vtk.rendering/src/vtk/rendering/swt/vtkInternalSwtComponent.java

   1 package vtk.rendering.swt;
   2
   3 import org.eclipse.swt.SWT;
   4 import org.eclipse.swt.widgets.Composite;
   5 import org.eclipse.swt.widgets.Event;
   6 import org.eclipse.swt.widgets.Listener;
   7
   8 import com.jogamp.opengl.GLAutoDrawable;
   9 import com.jogamp.opengl.GLCapabilities;
  10 import com.jogamp.opengl.GLProfile;
  11 import com.jogamp.opengl.GLRunnable;
  12 import com.jogamp.opengl.swt.GLCanvas;
  13
  14 import vtk.vtkObject;
  15
  16 /**
  17  * @author    Joachim Pouderoux - joachim.pouderoux@kitware.com, Kitware SAS 2012
  18  * @copyright This work was supported by CEA/CESTA
  19  *            Commissariat a l'Energie Atomique et aux Energies Alternatives,
  20  *            15 avenue des Sablieres, CS 60001, 33116 Le Barp, France.
  21  */
  22 public class vtkInternalSwtComponent extends GLCanvas implements Listener {
  23
  24   private vtkSwtComponent parent;
  25
  26   public static GLCapabilities GetGLCapabilities() {
  27     GLCapabilities caps;
  28     caps = new GLCapabilities(GLProfile.get(GLProfile.GL2GL3));
  29     caps.setDoubleBuffered(true);
  30     caps.setHardwareAccelerated(true);
  31     caps.setSampleBuffers(false);
  32     caps.setNumSamples(4);
  33
  34     caps.setAlphaBits(8);
  35
  36     return caps;
  37   }
  38
  39   public vtkInternalSwtComponent(vtkSwtComponent parent, Composite parentComposite) {
  40
  41     super(parentComposite, SWT.NO_BACKGROUND, GetGLCapabilities(), null);
  42     this.parent = parent;
  43
  44     vtkSwtInteractorForwarderDecorator forwarder = (vtkSwtInteractorForwarderDecorator) this.parent
  45       .getInteractorForwarder();
  46
  47     this.addMouseListener(forwarder);
  48     this.addKeyListener(forwarder);
  49     this.addMouseMoveListener(forwarder);
  50     this.addMouseTrackListener(forwarder);
  51     this.addMouseWheelListener(forwarder);
  52
  53     this.addListener(SWT.Paint, this);
  54     this.addListener(SWT.Close, this);
  55     this.addListener(SWT.Dispose, this);
  56     this.addListener(SWT.Resize, this);
  57
  58     this.IntializeRenderWindow();
  59   }
  60
  61   protected void IntializeRenderWindow() {
  62
  63     // setCurrent(); // need to be done so SetWindowIdFromCurrentContext can
  64     // get the current context!
  65     // Context is not created until the first draw call. The renderer isn't
  66     // initialized until the context is
  67     // present.
  68     invoke(false, new GLRunnable() {
  69
  70       @Override
  71       public boolean run(GLAutoDrawable arg0) {
  72         // This makes this thread (should be the main thread) current
  73         getContext().makeCurrent();
  74         parent.getRenderWindow().InitializeFromCurrentContext();
  75         // Swapping buffers is handled by the vtkSwtComponent
  76         parent.getRenderWindow().SwapBuffersOff();
  77         return false;
  78       }
  79     });
  80
  81     // Swap buffers to trigger context creation
  82     swapBuffers();
  83     setAutoSwapBufferMode(false);
  84   }
  85
  86   @Override
  87   public void update() {
  88     super.update();
  89     if (isRealized()) {
  90       parent.Render();
  91     }
  92   }
  93
  94   @Override
  95   public void dispose() {
  96     this.removeListener(SWT.Paint, this);
  97     this.removeListener(SWT.Close, this);
  98     this.removeListener(SWT.Dispose, this);
  99     this.removeListener(SWT.Resize, this);
 100
 101     if (getContext().isCurrent()) {
 102       getContext().release();
 103     }
 104     super.dispose();
 105   }
 106
 107   @Override
 108   public void handleEvent(Event event) {
 109     switch (event.type) {
 110     case SWT.Paint:
 111       if (isRealized()) {
 112         parent.Render();
 113       }
 114       break;
 115     case SWT.Dispose:
 116       parent.Delete();
 117       vtkObject.JAVA_OBJECT_MANAGER.gc(false);
 118       break;
 119     case SWT.Close:
 120       // System.out.println("closing");
 121       break;
 122     case SWT.Resize:
 123       parent.setSize(getClientArea().width, getClientArea().height);
 124       break;
 125     }
 126   }
 127 }