/*
* ImageMarker.java
*
* Benutzt die Klassen JComponentBounds und ComponentsContainer:
* http://wiki.byte-welt.net/wiki/JComponentBounds
* http://wiki.byte-welt.net/wiki/ComponentsContainer
*
* Hier wird ein "mainpanel" mit OverlayLayout benutzt.
* Darin sind ein "imagePanel" und ein überlagertes "markerPanel".
* Die Methode "addMarker(markerPanel)" fügt einen neuen Marker hinzu.
*/
import container.JComponentBounds;
import container.ComponentsContainer;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.beans.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
public class ImageMarker extends JFrame {
private final static String FILENAME = "Picture1.jpg";
private JPanel mainpanel;
private Rectangle marker;
private JButton btAddRect, btAddOval;
private final ComponentsContainer markerPanel;
private String filenameXml = "ImageMarker.xml";
private final JPanel controls;
public ImageMarker() {
super("ImageMarker");
setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
setSize(800, 600);
setLocationRelativeTo(null);
controls = new JPanel();
mainpanel = new JPanel() {
@Override
public boolean isOptimizedDrawingEnabled() {
return false;
}
};
mainpanel.setLayout(new OverlayLayout(mainpanel));
markerPanel = new ComponentsContainer();
load(null);
markerPanel.setOpaque(false);
Picture imagePanel = new Picture(FILENAME);
mainpanel.add(markerPanel);//zuerst den Marker Panel (vorne)
mainpanel.add(imagePanel);//dann die Bildkomponente (hinten)
add(new JScrollPane(mainpanel));
btAddRect = new JButton("Add Rectangle");
btAddRect.setPreferredSize(new Dimension(130, 25));
btAddRect.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) {
addMarker(markerPanel, MarkerComponent.RECT);
}
});
controls.add(btAddRect);
btAddOval = new JButton("Add Oval");
btAddOval.setPreferredSize(new Dimension(130, 25));
btAddOval.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) {
addMarker(markerPanel, MarkerComponent.OVAL);
}
});
controls.add(btAddOval);
add(controls, BorderLayout.SOUTH);
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(final WindowEvent e) {
save(null);
System.exit(0);
}
});
}
private void addMarker(final JPanel markerPanel, final int type) {
marker = new Rectangle(0, 0, 100, 100);
int m = JComponentBounds.MARGIN;
final MarkerComponent markerComponent = new MarkerComponent(
type, Color.RED, 1);
markerComponent.setSize(marker.width + m * 2, marker.height
+ m * 2);
markerComponent.setLocation(-m, -m);
markerPanel.add(markerComponent);
markerPanel.revalidate();
displayMarkers();
}
private void displayMarkers() {
System.out.println("Current Markers:");
int componentCount = markerPanel.getComponentCount();
for (int i = 0; i < componentCount; i++) {
MarkerComponent component = (MarkerComponent) markerPanel.getComponent(i);
int shape = component.getShape();
String shapeS = null;
if (shape == MarkerComponent.RECT) {
shapeS = "RECT";
} else if (shape == MarkerComponent.OVAL) {
shapeS = "OVAL";
}
Rectangle componentRect = component.getComponentRect();
System.out.println(shapeS + ": " + componentRect);
}
}
private String save(final String filenameXml) {
String returnValue = filenameXml;
try {
FileOutputStream fos = new FileOutputStream(
filenameXml == null ? this.filenameXml
: filenameXml);
XMLEncoder o = new XMLEncoder(new BufferedOutputStream(fos));
Component[] comps = markerPanel.getComponents();
for (int i = 0; i < comps.length; i++) {
o.writeObject(comps[i]);
}
o.close();
} catch (IOException e) {
JOptionPane.showMessageDialog(this, e.getMessage());
returnValue = null;
}
return returnValue;
}
private String load(final String filenameXml) {
String returnValue = filenameXml;
XMLDecoder d = null;
Object component = null;
try {
returnValue = filenameXml == null ? this.filenameXml
: filenameXml;
FileInputStream fis = new FileInputStream(returnValue);
d = new XMLDecoder(new BufferedInputStream(fis));
returnValue = new File(returnValue).getAbsolutePath();
try {
component = d.readObject();
markerPanel.removeAll();
while (component != null) {
markerPanel.add((Component) component);
component = d.readObject();
}
} catch (ArrayIndexOutOfBoundsException e) {
}
d.close();
} catch (FileNotFoundException ex) {
}
return returnValue;
}
public static void main(final String[] args) {
Runnable gui = new Runnable() {
public void run() {
new ImageMarker().setVisible(true);
}
};
//GUI must start on EventDispatchThread:
SwingUtilities.invokeLater(gui);
}
}
class Picture extends JComponent {
private BufferedImage image;
private String filename;
public Picture(String filename) {
this.filename = filename;
}
@Override
public void paintComponent(final Graphics g) {
super.paintComponent(g);
if (image == null) {
try {
image =
ImageIO.read(getClass().getResource(filename));
setPreferredSize(new Dimension(
image.getWidth(), image.getHeight()));
revalidate();
} catch (Exception ex) {
image = new BufferedImage(
800, 600, BufferedImage.TYPE_INT_ARGB);
Graphics graphics = image.getGraphics();
graphics.setColor(Color.red);
graphics.drawString("Bild nicht gefunden: "
+ filename, 300, 500);
}
}
Rectangle r = g.getClipBounds();
g.drawImage(image, r.x, r.y, r.width + r.x, r.height + r.y,
r.x, r.y, r.width + r.x, r.height + r.y, null);
}
public void setFilename(final String filename) {
this.filename = filename;
image = null;
repaint();
}
}
