Examples of VolatileImage

ae.java.awt.image.VolatileImage
e creation VolatileImage vImg = createVolatileImage(w, h); // rendering to the image void renderOffscreen() { do { if (vImg.validate(getGraphicsConfiguration()) == VolatileImage.IMAGE_INCOMPATIBLE) { // old vImg doesn't work with new GraphicsConfig; re-create it vImg = createVolatileImage(w, h); } Graphics2D g = vImg.createGraphics(); // // miscellaneous rendering commands... // g.dispose(); } while (vImg.contentsLost()); } // copying from the image (here, gScreen is the Graphics // object for the onscreen window) do { int returnCode = vImg.validate(getGraphicsConfiguration()); if (returnCode == VolatileImage.IMAGE_RESTORED) { // Contents need to be restored renderOffscreen(); // restore contents } else if (returnCode == VolatileImage.IMAGE_INCOMPATIBLE) { // old vImg doesn't work with new GraphicsConfig; re-create it vImg = createVolatileImage(w, h); renderOffscreen(); } gScreen.drawImage(vImg, 0, 0, this); } while (vImg.contentsLost());
Note that this class subclasses from the {@link Image} class, whichincludes methods that take an {@link ImageObserver} parameter forasynchronous notifications as information is received from a potential {@link ImageProducer}. Since this VolatileImage is not loaded from an asynchronous source, the various methods that take an ImageObserver parameter will behave as if the data has already been obtained from the ImageProducer. Specifically, this means that the return values from such methods will never indicate that the information is not yet available and the ImageObserver used in such methods will never need to be recorded for an asynchronous callback notification. @since 1.4
com.google.code.appengine.awt.image.VolatileImage
Volatile image implementation
java.awt.image.VolatileImage
e creation VolatileImage vImg = createVolatileImage(w, h); // rendering to the image void renderOffscreen() { do { if (vImg.validate(getGraphicsConfiguration()) == VolatileImage.IMAGE_INCOMPATIBLE) { // old vImg doesn't work with new GraphicsConfig; re-create it vImg = createVolatileImage(w, h); } Graphics2D g = vImg.createGraphics(); // // miscellaneous rendering commands... // g.dispose(); } while (vImg.contentsLost()); } // copying from the image (here, gScreen is the Graphics // object for the onscreen window) do { int returnCode = vImg.validate(getGraphicsConfiguration()); if (returnCode == VolatileImage.IMAGE_RESTORED) { // Contents need to be restored renderOffscreen(); // restore contents } else if (returnCode == VolatileImage.IMAGE_INCOMPATIBLE) { // old vImg doesn't work with new GraphicsConfig; re-create it vImg = createVolatileImage(w, h); renderOffscreen(); } gScreen.drawImage(vImg, 0, 0, this); } while (vImg.contentsLost());
Note that this class subclasses from the {@link Image} class, whichincludes methods that take an {@link ImageObserver} parameter forasynchronous notifications as information is received from a potential {@link ImageProducer}. Since this VolatileImage is not loaded from an asynchronous source, the various methods that take an ImageObserver parameter will behave as if the data has already been obtained from the ImageProducer. Specifically, this means that the return values from such methods will never indicate that the information is not yet available and the ImageObserver used in such methods will never need to be recorded for an asynchronous callback notification. @since 1.4

Examples of java.awt.image.VolatileImage

     * @since 1.5
     */
    public VolatileImage createCompatibleVolatileImage(int width, int height,
  ImageCapabilities caps, int transparency) throws AWTException
    {
        VolatileImage vi = 
            new SunVolatileImage(this, width, height, transparency, caps);
        if (caps != null && caps.isAccelerated() &&
            !vi.getCapabilities().isAccelerated()) 
        {
            throw new AWTException("Supplied image capabilities could not " +
                                   "be met by this graphics configuration.");
        }
        return vi;

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Examples of java.awt.image.VolatileImage

     * model is compatible with this <code>GraphicsConfiguration</code>.
     * @see Component#createVolatileImage(int, int)
     * @since 1.4
     */
    public VolatileImage createCompatibleVolatileImage(int width, int height) {
        VolatileImage vi = null;
        try {
            vi = createCompatibleVolatileImage(width, height,
                                               null, Transparency.OPAQUE);
        } catch (AWTException e) {
            // shouldn't happen: we're passing in null caps

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Examples of java.awt.image.VolatileImage

