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