Example usage for java.awt Graphics2D drawImage

Introduction

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

Prototype

public abstract void drawImage(BufferedImage img, BufferedImageOp op, int x, int y);

Source Link

Document

Renders a BufferedImage that is filtered with a BufferedImageOp .

Usage

From source file:org.jax.maanova.plot.MaanovaChartPanel.java

/**
 * {@inheritDoc}/*from w ww.  java 2  s .  com*/
 */
@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);

    Graphics2D g2 = (Graphics2D) g;
    if (this.chartImage != null) {
        if (this.chartImage.getWidth() == this.getWidth() && this.chartImage.getHeight() == this.getHeight()) {
            g2.drawImage(this.chartImage, 0, 0, this);
        } else {
            g2.drawImage(this.chartImage, 0, 0, this.getWidth(), this.getHeight(), this.getBackground(), this);
        }
    }

    if (this.dragRectangle != null) {
        this.renderDragRectangle(g2);
    }
}

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From source file:com.funambol.foundation.util.MediaUtils.java

/**
 * Rotates given buffered image by given amount of degree.
 * The valid degree values are 0, 90, 180, 270.
 * If the image is a jpg, the rotation is lossless, exif data are preserved
 * and image size is almost the same.//from  w ww . ja  va 2 s  .com
 *
 * @param bufImage the buffered image
 * @param degree amount of degree to apply
 * @return a buffered image containing rotated image data
 * @throws PicturesException if amount of degree is invalid or if an
 *         IOException occurs
 */
private static BufferedImage rotateImage(BufferedImage bufImage, int degree)
        throws FileDataObjecyUtilsException {

    degree = degree % 360;
    int h;
    int w;

    switch (degree) {
    case 0:
    case 180:
        h = bufImage.getHeight();
        w = bufImage.getWidth();
        break;
    case 90:
    case 270:
        h = bufImage.getWidth();
        w = bufImage.getHeight();
        break;
    default:
        throw new FileDataObjecyUtilsException(
                "Error rotating image since the '" + degree + "' degree value is unsupported");
    }

    BufferedImage out = null;

    int bufImageType = bufImage.getType();
    if (BufferedImage.TYPE_BYTE_INDEXED == bufImageType || BufferedImage.TYPE_BYTE_BINARY == bufImageType) {

        IndexColorModel model = (IndexColorModel) bufImage.getColorModel();
        out = new BufferedImage(w, h, bufImage.getType(), model);

    } else if (BufferedImage.TYPE_CUSTOM == bufImageType) {

        // we don't know what type of image it can be

        // there's a bug in some VM that cause some PNG images to have 
        // type custom: this should take care of this issue

        //check if we need to have alpha channel
        boolean alpha = bufImage.getTransparency() != BufferedImage.OPAQUE;

        if (alpha) {
            // TYPE_INT_ARGB_PRE gives you smaller output images
            // than TYPE_INT_ARGB
            out = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
        } else {
            out = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        }

    } else {

        out = new BufferedImage(w, h, bufImage.getType());
    }

    Graphics2D g2d = out.createGraphics();

    Map renderingHints = new HashMap();

    renderingHints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);

    g2d.setRenderingHints(renderingHints);
    g2d.rotate(Math.toRadians(degree));

    switch (degree) {
    case 90:
        g2d.translate(0, -w);
        break;
    case 180:
        g2d.translate(-w, -h);
        break;
    case 270:
        g2d.translate(-h, 0);
        break;
    }

    g2d.drawImage(bufImage, null, 0, 0);
    g2d.dispose();

    return out;
}

---

From source file:CompositeEffects.java

/** Draw the example */
public void paint(Graphics g1) {
    Graphics2D g = (Graphics2D) g1;

    // fill the background
    g.setPaint(new Color(175, 175, 175));
    g.fillRect(0, 0, getWidth(), getHeight());

    // Set text attributes
    g.setColor(Color.black);//w  ww. j ava 2 s  .c o m
    g.setFont(new Font("SansSerif", Font.BOLD, 12));

    // Draw the unmodified image
    g.translate(10, 10);
    g.drawImage(cover, 0, 0, this);
    g.drawString("SRC_OVER", 0, COVERHEIGHT + 15);

    // Draw the cover again, using AlphaComposite to make the opaque
    // colors of the image 50% translucent
    g.translate(COVERWIDTH + 10, 0);
    g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));
    g.drawImage(cover, 0, 0, this);

    // Restore the pre-defined default Composite for the screen, so
    // opaque colors stay opaque.
    g.setComposite(AlphaComposite.SrcOver);
    // Label the effect
    g.drawString("SRC_OVER, 50%", 0, COVERHEIGHT + 15);

