bundles/org.simantics.graphviz/src/org/simantics/graphviz/internal/xdot/Text.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.graphviz.internal.xdot;
  13
  14 import java.awt.Graphics2D;
  15 import java.awt.RenderingHints;
  16 import java.awt.geom.AffineTransform;
  17 import java.awt.geom.Rectangle2D;
  18
  19 public class Text implements DrawCommand {
  20
  21         double x;
  22         double y;
  23         double j;
  24         double w;
  25         String text;
  26
  27         public Text(double x, double y, int j, double w, String text) {
  28                 this.x = x;
  29                 this.y = -y;
  30                 this.j = j;
  31                 this.w = w;
  32                 this.text = text;
  33         }
  34
  35         @Override
  36         public void draw(Graphics2D g) {
  37             double lx;
  38
  39             if(j == -1)
  40             lx = x;
  41         else if(j == 0)
  42             lx = x - 0.5*w;
  43         else if(j == 1)
  44             lx = x - w;
  45         else
  46             lx = x;
  47         //g.draw(new Line2D.Double(lx, y, lx+w, y));
  48             g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
  49                 RenderingHints.VALUE_FRACTIONALMETRICS_ON);
  50             Rectangle2D rect = g.getFont().getStringBounds(text, g.getFontRenderContext());
  51             AffineTransform oldTransform = g.getTransform();
  52             g.translate(lx, y);
  53             double scale = w / rect.getWidth();
  54             g.scale(scale, scale);
  55                 g.drawString(text, 0.0f, 0.0f);
  56                 g.setTransform(oldTransform);
  57         }
  58
  59 }