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JIDE Common Layer (Professional Swing Components)
/*
* @(#)NavitaionTreeIcon.java 11/3/2011
*
* Copyright 2002 - 2011 JIDE Software Inc. All rights reserved.
*/
package com.jidesoft.icons;
import com.jidesoft.swing.JideSwingUtilities;
import javax.swing.*;
import java.awt.*;
import java.awt.geom.GeneralPath;
/**
* RolloverIcon provides the expanded and collapsed tree icons that has rollover and fade effect. However
* it can be used to implement icon for any other purpose, not just the tree icons.
*
* @since 3.3.0
*/
public class RolloverIcon implements Icon {
/**
* All colors used by the default icons. You can change them to fit your L&F.
*/
public static Color COLOR_COLLAPSED_FILL_ROLLOVER = new Color(199, 235, 250);
public static Color COLOR_COLLAPSED_FILL = Color.WHITE;
public static Color COLOR_COLLAPSED_ROLLOVER = new Color(28, 196, 247);
public static Color COLOR_COLLAPSED = new Color(165, 165, 165);
public static Color COLOR_EXPANDED_FILL_ROLLOVER = new Color(130, 223, 251);
public static Color COLOR_EXPANDED_FILL = new Color(89, 89, 89);
public static Color COLOR_EXPANDED_ROLLOVER = new Color(28, 196, 247);
public static Color COLOR_EXPANDED = new Color(35, 35, 35);
public final static int ICON_EXPANDED = 0;
public final static int ICON_COLLAPSED = 1;
private Icon _normalIcon;
private Icon _rolloverIcon;
private IconRolloverSupport _rolloverSupport;
/**
* An interface that should be implemented on a component if you want to use an icon that supports rollover and fade
* (fade in or fade out) effect.
*/
public static interface IconRolloverSupport {
/**
* Checks if the mouse is over an icon. In the implementation, you can use a MouseMotionListener to detect the
* mouse position and see if it is over the icon.
*
* @param x x of the icon
* @param y y of the icon
* @param width icon width
* @param height icon height
* @return true if the mouse is over the icon. False if not.
*/
boolean isIconRollover(int x, int y, int width, int height);
/**
* Checks if the icon should be faded. Because the fade is an animation, we will call {@link #getIconAlpha()}
* immediately to find out the alpha value of the fade. In your implementation, you can use an Animator or any
* other animation frameworks to change the iconAlpha value and ask the icon to repaint itself again.
*
* @return true of the icon should be faded. If it returns true, {@link #getIconAlpha()} will be called to find
* out the alpha value.
*/
boolean isIconFade();
/**
* Gets the icon alpha value. We will paint the icon using the provided alpha value to create the fade effect.
*
* @return the icon alpha value.
*/
float getIconAlpha();
}
/**
* The default collapsed tree icon.
*/
public static class DefaultCollapsedIcon implements Icon {
private IconRolloverSupport _rolloverSupport;
public DefaultCollapsedIcon(IconRolloverSupport rolloverSupport) {
_rolloverSupport = rolloverSupport;
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
Graphics2D g2 = (Graphics2D) g;
Color orgColor = g2.getColor();
Object o = JideSwingUtilities.setupShapeAntialiasing(g);
GeneralPath path = new GeneralPath();
if (c.getComponentOrientation() == ComponentOrientation.RIGHT_TO_LEFT) {
path.moveTo(x + 4, y);
path.lineTo(x, y + 4);
path.lineTo(x + 4, y + 8);
}
else {
path.moveTo(x, y);
path.lineTo(x + 4, y + 4);
path.lineTo(x, y + 8);
}
path.closePath();
boolean rollover = _rolloverSupport.isIconRollover(x, y, getIconWidth(), getIconHeight());
g2.setColor(rollover ? COLOR_COLLAPSED_FILL_ROLLOVER : COLOR_COLLAPSED_FILL);
g2.fill(path);
g2.setColor(rollover ? COLOR_COLLAPSED_ROLLOVER : COLOR_COLLAPSED);
g2.draw(path);
g2.setColor(orgColor);
JideSwingUtilities.restoreShapeAntialiasing(g, o);
}
@Override
public int getIconWidth() {
return 6;
}
@Override
public int getIconHeight() {
return 9;
}
}
/**
* The default expanded tree icon.