    // Now get an offscreen image to work with. In order to achieve
    // certain compositing effects, the drawing surface must support
    // transparency. Onscreen drawing surfaces cannot, so we have to do the
    // compositing in an offscreen image that is specially created to have
    // an "alpha channel", then copy the final result to the screen.
    BufferedImage offscreen = new BufferedImage(COVERWIDTH, COVERHEIGHT, BufferedImage.TYPE_INT_ARGB);

    // First, fill the image with a color gradient background that varies
    // left-to-right from opaque to transparent yellow
    Graphics2D osg = offscreen.createGraphics();
    osg.setPaint(new GradientPaint(0, 0, Color.yellow, COVERWIDTH, 0, new Color(255, 255, 0, 0)));
    osg.fillRect(0, 0, COVERWIDTH, COVERHEIGHT);

    // Now copy the cover image on top of this, but use the DstOver rule
    // which draws it "underneath" the existing pixels, and allows the
    // image to show depending on the transparency of those pixels.
    osg.setComposite(AlphaComposite.DstOver);
    osg.drawImage(cover, 0, 0, this);

    // And display this composited image on the screen. Note that the
    // image is opaque and that none of the screen background shows through
    g.translate(COVERWIDTH + 10, 0);
    g.drawImage(offscreen, 0, 0, this);
    g.drawString("DST_OVER", 0, COVERHEIGHT + 15);

    // Now start over and do a new effect with the off-screen image.
    // First, fill the offscreen image with a new color gradient. We
    // don't care about the colors themselves; we just want the
    // translucency of the background to vary. We use opaque black to
    // transparent black. Note that since we've already used this offscreen
    // image, we set the composite to Src, we can fill the image and
    // ignore anything that is already there.
    osg.setComposite(AlphaComposite.Src);
    osg.setPaint(new GradientPaint(0, 0, Color.black, COVERWIDTH, COVERHEIGHT, new Color(0, 0, 0, 0)));
    osg.fillRect(0, 0, COVERWIDTH, COVERHEIGHT);

    // Now set the compositing type to SrcIn, so colors come from the
    // source, but translucency comes from the destination
    osg.setComposite(AlphaComposite.SrcIn);

    // Draw our loaded image into the off-screen image, compositing it.
    osg.drawImage(cover, 0, 0, this);

    // And then copy our off-screen image to the screen. Note that the
    // image is translucent and some of the image shows through.
    g.translate(COVERWIDTH + 10, 0);
    g.drawImage(offscreen, 0, 0, this);
    g.drawString("SRC_IN", 0, COVERHEIGHT + 15);

    // If we do the same thing but use SrcOut, then the resulting image
    // will have the inverted translucency values of the destination
    osg.setComposite(AlphaComposite.Src);
    osg.setPaint(new GradientPaint(0, 0, Color.black, COVERWIDTH, COVERHEIGHT, new Color(0, 0, 0, 0)));
    osg.fillRect(0, 0, COVERWIDTH, COVERHEIGHT);
    osg.setComposite(AlphaComposite.SrcOut);
    osg.drawImage(cover, 0, 0, this);
    g.translate(COVERWIDTH + 10, 0);
    g.drawImage(offscreen, 0, 0, this);
    g.drawString("SRC_OUT", 0, COVERHEIGHT + 15);

    // Here's a cool effect; it has nothing to do with compositing, but
    // uses an arbitrary shape to clip the image. It uses Area to combine
    // shapes into more complicated ones.
    g.translate(COVERWIDTH + 10, 0);
    Shape savedClip = g.getClip(); // Save current clipping region
    // Create a shape to use as the new clipping region.
    // Begin with an ellipse
    Area clip = new Area(new Ellipse2D.Float(0, 0, COVERWIDTH, COVERHEIGHT));
    // Intersect with a rectangle, truncating the ellipse.
    clip.intersect(new Area(new Rectangle(5, 5, COVERWIDTH - 10, COVERHEIGHT - 10)));
    // Then subtract an ellipse from the bottom of the truncated ellipse.
    clip.subtract(new Area(new Ellipse2D.Float(COVERWIDTH / 2 - 40, COVERHEIGHT - 20, 80, 40)));
    // Use the resulting shape as the new clipping region
    g.clip(clip);
    // Then draw the image through this clipping region
    g.drawImage(cover, 0, 0, this);
    // Restore the old clipping region so we can label the effect
    g.setClip(savedClip);
    g.drawString("Clipping", 0, COVERHEIGHT + 15);
}

