1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_vcl.hxx" 26 27 #include <stdio.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include <unistd.h> 31 32 #include <X11/Xlib.h> 33 #include <X11/Xutil.h> 34 #include <X11/Xatom.h> 35 #include "FWS.hxx" 36 37 static Atom fwsIconAtom; 38 39 static Atom FWS_CLIENT; 40 static Atom FWS_COMM_WINDOW; 41 static Atom FWS_PROTOCOLS; 42 static Atom FWS_STACK_UNDER; 43 static Atom FWS_PARK_ICONS; 44 static Atom FWS_PASS_ALL_INPUT; 45 static Atom FWS_PASSES_INPUT; 46 static Atom FWS_HANDLES_FOCUS; 47 48 static Atom FWS_REGISTER_WINDOW; 49 static Atom FWS_STATE_CHANGE; 50 static Atom FWS_UNSEEN_STATE; 51 static Atom FWS_NORMAL_STATE; 52 static Atom WM_PROTOCOLS; 53 static Atom WM_CHANGE_STATE; 54 55 static Bool fwsStackUnder; 56 static Bool fwsParkIcons; 57 static Bool fwsPassesInput; 58 static Bool fwsHandlesFocus; 59 60 static Window fwsCommWindow; 61 62 /*************************************<->*********************************** 63 * 64 * WMSupportsFWS() - 65 * 66 * Initialize our atoms and determine if the current window manager is 67 * providing FWS extension support. 68 * 69 *************************************<->***********************************/ 70 71 Bool 72 WMSupportsFWS (Display *display, int screen) 73 { 74 unsigned int i; 75 Atom protocol; 76 Atom propType; 77 int propFormat; 78 unsigned long propItems; 79 unsigned long propBytesAfter; 80 unsigned char *propData; 81 char propName[64]; 82 83 FWS_CLIENT = XInternAtom(display, "_SUN_FWS_CLIENT", False); 84 FWS_COMM_WINDOW = XInternAtom(display, "_SUN_FWS_COMM_WINDOW", False); 85 FWS_PROTOCOLS = XInternAtom(display, "_SUN_FWS_PROTOCOLS", False); 86 FWS_STACK_UNDER = XInternAtom(display, "_SUN_FWS_STACK_UNDER", False); 87 FWS_PARK_ICONS = XInternAtom(display, "_SUN_FWS_PARK_ICONS", False); 88 FWS_PASS_ALL_INPUT = XInternAtom(display, "_SUN_FWS_PASS_ALL_INPUT", False); 89 FWS_PASSES_INPUT = XInternAtom(display, "_SUN_FWS_PASSES_INPUT", False); 90 FWS_HANDLES_FOCUS = XInternAtom(display, "_SUN_FWS_HANDLES_FOCUS", False); 91 FWS_REGISTER_WINDOW= XInternAtom(display, "_SUN_FWS_REGISTER_WINDOW",False); 92 FWS_STATE_CHANGE = XInternAtom(display, "_SUN_FWS_STATE_CHANGE", False); 93 FWS_UNSEEN_STATE = XInternAtom(display, "_SUN_FWS_UNSEEN_STATE", False); 94 FWS_NORMAL_STATE = XInternAtom(display, "_SUN_FWS_NORMAL_STATE", False); 95 WM_PROTOCOLS = XInternAtom(display, "WM_PROTOCOLS", False); 96 WM_CHANGE_STATE = XInternAtom(display, "WM_CHANGE_STATE", False); 97 98 snprintf (propName, sizeof(propName), "_SUN_FWS_NEXT_ICON_%d", screen); 99 fwsIconAtom = XInternAtom(display, propName, False); 100 101 if (XGetWindowProperty (display, DefaultRootWindow (display), 102 FWS_COMM_WINDOW, 0, 1, 103 False, AnyPropertyType, &propType, 104 &propFormat, &propItems, 105 &propBytesAfter, &propData) != Success) 106 return False; 107 108 if (propFormat != 32 || 109 propItems != 1 || 110 propBytesAfter != 0) 111 { 112 #if OSL_DEBUG_LEVEL > 1 113 fprintf (stderr, "Bad FWS_COMM_WINDOW property on root window.\n"); 114 #endif 115 XFree (propData); 116 return False; 117 } 118 119 fwsCommWindow = *(Window *) propData; 120 #if OSL_DEBUG_LEVEL > 1 121 fprintf (stderr, "Using fwsCommWindow = 0x%lx.\n", fwsCommWindow); 122 #endif 123 XFree (propData); 124 125 126 if (XGetWindowProperty (display, DefaultRootWindow (display), 127 FWS_PROTOCOLS, 0, 10, 128 False, AnyPropertyType, &propType, 129 &propFormat, &propItems, 130 &propBytesAfter, &propData) != Success) 131 { 132 return False; 133 } 134 135 if (propFormat != 32 || 136 propBytesAfter != 0) 137 { 138 #if OSL_DEBUG_LEVEL > 1 139 fprintf (stderr, "Bad FWS_PROTOCOLS property on root window.