Example usage for java.awt Graphics2D setRenderingHint

Introduction

In this page you can find the example usage for java.awt Graphics2D setRenderingHint.

Prototype

public abstract void setRenderingHint(Key hintKey, Object hintValue);

Source Link

Document

Sets the value of a single preference for the rendering algorithms.

Usage

From source file:com.taunova.app.libview.components.ImageHelpers.java

public static Image getScaledImage(BufferedImage image, int width) {
    Dimension d = getScaledDimension(image, width);
    Image scaledImage = image.getScaledInstance(d.width, d.height, Image.SCALE_SMOOTH);

    BufferedImage resizedImage = null;

    final boolean OPTIMIZE_SCALE = true;

    if (OPTIMIZE_SCALE) {
        ResampleOp resampleOp = new ResampleOp(100, 200);
        resampleOp.setUnsharpenMask(AdvancedResizeOp.UnsharpenMask.Normal);
        resizedImage = resampleOp.filter(image, null);
    } else {// www  .  j  a  v a2  s .  c o m
        resizedImage = new BufferedImage(d.width, d.height, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = resizedImage.createGraphics();
        g.setComposite(AlphaComposite.Src);
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g.drawImage(scaledImage, 0, 0, d.width, d.height, null);
        g.dispose();
    }

    return resizedImage;
}

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From source file:eu.planets_project.tb.impl.data.util.ImageThumbnail.java

/**
 * Create a scaled jpeg of an image. The width/height ratio is preserved.
 * /*from w  w  w .  ja v a  2  s .com*/
 * <p>
 * If image is smaller than thumbWidth x thumbHeight, it will be magnified,
 * otherwise it will be scaled down.
 * </p>
 * 
 * @param image
 *            the image to reduce
 * @param thumbWidth
 *            the maximum width of the thumbnail
 * @param thumbHeight
 *            the maximum heigth of the thumbnail
 * @param quality
 *            the jpeg quality ot the thumbnail
 * @param out
 *            a stream where the thumbnail data is written to
 */
public static void createThumb(Image image, int thumbWidth, int thumbHeight, OutputStream out)
        throws Exception {
    int imageWidth = image.getWidth(null);
    int imageHeight = image.getHeight(null);
    double thumbRatio = (double) thumbWidth / (double) thumbHeight;
    double imageRatio = (double) imageWidth / (double) imageHeight;
    if (thumbRatio < imageRatio) {
        thumbHeight = (int) (thumbWidth / imageRatio);
    } else {
        thumbWidth = (int) (thumbHeight * imageRatio);
    }
    // draw original image to thumbnail image object and
    // scale it to the new size on-the-fly
    BufferedImage thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_ARGB);
    Graphics2D graphics2D = thumbImage.createGraphics();
    graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
    graphics2D.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
            RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
    graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);
    // save thumbnail image to out stream
    log.debug("Start writing rescaled image...");
    ImageIO.write(thumbImage, "png", out);
    log.debug("DONE writing rescaled image...");
}

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From source file:de.bamamoto.mactools.png2icns.Scaler.java

public static BufferedImage resize(BufferedImage source, int width, int height) {

    double xScale = ((double) width) / (double) source.getWidth();
    double yScale = ((double) height) / (double) source.getHeight();
    BufferedImage result = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()
            .getDefaultConfiguration()//from  www  .  j a  va  2  s  .  c  o m
            .createCompatibleImage(width, height, source.getColorModel().getTransparency());
    Graphics2D newImage = null;
    try {
        newImage = result.createGraphics();
        newImage.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        newImage.drawRenderedImage(source, AffineTransform.getScaleInstance(xScale, yScale));
    } finally {
        if (newImage != null) {
            newImage.dispose();
        }
    }
    return result;
}

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From source file:Utils.java

/** 
 * Renders a paragraph of text (line breaks ignored) to an image (created and returned). 
 *
 * @param font The font to use/*  w w w  .  j  av a 2 s.  c o m*/
 * @param textColor The color of the text
 * @param text The message
 * @param width The width the text should be limited to
 * @return An image with the text rendered into it
 */
public static BufferedImage renderTextToImage(Font font, Color textColor, String text, int width) {
    Hashtable map = new Hashtable();
    map.put(TextAttribute.FONT, font);
    AttributedString attributedString = new AttributedString(text, map);
    AttributedCharacterIterator paragraph = attributedString.getIterator();

    FontRenderContext frc = new FontRenderContext(null, false, false);
    int paragraphStart = paragraph.getBeginIndex();
    int paragraphEnd = paragraph.getEndIndex();
    LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(paragraph, frc);

    float drawPosY = 0;

    //First time around, just determine the height
    while (lineMeasurer.getPosition() < paragraphEnd) {
        TextLayout layout = lineMeasurer.nextLayout(width);

        // Move it down
        drawPosY += layout.getAscent() + layout.getDescent() + layout.getLeading();
    }

    BufferedImage image = createCompatibleImage(width, (int) drawPosY);
    Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

    drawPosY = 0;
    lineMeasurer.setPosition(paragraphStart);
    while (lineMeasurer.getPosition() < paragraphEnd) {
        TextLayout layout = lineMeasurer.nextLayout(width);

        // Move y-coordinate by the ascent of the layout.
        drawPosY += layout.getAscent();

