122 lines
3.9 KiB
Java
122 lines
3.9 KiB
Java
/*
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* Copyright (c) 2002, 2024, 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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* @bug 4725045
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* @key headful
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* @summary verifies that there are no artifacts due to using
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* GDI for copies to the back buffer (GDI should only be used
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* for copies to the screen)
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* @run main GdiBlitOffscreenTest
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*/
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import java.awt.Color;
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import java.awt.Graphics;
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import java.awt.Image;
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import java.awt.Point;
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import java.awt.Robot;
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import java.awt.image.BufferedImage;
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import javax.swing.JComponent;
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import javax.swing.JFrame;
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import javax.swing.SwingUtilities;
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public class GdiBlitOffscreenTest {
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static volatile JFrame f;
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static final int imageW = 100, imageH = 100, FW = 500, FH = 500;
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static volatile BufferedImage greenImage;
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public static void main(String[] args) throws Exception {
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// First, create an image.
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greenImage = new BufferedImage(imageW, imageH,
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BufferedImage.TYPE_INT_RGB);
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Graphics redG = greenImage.getGraphics();
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redG.setColor(Color.green);
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redG.fillRect(0, 0, imageW, imageH);
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redG.setColor(Color.white);
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redG.drawString("Passed!", 30, 80);
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Robot robot = new Robot();
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try {
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SwingUtilities.invokeAndWait(GdiBlitOffscreenTest::createUI);
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robot.delay(1000);
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robot.waitForIdle();
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Point p = f.getLocationOnScreen();
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Color c = robot.getPixelColor(p.x+FW/2, p.y+FH/2);
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if (!c.equals(Color.green)) {
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throw new RuntimeException("Color is " + c);
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}
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} finally {
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if (f != null) {
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SwingUtilities.invokeAndWait(f::dispose);
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}
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}
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}
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private static void createUI() {
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f = new JFrame("GdiBlitOffscreenTest");
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f.setSize(FW, FH);
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f.setVisible(true);
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// copy the image to the window.
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Graphics g = f.getGraphics();
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g.drawImage(greenImage, 0, 0, null);
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// Now, get on with the rest of the test
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JComponent app = new GdiBlitOffscreenTestComponent(imageW, imageH, greenImage);
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app.setSize(500, 500);
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f.getContentPane().add(app);
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f.validate();
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f.repaint();
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}
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}
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class GdiBlitOffscreenTestComponent extends JComponent {
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int imageW, imageH;
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Image theImage;
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public GdiBlitOffscreenTestComponent(int imageW, int imageH,
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Image theImage)
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{
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this.theImage = theImage;
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this.imageW = imageW;
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this.imageH = imageH;
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}
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public void paintComponent(Graphics g) {
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int imageX = (getWidth() - imageW) / 2;
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int imageY = (getHeight() - imageH) / 2;
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g.setColor(Color.blue);
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g.fillRect(0, 0, getWidth(), getHeight());
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g.setColor(Color.red);
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g.fillRect(imageX, imageY, imageW, imageH);
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g.setColor(Color.white);
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g.drawString("Failed!", imageX + 30, imageY + 80);
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g.drawImage(theImage, imageX, imageY, null);
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}
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}
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