--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/java2d/marlin/ScaleClipTest.java Mon Sep 24 21:23:37 2018 +0200
@@ -0,0 +1,232 @@
+/*
+ * 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);
+ }
+ }
+
+}