Component TitledPane Example 1
// Example from http://www.crionics.com/products/opensource/faq/swing_ex/SwingExamples.html
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.ButtonGroup;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.TitledBorder;
/**
* @version 1.0 08/12/99
*/
public class CompTitledPaneExample1 extends JFrame {
String title = "<html>Title ("
+ "<font color=\"#ffffff\"><i>JLabel</i></font>" + ")";
public CompTitledPaneExample1() {
super("CompTitledPaneExample1");
JLabel titleLabel = new JLabel(title);
CompTitledPane p1 = new CompTitledPane(titleLabel);
JPanel p = p1.getContentPane();
p.setLayout(new BorderLayout());
p.add(new SwitchPanel(p1), BorderLayout.CENTER);
getContentPane().add(p1, BorderLayout.CENTER);
}
class SwitchPanel extends JPanel implements ActionListener {
String[] posStr = { "", "ABOVE_TOP", "TOP", "BELOW_TOP",
"ABOVE_BOTTOM", "BOTTOM", "BELOW_BOTTOM" };
String[] jusStr = { "", "LEFT", "CENTER", "RIGHT" };
TitledBorder border;
CompTitledPane panel;
SwitchPanel(CompTitledPane panel) {
this.panel = panel;
this.border = (TitledBorder) panel.getBorder();
add(createPanel("Position", posStr, 2));
add(createPanel("Justification", jusStr, 1));
}
JPanel createPanel(String str, String[] strs, int selectPos) {
JPanel p = new JPanel();
p.setLayout(new GridLayout(strs.length, 1));
p.add(new JLabel(str));
ButtonGroup g = new ButtonGroup();
for (int i = 1; i < strs.length; i++) {
JRadioButton b = new JRadioButton(strs[i]);
if (i == selectPos) {
b.setSelected(true);
}
p.add(b);
g.add(b);
b.addActionListener(this);
}
return p;
}
public void actionPerformed(ActionEvent e) {
JRadioButton b = (JRadioButton) e.getSource();
String label = b.getText();
for (int i = 1; i < posStr.length; i++) {
if (label.equals(posStr[i])) {
border.setTitlePosition(i);
panel.revalidate();
panel.repaint();
return;
}
}
for (int i = 1; i < jusStr.length; i++) {
if (label.equals(jusStr[i])) {
border.setTitleJustification(i);
panel.revalidate();
panel.repaint();
return;
}
}
}
}
public static void main(String args[]) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception evt) {}
CompTitledPaneExample1 frame = new CompTitledPaneExample1();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setSize(280, 230);
frame.setVisible(true);
}
}
/**
* @version 1.0 08/12/99
*/
class CompTitledPane extends JPanel {
protected CompTitledBorder border;
protected JComponent component;
protected JPanel panel;
protected boolean transmittingAllowed;
protected StateTransmitter transmitter;
public CompTitledPane() {
this(new JLabel("Title"));
// debug
// JLabel label = (JLabel)getTitleComponent();
// label.setOpaque(true);
// label.setBackground(Color.yellow);
}
public CompTitledPane(JComponent component) {
this.component = component;
border = new CompTitledBorder(component);
setBorder(border);
panel = new JPanel();
setLayout(null);
add(component);
add(panel);
transmittingAllowed = false;
transmitter = null;
}
public JComponent getTitleComponent() {
return component;
}
public void setTitleComponent(JComponent newComponent) {
remove(component);
add(newComponent);
border.setTitleComponent(newComponent);
component = newComponent;
}
public JPanel getContentPane() {
return panel;
}
public void doLayout() {
Insets insets = getInsets();
Rectangle rect = getBounds();
rect.x = 0;
rect.y = 0;
Rectangle compR = border.getComponentRect(rect, insets);
component.setBounds(compR);
rect.x += insets.left;
rect.y += insets.top;
rect.width -= insets.left + insets.right;
rect.height -= insets.top + insets.bottom;
panel.setBounds(rect);
}
public void setTransmittingAllowed(boolean enable) {
transmittingAllowed = enable;
}
public boolean getTransmittingAllowed() {
return transmittingAllowed;
}
public void setTransmitter(StateTransmitter transmitter) {
this.transmitter = transmitter;
}
public StateTransmitter getTransmitter() {
return transmitter;
}
public void setEnabled(boolean enable) {
super.setEnabled(enable);
if (transmittingAllowed && transmitter != null) {
transmitter.setChildrenEnabled(enable);
}
}
}
interface StateTransmitter {
public void setChildrenEnabled(boolean enable);
}
class CompTitledBorder extends TitledBorder {
protected JComponent component;
