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 "../config.h"
  23
  24 #include "XAtom.hh"
  25 #include "blackbox.hh"
  26 #include "Screen.hh"
  27 #include "Util.hh"
  28
  29 XAtom::XAtom(Blackbox *bb) {
  30   _display = bb->getXDisplay();
  31
  32   // make sure asserts fire if there is a problem
  33   memset(_atoms, sizeof(_atoms), 0);
  34
  35   _atoms[utf8_string] = create("UTF8_STRING");
  36
  37 #ifdef    HAVE_GETPID
  38   _atoms[blackbox_pid] = create("_BLACKBOX_PID");
  39 #endif // HAVE_GETPID
  40
  41   _atoms[wm_colormap_windows] = create("WM_COLORMAP_WINDOWS");
  42   _atoms[wm_protocols] = create("WM_PROTOCOLS");
  43   _atoms[wm_state] = create("WM_STATE");
  44   _atoms[wm_change_state] = create("WM_CHANGE_STATE");
  45   _atoms[wm_delete_window] = create("WM_DELETE_WINDOW");
  46   _atoms[wm_take_focus] = create("WM_TAKE_FOCUS");
  47   _atoms[motif_wm_hints] = create("_MOTIF_WM_HINTS");
  48   _atoms[blackbox_hints] = create("_BLACKBOX_HINTS");
  49   _atoms[blackbox_attributes] = create("_BLACKBOX_ATTRIBUTES");
  50   _atoms[blackbox_change_attributes] = create("_BLACKBOX_CHANGE_ATTRIBUTES");
  51   _atoms[blackbox_structure_messages] = create("_BLACKBOX_STRUCTURE_MESSAGES");
  52   _atoms[blackbox_notify_startup] = create("_BLACKBOX_NOTIFY_STARTUP");
  53   _atoms[blackbox_notify_window_add] = create("_BLACKBOX_NOTIFY_WINDOW_ADD");
  54   _atoms[blackbox_notify_window_del] = create("_BLACKBOX_NOTIFY_WINDOW_DEL");
  55   _atoms[blackbox_notify_current_workspace] =
  56     create("_BLACKBOX_NOTIFY_CURRENT_WORKSPACE");
  57   _atoms[blackbox_notify_workspace_count] =
  58     create("_BLACKBOX_NOTIFY_WORKSPACE_COUNT");
  59   _atoms[blackbox_notify_window_focus] =
  60     create("_BLACKBOX_NOTIFY_WINDOW_FOCUS");
  61   _atoms[blackbox_notify_window_raise] =
  62     create("_BLACKBOX_NOTIFY_WINDOW_RAISE");
  63   _atoms[blackbox_notify_window_lower] =
  64     create("_BLACKBOX_NOTIFY_WINDOW_LOWER");
  65
  66   _atoms[blackbox_change_workspace] = create("_BLACKBOX_CHANGE_WORKSPACE");
  67   _atoms[blackbox_change_window_focus] =
  68     create("_BLACKBOX_CHANGE_WINDOW_FOCUS");
  69   _atoms[blackbox_cycle_window_focus] = create("_BLACKBOX_CYCLE_WINDOW_FOCUS");
  70
  71   _atoms[net_supported] = create("_NET_SUPPORTED");
  72   _atoms[net_client_list] = create("_NET_CLIENT_LIST");
  73   _atoms[net_client_list_stacking] = create("_NET_CLIENT_LIST_STACKING");
  74   _atoms[net_number_of_desktops] = create("_NET_NUMBER_OF_DESKTOPS");
  75   _atoms[net_desktop_geometry] = create("_NET_DESKTOP_GEOMETRY");
  76   _atoms[net_desktop_viewport] = create("_NET_DESKTOP_VIEWPORT");
  77   _atoms[net_current_desktop] = create("_NET_CURRENT_DESKTOP");
  78   _atoms[net_desktop_names] = create("_NET_DESKTOP_NAMES");
  79   _atoms[net_active_window] = create("_NET_ACTIVE_WINDOW");
  80   _atoms[net_workarea] = create("_NET_WORKAREA");
  81   _atoms[net_supporting_wm_check] = create("_NET_SUPPORTING_WM_CHECK");
  82   _atoms[net_virtual_roots] = create("_NET_VIRTUAL_ROOTS");
  83
  84   _atoms[net_close_window] = create("_NET_CLOSE_WINDOW");
  85   _atoms[net_wm_moveresize] = create("_NET_WM_MOVERESIZE");
  86
  87   _atoms[net_properties] = create("_NET_PROPERTIES");
  88   _atoms[net_wm_name] = create("_NET_WM_NAME");
  89   _atoms[net_wm_desktop] = create("_NET_WM_DESKTOP");
  90   _atoms[net_wm_window_type] = create("_NET_WM_WINDOW_TYPE");
  91   _atoms[net_wm_state] = create("_NET_WM_STATE");
  92   _atoms[net_wm_strut] = create("_NET_WM_STRUT");
  93   _atoms[net_wm_icon_geometry] = create("_NET_WM_ICON_GEOMETRY");
  94   _atoms[net_wm_icon] = create("_NET_WM_ICON");
  95   _atoms[net_wm_pid] = create("_NET_WM_PID");
  96   _atoms[net_wm_handled_icons] = create("_NET_WM_HANDLED_ICONS");
  97
  98   _atoms[net_wm_ping] = create("_NET_WM_PING");
  99 }
 100
 101
 102 /*
 103  * clean up the class' members
 104  */
 105 XAtom::~XAtom() {
 106   while (!_support_windows.empty()) {
 107     // make sure we aren't fucking with this somewhere
 108     assert(_support_windows.back() != None);
 109     XDestroyWindow(_display, _support_windows.back());
 110     _support_windows.pop_back();
 111   }
 112 }
 113
 114
 115 /*
 116  * Returns an atom from the Xserver, creating it if necessary.
