Example usage for java.awt Graphics2D dispose

Introduction

In this page you can find the example usage for java.awt Graphics2D 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:ddf.catalog.transformer.input.tika.TikaInputTransformer.java

private void createThumbnail(InputStream input, Metacard metacard) {
    try {/*from w  w  w  .  java  2 s. c o m*/
        Image image = ImageIO.read(new CloseShieldInputStream(input));

        if (null != image) {
            BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null),
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D graphics = bufferedImage.createGraphics();
            graphics.drawImage(image, null, null);
            graphics.dispose();

            BufferedImage thumb = Scalr.resize(bufferedImage, 200);

            try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
                ImageIO.write(thumb, "jpeg", out);

                byte[] thumbBytes = out.toByteArray();
                metacard.setAttribute(new AttributeImpl(Metacard.THUMBNAIL, thumbBytes));
            }
        } else {
            LOGGER.warn("Unable to read image from input stream to create thumbnail.");
        }
    } catch (Exception e) {
        LOGGER.warn("Unable to read image from input stream to create thumbnail.", e);
    }
}

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From source file:GraphEditorDemo.java

/**
 * copy the visible part of the graph to a file as a jpeg image
 * @param file/*  w  w  w . j av  a  2 s. c  o  m*/
 */
public void writeJPEGImage(File file) {
    int width = vv.getWidth();
    int height = vv.getHeight();

    BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    Graphics2D graphics = bi.createGraphics();
    vv.paint(graphics);
    graphics.dispose();

    try {
        ImageIO.write(bi, "jpeg", file);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:de.fau.amos.ChartToPDF.java

/**
 * Converts Chart into PDF//from   ww w.  j a va2 s.  c  om
 * 
 * @param chart JFreeChart from CharRenderer that will be displayed in the PDF file
 * @param fileName Name of created PDF-file
 */
public void convertChart(JFreeChart chart, String fileName) {
    if (chart != null) {

        //set page size
        float width = PageSize.A4.getWidth();
        float height = PageSize.A4.getHeight();

        //creating a new pdf document
        Document document = new Document(new Rectangle(width, height));
        PdfWriter writer;
        try {
            writer = PdfWriter.getInstance(document,
                    new FileOutputStream(new File(System.getProperty("userdir.location"), fileName + ".pdf")));
        } catch (DocumentException e) {
            e.printStackTrace();
            return;
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return;
        }

        document.addAuthor("Green Energy Cockpit");
        document.open();

        PdfContentByte cb = writer.getDirectContent();
        PdfTemplate tp = cb.createTemplate(width, height);

        //sets the pdf page
        Graphics2D g2D = new PdfGraphics2D(tp, width, height);
        Rectangle2D r2D = new Rectangle2D.Double(0, 0, width, height);

        //draws the passed JFreeChart into the PDF file
        chart.draw(g2D, r2D);

        g2D.dispose();
        cb.addTemplate(tp, 0, 0);

        document.close();

        writer.flush();
        writer.close();
    }
}

---

From source file:ca.sqlpower.wabit.report.ChartRenderer.java

public boolean renderReportContent(Graphics2D g, double width, double height, double scaleFactor, int pageIndex,
        boolean printing, SPVariableResolver variablesContext) {

    if (printing) {
        // If we're printing a streaming query, we have to
        // print whatever's displayed.
        if (this.chartCache == null || (this.chartCache != null && !this.chartCache.getQuery().isStreaming())) {
            refresh(false);/* w  w  w. ja  va2  s .c  o m*/
        }
    } else if (needsRefresh || this.chartCache == null) {
        // No chart loaded. Doing a refresh will trigger a new 
        // redraw later on.
        refresh();
        return false;
    }

    JFreeChart jFreeChart = null;
    try {
        jFreeChart = ChartSwingUtil.createChartFromQuery(chartCache);
        if (jFreeChart == null) {
            g.drawString("Loading...", 0, g.getFontMetrics().getHeight());
            return false;
        }

        Rectangle2D area = new Rectangle2D.Double(0, 0, width, height);

