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.elementclass.canvas;
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14 import java.awt.geom.Rectangle2D;
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16 import org.simantics.g2d.canvas.ICanvasContext;
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17 import org.simantics.g2d.element.ElementUtils;
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18 import org.simantics.g2d.element.IElement;
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19 import org.simantics.g2d.element.SceneGraphNodeKey;
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20 import org.simantics.g2d.element.handler.SceneGraph;
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21 import org.simantics.scenegraph.Node;
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22 import org.simantics.scenegraph.g2d.G2DParentNode;
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23 import org.simantics.scenegraph.g2d.nodes.ClippingNode;
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24 import org.simantics.utils.datastructures.hints.IHintContext.Key;
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27 * An element handler that "paints" a canvas bound to an element.
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29 * Keys: CanvasClass.KEY_CANVAS
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31 * @author Toni Kalajainen
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33 public class CanvasPainter implements SceneGraph {
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35 private static final long serialVersionUID = -182067379834789790L;
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37 public static final CanvasPainter INSTANCE = new CanvasPainter();
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39 public static final Key SG_NODE = new SceneGraphNodeKey(Node.class, "SUB_SG_NODE");
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42 public void cleanup(IElement e) {
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43 ElementUtils.removePossibleNode(e, SG_NODE);
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47 public void init(IElement e, G2DParentNode parent) {
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48 ICanvasContext ctx = e.getHint(CanvasClass.KEY_CANVAS);
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50 ElementUtils.removePossibleNode(e, SG_NODE);
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54 ClippingNode node = ElementUtils.getOrCreateNode(e, parent, SG_NODE, ClippingNode.class);
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56 Rectangle2D bounds = ElementUtils.getElementBounds(e);
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57 node.setClip(bounds);
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