 117  */
 118 Atom XAtom::create(const char *name) const {
 119   return XInternAtom(_display, name, False);
 120 }
 121
 122
 123 /*
 124  * Sets which atoms are supported for NETWM, by Openbox, on the root window.
 125  */
 126 void XAtom::setSupported(const ScreenInfo *screen) {
 127   Window root = screen->getRootWindow();
 128
 129   // create the netwm support window
 130   Window w = XCreateSimpleWindow(_display, root, 0, 0, 1, 1, 0, 0, 0);
 131   assert(w != None);
 132   _support_windows.push_back(w);
 133
 134   // set supporting window
 135   setValue(root, net_supporting_wm_check, Type_Window, w);
 136
 137   //set properties on the supporting window
 138   setValue(w, net_wm_name, Type_Utf8, "Openbox");
 139   setValue(w, net_supporting_wm_check, Type_Window, w);
 140
 141
 142   // we don't support any yet..
 143   // yes we do!
 144
 145   Atom supported[] = {
 146     _atoms[net_supported]      // remove me later, cuz i dont think i belong
 147   };
 148
 149   eraseValue(root, net_supported);
 150   for (unsigned int i = 0, num = sizeof(supported)/sizeof(Atom); i < num; ++i)
 151     addValue(root, net_supported, Type_Atom, supported[i]);
 152 }
 153
 154
 155 /*
 156  * Internal setValue used by all typed setValue functions.
 157  * Sets a window property on a window, optionally appending to the existing
 158  * value.
 159  */
 160 void XAtom::setValue(Window win, AvailableAtoms atom, Atom type,
 161                      unsigned char* data, int size, int nelements,
 162                      bool append) const {
 163   assert(atom >= 0 && atom < NUM_ATOMS);
 164   assert(win != None); assert(type != None);
 165   assert(data != (unsigned char *) 0);
 166   assert(size == 8 || size == 16 || size == 32);
 167   assert(nelements > 0);
 168   XChangeProperty(_display, win, _atoms[atom], type, size,
 169                   (append ? PropModeAppend : PropModeReplace),
 170                   data, nelements);
 171 }
 172
 173
 174 /*
 175  * Set a 32-bit property value on a window.
 176  */
 177 void XAtom::setValue(Window win, AvailableAtoms atom, AtomType type,
 178                      unsigned long value) const {
 179   Atom t;
 180   switch (type) {
 181   case Type_Cardinal: t = XA_CARDINAL; break;
 182   case Type_Atom:     t = XA_ATOM;     break;
 183   case Type_Window:   t = XA_WINDOW;   break;
 184   case Type_Pixmap:   t = XA_PIXMAP;   break;
 185   default: assert(false); // unhandled AtomType
 186   }
 187   setValue(win, atom, t, reinterpret_cast<unsigned char*>(&value),
 188            32, 1, false);
 189 }
 190
 191
 192 /*
 193  * Set a string property value on a window.
 194  */
 195 void XAtom::setValue(Window win, AvailableAtoms atom, StringType type,
 196                      const std::string &value) const {
 197   Atom t;
 198   switch (type) {
 199   case Type_String: t = XA_STRING;           break;
 200   case Type_Utf8:   t = _atoms[utf8_string]; break;
 201   default: assert(false); // unhandled StringType
 202   }
 203   setValue(win, atom, t,
 204            const_cast<unsigned char*>
 205            (reinterpret_cast<const unsigned char*>(value.c_str())),
 206            8, value.size(), false);
 207 }
 208
 209
 210 /*
 211  * Add elements to a 32-bit property value on a window.
