Inventor/Xt/SoXtRenderArea.h

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/*=======================================================================
 * Copyright 1991-1996, Silicon Graphics, Inc.
 * ALL RIGHTS RESERVED
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**=======================================================================*/
/*=======================================================================
** Author      : Author(s) (MMM yyyy)
** Modified by : David Mott (MMM yyyy)
** Modified by : Alain Dumesny (MMM yyyy)
**=======================================================================*/
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/

#ifdef SOQT
#  include <Inventor/Qt/SoQtRenderArea.h>
#elif defined _WIN32
#  include <Inventor/Win/SoWinRenderArea.h>
#else

#ifndef _SO_XT_RENDER_AREA_H_
#define _SO_XT_RENDER_AREA_H_

#include <climits>

#include <Inventor/SbColor.h>
#include <Inventor/sensors/SoNodeSensor.h>
#include <Inventor/SoSceneManager.h>
#include <Inventor/Xt/SoXtGLWidget.h>
#include <Inventor/actions/SoGLRenderAction.h>

#include <Inventor/nodes/SoCamera.h> // stereo settings
#include <Inventor/nodes/SoFullSceneAntialiasing.h>
#include <Inventor/SbElapsedTime.h>

#include <Inventor/Gui/SoGuiRenderArea.h>

class SoHandleEventAction;
class SoXtDevice;
class SoNode;
class SoXtMouse;
class SoXtKeyboard;
class SoSelection;
class SbConfig;
class SoXtRenderArea;
class ScTracking;
class SoGuiAlgoViewers;
class SoAntialiasingParameters;

// callback function prototypes
typedef SbBool SoXtRenderAreaEventCB( void* userData, XAnyEvent* anyevent );
typedef SbBool SoXtRenderAreaRenderCB( void* userData, SoXtRenderArea* rendArea );

//
//  Class: SoXtRenderArea
//
//  Class to do Inventor rendering in a GLX Motif widget.
//

class  SoXtRenderArea : public SoXtGLWidget
{
 public:

  SoXtRenderArea( SoWidget parent = NULL,
                  const char* name = NULL,
                  SbBool buildInsideParent = TRUE,
                  SbBool getMouseInput = TRUE,
                  SbBool getKeyboardInput = TRUE );
  ~SoXtRenderArea();

  virtual void setSceneGraph( SoNode* newScene );

  virtual SoNode* getSceneGraph();

  void registerDevice( SoXtDevice* d );

  void unregisterDevice( SoXtDevice* d );

  void setBackgroundColor( const SbColor& c );

  SbColor getBackgroundColor() const { return m_guiRenderArea->getBackgroundColor(); }

  void setBackgroundIndex( int index ) { m_guiRenderArea->setBackgroundIndex( index ); }

  int getBackgroundIndex() const { return m_guiRenderArea->getBackgroundIndex(); }

  void setColorMap( int startIndex, int num, const SbColor* colors );

  void setViewportRegion( const SbViewportRegion& newRegion )
  { m_guiRenderArea->setViewportRegion( newRegion ); }

  const SbViewportRegion& getViewportRegion() const
  { return m_guiRenderArea->getViewportRegion(); }

  void setTransparencyType( SoGLRenderAction::TransparencyType type );

  SoGLRenderAction::TransparencyType  getTransparencyType() const
  { return m_guiRenderArea->getTransparencyType(); }

  void setFastEditSavePolicy( SoGLRenderAction::FastEditSavePolicy policy,
                              SbBool fastEditDelayedObjects = FALSE);

  SoGLRenderAction::FastEditSavePolicy  getFastEditSavePolicy() const
  { return m_guiRenderArea->getFastEditSavePolicy(); }

  void setInvalidateCacheMode( SoGLRenderAction::InvalidateCacheMode icm );

  SoGLRenderAction::InvalidateCacheMode getInvalidateCacheMode();

  void setClearBeforeRender( SbBool trueOrFalse, SbBool zbTrueOrFalse = TRUE )
  { m_guiRenderArea->setClearBeforeRender( trueOrFalse, zbTrueOrFalse ); }

