Example usage for java.awt Image getGraphics

Introduction

In this page you can find the example usage for java.awt Image getGraphics.

Prototype

public abstract Graphics getGraphics();

Source Link

Document

Creates a graphics context for drawing to an off-screen image.

Usage

From source file:Main.java

/**
 * Create a custom cursor out of the specified image, with the specified hotspot.
 *///from  w  w w . j  a v a  2s  .  co  m
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:RGBGrayFilter.java

/**
 * Returns an icon with a disabled appearance. This method is used
 * to generate a disabled icon when one has not been specified.
 *
 * @param component the component that will display the icon, may be null.
 * @param icon the icon to generate disabled icon from.
 * @return disabled icon, or null if a suitable icon can not be generated.
 *///from  w w w.j  av  a  2 s .  c o m
public static Icon getDisabledIcon(JComponent component, Icon icon) {
    if ((icon == null) || (component == null) || (icon.getIconWidth() == 0) || (icon.getIconHeight() == 0)) {
        return null;
    }
    Image img;
    if (icon instanceof ImageIcon) {
        img = ((ImageIcon) icon).getImage();
    } else {
        img = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_ARGB);
        icon.paintIcon(component, img.getGraphics(), 0, 0);
    }

    ImageProducer producer = new FilteredImageSource(img.getSource(), new RGBGrayFilter());

    return new ImageIcon(component.createImage(producer));
}

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

public static final void yellowHighlight(Image image, Collection<Rectangle> boxes, float outsetFactor) {
    if (CollectionUtils.isEmpty(boxes))
        return;//w w  w  .  j  av  a 2  s.c o m
    Graphics2D g2d = (Graphics2D) image.getGraphics();
    g2d.setPaint(Color.YELLOW);
    Composite originalComposite = g2d.getComposite();
    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f);
    g2d.setComposite(ac);
    for (Rectangle box : boxes) {
        if (outsetFactor != 1.0F) {
            box = new Rectangle(box);
            box.grow((int) (box.getHeight() * outsetFactor), (int) (box.getWidth() * outsetFactor));
        }
        g2d.fill(box);
    }
    g2d.setComposite(originalComposite);
}

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From source file:no.geosoft.cc.io.GifEncoder.java

/**
 * Write AWT/Swing component to GIF file.
 * //from  w  ww  .  ja  v a2 s.c  o m
 * @param image  Image to write.
 * @param file   File to erite to.
 */
public static void writeFile(Component component, File file) throws AWTException, IOException {
    Image image = component.createImage(component.getWidth(), component.getHeight());
    Graphics graphics = image.getGraphics();
    component.printAll(graphics);

    GifEncoder.writeFile(image, file);
}

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From source file:SysTray.java

private Image getImage() throws HeadlessException {
    Icon defaultIcon = MetalIconFactory.getTreeHardDriveIcon();
    Image img = new BufferedImage(defaultIcon.getIconWidth(), defaultIcon.getIconHeight(),
            BufferedImage.TYPE_4BYTE_ABGR);
    defaultIcon.paintIcon(new Panel(), img.getGraphics(), 0, 0);
    return img;// w  ww .  j  a  v  a  2s.  c o  m
}

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From source file:ColorSource.java

public void dragGestureRecognized(DragGestureEvent e) {
    // Create an image we can drag along with us.
    // Not all systems support this, but it doesn't hurt to try.
    Image colorblock = this.createImage(25, 25);
    Graphics g = colorblock.getGraphics();
    g.setColor(color);//from w  w  w .j ava  2 s. c o  m
    g.fillRect(0, 0, 25, 25);

    // Start dragging our transferable color object.
    e.startDrag(DragSource.DefaultMoveDrop, // The initial drag cursor
            colorblock, new Point(0, 0), // The image to drag
            tcolor, // The data being dragged
            this); // Who to notify during drag
}

