SoQtExaminerViewer (QWidget *parent=NULL, const char *name=NULL, SbBool embed=TRUE, SoQtFullViewer::BuildFlag flag=BUILD_ALL, SoQtViewer::Type type=BROWSER)

void setAnimationEnabled (const SbBool enable)

SbBool isAnimationEnabled (void) const

void stopAnimating (void)

SbBool isAnimating (void) const

void setFeedbackVisibility (const SbBool enable)

SbBool isFeedbackVisible (void) const

void setFeedbackSize (const int size)

int getFeedbackSize (void) const

virtual void setViewing (SbBool enable)

virtual void setCamera (SoCamera *camera)

virtual void setCursorEnabled (SbBool enable)

SoQtExaminerViewer (QWidget *parent, const char *name, SbBool embed, SoQtFullViewer::BuildFlag flag, SoQtViewer::Type type, SbBool build)

virtual void leftWheelMotion (float val)

virtual void bottomWheelMotion (float val)

virtual void rightWheelMotion (float val)

virtual void createViewerButtons (QWidget *parent, SbPList *buttonlist)

virtual const char * getDefaultWidgetName (void) const

virtual const char * getDefaultTitle (void) const

virtual const char * getDefaultIconTitle (void) const

virtual SbBool processSoEvent (const SoEvent *const event)

virtual void setSeekMode (SbBool enable)

virtual void actualRedraw (void)

virtual void afterRealizeHook (void)

class SoGuiExaminerViewerP

class SoQtExaminerViewerP

Constructor. See parent class for explanation of arguments. Calling this constructor will make sure the examiner viewer widget will be built immediately.

Constructor. See parent class for explanation of arguments.

Decide if it should be possible to start a spin animation of the model in the viewer by releasing the mouse button while dragging.

If the enable flag is FALSE and we're currently animating, the spin will be stopped.

See also: isAnimationEnabled

Query whether or not it is possible to start a spinning animation by releasing the left mouse button while dragging the mouse.

See also: setAnimationEnabled

Stop the model from spinning.

Query if the model in the viewer is currently in spinning mode after a user drag.

Set the flag deciding whether or not to show the axis cross.

See also: isFeedbackVisible, getFeedbackSize, setFeedbackSize

Check if the feedback axis cross is visible.

See also: setFeedbackVisibility, getFeedbackSize, setFeedbackSize

Set the size of the feedback axiscross. The value is interpreted as an approximate percentage chunk of the dimensions of the total canvas.

See also: getFeedbackSize, isFeedbackVisible, setFeedbackVisibility

Return the size of the feedback axis cross. Default is 25.

See also: setFeedbackSize, isFeedbackVisible, setFeedbackVisibility

Set view mode.

If the view mode is on, user events will be caught and used to influence the camera position / orientation. If view mode is off, all events in the viewer canvas (like for instance keypresses or mouseclicks and -movements) will be passed along to the scene graph.

Default is to have the view mode active.

See also: isViewing()

Reimplemented from SoQtFullViewer.

Set the camera we want the viewer to manipulate when interacting with the viewer controls.

The camera passed in as an argument to this method must already be part of the viewer's scenegraph. You do not inject viewpoint cameras to the viewer with this method.

You should rather insert a camera into the scene graph first (if necessary, often one will be present already), then register it as the camera used by the viewer controls with this method.

If the application code doesn't explicitly set up a camera through this method, the viewer will automatically scan through the scenegraph to find a camera to use. If no camera is available in the scenegraph at all, it will set up it's own camera.

See also: getCamera()

Reimplemented from SoQtViewer.

Decide whether or not the mouse pointer cursor should be visible in the rendering canvas.

Reimplemented from SoQtViewer.

Called repeatedly as the user drags the thumbwheel in the left frame. Override this method in subclassed viewers to provide your own functionality on the thumbwheel.

See also: leftWheelStart(), leftWheelFinish()

bottomWheelStart(), rightWheelStart()

Reimplemented from SoQtFullViewer.

Called repeatedly as the user drags the thumbwheel in the bottom frame. Override this method in subclassed viewers to provide your own functionality on the thumbwheel.

See also: bottomWheelStart(), bottomWheelFinish()

leftWheelStart(), rightWheelStart()

Reimplemented from SoQtFullViewer.

Called repeatedly as the user drags the thumbwheel in the right frame. Override this method in subclassed viewers to provide your own functionality on the thumbwheel.

See also: rightWheelStart(), rightWheelFinish()

leftWheelStart(), bottomWheelStart()

Reimplemented from SoQtFullViewer.

Set up the viewer buttons with pixmaps and event connections.

