mirror of https://github.com/axmolengine/axmol.git
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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* Copyright (C) 2008 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 SkBlurDrawLooper_DEFINED
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#define SkBlurDrawLooper_DEFINED
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#include "SkDrawLooper.h"
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#include "SkColor.h"
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class SkMaskFilter;
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class SkColorFilter;
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/** \class SkBlurDrawLooper
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This class draws a shadow of the object (possibly offset), and then draws
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the original object in its original position.
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should there be an option to just draw the shadow/blur layer? webkit?
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*/
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class SK_API SkBlurDrawLooper : public SkDrawLooper {
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public:
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enum BlurFlags {
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kNone_BlurFlag = 0x00,
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/**
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The blur layer's dx/dy/radius aren't affected by the canvas
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transform.
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*/
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kIgnoreTransform_BlurFlag = 0x01,
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kOverrideColor_BlurFlag = 0x02,
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kHighQuality_BlurFlag = 0x04,
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/** mask for all blur flags */
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kAll_BlurFlag = 0x07
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};
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SkBlurDrawLooper(SkScalar radius, SkScalar dx, SkScalar dy, SkColor color,
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uint32_t flags = kNone_BlurFlag);
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virtual ~SkBlurDrawLooper();
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// overrides from SkDrawLooper
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virtual void init(SkCanvas*);
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virtual bool next(SkCanvas*, SkPaint* paint);
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static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) {
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return SkNEW_ARGS(SkBlurDrawLooper, (buffer));
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}
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protected:
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SkBlurDrawLooper(SkFlattenableReadBuffer&);
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// overrides from SkFlattenable
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virtual void flatten(SkFlattenableWriteBuffer& );
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virtual Factory getFactory() { return CreateProc; }
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private:
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SkMaskFilter* fBlur;
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SkColorFilter* fColorFilter;
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SkScalar fDx, fDy;
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SkColor fBlurColor;
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uint32_t fBlurFlags;
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enum State {
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kBeforeEdge,
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kAfterEdge,
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kDone
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};
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State fState;
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typedef SkDrawLooper INHERITED;
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};
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#endif
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