public CompTitledBorder(JComponent component) {
this(null, component, LEFT, TOP);
}
public CompTitledBorder(Border border) {
this(border, null, LEFT, TOP);
}
public CompTitledBorder(Border border, JComponent component) {
this(border, component, LEFT, TOP);
}
public CompTitledBorder(Border border, JComponent component,
int titleJustification, int titlePosition) {
super(border, null, titleJustification, titlePosition, null, null);
this.component = component;
if (border == null) {
this.border = super.getBorder();
}
}
public void paintBorder(Component c, Graphics g, int x, int y, int width,
int height) {
Rectangle borderR = new Rectangle(x + EDGE_SPACING, y + EDGE_SPACING,
width - (EDGE_SPACING * 2), height - (EDGE_SPACING * 2));
Insets borderInsets;
if (border != null) {
borderInsets = border.getBorderInsets(c);
} else {
borderInsets = new Insets(0, 0, 0, 0);
}
Rectangle rect = new Rectangle(x, y, width, height);
Insets insets = getBorderInsets(c);
Rectangle compR = getComponentRect(rect, insets);
int diff;
switch (titlePosition) {
case ABOVE_TOP:
diff = compR.height + TEXT_SPACING;
borderR.y += diff;
borderR.height -= diff;
break;
case TOP:
case DEFAULT_POSITION:
diff = insets.top / 2 - borderInsets.top - EDGE_SPACING;
borderR.y += diff;
borderR.height -= diff;
break;
case BELOW_TOP:
case ABOVE_BOTTOM:
break;
case BOTTOM:
diff = insets.bottom / 2 - borderInsets.bottom - EDGE_SPACING;
borderR.height -= diff;
break;
case BELOW_BOTTOM:
diff = compR.height + TEXT_SPACING;
borderR.height -= diff;
break;
}
border.paintBorder(c, g, borderR.x, borderR.y, borderR.width,
borderR.height);
Color col = g.getColor();
g.setColor(c.getBackground());
g.fillRect(compR.x, compR.y, compR.width, compR.height);
g.setColor(col);
component.repaint();
}
public Insets getBorderInsets(Component c, Insets insets) {
Insets borderInsets;
if (border != null) {
borderInsets = border.getBorderInsets(c);
} else {
borderInsets = new Insets(0, 0, 0, 0);
}
insets.top = EDGE_SPACING + TEXT_SPACING + borderInsets.top;
insets.right = EDGE_SPACING + TEXT_SPACING + borderInsets.right;
insets.bottom = EDGE_SPACING + TEXT_SPACING + borderInsets.bottom;
insets.left = EDGE_SPACING + TEXT_SPACING + borderInsets.left;
if (c == null || component == null) {
return insets;
}
int compHeight = 0;
if (component != null) {
compHeight = component.getPreferredSize().height;
}
switch (titlePosition) {
case ABOVE_TOP:
insets.top += compHeight + TEXT_SPACING;
break;
case TOP:
case DEFAULT_POSITION:
insets.top += Math.max(compHeight, borderInsets.top)
- borderInsets.top;
break;
case BELOW_TOP:
insets.top += compHeight + TEXT_SPACING;
break;
case ABOVE_BOTTOM:
insets.bottom += compHeight + TEXT_SPACING;
break;
case BOTTOM:
insets.bottom += Math.max(compHeight, borderInsets.bottom)
- borderInsets.bottom;
break;
case BELOW_BOTTOM:
insets.bottom += compHeight + TEXT_SPACING;
break;
}
return insets;
}
public JComponent getTitleComponent() {
return component;
}
public void setTitleComponent(JComponent component) {
this.component = component;
}
public Rectangle getComponentRect(Rectangle rect, Insets borderInsets) {
Dimension compD = component.getPreferredSize();
Rectangle compR = new Rectangle(0, 0, compD.width, compD.height);
switch (titlePosition) {
case ABOVE_TOP:
compR.y = EDGE_SPACING;
break;
case TOP:
case DEFAULT_POSITION:
compR.y = EDGE_SPACING
+ (borderInsets.top - EDGE_SPACING - TEXT_SPACING - compD.height)
/ 2;
break;
case BELOW_TOP:
compR.y = borderInsets.top - compD.height - TEXT_SPACING;
break;
case ABOVE_BOTTOM:
compR.y = rect.height - borderInsets.bottom + TEXT_SPACING;
break;
case BOTTOM:
compR.y = rect.height
- borderInsets.bottom
+ TEXT_SPACING
+ (borderInsets.bottom - EDGE_SPACING - TEXT_SPACING - compD.height)
/ 2;
break;
case BELOW_BOTTOM:
compR.y = rect.height - compD.height - EDGE_SPACING;
break;
}
switch (titleJustification) {
case LEFT:
case DEFAULT_JUSTIFICATION:
compR.x = TEXT_INSET_H + borderInsets.left;
break;
case RIGHT:
compR.x = rect.width - borderInsets.right - TEXT_INSET_H
- compR.width;
break;
case CENTER:
compR.x = (rect.width - compR.width) / 2;
break;
}
return compR;
}
}
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