Java Code Examples for java.awt.GraphicsEnvironment

/**
	 * Convert the image into a compatible format for local rendering.
	 * @param img the bufferedImage
	 * @return the converted image
	 */
	BufferedImage optimizeImage(BufferedImage img) {
		BufferedImage img2 = GraphicsEnvironment.getLocalGraphicsEnvironment()
				.getDefaultScreenDevice().getDefaultConfiguration()
				.createCompatibleImage(
					img.getWidth(),
					img.getHeight(),
					img.getColorModel().getTransparency()
//					img.getColorModel().hasAlpha() ? Transparency.BITMASK
//						: Transparency.OPAQUE
						);
			Graphics2D g = img2.createGraphics();
			g.drawImage(img, 0, 0, null);
			g.dispose();
		 
			return img2;
	}
 

/**
 * Returns the <code>Desktop</code> instance of the current
 * browser context.  On some platforms the Desktop API may not be
 * supported; use the {@link #isDesktopSupported} method to
 * determine if the current desktop is supported.
 * @return the Desktop instance of the current browser context
 * @throws HeadlessException if {@link
 * GraphicsEnvironment#isHeadless()} returns {@code true}
 * @throws UnsupportedOperationException if this class is not
 * supported on the current platform
 * @see #isDesktopSupported()
 * @see java.awt.GraphicsEnvironment#isHeadless
 */
public static synchronized Desktop getDesktop(){
    if (GraphicsEnvironment.isHeadless()) throw new HeadlessException();
    if (!Desktop.isDesktopSupported()) {
        throw new UnsupportedOperationException("Desktop API is not " +
                                                "supported on the current platform");
    }

    sun.awt.AppContext context = sun.awt.AppContext.getAppContext();
    Desktop desktop = (Desktop)context.get(Desktop.class);

    if (desktop == null) {
        desktop = new Desktop();
        context.put(Desktop.class, desktop);
    }

    return desktop;
}
 

/**
 * Computes the maximum bounds of the current screen device. If this method is called on JDK 1.4, Xinerama-aware
 * results are returned. (See Sun-Bug-ID 4463949 for details).
 *
 * @return the maximum bounds of the current screen.
 */
private static Rectangle getMaximumWindowBounds()
{
  try
  {
    final GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
    return localGraphicsEnvironment.getMaximumWindowBounds();
  }
  catch (Exception e)
  {
    // ignore ... will fail if this is not a JDK 1.4 ..
  }

  final Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
  return new Rectangle(0, 0, s.width, s.height);
}
 

public static void main(String[] args) {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice graphicDevice = ge.getDefaultScreenDevice();
    if (!graphicDevice.isDisplayChangeSupported()) {
        System.err.println("Display mode change is not supported on this host. Test is considered passed.");
        return;
    }
    DisplayMode defaultDisplayMode = graphicDevice.getDisplayMode();
    checkDisplayMode(defaultDisplayMode);
    graphicDevice.setDisplayMode(defaultDisplayMode);

    DisplayMode[] displayModes = graphicDevice.getDisplayModes();
    boolean isDefaultDisplayModeIncluded = false;
    for (DisplayMode displayMode : displayModes) {
        checkDisplayMode(displayMode);
        graphicDevice.setDisplayMode(displayMode);
        if (defaultDisplayMode.equals(displayMode)) {
            isDefaultDisplayModeIncluded = true;
        }
    }

    if (!isDefaultDisplayModeIncluded) {
        throw new RuntimeException("Default display mode is not included");
    }
}
 

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.");
}
 

/**
* Computes the maximum bounds of the current screen device. If this method is called on JDK 1.4, Xinerama-aware
* results are returned. (See Sun-Bug-ID 4463949 for details).
*
* @return the maximum bounds of the current screen.
* @deprecated this method is not useful in multi-screen environments.
*/
 public static Rectangle getMaximumWindowBounds ()
 {
   final GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
   try
   {
     final Method method = GraphicsEnvironment.class.getMethod("getMaximumWindowBounds", (Class[]) null);
     return (Rectangle) method.invoke(localGraphicsEnvironment, (Object[]) null);
   }
   catch(Exception e)
   {
     // ignore ... will fail if this is not a JDK 1.4 ..
   }

   final Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
   return new Rectangle (0, 0, s.width, s.height);
 }
 

public static void main(String[] args) {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice graphicDevice = ge.getDefaultScreenDevice();
    if (!graphicDevice.isDisplayChangeSupported()) {
        System.err.println("Display mode change is not supported on this host. Test is considered passed.");
        return;
    }
    DisplayMode defaultDisplayMode = graphicDevice.getDisplayMode();
    checkDisplayMode(defaultDisplayMode);
    graphicDevice.setDisplayMode(defaultDisplayMode);

