From f85335a7f9fdbff012409bb2af8fecc81740eab0 Mon Sep 17 00:00:00 2001
From: Sven Weidauer <sven.weidauer@gmail.com>
Date: Wed, 19 Jan 2011 20:19:43 +0000
Subject: Implementing tabs and fixing scrolling.

svn path=/trunk/netsurf/; revision=11396
---
 cocoa/PSMTabBarControl/PSMRolloverButton.m | 183 +++++++++++++++++++++++++++++
 1 file changed, 183 insertions(+)
 create mode 100644 cocoa/PSMTabBarControl/PSMRolloverButton.m

(limited to 'cocoa/PSMTabBarControl/PSMRolloverButton.m')

diff --git a/cocoa/PSMTabBarControl/PSMRolloverButton.m b/cocoa/PSMTabBarControl/PSMRolloverButton.m
new file mode 100644
index 000000000..988abbb2a
--- /dev/null
+++ b/cocoa/PSMTabBarControl/PSMRolloverButton.m
@@ -0,0 +1,183 @@
+//
+//  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];
+	else
+		[self mouseExited:nil];
+}
+
+- (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 encodeInteger:_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 decodeIntegerForKey:@"myTrackingRectTag"];
+        }
+    }
+    return self;
+}
+
+
+@end
-- 
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