• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1/*
2 * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#import "config.h"
27#import "DragImage.h"
28
29#if ENABLE(DRAG_SUPPORT)
30#import "CachedImage.h"
31#import "Image.h"
32#import "KURL.h"
33#import "ResourceResponse.h"
34
35namespace WebCore {
36
37IntSize dragImageSize(RetainPtr<NSImage> image)
38{
39    return (IntSize)[image.get() size];
40}
41
42void deleteDragImage(RetainPtr<NSImage>)
43{
44    // Since this is a RetainPtr, there's nothing additional we need to do to
45    // delete it. It will be released when it falls out of scope.
46}
47
48RetainPtr<NSImage> scaleDragImage(RetainPtr<NSImage> image, FloatSize scale)
49{
50    NSSize originalSize = [image.get() size];
51    NSSize newSize = NSMakeSize((originalSize.width * scale.width()), (originalSize.height * scale.height()));
52    newSize.width = roundf(newSize.width);
53    newSize.height = roundf(newSize.height);
54    [image.get() setScalesWhenResized:YES];
55    [image.get() setSize:newSize];
56    return image;
57}
58
59RetainPtr<NSImage> dissolveDragImageToFraction(RetainPtr<NSImage> image, float delta)
60{
61    RetainPtr<NSImage> dissolvedImage(AdoptNS, [[NSImage alloc] initWithSize:[image.get() size]]);
62
63    NSPoint point = [image.get() isFlipped] ? NSMakePoint(0, [image.get() size].height) : NSZeroPoint;
64
65    // In this case the dragging image is always correct.
66    [dissolvedImage.get() setFlipped:[image.get() isFlipped]];
67
68    [dissolvedImage.get() lockFocus];
69    [image.get() dissolveToPoint:point fraction: delta];
70    [dissolvedImage.get() unlockFocus];
71
72    [image.get() lockFocus];
73    [dissolvedImage.get() compositeToPoint:point operation:NSCompositeCopy];
74    [image.get() unlockFocus];
75
76    return image;
77}
78
79RetainPtr<NSImage> createDragImageFromImage(Image* image)
80{
81    RetainPtr<NSImage> dragImage(AdoptNS, [image->getNSImage() copy]);
82    [dragImage.get() setSize:(NSSize)(image->size())];
83    return dragImage;
84}
85
86RetainPtr<NSImage> createDragImageIconForCachedImage(CachedImage* image)
87{
88    const String& filename = image->response().suggestedFilename();
89    NSString *extension = nil;
90    int dotIndex = filename.reverseFind('.');
91
92    if (dotIndex > 0 && dotIndex < (int)(filename.length() - 1)) // require that a . exists after the first character and before the last
93        extension = filename.substring(dotIndex + 1);
94    else {
95        // It might be worth doing a further lookup to pull the extension from the MIME type.
96        extension = @"";
97    }
98
99    return [[NSWorkspace sharedWorkspace] iconForFileType:extension];
100}
101
102} // namespace WebCore
103
104#endif // ENABLE(DRAG_SUPPORT)
105