    DisplayMode[] displayModes = graphicDevice.getDisplayModes();
    boolean isDefaultDisplayModeIncluded = false;
    for (DisplayMode displayMode : displayModes) {
        checkDisplayMode(displayMode);
        graphicDevice.setDisplayMode(displayMode);
        if (defaultDisplayMode.equals(displayMode)) {
            isDefaultDisplayModeIncluded = true;
        }
    }

    if (!isDefaultDisplayModeIncluded) {
        throw new RuntimeException("Default display mode is not included");
    }
}
 

public static void main(String[] args) {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice graphicDevice = ge.getDefaultScreenDevice();
    if (!graphicDevice.isDisplayChangeSupported()) {
        System.err.println("Display mode change is not supported on this host. Test is considered passed.");
        return;
    }
    DisplayMode defaultDisplayMode = graphicDevice.getDisplayMode();
    checkDisplayMode(defaultDisplayMode);
    graphicDevice.setDisplayMode(defaultDisplayMode);

    DisplayMode[] displayModes = graphicDevice.getDisplayModes();
    boolean isDefaultDisplayModeIncluded = false;
    for (DisplayMode displayMode : displayModes) {
        checkDisplayMode(displayMode);
        graphicDevice.setDisplayMode(displayMode);
        if (defaultDisplayMode.equals(displayMode)) {
            isDefaultDisplayModeIncluded = true;
        }
    }

    if (!isDefaultDisplayModeIncluded) {
        throw new RuntimeException("Default display mode is not included");
    }
}
 

/**
 * Center a frame on the main display
 *
 * @param frame
 *            The frame to center
 */
public static void centerFrameOnMainDisplay(final JFrame frame) {
	final GraphicsEnvironment ge = GraphicsEnvironment
			.getLocalGraphicsEnvironment();
	final GraphicsDevice[] screens = ge.getScreenDevices();
	if (screens.length < 1) {
		return; // Silently fail.
	}
	final Rectangle screenBounds = screens[0].getDefaultConfiguration()
			.getBounds();
	final int x = (int) ((screenBounds.getWidth() - frame.getWidth()) / 2);
	final int y = (int) ((screenBounds.getHeight() - frame.getHeight()) / 2);
	frame.setLocation(x, y);
}
 

public static void main(String[] args) throws InterruptedException {
    if (Beans.isGuiAvailable() == GraphicsEnvironment.isHeadless()) {
        throw new Error("unexpected GuiAvailable property");
    }
    Beans.setGuiAvailable(!Beans.isGuiAvailable());
    ThreadGroup group = new ThreadGroup("$$$");
    Thread thread = new Thread(group, new TestGuiAvailable());
    thread.start();
    thread.join();
}
 

protected String[] getFontFamilies() {
    if (fontFamilyNames == null) {
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        fontFamilyNames = env.getAvailableFontFamilyNames();
    }
    return fontFamilyNames;
}
 

public static CGLGraphicsConfig getGC(CPlatformView pView) {
    if (pView != null) {
        return (CGLGraphicsConfig)pView.getGraphicsConfiguration();
    } else {
        // REMIND: this should rarely (never?) happen, but what if
        // default config is not CGL?
        GraphicsEnvironment env = GraphicsEnvironment
            .getLocalGraphicsEnvironment();
        GraphicsDevice gd = env.getDefaultScreenDevice();
        return (CGLGraphicsConfig) gd.getDefaultConfiguration();
    }
}
 

static boolean checkGraphicsEnvironment() {
    if (GraphicsEnvironment.getLocalGraphicsEnvironment().isHeadless()) {
        System.err.println("Cannot run test in a headless environment");
    }
    DisplayMode dm =
            GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDisplayMode();
    int i = dm.getBitDepth();
    if (i == dm.BIT_DEPTH_MULTI || i >= 16) {
        return true;
    }
    return false;
}
 

private void test() {
    GraphicsConfiguration gc =
        GraphicsEnvironment.getLocalGraphicsEnvironment().
            getDefaultScreenDevice().getDefaultConfiguration();
    if (gc.getColorModel().getPixelSize() < 16) {
        System.out.println("<16 bit depth detected, test passed");
        return;
    }

