1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/gfx/skia/trunk/include/core/SkEmptyShader.h Wed Dec 31 06:09:35 2014 +0100 1.3 @@ -0,0 +1,43 @@ 1.4 + 1.5 +/* 1.6 + * Copyright 2011 Google Inc. 1.7 + * 1.8 + * Use of this source code is governed by a BSD-style license that can be 1.9 + * found in the LICENSE file. 1.10 + */ 1.11 + 1.12 + 1.13 + 1.14 +#ifndef SkEmptyShader_DEFINED 1.15 +#define SkEmptyShader_DEFINED 1.16 + 1.17 +#include "SkShader.h" 1.18 + 1.19 +/** 1.20 + * \class SkEmptyShader 1.21 + * A Shader that always draws nothing. Its setContext always returns false, 1.22 + * so it never expects that its shadeSpan() methods will get called. 1.23 + */ 1.24 +class SK_API SkEmptyShader : public SkShader { 1.25 +public: 1.26 + SkEmptyShader() {} 1.27 + 1.28 + virtual uint32_t getFlags() SK_OVERRIDE; 1.29 + virtual uint8_t getSpan16Alpha() const SK_OVERRIDE; 1.30 + virtual bool setContext(const SkBitmap&, const SkPaint&, 1.31 + const SkMatrix&) SK_OVERRIDE; 1.32 + virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE; 1.33 + virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE; 1.34 + virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) SK_OVERRIDE; 1.35 + 1.36 + SK_TO_STRING_OVERRIDE() 1.37 + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkEmptyShader) 1.38 + 1.39 +protected: 1.40 + SkEmptyShader(SkReadBuffer& buffer) : INHERITED(buffer) {} 1.41 + 1.42 +private: 1.43 + typedef SkShader INHERITED; 1.44 +}; 1.45 + 1.46 +#endif