| /* |
| * Copyright (c) 2018, 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. |
| */ |
| |
| |
| import java.awt.BasicStroke; |
| import java.awt.Color; |
| import java.awt.Graphics2D; |
| import java.awt.RenderingHints; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.Raster; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Arrays; |
| import javax.imageio.ImageIO; |
| |
| /** |
| * Simple Dashed Rect rendering test |
| * |
| * @test |
| * @summary verify that dashed rectangle is properly rasterized |
| * @bug 8202580 |
| */ |
| public class DashedRectTest { |
| |
| static final boolean SAVE_IMAGE = false; |
| |
| private final static int N = 10; |
| |
| final static float DASH_LEN = 3.0f; |
| final static float DASH_PH = 5000f; |
| |
| final static int MAX = 100; |
| |
| public static void main(String[] args) { |
| |
| final int size = 200; |
| |
| // First display which renderer is tested: |
| // JDK9 only: |
| System.setProperty("sun.java2d.renderer.verbose", "true"); |
| |
| System.out.println("DashedRectClipTest: size = " + size); |
| |
| final BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB); |
| |
| final Graphics2D g2d = (Graphics2D) image.getGraphics(); |
| try { |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF); |
| g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); |
| g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE); |
| |
| g2d.setClip(0, 0, size, size); |
| |
| g2d.setBackground(Color.WHITE); |
| g2d.clearRect(0, 0, size, size); |
| |
| // Corrupt Marlin Dasher.dash cached array: |
| g2d.setColor(Color.RED); |
| g2d.setStroke(createBadStroke()); |
| g2d.drawRect(20, 20, 50, 50); |
| |
| g2d.setStroke(createStroke()); |
| |
| g2d.setColor(Color.BLUE); |
| |
| for (int i = 0; i < N; i++) { |
| final long start = System.nanoTime(); |
| |
| g2d.drawRect(5, 5, MAX, MAX); |
| |
| final long time = System.nanoTime() - start; |
| |
| System.out.println("paint: duration= " + (1e-6 * time) + " ms."); |
| } |
| |
| if (SAVE_IMAGE) { |
| try { |
| final File file = new File("DashedRectClipTest-MAX-" + MAX + "-dashed.png"); |
| |
| System.out.println("Writing file: " + file.getAbsolutePath()); |
| ImageIO.write(image, "PNG", file); |
| } catch (IOException ex) { |
| ex.printStackTrace(); |
| } |
| } |
| |
| // Check image on few pixels: |
| final Raster raster = image.getData(); |
| |
| // 10, 5 = blue |
| checkPixel(raster, 10, 5, Color.BLUE.getRGB()); |
| |
| } finally { |
| g2d.dispose(); |
| } |
| } |
| |
| private static void checkPixel(final Raster raster, |
| final int x, final int y, |
| final int expected) { |
| |
| final int[] rgb = (int[]) raster.getDataElements(x, y, null); |
| |
| if (rgb[0] != expected) { |
| throw new IllegalStateException("bad pixel at (" + x + ", " + y |
| + ") = " + rgb[0] + " expected: " + expected); |
| } |
| } |
| |
| private static BasicStroke createStroke() { |
| return new BasicStroke(2f, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_MITER, 10.0f, |
| new float[]{DASH_LEN}, DASH_PH) { |
| |
| }; |
| } |
| |
| private static BasicStroke createBadStroke() { |
| final float[] dash = new float[100]; |
| Arrays.fill(dash, 19.333f); |
| |
| return new BasicStroke(2f, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_MITER, 10.0f, dash, DASH_PH); |
| } |
| |
| } |