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 OBProperty::OBProperty()
  19 {
  20   assert(OBDisplay::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 #ifdef    HAVE_GETPID
  33   _atoms[blackbox_pid] = create("_BLACKBOX_PID");
  34 #endif // HAVE_GETPID
  35
  36   _atoms[wm_colormap_windows] = create("WM_COLORMAP_WINDOWS");
  37   _atoms[wm_protocols] = create("WM_PROTOCOLS");
  38   _atoms[wm_state] = create("WM_STATE");
  39   _atoms[wm_change_state] = create("WM_CHANGE_STATE");
  40   _atoms[wm_delete_window] = create("WM_DELETE_WINDOW");
  41   _atoms[wm_take_focus] = create("WM_TAKE_FOCUS");
  42   _atoms[wm_name] = create("WM_NAME");
  43   _atoms[wm_icon_name] = create("WM_ICON_NAME");
  44   _atoms[wm_class] = create("WM_CLASS");
  45   _atoms[motif_wm_hints] = create("_MOTIF_WM_HINTS");
  46   _atoms[blackbox_hints] = create("_BLACKBOX_HINTS");
  47   _atoms[blackbox_attributes] = create("_BLACKBOX_ATTRIBUTES");
  48   _atoms[blackbox_change_attributes] = create("_BLACKBOX_CHANGE_ATTRIBUTES");
  49   _atoms[blackbox_structure_messages] = create("_BLACKBOX_STRUCTURE_MESSAGES");
  50   _atoms[blackbox_notify_startup] = create("_BLACKBOX_NOTIFY_STARTUP");
  51   _atoms[blackbox_notify_window_add] = create("_BLACKBOX_NOTIFY_WINDOW_ADD");
  52   _atoms[blackbox_notify_window_del] = create("_BLACKBOX_NOTIFY_WINDOW_DEL");
  53   _atoms[blackbox_notify_current_workspace] =
  54     create("_BLACKBOX_NOTIFY_CURRENT_WORKSPACE");
  55   _atoms[blackbox_notify_workspace_count] =
  56     create("_BLACKBOX_NOTIFY_WORKSPACE_COUNT");
  57   _atoms[blackbox_notify_window_focus] =
  58     create("_BLACKBOX_NOTIFY_WINDOW_FOCUS");
  59   _atoms[blackbox_notify_window_raise] =
  60     create("_BLACKBOX_NOTIFY_WINDOW_RAISE");
  61   _atoms[blackbox_notify_window_lower] =
  62     create("_BLACKBOX_NOTIFY_WINDOW_LOWER");
  63
  64   _atoms[blackbox_change_workspace] = create("_BLACKBOX_CHANGE_WORKSPACE");
  65   _atoms[blackbox_change_window_focus] =
  66     create("_BLACKBOX_CHANGE_WINDOW_FOCUS");
  67   _atoms[blackbox_cycle_window_focus] = create("_BLACKBOX_CYCLE_WINDOW_FOCUS");
  68
  69   _atoms[openbox_show_root_menu] = create("_OPENBOX_SHOW_ROOT_MENU");
  70   _atoms[openbox_show_workspace_menu] = create("_OPENBOX_SHOW_WORKSPACE_MENU");
  71
  72   _atoms[net_supported] = create("_NET_SUPPORTED");
  73   _atoms[net_client_list] = create("_NET_CLIENT_LIST");
  74   _atoms[net_client_list_stacking] = create("_NET_CLIENT_LIST_STACKING");
  75   _atoms[net_number_of_desktops] = create("_NET_NUMBER_OF_DESKTOPS");
  76   _atoms[net_desktop_geometry] = create("_NET_DESKTOP_GEOMETRY");
  77   _atoms[net_desktop_viewport] = create("_NET_DESKTOP_VIEWPORT");
  78   _atoms[net_current_desktop] = create("_NET_CURRENT_DESKTOP");
  79   _atoms[net_desktop_names] = create("_NET_DESKTOP_NAMES");
  80   _atoms[net_active_window] = create("_NET_ACTIVE_WINDOW");
  81   _atoms[net_workarea] = create("_NET_WORKAREA");
  82   _atoms[net_supporting_wm_check] = create("_NET_SUPPORTING_WM_CHECK");
  83 //  _atoms[net_virtual_roots] = create("_NET_VIRTUAL_ROOTS");
  84
  85   _atoms[net_close_window] = create("_NET_CLOSE_WINDOW");
  86   _atoms[net_wm_moveresize] = create("_NET_WM_MOVERESIZE");
  87
  88 //  _atoms[net_properties] = create("_NET_PROPERTIES");
  89   _atoms[net_wm_name] = create("_NET_WM_NAME");
  90   _atoms[net_wm_visible_name] = create("_NET_WM_VISIBLE_NAME");
