package org.cytoscape.ClusterViz.internal;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import javax.swing.CellRendererPane;
import javax.swing.JComponent;
import javax.swing.JTextArea;
import javax.swing.JToolTip;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicToolTipUI;
/**
* Implements a multi line tooltip for GUI components
* Copied from http://www.codeguru.com/java/articles/122.shtml
*
* @author Zafir Anjum
*/
public class JMultiLineToolTip extends JToolTip {
private static final long serialVersionUID = 7813662474312183098L;
public JMultiLineToolTip() {
updateUI();
}
public void updateUI() {
setUI(MultiLineToolTipUI.createUI(this));
}
public void setColumns(int columns) {
this.columns = columns;
this.fixedwidth = 0;
}
public int getColumns() {
return columns;
}
public void setFixedWidth(int width) {
this.fixedwidth = width;
this.columns = 0;
}
public int getFixedWidth() {
return fixedwidth;
}
protected int columns = 0;
protected int fixedwidth = 0;
}
/**
* UI for multi line tool tip
*/
class MultiLineToolTipUI extends BasicToolTipUI {
static MultiLineToolTipUI sharedInstance = new MultiLineToolTipUI();
Font smallFont;
static JToolTip tip;
protected CellRendererPane rendererPane;
private static JTextArea textArea;
public static ComponentUI createUI(JComponent c) {
return sharedInstance;
}
public MultiLineToolTipUI() {
super();
}
public void installUI(JComponent c) {
super.installUI(c);
tip = (JToolTip) c;
rendererPane = new CellRendererPane();
c.add(rendererPane);
}
public void uninstallUI(JComponent c) {
super.uninstallUI(c);
c.remove(rendererPane);
rendererPane = null;
}
public void paint(Graphics g, JComponent c) {
Dimension size = c.getSize();
textArea.setBackground(c.getBackground());
rendererPane.paintComponent(g, textArea, c, 1, 1, size.width - 1, size.height - 1, true);
}
public Dimension getPreferredSize(JComponent c) {
String tipText = ((JToolTip) c).getTipText();
if (tipText == null) return new Dimension(0, 0);
textArea = new JTextArea(tipText);
rendererPane.removeAll();
rendererPane.add(textArea);
textArea.setWrapStyleWord(true);
int width = ((JMultiLineToolTip) c).getFixedWidth();
int columns = ((JMultiLineToolTip) c).getColumns();
if (columns > 0) {
textArea.setColumns(columns);
textArea.setSize(0, 0);
textArea.setLineWrap(true);
textArea.setSize(textArea.getPreferredSize());
} else if (width > 0) {
textArea.setLineWrap(true);
Dimension d = textArea.getPreferredSize();
d.width = width;
d.height++;
textArea.setSize(d);
} else
textArea.setLineWrap(false);
Dimension dim = textArea.getPreferredSize();
dim.height += 1;
dim.width += 1;
return dim;
}
public Dimension getMinimumSize(JComponent c) {
return getPreferredSize(c);
}
public Dimension getMaximumSize(JComponent c) {
return getPreferredSize(c);
}
}