One important note if you want to override this method to add your own buttons to the list (in the explanation below, it is assumed that you know how virtual function table pointers are handled by C++):

createViewerButtons() is called (indirectly) from the constructors of the viewer classes. This means that you need to delay it's invocation until your own subclass's constructor is run, because otherwise your re-implementation won't have been added to the internal virtual function table yet.

Delaying a superclass viewer from building it's decorations is done by passing build==FALSE as the last argument of the protected constructors. You will then have to explicitly trigger the building in your own constructor.

Here's a minimal example that shows the steps needed to be able to override createViewerButtons() from SoQtExaminerViewer:

  class MyExaminerViewer : public SoQtExaminerViewer {
  
  public:
    MyExaminerViewer(QWidget * parent);
  
  protected:
    virtual void createViewerButtons(QWidget * parent, SbPList * buttonlist);
  };
  
  MyExaminerViewer::MyExaminerViewer(QWidget * parent)
    : SoQtExaminerViewer(parent, NULL, TRUE,
                            SoQtFullViewer::BUILD_ALL, SoQtFullViewer::BROWSER,
                            // build == FALSE, to delay creation of decorations
                            FALSE)
  {
    // Explicitly trigger the construction of viewer decorations.
    QWidget * widget = this->buildWidget(this->getParentWidget());
    this->setBaseWidget(widget);
  }
  
  void
  MyExaminerViewer::createViewerButtons(QWidget * parent, SbPList * buttonlist)
  {
    SoQtExaminerViewer::createViewerButtons(parent, buttonlist);
    // [now add your own button(s) to the buttonlist]
  }

Reimplemented from SoQtFullViewer.

This method returns the default name of a component widget class.

It should be overridden by derived non-abstract classes for the topmost widget in the component to have a proper name.

Reimplemented from SoQtRenderArea.

This method returns the default window caption string of the component.

It should be overridden by derived non-abstract classes so the window and popup menu will get a proper title.

Reimplemented from SoQtRenderArea.

This method returns the default icon title of the component.

It should be overridden by derived non-abstract classes so icons will get proper titles.

Reimplemented from SoQtRenderArea.

Toolkit-native events are attempted converted to Coin-generic events in the SoQtRenderArea::processEvent() method. If this succeeds, they are forwarded to this method.

This is a virtual method, and is overridden in it's subclasses to catch events of particular interest to the viewer classes, for instance.

Return TRUE iff the event was processed. If not it should be passed on further up in the inheritance hierarchy by the caller. This last point is extremely important to take note of if you are expanding the toolkit with your own viewer class.

This method is not part of the original SGI InventorXt API. Note that you can still override the toolkit-native processEvent() method instead of this 'generic' method.

Reimplemented from SoQtFullViewer.

Put the viewer in or out of 'waiting-to-seek' mode.

If the user performs a mouse button click when the viewer is in 'waiting-to-seek' mode, the camera will be repositioned so the camera focal point lies on the point of the geometry under the mouse cursor.

See also: isSeekMode(), setDetailSeek()

Reimplemented from SoQtViewer.

This method instantly redraws the normal (non-overlay) scenegraph by calling SoSceneManager::render().

Subclasses may override this method to add their own rendering before or after Coin renders it's scenegraph.

The following is a complete example that demonstrates one way of adding both a background image and foreground (overlay) geometry to the 'normal' rendering:

  // This example shows how to put a permanent background image on your
  // viewer canvas, below the 3D graphics, plus overlay foreground
  // geometry.  Written by mortene.  Copyright Systems in Motion 2002.
  
  // *************************************************************************
  
  #include <Inventor/Qt/SoQt.h>
  #include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
  #include <Inventor/nodes/SoBaseColor.h>
  #include <Inventor/nodes/SoCone.h>
  #include <Inventor/nodes/SoCube.h>
  #include <Inventor/nodes/SoImage.h>
  #include <Inventor/nodes/SoLightModel.h>
  #include <Inventor/nodes/SoOrthographicCamera.h>
  #include <Inventor/nodes/SoRotationXYZ.h>
  #include <Inventor/nodes/SoSeparator.h>
  #include <Inventor/nodes/SoTranslation.h>
  
  #include <GL/gl.h>
  
  // *************************************************************************
  
  class MyExaminerViewer : public SoQtExaminerViewer {
  
  public:
    MyExaminerViewer(QWidget * parent, const char * filename);
    ~MyExaminerViewer();
  
  protected:
    virtual void actualRedraw(void);
  
  private:
    SoSeparator * bckgroundroot;
    SoSeparator * foregroundroot;
    SoRotationXYZ * arrowrotation;
  };
  
  MyExaminerViewer::MyExaminerViewer(QWidget * parent, const char * filename)
    : SoQtExaminerViewer(parent)
  {
    // Coin should not clear the pixel-buffer, so the background image
    // is not removed.
    this->setClearBeforeRender(FALSE, TRUE);
  
