| /* |
| * 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.util; |
| |
| import java.awt.Container; |
| import java.awt.Dimension; |
| import java.awt.Point; |
| import java.awt.Rectangle; |
| import javax.swing.JComponent; |
| import javax.swing.JScrollPane; |
| import org.netbeans.api.visual.action.WidgetAction; |
| import org.netbeans.api.visual.action.WidgetAction.State; |
| import org.netbeans.api.visual.action.WidgetAction.WidgetMouseWheelEvent; |
| import org.netbeans.api.visual.animator.SceneAnimator; |
| import org.netbeans.api.visual.widget.Scene; |
| import org.netbeans.api.visual.widget.Widget; |
| |
| /** |
| * |
| * @author Thomas Wuerthinger |
| */ |
| public class BoundedZoomAction extends WidgetAction.Adapter { |
| |
| private double minFactor = 0.0; |
| private double maxFactor = Double.MAX_VALUE; |
| private double zoomMultiplier; |
| private boolean useAnimator; |
| |
| public BoundedZoomAction(double zoomMultiplier, boolean useAnimator) { |
| this.zoomMultiplier = zoomMultiplier; |
| this.useAnimator = useAnimator; |
| } |
| |
| public double getMinFactor() { |
| return minFactor; |
| } |
| |
| public void setMinFactor(double d) { |
| minFactor = d; |
| } |
| |
| public double getMaxFactor() { |
| return maxFactor; |
| } |
| |
| public void setMaxFactor(double d) { |
| maxFactor = d; |
| } |
| |
| 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 mouseWheelMoved(Widget widget, WidgetMouseWheelEvent event) { |
| final Scene scene = widget.getScene(); |
| int amount = event.getWheelRotation(); |
| JScrollPane scrollPane = findScrollPane(scene.getView()); |
| Point viewPosition = null; |
| Point mouseLocation = scene.convertSceneToView(event.getPoint()); |
| int xOffset = 0; |
| int yOffset = 0; |
| Point oldViewPosition = null; |
| Rectangle bounds = new Rectangle(scene.getBounds()); |
| Dimension componentSize = new Dimension(scene.getView().getPreferredSize()); |
| |
| if (scrollPane != null) { |
| viewPosition = new Point(scrollPane.getViewport().getViewPosition()); |
| oldViewPosition = new Point(viewPosition); |
| xOffset = (mouseLocation.x - viewPosition.x); |
| yOffset = (mouseLocation.y - viewPosition.y); |
| viewPosition.x += xOffset; |
| viewPosition.y += yOffset; |
| } |
| |
| if (useAnimator) { |
| SceneAnimator sceneAnimator = scene.getSceneAnimator(); |
| synchronized (sceneAnimator) { |
| double zoom = sceneAnimator.isAnimatingZoomFactor() ? sceneAnimator.getTargetZoomFactor() : scene.getZoomFactor(); |
| while (amount > 0 && zoom / zoomMultiplier >= minFactor && zoom / zoomMultiplier <= maxFactor) { |
| zoom /= zoomMultiplier; |
| if (viewPosition != null) { |
| viewPosition.x /= zoomMultiplier; |
| viewPosition.y /= zoomMultiplier; |
| bounds.width /= zoomMultiplier; |
| bounds.height /= zoomMultiplier; |
| componentSize.width /= zoomMultiplier; |
| componentSize.height /= zoomMultiplier; |
| } |
| amount--; |
| } |
| while (amount < 0 && zoom * zoomMultiplier >= minFactor && zoom * zoomMultiplier <= maxFactor) { |
| zoom *= zoomMultiplier; |
| if (viewPosition != null) { |
| viewPosition.x *= zoomMultiplier; |
| viewPosition.y *= zoomMultiplier; |
| bounds.width *= zoomMultiplier; |
| bounds.height *= zoomMultiplier; |
| componentSize.width *= zoomMultiplier; |
| componentSize.height *= zoomMultiplier; |
| } |
| amount++; |
| } |
| sceneAnimator.animateZoomFactor(zoom); |
| } |
| } else { |
| double zoom = scene.getZoomFactor(); |
| while (amount > 0 && zoom / zoomMultiplier >= minFactor && zoom / zoomMultiplier <= maxFactor) { |
| zoom /= zoomMultiplier; |
| if (viewPosition != null) { |
| viewPosition.x /= zoomMultiplier; |
| viewPosition.y /= zoomMultiplier; |
| bounds.width /= zoomMultiplier; |
| bounds.height /= zoomMultiplier; |
| componentSize.width /= zoomMultiplier; |
| componentSize.height /= zoomMultiplier; |
| } |
| amount--; |
| } |
| while (amount < 0 && zoom * zoomMultiplier >= minFactor && zoom * zoomMultiplier <= maxFactor) { |
| zoom *= zoomMultiplier; |
| if (viewPosition != null) { |
| viewPosition.x *= zoomMultiplier; |
| viewPosition.y *= zoomMultiplier; |
| bounds.width *= zoomMultiplier; |
| bounds.height *= zoomMultiplier; |
| componentSize.width *= zoomMultiplier; |
| componentSize.height *= zoomMultiplier; |
| } |
| amount++; |
| } |
| scene.setZoomFactor(zoom); |
| } |
| |
| if (scrollPane != null) { |
| scene.validate(); // Call validate to update size of scene |
| Dimension size = scrollPane.getViewport().getExtentSize(); |
| viewPosition.x -= xOffset; |
| viewPosition.y -= yOffset; |
| scene.resolveBounds(scene.getLocation(), bounds); |
| scene.getView().setPreferredSize(componentSize); |
| scene.getView().revalidate(); |
| scene.getView().addNotify(); |
| scrollPane.getViewport().setViewPosition(viewPosition); |
| } |
| |
| return WidgetAction.State.CONSUMED; |
| } |
| } |