Mercurial > hg > truffle
view visualizer/View/src/com/sun/hotspot/igv/view/scene/CustomizablePanWidgetAction.java @ 11638:269e6794e1ec
Truffle: Frame restructuring.
author | Andreas Woess <andreas.woess@jku.at> |
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date | Sun, 15 Sep 2013 02:39:07 +0200 |
parents | 015fb895586b |
children |
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/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved. * * Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common * Development and Distribution License("CDDL") (collectively, the * "License"). You may not use this file except in compliance with the * License. You can obtain a copy of the License at * http://www.netbeans.org/cddl-gplv2.html * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the * specific language governing permissions and limitations under the * License. When distributing the software, include this License Header * Notice in each file and include the License file at * nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the * License Header, with the fields enclosed by brackets [] replaced by * your own identifying information: * "Portions Copyrighted [year] [name of copyright owner]" * * Contributor(s): * * The Original Software is NetBeans. The Initial Developer of the Original * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun * Microsystems, Inc. All Rights Reserved. * * If you wish your version of this file to be governed by only the CDDL * or only the GPL Version 2, indicate your decision by adding * "[Contributor] elects to include this software in this distribution * under the [CDDL or GPL Version 2] license." If you do not indicate a * single choice of license, a recipient has the option to distribute * your version of this file under either the CDDL, the GPL Version 2 or * to extend the choice of license to its licensees as provided above. * However, if you add GPL Version 2 code and therefore, elected the GPL * Version 2 license, then the option applies only if the new code is * made subject to such option by the copyright holder. */ package com.sun.hotspot.igv.view.scene; import java.awt.Container; import java.awt.Point; import java.awt.Rectangle; import javax.swing.JComponent; import javax.swing.JScrollPane; import javax.swing.SwingUtilities; import org.netbeans.api.visual.action.WidgetAction; import org.netbeans.api.visual.action.WidgetAction.State; import org.netbeans.api.visual.action.WidgetAction.WidgetMouseEvent; import org.netbeans.api.visual.widget.Scene; import org.netbeans.api.visual.widget.Widget; /** * @author David Kaspar * @author Peter Hofer */ public class CustomizablePanWidgetAction extends WidgetAction.LockedAdapter { private boolean enabled = true; private Scene scene; private JScrollPane scrollPane; private Point lastLocation; private final int modifiersExMask; private final int modifiersEx; public CustomizablePanWidgetAction(int modifiersExMask, int modifiersEx) { this.modifiersExMask = modifiersExMask; this.modifiersEx = modifiersEx; } @Override protected boolean isLocked() { return scrollPane != null; } public void setEnabled(boolean enabled) { if (this.enabled != enabled) { if (isLocked()) throw new IllegalStateException(); this.enabled = enabled; } } @Override public State mousePressed (Widget widget, WidgetMouseEvent event) { if (isLocked ()) return State.createLocked (widget, this); if (enabled && (event.getModifiersEx() & modifiersExMask) == modifiersEx) { scene = widget.getScene (); scrollPane = findScrollPane (scene.getView ()); if (scrollPane != null) { lastLocation = scene.convertSceneToView (widget.convertLocalToScene (event.getPoint ())); SwingUtilities.convertPointToScreen (lastLocation, scene.getView ()); return State.createLocked (widget, this); } } return State.REJECTED; } private JScrollPane findScrollPane (JComponent component) { for (;;) { if (component == null) return null; if (component instanceof JScrollPane) return ((JScrollPane) component); Container parent = component.getParent (); if (! (parent instanceof JComponent)) return null; component = (JComponent) parent; } } @Override public State mouseReleased (Widget widget, WidgetMouseEvent event) { boolean state = pan (widget, event.getPoint ()); if (state) scrollPane = null; return state ? State.createLocked (widget, this) : State.REJECTED; } @Override public State mouseDragged (Widget widget, WidgetMouseEvent event) { return pan (widget, event.getPoint ()) ? State.createLocked (widget, this) : State.REJECTED; } private boolean pan (Widget widget, Point newLocation) { if (scrollPane == null || scene != widget.getScene ()) return false; newLocation = scene.convertSceneToView (widget.convertLocalToScene (newLocation)); SwingUtilities.convertPointToScreen (newLocation, scene.getView ()); JComponent view = scene.getView (); Rectangle rectangle = view.getVisibleRect (); rectangle.x += lastLocation.x - newLocation.x; rectangle.y += lastLocation.y - newLocation.y; view.scrollRectToVisible (rectangle); lastLocation = newLocation; return true; } }