  
    // Set up background scenegraph with image in it.
  
    this->bckgroundroot = new SoSeparator;
    this->bckgroundroot->ref();
  
    SoOrthographicCamera * cam = new SoOrthographicCamera;
    cam->position = SbVec3f(0, 0, 1);
    cam->height = 1;
    // SoImage will be at z==0.0.
    cam->nearDistance = 0.5;
    cam->farDistance = 1.5;
  
    SoImage * img = new SoImage;
    img->vertAlignment = SoImage::HALF;
    img->horAlignment = SoImage::CENTER;
    img->filename = filename;
  
    this->bckgroundroot->addChild(cam);
    this->bckgroundroot->addChild(img);
  
    // Set up foreground, overlayed scenegraph.
  
    this->foregroundroot = new SoSeparator;
    this->foregroundroot->ref();
  
    SoLightModel * lm = new SoLightModel;
    lm->model = SoLightModel::BASE_COLOR;
  
    SoBaseColor * bc = new SoBaseColor;
    bc->rgb = SbColor(1, 1, 0);
  
    cam = new SoOrthographicCamera;
    cam->position = SbVec3f(0, 0, 5);
    cam->height = 10;
    cam->nearDistance = 0;
    cam->farDistance = 10;
  
    const double ARROWSIZE = 2.0;
  
    SoTranslation * posit = new SoTranslation;
    posit->translation = SbVec3f(-2.5 * ARROWSIZE, 1.5 * ARROWSIZE, 0);
  
    arrowrotation = new SoRotationXYZ;
    arrowrotation->axis = SoRotationXYZ::Z;
  
    SoTranslation * offset = new SoTranslation;
    offset->translation = SbVec3f(ARROWSIZE/2.0, 0, 0);
  
    SoCube * cube = new SoCube;
    cube->width = ARROWSIZE;
    cube->height = ARROWSIZE/15.0;
  
    this->foregroundroot->addChild(cam);
    this->foregroundroot->addChild(lm);
    this->foregroundroot->addChild(bc);
    this->foregroundroot->addChild(posit);
    this->foregroundroot->addChild(arrowrotation);
    this->foregroundroot->addChild(offset);
    this->foregroundroot->addChild(cube);
  }
  
  MyExaminerViewer::~MyExaminerViewer()
  {
    this->bckgroundroot->unref();
    this->foregroundroot->unref();
  }
  
  void
  MyExaminerViewer::actualRedraw(void)
  {
    // Must set up the OpenGL viewport manually, as upon resize
    // operations, Coin won't set it up until the SoGLRenderAction is
    // applied again. And since we need to do glClear() before applying
    // the action..
    const SbViewportRegion vp = this->getViewportRegion();
    SbVec2s origin = vp.getViewportOriginPixels();
    SbVec2s size = vp.getViewportSizePixels();
    glViewport(origin[0], origin[1], size[0], size[1]);
  
    const SbColor col = this->getBackgroundColor();
    glClearColor(col[0], col[1], col[2], 0.0f);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  
    // Render our scenegraph with the image.
    SoGLRenderAction * glra = this->getGLRenderAction();
    glra->apply(this->bckgroundroot);
  
  
    // Render normal scenegraph.
    SoQtExaminerViewer::actualRedraw();
  
  
    // Increase arrow angle with 1/1000 ° every frame.
    arrowrotation->angle = arrowrotation->angle.getValue() + (0.001 / M_PI * 180);
    // Render overlay front scenegraph.
    glClear(GL_DEPTH_BUFFER_BIT);
    glra->apply(this->foregroundroot);
  }
  
  // *************************************************************************
  
  int
  main(int argc, char ** argv)
  {
    if (argc != 2) {
      (void)fprintf(stderr, 'nntUsage: %s <image-filename>nn', argv[0]);
      exit(1);
    }
  
    QWidget * window = SoQt::init(argv[0]);
  
    MyExaminerViewer * viewer = new MyExaminerViewer(window, argv[1]);
  
    viewer->setSceneGraph(new SoCone);
    viewer->show();
  
    SoQt::show(window);
    SoQt::mainLoop();
  
    delete viewer;
    return 0;
  }
  
  // *************************************************************************

Reimplemented from SoQtViewer.

A function 'hook' / callback invoked just after the window for the component has been realized.

Override this if you need specific initialization for your own component or viewer class to happen right after it has been made visible, but remember to call upwards in the inheritance hierarchy:

  void
  MyLittleViewer::afterRealizeHook(void)
  {
    <superclass>::afterRealizeHook();
    // [own initialization here]
  }

Reimplemented from SoQtRenderArea.