  SbBool isClearBeforeRender() const { return m_guiRenderArea->isClearBeforeRender(); }

  SbBool isClearZBufferBeforeRender() const { return m_guiRenderArea->isClearZBufferBeforeRender(); }

  void setAutoRedraw( SbBool trueOrFalse );

  SbBool isAutoRedraw() const { return m_guiRenderArea->isAutoRedraw(); }

  void setRedrawPriority( uint32_t priority ) { m_guiRenderArea->setRedrawPriority(priority); }

  uint32_t getRedrawPriority() const { return m_guiRenderArea->getRedrawPriority(); }

  static uint32_t getDefaultRedrawPriority() { return SoSceneManager::getDefaultRedrawPriority(); }

  void render() { redraw(); }

  void scheduleRedraw();

  void redrawOnSelectionChange( SoSelection* s );

  void setEventCallback( SoXtRenderAreaEventCB* fcn, void* userData = NULL );

  void setSceneManager( SoSceneManager* sm );

  SoSceneManager* getSceneManager() const { return m_guiRenderArea->getSceneManager(); }

  void setGLRenderAction( SoGLRenderAction* ra );

  SoGLRenderAction* getGLRenderAction() const { return m_guiRenderArea->getGLRenderAction(); }

  const SbGLShareContext getShareContext();

  void setPostRenderCallback( SoXtRenderAreaRenderCB* fcn, void* userData = NULL )
  { appPostRenderCB = fcn; appPostRenderData = userData; }

  SoXtRenderAreaRenderCB* getPostRenderCallback( const void* &userData ) const
  { userData = appPostRenderData; return appPostRenderCB; }

  void setFloatingColorBuffer( SbBool enable, FloatColorBufferSize size = FLOAT_16_COLOR_BUFFER );

  void getFloatingColorBuffer( SbBool& enable, FloatColorBufferSize& size );

  void sendEvent( XAnyEvent* anEvent );

  virtual void setMPEGRecorder( SoMPEGRenderer* recorder )
  { m_guiRenderArea->setMPEGRecorder( recorder ); }

  virtual SoMPEGRenderer* getMPEGRecorder() const
  { return m_guiRenderArea->getMPEGRecorder(); }

#if 1             SoDEPRECATED
  void setAntialiasing( SbBool smoothing, int numPasses );
  using SoXtGLWidget::setAntialiasing;
SoDEPRECATED
  void getAntialiasing( SbBool& smoothing, int& numPasses ) const;

#endif 
private:

  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SoGuiAlgoViewers* guiAlgos );

  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SbBool buildNow,
                  SbBool sync,
                  SoGuiAlgoViewers* guiAlgos );

  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SbBool buildNow,
                  SoGuiAlgoViewers* guiAlgos );
  SoGuiAlgoViewers* getGuiAlgoViewers() const { return (SoGuiAlgoViewers*)m_guiRenderArea; }

 private:
  void setStereoMode( SoCamera::StereoMode stMode );
  void setStereoElement();

  SoGuiRenderArea* getGuiRenderArea() const;

  SbBool isFloatingColorBufferSupported();

  virtual SbBool isInteractive() const;

  SoXtRenderArea();

  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SbBool buildNow,
                  SbBool sync );

  // Retro compatibility only.
  // These members shouldn't be used directly, instead call their accessors
  float stereoBalance, stereoOffset;
  SbBool stereoAbsoluteAdjustments;
  SoCamera::StereoMode stereoMode;
  SbBool stereoReversed;

 private:

  //
  // This constructor takes a boolean whether to build the widget now.
  // Subclasses can pass FALSE, then call SoXtRenderArea::buildWidget()
  // when they are ready for it to be built.

