// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_Qt_glarea
#define tools_Qt_glarea

#include "../sg/GL_viewer"

#include <QtOpenGL/qgl.h>
#include <QtGui/qevent.h>

#include <tools/sg/device_interactor>

namespace tools {
namespace Qt {

class glarea : public QGLWidget {
  typedef QGLWidget parent;
public:
  virtual void initialieGL() {}
  virtual void resizeGL(int a_w,int a_h){
    //::printf("debug : resize : %d %d\n",a_w,a_h);
#if QT_VERSION < 0x050000
#else
    m_width = a_w;
    m_height = a_h;
#endif
  }
  //virtual void paintGL();
  virtual void paintGL() {
#if QT_VERSION < 0x050000
    //::printf("debug : tools::Qt::glarea::paintGL %d %d\n",width(),height());
    m_viewer.set_size(width(),height());
#else
    //::printf("debug : tools::Qt::glarea::paintGL %d %d\n",m_width,m_height);
    m_viewer.set_size(m_width,m_height);
#endif
    m_viewer.render();
  }

  virtual void keyPressEvent(QKeyEvent* a_event) {
    if(!m_interactor) return;
    tools::sg::key_down_event event(convert(a_event->key()));
    m_interactor->key_press(event);
  }
  virtual void keyReleaseEvent(QKeyEvent* a_event) {
    if(!m_interactor) return;
    tools::sg::key_up_event event(convert(a_event->key()));
    m_interactor->key_release(event);
  }
  virtual void mousePressEvent(QMouseEvent* a_event) {
    if(!m_interactor) return;
    tools::sg::mouse_down_event event(a_event->x(),a_event->y());
    m_interactor->mouse_press(event);
  }
  virtual void mouseReleaseEvent(QMouseEvent* a_event) {
    if(!m_interactor) return;
    tools::sg::mouse_up_event event(a_event->x(),a_event->y());
    m_interactor->mouse_release(event);
  }
  virtual void mouseMoveEvent(QMouseEvent* a_event) {
    if(!m_interactor) return;
    tools::sg::mouse_move_event event(a_event->x(),a_event->y(),0,0,false);
    m_interactor->mouse_move(event);
  }
//virtual void mouseDoubleClickEvent(QMouseEvent* a_event) {
//  if(!m_interactor) return;
//  tools::sg::mouse_double_click_event event(a_event->x(),a_event->y());
//  m_interactor->mouse_double_click(event);
//}
  virtual void wheelEvent(QWheelEvent* a_event) {
    if(!m_interactor) return;
    tools::sg::wheel_rotate_event event(a_event->angleDelta().y());
    m_interactor->wheel_rotate(event);
  }

public:
  glarea(QWidget* a_parent,tools::sg::GL_viewer& a_viewer):parent(a_parent),m_viewer(a_viewer),m_interactor(0){}
  virtual ~glarea(){}
public:
  void set_device_interactor(tools::sg::device_interactor* a_interactor) {m_interactor = a_interactor;} //we do not have ownership.
protected:
  tools::key_code convert(/*Qt::Key*/int a_key) {return a_key;}
protected:
  tools::sg::GL_viewer& m_viewer;
#if QT_VERSION < 0x050000
#else
protected:
  int m_width;
  int m_height;
#endif
  tools::sg::device_interactor* m_interactor;
};

}}

#endif