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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SkLayer_DEFINED
#define SkLayer_DEFINED
#include "SkRefCnt.h"
#include "SkTDArray.h"
#include "SkColor.h"
#include "SkMatrix.h"
#include "SkPoint.h"
#include "SkRect.h"
#include "SkSize.h"
class SkCanvas;
class SkLayer : public SkRefCnt {
public:
SkLayer();
SkLayer(const SkLayer&);
virtual ~SkLayer();
SkScalar getOpacity() const { return m_opacity; }
const SkSize& getSize() const { return m_size; }
const SkPoint& getPosition() const { return m_position; }
const SkPoint& getAnchorPoint() const { return m_anchorPoint; }
const SkMatrix& getMatrix() const { return fMatrix; }
const SkMatrix& getChildrenMatrix() const { return fChildrenMatrix; }
SkScalar getWidth() const { return m_size.width(); }
SkScalar getHeight() const { return m_size.height(); }
void setOpacity(SkScalar opacity) { m_opacity = opacity; }
void setSize(SkScalar w, SkScalar h) { m_size.set(w, h); }
void setPosition(SkScalar x, SkScalar y) { m_position.set(x, y); }
void setAnchorPoint(SkScalar x, SkScalar y) { m_anchorPoint.set(x, y); }
void setMatrix(const SkMatrix&);
void setChildrenMatrix(const SkMatrix&);
// children
int countChildren() const;
SkLayer* getChild(int index) const;
SkLayer* addChild(SkLayer* child);
void removeChildren();
// paint method
void draw(SkCanvas*, SkScalar opacity);
void draw(SkCanvas* canvas) {
this->draw(canvas, SK_Scalar1);
}
protected:
virtual void onDraw(SkCanvas*, SkScalar opacity);
private:
SkScalar m_opacity;
SkSize m_size;
SkPoint m_position;
SkPoint m_anchorPoint;
SkMatrix fMatrix;
SkMatrix fChildrenMatrix;
SkTDArray<SkLayer*> m_children;
};
#endif
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