  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SbBool buildNow );

  //Constructors provided to avoid multiple instance of implementation objects
  //Equivalent to the public constructor
  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SoGuiRenderArea* guiRenderArea );

  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SbBool buildNow,
                  SbBool sync,
                  SoGuiRenderArea* guiRenderArea );

  SoXtRenderArea( SoWidget parent,
                  const char* name,
                  SbBool buildInsideParent,
                  SbBool getMouseInput,
                  SbBool getKeyboardInput,
                  SbBool buildNow,
                  SoGuiRenderArea* guiRenderArea );

  //
  // redraw() calls actualRedraw(), followed by swapbuffers if necessary.
  // actualRedraw will have the scene manager render the scene. Rendering
  // is broken up into two routines like this so that subclasses can
  // redefine or simply add to rendering (in actualRedraw) without having
  // to worry about being visible, seting up the window or
  // single/double buffer swapping.
  //
  virtual void redraw();
  virtual void actualRedraw();

  //
  // Redefine these to do Inventor-specific things
  //
  virtual void processEvent( XAnyEvent* anyevent );
  virtual void initGraphic();
  virtual void sizeChanged( const SbVec2s& );
  virtual void posChanged( const SbVec2i32&, const SbVec2i32& );
  virtual void widgetChanged( SoWidget w );

  SoWidget buildWidget( SoWidget parent );

  // redefine these
  virtual SbString getDefaultWidgetName() const;
  virtual SbString getDefaultTitle() const;
  virtual SbString getDefaultIconTitle() const;

  // subclasses have access to the device list for event processing
  SbPList* m_deviceList;    // list of devices

  // application event callbacks variables
  SoXtRenderAreaEventCB* defaultAppEventHandler;
  void* defaultAppEventHandlerData;
  SoXtRenderAreaEventCB* appEventHandler;
  void* appEventHandlerData;

  // invoke the application event callback - returns what the app cb returns
  SbBool invokeAppCB( XAnyEvent* anyevent );
  SbBool processInventorEvent( XAnyEvent* anyevent );
  const SoEvent* translateAnyEvent( XAnyEvent* anyevent );

  // application pre/post render callback variables
  SoXtRenderAreaRenderCB* appPostRenderCB;
  void* appPostRenderData;

private:
  // these make rendering/redrawing happen
  XColor* m_mapColors; // saved colors
  int m_mapColorNum; // number of saved colors

  SoXtMouse* m_mouseDevice;
  SoXtKeyboard* m_keybdDevice;
  void reinstallDevices( SoWidget newWidget );

  static void selectionChangeCB( void* p, SoSelection* s );
  SoWidget m_deviceWidget;

  // static callbacks
  SbBool m_firstEvent; // used to init the action SoWindowElement
  static void windowEventCB( SoWidget w, SoXtRenderArea* p, XAnyEvent* xe, Boolean* b );
  static void renderCB( void*  v, SoSceneManager* sm );

  static void visibilityChangeCB( void* pt, SbBool visible );
  void activate();             // connects the sensor
  void deactivate();           // disconnects the sensor

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

  // this is called by constructorCommon
  void constructorCommon2( SbBool getMouseInput,
                          SbBool getKeyboardInput,
                          SbBool buildNow );

  SbVec2i32 getWindowPosition() { return SbVec2i32( INT_MAX, INT_MAX ); }

  SbConfig* m_vrConfig;
  SbBool m_forceRedraw;
  SbBool m_forceSyncRedraw;

  ScTracking* m_tracking;

  SoGuiRenderArea* m_guiRenderArea; // Implementation class for SoXxRendeArea

  // this is the default implementation of the hasRenderAbortCallback passed to the scenemanager
  // at construction. Implementation is common to all created renderArea.
  // If an event is received to one renderArea, all renderArea of the process will consider it as
  // a candidate for abortion (only implemented on Windows)
  static SbBool s_abortRenderCallback(SoAction*,void*);

  SoAntialiasingParameters* m_accumulationParameters;

  bool m_firstStdRedraw;
  bool m_firstConnectedRedraw;
  SoTimerSensor* m_viewerUpdaterSensor;
  static void viewerUpdaterCB( void*, SoSensor* );
  void updateFirstFrame();
};


#endif /* _SO_XT_RENDER_AREA_H_ */

#endif

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Open Inventor Toolkit reference manual, generated on 15 Mar 2023
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