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      1 
      2 /*
      3  * Copyright 2006 The Android Open Source Project
      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 /*  this guy is pulled in multiple times, with the following symbols defined each time:
     11 
     12     #define BITMAP_CLASSNAME_PREFIX(name)           ARGB32##name
     13     #defube BITMAP_PIXEL_TO_PMCOLOR(bitmap, x, y)   *bitmap.getAddr32(x, y)
     14 */
     15 
     16 class BITMAP_CLASSNAME_PREFIX(_Point_Sampler) : public SkBitmapSampler {
     17 public:
     18     BITMAP_CLASSNAME_PREFIX(_Point_Sampler)(const SkBitmap& bm, SkShader::TileMode tmx, SkShader::TileMode tmy)
     19         : SkBitmapSampler(bm, false, tmx, tmy)
     20     {
     21     }
     22 
     23     virtual SkPMColor sample(SkFixed x, SkFixed y) const
     24     {
     25         x = fTileProcX(SkFixedFloor(x), fMaxX);
     26         y = fTileProcY(SkFixedFloor(y), fMaxY);
     27         return BITMAP_PIXEL_TO_PMCOLOR(fBitmap, x, y);
     28     }
     29 };
     30 
     31 
     32 class BITMAP_CLASSNAME_PREFIX(_Point_Clamp_Sampler) : public SkBitmapSampler {
     33 public:
     34     BITMAP_CLASSNAME_PREFIX(_Point_Clamp_Sampler)(const SkBitmap& bm)
     35         : SkBitmapSampler(bm, false, SkShader::kClamp_TileMode, SkShader::kClamp_TileMode)
     36     {
     37     }
     38 
     39     virtual SkPMColor sample(SkFixed x, SkFixed y) const
     40     {
     41         x = do_clamp(SkFixedFloor(x), fMaxX);
     42         y = do_clamp(SkFixedFloor(y), fMaxY);
     43         return BITMAP_PIXEL_TO_PMCOLOR(fBitmap, x, y);
     44     }
     45 };
     46 
     47 class BITMAP_CLASSNAME_PREFIX(_Point_Repeat_Pow2_Sampler) : public SkBitmapSampler {
     48 public:
     49     BITMAP_CLASSNAME_PREFIX(_Point_Repeat_Pow2_Sampler)(const SkBitmap& bm)
     50         : SkBitmapSampler(bm, false, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode)
     51     {
     52     }
     53 
     54     virtual SkPMColor sample(SkFixed x, SkFixed y) const
     55     {
     56         x = do_repeat_pow2(SkFixedFloor(x), fMaxX);
     57         y = do_repeat_pow2(SkFixedFloor(y), fMaxY);
     58         return BITMAP_PIXEL_TO_PMCOLOR(fBitmap, x, y);
     59     }
     60 };
     61 
     62 class BITMAP_CLASSNAME_PREFIX(_Point_Repeat_Mod_Sampler) : public SkBitmapSampler {
     63 public:
     64     BITMAP_CLASSNAME_PREFIX(_Point_Repeat_Mod_Sampler)(const SkBitmap& bm)
     65         : SkBitmapSampler(bm, false, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode)
     66     {
     67     }
     68 
     69     virtual SkPMColor sample(SkFixed x, SkFixed y) const
     70     {
     71         x = do_repeat_mod(SkFixedFloor(x), fMaxX);
     72         y = do_repeat_mod(SkFixedFloor(y), fMaxY);
     73         return BITMAP_PIXEL_TO_PMCOLOR(fBitmap, x, y);
     74     }
     75 };
     76 
     77 class BITMAP_CLASSNAME_PREFIX(_Point_Mirror_Pow2_Sampler) : public SkBitmapSampler {
     78 public:
     79     BITMAP_CLASSNAME_PREFIX(_Point_Mirror_Pow2_Sampler)(const SkBitmap& bm)
     80         : SkBitmapSampler(bm, false, SkShader::kMirror_TileMode, SkShader::kMirror_TileMode)
     81     {
     82     }
     83 
     84     virtual SkPMColor sample(SkFixed x, SkFixed y) const
     85     {
     86         x = do_mirror_pow2(SkFixedFloor(x), fMaxX);
     87         y = do_mirror_pow2(SkFixedFloor(y), fMaxY);
     88         return BITMAP_PIXEL_TO_PMCOLOR(fBitmap, x, y);
     89     }
     90 };
     91 
     92 class BITMAP_CLASSNAME_PREFIX(_Point_Mirror_Mod_Sampler) : public SkBitmapSampler {
     93 public:
     94     BITMAP_CLASSNAME_PREFIX(_Point_Mirror_Mod_Sampler)(const SkBitmap& bm)
     95         : SkBitmapSampler(bm, false, SkShader::kMirror_TileMode, SkShader::kMirror_TileMode)
     96     {
     97     }
     98 
     99     virtual SkPMColor sample(SkFixed x, SkFixed y) const
    100     {
    101         x = do_mirror_mod(SkFixedFloor(x), fMaxX);
    102         y = do_mirror_mod(SkFixedFloor(y), fMaxY);
    103         return BITMAP_PIXEL_TO_PMCOLOR(fBitmap, x, y);
    104     }
    105 };
    106 
    107 #undef BITMAP_CLASSNAME_PREFIX
    108 #undef BITMAP_PIXEL_TO_PMCOLOR
    109