  91   _atoms[net_wm_icon_name] = create("_NET_WM_ICON_NAME");
  92   _atoms[net_wm_visible_icon_name] = create("_NET_WM_VISIBLE_ICON_NAME");
  93   _atoms[net_wm_desktop] = create("_NET_WM_DESKTOP");
  94   _atoms[net_wm_window_type] = create("_NET_WM_WINDOW_TYPE");
  95   _atoms[net_wm_state] = create("_NET_WM_STATE");
  96   _atoms[net_wm_strut] = create("_NET_WM_STRUT");
  97 //  _atoms[net_wm_icon_geometry] = create("_NET_WM_ICON_GEOMETRY");
  98 //  _atoms[net_wm_icon] = create("_NET_WM_ICON");
  99 //  _atoms[net_wm_pid] = create("_NET_WM_PID");
 100 //  _atoms[net_wm_handled_icons] = create("_NET_WM_HANDLED_ICONS");
 101   _atoms[net_wm_allowed_actions] = create("_NET_WM_ALLOWED_ACTIONS");
 102
 103 //  _atoms[net_wm_ping] = create("_NET_WM_PING");
 104
 105   _atoms[net_wm_window_type_desktop] = create("_NET_WM_WINDOW_TYPE_DESKTOP");
 106   _atoms[net_wm_window_type_dock] = create("_NET_WM_WINDOW_TYPE_DOCK");
 107   _atoms[net_wm_window_type_toolbar] = create("_NET_WM_WINDOW_TYPE_TOOLBAR");
 108   _atoms[net_wm_window_type_menu] = create("_NET_WM_WINDOW_TYPE_MENU");
 109   _atoms[net_wm_window_type_utility] = create("_NET_WM_WINDOW_TYPE_UTILITY");
 110   _atoms[net_wm_window_type_splash] = create("_NET_WM_WINDOW_TYPE_SPLASH");
 111   _atoms[net_wm_window_type_dialog] = create("_NET_WM_WINDOW_TYPE_DIALOG");
 112   _atoms[net_wm_window_type_normal] = create("_NET_WM_WINDOW_TYPE_NORMAL");
 113
 114   _atoms[net_wm_moveresize_size_topleft] =
 115     create("_NET_WM_MOVERESIZE_SIZE_TOPLEFT");
 116   _atoms[net_wm_moveresize_size_topright] =
 117     create("_NET_WM_MOVERESIZE_SIZE_TOPRIGHT");
 118   _atoms[net_wm_moveresize_size_bottomleft] =
 119     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT");
 120   _atoms[net_wm_moveresize_size_bottomright] =
 121     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT");
 122   _atoms[net_wm_moveresize_move] =
 123     create("_NET_WM_MOVERESIZE_MOVE");
 124
 125   _atoms[net_wm_action_move] = create("_NET_WM_ACTION_MOVE");
 126   _atoms[net_wm_action_resize] = create("_NET_WM_ACTION_RESIZE");
 127   _atoms[net_wm_action_shade] = create("_NET_WM_ACTION_SHADE");
 128   _atoms[net_wm_action_maximize_horz] = create("_NET_WM_ACTION_MAXIMIZE_HORZ");
 129   _atoms[net_wm_action_maximize_vert] = create("_NET_WM_ACTION_MAXIMIZE_VERT");
 130   _atoms[net_wm_action_change_desktop] =
 131     create("_NET_WM_ACTION_CHANGE_DESKTOP");
 132   _atoms[net_wm_action_close] = create("_NET_WM_ACTION_CLOSE");
 133
 134   _atoms[net_wm_state_modal] = create("_NET_WM_STATE_MODAL");
 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
 143   _atoms[kde_net_system_tray_windows] = create("_KDE_NET_SYSTEM_TRAY_WINDOWS");
 144   _atoms[kde_net_wm_system_tray_window_for] =
 145     create("_KDE_NET_WM_SYSTEM_TRAY_WINDOW_FOR");
 146   _atoms[kde_net_wm_window_type_override] =
 147     create("_KDE_NET_WM_WINDOW_TYPE_OVERRIDE");
 148 }
 149
 150
 151 /*
 152  * clean up the class' members
 153  */
 154 OBProperty::~OBProperty()
 155 {
 156 }
 157
 158
 159 /*
 160  * Returns an atom from the Xserver, creating it if necessary.
 161  */
 162 Atom OBProperty::create(const char *name) const
 163 {
 164   return XInternAtom(OBDisplay::display, name, False);
 165 }
 166
 167
 168 /*
 169  * Internal set.
 170  * Sets a window property on a window, optionally appending to the existing
 171  * value.
