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Java Source | 1998-06-30 | 4.4 KB | 146 lines |
- /*
- * @(#)MotifScrollBarUI.java 1.4 98/02/02
- *
- * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
- *
- * This software is the confidential and proprietary information of Sun
- * Microsystems, Inc. ("Confidential Information"). You shall not
- * disclose such Confidential Information and shall use it only in
- * accordance with the terms of the license agreement you entered into
- * with Sun.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
- * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
- * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
- * THIS SOFTWARE OR ITS DERIVATIVES.
- *
- */
- package com.sun.java.swing.plaf.motif;
-
- import com.sun.java.swing.*;
- import com.sun.java.swing.event.*;
- import com.sun.java.swing.plaf.*;
- import com.sun.java.swing.border.*;
- import com.sun.java.swing.plaf.basic.BasicScrollBarUI;
- import com.sun.java.swing.plaf.basic.BasicGraphicsUtils;
-
- import java.awt.Dimension;
- import java.awt.Insets;
- import java.awt.Rectangle;
- import java.awt.Graphics;
- import java.awt.Color;
-
-
- /**
- * Implementation of ScrollBarUI for the Motif Look and Feel
- * <p>
- * Warning: serialized objects of this class will not be compatible with
- * future swing releases. The current serialization support is appropriate
- * for short term storage or RMI between Swing1.0 applications. It will
- * not be possible to load serialized Swing1.0 objects with future releases
- * of Swing. The JDK1.2 release of Swing will be the compatibility
- * baseline for the serialized form of Swing objects.
- *
- * @version 1.4 02/02/98
- * @author Rich Schiavi
- * @author Hans Muller
- */
- public class MotifScrollBarUI extends BasicScrollBarUI
- {
- /* The following fields are returned by the corresponding
- * get methods rather than heap allocating new Dimension
- * objects.
- */
- private static final Dimension minimumThumbSize = new Dimension(8, 8);
- private static final Dimension maximumThumbSize = new Dimension(4096, 4096);
-
-
- /* The following static fields are lazily computed by
- * configureScrollBarColors() and are shared by all MotifScrollBarUI
- * instances.
- */
-
- private static Color thumbHighlightColor;
- private static Color thumbShadowColor;
- private static Color thumbColor;
- private static Color trackColor;
- private static boolean scrollBarColorsInitialized = false;
-
-
- public static ComponentUI createUI(JComponent c) {
- return new MotifScrollBarUI();
- }
-
-
- protected void configureScrollBarColors() {
- if (!scrollBarColorsInitialized) {
- thumbHighlightColor = UIManager.getColor("ScrollBar.thumbHighlight");
- thumbShadowColor = UIManager.getColor("ScrollBar.thumbLightShadow");
- thumbColor = UIManager.getColor("ScrollBar.thumb");
- trackColor = UIManager.getColor("ScrollBar.track");
- scrollBarColorsInitialized = true;
- }
- }
-
-
- public Dimension getPreferredSize(JComponent c) {
- Insets insets = c.getInsets();
- int dx = insets.left + insets.right;
- int dy = insets.top + insets.bottom;
- return (scrollbar.getOrientation() == JScrollBar.VERTICAL)
- ? new Dimension(dx + 11, dy + 33)
- : new Dimension(dx + 33, dy + 11);
- }
-
-
- protected Dimension getMinimumThumbSize() {
- return minimumThumbSize;
- }
-
- protected Dimension getMaximumThumbSize() {
- return maximumThumbSize;
- }
-
-
- protected JButton createDecreaseButton(int orientation) {
- return new MotifScrollBarButton(orientation);
- }
-
- protected JButton createIncreaseButton(int orientation) {
- return new MotifScrollBarButton(orientation);
- }
-
-
- public void paintTrack(Graphics g, JComponent c, Rectangle trackBounds) {
- g.setColor(trackColor);
- g.fillRect(trackBounds.x, trackBounds.y, trackBounds.width, trackBounds.height);
- }
-
-
- public void paintThumb(Graphics g, JComponent c, Rectangle thumbBounds)
- {
- if(thumbBounds.isEmpty() || !scrollbar.isEnabled()) {
- return;
- }
-
- int w = thumbBounds.width;
- int h = thumbBounds.height;
-
- g.translate(thumbBounds.x, thumbBounds.y);
- g.setColor(thumbColor);
- g.fillRect(0, 0, w-1, h-1);
-
- g.setColor(thumbHighlightColor);
- g.drawLine(0, 0, 0, h-1);
- g.drawLine(1, 0, w-1, 0);
-
- g.setColor(thumbShadowColor);
- g.drawLine(1, h-1, w-1, h-1);
- g.drawLine(w-1, 1, w-1, h-2);
-
- g.translate(-thumbBounds.x, -thumbBounds.y);
- }
- }
-