I am trying to develop a map editor in java. My map window receives as a constructor a Map object. From that map object i am able to retrieve the Grid and every item in the grid along with other getters and setters.
The problem is that even though the Mapping extends JComponent, when I place it in a panel it is not painted. I have overridden the paint method to satisfy my needs. Here is the code, maybe you could help me.
public class MapTest extends JFrame implements ActionListener {
private JPanel mainPanel;
private JPanel mapPanel;
private JPanel minimapPanel;
private JPanel relationPanel;
private TableLayout tableLayout;
private JPanel tile;
MapTest(Map map) {
mainPanel = (JPanel) getContentPane();
mapPanel = new JPanel();
populateMapPanel(map);
mainPanel.add(mapPanel);
this.setPreferredSize(new Dimension(800, 600));
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
private double[][] generateTableLayoutSize(int x, int y, int size) {
double panelSize[][] = new double[x][y];
for (int i = 0; i < x; i++) {
for (int j = 0; j < y; j++) {
panelSize[i][j] = size;
}
}
return panelSize;
}
private void populateMapPanel(Map map) {
double[][] layoutSize = generateTableLayoutSize(map.getMapGrid().getRows(), map.getMapGrid().getColumns(), 50);
tableLayout = new TableLayout(layoutSize);
for(int i = 0; i < map.getMapGrid().getRows(); i++)
{
for(int j = 0; j < map.getMapGrid().getColumns(); j++)
{
tile = new JPanel();
tile.setName(String.valueOf(((Mapping)map.getMapGrid().getItem(i, j)).getCharacter()));
tile.add(map.getMapItem(i, j));
String constraint = i + "," + j;
mapPanel.add(tile, constraint);
}
}
mapPanel.validate();
mapPanel.repaint();
}
public void actionPerformed(ActionEvent e) {
throw new UnsupportedOperationException("Not supported yet.");
}
}
My Mapping Class
public class Mapping extends JComponent implements Serializable{
private BufferedImage image;
private Character character;
//default
public Mapping() {
super();
this.image = null;
this.character = '\u0000';
}
//Mapping from image and char
public Mapping(BufferedImage image, char character) {
super();
this.image = image;
this.character = character;
}
//Mapping from file and char
public Mapping(File file, char character) {
try {
this.image = ImageIO.read(file);
this.character = character;
} catch (IOException ex) {
System.out.println(ex);
}
}
public char getCharacter() {
return character;
}
public void setCharacter(char character) {
this.character = character;
}
public BufferedImage getImage() {
return image;
}
public void setImage(BufferedImage image) {
this.image = image;
repaint();
}
@Override
/*Two mappings are consider the same if
-they have the same image OR
-they have the same character OR
-both of the above*/
public boolean equals(Object mapping) {
if (this == mapping) {
return true;
}
if (mapping instanceof Mapping) {
return true;
}
//WARNING! equals might not work for images
return (this.getImage()).equals(((Mapping) mapping).getImage())
|| (this.getCharacter()) == (((Mapping) mapping).getCharacter());
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
//g.drawImage(image, 0, 0, null);
g.drawImage(image, 0, 0, this.getWidth(), this.getHeight(), null);
}
// @Override
// public Dimension getPreferredSize() {
// if (image == null) {
// return new Dimension(10, 10); //instead of 100,100 set any prefered dimentions
// } else {
// return new Dimension(100, 100);//(image.getWidth(null), image.getHeight(null));
// }
// }
private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
character = (Character) in.readObject();
image = ImageIO.read(ImageIO.createImageInputStream(in));
}
private void writeObject(java.io.ObjectOutputStream out) throws IOException {
out.writeObject(character);
ImageWriter writer = (ImageWriter) ImageIO.getImageWritersBySuffix("jpg").next();
writer.setOutput(ImageIO.createImageOutputStream(out));
ImageWriteParam param = writer.getDefaultWriteParam();
param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
param.setCompressionQuality(0.85f);
writer.write(null, new IIOImage(image, null, null), param);
}
}
