java.awt.GraphicsConfiguration Java Examples

/**
 * Creates an Image from the specified Icon
 * 
 * @param icon
 *            that should be converted to an image
 * @return the new image
 */
public static Image iconToImage(Icon icon) {
    if (icon instanceof ImageIcon) {
        return ((ImageIcon) icon).getImage();
    } else {
        int w = icon.getIconWidth();
        int h = icon.getIconHeight();
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = ge.getDefaultScreenDevice();
        GraphicsConfiguration gc = gd.getDefaultConfiguration();
        BufferedImage image = gc.createCompatibleImage(w, h);
        Graphics2D g = image.createGraphics();
        icon.paintIcon(null, g, 0, 0);
        g.dispose();
        return image;
    }
}
 

private static BufferedImage makeUnmanagedBI(GraphicsConfiguration gc,
                                             int type) {
    BufferedImage img = gc.createCompatibleImage(SIZE, SIZE, type);
    Graphics2D g2d = img.createGraphics();
    g2d.setColor(RGB);
    g2d.fillRect(0, 0, SIZE, SIZE);
    g2d.dispose();
    final DataBuffer db = img.getRaster().getDataBuffer();
    if (db instanceof DataBufferInt) {
        ((DataBufferInt) db).getData();
    } else if (db instanceof DataBufferShort) {
        ((DataBufferShort) db).getData();
    } else if (db instanceof DataBufferByte) {
        ((DataBufferByte) db).getData();
    } else {
        try {
            img.setAccelerationPriority(0.0f);
        } catch (final Throwable ignored) {
        }
    }
    return img;
}
 

/**
 * Creates a software-based surface (of type BufImgSurfaceData).
 * The software representation is only created when needed, which
 * is only during some situation in which the hardware surface
 * cannot be allocated.  This allows apps to at least run,
 * albeit more slowly than they would otherwise.
 */
protected SurfaceData getBackupSurface() {
    if (sdBackup == null) {
        GraphicsConfiguration gc = vImg.getGraphicsConfig();
        AffineTransform tx = gc.getDefaultTransform();
        double scaleX = tx.getScaleX();
        double scaleY = tx.getScaleY();
        BufferedImage bImg = vImg.getBackupImage(scaleX, scaleY);
        // Sabotage the acceleration capabilities of the BufImg surface
        SunWritableRaster.stealTrackable(bImg
                                         .getRaster()
                                         .getDataBuffer()).setUntrackable();
        sdBackup = BufImgSurfaceData.createData(bImg, scaleX, scaleY);
    }
    return sdBackup;
}
 

public static void main(String[] args) {

        boolean iaeThrown = false;
        GraphicsEnvironment ge = GraphicsEnvironment.
                                      getLocalGraphicsEnvironment();
        GraphicsConfiguration gc = ge.getDefaultScreenDevice().
                                           getDefaultConfiguration();
        try {
            VolatileImage volatileImage = gc.createCompatibleVolatileImage(0, 0);
        } catch (IllegalArgumentException iae) {
            iaeThrown = true;
        }
        if (!iaeThrown) {
            throw new RuntimeException ("IllegalArgumentException not thrown " +
                                        "for createCompatibleVolatileImage(0,0)");
        }
    }
 

@Override
protected Image getBackBuffer(boolean clear) {
    int w = window.getWidth();
    int h = window.getHeight();
    GraphicsConfiguration gc = peer.getGraphicsConfiguration();

    if (viBB == null || viBB.getWidth() != w || viBB.getHeight() != h ||
        viBB.validate(gc) == IMAGE_INCOMPATIBLE)
    {
        flush();

        if (gc instanceof AccelGraphicsConfig) {
            AccelGraphicsConfig agc = ((AccelGraphicsConfig)gc);
            viBB = agc.createCompatibleVolatileImage(w, h,
                                                     TRANSLUCENT,
                                                     RT_PLAIN);
        }
        if (viBB == null) {
            viBB = gc.createCompatibleVolatileImage(w, h, TRANSLUCENT);
        }
        viBB.validate(gc);
    }

    return clear ? clearImage(viBB) : viBB;
}
 

private void runTest() {
    GraphicsConfiguration gc = GraphicsEnvironment.
        getLocalGraphicsEnvironment().getDefaultScreenDevice().
            getDefaultConfiguration();

    if (gc.getColorModel().getPixelSize() < 16) {
        System.out.println("8-bit desktop depth found, test passed");
        return;
    }

