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/*
* Copyright (C) 2009 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 LayerAndroid_h
#define LayerAndroid_h
#if USE(ACCELERATED_COMPOSITING)
#include "RefPtr.h"
#include "SkColor.h"
#include "SkLayer.h"
#include "StringHash.h"
#include <wtf/HashMap.h>
class SkCanvas;
class SkMatrix;
class SkPicture;
namespace android {
class DrawExtra;
}
using namespace android;
struct SkLength {
enum SkLengthType { Undefined, Auto, Relative, Percent, Fixed, Static, Intrinsic, MinIntrinsic };
SkLengthType type;
SkScalar value;
SkLength() {
type = Undefined;
value = 0;
}
bool defined() const {
if (type == Undefined)
return false;
return true;
}
float calcFloatValue(float max) const {
switch (type) {
case Percent:
return (max * value) / 100.0f;
case Fixed:
return value;
default:
return value;
}
}
};
namespace WebCore {
class AndroidAnimation;
class LayerAndroid : public SkLayer {
public:
LayerAndroid(bool isRootLayer);
LayerAndroid(const LayerAndroid& layer);
LayerAndroid(SkPicture* );
virtual ~LayerAndroid();
static int instancesCount();
void setTranslation(SkScalar x, SkScalar y) { m_translation.set(x, y); }
void setRotation(SkScalar a) { m_angleTransform = a; m_doRotation = true; }
void setScale(SkScalar x, SkScalar y) { m_scale.set(x, y); }
SkPoint translation() const { return m_translation; }
SkRect bounds() const {
const SkPoint& pos = this->getPosition();
const SkSize& size = this->getSize();
SkRect rect;
rect.set(pos.fX, pos.fY,
pos.fX + size.width(),
pos.fY + size.height());
rect.offset(m_translation.fX, m_translation.fY);
return rect;
}
void setFixedPosition(SkLength left, // CSS left property
SkLength top, // CSS top property
SkLength right, // CSS right property
SkLength bottom, // CSS bottom property
int width, // visible overflow width
int height) { // visible overflow height
m_fixedLeft = left;
m_fixedTop = top;
m_fixedRight = right;
m_fixedBottom = bottom;
m_fixedWidth = width;
m_fixedHeight = height;
m_isFixed = true;
}
void setBackgroundColor(SkColor color);
void setMaskLayer(LayerAndroid*);
void setMasksToBounds(bool);
void setIsRootLayer(bool isRootLayer) { m_isRootLayer = isRootLayer; }
SkPicture* recordContext();
void addAnimation(PassRefPtr<AndroidAnimation> anim);
void removeAnimation(const String& name);
bool evaluateAnimations() const;
bool evaluateAnimations(double time) const;
bool hasAnimations() const;
SkPicture* picture() const { return m_recordingPicture; }
void dumpLayers(FILE*, int indentLevel) const;
/** Call this with the current viewport (scrolling, zoom) to update its
position attribute, so that later calls like bounds() will report the
corrected position (assuming the layer had fixed-positioning).
This call is recursive, so it should be called on the root of the
hierarchy.
*/
void updatePositions(const SkRect& viewPort);
void clipArea(SkTDArray<SkRect>* region) const;
const LayerAndroid* find(int x, int y) const;
const LayerAndroid* findById(int uniqueID) const;
LayerAndroid* getChild(int index) const {
return static_cast<LayerAndroid*>(this->INHERITED::getChild(index));
}
void setExtra(DrawExtra* extra); // does not assign ownership
int uniqueId() const { return m_uniqueId; }
protected:
virtual void onDraw(SkCanvas*, SkScalar opacity);
private:
#if DUMP_NAV_CACHE
friend class CachedLayer::Debug; // debugging access only
#endif
void bounds(SkRect* ) const;
bool prepareContext(bool force = false);
void clipInner(SkTDArray<SkRect>* region, const SkRect& local) const;
bool m_isRootLayer;
bool m_drawsContent;
bool m_haveClip;
bool m_doRotation;
bool m_isFixed;
bool m_backgroundColorSet;
SkLength m_fixedLeft;
SkLength m_fixedTop;
SkLength m_fixedRight;
SkLength m_fixedBottom;
int m_fixedWidth;
int m_fixedHeight;
SkPoint m_translation;
SkPoint m_scale;
SkScalar m_angleTransform;
SkColor m_backgroundColor;
SkPicture* m_recordingPicture;
typedef HashMap<String, RefPtr<AndroidAnimation> > KeyframesMap;
KeyframesMap m_animations;
DrawExtra* m_extra;
int m_uniqueId;
typedef SkLayer INHERITED;
};
}
#else
class SkPicture;
namespace WebCore {
class LayerAndroid {
public:
LayerAndroid(SkPicture* picture) :
m_recordingPicture(picture), // does not assign ownership
m_uniqueId(-1)
{}
SkPicture* picture() const { return m_recordingPicture; }
int uniqueId() const { return m_uniqueId; }
private:
SkPicture* m_recordingPicture;
int m_uniqueId;
};
}
#endif // USE(ACCELERATED_COMPOSITING)
#endif // LayerAndroid_h
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