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/*
* 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);
}
}
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