73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
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/*
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Copyright 2010 Google Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 SkGpuCanvas_DEFINED
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#define SkGpuCanvas_DEFINED
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#include "SkCanvas.h"
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class GrContext;
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/**
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* Subclass of canvas that creates devices compatible with the GrContext pass
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* to the canvas' constructor.
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*/
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class SkGpuCanvas : public SkCanvas {
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public:
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/**
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* The GrContext object is reference counted. When passed to our
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* constructor, its reference count is incremented. In our destructor, the
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* GrGpu's reference count will be decremented.
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*/
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explicit SkGpuCanvas(GrContext*);
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virtual ~SkGpuCanvas();
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/**
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* Return our GrContext instance
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*/
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GrContext* context() const { return fContext; }
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/**
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* Override from SkCanvas. Returns true, and if not-null, sets size to
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* be the width/height of our viewport.
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*/
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virtual bool getViewport(SkIPoint* size) const;
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/**
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* Override from SkCanvas. Returns a new device of the correct subclass,
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* as determined by the GrGpu passed to our constructor.
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*/
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virtual SkDevice* createDevice(SkBitmap::Config, int width, int height,
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bool isOpaque, bool isLayer);
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#if 0
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virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
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SaveFlags flags = kARGB_ClipLayer_SaveFlag) {
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return this->save(flags);
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}
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#endif
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private:
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GrContext* fContext;
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typedef SkCanvas INHERITED;
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};
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#endif
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