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comparison visualizer/View/src/com/sun/hotspot/igv/view/scene/CustomizablePanWidgetAction.java @ 4512:015fb895586b

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Moved visualizer to new directory.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Tue, 07 Feb 2012 22:41:09 +0100
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4511:6cb549627941 4512:015fb895586b
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.
5 *
6 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
7 * Other names may be trademarks of their respective owners.
8 *
9 * The contents of this file are subject to the terms of either the GNU
10 * General Public License Version 2 only ("GPL") or the Common
11 * Development and Distribution License("CDDL") (collectively, the
12 * "License"). You may not use this file except in compliance with the
13 * License. You can obtain a copy of the License at
14 * http://www.netbeans.org/cddl-gplv2.html
15 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
16 * specific language governing permissions and limitations under the
17 * License. When distributing the software, include this License Header
18 * Notice in each file and include the License file at
19 * nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this
20 * particular file as subject to the "Classpath" exception as provided
21 * by Oracle in the GPL Version 2 section of the License file that
22 * accompanied this code. If applicable, add the following below the
23 * License Header, with the fields enclosed by brackets [] replaced by
24 * your own identifying information:
25 * "Portions Copyrighted [year] [name of copyright owner]"
26 *
27 * Contributor(s):
28 *
29 * The Original Software is NetBeans. The Initial Developer of the Original
30 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
31 * Microsystems, Inc. All Rights Reserved.
32 *
33 * If you wish your version of this file to be governed by only the CDDL
34 * or only the GPL Version 2, indicate your decision by adding
35 * "[Contributor] elects to include this software in this distribution
36 * under the [CDDL or GPL Version 2] license." If you do not indicate a
37 * single choice of license, a recipient has the option to distribute
38 * your version of this file under either the CDDL, the GPL Version 2 or
39 * to extend the choice of license to its licensees as provided above.
40 * However, if you add GPL Version 2 code and therefore, elected the GPL
41 * Version 2 license, then the option applies only if the new code is
42 * made subject to such option by the copyright holder.
43 */
44 package com.sun.hotspot.igv.view.scene;
45
46 import java.awt.Container;
47 import java.awt.Point;
48 import java.awt.Rectangle;
49 import javax.swing.JComponent;
50 import javax.swing.JScrollPane;
51 import javax.swing.SwingUtilities;
52 import org.netbeans.api.visual.action.WidgetAction;
53 import org.netbeans.api.visual.action.WidgetAction.State;
54 import org.netbeans.api.visual.action.WidgetAction.WidgetMouseEvent;
55 import org.netbeans.api.visual.widget.Scene;
56 import org.netbeans.api.visual.widget.Widget;
57
58 /**
59 * @author David Kaspar
60 * @author Peter Hofer
61 */
62 public class CustomizablePanWidgetAction extends WidgetAction.LockedAdapter {
63 private boolean enabled = true;
64
65 private Scene scene;
66 private JScrollPane scrollPane;
67 private Point lastLocation;
68
69 private final int modifiersExMask;
70 private final int modifiersEx;
71
72 public CustomizablePanWidgetAction(int modifiersExMask, int modifiersEx) {
73 this.modifiersExMask = modifiersExMask;
74 this.modifiersEx = modifiersEx;
75 }
76
77 @Override
78 protected boolean isLocked() {
79 return scrollPane != null;
80 }
81
82 public void setEnabled(boolean enabled) {
83 if (this.enabled != enabled) {
84 if (isLocked())
85 throw new IllegalStateException();
86
87 this.enabled = enabled;
88 }
89 }
90
91 @Override
92 public State mousePressed (Widget widget, WidgetMouseEvent event) {
93 if (isLocked ())
94 return State.createLocked (widget, this);
95 if (enabled && (event.getModifiersEx() & modifiersExMask) == modifiersEx) {
96 scene = widget.getScene ();
97 scrollPane = findScrollPane (scene.getView ());
98 if (scrollPane != null) {
99 lastLocation = scene.convertSceneToView (widget.convertLocalToScene (event.getPoint ()));
100 SwingUtilities.convertPointToScreen (lastLocation, scene.getView ());
101 return State.createLocked (widget, this);
102 }
103 }
104 return State.REJECTED;
105 }
106
107 private JScrollPane findScrollPane (JComponent component) {
108 for (;;) {
109 if (component == null)
110 return null;
111 if (component instanceof JScrollPane)
112 return ((JScrollPane) component);
113 Container parent = component.getParent ();
114 if (! (parent instanceof JComponent))
115 return null;
116 component = (JComponent) parent;
117 }
118 }
119
120 @Override
121 public State mouseReleased (Widget widget, WidgetMouseEvent event) {
122 boolean state = pan (widget, event.getPoint ());
123 if (state)
124 scrollPane = null;
125 return state ? State.createLocked (widget, this) : State.REJECTED;
126 }
127
128 @Override
129 public State mouseDragged (Widget widget, WidgetMouseEvent event) {
130 return pan (widget, event.getPoint ()) ? State.createLocked (widget, this) : State.REJECTED;
131 }
132
133 private boolean pan (Widget widget, Point newLocation) {
134 if (scrollPane == null || scene != widget.getScene ())
135 return false;
136 newLocation = scene.convertSceneToView (widget.convertLocalToScene (newLocation));
137 SwingUtilities.convertPointToScreen (newLocation, scene.getView ());
138 JComponent view = scene.getView ();
139 Rectangle rectangle = view.getVisibleRect ();
140 rectangle.x += lastLocation.x - newLocation.x;
141 rectangle.y += lastLocation.y - newLocation.y;
142 view.scrollRectToVisible (rectangle);
143 lastLocation = newLocation;
144 return true;
145 }
146 }