Dogcows Code - chaz/openbox/blob - otk/property.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef    HAVE_CONFIG_H
   4 #  include "../config.h"
   5 #endif // HAVE_CONFIG_H
   6
   7 #include "property.hh"
   8 #include "display.hh"
   9
  10 extern "C" {
  11 #include <assert.h>
  12 }
  13
  14 #include <algorithm>
  15
  16 namespace otk {
  17
  18 Property::Property()
  19 {
  20   assert(Display::display);
  21
  22   // make sure asserts fire if there is a problem
  23   memset(_atoms, 0, sizeof(_atoms));
  24
  25   _atoms[Atom_Cardinal] = XA_CARDINAL;
  26   _atoms[Atom_Window] = XA_WINDOW;
  27   _atoms[Atom_Pixmap] = XA_PIXMAP;
  28   _atoms[Atom_Atom] = XA_ATOM;
  29   _atoms[Atom_String] = XA_STRING;
  30   _atoms[Atom_Utf8] = create("UTF8_STRING");
  31
  32   _atoms[openbox_pid] = create("_OPENBOX_PID");
  33
  34   _atoms[wm_colormap_windows] = create("WM_COLORMAP_WINDOWS");
  35   _atoms[wm_protocols] = create("WM_PROTOCOLS");
  36   _atoms[wm_state] = create("WM_STATE");
  37   _atoms[wm_change_state] = create("WM_CHANGE_STATE");
  38   _atoms[wm_delete_window] = create("WM_DELETE_WINDOW");
  39   _atoms[wm_take_focus] = create("WM_TAKE_FOCUS");
  40   _atoms[wm_name] = create("WM_NAME");
  41   _atoms[wm_icon_name] = create("WM_ICON_NAME");
  42   _atoms[wm_class] = create("WM_CLASS");
  43   _atoms[wm_window_role] = create("WM_WINDOW_ROLE");
  44   _atoms[motif_wm_hints] = create("_MOTIF_WM_HINTS");
  45   _atoms[blackbox_hints] = create("_BLACKBOX_HINTS");
  46   _atoms[blackbox_attributes] = create("_BLACKBOX_ATTRIBUTES");
  47   _atoms[blackbox_change_attributes] = create("_BLACKBOX_CHANGE_ATTRIBUTES");
  48   _atoms[blackbox_structure_messages] = create("_BLACKBOX_STRUCTURE_MESSAGES");
  49   _atoms[blackbox_notify_startup] = create("_BLACKBOX_NOTIFY_STARTUP");
  50   _atoms[blackbox_notify_window_add] = create("_BLACKBOX_NOTIFY_WINDOW_ADD");
  51   _atoms[blackbox_notify_window_del] = create("_BLACKBOX_NOTIFY_WINDOW_DEL");
  52   _atoms[blackbox_notify_current_workspace] =
  53     create("_BLACKBOX_NOTIFY_CURRENT_WORKSPACE");
  54   _atoms[blackbox_notify_workspace_count] =
  55     create("_BLACKBOX_NOTIFY_WORKSPACE_COUNT");
  56   _atoms[blackbox_notify_window_focus] =
  57     create("_BLACKBOX_NOTIFY_WINDOW_FOCUS");
  58   _atoms[blackbox_notify_window_raise] =
  59     create("_BLACKBOX_NOTIFY_WINDOW_RAISE");
  60   _atoms[blackbox_notify_window_lower] =
  61     create("_BLACKBOX_NOTIFY_WINDOW_LOWER");
  62
  63   _atoms[blackbox_change_workspace] = create("_BLACKBOX_CHANGE_WORKSPACE");
  64   _atoms[blackbox_change_window_focus] =
  65     create("_BLACKBOX_CHANGE_WINDOW_FOCUS");
  66   _atoms[blackbox_cycle_window_focus] = create("_BLACKBOX_CYCLE_WINDOW_FOCUS");
  67
  68   _atoms[openbox_show_root_menu] = create("_OPENBOX_SHOW_ROOT_MENU");
  69   _atoms[openbox_show_workspace_menu] = create("_OPENBOX_SHOW_WORKSPACE_MENU");
