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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * 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
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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.
/** * Sorting icon. * */
@SuppressWarnings("serial") // JDK-implementation class 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 SortArrowIcon.
Params:
  • ascending – if true, icon respresenting ascending sort, otherwise descending
  • color – the color to render the icon
/** * 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 SortArrowIcon.
Params:
  • ascending – if true, icon respresenting ascending sort, otherwise descending
  • colorKey – the key used to find color in UIManager
/** * 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++) { g.fillRect(startX - line, startY - line, line + line + 1, 1); } } } public int getIconWidth() { return X_PADDING + ARROW_HEIGHT * 2; } public int getIconHeight() { return ARROW_HEIGHT + 2; } private Color getColor() { if (color != null) { return color; } return UIManager.getColor(colorKey); } }