1/*
2 * Copyright (C) 2006, 2007, 2008, 2013 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 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 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#include "config.h"
27#include "Image.h"
28
29#include "BitmapImage.h"
30#include "BitmapInfo.h"
31#include "GraphicsContextCG.h"
32#include <ApplicationServices/ApplicationServices.h>
33#include <windows.h>
34#include <wtf/RetainPtr.h>
35#include <wtf/text/WTFString.h>
36
37namespace WebCore {
38
39PassRefPtr<BitmapImage> BitmapImage::create(HBITMAP hBitmap)
40{
41    DIBSECTION dibSection;
42    if (!GetObject(hBitmap, sizeof(DIBSECTION), &dibSection))
43        return 0;
44
45    ASSERT(dibSection.dsBm.bmBitsPixel == 32);
46    if (dibSection.dsBm.bmBitsPixel != 32)
47        return 0;
48
49    ASSERT(dibSection.dsBm.bmBits);
50    if (!dibSection.dsBm.bmBits)
51        return 0;
52
53    RetainPtr<CGContextRef> bitmapContext = adoptCF(CGBitmapContextCreate(dibSection.dsBm.bmBits, dibSection.dsBm.bmWidth, dibSection.dsBm.bmHeight, 8,
54        dibSection.dsBm.bmWidthBytes, deviceRGBColorSpaceRef(), kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst));
55
56    // The BitmapImage takes ownership of this.
57    CGImageRef cgImage = CGBitmapContextCreateImage(bitmapContext.get());
58
59    return adoptRef(new BitmapImage(cgImage));
60}
61
62bool BitmapImage::getHBITMAPOfSize(HBITMAP bmp, const IntSize* size)
63{
64    ASSERT(bmp);
65
66    BITMAP bmpInfo;
67    GetObject(bmp, sizeof(BITMAP), &bmpInfo);
68
69    ASSERT(bmpInfo.bmBitsPixel == 32);
70    int bufferSize = bmpInfo.bmWidthBytes * bmpInfo.bmHeight;
71
72    CGContextRef cgContext = CGBitmapContextCreate(bmpInfo.bmBits, bmpInfo.bmWidth, bmpInfo.bmHeight,
73        8, bmpInfo.bmWidthBytes, deviceRGBColorSpaceRef(), kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst);
74
75    GraphicsContext gc(cgContext);
76
77    FloatSize imageSize = BitmapImage::size();
78    if (size)
79        drawFrameMatchingSourceSize(&gc, FloatRect(0.0f, 0.0f, bmpInfo.bmWidth, bmpInfo.bmHeight), *size, ColorSpaceDeviceRGB, CompositeCopy);
80    else
81        draw(&gc, FloatRect(0.0f, 0.0f, bmpInfo.bmWidth, bmpInfo.bmHeight), FloatRect(0.0f, 0.0f, imageSize.width(), imageSize.height()), ColorSpaceDeviceRGB, CompositeCopy, BlendModeNormal, ImageOrientationDescription());
82
83    // Do cleanup
84    CGContextRelease(cgContext);
85
86    return true;
87}
88
89void BitmapImage::drawFrameMatchingSourceSize(GraphicsContext* ctxt, const FloatRect& dstRect, const IntSize& srcSize, ColorSpace styleColorSpace, CompositeOperator compositeOp)
90{
91    size_t frames = frameCount();
92    for (size_t i = 0; i < frames; ++i) {
93        CGImageRef image = frameAtIndex(i);
94        if (image && CGImageGetHeight(image) == static_cast<size_t>(srcSize.height()) && CGImageGetWidth(image) == static_cast<size_t>(srcSize.width())) {
95            size_t currentFrame = m_currentFrame;
96            m_currentFrame = i;
97            draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, srcSize.width(), srcSize.height()), styleColorSpace, compositeOp, BlendModeNormal, ImageOrientationDescription());
98            m_currentFrame = currentFrame;
99            return;
100        }
101    }
102
103    // No image of the correct size was found, fallback to drawing the current frame
104    FloatSize imageSize = BitmapImage::size();
105    draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, imageSize.width(), imageSize.height()), styleColorSpace, compositeOp, BlendModeNormal, ImageOrientationDescription());
106}
107
108} // namespace WebCore
109