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Added a export-to-PNG button in the dialog that is launched after invoking org.antlr.v4.runtime.misc.TestRig with the "-gui" parameter. When pressed, a PNG file of the parse tree is created in the present working directory.

This commit is contained in:
Bart Kiers 2013-03-06 21:05:19 +01:00
parent c35f5ec40c
commit 39f58b95ae
2 changed files with 40 additions and 11 deletions
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1
contributors.txt
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@ -53,4 +53,5 @@ YYYY/MM/DD, github id, Full name, email
2012/10/10, stephengaito, Stephen Gaito, stephen@percepitsys.co.uk
2012/11/23, maguro, Alan Cabrera, adc@toolazydogs.com
2013/01/29, metadave, Dave Parfitt, diparfitt@gmail.com
2013/03/06, bkiers, Bart Kiers, bkiers@gmail.com

48
runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreeViewer.java
View File

@ -42,16 +42,9 @@ import org.antlr.v4.runtime.tree.ErrorNode;
import org.antlr.v4.runtime.tree.Tree;
import org.antlr.v4.runtime.tree.Trees;
import javax.imageio.ImageIO;
import javax.print.PrintException;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSlider;
import javax.swing.SwingUtilities;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.BasicStroke;
@ -69,6 +62,8 @@ import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
@ -293,9 +288,42 @@ public class TreeViewer extends JComponent {
// Make the scrollpane (containing the viewer) the center component
contentPane.add(scrollPane, BorderLayout.CENTER);
JPanel wrapper = new JPanel(new FlowLayout());
// Add an export-to-png button left of the "OK" button
JButton png = new JButton("png");
png.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
BufferedImage bi = new BufferedImage(viewer.getSize().width,
viewer.getSize().height, BufferedImage.TYPE_INT_ARGB);
Graphics g = bi.createGraphics();
viewer.paint(g);
g.dispose();
try{
File pngFile = new File("antlrv4_parse_tree_" +
System.currentTimeMillis() + ".png");
ImageIO.write(bi, "png", pngFile);
JOptionPane.showMessageDialog(dialog,
"Saved PNG to: " + pngFile.getAbsolutePath());
} catch (Exception ex) {
JOptionPane.showMessageDialog(dialog,
"Could not export to PNG: " + ex.getMessage(),
"Error",
JOptionPane.ERROR_MESSAGE);
ex.printStackTrace();
}
}
}
);
wrapper.add(png);
// Add button to bottom
JPanel bottomPanel = new JPanel(new BorderLayout(0,0));
contentPane.add(bottomPanel, BorderLayout.SOUTH);
JButton ok = new JButton("OK");
ok.addActionListener(
new ActionListener() {
@ -306,8 +334,8 @@ public class TreeViewer extends JComponent {
}
}
);
JPanel wrapper = new JPanel(new FlowLayout());
wrapper.add(ok);
bottomPanel.add(wrapper, BorderLayout.SOUTH);
// Add scale slider