56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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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{
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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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{
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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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