Inventor/Qt/viewers/SoQtWalkViewer.h

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**=======================================================================*/
/*=======================================================================
** Author      : Alain Dumesny (MMM yyyy)
**=======================================================================*/


#ifndef  _SO_QT_WALK_VIEWER_
#define  _SO_QT_WALK_VIEWER_
#include <Inventor/Qt/OivQtCompat.h>
#include <Inventor/Qt/viewers/SoQtConstrainedViewer.h>
#include <Inventor/SbLinear.h>
#include <Inventor/SbTime.h>

#include <Inventor/Gui/viewers/SoGuiWalkViewer.h>

class   SoFieldSensor;

class  SoQtWalkViewer : public SoQtConstrainedViewer
{

  Q_OBJECT

    public:
    
  SoQtWalkViewer( QWidget* parent = NULL,
                  const char* name = NULL, 
                  SbBool buildInsideParent = TRUE, 
                  SoQtFullViewer::BuildFlag flag = SoQtFullViewer::BUILD_ALL, 
                  SoQtViewer::Type type = SoQtViewer::BROWSER );
  ~SoQtWalkViewer();
    
  //
  // redefine these to add Walk viewer functionality
  //
  virtual void setViewing( SbBool onOrOff );
  virtual void setCamera( SoCamera* cam );
  virtual void setCursorEnabled( SbBool onOrOff );
  virtual void setSeekMode( SbBool onOrOff );
    
  // This is redefined to prevent the camera type from being changed 
  virtual void setCameraType(SoType type);

  void setViewerSpeed( float speed ) { m_guiWalkViewer->setViewerSpeed( speed ); }
  float getViewerSpeed() const { return m_guiWalkViewer->getViewerSpeed(); }
    
  
  // This constructor takes a boolean whether to build the widget now.
  // Subclasses can pass FALSE, then call SoQtWalkViewer::buildWidget()
  // when they are ready for it to be built.
  private:
    SoQtWalkViewer( QWidget* parent,
                    const char* name, 
                    SbBool buildInsideParent, 
                    SoQtFullViewer::BuildFlag flag, 
                    SoQtViewer::Type type, 
                    SbBool buildNow,
                    SbBool sync );

  private:

  SoGuiWalkViewer* getGuiWalkViewer() const;
            
 private:
  // redefine these
  virtual SbString getDefaultWidgetName() const;
  virtual SbString getDefaultTitle() const;
  virtual SbString getDefaultIconTitle() const;
    
  // redefine those routines to do viewer specific stuff
  virtual void processEvent( QEvent* anyevent );
  virtual void actualRedraw();
  virtual void rightWheelMotion( float newVal );
  virtual void mouseWheelMotion( float newVal );
  virtual void dollyCamera( float dist );
    
  // redefine this to add the extra thumbwheel on the left side
  virtual QWidget* buildLeftTrim( QWidget* parent );
    
  // add viewer preference stuff
  virtual void createPrefSheet();
    
  // Define this to bring the viewer help card
  virtual void openViewerHelpCard();

  virtual void updateCursor();

private:

  SoGuiWalkViewer* m_guiWalkViewer;
  // viewer state variables
  QCursor tiltCursor;

  // extra decoration vars
  int heightWheelVal;
    
  void updateViewerMode( unsigned int state );
  void switchMode( int newMode );

  // this is called by both constructors
  void constructorCommon( SbBool buildNow );

protected Q_SLOTS:
#ifndef HIDDEN_FROM_DOC
  void extraWheelDrag( int value );
  void extraWheelOther(void);
#endif //HIDDEN_FROM_DOC
};

#endif  /* _SO_QT_WALK_VIEWER_ */

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