org.eclipse.swt.widgets.Canvas.update()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.update()方法的一些代码示例，展示了Canvas.update()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.update()方法的具体详情如下：
包路径：org.eclipse.swt.widgets.Canvas
类名称：Canvas
方法名：update

Canvas.update介绍

暂无

代码示例

代码示例来源：origin: pentaho/pentaho-kettle

  1. public void refresh() {
  2.  canvas.update();
  3. }

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface.text

  1. @Override
  2. public void viewportChanged(int topPixel) {
  3.   int delta= topPixel - fLastTopPixel;
  4.   if (scrollVertical(delta))
  5.     fCanvas.update(); // force update the invalidated regions
  6. }

代码示例来源：origin: org.eclipse.platform/org.eclipse.jface.text

  1. @Override
  2. public void viewportChanged(int topPixel) {
  3.   int delta= topPixel - fLastTopPixel;
  4.   if (scrollVertical(delta))
  5.     fCanvas.update(); // force update the invalidated regions
  6. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. @Override
  2.   public void runSupport() {
  3.     updating = false;
  4.     if (splash == null || splash.isDisposed()) {
  5.       return;
  6.     }
  7.     canvas.redraw(0, height - 50, width, height, true);
  8.     canvas.update();
  9.   }
  10. });

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

  1. /**
  2.  * Handles a horizontal scroll event
  3.  *
  4.  * @param scrollbar the horizontal scroll bar that posted this event
  5.  */
  6. public void scrollHorizontally(ScrollBar scrollBar) {
  7.   if (image == null) return;
  8.   if (imageWidth > visibleWidth) {
  9.     final int oldOffset = displayFDC.xOffset;
  10.     final int newOffset = Math.min(scrollBar.getSelection(), imageWidth - visibleWidth);
  11.     if (oldOffset != newOffset) {
  12.       paintCanvas.update();
  13.       displayFDC.xOffset = newOffset;
  14.       paintCanvas.scroll(Math.max(oldOffset - newOffset, 0), 0, Math.max(newOffset - oldOffset, 0), 0,
  15.         visibleWidth, visibleHeight, false);
  16.     }
  17.   }
  18. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. @Override
  2.   public void runSupport() {
  3.     if (canvas != null && !canvas.isDisposed()) {
  4.       canvas.redraw();
  5.       canvas.update();
  6.     }
  7.   }
  8. });

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

  1. /**
  2.  * Handles a vertical scroll event
  3.  *
  4.  * @param scrollbar the vertical scroll bar that posted this event
  5.  */
  6. public void scrollVertically(ScrollBar scrollBar) {
  7.   if (image == null) return;
  8.   if (imageHeight > visibleHeight) {
  9.     final int oldOffset = displayFDC.yOffset;
  10.     final int newOffset = Math.min(scrollBar.getSelection(), imageHeight - visibleHeight);
  11.     if (oldOffset != newOffset) {
  12.       paintCanvas.update();
  13.       displayFDC.yOffset = newOffset;
  14.       paintCanvas.scroll(0, Math.max(oldOffset - newOffset, 0), 0, Math.max(newOffset - oldOffset, 0),
  15.         visibleWidth, visibleHeight, false);
  16.     }
  17.   }
  18. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. @Override
  2.   public void runSupport() {
  3.     if (canvas != null && !canvas.isDisposed()) {
  4.       canvas.redraw();
  5.       canvas.update();
  6.     }
  7.   }
  8. });

代码示例来源：origin: BiglySoftware/BiglyBT

  1. @Override
  2.   public void runSupport() {
  3.     if (canvas != null && !canvas.isDisposed()) {
  4.       canvas.redraw();
  5.       canvas.update();
  6.     }
  7.   }
  8. });

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface.text

  1. @Override
  2. public void redraw() {
  3.   if (fCanvas != null && !fCanvas.isDisposed()) {
  4.     if (VerticalRuler.AVOID_NEW_GC) {
  5.       fCanvas.redraw();
  6.       fCanvas.update();
  7.     } else {
  8.       GC gc= new GC(fCanvas);
  9.       doubleBufferPaint(gc);
  10.       gc.dispose();
  11.     }
  12.   }
  13. }

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface.text

  1. @Override
  2. public void redraw() {
  3.   if (fCachedTextViewer != null && fCanvas != null && !fCanvas.isDisposed()) {
  4.     if (VerticalRuler.AVOID_NEW_GC) {
  5.       fCanvas.redraw();
  6.       fCanvas.update();
  7.     } else {
  8.       GC gc= new GC(fCanvas);
  9.       doubleBufferPaint(gc);
  10.       gc.dispose();
  11.     }
  12.   }
  13. }

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface.text

  1. /**
  2.  * Redraws the vertical ruler.
  3.  */
  4. private void redraw() {
  5.   if (fCanvas != null && !fCanvas.isDisposed()) {
  6.     if (AVOID_NEW_GC) {
  7.       fCanvas.redraw();
  8.       fCanvas.update();
  9.     } else {
  10.       GC gc= new GC(fCanvas);
  11.       doubleBufferPaint(gc);
  12.       gc.dispose();
  13.     }
  14.   }
  15. }

