GLViewer_Widget.h

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// Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// 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 2.1 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
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//

//  Author : OPEN CASCADE
// File:      GLViewer_Widget.h
// Created:   November, 2004
//
#ifndef GLVIEWER_WIDGET_H
#define GLVIEWER_WIDGET_H

#include "GLViewer.h"

#include <QtOpenGL>

class QFile;

class GLViewer_ViewPort2d;
class GLViewer_CoordSystem;

class GLVIEWER_API GLViewer_Widget : public QGLWidget
{
  Q_OBJECT

public:

  GLViewer_Widget( QWidget* theParent, const char* theName = 0 );
 
  ~GLViewer_Widget();


  GLViewer_ViewPort2d*   getViewPort() const { return myViewPort; }
  GLint                  getWidth() const { return myWidth; }
  GLint                  getHeight() const { return myHeight; }
  

  void                   getScale( GLfloat& xScale,
                                   GLfloat& yScale,
                                   GLfloat& zScale );
  void                   setScale( GLfloat xScale,
                                   GLfloat yScale,
                                   GLfloat zScaleGLfloat );
  
  void                   getPan( GLfloat& xPan, GLfloat& yPan, GLfloat& zPan );
  void                   setPan( GLfloat xPan, GLfloat yPan, GLfloat zPan );
  

  GLfloat                getRotationAngle() const { return myRotationAnglePrev; }

  void                   setRotationAngle( GLfloat a ) { myRotationAnglePrev = a; }

  void                   getRotationStart( GLfloat& rotationStartX,
                                           GLfloat& rotationStartY,
                                           GLfloat& rotationStartZ );
  void                   setRotationStart( GLfloat rotationStartX,
                                           GLfloat rotationStartY,
                                           GLfloat rotationStartZ );
  void                   getRotation( GLfloat& rotationAngle,
                                      GLfloat& rotationCenterX,
                                      GLfloat& rotationCenterY,
                                      GLfloat& rotationCenterZ );
  void                   setRotation( GLfloat, GLfloat, GLfloat, GLfloat );

  void                   setBackground( QString theFileName );
  
  void                   addToolTip( QString theTTText, QRect theTTRect );
  void                   removeToolTip();
  

  virtual void           translateBackgroundToPS( QFile& hFile, GLViewer_CoordSystem* aViewerCS, GLViewer_CoordSystem* aPSCS );
  
  /* Repaints all objects in only current view */
  void                   exportRepaint();

#ifdef WIN32



  virtual void           translateBackgroundToEMF( HDC dc, GLViewer_CoordSystem* aViewerCS, GLViewer_CoordSystem* aEMFCS );
#endif

private:
  void                   getBackgroundRectInViewerCS( double& left, double& top, double& right, double& bottom );
  
protected:
  /* Redefined QT methods */
  virtual void           initializeGL();
  /* Calling by public method repaint() */
  virtual void           paintGL();
  virtual void           resizeGL( int, int );
  
  
  virtual void           paintEvent( QPaintEvent* );
  virtual void           mouseMoveEvent( QMouseEvent* );
  virtual void           mousePressEvent( QMouseEvent* );
  virtual void           mouseReleaseEvent( QMouseEvent* );

  /* Needs to redefine because Window must be updated highlight presentation when mouse enter window */
  virtual void           enterEvent( QEvent* );
  /* Needs to redefine because Window must be updated highlight presentation when mouse leave window */
  virtual void           leaveEvent( QEvent* );

  virtual bool           event ( QEvent* );
  
private:
  GLint                  myWidth;
  GLint                  myHeight;
  
  GLfloat                myXScale;
  GLfloat                myYScale;
  /* equals 1 in 2D */
  GLfloat                myZScale;

  GLfloat                myXPan;
  GLfloat                myYPan;
  /* equals 0 in 2D */
  GLfloat                myZPan;

  GLfloat                myRotationStartX;
  GLfloat                myRotationStartY;
  GLfloat                myRotationStartZ;
  GLfloat                myRotationAngle;
  GLfloat                myRotationCenterX;
  GLfloat                myRotationCenterY;
  GLfloat                myRotationCenterZ;
  GLfloat                myRotationAnglePrev;
  
  GLboolean              myStart;
  GLViewer_ViewPort2d*   myViewPort;
  
  bool                   isLoadBackground;
  QString                myBackgroundFile;
  GLuint                 texName;
  int                    myIW;
  int                    myIH;
  int                    myBackgroundSize;

  QRect                  myToolTipRect;

  bool                   isExportMode;
};

#endif // GLVIEWER_WIDGET_H