/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.swing.icon;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.io.Serializable;
import javax.swing.Icon;
import javax.swing.UIManager;
import javax.swing.plaf.UIResource;
/**
* Sorting icon.
*
*/
public class SortArrowIcon implements Icon, UIResource, Serializable {
// Height of the arrow, the width is ARROW_HEIGHT
private static final int ARROW_HEIGHT = 5;
// Amount of pad to left of arrow
private static final int X_PADDING = 7;
// Sort direction
private boolean ascending;
// The Color to use, may be null indicating colorKey should be used
private Color color;
// If non-null indicates the color should come from the UIManager with
// this key.
private String colorKey;
/**
* Creates a <code>SortArrowIcon</code>.
*
* @param ascending if true, icon respresenting ascending sort, otherwise
* descending
* @param color the color to render the icon
*/
public SortArrowIcon(boolean ascending, Color color) {
this.ascending = ascending;
this.color = color;
if (color == null) {
throw new IllegalArgumentException();
}
}
/**
* Creates a <code>SortArrowIcon</code>.
*
* @param ascending if true, icon respresenting ascending sort, otherwise
* descending
* @param colorKey the key used to find color in UIManager
*/
public SortArrowIcon(boolean ascending, String colorKey) {
this.ascending = ascending;
this.colorKey = colorKey;
if (colorKey == null) {
throw new IllegalArgumentException();
}
}
public void paintIcon(Component c, Graphics g, int x, int y) {
g.setColor(getColor());
int startX = X_PADDING + x + ARROW_HEIGHT / 2;
if (ascending) {
int startY = y;
g.fillRect(startX, startY, 1, 1);
for (int line = 1; line < ARROW_HEIGHT; line++) {
g.fillRect(startX - line, startY + line,
line + line + 1, 1);
}
}
else {
int startY = y + ARROW_HEIGHT - 1;
g.fillRect(startX, startY, 1, 1);
for (int line = 1; line < ARROW_HEIGHT; line++) {
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