/*
* Copyright (C) 2011 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:
*
* 1. Redistributions of source code must retain the above copyright
* 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
* documentation and/or other materials provided with the distribution.
*
* 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
* 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 WebExternalTextureLayer_h
#define WebExternalTextureLayer_h
#include "WebCommon.h"
#include "WebFloatRect.h"
#include "WebLayer.h"
namespace blink {
class WebExternalTextureLayerClient;
// This class represents a layer that renders a texture that is generated
// externally (not managed by the WebLayerTreeView).
// The texture will be used by the WebLayerTreeView during compositing passes.
// When in single-thread mode, this means during WebLayerTreeView::composite().
// When using the threaded compositor, this can mean at an arbitrary time until
// the WebLayerTreeView is destroyed.
class WebExternalTextureLayer {
public:
virtual ~WebExternalTextureLayer() { }
virtual WebLayer* layer() = 0;
// Clears texture from the layer.
virtual void clearTexture() = 0;
// Sets whether every pixel in this layer is opaque. Defaults to false.
virtual void setOpaque(bool) = 0;
// Sets whether this layer's texture has premultiplied alpha or not. Defaults to true.
virtual void setPremultipliedAlpha(bool) = 0;
// Sets whether the texture should be blended with the background color
// at draw time. Defaults to false.
virtual void setBlendBackgroundColor(bool) = 0;
// Sets whether this context should be rate limited by the compositor. Rate limiting works by blocking
// invalidate() and invalidateRect() calls if the compositor is too many frames behind.
virtual void setRateLimitContext(bool) = 0;
};
} // namespace blink
#endif // WebExternalTextureLayer_h