| /* |
| * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| package com.sun.hotspot.igv.view; |
| |
| import java.awt.Container; |
| import java.awt.Dimension; |
| import java.awt.Point; |
| import org.netbeans.api.visual.widget.Scene; |
| import org.netbeans.api.visual.widget.Widget; |
| import org.netbeans.api.visual.action.WidgetAction; |
| |
| import java.awt.event.MouseEvent; |
| import javax.swing.JComponent; |
| import javax.swing.JScrollPane; |
| import javax.swing.SwingUtilities; |
| |
| /** |
| * @author David Kaspar |
| * @author Thomas Wuerthinger |
| */ |
| public class ExtendedPanAction extends WidgetAction.LockedAdapter { |
| |
| private Scene scene; |
| private JScrollPane scrollPane; |
| private Point lastLocation; |
| |
| protected boolean isLocked() { |
| return scrollPane != null; |
| } |
| |
| @Override |
| public State mousePressed(Widget widget, WidgetMouseEvent event) { |
| if (event.getButton() == MouseEvent.BUTTON2 || event.getButton() == MouseEvent.BUTTON1 && ((event.getModifiers() & MouseEvent.CTRL_MASK) != 0)) { |
| scene = widget.getScene(); |
| scrollPane = findScrollPane(scene.getView()); |
| if (scrollPane != null) { |
| lastLocation = scene.convertSceneToView(widget.convertLocalToScene(event.getPoint())); |
| SwingUtilities.convertPointToScreen(lastLocation, scrollPane.getViewport().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, scrollPane.getViewport().getView()); |
| Point viewPosition = scrollPane.getViewport().getViewPosition(); |
| Dimension viewSize = scrollPane.getViewport().getViewSize(); |
| Dimension viewPortSize = scrollPane.getViewport().getSize(); |
| |
| int xOffset = lastLocation.x - newLocation.x; |
| int yOffset = lastLocation.y - newLocation.y; |
| |
| if (viewPortSize.height == viewSize.height) { |
| yOffset = 0; |
| } |
| |
| if (viewPortSize.width == viewSize.width) { |
| xOffset = 0; |
| } |
| |
| if (xOffset == 0 && yOffset == 0) { |
| return true; |
| } |
| viewPosition = new Point(viewPosition.x + xOffset, viewPosition.y + yOffset); |
| viewPosition.x = Math.max(viewPosition.x, 0); |
| viewPosition.y = Math.max(viewPosition.y, 0); |
| viewPosition.x = Math.min(viewPosition.x, scrollPane.getViewport().getView().getSize().width - scrollPane.getViewport().getSize().width); |
| viewPosition.y = Math.min(viewPosition.y, scrollPane.getViewport().getView().getSize().height - scrollPane.getViewport().getSize().height); |
| |
| scrollPane.getViewport().setViewPosition(viewPosition); |
| scrollPane.getViewport().getView().repaint(); |
| lastLocation = newLocation; |
| return true; |
| } |
| } |