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