        // first pass establishes rendering info but draws nothing
        ChartRenderingInfo info = new ChartRenderingInfo();
        Graphics2D dummyGraphics = (Graphics2D) g.create(0, 0, 0, 0);
        jFreeChart.draw(dummyGraphics, area, info);
        dummyGraphics.dispose();

        // now for real
        Rectangle2D plotArea = info.getPlotInfo().getDataArea();
        ChartGradientPainter.paintChartGradient(g, area, (int) plotArea.getMaxY());
        jFreeChart.draw(g, area);

    } catch (Exception e) {
        logger.error("Error while rendering chart", e);
        g.drawString("Could not render chart: " + e.getMessage(), 0, g.getFontMetrics().getHeight());
    }
    return false;
}

---

From source file:net.rptools.lib.image.ThumbnailManager.java

private Image createThumbnail(File file) throws IOException {
    // Gather info
    File thumbnailFile = getThumbnailFile(file);
    if (thumbnailFile.exists()) {
        return ImageUtil.getImage(thumbnailFile);
    }//from   w  w  w  . jav  a  2  s .  co  m

    Image image = ImageUtil.getImage(file);
    Dimension imgSize = new Dimension(image.getWidth(null), image.getHeight(null));

    // Test if we Should we bother making a thumbnail ?
    // Jamz: New size 100k (was 30k) and put in check so we're not creating thumbnails LARGER than the original...
    if (file.length() < 102400
            || (imgSize.width <= thumbnailSize.width && imgSize.height <= thumbnailSize.height)) {
        return image;
    }
    // Transform the image
    SwingUtil.constrainTo(imgSize, Math.min(image.getWidth(null), thumbnailSize.width),
            Math.min(image.getHeight(null), thumbnailSize.height));
    BufferedImage thumbnailImage = new BufferedImage(imgSize.width, imgSize.height,
            ImageUtil.pickBestTransparency(image));

    Graphics2D g = thumbnailImage.createGraphics();
    g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g.drawImage(image, 0, 0, imgSize.width, imgSize.height, null);
    g.dispose();

    // Use png to preserve transparency
    FileUtils.writeByteArrayToFile(thumbnailFile, ImageUtil.imageToBytes(thumbnailImage, "png"));

    return thumbnailImage;
}

---

From source file:com.t3.image.ThumbnailManager.java

private Image createThumbnail(File file) throws IOException {

    // Gather info
    File thumbnailFile = getThumbnailFile(file);
    if (thumbnailFile.exists()) {
        return ImageUtil.getImage(thumbnailFile);
    }//w  w  w.  jav  a  2 s. com

    Image image = ImageUtil.getImage(file);

    // Should we bother making a thumbnail ?
    if (file.length() < 30 * 1024) {
        return image;
    }

    // Transform the image
    Dimension imgSize = new Dimension(image.getWidth(null), image.getHeight(null));
    SwingUtil.constrainTo(imgSize, thumbnailSize.width, thumbnailSize.height);

    BufferedImage thumbnailImage = new BufferedImage(imgSize.width, imgSize.height,
            ImageUtil.pickBestTransparency(image));

    Graphics2D g = thumbnailImage.createGraphics();
    g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g.drawImage(image, 0, 0, imgSize.width, imgSize.height, null);
    g.dispose();

    // Ensure path exists
    if (thumbnailFile.exists())
        thumbnailFile.delete();
    else
        thumbnailFile.getParentFile().mkdirs();

    try (OutputStream os = new FileOutputStream(thumbnailFile)) {
        IOUtils.write(ImageUtil.imageToBytes(thumbnailImage, "png"), os);
    }

    return thumbnailImage;
}

---

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g.create();
    if (myImage != null) {
        int x = (getWidth() - myImage.getWidth()) / 2;
        int y = (getHeight() - myImage.getHeight()) / 2;
        g2d.drawImage(myImage, x, y, this);

        g2d.setColor(Color.RED);//from   ww  w.ja  va 2  s .  co m
        g2d.translate(x, y);
        g2d.draw(myOffice);
    }
    g2d.dispose();
}