    VolatileImage vi =
        gc.createCompatibleVolatileImage(250, 4*120, Transparency.OPAQUE);
    BufferedImage res;
    do {
        vi.validate(gc);
        Graphics2D g2d = vi.createGraphics();
        g2d.setColor(Color.white);
        g2d.fillRect(0, 0, vi.getWidth(), vi.getHeight());

        render(g2d);

        res = vi.getSnapshot();
    } while (vi.contentsLost());

    for (int y = 0; y < bi.getHeight(); y++) {
        for (int x = 0; x < bi.getWidth(); x++) {
            if (res.getRGB(x, y) == Color.black.getRGB()) {
                System.err.printf("Test FAILED: found black at %d,%d\n",
                                  x, y);
                try {
                    String fileName = "AccelPaintsTest.png";
                    ImageIO.write(res, "png", new File(fileName));
                    System.err.println("Dumped rendering to " + fileName);
                } catch (IOException e) {}
                throw new RuntimeException("Test FAILED: found black");
            }
        }
    }
}
 

public static void main(final String[] args)
        throws InvocationTargetException, InterruptedException {
    SwingUtilities.invokeAndWait(() -> {
        final GraphicsDevice[] devices =
                GraphicsEnvironment.getLocalGraphicsEnvironment()
                                   .getScreenDevices();
        final Frame frame = new Frame();
        frame.setBackground(Color.GREEN);
        frame.setUndecorated(true);
        frame.setSize(100, 100);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
        sleep();
        for (final GraphicsDevice gd : devices) {
            try {
                gd.setFullScreenWindow(frame);
                if (gd.getFullScreenWindow() != frame) {
                    throw new RuntimeException("Wrong window");
                }
                if (frame.getGraphicsConfiguration().getDevice() != gd) {
                    throw new RuntimeException("Wrong new GraphicsDevice");
                }
            } finally {
                // cleaning up
                gd.setFullScreenWindow(null);
            }
        }
        frame.dispose();
    });
}
 

/**
 * Starts a recording of the screen
 * 
 * @param testFileName
 *            The name of the video file to create
 * @throws Exception
 */
private void startRecording(String testFileName) throws Exception {
	GraphicsConfiguration gc = GraphicsEnvironment
			.getLocalGraphicsEnvironment().getDefaultScreenDevice()
			.getDefaultConfiguration();
	this.screenRecorder = new SpecializedScreenRecorder(gc, testFileName,
			config);
	this.screenRecorder.start();

}
 

public static void main(String[] args) throws InterruptedException {
    if (Beans.isGuiAvailable() == GraphicsEnvironment.isHeadless()) {
        throw new Error("unexpected GuiAvailable property");
    }
    Beans.setGuiAvailable(!Beans.isGuiAvailable());
    ThreadGroup group = new ThreadGroup("$$$");
    Thread thread = new Thread(group, new TestGuiAvailable());
    thread.start();
    thread.join();
}
 

public static void main(String[] args) throws Exception {

       Frame frame = new Frame();
        final Toolkit toolkit = Toolkit.getDefaultToolkit();
        final GraphicsEnvironment graphicsEnvironment =
                GraphicsEnvironment.getLocalGraphicsEnvironment();
        final GraphicsDevice graphicsDevice =
                graphicsEnvironment.getDefaultScreenDevice();

        final Dimension screenSize = toolkit.getScreenSize();
        final Insets screenInsets = toolkit.getScreenInsets(
                graphicsDevice.getDefaultConfiguration());

        final Rectangle availableScreenBounds = new Rectangle(screenSize);

        availableScreenBounds.x += screenInsets.left;
        availableScreenBounds.y += screenInsets.top;
        availableScreenBounds.width -= (screenInsets.left + screenInsets.right);
        availableScreenBounds.height -= (screenInsets.top + screenInsets.bottom);

        frame.setBounds(availableScreenBounds.x, availableScreenBounds.y,
                availableScreenBounds.width, availableScreenBounds.height);
        frame.setVisible(true);

