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[cardinal] = XA_CARDINAL;
  36   _atoms[window] = XA_WINDOW;
  37   _atoms[pixmap] = XA_PIXMAP;
  38   _atoms[atom] = XA_ATOM;
  39   _atoms[string] = XA_STRING;
  40   _atoms[utf8_string] = create("UTF8_STRING");
  41
  42 #ifdef    HAVE_GETPID
  43   _atoms[blackbox_pid] = create("_BLACKBOX_PID");
  44 #endif // HAVE_GETPID
  45
  46   _atoms[wm_colormap_windows] = create("WM_COLORMAP_WINDOWS");
  47   _atoms[wm_protocols] = create("WM_PROTOCOLS");
  48   _atoms[wm_state] = create("WM_STATE");
  49   _atoms[wm_change_state] = create("WM_CHANGE_STATE");
  50   _atoms[wm_delete_window] = create("WM_DELETE_WINDOW");
  51   _atoms[wm_take_focus] = create("WM_TAKE_FOCUS");
  52   _atoms[motif_wm_hints] = create("_MOTIF_WM_HINTS");
  53   _atoms[blackbox_hints] = create("_BLACKBOX_HINTS");
  54   _atoms[blackbox_attributes] = create("_BLACKBOX_ATTRIBUTES");
  55   _atoms[blackbox_change_attributes] = create("_BLACKBOX_CHANGE_ATTRIBUTES");
  56   _atoms[blackbox_structure_messages] = create("_BLACKBOX_STRUCTURE_MESSAGES");
  57   _atoms[blackbox_notify_startup] = create("_BLACKBOX_NOTIFY_STARTUP");
  58   _atoms[blackbox_notify_window_add] = create("_BLACKBOX_NOTIFY_WINDOW_ADD");
  59   _atoms[blackbox_notify_window_del] = create("_BLACKBOX_NOTIFY_WINDOW_DEL");
  60   _atoms[blackbox_notify_current_workspace] =
  61     create("_BLACKBOX_NOTIFY_CURRENT_WORKSPACE");
  62   _atoms[blackbox_notify_workspace_count] =
  63     create("_BLACKBOX_NOTIFY_WORKSPACE_COUNT");
  64   _atoms[blackbox_notify_window_focus] =
  65     create("_BLACKBOX_NOTIFY_WINDOW_FOCUS");
  66   _atoms[blackbox_notify_window_raise] =
  67     create("_BLACKBOX_NOTIFY_WINDOW_RAISE");
  68   _atoms[blackbox_notify_window_lower] =
  69     create("_BLACKBOX_NOTIFY_WINDOW_LOWER");
  70
  71   _atoms[blackbox_change_workspace] = create("_BLACKBOX_CHANGE_WORKSPACE");
  72   _atoms[blackbox_change_window_focus] =
  73     create("_BLACKBOX_CHANGE_WINDOW_FOCUS");
  74   _atoms[blackbox_cycle_window_focus] = create("_BLACKBOX_CYCLE_WINDOW_FOCUS");
  75
  76   _atoms[net_supported] = create("_NET_SUPPORTED");
  77   _atoms[net_client_list] = create("_NET_CLIENT_LIST");
  78   _atoms[net_client_list_stacking] = create("_NET_CLIENT_LIST_STACKING");
  79   _atoms[net_number_of_desktops] = create("_NET_NUMBER_OF_DESKTOPS");
  80   _atoms[net_desktop_geometry] = create("_NET_DESKTOP_GEOMETRY");
  81   _atoms[net_desktop_viewport] = create("_NET_DESKTOP_VIEWPORT");
  82   _atoms[net_current_desktop] = create("_NET_CURRENT_DESKTOP");
  83   _atoms[net_desktop_names] = create("_NET_DESKTOP_NAMES");
  84   _atoms[net_active_window] = create("_NET_ACTIVE_WINDOW");
  85   _atoms[net_workarea] = create("_NET_WORKAREA");
  86   _atoms[net_supporting_wm_check] = create("_NET_SUPPORTING_WM_CHECK");
  87   _atoms[net_virtual_roots] = create("_NET_VIRTUAL_ROOTS");
  88
  89   _atoms[net_close_window] = create("_NET_CLOSE_WINDOW");
  90   _atoms[net_wm_moveresize] = create("_NET_WM_MOVERESIZE");
  91
  92   _atoms[net_properties] = create("_NET_PROPERTIES");
  93   _atoms[net_wm_name] = create("_NET_WM_NAME");
  94   _atoms[net_wm_desktop] = create("_NET_WM_DESKTOP");
  95   _atoms[net_wm_window_type] = create("_NET_WM_WINDOW_TYPE");
  96   _atoms[net_wm_state] = create("_NET_WM_STATE");
  97   _atoms[net_wm_strut] = create("_NET_WM_STRUT");
  98   _atoms[net_wm_icon_geometry] = create("_NET_WM_ICON_GEOMETRY");
  99   _atoms[net_wm_icon] = create("_NET_WM_ICON");
 100   _atoms[net_wm_pid] = create("_NET_WM_PID");
 101   _atoms[net_wm_handled_icons] = create("_NET_WM_HANDLED_ICONS");
 102
 103   _atoms[net_wm_ping] = create("_NET_WM_PING");
 104 }
 105
 106
 107 /*
 108  * clean up the class' members
 109  */
 110 XAtom::~XAtom() {
 111   while (!_support_windows.empty()) {
 112     // make sure we aren't fucking with this somewhere
 113     assert(_support_windows.back() != None);
 114     XDestroyWindow(_display, _support_windows.back());
 115     _support_windows.pop_back();
 116   }
 117 }
 118
 119
 120 /*
 121  * Returns an atom from the Xserver, creating it if necessary.
