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/*
Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef TextureMapperNode_h
#define TextureMapperNode_h
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "GraphicsLayer.h"
#include "Image.h"
#include "TextureMapper.h"
#include "TextureMapperPlatformLayer.h"
#include "Timer.h"
#include "TransformOperations.h"
#include "TranslateTransformOperation.h"
#include "UnitBezier.h"
#include <wtf/CurrentTime.h>
#include <wtf/HashMap.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class TextureMapperNode;
class TextureMapperCache;
class GraphicsLayerTextureMapper;
struct TexmapPaintOptions {
BitmapTexture* surface;
TextureMapper* textureMapper;
TextureMapperNode* rootLayer;
float opacity;
IntRect scissorRect;
IntRect visibleRect;
bool isSurface;
TextureMapperCache* cache;
};
class TextureMapperNode : public TextureMapperContentLayer {
public:
// This set of flags help us defer which properties of the layer have been
// modified by the compositor, so we can know what to look for in the next flush.
enum ChangeMask {
NoChanges = 0,
ParentChange = (1L << 0),
ChildrenChange = (1L << 1),
MaskLayerChange = (1L << 2),
PositionChange = (1L << 3),
AnchorPointChange = (1L << 4),
SizeChange = (1L << 5),
TransformChange = (1L << 6),
ContentChange = (1L << 7),
ContentsOrientationChange = (1L << 9),
OpacityChange = (1L << 10),
ContentsRectChange = (1L << 11),
Preserves3DChange = (1L << 12),
MasksToBoundsChange = (1L << 13),
DrawsContentChange = (1L << 14),
ContentsOpaqueChange = (1L << 15),
BackfaceVisibilityChange = (1L << 16),
ChildrenTransformChange = (1L << 17),
DisplayChange = (1L << 18),
BackgroundColorChange = (1L << 19),
ReplicaLayerChange = (1L << 20)
};
// The compositor lets us special-case images and colors, so we try to do so.
enum ContentType { HTMLContentType, DirectImageContentType, ColorContentType, MediaContentType, Canvas3DContentType};
struct ContentData {
IntRect needsDisplayRect;
bool needsDisplay;
Color backgroundColor;
ContentType contentType;
RefPtr<Image> image;
TextureMapperMediaLayer* media;
ContentData()
: needsDisplay(false)
, contentType(HTMLContentType)
, image(0)
, media(0)
{
}
};
TextureMapperNode();
virtual ~TextureMapperNode();
void syncCompositingState(GraphicsLayerTextureMapper*, bool recursive);
protected:
// Reimps from TextureMapperContentLayer
virtual IntSize size() const { return m_size; }
virtual void setPlatformLayerClient(TextureMapperLayerClient*);
virtual void paint(TextureMapper*, const TextureMapperContentLayer::PaintOptions&);
private:
TextureMapperNode* rootLayer();
void clearDirectImage();
void computeTransformations();
IntSize nearestSurfaceSize() const;
void computeReplicaTransform();
void computeLayerType();
void computeLocalTransform();
void flattenTo2DSpaceIfNecessary();
void initializeTextureMapper(TextureMapper*);
void invalidateTransform();
void notifyChange(ChangeMask);
void setNeedsDisplay();
void setNeedsDisplayInRect(IntRect);
void performPostSyncOperations();
void syncCompositingStateInternal(GraphicsLayerTextureMapper*, bool recursive, TextureMapper*);
void syncCompositingStateSelf(GraphicsLayerTextureMapper* graphicsLayer, TextureMapper* textureMapper);
TextureMapperCache* cache();
void paintRecursive(TexmapPaintOptions options);
bool paintReplica(const TexmapPaintOptions& options);
void paintSurface(const TexmapPaintOptions& options);
void paintSelf(const TexmapPaintOptions& options);
void paintSelfAndChildren(const TexmapPaintOptions& options, TexmapPaintOptions& optionsForDescendants);
void uploadTextureFromContent(TextureMapper* textureMapper, const IntRect& visibleRect, GraphicsLayer* layer);
int countDescendantsWithContent() const;
bool hasSurfaceDescendants() const;
TextureMapper* textureMapper();
static TextureMapperNode* toTextureMapperNode(GraphicsLayer*);
static int compareGraphicsLayersZValue(const void* a, const void* b);
static void sortByZOrder(Vector<TextureMapperNode* >& array, int first, int last);
struct TransformData {
TransformationMatrix base, target, replica, forDescendants, perspective, local;
IntRect targetBoundingRect;
float centerZ;
bool dirty, localDirty, perspectiveDirty;
IntRect boundingRectFromRoot;
TransformData() : dirty(true), localDirty(true), perspectiveDirty(true) { }
};
TransformData m_transforms;
enum LayerType {
DefaultLayer,
RootLayer,
ScissorLayer,
ClipLayer,
TransparencyLayer
};
LayerType m_layerType;
inline IntRect targetRect() const
{
return m_currentContent.contentType == HTMLContentType ? entireRect() : m_state.contentsRect;
}
inline IntRect entireRect() const
{
return IntRect(0, 0, m_size.width(), m_size.height());
}
inline IntRect replicaRect() const
{
return m_layerType == TransparencyLayer ? IntRect(0, 0, m_nearestSurfaceSize.width(), m_nearestSurfaceSize.height()) : entireRect();
}
RefPtr<BitmapTexture> m_texture;
RefPtr<BitmapTexture> m_surface, m_replicaSurface;
ContentData m_currentContent;
Vector<TextureMapperNode*> m_children;
TextureMapperNode* m_parent;
TextureMapperNode* m_effectTarget;
IntSize m_size, m_nearestSurfaceSize;
String m_name;
TextureMapperLayerClient* m_platformClient;
struct State {
FloatPoint pos;
FloatPoint3D anchorPoint;
FloatSize size;
TransformationMatrix transform;
TransformationMatrix childrenTransform;
Color backgroundColor;
Color currentColor;
GraphicsLayer::CompositingCoordinatesOrientation geoOrientation;
GraphicsLayer::CompositingCoordinatesOrientation contentsOrientation;
float opacity;
IntRect contentsRect;
int descendantsWithContent;
TextureMapperNode* maskLayer;
TextureMapperNode* replicaLayer;
bool preserves3D;
bool masksToBounds;
bool drawsContent;
bool contentsOpaque;
bool backfaceVisibility;
bool visible;
bool dirty;
bool tiled;
bool hasSurfaceDescendants;
IntRect visibleRect;
State()
: opacity(1.f)
, descendantsWithContent(0)
, maskLayer(0)
, replicaLayer(0)
, preserves3D(false)
, masksToBounds(false)
, drawsContent(false)
, contentsOpaque(false)
, backfaceVisibility(false)
, visible(true)
, dirty(true)
, tiled(false)
, hasSurfaceDescendants(false)
{
}
};
State m_state;
TextureMapperCache* m_cache;
};
}
#endif // TextureMapperNode_h
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