        Rectangle frameBounds = frame.getBounds();
        frame.setExtendedState(Frame.MAXIMIZED_BOTH);
        ((SunToolkit) toolkit).realSync();

        Rectangle maximizedFrameBounds = frame.getBounds();
        if (maximizedFrameBounds.width < frameBounds.width
                || maximizedFrameBounds.height < frameBounds.height) {
            throw new RuntimeException("Maximized frame is smaller than non maximized");
        }
    }
 

public static WGLGraphicsConfig getGC(WComponentPeer peer) {
    if (peer != null) {
        return (WGLGraphicsConfig)peer.getGraphicsConfiguration();
    } else {
        // REMIND: this should rarely (never?) happen, but what if
        //         default config is not WGL?
        GraphicsEnvironment env =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = env.getDefaultScreenDevice();
        return (WGLGraphicsConfig)gd.getDefaultConfiguration();
    }
}
 

public void testActiveEditorDropAnnotated() throws IOException {
    clearWorkDir();
    assertTrue("Headless run", GraphicsEnvironment.isHeadless());
    AnnotationProcessorTestUtils.makeSource(getWorkDir(), "test.B",
            "import org.netbeans.spi.palette.PaletteItemRegistration;\n"
            + "import org.openide.text.ActiveEditorDrop;\n;import javax.swing.text.JTextComponent;"
            + VALID_CLASS_ANNOTATION
            + "public class B implements ActiveEditorDrop {\n"
            + "     public boolean handleTransfer(JTextComponent targetComponent) {return true; }"
            + "}\n");
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    boolean r = AnnotationProcessorTestUtils.runJavac(getWorkDir(), null, getWorkDir(), null, os);
    assertTrue("Compilation has to be successfull:\n" + os, r);
}
 

public static Vector<String> getSystemFonts() {
	GraphicsEnvironment gEnv = GraphicsEnvironment.getLocalGraphicsEnvironment();
	Font[] tempFonts = gEnv.getAllFonts();

	char dot = '.';
	int dotIndex = 0;

	char[] fontNameChars = null;
	String fontName = null;
	Vector<String> fontNames = new Vector<String>();

	for (int i = 0; i < tempFonts.length; i++) {

		fontName = tempFonts[i].getFontName();
		dotIndex = fontName.indexOf(dot);

		if (dotIndex == -1) {
			fontNames.add(fontName);
		} else {
			fontNameChars = fontName.substring(0, dotIndex).toCharArray();
			fontNameChars[0] = Character.toUpperCase(fontNameChars[0]);

			fontName = new String(fontNameChars);

			if (!fontNames.contains(fontName)) {
				fontNames.add(fontName);
			}

		}

	}

	Collections.sort(fontNames);
	return fontNames;
}
 

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);
}
 

/**
 * Get all available fonts (system fonts, weather font and custom fonts)
 *
 * @return Font list
 */
public static List<Font> getAllFonts() {
    List<Font> fontList = new ArrayList<>();

    //Weather font
    Font weatherFont = getWeatherFont();
    if (weatherFont != null) {
        fontList.add(weatherFont);
    }

    //System fonts
    GraphicsEnvironment gEnv = GraphicsEnvironment.getLocalGraphicsEnvironment();
    Font[] fonts = gEnv.getAllFonts();
    for (Font font : fonts) {
        fontList.add(font);
    }

    //Custom fonts
    String fn = GlobalUtil.getAppPath(MapFrame.class);
    fn = fn.substring(0, fn.lastIndexOf("/"));
    String path = fn + File.separator + "font";
    File pathDir = new File(path);
    if (pathDir.isDirectory()) {
        
    }

    return fontList;
}
 

public static void main(String args[]) {
  GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
  Font[] fonts = ge.getAllFonts();
  for (int i=0;i<fonts.length;i++) {
   System.out.println("Fam="+fonts[i].getFamily()+
         ", Full="+ fonts[i].getFontName()+
       ", ps="+ fonts[i].getPSName()+", "+fonts[i]);
  }
}
 

private static D3DGraphicsConfig getGC(WComponentPeer peer) {
    GraphicsConfiguration gc;
    if (peer != null) {
        gc =  peer.getGraphicsConfiguration();
    } else {
        GraphicsEnvironment env =
                GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = env.getDefaultScreenDevice();
        gc = gd.getDefaultConfiguration();
    }
    return (gc instanceof D3DGraphicsConfig) ? (D3DGraphicsConfig)gc : null;
}
 