  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_visible_name] = create("_NET_WM_VISIBLE_NAME");
  90   _atoms[net_wm_icon_name] = create("_NET_WM_ICON_NAME");
  91   _atoms[net_wm_visible_icon_name] = create("_NET_WM_VISIBLE_ICON_NAME");
  92   _atoms[net_wm_desktop] = create("_NET_WM_DESKTOP");
  93   _atoms[net_wm_window_type] = create("_NET_WM_WINDOW_TYPE");
  94   _atoms[net_wm_state] = create("_NET_WM_STATE");
  95   _atoms[net_wm_strut] = create("_NET_WM_STRUT");
  96 //  _atoms[net_wm_icon_geometry] = create("_NET_WM_ICON_GEOMETRY");
  97 //  _atoms[net_wm_icon] = create("_NET_WM_ICON");
  98 //  _atoms[net_wm_pid] = create("_NET_WM_PID");
  99 //  _atoms[net_wm_handled_icons] = create("_NET_WM_HANDLED_ICONS");
 100   _atoms[net_wm_allowed_actions] = create("_NET_WM_ALLOWED_ACTIONS");
 101
 102 //  _atoms[net_wm_ping] = create("_NET_WM_PING");
 103
 104   _atoms[net_wm_window_type_desktop] = create("_NET_WM_WINDOW_TYPE_DESKTOP");
 105   _atoms[net_wm_window_type_dock] = create("_NET_WM_WINDOW_TYPE_DOCK");
 106   _atoms[net_wm_window_type_toolbar] = create("_NET_WM_WINDOW_TYPE_TOOLBAR");
 107   _atoms[net_wm_window_type_menu] = create("_NET_WM_WINDOW_TYPE_MENU");
 108   _atoms[net_wm_window_type_utility] = create("_NET_WM_WINDOW_TYPE_UTILITY");
 109   _atoms[net_wm_window_type_splash] = create("_NET_WM_WINDOW_TYPE_SPLASH");
 110   _atoms[net_wm_window_type_dialog] = create("_NET_WM_WINDOW_TYPE_DIALOG");
 111   _atoms[net_wm_window_type_normal] = create("_NET_WM_WINDOW_TYPE_NORMAL");
 112
 113   _atoms[net_wm_moveresize_size_topleft] =
 114     create("_NET_WM_MOVERESIZE_SIZE_TOPLEFT");
 115   _atoms[net_wm_moveresize_size_topright] =
 116     create("_NET_WM_MOVERESIZE_SIZE_TOPRIGHT");
 117   _atoms[net_wm_moveresize_size_bottomleft] =
 118     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT");
 119   _atoms[net_wm_moveresize_size_bottomright] =
 120     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT");
 121   _atoms[net_wm_moveresize_move] =
 122     create("_NET_WM_MOVERESIZE_MOVE");
 123
 124   _atoms[net_wm_action_move] = create("_NET_WM_ACTION_MOVE");
 125   _atoms[net_wm_action_resize] = create("_NET_WM_ACTION_RESIZE");
 126   _atoms[net_wm_action_shade] = create("_NET_WM_ACTION_SHADE");
 127   _atoms[net_wm_action_maximize_horz] = create("_NET_WM_ACTION_MAXIMIZE_HORZ");
 128   _atoms[net_wm_action_maximize_vert] = create("_NET_WM_ACTION_MAXIMIZE_VERT");
 129   _atoms[net_wm_action_change_desktop] =
 130     create("_NET_WM_ACTION_CHANGE_DESKTOP");
 131   _atoms[net_wm_action_close] = create("_NET_WM_ACTION_CLOSE");
 132
 133   _atoms[net_wm_state_modal] = create("_NET_WM_STATE_MODAL");
 134   _atoms[net_wm_state_sticky] = create("_NET_WM_STATE_STICKY");
 135   _atoms[net_wm_state_maximized_vert] = create("_NET_WM_STATE_MAXIMIZED_VERT");
