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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef LayerPainter_h
#define LayerPainter_h
#include "core/rendering/LayerFragment.h"
#include "core/rendering/LayerPaintingInfo.h"
namespace blink {
class ClipRect;
class LayoutPoint;
class RenderLayer;
class LayerPainter {
public:
LayerPainter(RenderLayer& renderLayer) : m_renderLayer(renderLayer) { }
// The paint() method paints the layers that intersect the damage rect from back to front.
// paint() assumes that the caller will clip to the bounds of damageRect if necessary.
void paint(GraphicsContext*, const LayoutRect& damageRect, PaintBehavior = PaintBehaviorNormal, RenderObject* paintingRoot = 0, PaintLayerFlags = 0);
// paintLayer() assumes that the caller will clip to the bounds of the painting dirty if necessary.
void paintLayer(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
// paintLayerContents() assumes that the caller will clip to the bounds of the painting dirty rect if necessary.
void paintLayerContents(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
void paintOverlayScrollbars(GraphicsContext*, const LayoutRect& damageRect, PaintBehavior, RenderObject* paintingRoot = 0);
private:
enum ClipState { HasNotClipped, HasClipped };
void paintLayerContentsAndReflection(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
void paintLayerWithTransform(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
void paintFragmentByApplyingTransform(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags, const LayoutPoint& fragmentTranslation);
void paintChildren(unsigned childrenToVisit, GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
void paintPaginatedChildLayer(RenderLayer* childLayer, GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
void paintChildLayerIntoColumns(RenderLayer* childLayer, GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags, const Vector<RenderLayer*>& columnLayers, size_t columnIndex);
bool atLeastOneFragmentIntersectsDamageRect(LayerFragments&, const LayerPaintingInfo&, PaintLayerFlags, const LayoutPoint& offsetFromRoot);
void paintFragmentWithPhase(PaintPhase, const LayerFragment&, GraphicsContext*, const ClipRect&, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer, PaintLayerFlags, ClipState);
void paintBackgroundForFragments(const LayerFragments&, GraphicsContext*,
const LayoutRect& transparencyPaintDirtyRect, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer, PaintLayerFlags);
void paintForegroundForFragments(const LayerFragments&, GraphicsContext*,
const LayoutRect& transparencyPaintDirtyRect, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer,
bool selectionOnly, PaintLayerFlags);
void paintForegroundForFragmentsWithPhase(PaintPhase, const LayerFragments&, GraphicsContext*, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer, PaintLayerFlags, ClipState);
void paintOutlineForFragments(const LayerFragments&, GraphicsContext*, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer, PaintLayerFlags);
void paintOverflowControlsForFragments(const LayerFragments&, GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
void paintMaskForFragments(const LayerFragments&, GraphicsContext*, const LayerPaintingInfo&, RenderObject* paintingRootForRenderer, PaintLayerFlags);
void paintChildClippingMaskForFragments(const LayerFragments&, GraphicsContext*, const LayerPaintingInfo&, RenderObject* paintingRootForRenderer, PaintLayerFlags);
static bool needsToClip(const LayerPaintingInfo& localPaintingInfo, const ClipRect&);
// Returns whether this layer should be painted during sofware painting (i.e., not via calls from CompositedLayerMapping to draw into composited
// layers).
bool shouldPaintLayerInSoftwareMode(const LayerPaintingInfo&, PaintLayerFlags paintFlags);
RenderLayer& m_renderLayer;
};
} // namespace blink
#endif // LayerPainter_h
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