AttributedCharacterIterator.java

/*

   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */
package org.apache.batik.svggen;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.font.TextAttribute;
import java.text.AttributedString;


/**
 * This test validates the convertion of Java 2D AffineTransform into SVG
 * Shapes.
 *
 * @author <a href="mailto:cjolif@ilog.fr">Christophe Jolif</a>
 * @author <a href="mailto:vhardy@eng.sun.com">Vincent Hardy</a>
 * @version $Id$
 */
public class AttributedCharacterIterator implements Painter {
    public void paint(Graphics2D g) {
        String fontName = "Arial";
        int fontSize = 15;

        String text = "Attributed Strings are fun !";
        AttributedString styledText = new AttributedString(text);

        //
        // Set font family for the whole string
        //
        Font font = new Font(fontName, Font.PLAIN, fontSize);
        styledText.addAttribute(TextAttribute.FAMILY, font.getFamily());
        styledText.addAttribute(TextAttribute.SIZE, new Float(font.getSize()));
        styledText.addAttribute(TextAttribute.FOREGROUND, Color.black);

        //
        // Set font style attributes for different part of the string
        //

        // "Attributed" is in Bold
        styledText.addAttribute(TextAttribute.WEIGHT, 
                                TextAttribute.WEIGHT_BOLD, 0, 10);

        // "String" is italic
        styledText.addAttribute(TextAttribute.POSTURE, 
                                TextAttribute.POSTURE_OBLIQUE, 11, 18);

        // fun is Bold and underlined and strike through
        styledText.addAttribute(TextAttribute.UNDERLINE, 
                                TextAttribute.UNDERLINE_ON, 23, 28);
        styledText.addAttribute(TextAttribute.STRIKETHROUGH, 
                                TextAttribute.STRIKETHROUGH_ON, 23, 28);

        // styledText.addAttribute(TextAttribute.SWAP_COLORS, 
        //                         TextAttribute.SWAP_COLORS_ON);

        /*TextLayout aLayout = new TextLayout("A", font, frc);
          Shape aShape = aLayout.getOutline(null);

          ShapeGraphicAttribute aReplacement = new ShapeGraphicAttribute(aShape, GraphicAttribute.ROMAN_BASELINE, true);
          styledText.addAttribute(TextAttribute.CHAR_REPLACEMENT, 
                                  aReplacement, 0, 1);


          // Create a BufferedImage to decorate the Shape
          {
          TextLayout aLayout = new TextLayout("A", font, frc);
          Shape aShape = aLayout.getOutline(null);
          Rectangle bounds = aShape.getBounds();

          int blurWidth = 6;
          BufferedImage image = new BufferedImage(bounds.width + blurWidth*4, bounds.height + blurWidth*4,
          BufferedImage.TYPE_INT_ARGB);
          Graphics2D g2 = image.createGraphics();
          int w = image.getWidth(), h = image.getHeight();
          g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
          g2.setPaint(Color.black);
          g2.translate(-bounds.x + (w - bounds.width)/2, -bounds.y + (h - bounds.height)/2);
          g2.fill(aShape);
          g2.setStroke(new BasicStroke(blurWidth/2));
          g2.draw(aShape);
          g2.dispose();

          float k[] = new float[blurWidth*blurWidth];
          for(int i=0; i<k.length; i++) k[i] = 1/(float)k.length;
          Kernel kernel = new Kernel(blurWidth, blurWidth, k);
          ConvolveOp blur = new ConvolveOp(kernel);
          image = blur.filter(image, null);
          g2 = image.createGraphics();
          g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
          g2.translate(-bounds.x + (w - bounds.width)/2, -bounds.y + (h - bounds.height)/2);
          g2.setComposite(AlphaComposite.Clear);
          g2.fill(aShape);

          image = image.getSubimage(blurWidth, blurWidth, image.getWidth() - 2*blurWidth, image.getHeight() - 2*blurWidth);

          ImageGraphicAttribute aImageReplacement = new ImageGraphicAttribute(image, GraphicAttribute.ROMAN_BASELINE, blurWidth,
          blurWidth + bounds.height);
          styledText.addAttribute(TextAttribute.CHAR_REPLACEMENT, aImageReplacement, 0, 1);
          }
        */

        //
        // Set text color
        //

        // "Attributed" is in dard red
        styledText.addAttribute(TextAttribute.FOREGROUND, 
                                new Color(128, 0, 0), 0, 10);

        // "String" is blue
        styledText.addAttribute(TextAttribute.FOREGROUND, 
                                new Color(70, 107, 132), 11, 18);

        // "fun" is yellow
        styledText.addAttribute(TextAttribute.FOREGROUND, 
                                new Color(236, 214, 70), 23, 28);

        java.text.AttributedCharacterIterator iter = styledText.getIterator();
        g.drawString(iter, 10, 100);


        // "fun" is now yellow on a blue background
        styledText.addAttribute(TextAttribute.BACKGROUND, 
                                new Color(70, 107, 132), 23, 28);

        iter = styledText.getIterator();
        /*TextLayout layout = new TextLayout(iter, frc);

        Rectangle bounds = layout.getBounds().getBounds();
        bounds.width += 50;
        bounds.height += 50;

        layout.draw(g, 25, layout.getAscent() + 25);*/
        g.drawString(iter, 10, 130);
    }
}