 122  */
 123 Atom XAtom::create(const char *name) const {
 124   return XInternAtom(_display, name, False);
 125 }
 126
 127
 128 /*
 129  * Sets which atoms are supported for NETWM, by Openbox, on the root window.
 130  */
 131 void XAtom::setSupported(const ScreenInfo *screen) {
 132   Window root = screen->getRootWindow();
 133
 134   // create the netwm support window
 135   Window w = XCreateSimpleWindow(_display, root, 0, 0, 1, 1, 0, 0, 0);
 136   assert(w != None);
 137   _support_windows.push_back(w);
 138
 139   // set supporting window
 140   setValue(root, net_supporting_wm_check, window, w);
 141
 142   //set properties on the supporting window
 143   setValue(w, net_wm_name, utf8, "Openbox");
 144   setValue(w, net_supporting_wm_check, window, w);
 145
 146   // we don't support any yet..
 147   // yes we do!
 148
 149   Atom supported[] = {
 150     _atoms[net_current_desktop],
 151     _atoms[net_number_of_desktops]
 152   };
 153   const int num_supported = sizeof(supported)/sizeof(Atom);
 154
 155   setValue(root, net_supported, atom, supported, num_supported);
 156 }
 157
 158
 159 /*
 160  * Internal setValue.
 161  * Sets a window property on a window, optionally appending to the existing
 162  * value.
 163  */
 164 void XAtom::setValue(Window win, Atom atom, Atom type,
 165                      unsigned char* data, int size, int nelements,
 166                      bool append) const {
 167   assert(win != None); assert(atom != None); assert(type != None);
 168   assert(data != (unsigned char *) 0);
 169   assert(size == 8 || size == 16 || size == 32);
 170   assert(nelements > 0);
 171   XChangeProperty(_display, win, atom, type, size,
 172                   (append ? PropModeAppend : PropModeReplace),
 173                   data, nelements);
 174 }
 175
 176
 177 /*
 178  * Set a 32-bit property value on a window.
 179  */
 180 void XAtom::setValue(Window win, Atoms atom, Atoms type,
 181                      unsigned long value) const {
 182   assert(atom >= 0 && atom < NUM_ATOMS);
 183   assert(type >= 0 && type < NUM_ATOMS);
 184   setValue(win, _atoms[atom], _atoms[type],
 185            reinterpret_cast<unsigned char*>(&value), 32, 1, false);
 186 }
 187
 188
 189 /*
 190  * Set an array of 32-bit properties value on a window.
 191  */
 192 void XAtom::setValue(Window win, Atoms atom, Atoms type,
 193                      unsigned long value[], int elements) const {
 194   assert(atom >= 0 && atom < NUM_ATOMS);
 195   assert(type >= 0 && type < NUM_ATOMS);
 196   setValue(win, _atoms[atom], _atoms[type],
 197            reinterpret_cast<unsigned char*>(value), 32, elements, false);
 198 }
 199
 200
 201 /*
 202  * Set an string property value on a window.
 203  */
 204 void XAtom::setValue(Window win, Atoms atom, StringType type,
 205                      const std::string &value) const {
 206   assert(atom >= 0 && atom < NUM_ATOMS);
 207   assert(type >= 0 && type < NUM_STRING_TYPE);
 208   assert(win != None); assert(_atoms[atom] != None);
 209
 210   const char *c = value.c_str();
 211   XTextProperty textprop;
 212   if (Success != XmbTextListToTextProperty(_display, const_cast<char**>(&c), 1,
 213                                            type == ansi ? XStringStyle :
 214 #ifdef X_HAVE_UTF8_STRING
 215                                            XUTF8StringStyle,
 216 #else
 217                                            XCompoundTextStyle,
 218 #endif
 219                                            &textprop)) {
 220     return;
 221   }
 222
 223   XSetTextProperty(_display, win, &textprop, _atoms[atom]);
 224
 225   XFree(textprop.value);
 226 }
 227
 228
 229 /*
 230  * Internal getValue function used by all of the typed getValue functions.
