org.eclipse.swt.widgets.Canvas.addListener()方法的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中org.eclipse.swt.widgets.Canvas.addListener()方法的一些代码示例，展示了Canvas.addListener()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Canvas.addListener()方法的具体详情如下：
包路径：org.eclipse.swt.widgets.Canvas
类名称：Canvas
方法名：addListener

Canvas.addListener介绍

暂无

代码示例

代码示例来源：origin: pentaho/pentaho-kettle

  1. text = new Text( parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL );
  2. canvas = new Canvas( parent, SWT.BORDER );
  3. canvas.addListener( SWT.Paint, new Listener() {
  4.  public void handleEvent( Event event ) {
  5.   paintCanvas( event );

代码示例来源：origin: org.eclipse/org.eclipse.help.ui

  1. public void addListener(int e, Listener l) {
  2.   super.addListener(e, l);
  3.   //label.addListener(e, l);
  4. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. private void createPieceDistPanel() {
  2.   comp.setLayout(new FillLayout());
  3.   //pieceDistComposite = new Composite(parent, SWT.NONE);
  4.   pieceDistCanvas = new Canvas(comp,SWT.NO_BACKGROUND);
  5.   pieceDistCanvas.addListener(SWT.Paint, new Listener() {
  6.     @Override
  7.     public void handleEvent(Event event) {
  8.       if ( pem==null || pem.isDestroyed()){
  9.         event.gc.fillRectangle(event.x, event.y, event.width, event.height);
  10.       }else{
  11.         if (imgToPaint != null && !imgToPaint.isDisposed()) {
  12.           event.gc.drawImage(imgToPaint, 0, 0);
  13.         }
  14.       }
  15.     }
  16.   });
  17. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. @Override
  2. public void initialize(Canvas canvas) {
  3.   super.initialize(canvas);
  4.   drawCanvas.addPaintListener(new PaintListener() {
  5.      @Override
  6.      public void paintControl(PaintEvent e) {
  7.        if (bufferImage != null && !bufferImage.isDisposed()) {
  8.          Rectangle bounds = bufferImage.getBounds();
  9.          if (bounds.width >= ( e.width + e.x ) && bounds.height >= ( e.height + e.y )) {
  10.            e.gc.drawImage(bufferImage, e.x, e.y, e.width, e.height, e.x, e.y,
  11.                e.width, e.height);
  12.          }
  13.        }
  14.      }
  15.    });
  16.   drawCanvas.addListener(SWT.Resize, new Listener() {
  17.      @Override
  18.      public void handleEvent(Event event) {
  19.        drawChart(true);
  20.      }
  21.    });
  22. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. canvas.addListener(SWT.Resize, new Listener() {
  2.    @Override
  3.    public void handleEvent(Event event) {

代码示例来源：origin: diffplug/gradle-and-eclipse-rcp

  1. public ColorPicker(Composite parent) {
  2.   super(new Canvas(parent, SWT.DOUBLE_BUFFERED));
  3.   setY(128);
  4.   wrapped.addListener(SWT.Paint, e -> {
  5.     Point size = wrapped.getSize();
  6.     Image img = getMapFor(e.display);
  7.     e.gc.drawImage(img, 0, 0, _256, _256, 0, 0, size.x, size.y);
  8.   });
  9.   mouseDown = SwtRx.addListener(wrapped, SWT.MouseDown).map(this::posToColor);
  10.   mouseMove = SwtRx.addListener(wrapped, SWT.MouseMove).map(this::posToColor);
  11. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. public void
  2. initialize(
  3.   Canvas     canvas,
  4.   boolean	is_active )
  5. {
  6.    super.initialize(canvas);
  7.    drawCanvas.addPaintListener(new PaintListener() {
  8.       @Override
  9.       public void paintControl(PaintEvent e) {
  10.         if (bufferImage != null && !bufferImage.isDisposed()) {
  11.           Rectangle bounds = bufferImage.getBounds();
  12.           if (bounds.width >= ( e.width + e.x ) && bounds.height >= ( e.height + e.y )) {
  13.             e.gc.drawImage(bufferImage, e.x, e.y, e.width, e.height, e.x, e.y, e.width, e.height);
  14.           }
  15.         }
  16.       }
  17.     });
  18.    drawCanvas.addListener(SWT.Resize, new Listener() {
  19.       @Override
  20.       public void handleEvent(Event event) {
  21.         drawChart(true);
  22.       }
  23.     });
  24.    setActive( is_active );
  25. }

