1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.g2d.participant;
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14 import java.awt.BasicStroke;
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15 import java.awt.Color;
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16 import java.awt.Paint;
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17 import java.awt.Shape;
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18 import java.awt.Stroke;
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19 import java.awt.geom.AffineTransform;
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20 import java.awt.geom.Path2D;
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21 import java.util.Map;
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23 import org.simantics.g2d.canvas.SGDesignation;
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24 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;
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25 import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;
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26 import org.simantics.g2d.canvas.impl.SGNodeReflection.SGCleanup;
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27 import org.simantics.g2d.canvas.impl.SGNodeReflection.SGInit;
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28 import org.simantics.g2d.participant.MouseUtil.MouseInfo;
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29 import org.simantics.scenegraph.g2d.G2DParentNode;
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30 import org.simantics.scenegraph.g2d.events.MouseEvent;
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31 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;
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32 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonPressedEvent;
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33 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonReleasedEvent;
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34 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseMovedEvent;
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35 import org.simantics.scenegraph.g2d.nodes.InstancingShapeNode;
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36 import org.simantics.utils.datastructures.hints.IHintContext.Key;
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37 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
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40 * Paints mouse cursors in a multi-mouse setup.
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42 * @author Toni Kalajainen
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43 * @author Tuukka Lehtonen
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45 public class PointerPainter extends AbstractCanvasParticipant {
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48 * Key for the hint that determines whether cursors are painter or not.
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50 public static final Key KEY_PAINT_POINTER = new KeyOf(Boolean.class);
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52 public static final int CURSOR_PAINT_Z_ORDER = 5000;
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54 private final static Stroke CURSOR_STROKE = new BasicStroke(1.0f);
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56 @Dependency MouseUtil monitor;
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58 InstancingShapeNode node;
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62 public PointerPainter() {
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63 Path2D p = new Path2D.Double();
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72 @SGInit(designation = SGDesignation.CONTROL)
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73 public void init(G2DParentNode parent) {
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74 node = parent.addNode("pointers", InstancingShapeNode.class);
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75 node.setZIndex(CURSOR_PAINT_Z_ORDER);
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76 node.setShape(pointer);
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77 node.setStroke(CURSOR_STROKE);
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78 node.setFill(false);
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79 node.setScaleStroke(false);
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80 node.setScaleShape(false);
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84 public void cleanup() {
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89 public boolean isCursorEnabled() {
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90 Boolean pp = getHint(KEY_PAINT_POINTER);
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91 return Boolean.TRUE.equals(pp);
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94 @EventHandler(priority = Integer.MAX_VALUE)
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95 public boolean handleMouseEvent(MouseEvent e) {
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96 if (!isCursorEnabled())
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99 assertDependencies();
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101 if (e instanceof MouseMovedEvent || e instanceof MouseButtonPressedEvent
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102 || e instanceof MouseButtonReleasedEvent) {
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109 private void updateNode() {
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110 Map<Integer, MouseInfo> miceInfo = monitor.getMiceInfo();
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112 AffineTransform[] transforms = new AffineTransform[miceInfo.size()];
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113 Paint[] paints = new Paint[miceInfo.size()];
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116 for (MouseInfo mi : miceInfo.values()) {
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118 if ((mi.buttons & 1) > 0) color |= 0xff;
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119 if ((mi.buttons & 2) > 0) color |= 0xff00;
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120 if ((mi.buttons & 4) > 0) color |= 0xff0000;
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122 transforms[i] = AffineTransform.getTranslateInstance(mi.controlPosition.getX(), mi.controlPosition.getY());
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123 paints[i] = new Color(color);
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128 node.setInstances(transforms, paints);
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