Dogcows Code - chaz/openbox/blob - src/XAtom.cc

   1 // XAtom.cc for Openbox
   2 // Copyright (c) 2002 - 2002 Ben Jansens (xor at orodu.net)
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining a
   5 // copy of this software and associated documentation files (the "Software"),
   6 // to deal in the Software without restriction, including without limitation
   7 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 // and/or sell copies of the Software, and to permit persons to whom the
   9 // Software is furnished to do so, subject to the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be included in
  12 // all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20 // DEALINGS IN THE SOFTWARE.
  21
  22 #include "XAtom.h"
  23 #include "XDisplay.h"
  24 #include "XScreen.h"
  25 #include "Util.h"
  26
  27 XAtom::XAtom(const XDisplay *display) {
  28   _display = display->_display;
  29
  30   wm_colormap_windows = getAtom("WM_COLORMAP_WINDOWS");
  31   wm_protocols = getAtom("WM_PROTOCOLS");
  32   wm_state = getAtom("WM_STATE");
  33   wm_change_state = getAtom("WM_CHANGE_STATE");
  34   wm_delete_window = getAtom("WM_DELETE_WINDOW");
  35   wm_take_focus = getAtom("WM_TAKE_FOCUS");
  36   motif_wm_hints = getAtom("_MOTIF_WM_HINTS");
  37   openbox_hints = getAtom("_BLACKBOX_HINTS");
  38   openbox_attributes = getAtom("_BLACKBOX_ATTRIBUTES");
  39   openbox_change_attributes = getAtom("_BLACKBOX_CHANGE_ATTRIBUTES");
  40
  41   openbox_structure_messages = getAtom("_BLACKBOX_STRUCTURE_MESSAGES");
  42   openbox_notify_startup = getAtom("_BLACKBOX_NOTIFY_STARTUP");
  43   openbox_notify_window_add = getAtom("_BLACKBOX_NOTIFY_WINDOW_ADD");
  44   openbox_notify_window_del = getAtom("_BLACKBOX_NOTIFY_WINDOW_DEL");
  45   openbox_notify_current_workspace =
  46     getAtom("_BLACKBOX_NOTIFY_CURRENT_WORKSPACE");
  47   openbox_notify_workspace_count = getAtom("_BLACKBOX_NOTIFY_WORKSPACE_COUNT");
  48   openbox_notify_window_focus = getAtom("_BLACKBOX_NOTIFY_WINDOW_FOCUS");
  49   openbox_notify_window_raise = getAtom("_BLACKBOX_NOTIFY_WINDOW_RAISE");
  50   openbox_notify_window_lower = getAtom("_BLACKBOX_NOTIFY_WINDOW_LOWER");
  51
  52   openbox_change_workspace = getAtom("_BLACKBOX_CHANGE_WORKSPACE");
  53   openbox_change_window_focus = getAtom("_BLACKBOX_CHANGE_WINDOW_FOCUS");
  54   openbox_cycle_window_focus = getAtom("_BLACKBOX_CYCLE_WINDOW_FOCUS");
  55
  56   net_supported = getAtom("_NET_SUPPORTED");
  57   net_client_list = getAtom("_NET_CLIENT_LIST");
  58   net_client_list_stacking = getAtom("_NET_CLIENT_LIST_STACKING");
  59   net_number_of_desktops = getAtom("_NET_NUMBER_OF_DESKTOPS");
  60   net_desktop_geometry = getAtom("_NET_DESKTOP_GEOMETRY");
  61   net_desktop_viewport = getAtom("_NET_DESKTOP_VIEWPORT");
  62   net_current_desktop = getAtom("_NET_CURRENT_DESKTOP");
  63   net_desktop_names = getAtom("_NET_DESKTOP_NAMES");
  64   net_active_window = getAtom("_NET_ACTIVE_WINDOW");
  65   net_workarea = getAtom("_NET_WORKAREA");
  66   net_supporting_wm_check = getAtom("_NET_SUPPORTING_WM_CHECK");
  67   net_virtual_roots = getAtom("_NET_VIRTUAL_ROOTS");
  68
  69   net_close_window = getAtom("_NET_CLOSE_WINDOW");
  70   net_wm_moveresize = getAtom("_NET_WM_MOVERESIZE");
  71
  72   net_properties = getAtom("_NET_PROPERTIES");
  73   net_wm_name = getAtom("_NET_WM_NAME");
  74   net_wm_desktop = getAtom("_NET_WM_DESKTOP");
  75   net_wm_window_type = getAtom("_NET_WM_WINDOW_TYPE");
  76   net_wm_state = getAtom("_NET_WM_STATE");
  77   net_wm_strut = getAtom("_NET_WM_STRUT");
  78   net_wm_icon_geometry = getAtom("_NET_WM_ICON_GEOMETRY");
  79   net_wm_icon = getAtom("_NET_WM_ICON");
  80   net_wm_pid = getAtom("_NET_WM_PID");
  81   net_wm_handled_icons = getAtom("_NET_WM_HANDLED_ICONS");
  82
  83   net_wm_ping = getAtom("_NET_WM_PING");
  84
  85   for (int s = 0, c = display->screenCount(); s < c; ++s)
  86     setSupported(display->screen(s));
  87 }
  88
  89
  90 /*
  91  * clean up the class' members
  92  */
  93 XAtom::~XAtom() {
  94   while (!_support_windows.empty()) {
  95     // make sure we aren't fucking with this somewhere
  96     ASSERT(_support_windows.back() != None);
  97     XDestroyWindow(_display, _support_windows.back());
  98     _support_windows.pop_back();
  99   }
 100 }
 101
 102
 103 /*
 104  * Returns an atom from the Xserver, creating it if necessary.