 136   _atoms[net_wm_state_maximized_horz] = create("_NET_WM_STATE_MAXIMIZED_HORZ");
 137   _atoms[net_wm_state_shaded] = create("_NET_WM_STATE_SHADED");
 138   _atoms[net_wm_state_skip_taskbar] = create("_NET_WM_STATE_SKIP_TASKBAR");
 139   _atoms[net_wm_state_skip_pager] = create("_NET_WM_STATE_SKIP_PAGER");
 140   _atoms[net_wm_state_hidden] = create("_NET_WM_STATE_HIDDEN");
 141   _atoms[net_wm_state_fullscreen] = create("_NET_WM_STATE_FULLSCREEN");
 142   _atoms[net_wm_state_above] = create("_NET_WM_STATE_ABOVE");
 143   _atoms[net_wm_state_below] = create("_NET_WM_STATE_BELOW");
 144
 145   _atoms[kde_net_system_tray_windows] = create("_KDE_NET_SYSTEM_TRAY_WINDOWS");
 146   _atoms[kde_net_wm_system_tray_window_for] =
 147     create("_KDE_NET_WM_SYSTEM_TRAY_WINDOW_FOR");
 148   _atoms[kde_net_wm_window_type_override] =
 149     create("_KDE_NET_WM_WINDOW_TYPE_OVERRIDE");
 150 }
 151
 152
 153 /*
 154  * clean up the class' members
 155  */
 156 Property::~Property()
 157 {
 158 }
 159
 160
 161 /*
 162  * Returns an atom from the Xserver, creating it if necessary.
 163  */
 164 Atom Property::create(const char *name) const
 165 {
 166   Atom a = XInternAtom(Display::display, name, False);
 167   assert(a);
 168   return a;
 169 }
 170
 171
 172 /*
 173  * Internal set.
 174  * Sets a window property on a window, optionally appending to the existing
 175  * value.
 176  */
 177 void Property::set(Window win, Atom atom, Atom type,
 178                           unsigned char* data, int size, int nelements,
 179                           bool append) const
 180 {
 181   assert(win != None); assert(atom != None); assert(type != None);
 182   assert(nelements == 0 || (nelements > 0 && data != (unsigned char *) 0));
 183   assert(size == 8 || size == 16 || size == 32);
 184   XChangeProperty(Display::display, win, atom, type, size,
 185                   (append ? PropModeAppend : PropModeReplace),
 186                   data, nelements);
 187 }
 188
 189
 190 /*
 191  * Set a 32-bit property value on a window.
 192  */
 193 void Property::set(Window win, Atoms atom, Atoms type,
 194                           unsigned long value) const
 195 {
 196   assert(atom >= 0 && atom < NUM_ATOMS);
 197   assert(type >= 0 && type < NUM_ATOMS);
 198   set(win, _atoms[atom], _atoms[type],
 199            reinterpret_cast<unsigned char*>(&value), 32, 1, False);
 200 }
 201
 202
 203 /*
 204  * Set an array of 32-bit properties value on a window.
 205  */
 206 void Property::set(Window win, Atoms atom, Atoms type,
 207                           unsigned long value[], int elements) const
 208 {
 209   assert(atom >= 0 && atom < NUM_ATOMS);
 210   assert(type >= 0 && type < NUM_ATOMS);
 211   set(win, _atoms[atom], _atoms[type],
 212       reinterpret_cast<unsigned char*>(value), 32, elements, False);
 213 }
 214
 215
 216 /*
 217  * Set an string property value on a window.