        /* Compute pen x position.  If the paragraph is
           right-to-left, we want to align the TextLayouts
           to the right edge of the panel.
         */
        float drawPosX;
        if (layout.isLeftToRight()) {
            drawPosX = 0;
        } else {
            drawPosX = width - layout.getAdvance();
        }

        // Draw the TextLayout at (drawPosX, drawPosY).
        layout.draw(graphics, drawPosX, drawPosY);

        // Move y-coordinate in preparation for next layout.
        drawPosY += layout.getDescent() + layout.getLeading();
    }

    graphics.dispose();
    return image;
}

---

From source file:net.mindengine.oculus.frontend.web.controllers.project.ProjectEditController.java

private static BufferedImage resize(BufferedImage image, int width, int height) {
    BufferedImage resizedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = resizedImage.createGraphics();
    g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);

    g.drawImage(image, 0, 0, width, height, null);
    g.dispose();//from w  ww .  j av a  2 s  .c  om
    return resizedImage;
}

---

From source file:com.igormaznitsa.jhexed.renders.svg.SVGImage.java

private static void processAntialias(final boolean flag, final Graphics2D g) {
    if (flag) {//from   ww w. j  a  va  2  s  .  com
        g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
                RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
    } else {
        g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
        g.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
                RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);
    }
}

---

From source file:org.apache.stratos.theme.mgt.ui.processors.AddThemeResourceProcessor.java

private static DataHandler scaleImage(DataHandler dataHandler, int height, int width) throws IOException {

    Image image = ImageIO.read(new BufferedInputStream(dataHandler.getInputStream()));
    // Check if the image has transparent pixels
    boolean hasAlpha = ((BufferedImage) image).getColorModel().hasAlpha();

    // Maintain Aspect ratio
    int thumbHeight = height;
    int thumbWidth = width;
    double thumbRatio = (double) width / (double) height;
    double imageRatio = (double) image.getWidth(null) / (double) image.getHeight(null);
    if (thumbRatio < imageRatio) {
        thumbHeight = (int) (thumbWidth / imageRatio);
    } else {//from w w  w.  j a v  a  2s  .c o m
        thumbWidth = (int) (thumbHeight * imageRatio);
    }

    BufferedImage thumb;
    // Check if transparent pixels are available and set the color mode accordingly 
    if (hasAlpha) {
        thumb = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_ARGB);
    } else {
        thumb = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB);
    }
    Graphics2D graphics2D = thumb.createGraphics();
    graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
    graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);

    // Save the image as PNG so that transparent images are rendered as intended
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    ImageIO.write(thumb, "PNG", output);

    DataSource dataSource = new ByteArrayDataSource(output.toByteArray(), "application/octet-stream");
    return new DataHandler(dataSource);
}

---

From source file:com.jaeksoft.searchlib.util.ImageUtils.java

public final static BufferedImage reduceImage(BufferedImage image, int width, int height) {
    int type = (image.getTransparency() == Transparency.OPAQUE) ? BufferedImage.TYPE_INT_RGB
            : BufferedImage.TYPE_INT_ARGB;
    BufferedImage ret = (BufferedImage) image;
    int w = image.getWidth();
    int h = image.getHeight();

    while (w != width || h != height) {
        if (w > width) {
            w /= 2;//w w  w.  j ava2 s .c o m
            if (w < width)
                w = width;
        }

        if (h > height) {
            h /= 2;
            if (h < height)
                h = height;
        }

        BufferedImage tmp = new BufferedImage(w, h, type);

        Graphics2D g2 = tmp.createGraphics();
        g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g2.drawImage(ret, 0, 0, w, h, null);
        g2.dispose();
        ret = tmp;
    }
    return ret;
}

---

From source file:net.sourceforge.subsonic.controller.CoverArtController.java

public static BufferedImage scale(BufferedImage image, int width, int height) {
    int w = image.getWidth();
    int h = image.getHeight();
    BufferedImage thumb = image;//from w  w  w  .  j a v a 2 s. c  o m

    // For optimal results, use step by step bilinear resampling - halfing the size at each step.
    do {
        w /= 2;
        h /= 2;
        if (w < width) {
            w = width;
        }
        if (h < height) {
            h = height;
        }

        BufferedImage temp = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = temp.createGraphics();
        g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g2.drawImage(thumb, 0, 0, temp.getWidth(), temp.getHeight(), null);
        g2.dispose();

        thumb = temp;
    } while (w != width);

    return thumb;
}

---

From source file:Main.java

/**
 * Fills a gradient using the start color and end color specified.
 *
 * @param g/*w w  w.  j  av  a  2 s  . co m*/
 *          the gradient
 * @param s
 *          the shape to fill
 * @param start
 *          the start color
 * @param end
 *          the end color
 * @param vertical
 *          true for a vertical gradient; false for horizontal
 */
public static void fillGradient(Graphics2D g, Shape s, Color start, Color end, boolean vertical) {
    Rectangle r = s.getBounds();
    Paint gp = new GradientPaint(0, 0, start, vertical ? 0 : r.width, vertical ? r.height : 0, end);
    Object o = g.getRenderingHint(RenderingHints.KEY_ANTIALIASING);

    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g.setPaint(gp);
    g.fill(s);
    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, o);
}

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