@Override
public boolean isDisplayChangeSupported() {
    return (isFullScreenSupported()
            && (getFullScreenWindow() != null)
            && !((X11GraphicsEnvironment) GraphicsEnvironment
                    .getLocalGraphicsEnvironment()).runningXinerama());
}
 

public static void main(String[] args) throws Exception {

       Frame frame = new Frame();
        final Toolkit toolkit = Toolkit.getDefaultToolkit();
        final GraphicsEnvironment graphicsEnvironment =
                GraphicsEnvironment.getLocalGraphicsEnvironment();
        final GraphicsDevice graphicsDevice =
                graphicsEnvironment.getDefaultScreenDevice();

        final Dimension screenSize = toolkit.getScreenSize();
        final Insets screenInsets = toolkit.getScreenInsets(
                graphicsDevice.getDefaultConfiguration());

        final Rectangle availableScreenBounds = new Rectangle(screenSize);

        availableScreenBounds.x += screenInsets.left;
        availableScreenBounds.y += screenInsets.top;
        availableScreenBounds.width -= (screenInsets.left + screenInsets.right);
        availableScreenBounds.height -= (screenInsets.top + screenInsets.bottom);

        frame.setBounds(availableScreenBounds.x, availableScreenBounds.y,
                availableScreenBounds.width, availableScreenBounds.height);
        frame.setVisible(true);

        Rectangle frameBounds = frame.getBounds();
        frame.setExtendedState(Frame.MAXIMIZED_BOTH);
        ((SunToolkit) toolkit).realSync();

        Rectangle maximizedFrameBounds = frame.getBounds();
        if (maximizedFrameBounds.width < frameBounds.width
                || maximizedFrameBounds.height < frameBounds.height) {
            throw new RuntimeException("Maximized frame is smaller than non maximized");
        }
    }
 

public static CGLGraphicsConfig getGC(CPlatformView pView) {
    if (pView != null) {
        return (CGLGraphicsConfig)pView.getGraphicsConfiguration();
    } else {
        // REMIND: this should rarely (never?) happen, but what if
        // default config is not CGL?
        GraphicsEnvironment env = GraphicsEnvironment
            .getLocalGraphicsEnvironment();
        GraphicsDevice gd = env.getDefaultScreenDevice();
        return (CGLGraphicsConfig) gd.getDefaultConfiguration();
    }
}
 

private static void test(final BufferedImage bi) throws IOException {
    GraphicsEnvironment ge = GraphicsEnvironment
            .getLocalGraphicsEnvironment();
    GraphicsConfiguration gc = ge.getDefaultScreenDevice()
                                 .getDefaultConfiguration();
    VolatileImage vi = gc.createCompatibleVolatileImage(500, 200,
                                                        TRANSLUCENT);
    BufferedImage gold = gc.createCompatibleImage(500, 200, TRANSLUCENT);
    // draw to compatible Image
    draw(bi, gold);
    // draw to volatile image
    int attempt = 0;
    BufferedImage snapshot;
    while (true) {
        if (++attempt > 10) {
            throw new RuntimeException("Too many attempts: " + attempt);
        }
        vi.validate(gc);
        if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
            continue;
        }
        draw(bi, vi);
        snapshot = vi.getSnapshot();
        if (vi.contentsLost()) {
            continue;
        }
        break;
    }
    // validate images
    for (int x = 0; x < gold.getWidth(); ++x) {
        for (int y = 0; y < gold.getHeight(); ++y) {
            if (gold.getRGB(x, y) != snapshot.getRGB(x, y)) {
                ImageIO.write(gold, "png", new File("gold.png"));
                ImageIO.write(snapshot, "png", new File("bi.png"));
                throw new RuntimeException("Test failed.");
            }
        }
    }
}
 

@Test
public void testCompatibleFonts() {
    String s = "\u23EF";
    Font[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
    System.out.println("Total fonts: \t" + fonts.length);
    int count = 0;
    for (Font font : fonts) {
        if (font.canDisplayUpTo(s) < 0) {
            count++;
            System.out.println(font.getName());
        }
    }
    System.out.println("Compatible fonts: \t" + count);
}