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