Java GraphicsEnvironment類代碼示例

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
    DisplayChangeVITest test = new DisplayChangeVITest();
    GraphicsDevice gd =
        GraphicsEnvironment.getLocalGraphicsEnvironment().
            getDefaultScreenDevice();
    if (gd.isFullScreenSupported()) {
        gd.setFullScreenWindow(test);
        Thread t = new Thread(test);
        t.run();
        synchronized (lock) {
            while (!done) {
                try {
                    lock.wait(50);
                } catch (InterruptedException ex) {
                    ex.printStackTrace();
                }
            }
        }
        System.err.println("Test Passed.");
    } else {
        System.err.println("Full screen not supported. Test passed.");
    }
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
public boolean isAccelerated() {
    // Note that when img.getAccelerationPriority() gets set to 0
    // we remove SurfaceDataProxy objects from the cache and the
    // answer will be false.
    GraphicsConfiguration tmpGc = gc;
    if (tmpGc == null) {
        tmpGc = GraphicsEnvironment.getLocalGraphicsEnvironment().
            getDefaultScreenDevice().getDefaultConfiguration();
    }
    if (tmpGc instanceof ProxiedGraphicsConfig) {
        Object proxyKey =
            ((ProxiedGraphicsConfig) tmpGc).getProxyKey();
        if (proxyKey != null) {
            SurfaceDataProxy sdp =
                (SurfaceDataProxy) getCacheData(proxyKey);
            return (sdp != null && sdp.isAccelerated());
        }
    }
    return false;
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
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;
    }
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
public static void main(String[] args) {
    int depth = GraphicsEnvironment.getLocalGraphicsEnvironment().
        getDefaultScreenDevice().getDefaultConfiguration().
            getColorModel().getPixelSize();
    if (depth < 16) {
        System.out.println("Test PASSED (depth < 16bit)");
        return;
    }

    latch = new CountDownLatch(1);
    RenderingToCachedGraphicsTest t1 = new RenderingToCachedGraphicsTest();
    t1.pack();
    t1.setSize(300, 300);
    t1.setVisible(true);

    try { latch.await(); } catch (InterruptedException ex) {}
    t1.dispose();

    if (failed) {
        throw new
            RuntimeException("Failed: rendering didn't show up");
    }
    System.out.println("Test PASSED");
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
@Override
public Image createImageOfTab(int index) {
    TabData td = displayer.getModel().getTab(index);
    
    JLabel lbl = new JLabel(td.getText());
    int width = lbl.getFontMetrics(lbl.getFont()).stringWidth(td.getText());
    int height = lbl.getFontMetrics(lbl.getFont()).getHeight();
    width = width + td.getIcon().getIconWidth() + 6;
    height = Math.max(height, td.getIcon().getIconHeight()) + 5;
    
    GraphicsConfiguration config = GraphicsEnvironment.getLocalGraphicsEnvironment()
                                    .getDefaultScreenDevice().getDefaultConfiguration();
    
    BufferedImage image = config.createCompatibleImage(width, height);
    Graphics2D g = image.createGraphics();
    g.setColor(lbl.getForeground());
    g.setFont(lbl.getFont());
    td.getIcon().paintIcon(lbl, g, 0, 0);
    g.drawString(td.getText(), 18, height / 2);
    
    
    return image;
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
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");
    }
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
public void setVisible(boolean visible) {
    if (owner == null) {
        final GraphicsDevice screen = GraphicsEnvironment.
                getLocalGraphicsEnvironment().
                getScreenDevices()[0];
        final GraphicsConfiguration config = screen.getDefaultConfiguration();
        
        final int screenWidth  = config.getBounds().width;
        final int screenHeight = config.getBounds().height;
        
        setLocation(
                (screenWidth - getSize().width) / 2,
                (screenHeight - getSize().height) / 2);
    } else {
        setLocation(
                owner.getLocation().x + DIALOG_FRAME_WIDTH_DELTA,
                owner.getLocation().y + DIALOG_FRAME_WIDTH_DELTA);
    }
    
    super.setVisible(visible);
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
/**
 * Returns the screen coordinates for the monitor that contains the
 * specified point.  This is useful for setups with multiple monitors,
 * to ensure that popup windows are positioned properly.
 *
 * @param x The x-coordinate, in screen coordinates.
 * @param y The y-coordinate, in screen coordinates.
 * @return The bounds of the monitor that contains the specified point.
 */
public static Rectangle getScreenBoundsForPoint(int x, int y) {
	GraphicsEnvironment env = GraphicsEnvironment.
									getLocalGraphicsEnvironment();
	GraphicsDevice[] devices = env.getScreenDevices();
	for (int i=0; i<devices.length; i++) {
		GraphicsConfiguration[] configs = devices[i].getConfigurations();
		for (int j=0; j<configs.length; j++) {
			Rectangle gcBounds = configs[j].getBounds();
			if (gcBounds.contains(x, y)) {
				return gcBounds;
			}
		}
	}
	// If point is outside all monitors, default to default monitor (?)
	return env.getMaximumWindowBounds();
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
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)");
        }
    }
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
/**
 * Initializes the fonts for this application.
 */
private static void initFonts() {
	final String extension = ".ttf";
	GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();