 172  */
 173 void OBProperty::set(Window win, Atom atom, Atom type,
 174                           unsigned char* data, int size, int nelements,
 175                           bool append) const
 176 {
 177   assert(win != None); assert(atom != None); assert(type != None);
 178   assert(nelements == 0 || (nelements > 0 && data != (unsigned char *) 0));
 179   assert(size == 8 || size == 16 || size == 32);
 180   XChangeProperty(OBDisplay::display, win, atom, type, size,
 181                   (append ? PropModeAppend : PropModeReplace),
 182                   data, nelements);
 183 }
 184
 185
 186 /*
 187  * Set a 32-bit property value on a window.
 188  */
 189 void OBProperty::set(Window win, Atoms atom, Atoms type,
 190                           unsigned long value) const
 191 {
 192   assert(atom >= 0 && atom < NUM_ATOMS);
 193   assert(type >= 0 && type < NUM_ATOMS);
 194   set(win, _atoms[atom], _atoms[type],
 195            reinterpret_cast<unsigned char*>(&value), 32, 1, False);
 196 }
 197
 198
 199 /*
 200  * Set an array of 32-bit properties value on a window.
 201  */
 202 void OBProperty::set(Window win, Atoms atom, Atoms type,
 203                           unsigned long value[], int elements) const
 204 {
 205   assert(atom >= 0 && atom < NUM_ATOMS);
 206   assert(type >= 0 && type < NUM_ATOMS);
 207   set(win, _atoms[atom], _atoms[type],
 208       reinterpret_cast<unsigned char*>(value), 32, elements, False);
 209 }
 210
 211
 212 /*
 213  * Set an string property value on a window.
 214  */
 215 void OBProperty::set(Window win, Atoms atom, StringType type,
 216                           const std::string &value) const
 217 {
 218   assert(atom >= 0 && atom < NUM_ATOMS);
 219   assert(type >= 0 && type < NUM_STRING_TYPE);
 220
 221   Atom t;
 222   switch (type) {
 223   case ascii: t = _atoms[Atom_String]; break;
 224   case utf8:  t = _atoms[Atom_Utf8]; break;
 225   default: assert(False); return; // unhandled StringType
 226   }
 227   set(win, _atoms[atom], t,
 228       reinterpret_cast<unsigned char *>(const_cast<char *>(value.c_str())),
 229       8, value.size() + 1, False); // add 1 to the size to include the null
 230 }
 231
 232
 233 /*
 234  * Set an array of string property values on a window.
 235  */
 236 void OBProperty::set(Window win, Atoms atom, StringType type,
 237                      const StringVect &strings) const
 238 {
 239   assert(atom >= 0 && atom < NUM_ATOMS);
 240   assert(type >= 0 && type < NUM_STRING_TYPE);
 241
 242   Atom t;
 243   switch (type) {
 244   case ascii: t = _atoms[Atom_String]; break;
 245   case utf8:  t = _atoms[Atom_Utf8]; break;
 246   default: assert(False); return; // unhandled StringType
 247   }
 248
 249   std::string value;
 250
 251   StringVect::const_iterator it = strings.begin();
 252   const StringVect::const_iterator end = strings.end();
 253   for (; it != end; ++it)
 254       value += *it + '\0';
 255
 256   set(win, _atoms[atom], t,
 257       reinterpret_cast<unsigned char *>(const_cast<char *>(value.c_str())),
 258       8, value.size(), False);
 259 }
 260
 261
 262 /*
 263  * Internal get function used by all of the typed get functions.
 264  * Gets an property's value from a window.
 265  * Returns True if the property was successfully retrieved; False if the
 266  * property did not exist on the window, or has a different type/size format
 267  * than the user tried to retrieve.
 268  */
 269 bool OBProperty::get(Window win, Atom atom, Atom type,
 270                           unsigned long *nelements, unsigned char **value,
 271                           int size) const
 272 {
 273   assert(win != None); assert(atom != None); assert(type != None);
 274   assert(size == 8 || size == 16 || size == 32);
 275   assert(*nelements > 0);
 276   unsigned char *c_val = 0;        // value alloc'd in Xlib, must be XFree()d
 277   Atom ret_type;
 278   int ret_size;
 279   unsigned long ret_bytes;
 280   int result;
 281   unsigned long maxread = *nelements;
 282   bool ret = False;
 283
 284   // try get the first element
 285   result = XGetWindowProperty(OBDisplay::display, win, atom, 0l, 1l,
 286                               False, AnyPropertyType, &ret_type, &ret_size,
 287                               nelements, &ret_bytes, &c_val);
 288   ret = (result == Success && ret_type == type && ret_size == size &&
 289          *nelements > 0);
 290   if (ret) {
 291     if (ret_bytes == 0 || maxread <= *nelements) {
 292       // we got the whole property's value
 293       *value = new unsigned char[*nelements * size/8 + 1];
 294       memcpy(*value, c_val, *nelements * size/8 + 1);
 295     } else {
 296       // get the entire property since it is larger than one long
 297       XFree(c_val);
 298       // the number of longs that need to be retreived to get the property's
 299       // entire value. The last + 1 is the first long that we retrieved above.
