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author | Dana Dahlstrom <dahlstrom@google.com> | 2020-01-30 12:00:00 -0800 |
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committer | Dana Dahlstrom <dahlstrom@google.com> | 2020-02-10 12:00:00 -0800 |
commit | 48adcc45b3935045b1ff2013ecfd05e6f3bdb1cc (patch) | |
tree | 7e47ce0d2a402a9e765541e514aa969ef8325928 /test/java/awt/BasicStroke/DashZeroWidth.java | |
parent | e5752ae568d3c43497ae4f33d731fadf4ef165d4 (diff) | |
parent | 5b42bd7c94ffa67028549cac0264d79e24b2febd (diff) | |
download | jdk8u_jdk-48adcc45b3935045b1ff2013ecfd05e6f3bdb1cc.tar.gz |
Merge tag jb8u232-b1638.6
Change-Id: I5b42bd7c94ffa67028549cac0264d79e24b2febd
Diffstat (limited to 'test/java/awt/BasicStroke/DashZeroWidth.java')
-rw-r--r-- | test/java/awt/BasicStroke/DashZeroWidth.java | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/test/java/awt/BasicStroke/DashZeroWidth.java b/test/java/awt/BasicStroke/DashZeroWidth.java new file mode 100644 index 0000000000..fb0f51ce4a --- /dev/null +++ b/test/java/awt/BasicStroke/DashZeroWidth.java @@ -0,0 +1,98 @@ +/* + * 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 4779211 8019816 + * @summary REGRESSION: 1.4 Dashed lines disappear if BasicStroke width=0.0 + * @run main/othervm -Dsun.java2d.uiScale=1 DashZeroWidth + */ +public final class DashZeroWidth { + + 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 = {10.0f, 10.0f}; + BasicStroke bs = new BasicStroke(0.0f, BasicStroke.CAP_BUTT, + BasicStroke.JOIN_BEVEL, 10.0f, dashes, + 0.0f); + Graphics2D g = (Graphics2D) img.getGraphics(); + g.setColor(Color.WHITE); + g.fillRect(0, 0, 200, 40); + Line2D line = new Line2D.Double(20, 20, 180, 20); + g.setColor(Color.BLACK); + g.setStroke(bs); + g.draw(line); + g.dispose(); + } + + private static void validate(final BufferedImage img) { + int black = Color.black.getRGB(); + int white = Color.white.getRGB(); + int pointB = img.getRGB(25, 20); // point on the dash + int pointW = img.getRGB(35, 20); // point in the gap + if (pointB != black || pointW != white) { + throw new RuntimeException("Line should be visible and dashed"); + } + } +} |