Example usage for java.awt Graphics dispose

Introduction

In this page you can find the example usage for java.awt Graphics dispose.

Prototype

public abstract void dispose();

Source Link

Document

Disposes of this graphics context and releases any system resources that it is using.

Usage

From source file:Main.java

/**
 * Smoothly scales the given {@link BufferedImage} to the given width and height using the
 * {@link Image#SCALE_SMOOTH} algorithm (generally bicubic resampling or bilinear filtering).
 *
 * @param source The source image./*from ww w  .j av  a2s  .  c o m*/
 * @param width  The destination width to scale to.
 * @param height The destination height to scale to.
 * @return A new, scaled image.
 */
public static BufferedImage scaledImage(BufferedImage source, int width, int height) {
    Image scaledImage = source.getScaledInstance(width, height, Image.SCALE_SMOOTH);
    BufferedImage scaledBufImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics g = scaledBufImage.createGraphics();
    g.drawImage(scaledImage, 0, 0, null);
    g.dispose();
    return scaledBufImage;
}

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From source file:Main.java

/**
 * Quickly crops an image from its source.
 * @param src The source image./*www .j av  a 2  s  .co m*/
 * @param x The x coordinate to start at.
 * @param y The y coordinate to start at.
 * @param width The width to clip.
 * @param height The height to clip.
 * @return
 */
public static BufferedImage imgUtilFastCrop(BufferedImage src, int x, int y, int width, int height) {
    if (src == null)
        return null;
    if (x == 0 && y == 0 && width == src.getWidth() && height == src.getHeight())
        return imgUtilFastCopy(src);
    else {
        BufferedImage b = new BufferedImage(width, height, src.getType());
        Graphics g = b.getGraphics();
        g.drawImage(src, -x, -y, null);
        g.dispose();
        return b;
    }
}

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From source file:Utils.java

/**
 * Produces a resized image that is of the given dimensions
 *
 * @param image The original image//from   ww w  .java2s . co m
 * @param width The desired width
 * @param height The desired height
 * @return The new BufferedImage
 */
public static BufferedImage scaledImage(BufferedImage image, int width, int height) {
    BufferedImage newImage = createCompatibleImage(width, height);
    Graphics graphics = newImage.createGraphics();

    graphics.drawImage(image, 0, 0, width, height, null);

    graphics.dispose();
    return newImage;
}

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From source file:Main.java

/**
 * Creates (in a rather clumsy way) the font metrics for a given {@link Font}.
 * /*ww w  . j  a v a 2s  .  co m*/
 * @param aFont
 *          the font instance to create the font metrics for, cannot be
 *          <code>null</code>.
 * @return a font metrics, never <code>null</code>.
 */
private static FontMetrics createFontMetrics(final Font aFont) {
    BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
    Graphics canvas = img.getGraphics();

    try {
        return canvas.getFontMetrics(aFont);
    } finally {
        canvas.dispose();
        canvas = null;
        img = null;
    }
}

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From source file:Main.java

/**
 * Create a custom cursor out of the specified image, with the specified hotspot.
 *//* w  w w.  j  a  v  a2  s  . c om*/
public static Cursor createImageCursor(Image img, Point hotspot) {
    Toolkit tk = Toolkit.getDefaultToolkit();

    // for now, just report the cursor restrictions, then blindly create
    int w = img.getWidth(null);
    int h = img.getHeight(null);
    Dimension d = tk.getBestCursorSize(w, h);
    //         int colors = tk.getMaximumCursorColors();
    //         Log.debug("Creating custom cursor [desiredSize=" + w + "x" + h +
    //                   ", bestSize=" + d.width + "x" + d.height +
    //                   ", maxcolors=" + colors + "].");

    // if the passed-in image is smaller, pad it with transparent pixels and use it anyway.
    if (((w < d.width) && (h <= d.height)) || ((w <= d.width) && (h < d.height))) {
        Image padder = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()
                .getDefaultConfiguration().createCompatibleImage(d.width, d.height, Transparency.BITMASK);
        Graphics g = padder.getGraphics();
        g.drawImage(img, 0, 0, null);
        g.dispose();

        // and reassign the image to the padded image
        img = padder;

        // and adjust the 'best' to cheat the hotspot checking code
        d.width = w;
        d.height = h;
    }

    // make sure the hotspot is valid
    if (hotspot == null) {
        hotspot = new Point(d.width / 2, d.height / 2);
    } else {
        hotspot.x = Math.min(d.width - 1, Math.max(0, hotspot.x));
        hotspot.y = Math.min(d.height - 1, Math.max(0, hotspot.y));
    }

    // and create the cursor
    return tk.createCustomCursor(img, hotspot, "samskivertDnDCursor");
}

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From source file:edu.gmu.cs.sim.util.media.PDFEncoder.java

public static void generatePDF(Component component, File file) {
    int width = component.getWidth();
    int height = component.getHeight();
    try {// w w  w .ja  v a  2  s . c  om
        Document document = new Document(new com.lowagie.text.Rectangle(width, height));
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file));
        document.addAuthor("MASON");
        document.open();
        PdfContentByte cb = writer.getDirectContent();
        PdfTemplate tp = cb.createTemplate(width, height);
        Graphics g2 = tp.createGraphics(width, height, new DefaultFontMapper());
        component.paint(g2);
        g2.dispose();
        cb.addTemplate(tp, 0, 0);
        document.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:ImageClip.java