    VolatileImage vi = gc.createCompatibleVolatileImage(R_WIDTH, R_HEIGHT);
    BufferedImage bi = null;
    do {
        vi.validate(gc);
        Graphics2D g = vi.createGraphics();
        render(g, vi.getWidth(), vi.getHeight());
        bi = vi.getSnapshot();
    } while (vi.contentsLost());

    checkBI(bi);
    System.out.println("Test PASSED.");
}
 

public boolean updateGraphicsData(GraphicsConfiguration gc) {
    int oldVisual = -1, newVisual = -1;

    if (graphicsConfig != null) {
        oldVisual = graphicsConfig.getVisual();
    }
    if (gc != null && gc instanceof X11GraphicsConfig) {
        newVisual = ((X11GraphicsConfig)gc).getVisual();
    }

    // If the new visual differs from the old one, the peer must be
    // recreated because X11 does not allow changing the visual on the fly.
    // So we even skip the initGraphicsConfiguration() call.
    // The initial assignment should happen though, hence the != -1 thing.
    if (oldVisual != -1 && oldVisual != newVisual) {
        return true;
    }

    initGraphicsConfiguration();
    doValidateSurface();
    return false;
}
 

public static void main(String[] args) {
    GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gd = ge.getDefaultScreenDevice();
    GraphicsConfiguration gc = gd.getDefaultConfiguration();
    testGC(gc);

    if (failed) {
        throw new RuntimeException("Test FAILED. See err output for more");
    }

    System.out.println("Test PASSED.");
}
 

/**
 * Need to override the default behavior because Pixmaps-based
 * images are accelerated but not volatile.
 */
@Override
public ImageCapabilities getCapabilities(GraphicsConfiguration gc) {
    if (isConfigValid(gc) && isAccelerationEnabled()) {
        return new ImageCapabilities(true);
    }
    return new ImageCapabilities(false);
}
 

private DisplayMode getDefaultDisplayMode() {
    GraphicsConfiguration gc = getDefaultConfiguration();
    Rectangle r = gc.getBounds();
    return new DisplayMode(r.width, r.height,
                           DisplayMode.BIT_DEPTH_MULTI,
                           DisplayMode.REFRESH_RATE_UNKNOWN);
}
 

public static void main(final String[] args) {
    final GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
    final GraphicsDevice gd = ge.getDefaultScreenDevice();
    final GraphicsConfiguration gc = gd.getDefaultConfiguration();
    final VolatileImage vi =
            gc.createCompatibleVolatileImage(SIZE, SIZE, TRANSLUCENT);
    final BufferedImage bi = makeUnmanagedBI(gc, TRANSLUCENT);
    final int expected = bi.getRGB(2, 2);

    int attempt = 0;
    BufferedImage snapshot;
    while (true) {
        if (++attempt > 10) {
            throw new RuntimeException("Too many attempts: " + attempt);
        }
        vi.validate(gc);
        final Graphics2D g2d = vi.createGraphics();
        g2d.setComposite(AlphaComposite.Src);
        g2d.scale(2, 2);
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                             RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        g2d.drawImage(bi, 0, 0, null);
        g2d.dispose();

        snapshot = vi.getSnapshot();
        if (vi.contentsLost()) {
            continue;
        }
        break;
    }
    final int actual = snapshot.getRGB(2, 2);
    if (actual != expected) {
        System.err.println("Actual: " + Integer.toHexString(actual));
        System.err.println("Expected: " + Integer.toHexString(expected));
        throw new RuntimeException("Test failed");
    }
}
 

