| /* |
| * Copyright (c) 2020, Oracle and/or its affiliates. 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. |
| */ |
| |
| /* |
| * @test MirrorTest |
| * @bug 8255387 |
| * @summary Mirrored characters should be drawn correctly |
| * @run main MirrorTest |
| */ |
| |
| import java.awt.Color; |
| import java.awt.Font; |
| import java.awt.FontMetrics; |
| import java.awt.Graphics2D; |
| import java.awt.GraphicsEnvironment; |
| import java.awt.Point; |
| import java.awt.RenderingHints; |
| import java.awt.geom.AffineTransform; |
| import java.awt.image.BufferedImage; |
| |
| public class MirrorTest { |
| static String target = "\u3042"; |
| static final int SIZE = 50; |
| static final int SHIFT = 20; |
| static final int LIMIT = 5; |
| |
| static Point getCenterOfGravity(BufferedImage img) { |
| int count = 0; |
| int sx = 0; |
| int sy = 0; |
| for (int y = 0; y < SIZE; y++) { |
| for (int x = 0; x < SIZE; x++) { |
| int c = img.getRGB(x, y) & 0xFFFFFF; |
| if (c == 0) { |
| count++; |
| sx += x; |
| sy += y; |
| } |
| } |
| } |
| if (count == 0) { |
| return null; |
| } else { |
| return new Point(sx/count, sy/count); |
| } |
| } |
| |
| static BufferedImage drawNormal(Font font) { |
| BufferedImage image = new BufferedImage(SIZE, SIZE, |
| BufferedImage.TYPE_BYTE_BINARY); |
| Graphics2D g2d = image.createGraphics(); |
| g2d.setColor(Color.white); |
| g2d.fillRect(0, 0, image.getWidth(), image.getHeight()); |
| g2d.setColor(Color.black); |
| //Set antialias on not to use embedded bitmap for reference |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
| RenderingHints.VALUE_ANTIALIAS_ON); |
| |
| g2d.setFont(font); |
| FontMetrics fm = g2d.getFontMetrics(); |
| g2d.drawString(target, SHIFT, SHIFT+fm.getAscent()); |
| g2d.dispose(); |
| return image; |
| } |
| |
| static BufferedImage drawVerticalMirror(Font font) { |
| BufferedImage image = new BufferedImage(SIZE, SIZE, |
| BufferedImage.TYPE_BYTE_BINARY); |
| Graphics2D g2d = image.createGraphics(); |
| g2d.setColor(Color.white); |
| g2d.fillRect(0, 0, image.getWidth(), image.getHeight()); |
| g2d.setColor(Color.black); |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
| RenderingHints.VALUE_ANTIALIAS_OFF); |
| |
| AffineTransform base = g2d.getTransform(); |
| AffineTransform trans = new AffineTransform(1.0, 0, 0, -1.0, 0, 0); |
| trans.concatenate(base); |
| g2d.setTransform(trans); |
| |
| g2d.setFont(font); |
| FontMetrics fm = g2d.getFontMetrics(); |
| g2d.drawString(target, SHIFT, SHIFT-image.getHeight()+fm.getAscent()); |
| g2d.dispose(); |
| return image; |
| } |
| |
| static BufferedImage drawHorizontalMirror(Font font) { |
| BufferedImage image = new BufferedImage(SIZE, SIZE, |
| BufferedImage.TYPE_BYTE_BINARY); |
| Graphics2D g2d = image.createGraphics(); |
| g2d.setColor(Color.white); |
| g2d.fillRect(0, 0, image.getWidth(), image.getHeight()); |
| g2d.setColor(Color.black); |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
| RenderingHints.VALUE_ANTIALIAS_OFF); |
| |
| AffineTransform base = g2d.getTransform(); |
| AffineTransform trans = new AffineTransform(-1.0, 0, 0, 1.0, 0, 0); |
| trans.concatenate(base); |
| g2d.setTransform(trans); |
| |
| g2d.setFont(font); |
| FontMetrics fm = g2d.getFontMetrics(); |
| g2d.drawString(target, SHIFT-image.getWidth(), SHIFT+fm.getAscent()); |
| g2d.dispose(); |
| return image; |
| } |
| |
| public static void main(String[] args) { |
| GraphicsEnvironment ge = |
| GraphicsEnvironment.getLocalGraphicsEnvironment(); |
| Font fonts[] = ge.getAllFonts(); |
| |
| for (Font font: fonts) { |
| if (!font.canDisplay(target.charAt(0))) { |
| continue; |
| } |
| font = font.deriveFont(12.0f); |
| BufferedImage img1 = drawNormal(font); |
| BufferedImage img2 = drawVerticalMirror(font); |
| BufferedImage img3 = drawHorizontalMirror(font); |
| Point p1 = getCenterOfGravity(img1); |
| Point p2 = getCenterOfGravity(img2); |
| Point p3 = getCenterOfGravity(img3); |
| if (p1 == null || p2 == null || p3 == null ) { |
| continue; |
| } |
| p2.y = SIZE - p2.y - 2; // Back from vertical mirror |
| p3.x = SIZE - p3.x - 2; // Back from horizontal mirror |
| |
| if (Math.abs(p1.x - p2.x) > LIMIT || |
| Math.abs(p1.y - p2.y) > LIMIT || |
| Math.abs(p1.x - p3.x) > LIMIT || |
| Math.abs(p1.y - p3.y) > LIMIT) { |
| System.out.println("Error: "+p1+","+p2+","+p3); |
| throw new RuntimeException( |
| "Incorrect mirrored character with " + font); |
| } |
| } |
| } |
| } |
| |