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface.text

  1. /**
  2.  * Redraws the overview ruler.
  3.  */
  4. private void redraw() {
  5.   if (fTextViewer == null || fModel == null)
  6.     return;
  7.   if (fCanvas != null && !fCanvas.isDisposed()) {
  8.     if (VerticalRuler.AVOID_NEW_GC) {
  9.       fCanvas.redraw();
  10.       fCanvas.update();
  11.     } else {
  12.       GC gc= new GC(fCanvas);
  13.       doubleBufferPaint(gc);
  14.       gc.dispose();
  15.     }
  16.   }
  17. }

代码示例来源：origin: BiglySoftware/BiglyBT

  1. drawCanvas.update();

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface.text

  1. @Override
  2. public void redraw() {
  3.   if (fRelayoutRequired) {
  4.     layout(true);
  5.     return;
  6.   }
  7.   if (fCachedTextViewer != null && fCanvas != null && !fCanvas.isDisposed()) {
  8.     if (VerticalRuler.AVOID_NEW_GC) {
  9.       fCanvas.redraw();
  10.       fCanvas.update();
  11.     } else {
  12.       GC gc= new GC(fCanvas);
  13.       doubleBufferPaint(gc);
  14.       gc.dispose();
  15.     }
  16.   }
  17. }

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

  1. @Override
  2.   public void run() {
  3.     if (canvas.isDisposed()) return;
  4.     int timeout = TIMER;
  5.     GraphicsTab tab = getTab();
  6.     if (tab instanceof AnimatedGraphicsTab) {
  7.       AnimatedGraphicsTab animTab = (AnimatedGraphicsTab) tab;
  8.       if (animate && animTab.getAnimation()) {
  9.         Rectangle rect = canvas.getClientArea();
  10.         animTab.next(rect.width, rect.height);
  11.         canvas.redraw();
  12.         canvas.update();
  13.       }
  14.       timeout =  animTab.getAnimationTime();
  15.     }
  16.     display.timerExec(timeout, this);
  17.   }
  18. });

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

  1. paintCanvas.update();

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

  1. void onArrowLeft (int stateMask) {
  2.   if (horizontalOffset == 0) return;
  3.   int newSelection = Math.max (0, horizontalOffset - SIZE_HORIZONTALSCROLL);
  4.   update ();
  5.   GC gc = new GC (this);
  6.   gc.copyArea (
  7.     0, 0,
  8.     clientArea.width, clientArea.height,
  9.     horizontalOffset - newSelection, 0);
  10.   gc.dispose ();
  11.   if (header.getVisible ()) {
  12.     header.update ();
  13.     Rectangle headerClientArea = header.getClientArea ();
  14.     gc = new GC (header);
  15.     gc.copyArea (
  16.       0, 0,
  17.       headerClientArea.width, headerClientArea.height,
  18.       horizontalOffset - newSelection, 0);
  19.     gc.dispose();
  20.   }
  21.   horizontalOffset = newSelection;
  22.   ScrollBar hBar = getHorizontalBar ();
  23.   if (hBar != null) hBar.setSelection (horizontalOffset);
  24. }
  25. void onArrowRight (int stateMask) {

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

  1. void onArrowRight (int stateMask) {
  2.   ScrollBar hBar = getHorizontalBar ();
  3.   if (hBar == null) return;
  4.   int maximum = hBar.getMaximum ();
  5.   int clientWidth = clientArea.width;
  6.   if ((horizontalOffset + clientArea.width) == maximum) return;
  7.   if (maximum <= clientWidth) return;
  8.   int newSelection = Math.min (horizontalOffset + SIZE_HORIZONTALSCROLL, maximum - clientWidth);
  9.   update ();
  10.   GC gc = new GC (this);
  11.   gc.copyArea (
  12.     0, 0,
  13.     clientArea.width, clientArea.height,
  14.     horizontalOffset - newSelection, 0);
  15.   gc.dispose ();
  16.   if (header.getVisible ()) {
  17.     Rectangle headerClientArea = header.getClientArea ();
  18.     header.update ();
  19.     gc = new GC (header);
  20.     gc.copyArea (
  21.       0, 0,
  22.       headerClientArea.width, headerClientArea.height,
  23.       horizontalOffset - newSelection, 0);
  24.     gc.dispose();
  25.   }
  26.   horizontalOffset = newSelection;
  27.   hBar.setSelection (horizontalOffset);
  28. }
  29. void onArrowUp (int stateMask) {

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

  1. void onScrollHorizontal (Event event) {
  2.   ScrollBar hBar = getHorizontalBar ();
  3.   if (hBar == null) return;
  4.   int newSelection = hBar.getSelection ();
  5.   update ();
  6.   if (itemsCount > 0) {
  7.     GC gc = new GC (this);
  8.     gc.copyArea (
  9.       0, 0,
  10.       clientArea.width, clientArea.height,
  11.       horizontalOffset - newSelection, 0);
  12.     gc.dispose ();
  13.   } else {
  14.     redraw ();    /* ensure that static focus rectangle updates properly */
  15.   }
  17.   if (drawCount <= 0 && header.isVisible ()) {
  18.     header.update ();
  19.     Rectangle headerClientArea = header.getClientArea ();
  20.     GC gc = new GC (header);
  21.     gc.copyArea (
  22.       0, 0,
  23.       headerClientArea.width, headerClientArea.height,
  24.       horizontalOffset - newSelection, 0);
  25.     gc.dispose ();
  26.   }
  27.   horizontalOffset = newSelection;
  28. }
  29. void onScrollVertical (Event event) {

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