The Tor Browser: gfx/skia/trunk/src/core/SkBitmapProcShader.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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  */

    10 #ifndef SkBitmapProcShader_DEFINED

    11 #define SkBitmapProcShader_DEFINED

    13 #include "SkShader.h"

    14 #include "SkBitmapProcState.h"

    15 #include "SkSmallAllocator.h"

    17 class SkBitmapProcShader : public SkShader {

    18 public:

    19     SkBitmapProcShader(const SkBitmap& src, TileMode tx, TileMode ty);

    21     // overrides from SkShader

    22     virtual bool isOpaque() const SK_OVERRIDE;

    23     virtual bool setContext(const SkBitmap&, const SkPaint&, const SkMatrix&) SK_OVERRIDE;

    24     virtual void endContext() SK_OVERRIDE;

    25     virtual uint32_t getFlags() SK_OVERRIDE { return fFlags; }

    26     virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVERRIDE;

    27     virtual ShadeProc asAShadeProc(void** ctx) SK_OVERRIDE;

    28     virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count) SK_OVERRIDE;

    29     virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*) const SK_OVERRIDE;

    31     static bool CanDo(const SkBitmap&, TileMode tx, TileMode ty);

    33     SK_TO_STRING_OVERRIDE()

    34     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapProcShader)

    36 #if SK_SUPPORT_GPU

    37     GrEffectRef* asNewEffect(GrContext*, const SkPaint&) const SK_OVERRIDE;

    38 #endif

    40 protected:

    41     SkBitmapProcShader(SkReadBuffer& );

    42     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;

    44     SkBitmap          fRawBitmap;   // experimental for RLE encoding

    45     SkBitmapProcState fState;

    46     uint32_t          fFlags;

    48 private:

    49     typedef SkShader INHERITED;

    50 };

    52 // Commonly used allocator. It currently is only used to allocate up to 2 objects. The total

    53 // bytes requested is calculated using one of our large shaders plus the size of an Sk3DBlitter

    54 // in SkDraw.cpp

    55 typedef SkSmallAllocator<2, sizeof(SkBitmapProcShader) + sizeof(void*) * 2> SkTBlitterAllocator;

    57 // If alloc is non-NULL, it will be used to allocate the returned SkShader, and MUST outlive

    58 // the SkShader.

    59 SkShader* CreateBitmapShader(const SkBitmap& src, SkShader::TileMode, SkShader::TileMode,

    60                              SkTBlitterAllocator* alloc);

    62 #endif

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