 105  */
 106 Atom XAtom::getAtom(const char *name) const {
 107   return XInternAtom(_display, name, False);
 108 }
 109
 110
 111 /*
 112  * Sets which atoms are supported for NETWM, by Openbox, on the root window.
 113  */
 114 void XAtom::setSupported(const XScreen *screen) {
 115   // create the netwm support window
 116   Window w = XCreateSimpleWindow(_display, screen->rootWindow(),
 117                                  0, 0, 1, 1, 0, 0, 0);
 118   ASSERT(w != None);
 119   _support_windows.push_back(w);
 120
 121   // we don't support any yet..
 122 }
 123
 124
 125 /*
 126  * Internal setValue used by all typed setValue functions.
 127  * Sets a window property on a window, optionally appending to the existing
 128  * value.
 129  */
 130 void XAtom::setValue(Window win, Atom atom, Atom type, unsigned char* data,
 131                      int size, int nelements, bool append) const {
 132   ASSERT(win != None); ASSERT(atom != None); ASSERT(type != None);
 133   ASSERT(data != (unsigned char *) 0);
 134   ASSERT(size == 8 || size == 16 || size == 32);
 135   ASSERT(nelements > 0);
 136   XChangeProperty(_display, win, atom, type, size,
 137                   (append ? PropModeAppend : PropModeReplace),
 138                   data, nelements);
 139 }
 140
 141
 142 /*
 143  * Set a 32-bit CARDINAL property value on a window.
 144  */
 145 void XAtom::setCardValue(Window win, Atom atom, long value) const {
 146   setValue(win, atom, XA_CARDINAL, reinterpret_cast<unsigned char*>(&value),
 147            32, 1, false);
 148 }
 149
 150
 151 /*
 152  * Set an Atom property value on a window.
 153  */
 154 void XAtom::setAtomValue(Window win, Atom atom, Atom value) const {
 155   setValue(win, atom, XA_ATOM, reinterpret_cast<unsigned char*>(&value),
 156            32, 1, false);
 157 }
 158
 159
 160 /*
 161  * Set a Window property value on a window.
 162  */
 163 void XAtom::setWindowValue(Window win, Atom atom, Window value) const {
 164   setValue(win, atom, XA_WINDOW, reinterpret_cast<unsigned char*>(&value),
 165            32, 1, false);
 166 }
 167
 168
 169 /*
 170  * Set a Pixmap property value on a window.
 171  */
 172 void XAtom::setPixmapValue(Window win, Atom atom, Pixmap value) const {
 173   setValue(win, atom, XA_PIXMAP, reinterpret_cast<unsigned char*>(&value),
 174            32, 1, false);
 175 }
 176
 177
 178 /*
 179  * Set a string property value on a window.
 180  */
 181 void XAtom::setStringValue(Window win, Atom atom, std::string &value) const {
 182   setValue(win, atom, XA_STRING,
 183            const_cast<unsigned char*>
 184            (reinterpret_cast<const unsigned char*>(value.c_str())),
 185            8, value.size(), false);
 186 }
 187
 188
 189 /*
 190  * Add elements to a 32-bit CARDINAL property value on a window.
 191  */
 192 void XAtom::addCardValue(Window win, Atom atom, long value) const {
 193   setValue(win, atom, XA_CARDINAL, reinterpret_cast<unsigned char*>(&value),
 194            32, 1, true);
 195 }
 196
 197
 198 /*
 199  * Add elements to an Atom property value on a window.
 200  */
 201 void XAtom::addAtomValue(Window win, Atom atom, Atom value) const {
 202   setValue(win, atom, XA_ATOM, reinterpret_cast<unsigned char*>(&value),
 203            32, 1, true);
 204 }
 205
 206
 207 /*
 208  * Add elements to a Window property value on a window.
 209  */
 210 void XAtom::addWindowValue(Window win, Atom atom, Window value) const {
 211   setValue(win, atom, XA_WINDOW, reinterpret_cast<unsigned char*>(&value),
 212            32, 1, true);
 213 }
 214
 215
 216 /*
 217  * Add elements to a Pixmap property value on a window.