\n"); 140 #endif 141 XFree (propData); 142 return False; 143 } 144 145 for (i = 0; i < propItems; ++i) 146 { 147 protocol = ((Atom *) propData)[i]; 148 if (protocol == FWS_STACK_UNDER) 149 { 150 fwsStackUnder = True; 151 #if OSL_DEBUG_LEVEL > 1 152 fprintf (stderr, "Using fwsStackUnder.\n"); 153 #endif 154 } 155 else 156 if (protocol == FWS_PARK_ICONS) 157 { 158 fwsParkIcons = True; 159 #if OSL_DEBUG_LEVEL > 1 160 fprintf (stderr, "Using fwsParkIcons.\n"); 161 #endif 162 } 163 else 164 if (protocol == FWS_PASSES_INPUT) 165 { 166 fwsPassesInput = True; 167 #if OSL_DEBUG_LEVEL > 1 168 fprintf (stderr, "Using fwsPassesInput.\n"); 169 #endif 170 } 171 else 172 if (protocol == FWS_HANDLES_FOCUS) 173 { 174 fwsHandlesFocus = True; 175 #if OSL_DEBUG_LEVEL > 1 176 fprintf (stderr, "Using fwsHandlesFocus.\n"); 177 #endif 178 } 179 } 180 181 XFree (propData); 182 return True; 183 } 184 185 /*************************************<->*********************************** 186 * 187 * newHandler() - 188 * 189 * Handle X errors (temporarily) to record the occurance of BadWindow 190 * errors without crashing. Used to detect the FWS_COMM_WINDOW root window 191 * property containing an old or obsolete window id. 192 * 193 *************************************<->***********************************/ 194 195 extern "C" { 196 197 static Bool badWindowFound; 198 static int (* oldHandler) (Display *, XErrorEvent *); 199 200 static int 201 newHandler (Display *display, XErrorEvent *xerror) 202 { 203 if (xerror->error_code != BadWindow) 204 (*oldHandler)(display, xerror); 205 else 206 badWindowFound = True; 207 208 return 0; 209 } 210 211 } 212 213 /*************************************<->*********************************** 214 * 215 * RegisterFwsWindow() - 216 * 217 * Send a client message to the FWS_COMM_WINDOW indicating the existance 218 * of a new FWS client window. Be careful to avoid BadWindow errors on 219 * the XSendEvent in case the FWS_COMM_WINDOW root window property had 220 * old/obsolete junk in it. 221 * 222 *************************************<->***********************************/ 223 224 Bool 225 RegisterFwsWindow (Display *display, Window window) 226 { 227 XClientMessageEvent msg; 228 229 msg.type = ClientMessage; 230 msg.window = fwsCommWindow; 231 msg.message_type = FWS_REGISTER_WINDOW; 232 msg.format = 32; 233 msg.data.l[0] = window; 234 235 XSync (display, False); 236 badWindowFound = False; 237 oldHandler = XSetErrorHandler (newHandler); 238 239 XSendEvent (display, fwsCommWindow, False, NoEventMask, 240 (XEvent *) &msg); 241 XSync (display, False); 242 243 XSetErrorHandler (oldHandler); 244 #if OSL_DEBUG_LEVEL > 1 245 if (badWindowFound) 246 fprintf (stderr, "No FWS client window to register with.\n"); 247 #endif 248 249 return !badWindowFound; 250 } 251 252 /*************************************<->*********************************** 253 * 254 * AddFwsProtocols - 255 * 256 * Add the FWS protocol atoms to the WMProtocols property for the window. 257 * 258 *************************************<->***********************************/ 259 260 void 261 AddFwsProtocols (Display *display, Window window) 262 { 263 #define MAX_FWS_PROTOS 10 264 265 Atom fwsProtocols[ MAX_FWS_PROTOS ]; 266 int nProtos = 0; 267 268 fwsProtocols[ nProtos++ ] = FWS_CLIENT; 269 fwsProtocols[ nProtos++ ] = FWS_STACK_UNDER; 270 fwsProtocols[ nProtos++ ] = FWS_STATE_CHANGE; 271 fwsProtocols[ nProtos++ ] = FWS_PASS_ALL_INPUT; 272 XChangeProperty (display, window, WM_PROTOCOLS, 273 XA_ATOM, 32, PropModeAppend, 274 (unsigned char *) fwsProtocols, nProtos); 275 } 276 277