skia2/include/core/SkImage.h
skia.committer@gmail.com a27096b474 Sanitizing source files in Skia_Nightly_House_Keeping
git-svn-id: http://skia.googlecode.com/svn/trunk@5346 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-08-30 14:38:00 +00:00

104 lines
2.5 KiB
C++

/*
* 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 SkImage_DEFINED
#define SkImage_DEFINED
#include "SkRefCnt.h"
#include "SkScalar.h"
class SkData;
class SkCanvas;
class SkPaint;
class SkShader;
class GrContext;
struct GrPlatformTextureDesc;
// need for TileMode
#include "SkShader.h"
////// EXPERIMENTAL
class SkColorSpace;
/**
* SkImage is an abstraction for drawing a rectagle of pixels, though the
* particular type of image could be actually storing its data on the GPU, or
* as drawing commands (picture or PDF or otherwise), ready to be played back
* into another canvas.
*
* The content of SkImage is always immutable, though the actual storage may
* change, if for example that image can be re-created via encoded data or
* other means.
*/
class SkImage : public SkRefCnt {
public:
SK_DECLARE_INST_COUNT(SkImage)
enum ColorType {
kAlpha_8_ColorType,
kRGB_565_ColorType,
kRGBA_8888_ColorType,
kBGRA_8888_ColorType,
kPMColor_ColorType,
kLastEnum_ColorType = kPMColor_ColorType
};
enum AlphaType {
kIgnore_AlphaType,
kOpaque_AlphaType,
kPremul_AlphaType,
kUnpremul_AlphaType,
kLastEnum_AlphaType = kUnpremul_AlphaType
};
struct Info {
int fWidth;
int fHeight;
ColorType fColorType;
AlphaType fAlphaType;
};
static SkImage* NewRasterCopy(const Info&, SkColorSpace*, const void* pixels, size_t rowBytes);
static SkImage* NewRasterData(const Info&, SkColorSpace*, SkData* pixels, size_t rowBytes);
static SkImage* NewEncodedData(SkData*);
static SkImage* NewTexture(GrContext*, const GrPlatformTextureDesc&);
int width() const { return fWidth; }
int height() const { return fHeight; }
uint32_t uniqueID() const { return fUniqueID; }
SkShader* newShaderClamp() const;
SkShader* newShader(SkShader::TileMode, SkShader::TileMode) const;
void draw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*);
protected:
SkImage(int width, int height) :
fWidth(width),
fHeight(height),
fUniqueID(NextUniqueID()) {
SkASSERT(width >= 0);
SkASSERT(height >= 0);
}
private:
const int fWidth;
const int fHeight;
const uint32_t fUniqueID;
static uint32_t NextUniqueID();
typedef SkRefCnt INHERITED;
};
#endif