---

From source file:de.chott.jfreechartsample.service.ChartService.java

/**
 * Schreibt mehrere JFreeCharts in ein PDF. Fr jedes Chart wird hierbei eine halbe PDF-Seite verwendet.
 * /*  www  .j  ava  2  s .  c o  m*/
 * @param charts
 * @return Das PDF als ByteArray
 */
private byte[] writeChartsToDocument(JFreeChart... charts) {
    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        float width = PageSize.A4.getWidth();
        float height = PageSize.A4.getHeight() / 2;
        int index = 0;

        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, baos);
        document.open();
        PdfContentByte contentByte = writer.getDirectContent();

        for (JFreeChart chart : charts) {

            PdfTemplate template = contentByte.createTemplate(width, height);
            Graphics2D graphics2D = template.createGraphics(width, height);
            Rectangle2D rectangle2D = new Rectangle2D.Double(0, 0, width, height);

            chart.draw(graphics2D, rectangle2D);

            graphics2D.dispose();
            contentByte.addTemplate(template, 0, height - (height * index));
            index++;
        }

        writer.flush();
        document.close();

        return baos.toByteArray();
    } catch (Exception ex) {
        Logger.getLogger(ChartService.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
}

---

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    Graphics2D g2d = (Graphics2D) g.create();
    g2d.setColor(getBackground());//from  w  w w.j av a  2 s . c o  m
    g2d.fillRect(0, 0, getWidth(), getHeight());
    if (image != null) {
        int x = getWidth() - image.getWidth();
        int y = getHeight() - image.getHeight();
        g2d.drawImage(image, x, y, this);
    }
    super.paintComponent(g2d);
    g2d.dispose();
}

---

From source file:org.pentaho.plugin.jfreereport.reportcharts.JFreeChartReportDrawable.java

/**
 * Returns an optional image-map for the entry.
 *
 * @param bounds the bounds for which the image map is computed.
 * @return the computed image-map or null if there is no image-map available.
 *//*from   w  ww  . java2s.c  om*/
public ImageMap getImageMap(final Rectangle2D bounds) {
    if (chartRenderingInfo == null) {
        return null;
    }
    final Rectangle2D dataArea = getDataAreaOffset();
    final Rectangle2D otherArea = new Rectangle2D.Double();

    if ((ObjectUtilities.equal(bounds, this.bounds)) == false) {
        final BufferedImage image = new BufferedImage(1, 1, BufferedImage.TYPE_4BYTE_ABGR);
        final Graphics2D graphics = image.createGraphics();
        draw(graphics, bounds);
        graphics.dispose();
    }

    final ImageMap map = new ImageMap();
    final EntityCollection entityCollection = chartRenderingInfo.getEntityCollection();
    final int count = entityCollection.getEntityCount();
    for (int i = 0; i < count; i++) {
        final ChartEntity chartEntity = entityCollection.getEntity(i);
        final Shape area = chartEntity.getArea();
        final String hrefValue = chartEntity.getURLText();
        final String tooltipValue = chartEntity.getToolTipText();
        if (StringUtils.isEmpty(tooltipValue) == false || StringUtils.isEmpty(hrefValue) == false) {
            final AbstractImageMapEntry entry;
            if (chartEntity instanceof XYItemEntity || chartEntity instanceof CategoryItemEntity
                    || chartEntity instanceof PieSectionEntity) {
                entry = createMapEntry(area, dataArea);
            } else {
                entry = createMapEntry(area, otherArea);
            }
            if (entry == null) {
                continue;
            }
            if (StringUtils.isEmpty(hrefValue) == false) {
                entry.setAttribute(LibXmlInfo.XHTML_NAMESPACE, "href", hrefValue);
            } else {
                entry.setAttribute(LibXmlInfo.XHTML_NAMESPACE, "href", "#");
            }
            if (StringUtils.isEmpty(tooltipValue) == false) {
                entry.setAttribute(LibXmlInfo.XHTML_NAMESPACE, "title", tooltipValue);
            }
            map.addMapEntry(entry);
        }
    }

    return map;
}

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