The Tor Browser: gfx/skia/trunk/include/core/SkEmptyShader.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     2 /*

     3  * Copyright 2011 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  */

    11 #ifndef SkEmptyShader_DEFINED

    12 #define SkEmptyShader_DEFINED

    14 #include "SkShader.h"

    16 /**

    17  *  \class SkEmptyShader

    18  *  A Shader that always draws nothing. Its setContext always returns false,

    19  *  so it never expects that its shadeSpan() methods will get called.

    20  */

    21 class SK_API SkEmptyShader : public SkShader {

    22 public:

    23     SkEmptyShader() {}

    25     virtual uint32_t getFlags() SK_OVERRIDE;

    26     virtual uint8_t getSpan16Alpha() const SK_OVERRIDE;

    27     virtual bool setContext(const SkBitmap&, const SkPaint&,

    28                             const SkMatrix&) SK_OVERRIDE;

    29     virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE;

    30     virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;

    31     virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) SK_OVERRIDE;

    33     SK_TO_STRING_OVERRIDE()

    34     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkEmptyShader)

    36 protected:

    37     SkEmptyShader(SkReadBuffer& buffer) : INHERITED(buffer) {}

    39 private:

    40     typedef SkShader INHERITED;

    41 };

    43 #endif

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