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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 TextureMapper_h
#define TextureMapper_h
#include "BitmapTexture.h"
#include "Color.h"
#include "IntRect.h"
#include "IntSize.h"
#include "TransformationMatrix.h"
/*
TextureMapper is a mechanism that enables hardware acceleration of CSS animations (accelerated compositing) without
a need for a platform specific scene-graph library like CoreAnimations or QGraphicsView.
*/
namespace WebCore {
class BitmapTexturePool;
class GraphicsLayer;
class TextureMapper;
class FilterOperations;
class TextureMapper {
WTF_MAKE_FAST_ALLOCATED;
public:
enum PaintFlag {
PaintingMirrored = 1 << 0,
};
enum WrapMode {
StretchWrap,
RepeatWrap
};
typedef unsigned PaintFlags;
static std::unique_ptr<TextureMapper> create();
explicit TextureMapper();
virtual ~TextureMapper();
enum ExposedEdges {
NoEdges = 0,
LeftEdge = 1 << 0,
RightEdge = 1 << 1,
TopEdge = 1 << 2,
BottomEdge = 1 << 3,
AllEdges = LeftEdge | RightEdge | TopEdge | BottomEdge,
};
virtual void drawBorder(const Color&, float borderWidth, const FloatRect&, const TransformationMatrix&) = 0;
virtual void drawNumber(int number, const Color&, const FloatPoint&, const TransformationMatrix&) = 0;
virtual void drawTexture(const BitmapTexture&, const FloatRect& target, const TransformationMatrix& modelViewMatrix = TransformationMatrix(), float opacity = 1.0f, unsigned exposedEdges = AllEdges) = 0;
virtual void drawSolidColor(const FloatRect&, const TransformationMatrix&, const Color&) = 0;
// makes a surface the target for the following drawTexture calls.
virtual void bindSurface(BitmapTexture* surface) = 0;
virtual void beginClip(const TransformationMatrix&, const FloatRect&) = 0;
virtual void endClip() = 0;
virtual IntRect clipBounds() = 0;
virtual PassRefPtr<BitmapTexture> createTexture() = 0;
virtual void beginPainting(PaintFlags = 0) { }
virtual void endPainting() { }
void setMaskMode(bool m) { m_isMaskMode = m; }
virtual IntSize maxTextureSize() const = 0;
virtual PassRefPtr<BitmapTexture> acquireTextureFromPool(const IntSize&, const BitmapTexture::Flags = BitmapTexture::SupportsAlpha);
void setPatternTransform(const TransformationMatrix& p) { m_patternTransform = p; }
void setWrapMode(WrapMode m) { m_wrapMode = m; }
protected:
std::unique_ptr<BitmapTexturePool> m_texturePool;
bool isInMaskMode() const { return m_isMaskMode; }
WrapMode wrapMode() const { return m_wrapMode; }
const TransformationMatrix& patternTransform() const { return m_patternTransform; }
private:
#if USE(TEXTURE_MAPPER_GL)
static std::unique_ptr<TextureMapper> platformCreateAccelerated();
#else
static std::unique_ptr<TextureMapper> platformCreateAccelerated()
{
return nullptr;
}
#endif
bool m_isMaskMode { false };
TransformationMatrix m_patternTransform;
WrapMode m_wrapMode { StretchWrap };
};
}
#endif
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