/**
 * Clips the input image to the specified shape
 * // ww w  . j  a v  a2s  .  co  m
 * @param image
 *           the input image
 * @param clipVerts
 *           list of x, y pairs defining the clip shape, normalised
 *           to image dimensions (think texture coordinates)
 * @return The smallest image containing those pixels that fall
 *         inside the clip shape
 */
public static BufferedImage clip(BufferedImage image, float... clipVerts) {
    assert clipVerts.length >= 6;
    assert clipVerts.length % 2 == 0;

    int[] xp = new int[clipVerts.length / 2];
    int[] yp = new int[xp.length];

    int minX = image.getWidth(), minY = image.getHeight(), maxX = 0, maxY = 0;

    for (int j = 0; j < xp.length; j++) {
        xp[j] = Math.round(clipVerts[2 * j] * image.getWidth());
        yp[j] = Math.round(clipVerts[2 * j + 1] * image.getHeight());

        minX = Math.min(minX, xp[j]);
        minY = Math.min(minY, yp[j]);
        maxX = Math.max(maxX, xp[j]);
        maxY = Math.max(maxY, yp[j]);
    }

    for (int i = 0; i < xp.length; i++) {
        xp[i] -= minX;
        yp[i] -= minY;
    }

    Polygon clip = new Polygon(xp, yp, xp.length);
    BufferedImage out = new BufferedImage(maxX - minX, maxY - minY, image.getType());
    Graphics g = out.getGraphics();
    g.setClip(clip);

    g.drawImage(image, -minX, -minY, null);
    g.dispose();

    return out;
}

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From source file:com.uksf.mf.core.utility.loaders.ImageLoad.java

/**
 * Changes colour of all non-transparent pixels for given image to given colour
 * @param image - image to change colours in
 * @param newColour colour to change to/* w  ww  .  j  a  v  a  2 s . co  m*/
 * @return image with changed colours
 */
private static ImageIcon changeImageColour(ImageIcon image, int newColour) {
    LogHandler.logSeverity(INFO, "Converting image: " + image + " colour to: " + newColour);
    BufferedImage bufferedImage = new BufferedImage(image.getIconWidth(), image.getIconHeight(),
            BufferedImage.TYPE_INT_ARGB);
    Graphics graphics = bufferedImage.createGraphics();
    image.paintIcon(null, graphics, 0, 0);
    graphics.dispose();
    for (int x = 0; x < bufferedImage.getWidth(); x++) {
        for (int y = 0; y < bufferedImage.getHeight(); y++) {
            int colour = bufferedImage.getRGB(x, y);
            colour = (((colour >> 24) & 0xff) << 24) | (((colour & 0x00ff0000) >> 16) << 16)
                    | (((colour & 0x0000ff00) >> 8) << 8) | (colour & 0x000000ff);
            if (colour != COLOUR_TRANSPARENT.getRGB()) {
                newColour = (((colour >> 24) & 0xff) << 24) | (((newColour & 0x00ff0000) >> 16) << 16)
                        | (((newColour & 0x0000ff00) >> 8) << 8) | (newColour & 0x000000ff);
                bufferedImage.setRGB(x, y, newColour);
            }
        }
    }
    return new ImageIcon(bufferedImage);
}

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From source file:Utils.java

/** 
 * Renders a component into an image, which is useful for playing with the component's 
 * resultant image in special effects or transitions
 *
 * @param component The component to render
 * @return A buffered image with the rendered component. 
 *//* w  w  w . j  a v a2  s.c o m*/
public static BufferedImage renderComponentToImage(JComponent component) {
    //Create the image
    BufferedImage image = createCompatibleImage(component.getWidth(), component.getHeight());

    //Render the component onto the image
    Graphics graphics = image.createGraphics();
    //      component.update(graphics);
    component.paint(graphics);
    graphics.dispose();
    return image;
}

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From source file:de.laures.cewolf.util.ImageHelper.java

public static BufferedImage loadBufferedImage(String fileName) {
    Image image = loadImage(fileName);
    if (image instanceof BufferedImage) {
        return (BufferedImage) image;
    }//ww w .j  a v  a  2s .  com
    /*        final boolean hasAlpha = hasAlpha(image);
    int transparency = Transparency.OPAQUE;
    if (hasAlpha) {
    transparency = Transparency.BITMASK;
    }*/
    int width = (int) Math.max(1.0, image.getWidth(null));
    int height = (int) Math.max(1.0, image.getHeight(null));
    // BufferedImage bimage = GRAPHICS_CONV.createCompatibleImage(width, height, transparency);
    BufferedImage bimage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    final Graphics g = bimage.createGraphics();
    g.drawImage(image, 0, 0, null);
    g.dispose();
    return bimage;
}

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