This CL implements the first draft of Canvas 2D Context Attributes, aka getContext('2d', { alpha: f…

Source/core/html/canvas/Canvas2DContextAttributes.h

Index: Source/core/html/canvas/Canvas2DContextAttributes.h
diff --git a/Source/core/platform/graphics/opentype/OpenTypeSanitizer.h b/Source/core/html/canvas/Canvas2DContextAttributes.h
similarity index 68%
copy from Source/core/platform/graphics/opentype/OpenTypeSanitizer.h
copy to Source/core/html/canvas/Canvas2DContextAttributes.h
index cca70cfe78c04510e12f553ca9210eca617662a8..dbf15864a60d216576bf37656f0861f5596addee 100644
--- a/Source/core/platform/graphics/opentype/OpenTypeSanitizer.h
+++ b/Source/core/html/canvas/Canvas2DContextAttributes.h
@@ -1,19 +1,15 @@
 /*
- * Copyright (C) 2009 Google Inc. All rights reserved.
+ * Copyright (c) 2013, 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
@@ -28,28 +24,31 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef OpenTypeSanitizer_h
-#define OpenTypeSanitizer_h
+#ifndef Canvas2DContextAttributes_h
+#define Canvas2DContextAttributes_h
 
-#include <wtf/Forward.h>
+#include "CanvasContextAttributes.h"
+#include <wtf/PassRefPtr.h>
 
 namespace WebCore {
 
-class SharedBuffer;
-
-class OpenTypeSanitizer {
+class Canvas2DContextAttributes : public CanvasContextAttributes {
 public:
-    explicit OpenTypeSanitizer(SharedBuffer* buffer)
-        : m_buffer(buffer)
-    {
-    }
+    virtual ~Canvas2DContextAttributes();
+
+    // Create a new attributes object
+    static PassRefPtr<Canvas2DContextAttributes> create();
+
+    // Whether or not the drawing buffer has an alpha channel; default=true
+    bool alpha() const;
+    void setAlpha(bool);
 
-    PassRefPtr<SharedBuffer> sanitize();
+protected:
+    Canvas2DContextAttributes();
 
-private:
-    SharedBuffer* const m_buffer;
+    bool m_alpha;
 };
 
 } // namespace WebCore
 
-#endif // OpenTypeSanitizer_h
+#endif // Canvas2DContextAttributes_h