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.diagram.elements;
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14 import java.awt.Font;
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15 import java.awt.font.FontRenderContext;
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16 import java.awt.font.TextLayout;
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17 import java.awt.geom.AffineTransform;
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18 import java.awt.geom.Rectangle2D;
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20 import org.simantics.g2d.element.ElementHints;
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21 import org.simantics.g2d.element.ElementUtils;
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22 import org.simantics.g2d.element.IElement;
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23 import org.simantics.g2d.element.handler.InternalSize;
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24 import org.simantics.g2d.utils.Alignment;
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27 * ElementHandler for text elements
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28 * In-line editing supported.
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30 * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
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32 public class TextElementHandler extends TextElementNoBounds implements InternalSize {
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34 private static final long serialVersionUID = 2560598115620905271L;
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36 public static final TextElementHandler INSTANCE = new TextElementHandler();
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38 public TextElementHandler() {
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42 public TextElementHandler(double originX, double originY, Alignment horizontalAlignment) {
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43 super(originX, originY, horizontalAlignment);
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46 public TextElementHandler(double originX, double originY, Alignment horizontalAlignment, double borderWidth) {
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47 super(originX, originY, horizontalAlignment, borderWidth);
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50 public TextElementHandler(double originX, double originY, Alignment horizontalAlignment, double borderWidth,
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51 double paddingX, double paddingY, boolean editable) {
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52 super(originX, originY, horizontalAlignment, borderWidth, paddingX, paddingY, editable);
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57 public Rectangle2D getBounds(IElement e, Rectangle2D size) {
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58 return calculateBounds(e, size, horizontalAlignment, SCALE, paddingX, paddingY);
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61 public static Rectangle2D calculateBounds(
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64 Alignment horizontalAlignment,
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69 TextNode node = (TextNode) e.getHint(SG_NODE);
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70 Rectangle2D b = e.getHint(ElementHints.KEY_BOUNDS);
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73 size = new Rectangle2D.Double();
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75 size.setRect(node.getBoundsInLocal());
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76 else if(b != null && ElementUtils.getHintOrDefault(e, ElementHints.KEY_RESIZABLE, false))
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79 String text = e.getHint(ElementHints.KEY_TEXT);
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80 Font font = e.getHint(ElementHints.KEY_FONT);
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81 if(text == null || font == null)
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82 size.setFrame(0, 0, 0, 0);
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84 FontRenderContext FRC = new FontRenderContext(new AffineTransform(), true, true);
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85 TextLayout tl = new TextLayout(text, font, FRC);
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86 Rectangle2D bounds = tl.getLogicalHighlightShape(0, text.length()).getBounds2D();
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88 getAlignedXCoordinate(bounds, horizontalAlignment) * scale - paddingX,
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89 bounds.getY() * scale -paddingY,
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90 bounds.getWidth()* scale + paddingX + paddingX,
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91 bounds.getHeight()* scale + paddingY + paddingY);
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99 public static double getAlignedXCoordinate(Rectangle2D bounds, Alignment horizontalAlignment) {
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100 if(horizontalAlignment == Alignment.CENTER) {
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101 return bounds.getX() - bounds.getWidth() / 2;
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102 } else if(horizontalAlignment == Alignment.TRAILING) {
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103 return - bounds.getWidth();
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105 return bounds.getX();
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