---

From source file:CompositeTest.java

public void paintComponent(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;

    BufferedImage image = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
    Graphics2D gImage = image.createGraphics();
    gImage.setPaint(Color.red);/*from   www  .  ja  va  2  s.  c om*/
    gImage.fill(shape1);
    AlphaComposite composite = AlphaComposite.getInstance(rule, alpha);
    gImage.setComposite(composite);
    gImage.setPaint(Color.blue);
    gImage.fill(shape2);
    g2.drawImage(image, null, 0, 0);
}

---

From source file:c.depthchart.ViewerPanel.java

public void paintComponent(Graphics g)
// Draw the depth image and statistics info
{
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D) g;

    // convert image pixel array into an image
    DataBufferByte dataBuffer = new DataBufferByte(imgbytes, imWidth * imHeight);
    Raster raster = Raster.createPackedRaster(dataBuffer, imWidth, imHeight, 8, null);
    image.setData(raster);/*from   ww w  . j ava 2s. com*/
    if (image != null)
        g2.drawImage(image, 0, 0, this);

    writeStats(g2);
}

---

From source file:org.objectweb.proactive.extensions.timitspmd.util.charts.MatrixChart.java

private void buildFinalChart(String title, String subTitle, String filename, String xAxisLabel,
        String yAxisLabel, int width, int height) {
    this.buildMainChart(title, subTitle, xAxisLabel, yAxisLabel, filename);

    this.buildLegendChart(5);

    BufferedImage mainChartImage = this.mainChart.createBufferedImage(width, height);
    BufferedImage legendChartImage = this.legendChart.createBufferedImage(width / 6, height / 3);
    BufferedImage info = null;/*from w ww  .j  a  v a  2 s.co  m*/
    try {
        info = ImageIO.read(MatrixChart.logoFile);
    } catch (IOException ex) {
    }

    BufferedImage total = new BufferedImage(width + (width / 6), height, BufferedImage.TYPE_INT_RGB);
    Graphics2D g = total.createGraphics();

    g.drawImage(mainChartImage, 0, 0, null);
    g.drawImage(legendChartImage, width, height / 4, null);
    g.setPaint(Color.WHITE);
    g.fillRect(width, 0, width, height / 4);
    g.fillRect(width, (height / 4) + (height / 3), width, height);
    if (info != null) {
        // g.drawImage(info, (width+(width/6))-info.getWidth(),10, null); //
        // up-right
        g.drawImage(info, (width + (width / 6)) - info.getWidth(), height - info.getHeight(), null); // down-right
    }
    g.dispose();

    try {
        javax.imageio.ImageIO.write(total, "png", XMLHelper.createFileWithDirs(filename));
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:org.geomajas.plugin.rasterizing.layer.RasterDirectLayer.java

private BufferedImage makeOpaque(BufferedImage image) {
    if (image.getType() == BufferedImage.TYPE_CUSTOM) {
        log.warn("makeOpaque {} Unknown Image Type 0: ", getTitle());
        return image;
    }// w ww  .j a  v  a 2  s . co  m
    BufferedImage opaqueCopy = new BufferedImage(image.getWidth(), image.getHeight(), image.getType());
    Graphics2D g1 = opaqueCopy.createGraphics();
    g1.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getOpacity()));
    g1.drawImage(image, null, 0, 0);
    g1.dispose();
    return opaqueCopy;
}

---

From source file:edu.stanford.epad.epadws.handlers.dicom.DSOUtil.java

private static BufferedImage imageToBufferedImage(Image image) {
    BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null),
            BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2 = bufferedImage.createGraphics();
    g2.drawImage(image, 0, 0, null);
    g2.dispose();//from  w  w  w . j  a  v  a 2 s .c om
    return bufferedImage;
}

---

From source file:PSDReader.java

/**
 * Gets the image contents of frame n. Note that this expands the image to the
 * full frame size (if the layer was smaller) and any subsequent use of
 * getLayer() will return the full image.
 * //from  w  w w  .  j  a  v  a2s  .com
 * @return BufferedImage representation of frame, or null if n is invalid.
 */
public BufferedImage getFrame(int n) {
    BufferedImage im = null;
    if ((n >= 0) && (n < nLayers)) {
        im = frames[n];
        LayerInfo info = layers[n];
        if ((info.w != width) || (info.h != height)) {
            BufferedImage temp = new BufferedImage(width, height, ImageType);
            Graphics2D gc = temp.createGraphics();
            gc.drawImage(im, info.x, info.y, null);
            gc.dispose();
            im = temp;
            frames[n] = im;
        }
    }
    return im;
}

---

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