Java Code Examples for java.awt.Image#getGraphics()

private static void draw(Shape clip, Shape shape, Image from, Image to) {
    Graphics2D g2d = (Graphics2D) to.getGraphics();
    g2d.setXORMode(Color.BLACK);
    g2d.setClip(clip);
    Rectangle toBounds = shape.getBounds();
    g2d.drawImage(from, toBounds.x, toBounds.y, toBounds.width,
                  toBounds.height, null);
    g2d.dispose();
}
 

private static long test(Image bi, Image vi, AffineTransform atfm) {
    final Polygon p = new Polygon();
    p.addPoint(0, 0);
    p.addPoint(SIZE, 0);
    p.addPoint(0, SIZE);
    p.addPoint(SIZE, SIZE);
    p.addPoint(0, 0);
    Graphics2D g2d = (Graphics2D) vi.getGraphics();
    g2d.clip(p);
    g2d.transform(atfm);
    g2d.setComposite(AlphaComposite.SrcOver);
    final long start = System.nanoTime();
    g2d.drawImage(bi, 0, 0, null);
    final long time = System.nanoTime() - start;
    g2d.dispose();
    return time;
}
 

static void initImage(GraphicsConfiguration gc, Image image) {
    Graphics g = image.getGraphics();
    g.setColor(Color.RED);
    int w = image.getWidth(null);
    int h = image.getHeight(null);
    g.fillRect(0, 0, w, h);
    g.dispose();

    // need to 'accelerate' the image
    if (dstImage == null) {
        dstImage =
            gc.createCompatibleVolatileImage(TESTW, TESTH,
                                             Transparency.OPAQUE);
    }
    dstImage.validate(gc);
    g = dstImage.getGraphics();
    g.drawImage(image, 0, 0, null);
    g.drawImage(image, 0, 0, null);
    g.drawImage(image, 0, 0, null);
}
 

private static long test(Image bi, Image vi, AffineTransform atfm) {
    final Polygon p = new Polygon();
    p.addPoint(0, 0);
    p.addPoint(SIZE, 0);
    p.addPoint(0, SIZE);
    p.addPoint(SIZE, SIZE);
    p.addPoint(0, 0);
    Graphics2D g2d = (Graphics2D) vi.getGraphics();
    g2d.clip(p);
    g2d.transform(atfm);
    g2d.setComposite(AlphaComposite.SrcOver);
    final long start = System.nanoTime();
    g2d.drawImage(bi, 0, 0, null);
    final long time = System.nanoTime() - start;
    g2d.dispose();
    return time;
}
 

/**
 * Updates the window associated with the painter.
 *
 * @param repaint indicates if the window should be completely repainted
 * to the back buffer using {@link java.awt.Window#paintAll} before update.
 */
public void updateWindow(boolean repaint) {
    boolean done = false;
    Image bb = getBackBuffer(repaint);
    while (!done) {
        if (repaint) {
            Graphics2D g = (Graphics2D)bb.getGraphics();
            try {
                window.paintAll(g);
            } finally {
                g.dispose();
            }
        }

        done = update(bb);
        if (!done) {
            repaint = true;
            bb = getBackBuffer(true);
        }
    }
}
 

private void drawBGImage() {
    Dimension d = getSize();
    int w = d.width;
    int h = d.height;
    Image BGImage = createImage(w, h);
    if (BGImage == null)
        return;
    Graphics g = BGImage.getGraphics();
    g.setColor(Color.green.darker().darker());
    g.fillRect(0, 0, w, h);
    g.setColor(Color.green.darker());
    g.fillRect(w - 2, 0, 2, h);
    g.fillRect(0, h - 2, w, 2);
    g.setColor(Color.green.darker().darker().darker());
    g.fillRect(0, 0, w, 2);
    g.fillRect(0, 0, 2, h);
    g.dispose();
    bgd.setImage(BGImage);
}
 

/**
 * Updates the window associated with the painter.
 *
 * @param repaint indicates if the window should be completely repainted
 * to the back buffer using {@link java.awt.Window#paintAll} before update.
 */
public void updateWindow(boolean repaint) {
    boolean done = false;
    Image bb = getBackBuffer(repaint);
    while (!done) {
        if (repaint) {
            Graphics2D g = (Graphics2D)bb.getGraphics();
            try {
                window.paintAll(g);
            } finally {
                g.dispose();
            }
        }

        done = update(bb);
        if (!done) {
            repaint = true;
            bb = getBackBuffer(true);
        }
    }
}
 

static void initImage(GraphicsConfiguration gc, Image image) {
    Graphics g = image.getGraphics();
    g.setColor(Color.RED);
    int w = image.getWidth(null);
    int h = image.getHeight(null);
    g.fillRect(0, 0, w, h);
    g.dispose();

    // need to 'accelerate' the image
    if (dstImage == null) {
        dstImage =
            gc.createCompatibleVolatileImage(TESTW, TESTH,
                                             Transparency.OPAQUE);
    }
    dstImage.validate(gc);
    g = dstImage.getGraphics();
    g.drawImage(image, 0, 0, null);
    g.drawImage(image, 0, 0, null);
    g.drawImage(image, 0, 0, null);
}
 

protected Image getPageErrorImage()
{
	PrintPageFormat pageFormat = getPageFormat();
	Image image = new BufferedImage(
			(int) (pageFormat.getPageWidth() * realZoom) + 1,
			(int) (pageFormat.getPageHeight() * realZoom) + 1,
			BufferedImage.TYPE_INT_RGB
			);
	