 231  * Gets an property's value from a window.
 232  * Returns true if the property was successfully retrieved; false if the
 233  * property did not exist on the window, or has a different type/size format
 234  * than the user tried to retrieve.
 235  */
 236 bool XAtom::getValue(Window win, Atom atom, Atom type,
 237                      unsigned long &nelements, unsigned char **value,
 238                      int size) const {
 239   assert(win != None); assert(atom != None); assert(type != None);
 240   assert(size == 8 || size == 16 || size == 32);
 241   unsigned char *c_val;        // value alloc'd with c malloc
 242   Atom ret_type;
 243   int ret_size;
 244   unsigned long ret_bytes;
 245   // try get the first element
 246   XGetWindowProperty(_display, win, atom, 0l, 1l, False, AnyPropertyType,
 247                      &ret_type, &ret_size, &nelements, &ret_bytes, &c_val);
 248   if (ret_type == None)
 249     // the property does not exist on the window
 250     return false;
 251   if (ret_type != type || ret_size != size) {
 252     // wrong data in property
 253     XFree(c_val);
 254     return false;
 255   }
 256   // the data is correct, now, is there more than 1 element?
 257   if (ret_bytes == 0) {
 258     // we got the whole property's value
 259     *value = new unsigned char[nelements * size/8 + 1];
 260     memcpy(*value, c_val, nelements * size/8 + 1);
 261     XFree(c_val);
 262     return true;
 263   }
 264   // get the entire property since it is larger than one long
 265   free(c_val);
 266   // the number of longs that need to be retreived to get the property's entire
 267   // value. The last + 1 is the first long that we retrieved above.
 268   const int remain = (ret_bytes - 1)/sizeof(long) + 1 + 1;
 269   XGetWindowProperty(_display, win, atom, 0l, remain, False, type, &ret_type,
 270                      &ret_size, &nelements, &ret_bytes, &c_val);
 271   assert(ret_bytes == 0);
 272   *value = new unsigned char[nelements * size/8 + 1];
 273   memcpy(*value, c_val, nelements * size/8 + 1);
 274   XFree(c_val);
 275   return true;
 276 }
 277
 278
 279 /*
 280  * Gets a 32-bit property's value from a window.
 281  */
 282 bool XAtom::getValue(Window win, Atoms atom, Atoms type,
 283                          unsigned long &nelements,
 284                          unsigned long **value) const {
 285   assert(atom >= 0 && atom < NUM_ATOMS);
 286   assert(type >= 0 && type < NUM_ATOMS);
 287   return getValue(win, _atoms[atom], _atoms[type], nelements,
 288                   reinterpret_cast<unsigned char **>(value), 32);
 289 }
 290
 291
 292 /*
 293  * Gets an string property's value from a window.
 294  */
 295 bool XAtom::getValue(Window win, Atoms atom, StringType type,
 296                      std::string &value) const {
 297   assert(atom >= 0 && atom < NUM_ATOMS);
 298   assert(type >= 0 && type < NUM_STRING_TYPE);
 299   assert(win != None); assert(_atoms[atom] != None);
 300
 301   XTextProperty textprop;
 302   if (0 == XGetTextProperty(_display, win, &textprop, _atoms[atom]))
 303     return false;
 304
 305   int ret;
 306   int count;
 307   char **list;
 308   if (type == ansi) {
 309       ret = XmbTextPropertyToTextList(_display, &textprop, &list, &count);
 310   } else {
 311 #ifdef X_HAVE_UTF8_STRING
 312     ret = Xutf8TextPropertyToTextList(_display, &textprop, &list, &count);
 313 #else
 314     ret = XmbTextPropertyToTextList(_display, &textprop, &list, &count);
 315 #endif
 316   }
 317
 318   if (ret != Success || count < 1) {
 319     XFree(textprop.value);
 320     return false;
 321   }
 322
 323   value = list[0];
 324
 325   XFreeStringList(list);
 326   XFree(textprop.value);
 327   return true;
 328 }
 329
 330
 331
 332
 333 /*
 334  * Removes a property entirely from a window.
 335  */
 336 void XAtom::eraseValue(Window win, Atoms atom) const {
 337   assert(atom >= 0 && atom < NUM_ATOMS);
 338   XDeleteProperty(_display, win, _atoms[atom]);
 339 }