 218  */
 219 void Property::set(Window win, Atoms atom, StringType type,
 220                           const std::string &value) const
 221 {
 222   assert(atom >= 0 && atom < NUM_ATOMS);
 223   assert(type >= 0 && type < NUM_STRING_TYPE);
 224
 225   Atom t;
 226   switch (type) {
 227   case ascii: t = _atoms[Atom_String]; break;
 228   case utf8:  t = _atoms[Atom_Utf8]; break;
 229   default: assert(False); return; // unhandled StringType
 230   }
 231   set(win, _atoms[atom], t,
 232       reinterpret_cast<unsigned char *>(const_cast<char *>(value.c_str())),
 233       8, value.size() + 1, False); // add 1 to the size to include the null
 234 }
 235
 236
 237 /*
 238  * Set an array of string property values on a window.
 239  */
 240 void Property::set(Window win, Atoms atom, StringType type,
 241                      const StringVect &strings) const
 242 {
 243   assert(atom >= 0 && atom < NUM_ATOMS);
 244   assert(type >= 0 && type < NUM_STRING_TYPE);
 245
 246   Atom t;
 247   switch (type) {
 248   case ascii: t = _atoms[Atom_String]; break;
 249   case utf8:  t = _atoms[Atom_Utf8]; break;
 250   default: assert(False); return; // unhandled StringType
 251   }
 252
 253   std::string value;
 254
 255   StringVect::const_iterator it = strings.begin();
 256   const StringVect::const_iterator end = strings.end();
 257   for (; it != end; ++it)
 258       value += *it + '\0';
 259
 260   set(win, _atoms[atom], t,
 261       reinterpret_cast<unsigned char *>(const_cast<char *>(value.c_str())),
 262       8, value.size(), False);
 263 }
 264
 265
 266 /*
 267  * Internal get function used by all of the typed get functions.
 268  * Gets an property's value from a window.
 269  * Returns True if the property was successfully retrieved; False if the
 270  * property did not exist on the window, or has a different type/size format
 271  * than the user tried to retrieve.
 272  */
 273 bool Property::get(Window win, Atom atom, Atom type,
 274                           unsigned long *nelements, unsigned char **value,
 275                           int size) const
 276 {
 277   assert(win != None); assert(atom != None); assert(type != None);
 278   assert(size == 8 || size == 16 || size == 32);
 279   assert(*nelements > 0);
 280   unsigned char *c_val = 0;        // value alloc'd in Xlib, must be XFree()d
 281   Atom ret_type;
 282   int ret_size;
 283   unsigned long ret_bytes;
 284   int result;
 285   unsigned long maxread = *nelements;
 286   bool ret = False;
 287
 288   // try get the first element
 289   result = XGetWindowProperty(Display::display, win, atom, 0l, 1l,
 290                               False, AnyPropertyType, &ret_type, &ret_size,
 291                               nelements, &ret_bytes, &c_val);
 292   ret = (result == Success && ret_type == type && ret_size == size &&
 293          *nelements > 0);
 294   if (ret) {
 295     if (ret_bytes == 0 || maxread <= *nelements) {
 296       // we got the whole property's value
 297       *value = new unsigned char[*nelements * size/8 + 1];
 298       memcpy(*value, c_val, *nelements * size/8 + 1);
 299     } else {
 300       // get the entire property since it is larger than one long
 301       XFree(c_val);
 302       // the number of longs that need to be retreived to get the property's
 303       // entire value. The last + 1 is the first long that we retrieved above.
 304       int remain = (ret_bytes - 1)/sizeof(long) + 1 + 1;
 305       if (remain > size/8 * (signed)maxread) // dont get more than the max
 306         remain = size/8 * (signed)maxread;
 307       result = XGetWindowProperty(Display::display, win, atom, 0l,
 308                                   remain, False, type, &ret_type, &ret_size,
 309                                   nelements, &ret_bytes, &c_val);
 310       ret = (result == Success && ret_type == type && ret_size == size &&
 311              ret_bytes == 0);
 312       /*
 313         If the property has changed type/size, or has grown since our first
 314         read of it, then stop here and try again. If it shrank, then this will
 315         still work.
