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Diffstat (limited to 'WebKit/chromium/src/WebImageSkia.cpp')
-rw-r--r-- | WebKit/chromium/src/WebImageSkia.cpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/WebKit/chromium/src/WebImageSkia.cpp b/WebKit/chromium/src/WebImageSkia.cpp new file mode 100644 index 0000000..0684b58 --- /dev/null +++ b/WebKit/chromium/src/WebImageSkia.cpp @@ -0,0 +1,121 @@ +/* + * Copyright (C) 2009 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "WebImage.h" + +#include "Image.h" +#include "ImageSource.h" +#include "NativeImageSkia.h" +#include "SharedBuffer.h" + +#include "WebData.h" +#include "WebSize.h" + +#include <wtf/OwnPtr.h> +#include <wtf/PassRefPtr.h> + +using namespace WebCore; + +namespace WebKit { + +WebImage WebImage::fromData(const WebData& data, const WebSize& desiredSize) +{ + ImageSource source; + source.setData(PassRefPtr<SharedBuffer>(data).get(), true); + if (!source.isSizeAvailable()) + return WebImage(); + + // Frames are arranged by decreasing size, then decreasing bit depth. + // Pick the frame closest to |desiredSize|'s area without being smaller, + // which has the highest bit depth. + const size_t frameCount = source.frameCount(); + size_t index = 0; // Default to first frame if none are large enough. + int frameAreaAtIndex = 0; + for (size_t i = 0; i < frameCount; ++i) { + const IntSize frameSize = source.frameSizeAtIndex(i); + if (WebSize(frameSize) == desiredSize) { + index = i; + break; // Perfect match. + } + + const int frameArea = frameSize.width() * frameSize.height(); + if (frameArea < (desiredSize.width * desiredSize.height)) + break; // No more frames that are large enough. + + if (!i || (frameArea < frameAreaAtIndex)) { + index = i; // Closer to desired area than previous best match. + frameAreaAtIndex = frameArea; + } + } + + OwnPtr<NativeImageSkia> frame(source.createFrameAtIndex(index)); + if (!frame.get()) + return WebImage(); + + return WebImage(*frame); +} + +void WebImage::reset() +{ + m_bitmap.reset(); +} + +void WebImage::assign(const WebImage& image) +{ + m_bitmap = image.m_bitmap; +} + +bool WebImage::isNull() const +{ + return m_bitmap.isNull(); +} + +WebSize WebImage::size() const +{ + return WebSize(m_bitmap.width(), m_bitmap.height()); +} + +WebImage::WebImage(const PassRefPtr<Image>& image) +{ + operator=(image); +} + +WebImage& WebImage::operator=(const PassRefPtr<Image>& image) +{ + NativeImagePtr p; + if (image.get() && (p = image->nativeImageForCurrentFrame())) + assign(*p); + else + reset(); + return *this; +} + +} // namespace WebKit |