VTK-5.0.0/Wrapping/Java/vtk/vtkCanvas.java

package vtk;
import vtk.*;
import javax.swing.Timer;
import java.awt.*;
import java.awt.event.*;

public class vtkCanvas extends vtkPanel implements MouseListener, MouseMotionListener, KeyListener
{
  protected vtkGenericRenderWindowInteractor iren = new vtkGenericRenderWindowInteractor();
  protected Timer timer = new Timer(10, new DelayAction());
  protected int ctrlPressed = 0;
  protected int shiftPressed = 0;
  protected vtkPlaneWidget pw = new vtkPlaneWidget();
  protected vtkBoxWidget bw = new vtkBoxWidget();
  
  static { 
    // load up hybrid for 3d widgets
    System.loadLibrary("vtkHybridJava"); 
    System.loadLibrary("vtkWidgetsJava");
  }

  public vtkCanvas()
  {
    super();
    iren.SetRenderWindow(rw);
    iren.AddObserver("CreateTimerEvent", this, "StartTimer");
    iren.AddObserver("DestroyTimerEvent", this, "DestroyTimer");
    iren.SetSize(200, 200);
    iren.ConfigureEvent();
    pw.AddObserver("EnableEvent", this, "BeginPlaneInteraction");
    bw.AddObserver("EnableEvent", this, "BeginBoxInteraction");
    pw.SetKeyPressActivationValue('l');
    bw.SetKeyPressActivationValue('b');
    pw.SetInteractor(iren);
    bw.SetInteractor(iren);

    addComponentListener(new ComponentAdapter()
      {
        public void componentResized(ComponentEvent event)
        {
          // The Canvas is being resized, get the new size
          int width = getWidth();
          int height = getHeight();
          setSize(width, height);
        }
      });

    ren.SetBackground(0.0, 0.0, 0.0);
  }

  public void StartTimer() {
    if (timer.isRunning())
      timer.stop();
    
    timer.setRepeats(false);

    timer.start();
    
  }

  public void DestroyTimer() {
    if (timer.isRunning())
      timer.stop();
  }

  public vtkGenericRenderWindowInteractor getIren() {
    return this.iren;
  }

  public void setInteractorStyle(vtkInteractorStyle style) {
    iren.SetInteractorStyle(style);
  }

  public void addToPlaneWidget(vtkProp3D prop) {
    pw.SetProp3D(prop);
    pw.PlaceWidget();
  }

  public void addToBoxWidget(vtkProp3D prop) {
    bw.SetProp3D(prop);
    bw.PlaceWidget();
  }

  public void BeginPlaneInteraction() {
    System.out.println("Plane widget begin interaction");
  }

  public void BeginBoxInteraction() {
    System.out.println("Box widget begin interaction");
  }
  
  public void setSize(int x, int y)
  {
    super.setSize(x,y);
    if (windowset == 1) {
      Lock();
      rw.SetSize(x,y);
      iren.SetSize(x, y);
      iren.ConfigureEvent();
      UnLock();
    }
  }
  
  public void mouseClicked(MouseEvent e) {
    
  }
  
  public void mousePressed(MouseEvent e)
  {
    if (ren.VisibleActorCount() == 0) return;
    Lock(); 
    rw.SetDesiredUpdateRate(5.0);
    lastX = e.getX();
    lastY = e.getY();

    ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1:0;
    shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1:0;
    
    int repeat = 0;
    if(e.getClickCount() != 1)
      repeat = 1;
    
    iren.SetEventInformationFlipY(e.getX(), e.getY(), 
                                  ctrlPressed, shiftPressed, '0', 0, "0");

    if ((e.getModifiers() & InputEvent.BUTTON1_MASK) == 
        InputEvent.BUTTON1_MASK) 
      {
        iren.LeftButtonPressEvent();
      }

    else if ((e.getModifiers() & InputEvent.BUTTON2_MASK) == 
        InputEvent.BUTTON2_MASK) {
      {
        iren.MiddleButtonPressEvent();
      }
    }

    else if ((e.getModifiers() & InputEvent.BUTTON3_MASK) == 
          InputEvent.BUTTON3_MASK) {
      {
        iren.RightButtonPressEvent();
      }
    }

    UnLock();
  }
  
  public void mouseReleased(MouseEvent e)
  {
    rw.SetDesiredUpdateRate(0.01);

    ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1:0;
    shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1:0;

    iren.SetEventInformationFlipY(e.getX(), e.getY(), 
                                  ctrlPressed, shiftPressed, '0', 0, "0");

    if ((e.getModifiers() & InputEvent.BUTTON1_MASK) == 
        InputEvent.BUTTON1_MASK) {
      Lock();
      iren.LeftButtonReleaseEvent();
      UnLock();
    }

    if ((e.getModifiers() & InputEvent.BUTTON2_MASK) == 
        InputEvent.BUTTON2_MASK) {
      Lock();
      iren.MiddleButtonReleaseEvent();
      UnLock();
    }

    if ((e.getModifiers() & InputEvent.BUTTON3_MASK) == 
        InputEvent.BUTTON3_MASK) {
      Lock();
      iren.RightButtonReleaseEvent();
      UnLock();
    }

  }
  
  public void mouseEntered(MouseEvent e) 
  {
    this.requestFocus();
    iren.SetEventInformationFlipY(e.getX(), e.getY(), 
                                  0, 0, '0', 0, "0");
    iren.EnterEvent();
  }
  
  public void mouseExited(MouseEvent e) {
    iren.SetEventInformationFlipY(e.getX(), e.getY(), 
                                  0, 0, '0', 0, "0");
    iren.LeaveEvent();
  }
  
  public void mouseMoved(MouseEvent e) 
  {
    lastX = e.getX();
    lastY = e.getY();

    ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1:0;
    shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1:0;

    iren.SetEventInformationFlipY(e.getX(), e.getY(), 
                                  ctrlPressed, shiftPressed, '0', 0, "0");

    Lock();
    iren.MouseMoveEvent();
    UnLock();
  }
  
  
  public void mouseDragged(MouseEvent e)
  {
    if (ren.VisibleActorCount() == 0) return;
    int x = e.getX();
    int y = e.getY();

    ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1:0;
    shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1:0;

    iren.SetEventInformationFlipY(e.getX(), e.getY(), 
                                  ctrlPressed, shiftPressed, '0', 0, "0");

    Lock();
    iren.MouseMoveEvent();
    UnLock();

    UpdateLight();
  }
  
  public void keyTyped(KeyEvent e) {}
  
  public void keyPressed(KeyEvent e)
  {
    if (ren.VisibleActorCount() == 0) return;
    char keyChar = e.getKeyChar();

    ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1:0;
    shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1:0;

    iren.SetEventInformationFlipY(lastX, lastY, 
                                  ctrlPressed, shiftPressed, keyChar, 0, String.valueOf(keyChar));

    Lock();
    iren.KeyPressEvent();
    iren.CharEvent();
    UnLock();
  }
  
  public void keyReleased(KeyEvent e) {}

  private class DelayAction implements ActionListener {
    public void actionPerformed(ActionEvent evt) {
      Lock();
      iren.TimerEvent();
      UpdateLight();
      UnLock();
    }
  } 

}