/**
 * Constructor for the solitary "page setup" dialog
 */
public ServiceDialog(GraphicsConfiguration gc,
                     int x, int y,
                     PrintService ps,
                     DocFlavor flavor,
                     PrintRequestAttributeSet attributes,
                     Dialog dialog)
{
    super(dialog, getMsg("dialog.pstitle"), true, gc);
    initPageDialog(x, y, ps, flavor, attributes);
}
 

static Image getBufferedImage(GraphicsConfiguration gc,
                              int w, int h, int type, boolean acceleratable)
{
    BufferedImage image = new BufferedImage(w, h, type);
    if (!acceleratable) {
        image.setAccelerationPriority(0.0f);
    }
    initImage(gc, image);
    return image;
}
 

public static void main(String[] args) {
    GraphicsEnvironment ge = GraphicsEnvironment
            .getLocalGraphicsEnvironment();
    GraphicsConfiguration gc = ge.getDefaultScreenDevice()
                                 .getDefaultConfiguration();
    VolatileImage vi = gc.createCompatibleVolatileImage(100, 100);

    Graphics2D g2d = vi.createGraphics();
    g2d.scale(2, 2);
    BufferedImage img = new BufferedImage(50, 50,
                                          BufferedImage.TYPE_INT_ARGB);

    g2d.drawImage(img, 10, 25, Color.blue, null);
    g2d.dispose();
}
 

/**
 * Need to override the default behavior because Pixmaps-based
 * images are accelerated but not volatile.
 */
@Override
public ImageCapabilities getCapabilities(GraphicsConfiguration gc) {
    if (isConfigValid(gc) && isAccelerationEnabled()) {
        return new ImageCapabilities(true);
    }
    return new ImageCapabilities(false);
}
 

public static void main(String[] args) {

        GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = ge.getDefaultScreenDevice();
        GraphicsConfiguration gc = gd.getDefaultConfiguration();
        VolatileImage vi = gc.createCompatibleVolatileImage(16, 16);
        vi.validate(gc);

        BufferedImage bi =
            new BufferedImage(2, 2, BufferedImage.TYPE_INT_RGB);
        int data[] = ((DataBufferInt)bi.getRaster().getDataBuffer()).getData();
        data[0] = 0x0000007f;
        data[1] = 0x0000007f;
        data[2] = 0xff00007f;
        data[3] = 0xff00007f;
        Graphics2D g = vi.createGraphics();
        g.setComposite(AlphaComposite.SrcOver.derive(0.999f));
        g.drawImage(bi, 0, 0, null);

        bi = vi.getSnapshot();
        if (bi.getRGB(0, 0) != bi.getRGB(1, 1)) {
            throw new RuntimeException("Test FAILED: color at 0x0 ="+
                Integer.toHexString(bi.getRGB(0, 0))+" differs from 1x1 ="+
                Integer.toHexString(bi.getRGB(1,1)));
        }

        System.out.println("Test PASSED.");
    }
 

private static VolatileImage makeVI(final int type) {
    final GraphicsEnvironment ge = GraphicsEnvironment
            .getLocalGraphicsEnvironment();
    final GraphicsDevice gd = ge.getDefaultScreenDevice();
    final GraphicsConfiguration gc = gd.getDefaultConfiguration();
    return gc.createCompatibleVolatileImage(SIZE, SIZE, type);
}
 

public static void main(final String[] args) throws IOException {
    GraphicsEnvironment ge = GraphicsEnvironment
            .getLocalGraphicsEnvironment();
    GraphicsConfiguration gc = ge.getDefaultScreenDevice()
                                 .getDefaultConfiguration();
    AffineTransform at;
    for (final int size : SIZES) {
        for (final int scale : SCALES) {
            final int sw = size * scale;
            at = AffineTransform.getScaleInstance(sw, sw);
            for (Shape clip : SHAPES) {
                clip = at.createTransformedShape(clip);
                for (Shape to : SHAPES) {
                    to = at.createTransformedShape(to);
                    // Prepare test images
                    VolatileImage vi = getVolatileImage(gc, size);
                    BufferedImage bi = getBufferedImage(sw);
                    // Prepare gold images
                    BufferedImage goldvi = getCompatibleImage(gc, size);
                    BufferedImage goldbi = getBufferedImage(sw);
                    draw(clip, to, vi, bi, scale);
                    draw(clip, to, goldvi, goldbi, scale);
                    validate(bi, goldbi);
                }
            }
        }
    }
}
 

