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/*
* Copyright (c) 2014 Google Inc. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.awt.image.BufferedImage;
import java.io.File;
import java.text.AttributedString;
import javax.imageio.ImageIO;
/**
* Manual test for:
* JDK-8057986: freetype code to get glyph outline does not handle initial control point properly
*
* Manual repro recipe:
* (cd test/java/awt/font/GlyphVector/ && javac GlyphVectorOutline.java && wget -q -O/tmp/msgothic.ttc https://browserlinux-jp.googlecode.com/files/msgothic.ttc && java GlyphVectorOutline /tmp/msgothic.ttc /tmp/katakana.png)
*
* Then examine the two rendered Japanese characters in the png file.
*
* Renders text to a PNG by
* 1. using the native Graphics2D#drawGlyphVector implementation
* 2. filling in the result of GlyphVector#getOutline
*
* Should be the same but is different for some CJK characters
* (e.g. Katakana character \u30AF).
*
* @author ikopylov@google.com (Igor Kopylov)
*/
public class GlyphVectorOutline {
public static void main(String[] args) throws Exception {
if (args.length != 2) {
throw new Error("Usage: java GlyphVectorOutline fontfile outputfile");
}
writeImage(new File(args[0]),
new File(args[1]),
"\u30AF");
}
public static void writeImage(File fontFile, File outputFile, String value) throws Exception {
BufferedImage image = new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, image.getWidth(), image.getHeight());
g.setColor(Color.BLACK);
Font font = Font.createFont(Font.TRUETYPE_FONT, fontFile);
font = font.deriveFont(Font.PLAIN, 72f);
FontRenderContext frc = new FontRenderContext(null, false, false);
GlyphVector gv = font.createGlyphVector(frc, value);
g.drawGlyphVector(gv, 10, 80);
g.fill(gv.getOutline(10, 180));
ImageIO.write(image, "png", outputFile);
}
private static void drawString(Graphics2D g, Font font, String value, float x, float y) {
AttributedString str = new AttributedString(value);
str.addAttribute(TextAttribute.FOREGROUND, Color.BLACK);
str.addAttribute(TextAttribute.FONT, font);
FontRenderContext frc = new FontRenderContext(null, true, true);
TextLayout layout = new LineBreakMeasurer(str.getIterator(), frc).nextLayout(Integer.MAX_VALUE);
layout.draw(g, x, y);
}
}
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