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+/*
+ * 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.
+ */
+
+#ifndef WebImage_h
+#define WebImage_h
+
+#include "WebCommon.h"
+#include "WebSize.h"
+
+#if WEBKIT_USING_SKIA
+class SkBitmap;
+#endif
+
+namespace WebKit {
+
+ class WebImagePixels;
+ class WebImagePrivate;
+
+ // A container for an ARGB bitmap.
+ class WebImage {
+ public:
+ ~WebImage() { reset(); }
+
+ WebImage() : m_private(0) { }
+ WebImage(const WebImage& image) : m_private(0) { assign(image); }
+
+ WebImage& operator=(const WebImage& image)
+ {
+ assign(image);
+ return *this;
+ }
+
+ WEBKIT_API void reset();
+ WEBKIT_API WebSize size() const;
+
+ WebImagePixels pixels() const;
+ bool isNull() const { return m_private == 0; }
+
+#if WEBKIT_USING_SKIA
+ WebImage(const SkBitmap& bitmap) : m_private(0)
+ {
+ assign(bitmap);
+ }
+
+ WebImage& operator=(const SkBitmap& bitmap)
+ {
+ assign(bitmap);
+ return *this;
+ }
+
+ WEBKIT_API operator SkBitmap() const;
+#endif
+
+ private:
+ friend class WebImagePixels;
+
+ WEBKIT_API void assign(const WebImage&);
+ WEBKIT_API const void* lockPixels();
+ WEBKIT_API void unlockPixels();
+
+#if WEBKIT_USING_SKIA
+ WEBKIT_API void assign(const SkBitmap&);
+#endif
+
+ WebImagePrivate* m_private;
+ };
+
+ class WebImagePixels {
+ public:
+ WebImagePixels(WebImage* image) : m_image(image)
+ {
+ m_data = m_image->lockPixels();
+ }
+
+ WebImagePixels(const WebImagePixels& other) : m_image(other.m_image)
+ {
+ m_data = m_image->lockPixels();
+ }
+
+ ~WebImagePixels() { m_image->unlockPixels(); }
+
+ const void* get() const { return m_data; }
+ operator const void*() const { return m_data; }
+
+ private:
+ WebImagePixels& operator=(const WebImagePixels&);
+
+ WebImage* m_image;
+ const void* m_data;
+ };
+
+ inline WebImagePixels WebImage::pixels() const
+ {
+ return WebImagePixels(const_cast<WebImage*>(this));
+ }
+
+} // namespace WebKit
+
+#endif