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      1 
      2 /*
      3  * Copyright 2010 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 
     10 
     11 #ifndef SkGr_DEFINED
     12 #define SkGr_DEFINED
     13 
     14 #include <stddef.h>
     15 
     16 // Gr headers
     17 #include "GrTypes.h"
     18 #include "GrContext.h"
     19 #include "GrFontScaler.h"
     20 
     21 // skia headers
     22 #include "SkBitmap.h"
     23 #include "SkPath.h"
     24 #include "SkPoint.h"
     25 #include "SkRegion.h"
     26 #include "SkClipStack.h"
     27 
     28 #if (GR_DEBUG && defined(SK_RELEASE)) || (GR_RELEASE && defined(SK_DEBUG))
     29 //    #error "inconsistent GR_DEBUG and SK_DEBUG"
     30 #endif
     31 
     32 ////////////////////////////////////////////////////////////////////////////////
     33 // Sk to Gr Type conversions
     34 
     35 GR_STATIC_ASSERT((int)kZero_GrBlendCoeff == (int)SkXfermode::kZero_Coeff);
     36 GR_STATIC_ASSERT((int)kOne_GrBlendCoeff  == (int)SkXfermode::kOne_Coeff);
     37 GR_STATIC_ASSERT((int)kSC_GrBlendCoeff   == (int)SkXfermode::kSC_Coeff);
     38 GR_STATIC_ASSERT((int)kISC_GrBlendCoeff  == (int)SkXfermode::kISC_Coeff);
     39 GR_STATIC_ASSERT((int)kDC_GrBlendCoeff   == (int)SkXfermode::kDC_Coeff);
     40 GR_STATIC_ASSERT((int)kIDC_GrBlendCoeff  == (int)SkXfermode::kIDC_Coeff);
     41 GR_STATIC_ASSERT((int)kSA_GrBlendCoeff   == (int)SkXfermode::kSA_Coeff);
     42 GR_STATIC_ASSERT((int)kISA_GrBlendCoeff  == (int)SkXfermode::kISA_Coeff);
     43 GR_STATIC_ASSERT((int)kDA_GrBlendCoeff   == (int)SkXfermode::kDA_Coeff);
     44 GR_STATIC_ASSERT((int)kIDA_GrBlendCoeff  == (int)SkXfermode::kIDA_Coeff);
     45 
     46 #define sk_blend_to_grblend(X) ((GrBlendCoeff)(X))
     47 
     48 ///////////////////////////////////////////////////////////////////////////////
     49 
     50 #include "SkColorPriv.h"
     51 
     52 /**
     53  *  Convert the SkBitmap::Config to the corresponding PixelConfig, or
     54  *  kUnknown_PixelConfig if the conversion cannot be done.
     55  */
     56 GrPixelConfig SkBitmapConfig2GrPixelConfig(SkBitmap::Config);
     57 
     58 static inline GrColor SkColor2GrColor(SkColor c) {
     59     SkPMColor pm = SkPreMultiplyColor(c);
     60     unsigned r = SkGetPackedR32(pm);
     61     unsigned g = SkGetPackedG32(pm);
     62     unsigned b = SkGetPackedB32(pm);
     63     unsigned a = SkGetPackedA32(pm);
     64     return GrColorPackRGBA(r, g, b, a);
     65 }
     66 
     67 ////////////////////////////////////////////////////////////////////////////////
     68 
     69 bool GrIsBitmapInCache(const GrContext*, const SkBitmap&, const GrTextureParams*);
     70 
     71 GrTexture* GrLockAndRefCachedBitmapTexture(GrContext*, const SkBitmap&, const GrTextureParams*);
     72 
     73 void GrUnlockAndUnrefCachedBitmapTexture(GrTexture*);
     74 
     75 ////////////////////////////////////////////////////////////////////////////////
     76 // Classes
     77 
     78 class SkGlyphCache;
     79 
     80 class SkGrFontScaler : public GrFontScaler {
     81 public:
     82     explicit SkGrFontScaler(SkGlyphCache* strike);
     83     virtual ~SkGrFontScaler();
     84 
     85     // overrides
     86     virtual const GrKey* getKey();
     87     virtual GrMaskFormat getMaskFormat();
     88     virtual bool getPackedGlyphBounds(GrGlyph::PackedID, SkIRect* bounds);
     89     virtual bool getPackedGlyphImage(GrGlyph::PackedID, int width, int height,
     90                                      int rowBytes, void* image);
     91     virtual bool getGlyphPath(uint16_t glyphID, SkPath*);
     92 
     93 private:
     94     SkGlyphCache* fStrike;
     95     GrKey*  fKey;
     96 //    DECLARE_INSTANCE_COUNTER(SkGrFontScaler);
     97 };
     98 
     99 ////////////////////////////////////////////////////////////////////////////////
    100 
    101 #endif
    102