SoQtPlaneViewer.h

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/*=======================================================================
** Author      : Alain Dumesny (MMM yyyy)
**=======================================================================*/
 
 
#ifndef _SO_QT_PLANE_VIEWER_
#define _SO_QT_PLANE_VIEWER_
#include <Inventor/Qt/OivQtCompat.h>
 
#include <Inventor/Qt/viewers/SoQtFullViewer.h>
#include <Inventor/SbLinear.h>
 
#include <Inventor/Gui/viewers/SoGuiPlaneViewer.h>
 
#include <QPointer>

//
//  Class: SoQtPlaneViewer
//
//      Plane Viewer - allows the user to move left, right, up, and down a 
//  given plane, as well as roll the viewer and zoom in and out.
//
//
//      Keys used by this viewer:
//      -------------------------
//
//  Left Mouse: Dolly in and out (gets closer to and further away from the
//  object).
//
//  Middle Mouse: 
//  Ctrl + Left Mouse: Translate up, down, left and right.
//
//  Ctrl + Middle Mouse: Used for roll action (rotates around the viewer
//  forward direction).
//
//  Shift + Ctrl + Left Mouse: Roll (same as Ctrl + Middle Mouse behavior
//  but added by VSG to support the standard
//  Microsoft 2-button mouse).
//
//  <s> + click: Alternative to the Seek button. Press (but do not hold down)
//  the <s> key, then click on a target object.
//  
//  Right Mouse: Open the popup menu.
//  

class  SoQtPlaneViewer : public SoQtFullViewer 
{
 
  Q_OBJECT
 
    public:
  SoQtPlaneViewer( QWidget* parent = NULL,
                   const char* name = NULL, 
                   SbBool buildInsideParent = TRUE, 
                   SoQtFullViewer::BuildFlag flag = SoQtFullViewer::BUILD_ALL, 
                   SoQtViewer::Type type = SoQtViewer::BROWSER );
  ~SoQtPlaneViewer();

  void setPlane( const SbVec3f& newNormal, const SbVec3f& newRight );
 
  //
  // redefine these to add Plane viewer functionality
  //
  virtual void  setViewing( SbBool onOrOff );
  virtual void  setCamera( SoCamera* cam );
  virtual void  setCursorEnabled( SbBool onOrOff );
  virtual void  setSeekMode( SbBool onOrOff );
 
  private:
    SoGuiPlaneViewer* getGuiPlaneViewer() const;
 
  // This constructor takes a boolean whether to build the widget now.
  // Subclasses can pass FALSE, then call SoQtPlaneViewer::buildWidget()
  // when they are ready for it to be built.
  private:
    SoQtPlaneViewer( QWidget* parent,
                     const char* name, 
                     SbBool buildInsideParent, 
                     SoQtFullViewer::BuildFlag flag, 
                     SoQtViewer::Type type, 
                     SbBool buildNow,
                     SbBool sync = true );
 
private:
 
  QWidget* buildWidget( QWidget* parent );
 
  // 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();
 
  // Define those thumb wheels to translate in the viewer plane
  virtual void bottomWheelMotion( float newVal );
  virtual void leftWheelMotion( float newVal );
  virtual void rightWheelMotion( float newVal );
  virtual void mouseWheelMotion( float newVal );
 
  // add viewer preference stuff
  virtual void createPrefSheet();
 
  // add some viewer buttons
  virtual void createViewerButtons( QWidget* parent );
 
  // Define this to bring the viewer help card
  virtual void openViewerHelpCard();
 
  // Redefine this to keep the same camera rotation when seeking
  virtual void computeSeekFinalOrientation();
 
  // It's a long story, but since we can't attach callbacks to a window
  // quite like we can to an Xt widget, it makes more sense for the
  // subclass viewer to handle the buttons it knows about then pass
  // the rest back up to SoQtFullViewer.
  //
  // So WINxx this function must be virtual and protected, not private.
  virtual void pushButtonCB( int id );
 
  virtual void updateCursor();
 
 private:
 
  SoGuiPlaneViewer* m_guiPlaneViewer; // Implementation class for SoXxPlaneViewer
 
  // push button vars and callbacks
  QPointer<SoQtButton> buttonList[10];
 
  // Added for WINxx port, makes it easier to merge WINxx and X code.
  // For _WIN32 saving this value saves us having to reload the normal
  // cursor all the time.  For X it's always NULL. --mmh 2/12/95
 
  void updateViewerMode( unsigned int state );
  void switchMode( int newMode );
 
  // this is called by both constructors
  void constructorCommon( SbBool buildNow );
 
  // Utility function called from processEvent
  void processPopupItem( int item );
 
  private Q_SLOTS:
 
  void slot_xButton();
  void slot_yButton();   
  void slot_zButton();   
  void slotCamPushButton();  
};
 
 
#endif  /* _SO_QT_PLANE_VIEWER_ */