代码示例来源：origin: com.diffplug.durian/durian-swt

  1. public NoBorderBtn(Composite parent) {
  2.   super(new Canvas(parent, SWT.NONE));
  3.   wrapped.addListener(SWT.Paint, e -> {
  4.     Point size = wrapped.getSize();
  5.     // fill the background based on the "enabled" status
  6.     Color backgroundColor = wrapped.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND);
  7.     e.gc.setBackground(backgroundColor);
  8.     e.gc.fillRectangle(0, 0, size.x, size.y);
  9.     // draw the image
  10.     if (img != null) {
  11.       int deltaX = size.x - imgBounds.width;
  12.       int deltaY = size.y - imgBounds.height;
  13.       e.gc.drawImage(img, deltaX / 2, deltaY / 2);
  14.     }
  15.   });
  16.   // send a selection event on each click (if we aren't disabled)
  17.   wrapped.addListener(SWT.MouseDown, e -> {
  18.     if (enabled) {
  19.       selection.onNext(this);
  20.     }
  21.   });
  22.   // send a "completed" event when we finish
  23.   wrapped.addListener(SWT.Dispose, e -> {
  24.     selection.onComplete();
  25.   });
  26. }

代码示例来源：origin: org.eclipse.rap/org.eclipse.rap.rwt

  1. /**
  2.  * Adds the listener to the collection of listeners who will
  3.  * be notified when the receiver needs to be painted, by sending it
  4.  * one of the messages defined in the <code>PaintListener</code>
  5.  * interface.
  6.  *
  7.  * @param listener the listener which should be notified
  8.  *
  9.  * @exception IllegalArgumentException <ul>
  10.  *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
  11.  * </ul>
  12.  * @exception SWTException <ul>
  13.  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  14.  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  15.  * </ul>
  16.  *
  17.  * @see PaintListener
  18.  * @see #removePaintListener
  19.  * @since 1.3
  20.  */
  21. public void addPaintListener( PaintListener listener ) {
  22.  checkWidget();
  23.  if( listener == null ) {
  24.   error( SWT.ERROR_NULL_ARGUMENT );
  25.  }
  26.  TypedListener typedListener = new TypedListener( listener );
  27.  addListener( SWT.Paint, typedListener );
  28. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. public AnimatedImage(Composite parent) {
  2.   canvas = new Canvas(parent,SWT.NO_BACKGROUND);
  3.   Color background = null;
  4.   Composite p = parent;
  5.   while(p != null && background == null) {
  6.     background = p.getBackground();
  7.     if(background != null) {
  8.       //System.out.println("background : " + background + ", composite : " + p);
  9.       break;
  10.     }
  11.     p = p.getParent();
  12.   }
  13.   canvas.setBackground(background);
  14.   canvas.addListener(SWT.Dispose, new Listener() {
  15.     @Override
  16.     public void handleEvent(Event event) {
  17.       stop();
  18.       disposeImages();
  19.     }
  20.   });
  21. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. drawCanvas.addListener(SWT.Resize, new Listener() {
  2.    @Override
  3.    public void handleEvent(Event event) {

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.examples

  1. void headerShowToolTip (int x) {
  2.   String tooltip = headerGetToolTip (x);
  3.   if (tooltip == null || tooltip.length () == 0) return;
  5.   if (toolTipShell == null) {
  6.     toolTipShell = new Shell (getShell (), SWT.ON_TOP | SWT.TOOL);
  7.     toolTipLabel = new Label (toolTipShell, SWT.CENTER);
  8.     Display display = toolTipShell.getDisplay ();
  9.     toolTipLabel.setForeground (display.getSystemColor (SWT.COLOR_INFO_FOREGROUND));
  10.     toolTipLabel.setBackground (display.getSystemColor (SWT.COLOR_INFO_BACKGROUND));
  11.     for (int toolTipEvent : toolTipEvents) {
  12.       header.addListener (toolTipEvent, toolTipListener);
  13.     }
  14.   }
  15.   if (headerUpdateToolTip (x)) {
  16.     toolTipShell.setVisible (true);
  17.   } else {
  18.     headerHideToolTip ();
  19.   }
  20. }
  21. boolean headerUpdateToolTip (int x) {

代码示例来源：origin: org.xworker/xworker_swt

  1. imageCanvas.addListener(SWT.MouseDown, this);
  2. imageCanvas.addListener(SWT.MouseMove, this);
  3. imageCanvas.addListener(SWT.MouseHover, this);		
  4. imageCanvas.addListener(SWT.MouseUp, this);
  5. imageCanvas.addListener(SWT.KeyDown, this);
  6. imageCanvas.addListener(SWT.KeyUp, this);
  7. imageCanvas.addListener(SWT.MouseWheel, this);
  8. imageCanvas.addPaintListener(this);

代码示例来源：origin: BiglySoftware/BiglyBT

  1. cHeaderArea.addListener(SWT.MenuDetect, new Listener() {
  2.   @Override
  3.   public void handleEvent(Event event) {