 300       int remain = (ret_bytes - 1)/sizeof(long) + 1 + 1;
 301       if (remain > size/8 * (signed)maxread) // dont get more than the max
 302         remain = size/8 * (signed)maxread;
 303       result = XGetWindowProperty(OBDisplay::display, win, atom, 0l,
 304                                   remain, False, type, &ret_type, &ret_size,
 305                                   nelements, &ret_bytes, &c_val);
 306       ret = (result == Success && ret_type == type && ret_size == size &&
 307              ret_bytes == 0);
 308       /*
 309         If the property has changed type/size, or has grown since our first
 310         read of it, then stop here and try again. If it shrank, then this will
 311         still work.
 312       */
 313       if (! ret)
 314         return get(win, atom, type, &maxread, value, size);
 315
 316       *value = new unsigned char[*nelements * size/8 + 1];
 317       memcpy(*value, c_val, *nelements * size/8 + 1);
 318     }
 319   }
 320   if (c_val) XFree(c_val);
 321   return ret;
 322 }
 323
 324
 325 /*
 326  * Gets a 32-bit property's value from a window.
 327  */
 328 bool OBProperty::get(Window win, Atoms atom, Atoms type,
 329                           unsigned long *nelements,
 330                           unsigned long **value) const
 331 {
 332   assert(atom >= 0 && atom < NUM_ATOMS);
 333   assert(type >= 0 && type < NUM_ATOMS);
 334   return get(win, _atoms[atom], _atoms[type], nelements,
 335                   reinterpret_cast<unsigned char **>(value), 32);
 336 }
 337
 338
 339 /*
 340  * Gets a single 32-bit property's value from a window.
 341  */
 342 bool OBProperty::get(Window win, Atoms atom, Atoms type,
 343                      unsigned long *value) const
 344 {
 345   assert(atom >= 0 && atom < NUM_ATOMS);
 346   assert(type >= 0 && type < NUM_ATOMS);
 347   unsigned long *temp;
 348   unsigned long num = 1;
 349   if (! get(win, _atoms[atom], _atoms[type], &num,
 350                  reinterpret_cast<unsigned char **>(&temp), 32))
 351     return False;
 352   *value = temp[0];
 353   delete [] temp;
 354   return True;
 355 }
 356
 357
 358 /*
 359  * Gets an string property's value from a window.
 360  */
 361 bool OBProperty::get(Window win, Atoms atom, StringType type,
 362                      std::string *value) const
 363 {
 364   unsigned long n = 1;
 365   StringVect s;
 366   if (get(win, atom, type, &n, &s)) {
 367     *value = s[0];
 368     return True;
 369   }
 370   return False;
 371 }
 372
 373
 374 bool OBProperty::get(Window win, Atoms atom, StringType type,
 375                      unsigned long *nelements, StringVect *strings) const
 376 {
 377   assert(atom >= 0 && atom < NUM_ATOMS);
 378   assert(type >= 0 && type < NUM_STRING_TYPE);
 379   assert(win != None); assert(_atoms[atom] != None);
 380   assert(*nelements > 0);
 381
 382   Atom t;
 383   switch (type) {
 384   case ascii: t = _atoms[Atom_String]; break;
 385   case utf8:  t = _atoms[Atom_Utf8]; break;
 386   default: assert(False); return False; // unhandled StringType
 387   }
 388
 389   unsigned char *value;
 390   unsigned long elements = (unsigned) -1;
 391   if (!get(win, _atoms[atom], t, &elements, &value, 8) || elements < 1)
 392     return False;
 393
 394   std::string s(reinterpret_cast<char *>(value), elements);
 395   delete [] value;
 396
 397   std::string::const_iterator it = s.begin(), end = s.end();
 398   unsigned long num = 0;
 399   while(num < *nelements) {
 400     std::string::const_iterator tmp = it; // current string.begin()
 401     it = std::find(tmp, end, '\0');       // look for null between tmp and end
 402     strings->push_back(std::string(tmp, it));   // s[tmp:it)
 403     ++num;
 404     if (it == end) break;
 405     ++it;
 406     if (it == end) break;
 407   }
 408
 409   *nelements = num;
 410
 411   return True;
 412 }
 413
 414
 415 /*
 416  * Removes a property entirely from a window.
 417  */
 418 void OBProperty::erase(Window win, Atoms atom) const
 419 {
 420   assert(atom >= 0 && atom < NUM_ATOMS);
 421   XDeleteProperty(OBDisplay::display, win, _atoms[atom]);
 422 }
 423
 424 }