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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#ifndef _Canvas_H_
#define _Canvas_H_
#include "../api.h"
#include "FontStyle.h"
#include "../base/IPlaybackEndListener.h"
#include "../base/IFrameEndListener.h"
#include "../base/IPreRenderListener.h"
#include "../base/Signal.h"
#include "../base/GLMHelper.h"
#include "../graphics/OGLHelper.h"
#include "../graphics/Bitmap.h"
#include <map>
#include <string>
#include <vector>
#include <boost/enable_shared_from_this.hpp>
namespace avg {
class Player;
class Node;
class CanvasNode;
class AudioEngine;
class TestHelper;
class ProfilingZoneID;
class Canvas;
class FBO;
class VertexArray;
class SubVertexArray;
typedef boost::shared_ptr<Node> NodePtr;
typedef boost::shared_ptr<CanvasNode> CanvasNodePtr;
typedef boost::shared_ptr<FBO> FBOPtr;
typedef boost::shared_ptr<VertexArray> VertexArrayPtr;
class Canvas;
typedef boost::shared_ptr<Canvas> CanvasPtr;
typedef boost::weak_ptr<Canvas> CanvasWeakPtr;
class AVG_API Canvas: public ExportedObject
{
public:
Canvas(Player * pPlayer);
virtual ~Canvas();
virtual void setRoot(NodePtr pRootNode);
void initPlayback(int multiSampleSamples);
virtual void stopPlayback(bool bIsAbort);
CanvasNodePtr getRootNode() const;
NodePtr getElementByID(const std::string& id);
void registerNode(NodePtr pNode);
void addNodeID(NodePtr pNode);
void removeNodeID(const std::string& id);
virtual void doFrame(bool bPythonAvailable);
IntPoint getSize() const;
virtual BitmapPtr screenshot() const = 0;
virtual void pushClipRect(const glm::mat4& transform, SubVertexArray& va);
virtual void popClipRect(const glm::mat4& transform, SubVertexArray& va);
void registerPlaybackEndListener(IPlaybackEndListener* pListener);
void unregisterPlaybackEndListener(IPlaybackEndListener* pListener);
void registerFrameEndListener(IFrameEndListener* pListener);
void unregisterFrameEndListener(IFrameEndListener* pListener);
void registerPreRenderListener(IPreRenderListener* pListener);
void unregisterPreRenderListener(IPreRenderListener* pListener);
std::vector<NodePtr> getElementsByPos(const glm::vec2& Pos) const;
virtual void render(IntPoint windowSize, bool bOffscreen);
protected:
Player * getPlayer() const;
void preRender();
void emitPreRenderSignal();
void emitFrameEndSignal();
private:
virtual void renderTree()=0;
void renderOutlines(const glm::mat4& transform);
void clip(const glm::mat4& transform, SubVertexArray& va, GLenum stencilOp);
Player * m_pPlayer;
CanvasNodePtr m_pRootNode;
bool m_bIsPlaying;
VertexArrayPtr m_pVertexArray;
typedef std::map<std::string, NodePtr> NodeIDMap;
NodeIDMap m_IDMap;
Signal<IPlaybackEndListener> m_PlaybackEndSignal;
Signal<IFrameEndListener> m_FrameEndSignal;
Signal<IPreRenderListener> m_PreRenderSignal;
int m_MultiSampleSamples;
int m_ClipLevel;
};
}
#endif
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