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47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
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/*
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* Copyright 2006 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkTransparentShader_DEFINED
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#define SkTransparentShader_DEFINED
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#include "SkShader.h"
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class SkTransparentShader : public SkShader {
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public:
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SkTransparentShader() {}
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virtual uint32_t getFlags();
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virtual bool setContext( const SkBitmap& device,
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const SkPaint& paint,
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const SkMatrix& matrix);
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virtual void shadeSpan(int x, int y, SkPMColor[], int count);
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virtual void shadeSpan16(int x, int y, uint16_t span[], int count);
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// overrides for SkFlattenable
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virtual Factory getFactory() { return Create; }
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virtual void flatten(SkFlattenableWriteBuffer& buffer) {
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this->INHERITED::flatten(buffer);
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}
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private:
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// these are a cache from the call to setContext()
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const SkBitmap* fDevice;
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uint8_t fAlpha;
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SkTransparentShader(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
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static SkFlattenable* Create(SkFlattenableReadBuffer& buffer) {
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return SkNEW_ARGS(SkTransparentShader, (buffer));
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}
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typedef SkShader INHERITED;
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};
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#endif
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