Example usage for javax.swing JViewport paint

Introduction

In this page you can find the example usage for javax.swing JViewport paint.

Prototype

public void paint(Graphics g) 

Source Link

Document

Depending on whether the backingStore is enabled, either paint the image through the backing store or paint just the recently exposed part, using the backing store to "blit" the remainder.

Usage

From source file:com.att.aro.diagnostics.GraphPanel.java

/**
 * Returns buffered image of current viewport in provided JScrollPane.
 * // w ww . j a v a  2  s .co  m
 * @param pane
 * @return Graph image.
 */
private BufferedImage createImage(JScrollPane pane) {
    JViewport jVPort = pane.getViewport();
    jVPort.getWidth();
    int w = jVPort.getWidth();
    int h = jVPort.getHeight();
    BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
    Graphics2D g = bi.createGraphics();
    jVPort.paint(g);
    return bi;
}

---

From source file:com.att.aro.ui.model.diagnostic.GraphPanelHelper.java

public void SaveImageAs(JViewport pane, String graphPanelSaveDirectory) {

    JFileChooser fc = new JFileChooser(graphPanelSaveDirectory);

    // Set up file types
    String[] fileTypesJPG = new String[2];
    String fileDisplayTypeJPG = ResourceBundleHelper.getMessageString("fileChooser.contentDisplayType.jpeg");
    fileTypesJPG[0] = ResourceBundleHelper.getMessageString("fileChooser.contentType.jpeg");
    fileTypesJPG[1] = ResourceBundleHelper.getMessageString("fileChooser.contentType.jpg");
    FileFilter filterJPG = new ExtensionFileFilter(fileDisplayTypeJPG, fileTypesJPG);

    fc.addChoosableFileFilter(fc.getAcceptAllFileFilter());
    String[] fileTypesPng = new String[1];
    String fileDisplayTypePng = ResourceBundleHelper.getMessageString("fileChooser.contentDisplayType.png");
    fileTypesPng[0] = ResourceBundleHelper.getMessageString("fileChooser.contentType.png");
    FileFilter filterPng = new ExtensionFileFilter(fileDisplayTypePng, fileTypesPng);
    fc.addChoosableFileFilter(filterPng);
    fc.setFileFilter(filterJPG);/*from  ww  w  . j av a2s.  com*/
    File plotImageFile = null;

    boolean bSavedOrCancelled = false;
    while (!bSavedOrCancelled) {
        if (fc.showSaveDialog(pane) == JFileChooser.APPROVE_OPTION) {
            String strFile = fc.getSelectedFile().toString();
            String strFileLowerCase = strFile.toLowerCase();
            String fileDesc = fc.getFileFilter().getDescription();
            String fileType = ResourceBundleHelper.getMessageString("fileChooser.contentType.jpg");
            if ((fileDesc.equalsIgnoreCase(
                    ResourceBundleHelper.getMessageString("fileChooser.contentDisplayType.png"))
                    || strFileLowerCase.endsWith(ResourceBundleHelper.getMessageString("fileType.filters.dot")
                            + fileTypesPng[0].toLowerCase()))) {
                fileType = fileTypesPng[0];
            }
            if (strFile.length() > 0) {
                // Save current directory
                graphPanelSaveDirectory = fc.getCurrentDirectory().getPath();

                if ((fileType != null) && (fileType.length() > 0)) {
                    String fileTypeLowerCaseWithDot = ResourceBundleHelper
                            .getMessageString("fileType.filters.dot") + fileType.toLowerCase();
                    if (!strFileLowerCase.endsWith(fileTypeLowerCaseWithDot)) {
                        strFile += ResourceBundleHelper.getMessageString("fileType.filters.dot") + fileType;
                    }
                }
                plotImageFile = new File(strFile);
                boolean bAttemptToWriteToFile = true;
                if (plotImageFile.exists()) {
                    if (MessageDialogFactory.showConfirmDialog(pane,
                            MessageFormat.format(
                                    ResourceBundleHelper.getMessageString("fileChooser.fileExists"),
                                    plotImageFile.getAbsolutePath()),
                            ResourceBundleHelper.getMessageString("fileChooser.confirm"),
                            JOptionPane.YES_NO_OPTION) != JOptionPane.YES_OPTION) {
                        bAttemptToWriteToFile = false;
                    }
                }
                if (bAttemptToWriteToFile) {
                    try {
                        if (fileType != null && fileType.equalsIgnoreCase(fileTypesPng[0])) {
                            BufferedImage bufImage = ImageHelper.createImage(pane.getBounds().width,
                                    pane.getBounds().height);
                            Graphics2D g = bufImage.createGraphics();
                            pane.paint(g);
                            ImageIO.write(bufImage, "png", plotImageFile);
                        } else {
                            BufferedImage bufImage = ImageHelper.createImage(pane.getBounds().width,
                                    pane.getBounds().height);
                            Graphics2D g = bufImage.createGraphics();
                            pane.paint(g);
                            ImageIO.write(bufImage, "jpg", plotImageFile);
                        }
                        bSavedOrCancelled = true;
                    } catch (IOException e) {
                        MessageDialogFactory.showMessageDialog(pane, ResourceBundleHelper
                                .getMessageString("fileChooser.errorWritingToFile" + plotImageFile.toString()));
                    }
                }
            }
        } else {
            bSavedOrCancelled = true;
        }
    }
}

---