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/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkGr_DEFINED
#define SkGr_DEFINED
#include <stddef.h>
// Gr headers
#include "GrTypes.h"
#include "GrContext.h"
#include "GrFontScaler.h"
// skia headers
#include "SkBitmap.h"
#include "SkPath.h"
#include "SkPoint.h"
#include "SkRegion.h"
#include "SkClipStack.h"
////////////////////////////////////////////////////////////////////////////////
// Sk to Gr Type conversions
GR_STATIC_ASSERT((int)kZero_GrBlendCoeff == (int)SkXfermode::kZero_Coeff);
GR_STATIC_ASSERT((int)kOne_GrBlendCoeff == (int)SkXfermode::kOne_Coeff);
GR_STATIC_ASSERT((int)kSC_GrBlendCoeff == (int)SkXfermode::kSC_Coeff);
GR_STATIC_ASSERT((int)kISC_GrBlendCoeff == (int)SkXfermode::kISC_Coeff);
GR_STATIC_ASSERT((int)kDC_GrBlendCoeff == (int)SkXfermode::kDC_Coeff);
GR_STATIC_ASSERT((int)kIDC_GrBlendCoeff == (int)SkXfermode::kIDC_Coeff);
GR_STATIC_ASSERT((int)kSA_GrBlendCoeff == (int)SkXfermode::kSA_Coeff);
GR_STATIC_ASSERT((int)kISA_GrBlendCoeff == (int)SkXfermode::kISA_Coeff);
GR_STATIC_ASSERT((int)kDA_GrBlendCoeff == (int)SkXfermode::kDA_Coeff);
GR_STATIC_ASSERT((int)kIDA_GrBlendCoeff == (int)SkXfermode::kIDA_Coeff);
#define sk_blend_to_grblend(X) ((GrBlendCoeff)(X))
///////////////////////////////////////////////////////////////////////////////
#include "SkColorPriv.h"
/**
* Convert the SkBitmap::Config to the corresponding PixelConfig, or
* kUnknown_PixelConfig if the conversion cannot be done.
*/
GrPixelConfig SkBitmapConfig2GrPixelConfig(SkBitmap::Config);
GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType, SkAlphaType);
static inline GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info) {
return SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType());
}
bool GrPixelConfig2ColorType(GrPixelConfig, SkColorType*);
static inline GrColor SkColor2GrColor(SkColor c) {
SkPMColor pm = SkPreMultiplyColor(c);
unsigned r = SkGetPackedR32(pm);
unsigned g = SkGetPackedG32(pm);
unsigned b = SkGetPackedB32(pm);
unsigned a = SkGetPackedA32(pm);
return GrColorPackRGBA(r, g, b, a);
}
////////////////////////////////////////////////////////////////////////////////
bool GrIsBitmapInCache(const GrContext*, const SkBitmap&, const GrTextureParams*);
GrTexture* GrLockAndRefCachedBitmapTexture(GrContext*, const SkBitmap&, const GrTextureParams*);
void GrUnlockAndUnrefCachedBitmapTexture(GrTexture*);
////////////////////////////////////////////////////////////////////////////////
class SkGpuDevice;
// Converts a SkPaint to a GrPaint, ignoring the SkPaint's shader.
// justAlpha indicates that the SkPaint's alpha should be used rather than the color.
// Callers may subsequently modify the GrPaint. Setting constantColor indicates
// that the final paint will draw the same color at every pixel. This allows
// an optimization where the the color filter can be applied to the SkPaint's
// color once while converting to GrPaint and then ignored.
void SkPaint2GrPaintNoShader(SkGpuDevice* dev, const SkPaint& skPaint, bool justAlpha,
bool constantColor, GrPaint* grPaint);
// This function is similar to skPaint2GrPaintNoShader but also converts
// skPaint's shader to a GrTexture/GrEffectStage if possible.
// constantColor has the same meaning as in skPaint2GrPaintNoShader.
void SkPaint2GrPaintShader(SkGpuDevice* dev, const SkPaint& skPaint,
bool constantColor, GrPaint* grPaint);
////////////////////////////////////////////////////////////////////////////////
// Classes
class SkGlyphCache;
class SkGrFontScaler : public GrFontScaler {
public:
explicit SkGrFontScaler(SkGlyphCache* strike);
virtual ~SkGrFontScaler();
// overrides
virtual const GrKey* getKey();
virtual GrMaskFormat getMaskFormat();
virtual bool getPackedGlyphBounds(GrGlyph::PackedID, SkIRect* bounds) SK_OVERRIDE;
virtual bool getPackedGlyphImage(GrGlyph::PackedID, int width, int height,
int rowBytes, void* image) SK_OVERRIDE;
virtual bool getPackedGlyphDFBounds(GrGlyph::PackedID, SkIRect* bounds) SK_OVERRIDE;
virtual bool getPackedGlyphDFImage(GrGlyph::PackedID, int width, int height,
void* image) SK_OVERRIDE;
virtual bool getGlyphPath(uint16_t glyphID, SkPath*);
private:
SkGlyphCache* fStrike;
GrKey* fKey;
// DECLARE_INSTANCE_COUNTER(SkGrFontScaler);
};
////////////////////////////////////////////////////////////////////////////////
#endif
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