/**
 * Invokes the given Runnable on the OGL QueueFlusher thread with the
 * "shared" OpenGL context (corresponding to the given
 * GraphicsConfiguration object) made current.  This method is typically
 * used when the Runnable needs a current context to complete its
 * operation, but does not require that the context be made current to
 * a particular surface.  For example, an application may call this
 * method so that the given Runnable can query the OpenGL capabilities
 * of the given GraphicsConfiguration, without making a context current
 * to a dummy surface (or similar hacky techniques).
 *
 * In order to avoid deadlock, it is important that the given Runnable
 * does not attempt to acquire the AWT lock, as that will be handled
 * automatically as part of the <code>rq.flushAndInvokeNow()</code> step.
 *
 * @param config the GraphicsConfiguration object whose "shared"
 * context will be made current during this operation; if this value is
 * null or if OpenGL is not enabled for the GraphicsConfiguration, this
 * method will return false
 * @param r the action to be performed on the QFT; cannot be null
 * @return true if the operation completed successfully, or false if
 * there was any problem making the shared context current
 */
public static boolean
    invokeWithOGLSharedContextCurrent(GraphicsConfiguration config,
                                      Runnable r)
{
    if (!(config instanceof OGLGraphicsConfig)) {
        return false;
    }

    OGLRenderQueue rq = OGLRenderQueue.getInstance();
    rq.lock();
    try {
        // make the "shared" context current for the given GraphicsConfig
        OGLContext.setScratchSurface((OGLGraphicsConfig)config);

        // invoke the given runnable on the QFT
        rq.flushAndInvokeNow(r);

        // invalidate the current context so that the next time we render
        // with Java 2D, the context state will be completely revalidated
        OGLContext.invalidateCurrentContext();
    } finally {
        rq.unlock();
    }

    return true;
}
 

public static void main(String[] args) {
    GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gd = ge.getDefaultScreenDevice();
    GraphicsConfiguration gc = gd.getDefaultConfiguration();
    testGC(gc);

    if (failed) {
        throw new RuntimeException("Test FAILED. See err output for more");
    }

    System.out.println("Test PASSED.");
}
 

static Image getBMImage(GraphicsConfiguration gc,
                        int w, int h)
{
    Image image =
        gc.createCompatibleImage(w, h, Transparency.BITMASK);
    initImage(gc, image);
    return image;
}
 

public static Rectangle2D getFullScreenBounds() {
	// NOTE! main monitor must be top left, otherwise, override x+y position  
	Rectangle2D result = new Rectangle2D.Double();
	GraphicsEnvironment localGE = GraphicsEnvironment.getLocalGraphicsEnvironment();
	for (GraphicsDevice gd : localGE.getScreenDevices()) {
		for (GraphicsConfiguration graphicsConfiguration : gd.getConfigurations()) {
			Rectangle2D.union(result, graphicsConfiguration.getBounds(), result);
		}
	}
	return result;
}
 

/**
 * Need to override the default behavior because Pixmaps-based
 * images are accelerated but not volatile.
 */
@Override
public ImageCapabilities getCapabilities(GraphicsConfiguration gc) {
    if (isConfigValid(gc) && isAccelerationEnabled()) {
        // accelerated but not volatile
        return new ImageCapabilities(true);
    }
    // neither accelerated nor volatile
    return new ImageCapabilities(false);
}
 

private static void testVolatileImage(GraphicsConfiguration cfg,
        boolean accelerated)
{
    VolatileImage dst = null;
    try {
        dst = cfg.createCompatibleVolatileImage(640, 480,
            new ImageCapabilities(accelerated));
    } catch (AWTException e) {
        System.out.println("Unable to create volatile image, skip the test.");
        return;
    }
    renderToVolatileImage(dst);
}
 

