1 files changed, 60 insertions, 0 deletions
diff --git a/frontends/cocoa/PSMTabBarControl/PSMTabDragView.m b/frontends/cocoa/PSMTabBarControl/PSMTabDragView.m
new file mode 100644
index 000000000..4f6ce9131
--- /dev/null
+++ b/frontends/cocoa/PSMTabBarControl/PSMTabDragView.m
@@ -0,0 +1,60 @@
+//
+//  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)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:NSCompositingOperationSourceOver fraction:primaryAlpha];
+    srcRect.size = [_alternateImage size];
+    [_alternateImage drawInRect:[self bounds] fromRect:srcRect operation:NSCompositingOperationSourceOver fraction:alternateAlpha];
+}
+
+- (void)setFadeValue:(CGFloat)value
+{
+    _alpha = value;
+}
+
+- (NSImage *)image
+{
+    return _image;
+}
+
+- (void)setImage:(NSImage *)image
+{
+    _image = image;
+}
+
+- (NSImage *)alternateImage
+{
+    return _alternateImage;
+}
+
+- (void)setAlternateImage:(NSImage *)image
+{
+    _alternateImage = image;
+}
+
+@end