Examples of java.awt.GraphicsEnvironment

java.awt.GraphicsEnvironment
The GraphicsEnvironment class describes the collection of {@link GraphicsDevice} objects and {@link java.awt.Font} objectsavailable to a Java(tm) application on a particular platform. The resources in this GraphicsEnvironment might be local or on a remote machine. GraphicsDevice objects can be screens, printers or image buffers and are the destination of {@link Graphics2D} drawing methods. Each GraphicsDevicehas a number of {@link GraphicsConfiguration} objects associated withit. These objects specify the different configurations in which the GraphicsDevice can be used. @see GraphicsDevice @see GraphicsConfiguration @version 1.68, 02/13/07

  public static final Icon createExpandIcon() {
      int size = 8;
      int xOffSet = 0;
      int yOffSet = 0;
    try {
      GraphicsEnvironment environment =
        GraphicsEnvironment.getLocalGraphicsEnvironment();
        BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
      Graphics2D g2D =
        environment.createGraphics(
          image);
        g2D.setBackground(new Color(0,0,0,0));
        g2D.clearRect(0,0,size,size);
        g2D.setStroke(new BasicStroke(1.5f));
        g2D.setRenderingHint(

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  public static final Icon createCollapseIcon() {
      int size = 8;
      int xOffSet = 0;
      int yOffSet = 0;
    try {
      GraphicsEnvironment environment =
        GraphicsEnvironment.getLocalGraphicsEnvironment();
        BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
      Graphics2D g2D =
        environment.createGraphics(
          image);
        g2D.setBackground(new Color(0,0,0,0));
        g2D.clearRect(0,0,size,size);
        g2D.setStroke(new BasicStroke(1.5f));
        g2D.setRenderingHint(

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                                       (Dialog)owner);
        }
        Rectangle dlgBounds = dialog.getBounds();


        // get union of all GC bounds
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice[] gs = ge.getScreenDevices();
        for (int j=0; j<gs.length; j++) {
            gcBounds =
                gcBounds.union(gs[j].getDefaultConfiguration().getBounds());
        }

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        }
        Point position = getLocationOnScreen();
        Toolkit toolkit = Toolkit.getDefaultToolkit();
        GraphicsConfiguration gc = getGraphicsConfiguration();
        Rectangle screenBounds = new Rectangle(toolkit.getScreenSize());
        GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice[] gd = ge.getScreenDevices();
        for(int i = 0; i < gd.length; i++) {
            if(gd[i].getType() == GraphicsDevice.TYPE_RASTER_SCREEN) {
                GraphicsConfiguration dgc =
                    gd[i].getDefaultConfiguration();
                if(dgc.getBounds().contains(position)) {

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               (Dialog)owner);
  }
  Rectangle dlgBounds = dialog.getBounds();


  // get union of all GC bounds
  GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
  GraphicsDevice[] gs = ge.getScreenDevices();
  for (int j=0; j<gs.length; j++) {
            gcBounds =
                gcBounds.union(gs[j].getDefaultConfiguration().getBounds());
  }

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  }
  Point position = getLocationOnScreen();
        Toolkit toolkit = Toolkit.getDefaultToolkit();
        GraphicsConfiguration gc = getGraphicsConfiguration();
        Rectangle screenBounds = new Rectangle(toolkit.getScreenSize());
        GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice[] gd = ge.getScreenDevices();
        for(int i = 0; i < gd.length; i++) {
            if(gd[i].getType() == GraphicsDevice.TYPE_RASTER_SCREEN) {
                GraphicsConfiguration dgc =
                    gd[i].getDefaultConfiguration();
                if(dgc.getBounds().contains(position)) {

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     *
     * @return the newly created buffered image.
     */
    protected static BufferedImage createBufferedImage(int width, int height, boolean hasAlpha) {
        BufferedImage       bimage = null;
        GraphicsEnvironment ge     = GraphicsEnvironment.getLocalGraphicsEnvironment();


        try {


            // Determine the type of transparency of the new buffered image
            int transparency = Transparency.OPAQUE;


            if (hasAlpha) {
                transparency = Transparency.TRANSLUCENT;
            }


            // Create the buffered image
            GraphicsDevice        gs = ge.getDefaultScreenDevice();
            GraphicsConfiguration gc = gs.getDefaultConfiguration();


            bimage = gc.createCompatibleImage(width, height, transparency);
        } catch (HeadlessException e) {
            // The system does not have a screen

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        boolean hasAlpha = hasAlpha(image);


        // Create a buffered image with a format that's compatible with the
        // screen
        BufferedImage       bimage = null;
        GraphicsEnvironment ge     = GraphicsEnvironment.getLocalGraphicsEnvironment();


        try {


            // Determine the type of transparency of the new buffered image
            int transparency = Transparency.OPAQUE;


            if (hasAlpha) {
                transparency = Transparency.BITMASK;
            }


            // Create the buffered image
            GraphicsDevice        gs = ge.getDefaultScreenDevice();
            GraphicsConfiguration gc = gs.getDefaultConfiguration();


            bimage = gc.createCompatibleImage(image.getWidth(null), image.getHeight(null), transparency);
        } catch (HeadlessException e) {
            // The system does not have a screen

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    {
      b = owner.getBounds();
    }
    else if( b == null )
    {
      GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
      b = ge.getDefaultScreenDevice().getDefaultConfiguration().getBounds();
    }


    dialog.setLocation( ( int )( ( b.getWidth() - sz.getWidth() ) / 2 ) + ( int )b.getX(),
        ( int )( ( b.getHeight() - sz.getHeight() ) / 2 ) + ( int )b.getY() );
  }

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    private static int getScreenWidth() {
        return getScreenSize().width;
    }


    private static void maximizeFrame(JFrame frame) {
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        frame.setLocation(0, 0);
        frame.setMaximizedBounds(env.getMaximumWindowBounds());
        frame.setExtendedState(frame.getExtendedState() | JFrame.MAXIMIZED_BOTH);
    }

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