	try {
		ge.registerFont(Font.createFont(Font.TRUETYPE_FONT,
				new File(FONT_FILE_PATH + CAVIAR_FONT_NAME.replace(" ", "") + extension)));

	} catch (FontFormatException | IOException e) {
		logger.logError("An error occured while trying to register the font: " + CAVIAR_FONT_NAME + extension);

	}
	NAME_FONT = new Font(CAVIAR_FONT_NAME, Font.BOLD, 18);
	SMALL_NAME_FONT = new Font(CAVIAR_FONT_NAME, Font.PLAIN, 15);
	STATS_FONT = new Font(CAVIAR_FONT_NAME, Font.PLAIN, 18);
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
/** Activates or deactivates Drag support on asociated JTree
* component
* @param active true if the support should be active, false
* otherwise
*/
public void activate(boolean active) {
    if (this.active == active) {
        return;
    }

    this.active = active;
    if (GraphicsEnvironment.isHeadless()) {
        return;
    }
    getDropTarget().setActive(active);
    //we want to support drop into scroll pane's free area and treat it as 'root node drop'
    if( null == outerDropTarget ) {
        outerDropTarget = new DropTarget(view.getViewport(), view.getAllowedDropActions(), this, false);
    }
    outerDropTarget.setActive(active);
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
    GraphicsDevice[] sds = GraphicsEnvironment.getLocalGraphicsEnvironment()
                                              .getScreenDevices();
    for (final GraphicsDevice gd : sds) {
        fail = true;
        Robot robot = new Robot(gd);
        robot.setAutoDelay(100);
        robot.setAutoWaitForIdle(true);

        Frame frame = new Frame(gd.getDefaultConfiguration());
        frame.setUndecorated(true);
        frame.setSize(400, 400);
        frame.setVisible(true);
        robot.waitForIdle();

        frame.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                System.out.println("e = " + e);
                fail = false;
            }
        });

        Rectangle bounds = frame.getBounds();
        robot.mouseMove(bounds.x + bounds.width / 2,
                        bounds.y + bounds.height / 2);
        robot.mousePress(MouseEvent.BUTTON1_DOWN_MASK);
        robot.mouseRelease(MouseEvent.BUTTON1_DOWN_MASK);
        frame.dispose();
        if (fail) {
            System.err.println("Frame bounds = " + bounds);
            throw new RuntimeException("Click in the wrong location");
        }
    }
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
private static void testHeadful() {
    GraphicsEnvironment ge
            = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsConfiguration gc
            = ge.getDefaultScreenDevice().getDefaultConfiguration();
    Dimension gcSize = gc.getBounds().getSize();
    ColorModel gcCM = gc.getColorModel();

    Dimension toolkitSize = Toolkit.getDefaultToolkit().getScreenSize();
    ColorModel toolkitCM = Toolkit.getDefaultToolkit().getColorModel();

    if (!gcSize.equals(toolkitSize)) {
        System.err.println("Toolkit size = " + toolkitSize);
        System.err.println("GraphicsConfiguration size = " + gcSize);
        throw new RuntimeException("Incorrect size");
    }
    if (!gcCM.equals(toolkitCM)) {
        System.err.println("Toolkit color model = " + toolkitCM);
        System.err.println("GraphicsConfiguration color model = " + gcCM);
        throw new RuntimeException("Incorrect color model");
    }
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
/**
 * Xinerama-aware version of XlibWrapper.RootWindow method.
 */
public static long getRootWindow(int screenNumber)
{
    XToolkit.awtLock();
    try
    {
        X11GraphicsEnvironment x11ge = (X11GraphicsEnvironment)
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        if (x11ge.runningXinerama())
        {
            // all the Xinerama windows share the same root window
            return XlibWrapper.RootWindow(XToolkit.getDisplay(), 0);
        }
        else
        {
            return XlibWrapper.RootWindow(XToolkit.getDisplay(), screenNumber);
        }
    }
    finally
    {
        XToolkit.awtUnlock();
    }
}
 

import java.awt.GraphicsEnvironment; //導入依賴的package包/類
/**
 * 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;
}