private BufferedImage createCompatibleImage(int w, int h, int transparency) {
   Window window = screen;
   if (window != null) {
     GraphicsConfiguration gc = window.getGraphicsConfiguration();
     return gc.createCompatibleImage(w, h, transparency);
   }
   return null;
 }
Ejemplo n.º 2
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  public void setOpaque(boolean isOpaque) {
    synchronized (getStateLock()) {
      if (this.isOpaque == isOpaque) {
        return;
      }
    }

    Window target = (Window) getTarget();

    if (!isOpaque) {
      SunToolkit sunToolkit = (SunToolkit) target.getToolkit();
      if (!sunToolkit.isWindowTranslucencySupported()
          || !sunToolkit.isTranslucencyCapable(target.getGraphicsConfiguration())) {
        return;
      }
    }

    boolean isVistaOS = Win32GraphicsEnvironment.isVistaOS();

    if (this.isOpaque != isOpaque && !isVistaOS) {
      // non-Vista OS: only replace the surface data if the opacity
      // status changed (see WComponentPeer.isAccelCapable() for more)
      replaceSurfaceDataRecursively(target);
    }

    synchronized (getStateLock()) {
      this.isOpaque = isOpaque;
      setOpaqueImpl(isOpaque);
      if (isOpaque) {
        TranslucentWindowPainter currentPainter = painter;
        if (currentPainter != null) {
          currentPainter.flush();
          painter = null;
        }
      } else {
        painter = TranslucentWindowPainter.createInstance(this);
      }
    }

    if (isVistaOS) {
      // On Vista: setting the window non-opaque makes the window look
      // rectangular, though still catching the mouse clicks within
      // its shape only. To restore the correct visual appearance
      // of the window (i.e. w/ the correct shape) we have to reset
      // the shape.
      Shape shape = target.getShape();
      if (shape != null) {
        target.setShape(shape);
      }
    }

    if (target.isVisible()) {
      updateWindow(true);
    }
  }