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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"
#include "GrClipIterator.h"
#include "GrPath.h"
// skia headers
#include "SkBitmap.h"
#include "SkPath.h"
#include "SkPoint.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkClipStack.h"
#if (GR_DEBUG && defined(SK_RELEASE)) || (GR_RELEASE && defined(SK_DEBUG))
// #error "inconsistent GR_DEBUG and SK_DEBUG"
#endif
////////////////////////////////////////////////////////////////////////////////
// Sk to Gr Type conversions
GR_STATIC_ASSERT((int)GrSamplerState::kClamp_WrapMode == (int)SkShader::kClamp_TileMode);
GR_STATIC_ASSERT((int)GrSamplerState::kRepeat_WrapMode ==(
int)SkShader::kRepeat_TileMode);
GR_STATIC_ASSERT((int)GrSamplerState::kMirror_WrapMode ==
(int)SkShader::kMirror_TileMode);
#define sk_tile_mode_to_grwrap(X) ((GrSamplerState::WrapMode)(X))
GR_STATIC_ASSERT((int)kZero_BlendCoeff == (int)SkXfermode::kZero_Coeff);
GR_STATIC_ASSERT((int)kOne_BlendCoeff == (int)SkXfermode::kOne_Coeff);
GR_STATIC_ASSERT((int)kSC_BlendCoeff == (int)SkXfermode::kSC_Coeff);
GR_STATIC_ASSERT((int)kISC_BlendCoeff == (int)SkXfermode::kISC_Coeff);
GR_STATIC_ASSERT((int)kDC_BlendCoeff == (int)SkXfermode::kDC_Coeff);
GR_STATIC_ASSERT((int)kIDC_BlendCoeff == (int)SkXfermode::kIDC_Coeff);
GR_STATIC_ASSERT((int)kSA_BlendCoeff == (int)SkXfermode::kSA_Coeff);
GR_STATIC_ASSERT((int)kISA_BlendCoeff == (int)SkXfermode::kISA_Coeff);
GR_STATIC_ASSERT((int)kDA_BlendCoeff == (int)SkXfermode::kDA_Coeff);
GR_STATIC_ASSERT((int)kIDA_BlendCoeff == (int)SkXfermode::kIDA_Coeff);
#define sk_blend_to_grblend(X) ((GrBlendCoeff)(X))
GR_STATIC_ASSERT((int)SkPath::kMove_Verb == (int)kMove_PathCmd);
GR_STATIC_ASSERT((int)SkPath::kLine_Verb == (int)kLine_PathCmd);
GR_STATIC_ASSERT((int)SkPath::kQuad_Verb == (int)kQuadratic_PathCmd);
GR_STATIC_ASSERT((int)SkPath::kCubic_Verb == (int)kCubic_PathCmd);
GR_STATIC_ASSERT((int)SkPath::kClose_Verb == (int)kClose_PathCmd);
GR_STATIC_ASSERT((int)SkPath::kDone_Verb == (int)kEnd_PathCmd);
#define sk_path_verb_to_gr_path_command(X) ((GrPathCmd)(X))
///////////////////////////////////////////////////////////////////////////////
#include "SkColorPriv.h"
class SkGr {
public:
/**
* Convert the SkBitmap::Config to the corresponding PixelConfig, or
* kUnknown_PixelConfig if the conversion cannot be done.
*/
static GrPixelConfig BitmapConfig2PixelConfig(SkBitmap::Config,
bool isOpaque);
static GrPixelConfig Bitmap2PixelConfig(const SkBitmap& bm) {
return BitmapConfig2PixelConfig(bm.config(), bm.isOpaque());
}
static 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);
}
};
////////////////////////////////////////////////////////////////////////////////
// Classes
class SkGrClipIterator : public GrClipIterator {
public:
SkGrClipIterator() { fClipStack = NULL; fCurr = NULL; }
SkGrClipIterator(const SkClipStack& clipStack) { this->reset(clipStack); }
void reset(const SkClipStack& clipStack);
// overrides
virtual bool isDone() const SK_OVERRIDE { return NULL == fCurr; }
virtual void next() SK_OVERRIDE { fCurr = fIter.next(); }
virtual void rewind() SK_OVERRIDE { this->reset(*fClipStack); }
virtual GrClipType getType() const SK_OVERRIDE;
virtual GrSetOp getOp() const SK_OVERRIDE;
virtual bool getDoAA() const SK_OVERRIDE;
virtual void getRect(GrRect* rect) const SK_OVERRIDE {
if (!fCurr->fRect) {
rect->setEmpty();
} else {
*rect = *fCurr->fRect;
}
}
virtual const GrPath* getPath() SK_OVERRIDE {
return fCurr->fPath;
}
virtual GrPathFill getPathFill() const SK_OVERRIDE;
private:
const SkClipStack* fClipStack;
SkClipStack::B2FIter fIter;
// SkClipStack's auto advances on each get
// so we store the current pos here.
const SkClipStack::B2FIter::Clip* fCurr;
};
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, GrIRect* bounds);
virtual bool getPackedGlyphImage(GrGlyph::PackedID, int width, int height,
int rowBytes, void* image);
virtual bool getGlyphPath(uint16_t glyphID, GrPath*);
private:
SkGlyphCache* fStrike;
GrKey* fKey;
// DECLARE_INSTANCE_COUNTER(SkGrFontScaler);
};
////////////////////////////////////////////////////////////////////////////////
// Helper functions
static const GrContext::TextureKey gUNCACHED_KEY = ~0;
GrContext::TextureCacheEntry sk_gr_create_bitmap_texture(GrContext* ctx,
GrContext::TextureKey key,
const GrSamplerState* sampler,
const SkBitmap& bitmap);
#endif
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