	Graphics2D grx = (Graphics2D) image.getGraphics();
	AffineTransform transform = new AffineTransform();
	transform.scale(realZoom, realZoom);
	grx.transform(transform);

	drawPageError(grx);
	
	return image;
}
 

private static final Image clearImage(Image bb) {
    Graphics2D g = (Graphics2D)bb.getGraphics();
    int w = bb.getWidth(null);
    int h = bb.getHeight(null);

    g.setComposite(AlphaComposite.Src);
    g.setColor(new Color(0, 0, 0, 0));
    g.fillRect(0, 0, w, h);

    return bb;
}
 

private static void init(final Image image) {
    final Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setComposite(AlphaComposite.Src);
    graphics.setColor(new Color(0, 0, 0, 0));
    graphics.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
    graphics.dispose();
}
 

private static final Image clearImage(Image bb) {
    Graphics2D g = (Graphics2D)bb.getGraphics();
    int w = bb.getWidth(null);
    int h = bb.getHeight(null);

    g.setComposite(AlphaComposite.Src);
    g.setColor(new Color(0, 0, 0, 0));
    g.fillRect(0, 0, w, h);

    return bb;
}
 

/**
 * Fills the whole image using different alpha for each row.
 *
 * @param image to fill
 */
private static void fill(final Image image, final int size) {
    Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setComposite(AlphaComposite.Src);
    graphics.setColor(Color.GREEN);
    graphics.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
    int row = image.getHeight(null) / size;
    for (int i = 0; i < size; ++i) {
        graphics.setColor(new Color(23, 127, 189, i));
        graphics.fillRect(0, i * row, image.getWidth(null), row);
    }
    graphics.dispose();
}
 

private static void fill(final Image image) {
    final Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setComposite(AlphaComposite.Src);
    for (int i = 0; i < image.getHeight(null); ++i) {
        graphics.setColor(new Color(i, 0, 0));
        graphics.fillRect(0, i, image.getWidth(null), 1);
    }
    graphics.dispose();
}
 

private static void fill(final Image image) {
    final Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setComposite(AlphaComposite.Src);
    for (int i = 0; i < image.getHeight(null); ++i) {
        graphics.setColor(new Color(i, 0, 0));
        graphics.fillRect(0, i, image.getWidth(null), 1);
    }
    graphics.dispose();
}
 

private void drawArmorImage(Image im, int a) {
    int x = 0;
    int w = im.getWidth(null);
    int h = im.getHeight(null);
    Graphics g = im.getGraphics();
    g.setColor(Color.black);
    g.fillRect(0, 0, w, h);
    for (int i = 0; i < a; i++) {
        x = i * 7;
        g.setColor(Color.green.darker());
        g.fillRect(x, 0, 5, 12);
    }
}
 

private static void draw(final Image img) {
    float[] dashes = {10.0f, 10.0f};
    BasicStroke bs = new BasicStroke(0.0f, BasicStroke.CAP_BUTT,
                                     BasicStroke.JOIN_BEVEL, 10.0f, dashes,
                                     0.0f);
    Graphics2D g = (Graphics2D) img.getGraphics();
    g.setColor(Color.WHITE);
    g.fillRect(0, 0, 200, 40);
    Line2D line = new Line2D.Double(20, 20, 180, 20);
    g.setColor(Color.BLACK);
    g.setStroke(bs);
    g.draw(line);
    g.dispose();
}
 

/**
 * Create background tile when MainDesktopPane is first displayed. Recenter
 * logoLabel on MainWindow and set backgroundLabel to the size of
 * MainDesktopPane.
 * 
 * @param e the component event
 */
@Override
public void componentResized(ComponentEvent e) {
	// If displayed for the first time, create background image tile.
	// The size of the background tile cannot be determined during construction
	// since it requires the MainDesktopPane be displayed first.
	if (firstDisplay) {
		ImageIcon baseImageIcon = ImageLoader.getIcon(Msg.getString("img.background")); //$NON-NLS-1$
		Dimension screen_size = Toolkit.getDefaultToolkit().getScreenSize();
		Image backgroundImage = createImage((int) screen_size.getWidth(), (int) screen_size.getHeight());
		Graphics backgroundGraphics = backgroundImage.getGraphics();

		for (int x = 0; x < backgroundImage.getWidth(this); x += baseImageIcon.getIconWidth()) {
			for (int y = 0; y < backgroundImage.getHeight(this); y += baseImageIcon.getIconHeight()) {
				backgroundGraphics.drawImage(baseImageIcon.getImage(), x, y, this);
			}
		}

		backgroundImageIcon.setImage(backgroundImage);

		backgroundLabel.setSize(getSize());

		firstDisplay = false;
	}

	// Set the backgroundLabel size to the size of the desktop
	backgroundLabel.setSize(getSize());

}
 

private static void fill(final Image image) {
    final Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setComposite(AlphaComposite.Src);
    for (int i = 0; i < image.getHeight(null); ++i) {
        graphics.setColor(new Color(i, 0, 0));
        graphics.fillRect(0, i, image.getWidth(null), 1);
    }
    graphics.dispose();
}
 

private void render(Image im, int type, String s) {
    Graphics2D g2d = (Graphics2D) im.getGraphics();
    clear(g2d, type, im.getWidth(null), im.getHeight(null));
    g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
            RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
    Font f = new Font("Dialog", Font.BOLD, 40);// g2d.getFont().deriveFont(32.0f);
    g2d.setColor(Color.white);
    g2d.setFont(g2d.getFont().deriveFont(36.0f));
    g2d.drawString(s, 10, im.getHeight(null) / 2);
}