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/*
* Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2014 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 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 THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_COMPOSITING_GRAPHICS_LAYER_UPDATER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_COMPOSITING_GRAPHICS_LAYER_UPDATER_H_
#include "third_party/blink/renderer/platform/graphics/graphics_layer.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
class PaintLayer;
class GraphicsLayerUpdater {
STACK_ALLOCATED();
public:
GraphicsLayerUpdater();
enum UpdateType {
kDoNotForceUpdate,
kForceUpdate,
};
void Update(PaintLayer&,
Vector<PaintLayer*>& layers_needing_paint_invalidation);
bool NeedsRebuildTree() const { return needs_rebuild_tree_; }
#if DCHECK_IS_ON()
static void AssertNeedsToUpdateGraphicsLayerBitsCleared(PaintLayer&);
#endif
class UpdateContext {
public:
UpdateContext();
UpdateContext(const UpdateContext& other, const PaintLayer& layer);
const PaintLayer* CompositingContainer(const PaintLayer& layer) const;
const PaintLayer* CompositingStackingContext() const;
// Offset of this PaintLayer's LayoutObject relative to the position of its
// main GraphicsLayer.
IntSize object_offset_delta;
// The object_offset_delta of the compositing ancestor.
IntSize parent_object_offset_delta;
private:
const PaintLayer* compositing_stacking_context_;
const PaintLayer* compositing_ancestor_;
bool use_slow_path_;
};
private:
void UpdateRecursive(PaintLayer&,
UpdateType,
UpdateContext&,
Vector<PaintLayer*>& layers_needing_paint_invalidation);
bool needs_rebuild_tree_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_COMPOSITING_GRAPHICS_LAYER_UPDATER_H_
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