98 lines
3.4 KiB
Java
98 lines
3.4 KiB
Java
/*
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* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @key headful
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* @bug 8266159
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* @summary Test to detect regression in pixel drawing.
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* A small circle is drawn and boundary pixels are compared to expected pixels.
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* Note : this test is specifically written for uiScale=1.0
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* @run main/othervm -Dsun.java2d.uiScale=1.0 DrawOvalTest
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*/
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import javax.imageio.ImageIO;
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import java.awt.Color;
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import java.awt.Graphics2D;
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import java.awt.GraphicsConfiguration;
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import java.awt.GraphicsEnvironment;
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import java.awt.Transparency;
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import java.awt.image.BufferedImage;
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import java.awt.image.VolatileImage;
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import java.io.File;
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import java.io.IOException;
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public class DrawOvalTest {
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public static void main(String[] args) throws IOException {
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GraphicsConfiguration gc = GraphicsEnvironment.getLocalGraphicsEnvironment()
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.getDefaultScreenDevice().getDefaultConfiguration();
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VolatileImage vi = gc.createCompatibleVolatileImage(10, 10, Transparency.TRANSLUCENT);
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// Draw test rendering sequence
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BufferedImage snapshot = null;
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Graphics2D g2 = vi.createGraphics();
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do {
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vi.validate(gc);
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render(g2);
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snapshot = vi.getSnapshot();
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} while (vi.contentsLost());
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// Pixel color sequence expected after test rendering is complete
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// Blue color = -16776961
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// Red color = -65536
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int sequence[] = {
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-16776961,
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-16776961,
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-16776961,
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-65536,
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-65536,
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-65536,
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-65536,
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-16776961,
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-16776961,
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-16776961
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};
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// Test the color of pixels at the image boundary
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for (int i = 0; i < snapshot.getWidth(); i++) {
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// Test first row, last row, first column and last column
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if ( snapshot.getRGB(i, 0) != sequence[i] ||
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snapshot.getRGB(i, 9) != sequence[i] ||
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snapshot.getRGB(0, i) != sequence[i] ||
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snapshot.getRGB(9, i) != sequence[i] ) {
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ImageIO.write(snapshot, "png", new File("DrawOvalTest_snapshot.png"));
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throw new RuntimeException("Test failed.");
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}
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}
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}
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private static void render(Graphics2D g2) {
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g2.setColor(Color.BLUE);
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g2.fillRect(0, 0, 10, 10);
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g2.setColor(Color.RED);
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g2.drawOval(0, 0, 9, 9);
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}
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}
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