2 * Copyright (C) 2005 Apple Computer, Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
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11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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27 #import "ScalingImageView.h"
29 @implementation ScalingImageView
32 This class offers two behaviors different from the standard NSImageView
33 (and which were not available w/o subclassing)
34 1. Scale an image proportionally up to fit a larger view (NSImageView refuses)
35 2. Draw a background color w/o needing to show a bezel.
38 - (void)drawRect:(NSRect)dirtyRect
40 [[NSColor whiteColor] set];
41 NSRectFill(dirtyRect);
43 NSSize imageSize = [[self image] size];
45 if ([self imageScaling] == NSScaleProportionally && imageSize.width && imageSize.height) {
46 float widthScale = [self bounds].size.width / imageSize.width;
47 float heightScale = [self bounds].size.height / imageSize.height;
48 scale = MIN(widthScale, heightScale);
51 float scaledHeight = imageSize.height * scale;
52 NSRect destRect = NSMakeRect(0,[self bounds].size.height - scaledHeight,imageSize.width * scale, scaledHeight);
53 [[self image] drawInRect:destRect
54 fromRect:NSMakeRect(0,0,imageSize.width, imageSize.height) operation:NSCompositeSourceOver fraction:1.0];