| /* |
| * 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.geom.AffineTransform; |
| import java.awt.geom.Path2D; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.Raster; |
| import java.io.File; |
| import java.io.IOException; |
| import javax.imageio.ImageIO; |
| |
| /** |
| * Scaled Line Clipping rendering test |
| * |
| * @test |
| * @summary verify that scaled line is properly rendered |
| * @bug 8210335 |
| */ |
| public class ScaleClipTest { |
| |
| static final boolean SAVE_IMAGE = false; |
| static final int SIZE = 50; |
| |
| enum SCALE_MODE { |
| ORTHO, |
| NON_ORTHO, |
| COMPLEX |
| }; |
| |
| public static void main(String[] args) { |
| |
| // First display which renderer is tested: |
| // JDK9 only: |
| System.setProperty("sun.java2d.renderer.verbose", "true"); |
| |
| System.out.println("ScaleClipTest: size = " + SIZE); |
| |
| final BufferedImage image = new BufferedImage(SIZE, SIZE, BufferedImage.TYPE_INT_ARGB); |
| |
| boolean fail = false; |
| |
| // testNegativeScale: |
| for (SCALE_MODE mode : SCALE_MODE.values()) { |
| try { |
| testNegativeScale(image, mode); |
| } catch (IllegalStateException ise) { |
| System.err.println("testNegativeScale[" + mode + "] failed:"); |
| ise.printStackTrace(); |
| fail = true; |
| } |
| } |
| |
| // testMarginScale: |
| for (SCALE_MODE mode : SCALE_MODE.values()) { |
| try { |
| testMarginScale(image, mode); |
| } catch (IllegalStateException ise) { |
| System.err.println("testMarginScale[" + mode + "] failed:"); |
| ise.printStackTrace(); |
| fail = true; |
| } |
| } |
| |
| // Fail at the end: |
| if (fail) { |
| throw new RuntimeException("ScaleClipTest has failures."); |
| } |
| } |
| |
| private static void testNegativeScale(final BufferedImage image, final SCALE_MODE mode) { |
| |
| final Graphics2D g2d = (Graphics2D) image.getGraphics(); |
| try { |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); |
| g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); |
| g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE); |
| |
| g2d.setBackground(Color.WHITE); |
| g2d.clearRect(0, 0, SIZE, SIZE); |
| |
| g2d.setColor(Color.BLACK); |
| |
| // Bug in TransformingPathConsumer2D.adjustClipScale() |
| // non ortho scale only |
| final double scale = -1.0; |
| |
| final AffineTransform at; |
| switch (mode) { |
| default: |
| case ORTHO: |
| at = AffineTransform.getScaleInstance(scale, scale); |
| break; |
| case NON_ORTHO: |
| at = AffineTransform.getScaleInstance(scale, scale + 1e-5); |
| break; |
| case COMPLEX: |
| at = AffineTransform.getScaleInstance(scale, scale); |
| at.concatenate(AffineTransform.getShearInstance(1e-4, 1e-4)); |
| break; |
| } |
| g2d.setTransform(at); |
| |
| // Set cap/join to reduce clip margin: |
| g2d.setStroke(new BasicStroke(2f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL)); |
| |
| final Path2D p = new Path2D.Double(); |
| p.moveTo(scale * 10, scale * 10); |
| p.lineTo(scale * (SIZE - 10), scale * (SIZE - 10)); |
| |
| g2d.draw(p); |
| |
| if (SAVE_IMAGE) { |
| try { |
| final File file = new File("ScaleClipTest-testNegativeScale-" + mode + ".png"); |
| |
| System.out.println("Writing file: " + file.getAbsolutePath()); |
| ImageIO.write(image, "PNG", file); |
| } catch (IOException ioe) { |
| ioe.printStackTrace(); |
| } |
| } |
| |
| // Check image: |
| // 25, 25 = black |
| checkPixel(image.getData(), 25, 25, Color.BLACK.getRGB()); |
| |
| } finally { |
| g2d.dispose(); |
| } |
| } |
| |
| private static void testMarginScale(final BufferedImage image, final SCALE_MODE mode) { |
| |
| final Graphics2D g2d = (Graphics2D) image.getGraphics(); |
| try { |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); |
| g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); |
| g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE); |
| |
| g2d.setBackground(Color.WHITE); |
| g2d.clearRect(0, 0, SIZE, SIZE); |
| |
| g2d.setColor(Color.BLACK); |
| |
| // Bug in Stroker.init() |
| // ortho scale only: scale used twice ! |
| final double scale = 1e-2; |
| |
| final AffineTransform at; |
| switch (mode) { |
| default: |
| case ORTHO: |
| at = AffineTransform.getScaleInstance(scale, scale); |
| break; |
| case NON_ORTHO: |
| at = AffineTransform.getScaleInstance(scale, scale + 1e-5); |
| break; |
| case COMPLEX: |
| at = AffineTransform.getScaleInstance(scale, scale); |
| at.concatenate(AffineTransform.getShearInstance(1e-4, 1e-4)); |
| break; |
| } |
| g2d.setTransform(at); |
| |
| final double invScale = 1.0 / scale; |
| |
| // Set cap/join to reduce clip margin: |
| final float w = (float) (3.0 * invScale); |
| g2d.setStroke(new BasicStroke(w, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL)); |
| |
| final Path2D p = new Path2D.Double(); |
| p.moveTo(invScale * -0.5, invScale * 10); |
| p.lineTo(invScale * -0.5, invScale * (SIZE - 10)); |
| |
| g2d.draw(p); |
| |
| if (SAVE_IMAGE) { |
| try { |
| final File file = new File("ScaleClipTest-testMarginScale-" + mode + ".png"); |
| |
| System.out.println("Writing file: " + file.getAbsolutePath()); |
| ImageIO.write(image, "PNG", file); |
| } catch (IOException ioe) { |
| ioe.printStackTrace(); |
| } |
| } |
| |
| // Check image: |
| // 0, 25 = black |
| checkPixel(image.getData(), 0, 25, Color.BLACK.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); |
| } |
| } |
| |
| } |