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      1 /*
      2  * Copyright (C) 2005 Apple Computer, 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  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #import <WebKit/WebNSImageExtras.h>
     30 
     31 #import <WebKit/WebKitLogging.h>
     32 
     33 @implementation NSImage (WebExtras)
     34 
     35 - (void)_web_scaleToMaxSize:(NSSize)size
     36 {
     37     float heightResizeDelta = 0.0f, widthResizeDelta = 0.0f, resizeDelta = 0.0f;
     38     NSSize originalSize = [self size];
     39 
     40     if(originalSize.width > size.width){
     41         widthResizeDelta = size.width / originalSize.width;
     42         resizeDelta = widthResizeDelta;
     43     }
     44 
     45     if(originalSize.height > size.height){
     46         heightResizeDelta = size.height / originalSize.height;
     47         if((resizeDelta == 0.0) || (resizeDelta > heightResizeDelta)){
     48             resizeDelta = heightResizeDelta;
     49         }
     50     }
     51 
     52     if(resizeDelta > 0.0){
     53         NSSize newSize = NSMakeSize((originalSize.width * resizeDelta), (originalSize.height * resizeDelta));
     54         [self setScalesWhenResized:YES];
     55         [self setSize:newSize];
     56     }
     57 }
     58 
     59 - (void)_web_dissolveToFraction:(float)delta
     60 {
     61     NSImage *dissolvedImage = [[NSImage alloc] initWithSize:[self size]];
     62 
     63     NSPoint point = [self isFlipped] ? NSMakePoint(0, [self size].height) : NSZeroPoint;
     64 
     65     // In this case the dragging image is always correct.
     66     [dissolvedImage setFlipped:[self isFlipped]];
     67 
     68     [dissolvedImage lockFocus];
     69     [self dissolveToPoint:point fraction: delta];
     70     [dissolvedImage unlockFocus];
     71 
     72     [self lockFocus];
     73     [dissolvedImage compositeToPoint:point operation:NSCompositeCopy];
     74     [self unlockFocus];
     75 
     76     [dissolvedImage release];
     77 }
     78 
     79 - (void)_web_saveAndOpen
     80 {
     81     char path[] = "/tmp/XXXXXX.tiff";
     82     int fd = mkstemps(path, 5);
     83     if (fd != -1) {
     84         NSData *data = [self TIFFRepresentation];
     85         write(fd, [data bytes], [data length]);
     86         close(fd);
     87         [[NSWorkspace sharedWorkspace] openFile:[NSString stringWithUTF8String:path]];
     88     }
     89 }
     90 
     91 @end
     92