Port WebImage to CG and rework the Skia version so that WebImage just has a...

webkit/api/src/WebImageCG.cpp

+/*
+ * 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 <CoreGraphics/CGImage.h>
+
+#include "WebData.h"
+#include "WebSize.h"
+
+#include "ImageSource.h"
+#include "SharedBuffer.h"
+#include <wtf/PassRefPtr.h>
+#include <wtf/RetainPtr.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+WebImage WebImage::fromData(const WebData& data, const WebSize& desiredSize)
+{
+    // FIXME: ImageSource does not support picking a matching frame.  We'll
+    // likely need to enumerate the frames ourselves.
+
+    ImageSource source;
+    source.setData(PassRefPtr<SharedBuffer>(data).get(), true);
+    if (!source.isSizeAvailable())
+        return WebImage();
+
+    RetainPtr<CGImageRef> frame0(AdoptCF, source.createFrameAtIndex(0));
+    if (!frame0)
+        return WebImage();
+
+    return WebImage(frame0.get());
+}
+
+void WebImage::reset()
+{
+    CGImageRelease(m_imageRef);
+    m_imageRef = 0;
+}
+
+void WebImage::assign(const WebImage& image)
+{
+    assign(image.m_imageRef);
+}
+
+bool WebImage::isNull() const
+{
+    return m_imageRef != 0;
+}
+
+WebSize WebImage::size() const
+{
+    return WebSize(CGImageGetWidth(m_imageRef), CGImageGetHeight(m_imageRef));
+}
+
+void WebImage::assign(CGImageRef imageRef)
+{
+    CGImageRelease(m_imageRef);
+    CGImageRetain(m_imageRef = imageRef);
+}
+
+} // namespace WebKit