*/
public static class DefaultExpandedIcon implements Icon {
private IconRolloverSupport _rolloverSupport;
public DefaultExpandedIcon(IconRolloverSupport rolloverSupport) {
_rolloverSupport = rolloverSupport;
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
Graphics2D g2 = (Graphics2D) g;
Color orgColor = g2.getColor();
Object o = JideSwingUtilities.setupShapeAntialiasing(g);
GeneralPath path = new GeneralPath();
if (c.getComponentOrientation() == ComponentOrientation.RIGHT_TO_LEFT) {
path.moveTo(x, y);
path.lineTo(x, y + 5);
path.lineTo(x + 5, y + 5);
}
else {
path.moveTo(x + 5, y);
path.lineTo(x + 5, y + 5);
path.lineTo(x, y + 5);
}
path.closePath();
boolean rollover = _rolloverSupport.isIconRollover(x, y, getIconWidth(), getIconHeight());
g2.setColor(rollover ? COLOR_EXPANDED_FILL_ROLLOVER : COLOR_EXPANDED_FILL);
g2.fill(path);
g2.setColor(rollover ? COLOR_EXPANDED_ROLLOVER : COLOR_EXPANDED);
g2.draw(path);
g2.setColor(orgColor);
JideSwingUtilities.restoreShapeAntialiasing(g, o);
}
@Override
public int getIconWidth() {
return 6;
}
@Override
public int getIconHeight() {
return 6;
}
}
/**
* Creates an RolloverIcon.
*
* @param rolloverSupport the IconRolloverSupport interface that should be implemented on a component.
* @param iconType the icon type. It could be either {@link #ICON_EXPANDED} or {@link #ICON_COLLAPSED}.
*/
public RolloverIcon(IconRolloverSupport rolloverSupport, int iconType) {
_rolloverSupport = rolloverSupport;
switch (iconType) {
case ICON_EXPANDED:
_normalIcon = new DefaultExpandedIcon(rolloverSupport);
break;
case ICON_COLLAPSED:
_normalIcon = new DefaultCollapsedIcon(rolloverSupport);
break;
}
_rolloverIcon = null;
}
/**
* Creates an RolloverIcon.
*
* @param rolloverSupport the IconRolloverSupport interface that should be implemented on a component.
* @param normalIcon the normal icon
*/
public RolloverIcon(IconRolloverSupport rolloverSupport, Icon normalIcon) {
_rolloverSupport = rolloverSupport;
_normalIcon = normalIcon;
_rolloverIcon = null;
}
/**
* Creates an RolloverIcon.
*
* @param rolloverSupport the IconRolloverSupport interface that should be implemented on a component.
* @param normalIcon the normal icon. This icon will be used to determine the icon size. The size of the
* rollover icon is ignored so you should make sure the two icons have the same size.
* @param rolloverIcon the rollover icon
*/
public RolloverIcon(IconRolloverSupport rolloverSupport, Icon normalIcon, Icon rolloverIcon) {
_rolloverSupport = rolloverSupport;
_normalIcon = normalIcon;
_rolloverIcon = rolloverIcon;
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
Graphics2D g2 = (Graphics2D) g;
Composite orgComposite = g2.getComposite();
if (_rolloverSupport.isIconFade()) {
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, _rolloverSupport.getIconAlpha()));
}
boolean rollover = _rolloverIcon != null && _rolloverIcon != _normalIcon && _rolloverSupport.isIconRollover(x, y, getIconWidth(), getIconHeight());
if (rollover) {
_rolloverIcon.paintIcon(c, g2, x, y);
}
else {
_normalIcon.paintIcon(c, g2, x, y);
}
g2.setComposite(orgComposite);
}
@Override
public int getIconWidth() {
return _normalIcon.getIconWidth();
}
@Override
public int getIconHeight() {
return _normalIcon.getIconHeight();
}
}
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