 212  */
 213 void XAtom::addValue(Window win, AvailableAtoms atom, AtomType type,
 214                      unsigned long value) const {
 215   Atom t;
 216   switch (type) {
 217   case Type_Cardinal: t = XA_CARDINAL; break;
 218   case Type_Atom:     t = XA_ATOM;     break;
 219   case Type_Window:   t = XA_WINDOW;   break;
 220   case Type_Pixmap:   t = XA_PIXMAP;   break;
 221   default: assert(false); // unhandled Atom_Type
 222   }
 223   setValue(win, atom, t, reinterpret_cast<unsigned char*>(&value), 32, 1, true);
 224 }
 225
 226
 227 /*
 228  * Add characters to a string property value on a window.
 229  */
 230 void XAtom::addValue(Window win, AvailableAtoms atom, StringType type,
 231                      const std::string &value) const {
 232   Atom t;
 233   switch (type) {
 234   case Type_String: t = XA_STRING;           break;
 235   case Type_Utf8:   t = _atoms[utf8_string]; break;
 236   default: assert(false); // unhandled StringType
 237   }
 238   setValue(win, atom, t,
 239            const_cast<unsigned char*>
 240            (reinterpret_cast<const unsigned char *>
 241             (value.c_str())),
 242            8, value.size(), true);
 243 }
 244
 245
 246 /*
 247  * Internal getValue function used by all of the typed getValue functions.
 248  * Gets an property's value from a window.
 249  * Returns true if the property was successfully retrieved; false if the
 250  * property did not exist on the window, or has a different type/size format
 251  * than the user tried to retrieve.
 252  */
 253 bool XAtom::getValue(Window win, AvailableAtoms atom, Atom type,
 254                      unsigned long *nelements, unsigned char **value,
 255                      int size) const {
 256   assert(atom >= 0 && atom < NUM_ATOMS);
 257   assert(win != None); assert(type != None);
 258   assert(size == 8 || size == 16 || size == 32);
 259   unsigned char *c_val;        // value alloc'd with c malloc
 260   Atom ret_type;
 261   int ret_size;
 262   unsigned long ret_bytes;
 263   XGetWindowProperty(_display, win, _atoms[atom], 0l, 1l, False,
 264                      AnyPropertyType, &ret_type, &ret_size, nelements,
 265                      &ret_bytes, &c_val); // try get the first element
 266   if (ret_type == None)
 267     // the property does not exist on the window
 268     return false;
 269   if (ret_type != type || ret_size != size) {
 270     // wrong data in property
 271     XFree(c_val);
 272     return false;
 273   }
 274   // the data is correct, now, is there more than 1 element?
 275   if (ret_bytes == 0) {
 276     // we got the whole property's value
 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   // get the entire property since it is larger than one long
 283   free(c_val);
 284   // the number of longs that need to be retreived to get the property's entire
 285   // value. The last + 1 is the first long that we retrieved above.
 286   const int remain = (ret_bytes - 1)/sizeof(long) + 1 + 1;
 287   XGetWindowProperty(_display, win, _atoms[atom], 0l, remain, False, type,
 288                      &ret_type, &ret_size, nelements, &ret_bytes, &c_val);
 289   assert(ret_bytes == 0);
 290   *value = new unsigned char[*nelements * size/8 + 1];
 291   memcpy(*value, c_val, *nelements * size/8 + 1);
 292   XFree(c_val);
 293   return true;
 294 }
 295
 296
 297 /*
 298  * Gets a 32-bit property's value from a window.
 299  */
 300 bool XAtom::getValue(Window win, AvailableAtoms atom, AtomType type,
 301                          unsigned long *nelements,
 302                          unsigned long **value) const {
 303   Atom t;
 304   switch (type) {
 305   case Type_Cardinal: t = XA_CARDINAL; break;
 306   case Type_Atom:     t = XA_ATOM;     break;
 307   case Type_Window:   t = XA_WINDOW;   break;
 308   case Type_Pixmap:   t = XA_PIXMAP;   break;
 309   default: assert(false); // unhandled Atom_Type
 310   }
 311   return getValue(win, atom, XA_CARDINAL, nelements,
 312                   reinterpret_cast<unsigned char **>(value), 32);
 313 }
 314
 315
 316 /*
 317  * Gets an string property's value from a window.
 318  */
 319 bool XAtom::getValue(Window win, AvailableAtoms atom, StringType type,
 320                      std::string &value) const {
 321   Atom t;
 322   switch (type) {
 323   case Type_String: t = XA_STRING;           break;
 324   case Type_Utf8:   t = _atoms[utf8_string]; break;
 325   default: assert(false); // unhandled StringType
 326   }
 327   unsigned char *data;
 328   unsigned long nelements;
 329   bool ret = getValue(win, atom, t, &nelements, &data, 8);
 330   if (ret)
 331     value = reinterpret_cast<char*>(data);
 332   return ret;
 333 }
 334
 335
 336 /*
 337  * Removes a property entirely from a window.
 338  */
 339 void XAtom::eraseValue(Window win, AvailableAtoms atom) const {
 340   XDeleteProperty(_display, win, _atoms[atom]);
 341 }