Mercurial > hg > truffle
annotate visualizer/View/src/com/sun/hotspot/igv/view/scene/CustomizablePanWidgetAction.java @ 4633:a1780986a4fe
Added missing file.
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 17 Feb 2012 19:24:53 +0100 |
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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; |
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142 view.scrollRectToVisible (rectangle); |
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143 lastLocation = newLocation; |
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144 return true; |
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145 } |
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146 } |