org.hipparchus.samples.ExampleUtils Maven / Gradle / Ivy
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* This is not the original file distributed by the Apache Software Foundation
* It has been modified by the Hipparchus project
*/
package org.hipparchus.samples;
import java.awt.Component;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
public class ExampleUtils {
@SuppressWarnings("serial")
public static class ExampleFrame extends JFrame {
/**
* Returns the main panel which should be printed by the screenshot action.
*
* By default, it returns the content pane of this frame, but can be overriden
* in case the frame has a global scroll pane which would cut off any offscreen content.
*
* @return the main panel to print
*/
public Component getMainPanel() {
return getContentPane();
}
}
public static void showExampleFrame(final ExampleFrame frame) {
Runnable r = new Runnable() {
public void run() {
JMenuItem screenshot = new JMenuItem("Screenshot (png)");
screenshot.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_0, InputEvent.CTRL_DOWN_MASK));
screenshot.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JFileChooser fileChooser = new JFileChooser(System.getProperty("user.dir"));
if (fileChooser.showSaveDialog(frame) == JFileChooser.APPROVE_OPTION) {
File file = fileChooser.getSelectedFile();
BufferedImage img = getScreenShot(frame.getMainPanel());
try {
// write the image as a PNG
ImageIO.write(img, "png", file);
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
JMenuItem exit = new JMenuItem("Exit");
exit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
JMenu menu = new JMenu("File");
menu.add(screenshot);
menu.add(exit);
JMenuBar mb = new JMenuBar();
mb.add(menu);
frame.setJMenuBar(mb);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
};
SwingUtilities.invokeLater(r);
}
private static BufferedImage getScreenShot(Component component) {
BufferedImage image = new BufferedImage(component.getWidth(), component.getHeight(), BufferedImage.TYPE_INT_RGB);
// call the Component's paint method, using the Graphics object of the image.
component.paint(image.getGraphics());
return image;
}
public static BufferedImage resizeImage(BufferedImage originalImage, int width, int height, int type) throws IOException {
BufferedImage resizedImage = new BufferedImage(width, height, type);
Graphics2D g = resizedImage.createGraphics();
g.drawImage(originalImage, 0, 0, width, height, null);
g.dispose();
return resizedImage;
}
}