public static void main(final String[] args) {
    final GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
    final GraphicsDevice gd = ge.getDefaultScreenDevice();
    final GraphicsConfiguration gc = gd.getDefaultConfiguration();
    final VolatileImage vi =
            gc.createCompatibleVolatileImage(SIZE, SIZE, TRANSLUCENT);
    final BufferedImage bi = makeUnmanagedBI(gc, TRANSLUCENT);
    final int expected = bi.getRGB(2, 2);

    int attempt = 0;
    BufferedImage snapshot;
    while (true) {
        if (++attempt > 10) {
            throw new RuntimeException("Too many attempts: " + attempt);
        }
        vi.validate(gc);
        final Graphics2D g2d = vi.createGraphics();
        g2d.setComposite(AlphaComposite.Src);
        g2d.scale(2, 2);
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                             RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        g2d.drawImage(bi, 0, 0, null);
        g2d.dispose();

        snapshot = vi.getSnapshot();
        if (vi.contentsLost()) {
            continue;
        }
        break;
    }
    final int actual = snapshot.getRGB(2, 2);
    if (actual != expected) {
        System.err.println("Actual: " + Integer.toHexString(actual));
        System.err.println("Expected: " + Integer.toHexString(expected));
        throw new RuntimeException("Test failed");
    }
}
 

private void calcImageBufferSize() {
	GraphicsConfiguration config = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()
			.getDefaultConfiguration();

	BufferedImage buff = config.createCompatibleImage(1, 1, Transparency.TRANSLUCENT);
	Graphics2D g2 = buff.createGraphics();
	g2.setFont(font);

	LineMetrics lm = font.getLineMetrics(String.valueOf(icon), g2.getFontRenderContext());
	iconWidth = g2.getFontMetrics().charWidth(icon.getChar());
	iconHeight = (int) lm.getHeight();
	iconBaseline = (int) (lm.getHeight() - lm.getLeading() - lm.getDescent());
	g2.dispose();
}
 

/**
 * Constructor for the solitary "page setup" dialog
 */
public ServiceDialog(GraphicsConfiguration gc,
                     int x, int y,
                     PrintService ps,
                     DocFlavor flavor,
                     PrintRequestAttributeSet attributes,
                     Frame frame)
{
    super(frame, getMsg("dialog.pstitle"), true, gc);
    initPageDialog(x, y, ps, flavor, attributes);
}
 

private static VolatileImage getVolatileImage(GraphicsConfiguration gc,
                                              int size) {
    VolatileImage vi = gc.createCompatibleVolatileImage(size, size);
    Graphics2D g2d = vi.createGraphics();
    g2d.setColor(Color.GREEN);
    g2d.fillRect(0, 0, size, size);
    return vi;
}
 

private void runTest(Graphics g) {
    int status = IMAGE_OK;
    int count1 = 0;
    do {
        GraphicsConfiguration gc = getGraphicsConfiguration();
        int count2 = 0;
        while (vi == null || (status = vi.validate(gc)) != IMAGE_OK) {
            if (++count2 > LOOP_THRESHOLD) {
                System.err.println("Infinite loop detected: count2="+count2);
                failed = true;
                return;
            }
            if (vi == null || status == IMAGE_INCOMPATIBLE) {
                if (vi != null) { vi.flush(); vi = null; }
                vi = gc.createCompatibleVolatileImage(100, 100);
                continue;
            }
            if (status == IMAGE_RESTORED) {
                Graphics gg = vi.getGraphics();
                gg.setColor(Color.green);
                gg.fillRect(0, 0, vi.getWidth(), vi.getHeight());
                break;
            }
        }
        g.drawImage(vi, getInsets().left, getInsets().top, null);
        if (++count1 > LOOP_THRESHOLD) {
            System.err.println("Infinite loop detected: count1="+count1);
            failed = true;
            return;
        }
    } while (vi.contentsLost());
}
 

private SunVolatileImage(Component comp,
                         GraphicsConfiguration graphicsConfig,
                         int width, int height, Object context,
                         ImageCapabilities caps)
{
    this(comp, graphicsConfig,
         width, height, context, Transparency.OPAQUE, caps, UNDEFINED);
}