Following from a previously asked question Java Swing selecting a panel, I am trying to change the icons shown in the example to miniaturised Graphics2D objects.
My program will have several panels, each with a Graphics2D drawing in them, and on clicking a panel, an enlarged view will appear nearby (also as shown in the example from the other question's answer.
My issue now is generating a small icon from the Graphics2D drawing in each panel. Currently, I am having trouble creating the icon and using it.
public class BiomorphPanel extends JPanel{
PointCalc pc = new PointCalc();
private JLabel label = new JLabel();
private ImageIcon icon;
public JLabel getLabel() {
return label;
}
public BiomorphPanel(){
this.add(label);
}
private void doDrawing(Graphics g){
Graphics2D g2d = (Graphics2D) g;
//g2d.scale(0.1, 0.1);
BufferedImage img = new BufferedImage(31, 31, BufferedImage.TYPE_INT_RGB);
Graphics2D g2dIcon = (Graphics2D) img.getGraphics();
drawAll(g2d);
drawAll(g2dIcon);
g2dIcon.setColor(Color.BLACK);
g2dIcon.fillRect(0, 0, 31, 31);
g2dIcon.drawImage(img, null, 0, 0);
icon = new ImageIcon(img);
//icon = new ImageIcon(gra);
}
@Override
public void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
//scaling and translating to fit into mini panels in GUI
// g2.scale(0.15, 0.15);
//g2.translate(-100.0, 0.0);
super.paintComponent(g2);
doDrawing(g2);
}
public ImageIcon getIcon(){
return icon;
}
public void drawAll(Graphics2D g2d){
//draw head
Polygon hPoints = pc.getHeadPoints();
g2d.drawPolygon(hPoints);
//draw eyes
Pair<Polygon, Polygon> ePoints = pc.getAllEyePoints();
g2d.drawPolygon(ePoints.x);
g2d.drawPolygon(ePoints.y);
//draw eyebrows
Pair<HashMap<Integer, Pair<Integer, Integer>>, HashMap<Integer, Pair<Integer, Integer>>> ebPoints = pc.getEyebrowPoints();
g2d.drawLine(ebPoints.x.get(0).x, ebPoints.x.get(0).y, ebPoints.x.get(1).x, ebPoints.x.get(1).y);
g2d.drawLine(ebPoints.y.get(0).x, ebPoints.y.get(0).y, ebPoints.y.get(1).x, ebPoints.y.get(1).y);
//draw nose
HashMap<Integer, Pair<Integer, Integer>> nPoints = pc.getNosePoints();
g2d.drawLine(nPoints.get(0).x, nPoints.get(0).y, nPoints.get(1).x, nPoints.get(1).y);
g2d.drawLine(nPoints.get(1).x, nPoints.get(1).y, nPoints.get(2).x, nPoints.get(2).y);
//draw mouth
Pair<HashMap<Integer, Pair<Integer, Integer>>, HashMap<Integer, Pair<Integer, Integer>>> mPoints = pc.getMouthPoints();
g2d.drawLine(mPoints.x.get(0).x, mPoints.x.get(0).y, mPoints.x.get(1).x, mPoints.x.get(1).y);
g2d.drawLine(mPoints.x.get(1).x, mPoints.x.get(1).y, mPoints.x.get(2).x, mPoints.x.get(2).y);
g2d.drawLine(mPoints.y.get(0).x, mPoints.y.get(0).y, mPoints.y.get(1).x, mPoints.y.get(1).y);
g2d.drawLine(mPoints.y.get(1).x, mPoints.y.get(1).y, mPoints.y.get(2).x, mPoints.y.get(2).y);
}
}
Above is where I try to create the ImageIcon.
public class ListDisplayPanel extends Component{
//private static final Icon icon = UIManager.getIcon("html.pendingImage");
private ListPanel listPanel = new ListPanel();
private BiomorphPanel displayPanel1 = new BiomorphPanel();
private BiomorphPanel displayPanel2 = new BiomorphPanel();
private Icon icon = displayPanel1.getIcon();
private JPanel dpHold = new JPanel();
private class ListPanel extends JPanel {
private static final int N = 5;
private DefaultListModel dlm = new DefaultListModel();
private JList list = new JList(dlm);
public ListPanel() {
super(new GridLayout());
for (int i = 0; i < N * N; i++) {
String name = "Cell-" + String.format("%02d", i);
dlm.addElement(name);
}
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
list.setVisibleRowCount(N);
list.setCellRenderer(new ListRenderer());
list.addListSelectionListener(new SelectionHandler());
this.add(list);
}
private class ListRenderer extends DefaultListCellRenderer {
@Override
public Component getListCellRendererComponent(JList list,
Object value, int index, boolean isSelected, boolean cellHasFocus) {
JLabel label = (JLabel) super.getListCellRendererComponent(
list, value, index, isSelected, cellHasFocus);
label.setBorder(BorderFactory.createEmptyBorder(N, N, N, N));
label.setIcon(icon);
label.setHorizontalTextPosition(JLabel.CENTER);
label.setVerticalTextPosition(JLabel.BOTTOM);
return label;
}
}
private class SelectionHandler implements ListSelectionListener {
@Override
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
displayPanel1.getLabel().setText((String) dlm.getElementAt(e.getLastIndex()));
displayPanel2.getLabel().setText((String) dlm.getElementAt(e.getLastIndex()));
}
}
}
}
private void display() {
JFrame f = new JFrame("Test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JSplitPane jsp = new JSplitPane();
jsp.setLeftComponent(new JScrollPane(listPanel));
JSplitPane jsp2 = new JSplitPane();
jsp2.setTopComponent(displayPanel1);
jsp2.setBottomComponent(displayPanel2);
jsp.setRightComponent(jsp2);
f.add(jsp);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
public static void main(String[] args) {
/*EventQueue.invokeLater(() ->*/ {
new ListDisplayPanel().display();
};
}
}
And here is where I try to use the icon created. When I run the class, no icons appear for each 'cell' in the menu. Are the icons not created correctly or are they not used correctly? I cannot tell.
Thank you
