (void)viewWillMoveToWindow:(NSWindow *)newWindow {
+	[self removeTrackingRect];
+
+	[super viewWillMoveToWindow:newWindow];
+}
+
+- (void)viewDidMoveToWindow {
+	[super viewDidMoveToWindow];
+
+	[self resetCursorRects];
+}
+
+- (void)rolloverFrameDidChange:(NSNotification *)inNotification {
+	[self resetCursorRects];
+}
+
+- (void)addTrackingRect {
+	// assign a tracking rect to watch for mouse enter/exit
+	NSRect trackRect = [self bounds];
+	NSPoint localPoint = [self convertPoint:[[self window] convertScreenToBase:[NSEvent mouseLocation]]
+						  fromView:nil];
+	BOOL mouseInside = NSPointInRect(localPoint, trackRect);
+
+	_myTrackingRectTag = [self addTrackingRect:trackRect owner:self userData:nil assumeInside:mouseInside];
+	if(mouseInside) {
+		//[self mouseEntered:nil];
+		[self setImage:_rolloverImage];
+	} else{
+		//[self mouseExited:nil];
+		[self setImage:_usualImage];
+	}
+}
+
+- (void)removeTrackingRect {
+	if(_myTrackingRectTag != -1) {
+		[self removeTrackingRect:_myTrackingRectTag];
+	}
+	_myTrackingRectTag = -1;
+}
+
+// override for rollover effect
+- (void)mouseEntered:(NSEvent *)theEvent;
+{
+	// set rollover image
+	[self setImage:_rolloverImage];
+
+	[super mouseEntered:theEvent];
+}
+
+- (void)mouseExited:(NSEvent *)theEvent;
+{
+	// restore usual image
+	[self setImage:_usualImage];
+
+	[super mouseExited:theEvent];
+}
+
+- (void)resetCursorRects {
+	// called when the button rect has been changed
+	[self removeTrackingRect];
+	[self addTrackingRect];
+}
+
+- (void)setFrame:(NSRect)rect {
+	[super setFrame:rect];
+	[self resetCursorRects];
+}
+
+- (void)setBounds:(NSRect)rect {
+	[super setBounds:rect];
+	[self resetCursorRects];
+}
+
+#pragma mark -
+#pragma mark Archiving
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+	[super encodeWithCoder:aCoder];
+	if([aCoder allowsKeyedCoding]) {
+		[aCoder encodeObject:_rolloverImage forKey:@"rolloverImage"];
+		[aCoder encodeObject:_usualImage forKey:@"usualImage"];
+		[aCoder encodeInt64:_myTrackingRectTag forKey:@"myTrackingRectTag"];
+	}
+}
+
+- (id)initWithCoder:(NSCoder *)aDecoder {
+	self = [super initWithCoder:aDecoder];
+	if(self) {
+		if([aDecoder allowsKeyedCoding]) {
+			_rolloverImage = [[aDecoder decodeObjectForKey:@"rolloverImage"] retain];
+			_usualImage = [[aDecoder decodeObjectForKey:@"usualImage"] retain];
+			_myTrackingRectTag = [aDecoder decodeInt64ForKey:@"myTrackingRectTag"];
+		}
+	}
+	return self;
+}
+
+
+@end