Implementing tabs and fixing scrolling.

svn path=/trunk/netsurf/; revision=11396

1 files changed, 68 insertions, 0 deletions

diff --git a/cocoa/PSMTabBarControl/PSMTabDragView.m b/cocoa/PSMTabBarControl/PSMTabDragView.m
new file mode 100644
index 000000000..259116ae8
--- /dev/null
+++ b/cocoa/PSMTabBarControl/PSMTabDragView.m
@@ -0,0 +1,68 @@
+//
+//  PSMTabDragView.m
+//  PSMTabBarControl
+//
+//  Created by Kent Sutherland on 6/17/07.
+//  Copyright 2007 Kent Sutherland. All rights reserved.
+//
+
+#import "PSMTabDragView.h"
+
+
+@implementation PSMTabDragView
+
+- (id)initWithFrame:(NSRect)frame {
+    if ( (self = [super initWithFrame:frame]) ) {
+		_alpha = 1.0;
+    }
+    return self;
+}
+
+- (void)dealloc
+{
+	[_image release];
+	[_alternateImage release];
+	[super dealloc];
+}
+
+- (void)drawRect:(NSRect)rect {
+	//1.0 fade means show the primary image
+	//0.0 fade means show the secondary image
+	CGFloat primaryAlpha = _alpha + 0.001f, alternateAlpha = 1.001f - _alpha;
+	NSRect srcRect;
+	srcRect.origin = NSZeroPoint;
+	srcRect.size = [_image size];
+	
+	[_image drawInRect:[self bounds] fromRect:srcRect operation:NSCompositeSourceOver fraction:primaryAlpha];
+	srcRect.size = [_alternateImage size];
+	[_alternateImage drawInRect:[self bounds] fromRect:srcRect operation:NSCompositeSourceOver fraction:alternateAlpha];
+}
+
+- (void)setFadeValue:(CGFloat)value
+{
+	_alpha = value;
+}
+
+- (NSImage *)image
+{
+	return _image;
+}
+
+- (void)setImage:(NSImage *)image
+{
+	[_image release];
+	_image = [image retain];
+}
+
+- (NSImage *)alternateImage
+{
+	return _alternateImage;
+}
+
+- (void)setAlternateImage:(NSImage *)image
+{
+	[_alternateImage release];
+	_alternateImage = [image retain];
+}
+
+@end