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/*
* Copyright (C) 2009 Apple 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 INC. ``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 COMPUTER, INC. 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 GraphicsLayerClient_h
#define GraphicsLayerClient_h
#include "platform/PlatformExport.h"
#include "wtf/text/WTFString.h"
namespace blink {
class GraphicsContext;
class GraphicsLayer;
class IntRect;
enum GraphicsLayerPaintingPhaseFlags {
GraphicsLayerPaintBackground = (1 << 0),
GraphicsLayerPaintForeground = (1 << 1),
GraphicsLayerPaintMask = (1 << 2),
GraphicsLayerPaintOverflowContents = (1 << 3),
GraphicsLayerPaintCompositedScroll = (1 << 4),
GraphicsLayerPaintChildClippingMask = (1 << 5),
GraphicsLayerPaintAllWithOverflowClip = (GraphicsLayerPaintBackground | GraphicsLayerPaintForeground | GraphicsLayerPaintMask)
};
typedef unsigned GraphicsLayerPaintingPhase;
enum {
LayerTreeNormal = 0,
LayerTreeIncludesDebugInfo = 1 << 0, // Dump extra debugging info like layer addresses.
LayerTreeIncludesPaintInvalidationRects = 1 << 1,
LayerTreeIncludesPaintingPhases = 1 << 2,
LayerTreeIncludesRootLayer = 1 << 3,
LayerTreeIncludesClipAndScrollParents = 1 << 4,
LayerTreeIncludesPaintInvalidationObjects = 1 << 5,
LayerTreeIncludesCompositingReasons = 1 << 6,
};
typedef unsigned LayerTreeFlags;
class PLATFORM_EXPORT GraphicsLayerClient {
public:
virtual ~GraphicsLayerClient() {}
// Callback for when compositor animation started.
virtual void notifyAnimationStarted(const GraphicsLayer*, double monotonicTime, int group) { }
virtual void notifyFirstPaint() { }
virtual void notifyFirstTextPaint() { }
virtual void notifyFirstImagePaint() { }
virtual IntRect computeInterestRect(const GraphicsLayer*, const IntRect& previousInterestRect) const = 0;
virtual bool needsRepaint() const { return true; }
virtual void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect& interestRect) const = 0;
virtual bool isTrackingPaintInvalidations() const { return false; }
virtual String debugName(const GraphicsLayer*) const = 0;
#if ENABLE(ASSERT)
// CompositedLayerMapping overrides this to verify that it is not
// currently painting contents. An ASSERT fails, if it is.
// This is executed in GraphicsLayer construction and destruction
// to verify that we don't create or destroy GraphicsLayers
// while painting.
virtual void verifyNotPainting() { }
#endif
};
} // namespace blink
#endif // GraphicsLayerClient_h
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