Package ca.corbett.extras.dirtree

Class DirTreeNodeIcon

java.lang.Object

ca.corbett.extras.dirtree.DirTreeNodeIcon

All Implemented Interfaces:

Icon

public class DirTreeNodeIcon
extends Object
implements Icon

Shamelessly stolen from StackOverflow. Draws nice simple little + and - icons next to tree nodes to indicate expand/collapse ability, instead of the horrible icons included in every major look and feel.

To use this code, you have to let the UIManager know about it:

 static {
 UIManager.put("Tree.collapsedIcon", new DirTreeNodeIcon('+'));
 UIManager.put("Tree.expandedIcon", new DirTreeNodeIcon('-'));
 }
 

But a better option is to use LookAndFeelManager to switch the LookAndFeel to something better than one of the Java built-in defaults. Then you won't need this at all.

Since:

2017-11-09

Author:

StackOverflow

Constructor Summary

Constructors

Constructor	Description
DirTreeNodeIcon(char type)

Method Summary

Modifier and Type	Method	Description
int	getIconHeight()
int	getIconWidth()
void	paintIcon(Component c, Graphics g, int x, int y)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DirTreeNodeIcon

public DirTreeNodeIcon(char type)

Method Details

paintIcon

public void paintIcon(Component c,
 Graphics g,
 int x,
 int y)

Specified by:

paintIcon in interface Icon

getIconWidth

public int getIconWidth()

Specified by:

getIconWidth in interface Icon

getIconHeight

public int getIconHeight()

Specified by:

getIconHeight in interface Icon