     * @since 1.5
     */
    public VolatileImage createCompatibleVolatileImage(int width, int height,
                                                       int transparency)
    {
        VolatileImage vi = null;
        try {
            vi = createCompatibleVolatileImage(width, height, null, transparency);
        } catch (AWTException e) {
            // shouldn't happen: we're passing in null caps
            assert false;

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Examples of java.awt.image.VolatileImage

     * @since 1.5
     */
    public VolatileImage createCompatibleVolatileImage(int width, int height,
        ImageCapabilities caps, int transparency) throws AWTException
    {
        VolatileImage vi =
            new SunVolatileImage(this, width, height, transparency, caps);
        if (caps != null && caps.isAccelerated() &&
            !vi.getCapabilities().isAccelerated())
        {
            throw new AWTException("Supplied image capabilities could not " +
                                   "be met by this graphics configuration.");
        }
        return vi;

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Examples of java.awt.image.VolatileImage

        Dimension maxSize = getDoubleBufferMaximumSize();
        int width = proposedWidth < 1 ? 1 :
            (proposedWidth > maxSize.width? maxSize.width : proposedWidth);
        int height = proposedHeight < 1 ? 1 :
            (proposedHeight > maxSize.height? maxSize.height : proposedHeight);
        VolatileImage image = volatileMap.get(config);
        if (image == null || image.getWidth() < width ||
                             image.getHeight() < height) {
            if (image != null) {
                image.flush();
            }
            image = config.createCompatibleVolatileImage(width, height);
            volatileMap.put(config, image);
        }
        return image;

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Examples of java.awt.image.VolatileImage

        }
        // Clear out the VolatileImages
        Iterator gcs = volatileMap.keySet().iterator();
        while (gcs.hasNext()) {
            GraphicsConfiguration gc = (GraphicsConfiguration)gcs.next();
            VolatileImage image = volatileMap.get(gc);
            if (image.getWidth() > width || image.getHeight() > height) {
                image.flush();
                gcs.remove();
            }
        }
    }

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Examples of java.awt.image.VolatileImage

            boolean paintCompleted = false;
            Image offscreen;
            if (repaintManager.useVolatileDoubleBuffer() &&
                (offscreen = getValidImage(repaintManager.
                getVolatileOffscreenBuffer(bufferComponent, w, h))) != null) {
                VolatileImage vImage = (java.awt.image.VolatileImage)offscreen;
                GraphicsConfiguration gc = bufferComponent.
                                            getGraphicsConfiguration();
                for (int i = 0; !paintCompleted &&
                         i < RepaintManager.VOLATILE_LOOP_MAX; i++) {
                    if (vImage.validate(gc) ==
                                   VolatileImage.IMAGE_INCOMPATIBLE) {
                        repaintManager.resetVolatileDoubleBuffer(gc);
                        offscreen = repaintManager.getVolatileOffscreenBuffer(
                            bufferComponent,w, h);
                        vImage = (java.awt.image.VolatileImage)offscreen;
                    }
                    paintDoubleBuffered(paintingComponent, vImage, g, x, y,
                                        w, h);
                    paintCompleted = !vImage.contentsLost();
                }
            }
            // VolatileImage painting loop failed, fallback to regular
            // offscreen buffer
            if (!paintCompleted && (offscreen = getValidImage(

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Examples of java.awt.image.VolatileImage

            }
            GraphicsConfiguration gc = getGraphicsConfiguration();
            if (gc == null) {
                return null;
            }
            VolatileImage image = gc.createCompatibleVolatileImage(width, height, caps);
            fillImageBackground(image, width, height);
            return image;
        } finally {
            toolkit.unlockAWT();
        }

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Examples of java.awt.image.VolatileImage

            }
            GraphicsConfiguration gc = getGraphicsConfiguration();
            if (gc == null) {
                return null;
            }
            VolatileImage image = gc.createCompatibleVolatileImage(width, height);
            fillImageBackground(image, width, height);
            return image;
        } finally {
            toolkit.unlockAWT();
        }

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Examples of java.awt.image.VolatileImage

                return _convertToVolatile(data, pobs, flush);
        }


        private VolatileImage _convertToVolatile(Object data, Component pobs, boolean flush) {
                renderableImpl.io.obs = pobs;
                VolatileImage vdata = null;
                if (data == null) {
                        if (isDebugEnabled()) {
                                System.err.println("no data to convert " + toString());
                        }
                        return null;

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