mix-blend-mode implementation for accelerated layers - blink part

public/platform/WebLayer.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
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  * modification, are permitted provided that the following conditions
  * are met:
  *
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  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
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  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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 #ifndef WebLayer_h
 #define WebLayer_h
 
 #include "WebAnimation.h"
+#include "WebBlendMode.h"
 #include "WebColor.h"
 #include "WebCommon.h"
 #include "WebCompositingReasons.h"
 #include "WebPoint.h"
 #include "WebRect.h"
 #include "WebString.h"
 #include "WebVector.h"
 
 class SkMatrix44;
 class SkImageFilter;
@@ skipping 39 matching lines @@
 
     virtual void setMasksToBounds(bool) = 0;
     virtual bool masksToBounds() const = 0;
 
     virtual void setMaskLayer(WebLayer*) = 0;
     virtual void setReplicaLayer(WebLayer*) = 0;
 
     virtual void setOpacity(float) = 0;
     virtual float opacity() const = 0;
 
+    // The blending formula to be used for mixing colors of
+    // FIXME: Make pure virtual after implementation lands.
+    virtual void setBlendMode(WebBlendMode) { }
+    virtual WebBlendMode blendMode() const { return WebBlendModeNormal; }
+
+    // The layers within an isolated group should be composited over
+    // a transparent black initial backdrop. It will create a separate rendering
+    // surfece when required. http://dev.w3.org/fxtf/compositing-1/

[enne (OOO), 2013/11/07 22:59:07]

Typo, although I think saying that it will create a surface is an implementation
detail.

[rosca, 2013/11/08 15:36:32]

I removed the comments, I think the functions are self-explanatory and other
setters/getters here don't have comments as well.

+    // FIXME: Make pure virtual after implementation lands.
+    virtual void setIsRootForIsolatedGroup(bool) { }
+    virtual bool isRootForIsolatedGroup() { return false; }
+
     virtual void setOpaque(bool) = 0;
     virtual bool opaque() const = 0;
 
     virtual void setPosition(const WebFloatPoint&) = 0;
     virtual WebFloatPoint position() const = 0;
 
     virtual void setSublayerTransform(const SkMatrix44&) = 0;
     virtual SkMatrix44 sublayerTransform() const = 0;
 
     virtual void setTransform(const SkMatrix44&) = 0;
@@ skipping 115 matching lines @@
 
     // True if the layer is not part of a tree attached to a WebLayerTreeView.
     virtual bool isOrphan() const = 0;
 
     virtual void setWebLayerClient(WebLayerClient*) = 0;
 };
 
 } // namespace WebKit
 
 #endif // WebLayer_h