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From source file:net.sf.dynamicreports.jasper.builder.JasperConcatenatedReportBuilder.java

public JasperConcatenatedReportBuilder toPng(OutputStream outputStream, float zoom) throws DRException {
    Validate.notNull(outputStream, "outputStream must not be null");
    Validate.isTrue(zoom > 0, "zoom must be > 0");

    int maxWidth = 0;
    int maxHeight = 0;

    for (JasperPrint jasperPrint : jasperReportHandler.getPrintList()) {
        int pages = jasperPrint.getPages().size();
        int pageWidth = (int) (jasperPrint.getPageWidth() * zoom);
        maxWidth += pageWidth * pages + (pages - 1) + 2;
        int height = (int) (jasperPrint.getPageHeight() * zoom) + 2;
        if (height > maxHeight) {
            maxHeight = height;/*from w  w w .ja va2  s.c o m*/
        }
    }

    Image pageImage = new BufferedImage(maxWidth, maxHeight, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = (Graphics2D) pageImage.getGraphics();
    g2d.setColor(Color.LIGHT_GRAY);
    g2d.fill(new Rectangle2D.Float(1, 1, maxWidth - 1, maxHeight - 1));

    int offset = 1;
    for (JasperPrint jasperPrint : jasperReportHandler.getPrintList()) {
        int pageWidth = (int) (jasperPrint.getPageWidth() * zoom);
        for (int i = 0; i < jasperPrint.getPages().size(); i++) {
            try {
                JRGraphics2DExporter exporter = new JRGraphics2DExporter();
                exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
                exporter.setParameter(JRGraphics2DExporterParameter.GRAPHICS_2D, pageImage.getGraphics());
                exporter.setParameter(JRGraphics2DExporterParameter.OFFSET_X, offset);
                exporter.setParameter(JRGraphics2DExporterParameter.OFFSET_Y, 1);
                exporter.setParameter(JRExporterParameter.PAGE_INDEX, new Integer(i));
                exporter.setParameter(JRGraphics2DExporterParameter.ZOOM_RATIO, new Float(zoom));
                exporter.exportReport();
                offset += pageWidth + 1;
            } catch (JRException e) {
                throw new DRException(e);
            }
        }
    }
    try {
        ImageIO.write((RenderedImage) pageImage, "png", outputStream);
    } catch (IOException e) {
        throw new DRException(e);
    }
    return this;
}

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From source file:net.bioclipse.model.ScatterPlotMouseHandler.java

@Override
public void mouseDragged(MouseEvent e) {
    super.mouseDragged(e);

    ChartPanel chartPanel = getChartPanel(e);
    JFreeChart selectedChart = chartPanel.getChart();
    ChartDescriptor cd = ChartUtils.getChartDescriptor(selectedChart);
    int[] indices = cd.getSourceIndices();

    XYPlot plot = (XYPlot) chartPanel.getChart().getPlot();

    //Create double buffer
    Image buffer = chartPanel.createImage(chartPanel.getWidth(), chartPanel.getHeight());
    Graphics bufferGraphics = buffer.getGraphics();
    chartPanel.paint(bufferGraphics);/*from   w w  w  .  ja  v a 2s . c  o  m*/

    if (lastX == 0 && lastY == 0) {
        lastX = e.getX();
        lastY = e.getY();
    }

    drawRect = new Rectangle();
    int x1 = Math.min(Math.min(e.getX(), lastX), startX);
    int y1 = Math.min(Math.min(e.getY(), lastY), startY);
    int x2 = Math.max(Math.max(e.getX(), lastX), startX);
    int y2 = Math.max(Math.max(e.getY(), lastY), startY);

    drawRect.x = x1;
    drawRect.y = y1;
    drawRect.width = x2 - drawRect.x;
    drawRect.height = y2 - drawRect.y;

    //Create a clipping rectangle
    Rectangle clipRect = new Rectangle(drawRect.x - 100, drawRect.y - 100, drawRect.width + 200,
            drawRect.height + 200);

