123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146 |
- /* ========================================================================
- * JCommon : a free general purpose class library for the Java(tm) platform
- * ========================================================================
- *
- * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
- *
- * Project Info: http://www.jfree.org/jcommon/index.html
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library 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 Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * USA.
- *
- * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
- * in the United States and other countries.]
- *
- * ---------------
- * ArrowPanel.java
- * ---------------
- * (C) Copyright 2002-2004, by Object Refinery Limited.
- *
- * Original Author: David Gilbert (for Object Refinery Limited);
- * Contributor(s): -;
- *
- * $Id: ArrowPanel.java,v 1.6 2007/11/02 17:50:36 taqua Exp $
- *
- * Changes
- * -------
- * 25-Sep-2002 : Version 1 (DG);
- * 13-Oct-2002 : Added Javadocs (DG);
- *
- */
- package org.jfree.ui;
- import java.awt.Dimension;
- import java.awt.Graphics;
- import java.awt.Graphics2D;
- import java.awt.Insets;
- import java.awt.Polygon;
- import java.awt.Shape;
- import java.awt.geom.Rectangle2D;
- import javax.swing.JPanel;
- /**
- * A basic panel that displays a small up or down arrow.
- *
- * @author David Gilbert
- */
- public class ArrowPanel extends JPanel {
- /** A constant for the up arrow. */
- public static final int UP = 0;
- /** A constant for the down arrow. */
- public static final int DOWN = 1;
- /** The arrow type. */
- private int type = UP;
- /** The available area. */
- private Rectangle2D available = new Rectangle2D.Float();
- /**
- * Creates a new arrow panel.
- *
- * @param type the arrow type.
- */
- public ArrowPanel(final int type) {
- this.type = type;
- setPreferredSize(new Dimension(14, 9));
- }
- /**
- * Paints the arrow panel.
- *
- * @param g the graphics device for drawing on.
- */
- public void paintComponent(final Graphics g) {
- super.paintComponent(g);
- final Graphics2D g2 = (Graphics2D) g;
- // first determine the size of the drawing area...
- final Dimension size = getSize();
- final Insets insets = getInsets();
- this.available.setRect(insets.left, insets.top,
- size.getWidth() - insets.left - insets.right,
- size.getHeight() - insets.top - insets.bottom);
- g2.translate(insets.left, insets.top);
- g2.fill(getArrow(this.type));
- }
- /**
- * Returns a shape for the arrow.
- *
- * @param t the arrow type.
- *
- * @return the arrow shape.
- */
- private Shape getArrow(final int t) {
- switch (t) {
- case UP : return getUpArrow();
- case DOWN : return getDownArrow();
- default : return getUpArrow();
- }
- }
- /**
- * Returns an up arrow.
- *
- * @return an up arrow.
- */
- private Shape getUpArrow() {
- final Polygon result = new Polygon();
- result.addPoint(7, 2);
- result.addPoint(2, 7);
- result.addPoint(12, 7);
- return result;
- }
- /**
- * Returns a down arrow.
- *
- * @return a down arrow.
- */
- private Shape getDownArrow() {
- final Polygon result = new Polygon();
- result.addPoint(7, 7);
- result.addPoint(2, 2);
- result.addPoint(12, 2);
- return result;
- }
- }
|