代码示例来源：origin: org.eclipse/org.eclipse.jdt.ui

  1. protected void adjustItemNumber() {
  2.   if (fComposite == null)
  3.     return;
  4.   Control[] children= fComposite.getChildren();
  5.   int oldSize= children.length;
  6.   int newSize= fInput == null ? 0 : fInput.fAnnotations.length;
  7.   Display display= fShell.getDisplay();
  8.   // add missing items
  9.   for (int i= oldSize; i < newSize; i++) {
  10.     Canvas canvas= new Canvas(fComposite, SWT.NONE);
  11.     Object gridData= fLayouter.getLayoutData();
  12.     canvas.setLayoutData(gridData);
  13.     canvas.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
  14.     canvas.addPaintListener(fPaintListener);
  15.     canvas.addMouseTrackListener(fMouseTrackListener);
  16.     canvas.addMouseListener(fMouseListener);
  17.     canvas.addListener(SWT.MenuDetect, fMenuDetectListener);
  18.     canvas.addDisposeListener(fDisposeListener);
  19.   }
  20.   // dispose of exceeding resources
  21.   for (int i= oldSize; i > newSize; i--) {
  22.     Item item= (Item) children[i - 1].getData();
  23.     item.deselect();
  24.     children[i - 1].dispose();
  25.   }
  26. }

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jdt.ui

  1. protected void adjustItemNumber() {
  2.   if (fComposite == null)
  3.     return;
  4.   Control[] children= fComposite.getChildren();
  5.   int oldSize= children.length;
  6.   int newSize= fInput == null ? 0 : fInput.fAnnotations.length;
  7.   Display display= fShell.getDisplay();
  8.   // add missing items
  9.   for (int i= oldSize; i < newSize; i++) {
  10.     Canvas canvas= new Canvas(fComposite, SWT.NONE);
  11.     Object gridData= fLayouter.getLayoutData();
  12.     canvas.setLayoutData(gridData);
  13.     canvas.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
  14.     canvas.addPaintListener(fPaintListener);
  15.     canvas.addMouseTrackListener(fMouseTrackListener);
  16.     canvas.addMouseListener(fMouseListener);
  17.     canvas.addListener(SWT.MenuDetect, fMenuDetectListener);
  18.     canvas.addDisposeListener(fDisposeListener);
  19.   }
  20.   // dispose of exceeding resources
  21.   for (int i= oldSize; i > newSize; i--) {
  22.     Item item= (Item) children[i - 1].getData();
  23.     item.deselect();
  24.     children[i - 1].dispose();
  25.   }
  26. }

代码示例来源：origin: org.eclipse.jdt/org.eclipse.jdt.ui

  1. protected void adjustItemNumber() {
  2.   if (fComposite == null)
  3.     return;
  4.   Control[] children= fComposite.getChildren();
  5.   int oldSize= children.length;
  6.   int newSize= fInput == null ? 0 : fInput.fAnnotations.length;
  7.   Display display= fShell.getDisplay();
  8.   // add missing items
  9.   for (int i= oldSize; i < newSize; i++) {
  10.     Canvas canvas= new Canvas(fComposite, SWT.NONE);
  11.     Object gridData= fLayouter.getLayoutData();
  12.     canvas.setLayoutData(gridData);
  13.     canvas.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
  14.     canvas.addPaintListener(fPaintListener);
  15.     canvas.addMouseTrackListener(fMouseTrackListener);
  16.     canvas.addMouseListener(fMouseListener);
  17.     canvas.addListener(SWT.MenuDetect, fMenuDetectListener);
  18.     canvas.addDisposeListener(fDisposeListener);
  19.   }
  20.   // dispose of exceeding resources
  21.   for (int i= oldSize; i > newSize; i--) {
  22.     Item item= (Item) children[i - 1].getData();
  23.     item.deselect();
  24.     children[i - 1].dispose();
  25.   }
  26. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. canvas.addListener(SWT.Resize, new Listener() {
  2.   @Override
  3.   public void handleEvent(Event event) {

代码示例来源：origin: BiglySoftware/BiglyBT

  1. canvas.addListener(SWT.Resize, new Listener() {
  2.   @Override
  3.   public void handleEvent(Event event) {

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.examples

  1. void createCanvas(Composite parent) {
  2.   int style = SWT.NO_BACKGROUND;
  3.   if (dbItem.getSelection()) style |= SWT.DOUBLE_BUFFERED;
  4.   canvas = new Canvas(parent, style);
  5.   canvas.addListener(SWT.Paint, event -> {
  6.     GC gc = event.gc;
  7.     Rectangle rect = canvas.getClientArea();
  8.     Device device = gc.getDevice();
  9.     Pattern pattern = null;
  10.     if (background.getBgColor1() != null) {
  11.       if (background.getBgColor2() != null) { // gradient
  12.         pattern = new Pattern(device, 0, 0, rect.width,
  13.             rect.height,
  14.             background.getBgColor1(),
  15.             background.getBgColor2());
  16.         gc.setBackgroundPattern(pattern);
  17.       } else {	// solid color
  18.         gc.setBackground(background.getBgColor1());
  19.       }
  20.     } else if (background.getBgImage() != null) {		// image
  21.       pattern = new Pattern(device, background.getBgImage());
  22.       gc.setBackgroundPattern(pattern);
  23.     }
  24.     gc.fillRectangle(rect);
  25.     GraphicsTab tab = getTab();
  26.     if (tab != null) tab.paint(gc, rect.width, rect.height);
  27.     if (pattern != null) pattern.dispose();
  28.   });
  29. }

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