    //Check for selected points
    for (int j = 0; j < plot.getDataset().getItemCount(plot.getDataset().getSeriesCount() - 1); j++) {
        for (int i = 0; i < plot.getDataset().getSeriesCount(); i++) {
            Number xK = plot.getDataset().getX(i, j);
            Number yK = plot.getDataset().getY(i, j);
            Point2D datasetPoint2D = new Point2D.Double(domainValueTo2D(chartPanel, plot, xK.doubleValue()),
                    rangeValueTo2D(chartPanel, plot, yK.doubleValue()));

            if (drawRect.contains(datasetPoint2D)) {
                PlotPointData cp = new PlotPointData(indices[j], cd.getXLabel(), cd.getYLabel());
                boolean pointAdded = mouseDragSelection.addPoint(cp);
                if (pointAdded) {
                    ((ScatterPlotRenderer) plot.getRenderer()).addMarkedPoint(j, i);
                    selectedChart.plotChanged(new PlotChangeEvent(plot));
                }
            } else if (!mouseDragSelection.isEmpty()) {
                PlotPointData cp = new PlotPointData(indices[j], cd.getXLabel(), cd.getYLabel());
                boolean pointRemoved = mouseDragSelection.removePoint(cp);
                if (pointRemoved) {
                    ((ScatterPlotRenderer) plot.getRenderer()).removeMarkedPoint(new Point(j, i));
                    selectedChart.plotChanged(new PlotChangeEvent(plot));
                }
            }
        }
    }

    Iterator<PlotPointData> iterator = currentSelection.iterator();
    while (iterator.hasNext()) {
        PlotPointData next = iterator.next();
        Point dataPoint = next.getDataPoint();
        ((ScatterPlotRenderer) plot.getRenderer()).addMarkedPoint(dataPoint);
    }

    lastX = e.getX();
    lastY = e.getY();

    Graphics graphics = chartPanel.getGraphics();
    graphics.setClip(clipRect);

    //Draw selection rectangle
    bufferGraphics.drawRect(drawRect.x, drawRect.y, drawRect.width, drawRect.height);

    graphics.drawImage(buffer, 0, 0, chartPanel.getWidth(), chartPanel.getHeight(), null);
}

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From source file:com.floreantpos.jasperreport.engine.print.JRPrinterAWT.java

/**
 *
 *//*from  ww  w .j  a  v a 2  s. co m*/
private Image printPageToImage(int pageIndex, float zoom) throws JRException {
    Image pageImage = new BufferedImage((int) (jasperPrint.getPageWidth() * zoom) + 1,
            (int) (jasperPrint.getPageHeight() * zoom) + 1, BufferedImage.TYPE_INT_RGB);

    JRGraphics2DExporter exporter = new JRGraphics2DExporter();
    exporter.setParameter(JRExporterParameter.JASPER_PRINT, this.jasperPrint);
    exporter.setParameter(JRGraphics2DExporterParameter.GRAPHICS_2D, pageImage.getGraphics());
    exporter.setParameter(JRExporterParameter.PAGE_INDEX, new Integer(pageIndex));
    exporter.setParameter(JRGraphics2DExporterParameter.ZOOM_RATIO, new Float(zoom));
    exporter.exportReport();

    return pageImage;
}

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From source file:com.openbravo.pos.util.JRPrinterAWT411.java

/**
 *
 *///  w  w  w .j  av a 2s.c  om
private Image printPageToImage(int pageIndex, float zoom) throws JRException {
    Image pageImage = new BufferedImage((int) (jasperPrint.getPageWidth() * zoom) + 1,
            (int) (jasperPrint.getPageHeight() * zoom) + 1, BufferedImage.TYPE_INT_RGB);

    JRGraphics2DExporter exporter = new JRGraphics2DExporter();
    exporter.setParameter(JRExporterParameter.JASPER_PRINT, this.jasperPrint);
    exporter.setParameter(JRGraphics2DExporterParameter.GRAPHICS_2D, pageImage.getGraphics());
    exporter.setParameter(JRExporterParameter.PAGE_INDEX, Integer.valueOf(pageIndex));
    exporter.setParameter(JRGraphics2DExporterParameter.ZOOM_RATIO, new Float(zoom));
    exporter.exportReport();

    return pageImage;
}

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