1/* 2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package sun.awt.X11; 27 28import java.awt.Point; 29import java.awt.Window; 30import java.awt.GraphicsEnvironment; 31import java.awt.GraphicsDevice; 32import java.awt.peer.MouseInfoPeer; 33import sun.awt.X11GraphicsDevice; 34 35import sun.awt.AWTAccessor; 36 37public class XMouseInfoPeer implements MouseInfoPeer { 38 39 /** 40 * Package-private constructor to prevent instantiation. 41 */ 42 XMouseInfoPeer() { 43 } 44 45 public int fillPointWithCoords(Point point) { 46 long display = XToolkit.getDisplay(); 47 GraphicsEnvironment ge = GraphicsEnvironment. 48 getLocalGraphicsEnvironment(); 49 GraphicsDevice[] gds = ge.getScreenDevices(); 50 int gdslen = gds.length; 51 52 XToolkit.awtLock(); 53 try { 54 for (int i = 0; i < gdslen; i++) { 55 long screenRoot = XlibWrapper.RootWindow(display, i); 56 boolean pointerFound = XlibWrapper.XQueryPointer( 57 display, screenRoot, 58 XlibWrapper.larg1, // root_return 59 XlibWrapper.larg2, // child_return 60 XlibWrapper.larg3, // xr_return 61 XlibWrapper.larg4, // yr_return 62 XlibWrapper.larg5, // xw_return 63 XlibWrapper.larg6, // yw_return 64 XlibWrapper.larg7); // mask_return 65 if (pointerFound) { 66 point.x = Native.getInt(XlibWrapper.larg3); 67 point.y = Native.getInt(XlibWrapper.larg4); 68 GraphicsDevice device = gds[i]; 69 if (device instanceof X11GraphicsDevice) { 70 int scale = ((X11GraphicsDevice) device).getScaleFactor(); 71 point.x = XlibUtil.scaleDown(point.x, scale); 72 point.y = XlibUtil.scaleDown(point.y, scale); 73 } 74 return i; 75 } 76 } 77 } finally { 78 XToolkit.awtUnlock(); 79 } 80 81 // this should never happen 82 assert false : "No pointer found in the system."; 83 return 0; 84 } 85 86 @SuppressWarnings("deprecation") 87 public boolean isWindowUnderMouse(Window w) { 88 89 long display = XToolkit.getDisplay(); 90 91 // java.awt.Component.findUnderMouseInWindow checks that 92 // the peer is non-null by checking that the component 93 // is showing. 94 XWindow peer = AWTAccessor.getComponentAccessor().getPeer(w); 95 long contentWindow = peer.getContentWindow(); 96 long parent = XlibUtil.getParentWindow(contentWindow); 97 98 XToolkit.awtLock(); 99 try 100 { 101 boolean windowOnTheSameScreen = XlibWrapper.XQueryPointer(display, parent, 102 XlibWrapper.larg1, // root_return 103 XlibWrapper.larg8, // child_return 104 XlibWrapper.larg3, // root_x_return 105 XlibWrapper.larg4, // root_y_return 106 XlibWrapper.larg5, // win_x_return 107 XlibWrapper.larg6, // win_y_return 108 XlibWrapper.larg7); // mask_return 109 long siblingWindow = Native.getWindow(XlibWrapper.larg8); 110 return (siblingWindow == contentWindow && windowOnTheSameScreen); 111 } 112 finally 113 { 114 XToolkit.awtUnlock(); 115 } 116 } 117} 118