/* * Copyright (c) 2009, 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. */ /* @test @bug 6726866 8186617 @summary Repainting artifacts when resizing or dragging JInternalFrames in non-opaque toplevel @run applet/manual=yesno bug6726866.html */ import java.awt.Color; import java.awt.Window; import javax.swing.JApplet; import javax.swing.JDesktopPane; import javax.swing.JFrame; import javax.swing.JInternalFrame; import javax.swing.JLabel; public class bug6726866 extends JApplet { public void init() { JFrame frame = new JFrame("bug6726866"); frame.setUndecorated(true); setWindowNonOpaque(frame); JDesktopPane desktop = new JDesktopPane(); desktop.setBackground(Color.GREEN); JInternalFrame iFrame = new JInternalFrame("Test", true, true, true, true); iFrame.add(new JLabel("internal Frame")); iFrame.setBounds(10, 10, 300, 200); iFrame.setVisible(true); desktop.add(iFrame); frame.add(desktop); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(400, 400); frame.setVisible(true); frame.toFront(); } public static void setWindowNonOpaque(Window window) { Color bg = window.getBackground(); if (bg == null) { bg = new Color(0, 0, 0, 0); } window.setBackground( new Color(bg.getRed(), bg.getGreen(), bg.getBlue(), 0)); } }