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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef PictureRenderer_DEFINED
#define PictureRenderer_DEFINED
#include "SkTypes.h"
#include "SkTDArray.h"
#include "SkRefCnt.h"
#if SK_SUPPORT_GPU
#include "GrContextFactory.h"
#include "GrContext.h"
#endif
class SkBitmap;
class SkCanvas;
class SkGLContext;
class SkPicture;
namespace sk_tools {
class PictureRenderer : public SkRefCnt {
public:
enum SkDeviceTypes {
kBitmap_DeviceType,
#if SK_SUPPORT_GPU
kGPU_DeviceType
#endif
};
virtual void init(SkPicture* pict);
virtual void render() = 0;
virtual void end();
void resetState();
SkCanvas* getCanvas() {
return fCanvas.get();
}
void setDeviceType(SkDeviceTypes deviceType) {
fDeviceType = deviceType;
}
bool isUsingBitmapDevice() {
return kBitmap_DeviceType == fDeviceType;
}
#if SK_SUPPORT_GPU
bool isUsingGpuDevice() {
return kGPU_DeviceType == fDeviceType;
}
SkGLContext* getGLContext() {
if (this->isUsingGpuDevice()) {
return fGrContextFactory.getGLContext(GrContextFactory::kNative_GLContextType);
} else {
return NULL;
}
}
#endif
PictureRenderer()
: fPicture(NULL)
, fDeviceType(kBitmap_DeviceType)
#if SK_SUPPORT_GPU
, fGrContext(fGrContextFactory.get(GrContextFactory::kNative_GLContextType))
#endif
{}
protected:
virtual void finishDraw();
SkCanvas* setupCanvas();
SkCanvas* setupCanvas(int width, int height);
SkAutoTUnref<SkCanvas> fCanvas;
SkPicture* fPicture;
SkDeviceTypes fDeviceType;
#if SK_SUPPORT_GPU
GrContextFactory fGrContextFactory;
GrContext* fGrContext;
#endif
private:
typedef SkRefCnt INHERITED;
};
class PipePictureRenderer : public PictureRenderer {
public:
virtual void render() SK_OVERRIDE;
private:
typedef PictureRenderer INHERITED;
};
class SimplePictureRenderer : public PictureRenderer {
public:
virtual void render () SK_OVERRIDE;
private:
typedef PictureRenderer INHERITED;
};
class TiledPictureRenderer : public PictureRenderer {
public:
TiledPictureRenderer();
virtual void init(SkPicture* pict) SK_OVERRIDE;
virtual void render() SK_OVERRIDE;
virtual void end() SK_OVERRIDE;
void drawTiles();
void setTileWidth(int width) {
fTileWidth = width;
}
int getTileWidth() const {
return fTileWidth;
}
void setTileHeight(int height) {
fTileHeight = height;
}
int getTileHeight() const {
return fTileHeight;
}
void setTileWidthPercentage(double percentage) {
fTileWidthPercentage = percentage;
}
double getTileWidthPercentage() const {
return fTileWidthPercentage;
}
void setTileHeightPercentage(double percentage) {
fTileHeightPercentage = percentage;
}
double getTileHeightPercentage() const {
return fTileHeightPercentage;
}
int numTiles() const {
return fTiles.count();
}
~TiledPictureRenderer();
protected:
virtual void finishDraw();
private:
struct TileInfo {
SkBitmap* fBitmap;
SkCanvas* fCanvas;
};
int fTileWidth;
int fTileHeight;
double fTileWidthPercentage;
double fTileHeightPercentage;
SkTDArray<TileInfo> fTiles;
// Clips the tile to an area that is completely in what the SkPicture says is the
// drawn-to area. This is mostly important for tiles on the right and bottom edges
// as they may go over this area and the picture may have some commands that
// draw outside of this area and so should not actually be written.
void clipTile(const TileInfo& tile);
void addTile(int tile_x_start, int tile_y_start);
void setupTiles();
// We manually delete the tiles instead of having a destructor on TileInfo as
// the destructor on TileInfo will be during a realloc. This would result in
// the canvases and bitmaps being prematurely deleted.
void deleteTiles();
void copyTilesToCanvas();
typedef PictureRenderer INHERITED;
};
}
#endif // PictureRenderer_DEFINED
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