Java JTable Screenshot createTableScreenshot(Component component)

Description

create Table Screenshot

License

Open Source License

Declaration

private static BufferedImage createTableScreenshot(Component component) 

Method Source Code

//package com.java2s;
/*/*  w w w  . j  av  a 2s. c  o m*/
 Copyright 2008-2010 Gephi
 Authors : Mathieu Bastian <mathieu.bastian@gephi.org>
 Website : http://www.gephi.org

 This file is part of Gephi.

 DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 Copyright 2011 Gephi Consortium. All rights reserved.

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 General Public License Version 3 only ("GPL") or the Common
 Development and Distribution License("CDDL") (collectively, the
 "License"). You may not use this file except in compliance with the
 License. You can obtain a copy of the License at
 http://gephi.org/about/legal/license-notice/
 or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the
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 Contributor(s):

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 */

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;

import java.awt.image.BufferedImage;

import javax.swing.JTable;

import javax.swing.JViewport;
import javax.swing.SwingUtilities;

import javax.swing.table.JTableHeader;

public class Main {
    private static BufferedImage createTableScreenshot(Component component) {
        Component source;
        Dimension sourceSize;
        JTable table;

        if (component instanceof JTable) {
            table = (JTable) component;

            if ((table.getTableHeader() == null)
                    || !table.getTableHeader().isVisible()) {
                return createGeneralComponentScreenshot(component);
            }

            source = table;
            sourceSize = table.getSize();
        } else if (component instanceof JViewport
                && ((JViewport) component).getView() instanceof JTable) {
            JViewport viewport = (JViewport) component;
            table = (JTable) viewport.getView();

            if ((table.getTableHeader() == null)
                    || !table.getTableHeader().isVisible()) {
                return createGeneralComponentScreenshot(component);
            }

            if (table.getSize().height > viewport.getSize().height) {
                source = viewport;
                sourceSize = viewport.getSize();
            } else {
                source = table;
                sourceSize = table.getSize();
            }
        } else {
            throw new IllegalArgumentException(
                    "Component can only be JTable or JViewport holding JTable"); // NOI18N
        }

        final JTableHeader tableHeader = table.getTableHeader();
        Dimension tableHeaderSize = tableHeader.getSize();

        BufferedImage tableScreenshot = new BufferedImage(sourceSize.width,
                tableHeaderSize.height + sourceSize.height,
                BufferedImage.TYPE_INT_RGB);
        final Graphics tableScreenshotGraphics = tableScreenshot
                .getGraphics();

        // Component.printAll has to run in AWT Thread to print component contents correctly
        if (SwingUtilities.isEventDispatchThread()) {
            tableHeader.printAll(tableScreenshotGraphics);
        } else {
            try {
                SwingUtilities.invokeAndWait(new Runnable() {

                    @Override
                    public void run() {
                        tableHeader.printAll(tableScreenshotGraphics);
                    }
                });
            } catch (Exception e) {
            }
        }

        tableScreenshotGraphics.translate(0, tableHeaderSize.height);

        final Component printSrc = source;

        // Component.printAll has to run in AWT Thread to print component contents correctly
        if (SwingUtilities.isEventDispatchThread()) {
            printSrc.printAll(tableScreenshotGraphics);
        } else {
            try {
                SwingUtilities.invokeAndWait(new Runnable() {

                    @Override
                    public void run() {
                        printSrc.printAll(tableScreenshotGraphics);
                    }
                });
            } catch (Exception e) {
            }
        }

        return tableScreenshot;
    }

    private static BufferedImage createGeneralComponentScreenshot(
            Component component) {
        Component source;
        Dimension sourceSize;

        if (component instanceof JViewport) {
            JViewport viewport = (JViewport) component;
            Component contents = viewport.getView();

            if (contents.getSize().height > viewport.getSize().height) {
                source = component;
                sourceSize = component.getSize();
            } else {
                source = contents;
                sourceSize = contents.getSize();
            }
        } else {
            source = component;
            sourceSize = component.getSize();
        }

        BufferedImage componentScreenshot = new BufferedImage(
                sourceSize.width, sourceSize.height,
                BufferedImage.TYPE_INT_RGB);
        Graphics componentScreenshotGraphics = componentScreenshot
                .getGraphics();
        source.printAll(componentScreenshotGraphics);

        return componentScreenshot;
    }
}

Related

1. createTableScreenshot(Component component)
2. createTableScreenshot(Component component)