Inventor/Xt/viewers/SoXtExaminerViewer.h

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/*=======================================================================
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/*=======================================================================
** Author      : Alain Dumesny (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/


#ifdef SOQT
#  include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
#elif defined _WIN32
#  include <Inventor/Win/viewers/SoWinExaminerViewer.h>
#else // _WIN32

#ifndef  _SO_XT_EXAMINER_VIEWER_
#define  _SO_XT_EXAMINER_VIEWER_

#include <Inventor/Xt/viewers/SoXtFullViewer.h>
#include <Inventor/events/SoMouseButtonEvent.h>
#include <Inventor/Gui/viewers/SoGuiExaminerViewer.h>

// classes used
class SbSphereSheetProjector;
class SoFieldSensor;
class SoSeparator;
class SoSwitch;
class SoTranslation;
class SoScale;
class SoXtBitmapButton;

//
//  Class: SoXtExaminerViewer
//
//      Examiner viewer - allows the user to change the camera position
//  by spinning a sphere in front of the viewpoint.
//
//
//      Keys used by this viewer:
//      -------------------------
//
//      Left Mouse: Tumbles the virtual trackball.
//
//      Middle Mouse:
//      Ctrl + Left Mouse: Translate up, down, left and right.
//
//      Ctrl + Middle Mouse:
//      Left + Middle Mouse: Dolly in and out (gets closer to and further
//                          away from the object).
//
//      <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  SoXtExaminerViewer : public SoXtFullViewer
{
 public:

  enum ViewingMode 
  {
    VIEWING_MODE_SPIN,

    VIEWING_MODE_SPIN_CONSTRAINED,

    VIEWING_MODE_PAN,

    VIEWING_MODE_ZOOM
  };

  enum ConstrainedViewingMode 
  {
    NONE,
    CONSTRAINED_VIEWING_MODE_X,

    CONSTRAINED_VIEWING_MODE_Y,

    CONSTRAINED_VIEWING_MODE_Z
  };

  SoXtExaminerViewer( SoWidget parent = NULL,
                      const char* name = NULL,
                      SbBool buildInsideParent = TRUE,
                      SoXtFullViewer::BuildFlag flag = SoXtFullViewer::BUILD_ALL,
                      SoXtViewer::Type type = SoXtViewer::BROWSER );
  ~SoXtExaminerViewer();

  void setViewingMode( ViewingMode viewingMode ) ;

  ViewingMode getViewingMode() const
  { return (ViewingMode)m_guiExamViewer->getViewingMode(); }

  void setConstrainedViewingMode( ConstrainedViewingMode mode );

  ConstrainedViewingMode getConstrainedViewingMode() const
  { return m_constrainedMode; }

  void setFeedbackVisibility( SbBool onOrOff );

  SbBool isFeedbackVisible() const { return m_guiExamViewer->isFeedbackVisible(); }

  void setFeedbackSize( int newSize );

  int getFeedbackSize() const { return m_guiExamViewer->getFeedbackSize(); }

  void setAnimationEnabled( SbBool onOrOff );

  SbBool isAnimationEnabled() { return m_guiExamViewer->isAnimationEnabled(); }

  void stopAnimating();

  SbBool isAnimating() { return m_guiExamViewer->isAnimating(); }

  //
  // redefine these to add Examiner viewer functionality
  //
  virtual void viewAll();
  virtual void resetToHomePosition();
  virtual void setCamera( SoCamera* cam );
  virtual void setViewing( SbBool onOrOff );
  virtual void setCursorEnabled( SbBool onOrOff );
  virtual void setSeekMode( SbBool onOrOff );

  virtual void activateSpinning( const SbVec2s& newLocator );

  virtual void activatePanning( const SbVec2s& newLocator );

  virtual void activateDolly( const SbVec2s& newLocator );

  virtual void activateRoll( const SbVec2s& newLocator );

  virtual void rollCamera( const SbVec2s& newLocator );


  virtual void spinCamera( const SbVec2f& newLocator );

  virtual void spinConstrainedCamera( const SbVec2f& newLocator, int axisIndex );

  virtual void dollyCamera( const SbVec2s& newLocator );

  virtual void reverseDollyCamera( const SbVec2s& newLocator );

  virtual void panCamera( const SbVec2f& newLocator );

  private:

  virtual void rotateCamera( const SbRotation& rot );

  void constrainCameraRotation( bool x = false, bool y = false, bool z = false );

  private:

  SoGuiExaminerViewer* getGuiExaminerViewer() const;


  // This constructor takes a boolean whether to build the widget now.
  // Subclasses can pass FALSE, then call SoXtExaminerViewer::buildWidget()
  // when they are ready for it to be built.
   private:
    SoXtExaminerViewer( SoWidget parent,
                        const char* name,
                        SbBool buildInsideParent,
                        SoXtFullViewer::BuildFlag flag,
                        SoXtViewer::Type type,
                        SbBool buildNow,
                        SbBool sync = TRUE );

 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( XAnyEvent* anyevent );
  virtual void actualRedraw();

  // Get X resources for the widget.
  SoWidget buildWidget( SoWidget parent );

  // Define those thumb wheels to rotate the object
  virtual void bottomWheelMotion( float newVal );
  virtual void leftWheelMotion( float newVal );
  virtual void rightWheelMotion( float newVal );

  // redefine those routines to also stop animation if any
  virtual void bottomWheelStart();
  virtual void leftWheelStart();

  // add viewer preference stuff
  virtual void createPrefSheet();

  // add some viewer buttons
  virtual void createViewerButtons( SoWidget parent );

  // Define this to bring the viewer help card
  virtual void openViewerHelpCard();

  virtual void updateCursor();

 private:
  // viewer state variables
  Cursor spinCursor, panCursor, dollyCursor, seekCursor;
  SbBool firstBuild; // set FALSE after buildWidget called once

  // point of rotation feedback vars
  void createFeedbackNodes();

  // variables used for doing spinning animation
  unsigned long lastMotionTime;
  static void visibilityChangeCB( void* pt, SbBool visible );

  void setViewerMode();
  void updateViewerMode( unsigned int state );
  void switchMode( int newMode );
  void defineCursors();

  // preference sheet stuff
  SoWidget createExamPrefSheetGuts( SoWidget parent );
  static void animPrefSheetToggleCB( SoWidget w, SoXtExaminerViewer* v, void* data );

  // point of rotation pref sheet stuff
  int feedbackSizeWheelVal;
  SoWidget feedbackLabel[2], feedbackField, feedbackSizeWheel;
  static void feedbackSizeWheelCB( SoWidget w, SoXtExaminerViewer* v, XtPointer* d );
  static void feedbackSizeFieldCB( SoWidget w, SoXtExaminerViewer* v, void* data );
  static void feedbackPrefSheetToggleCB( SoWidget w, SoXtExaminerViewer* v, void* data );
  void toggleFeedbackWheelSize( SoWidget toggle );

  // push button vars and callbacks
  SoXtBitmapButton* buttonList[10];
  static void camPushCB( SoWidget w, SoXtExaminerViewer* v, void* data);

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

  SoGuiExaminerViewer* m_guiExamViewer; // Implementation class for SoXxExaminerViewer

  // Viewer state variables
  SoGuiExaminerViewer::ViewingSpinType m_viewingSpinType;
  ConstrainedViewingMode m_constrainedMode; // Constrained viewing type
};

#endif  /* _SO_XT_EXAMINER_VIEWER_ */

#endif // _WIN32

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Open Inventor Toolkit reference manual, generated on 15 Mar 2023
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