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/*
* Copyright (c) 2003, 2017, 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.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.geom.Line2D;
import java.awt.image.BufferedImage;
import java.awt.image.VolatileImage;
import static java.awt.image.BufferedImage.TYPE_INT_ARGB;
/**
* @test
* @bug 4917097 8019816
* @summary 1.4.1 REGRESSION: BasicStroke Dashes don't show when scale * line width = 1.0
* @run main/othervm -Dsun.java2d.uiScale=1 DashScaleMinWidth
*/
public final class DashScaleMinWidth {
public static void main(final String[] args) {
BufferedImage img = new BufferedImage(200, 40, TYPE_INT_ARGB);
draw(img);
validate(img);
if (GraphicsEnvironment.isHeadless()) {
return;
}
GraphicsConfiguration gc =
GraphicsEnvironment.getLocalGraphicsEnvironment()
.getDefaultScreenDevice().getDefaultConfiguration();
VolatileImage vi = gc.createCompatibleVolatileImage(200, 40);
BufferedImage snapshot;
int attempt = 0;
while (true) {
if (++attempt > 10) {
throw new RuntimeException("Too many attempts: " + attempt);
}
vi.validate(gc);
draw(vi);
snapshot = vi.getSnapshot();
if (!vi.contentsLost()) {
break;
}
}
validate(snapshot);
}
private static void draw(final Image img) {
float[] dashes = {200.0f, 200.0f};
BasicStroke bs = new BasicStroke(20.0f,
BasicStroke.CAP_BUTT,
BasicStroke.JOIN_MITER,
1.0f,
dashes,
0.0f);
Graphics2D g = (Graphics2D) img.getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, 200, 40);
Line2D line = new Line2D.Double(400, 400, 3600, 400);
g.setColor(Color.BLACK);
g.scale(0.05, 0.05);
g.setStroke(bs);
g.draw(line);
g.dispose();
}
private static void validate(final BufferedImage img) {
int white = Color.white.getRGB();
int point = img.getRGB(35, 20); // point in the gap
if (point != white) {
throw new RuntimeException("Line should be dashed");
}
}
}
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