 316       */
 317       if (! ret)
 318         return get(win, atom, type, &maxread, value, size);
 319
 320       *value = new unsigned char[*nelements * size/8 + 1];
 321       memcpy(*value, c_val, *nelements * size/8 + 1);
 322     }
 323   }
 324   if (c_val) XFree(c_val);
 325   return ret;
 326 }
 327
 328
 329 /*
 330  * Gets a 32-bit property's value from a window.
 331  */
 332 bool Property::get(Window win, Atoms atom, Atoms type,
 333                           unsigned long *nelements,
 334                           unsigned long **value) const
 335 {
 336   assert(atom >= 0 && atom < NUM_ATOMS);
 337   assert(type >= 0 && type < NUM_ATOMS);
 338   return get(win, _atoms[atom], _atoms[type], nelements,
 339                   reinterpret_cast<unsigned char **>(value), 32);
 340 }
 341
 342
 343 /*
 344  * Gets a single 32-bit property's value from a window.
 345  */
 346 bool Property::get(Window win, Atoms atom, Atoms type,
 347                      unsigned long *value) const
 348 {
 349   assert(atom >= 0 && atom < NUM_ATOMS);
 350   assert(type >= 0 && type < NUM_ATOMS);
 351   unsigned long *temp;
 352   unsigned long num = 1;
 353   if (! get(win, _atoms[atom], _atoms[type], &num,
 354                  reinterpret_cast<unsigned char **>(&temp), 32))
 355     return False;
 356   *value = temp[0];
 357   delete [] temp;
 358   return True;
 359 }
 360
 361
 362 /*
 363  * Gets an string property's value from a window.
 364  */
 365 bool Property::get(Window win, Atoms atom, StringType type,
 366                      std::string *value) const
 367 {
 368   unsigned long n = 1;
 369   StringVect s;
 370   if (get(win, atom, type, &n, &s)) {
 371     *value = s[0];
 372     return True;
 373   }
 374   return False;
 375 }
 376
 377
 378 bool Property::get(Window win, Atoms atom, StringType type,
 379                      unsigned long *nelements, StringVect *strings) const
 380 {
 381   assert(atom >= 0 && atom < NUM_ATOMS);
 382   assert(type >= 0 && type < NUM_STRING_TYPE);
 383   assert(win != None); assert(_atoms[atom] != None);
 384   assert(*nelements > 0);
 385
 386   Atom t;
 387   switch (type) {
 388   case ascii: t = _atoms[Atom_String]; break;
 389   case utf8:  t = _atoms[Atom_Utf8]; break;
 390   default: assert(False); return False; // unhandled StringType
 391   }
 392
 393   unsigned char *value;
 394   unsigned long elements = (unsigned) -1;
 395   if (!get(win, _atoms[atom], t, &elements, &value, 8) || elements < 1)
 396     return False;
 397
 398   std::string s(reinterpret_cast<char *>(value), elements);
 399   delete [] value;
 400
 401   std::string::const_iterator it = s.begin(), end = s.end();
 402   unsigned long num = 0;
 403   while(num < *nelements) {
 404     std::string::const_iterator tmp = it; // current string.begin()
 405     it = std::find(tmp, end, '\0');       // look for null between tmp and end
 406     strings->push_back(std::string(tmp, it));   // s[tmp:it)
 407     ++num;
 408     if (it == end) break;
 409     ++it;
 410     if (it == end) break;
 411   }
 412
 413   *nelements = num;
 414
 415   return True;
 416 }
 417
 418
 419 /*
 420  * Removes a property entirely from a window.
 421  */
 422 void Property::erase(Window win, Atoms atom) const
 423 {
 424   assert(atom >= 0 && atom < NUM_ATOMS);
 425   XDeleteProperty(Display::display, win, _atoms[atom]);
 426 }
 427
 428 }