 218  */
 219 void XAtom::addPixmapValue(Window win, Atom atom, Pixmap value) const {
 220   setValue(win, atom, XA_PIXMAP, reinterpret_cast<unsigned char*>(&value),
 221            32, 1, true);
 222 }
 223
 224
 225 /*
 226  * Add characters to a string property value on a window.
 227  */
 228 void XAtom::addStringValue(Window win, Atom atom, std::string &value) const {
 229   setValue(win, atom, XA_STRING,
 230            const_cast<unsigned char*>
 231            (reinterpret_cast<const unsigned char *>
 232             (value.c_str())),
 233            8, value.size(), true);
 234 }
 235
 236
 237 /*
 238  * Internal getValue function used by all of the typed getValue functions.
 239  * Gets an property's value from a window.
 240  * Returns true if the property was successfully retrieved; false if the
 241  * property did not exist on the window, or has a different type/size format
 242  * than the user tried to retrieve.
 243  */
 244 bool XAtom::getValue(Window win, Atom atom, Atom type, unsigned long *nelements,
 245                      unsigned char **value, int size) const {
 246   unsigned char *c_val;        // value alloc'd with c malloc
 247   Atom ret_type;
 248   int ret_size;
 249   unsigned long ret_bytes;
 250   XGetWindowProperty(_display, win, atom, 0l, 1l, False, AnyPropertyType,
 251                      &ret_type, &ret_size, nelements, &ret_bytes,
 252                      &c_val); // try get the first element
 253   if (ret_type == None)
 254     // the property does not exist on the window
 255     return false;
 256   if (ret_type != type || ret_size != size) {
 257     // wrong data in property
 258     XFree(c_val);
 259     return false;
 260   }
 261   // the data is correct, now, is there more than 1 element?
 262   if (ret_bytes == 0) {
 263     // we got the whole property's value
 264     *value = new unsigned char[*nelements * size/8 + 1];
 265     memcpy(*value, c_val, *nelements * size/8 + 1);
 266     XFree(c_val);
 267     return true;
 268   }
 269   // get the entire property since it is larger than one long
 270   free(c_val);
 271   // the number of longs that need to be retreived to get the property's entire
 272   // value. The last + 1 is the first long that we retrieved above.
 273   const int remain = (ret_bytes - 1)/sizeof(long) + 1 + 1;
 274   XGetWindowProperty(_display, win, atom, 0l, remain, False, type, &ret_type,
 275                      &ret_size, nelements, &ret_bytes, &c_val);
 276   ASSERT(ret_bytes == 0);
 277   *value = new unsigned char[*nelements * size/8 + 1];
 278   memcpy(*value, c_val, *nelements * size/8 + 1);
 279   XFree(c_val);
 280   return true;
 281 }
 282
 283
 284 /*
 285  * Gets a 32-bit Cardinal property's value from a window.
 286  */
 287 bool XAtom::getCardValue(Window win, Atom atom, unsigned long *nelements,
 288                      long **value) const {
 289   return XAtom::getValue(win, atom, XA_CARDINAL, nelements,
 290                   reinterpret_cast<unsigned char **>(value), 32);
 291 }
 292
 293
 294 /*
 295  * Gets an Atom property's value from a window.
 296  */
 297 bool XAtom::getAtomValue(Window win, Atom atom, unsigned long *nelements,
 298                      Atom **value) const {
 299   return XAtom::getValue(win, atom, XA_ATOM, nelements,
 300                   reinterpret_cast<unsigned char **>(value), 32);
 301 }
 302
 303
 304 /*
 305  * Gets an Window property's value from a window.
 306  */
 307 bool XAtom::getWindowValue(Window win, Atom atom, unsigned long *nelements,
 308                      Window **value) const {
 309   return XAtom::getValue(win, atom, XA_WINDOW, nelements,
 310                   reinterpret_cast<unsigned char **>(value), 32);
 311 }
 312
 313
 314 /*
 315  * Gets an Pixmap property's value from a window.
 316  */
 317 bool XAtom::getPixmapValue(Window win, Atom atom, unsigned long *nelements,
 318                      Pixmap **value) const {
 319   return XAtom::getValue(win, atom, XA_PIXMAP, nelements,
 320                   reinterpret_cast<unsigned char **>(value), 32);
 321 }
 322
 323
 324 /*
 325  * Gets an string property's value from a window.
 326  */
 327 bool XAtom::getStringValue(Window win, Atom atom, unsigned long *nelements,
 328                      std::string &value) const {
 329   unsigned char *data;
 330   bool ret = XAtom::getValue(win, atom, XA_STRING, nelements, &data, 8);
 331   if (ret)
 332     value = reinterpret_cast<char*>(data);
 333   return ret;
 334 }
 335
 336
 337 /*
 338  * Removes a property entirely from a window.
 339  */
 340 void XAtom::eraseValue(Window win, Atom atom) const {
 341   XDeleteProperty(_display, win, atom);
 342 }