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   _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[motif_wm_hints] = create("_MOTIF_WM_HINTS");
  44   _atoms[blackbox_hints] = create("_BLACKBOX_HINTS");
  45   _atoms[blackbox_attributes] = create("_BLACKBOX_ATTRIBUTES");
  46   _atoms[blackbox_change_attributes] = create("_BLACKBOX_CHANGE_ATTRIBUTES");
  47   _atoms[blackbox_structure_messages] = create("_BLACKBOX_STRUCTURE_MESSAGES");
  48   _atoms[blackbox_notify_startup] = create("_BLACKBOX_NOTIFY_STARTUP");
  49   _atoms[blackbox_notify_window_add] = create("_BLACKBOX_NOTIFY_WINDOW_ADD");
  50   _atoms[blackbox_notify_window_del] = create("_BLACKBOX_NOTIFY_WINDOW_DEL");
  51   _atoms[blackbox_notify_current_workspace] =
  52     create("_BLACKBOX_NOTIFY_CURRENT_WORKSPACE");
  53   _atoms[blackbox_notify_workspace_count] =
  54     create("_BLACKBOX_NOTIFY_WORKSPACE_COUNT");
  55   _atoms[blackbox_notify_window_focus] =
  56     create("_BLACKBOX_NOTIFY_WINDOW_FOCUS");
  57   _atoms[blackbox_notify_window_raise] =
  58     create("_BLACKBOX_NOTIFY_WINDOW_RAISE");
  59   _atoms[blackbox_notify_window_lower] =
  60     create("_BLACKBOX_NOTIFY_WINDOW_LOWER");
  61
  62   _atoms[blackbox_change_workspace] = create("_BLACKBOX_CHANGE_WORKSPACE");
  63   _atoms[blackbox_change_window_focus] =
  64     create("_BLACKBOX_CHANGE_WINDOW_FOCUS");
  65   _atoms[blackbox_cycle_window_focus] = create("_BLACKBOX_CYCLE_WINDOW_FOCUS");
  66
  67   _atoms[openbox_show_root_menu] = create("_OPENBOX_SHOW_ROOT_MENU");
  68   _atoms[openbox_show_workspace_menu] = create("_OPENBOX_SHOW_WORKSPACE_MENU");
  69
  70   _atoms[net_supported] = create("_NET_SUPPORTED");
  71   _atoms[net_client_list] = create("_NET_CLIENT_LIST");
  72   _atoms[net_client_list_stacking] = create("_NET_CLIENT_LIST_STACKING");
  73   _atoms[net_number_of_desktops] = create("_NET_NUMBER_OF_DESKTOPS");
  74   _atoms[net_desktop_geometry] = create("_NET_DESKTOP_GEOMETRY");
  75   _atoms[net_desktop_viewport] = create("_NET_DESKTOP_VIEWPORT");
  76   _atoms[net_current_desktop] = create("_NET_CURRENT_DESKTOP");
  77   _atoms[net_desktop_names] = create("_NET_DESKTOP_NAMES");
  78   _atoms[net_active_window] = create("_NET_ACTIVE_WINDOW");
  79   _atoms[net_workarea] = create("_NET_WORKAREA");
  80   _atoms[net_supporting_wm_check] = create("_NET_SUPPORTING_WM_CHECK");
  81 //  _atoms[net_virtual_roots] = create("_NET_VIRTUAL_ROOTS");
  82
  83   _atoms[net_close_window] = create("_NET_CLOSE_WINDOW");
  84   _atoms[net_wm_moveresize] = create("_NET_WM_MOVERESIZE");
  85
  86 //  _atoms[net_properties] = create("_NET_PROPERTIES");
  87   _atoms[net_wm_name] = create("_NET_WM_NAME");
  88   _atoms[net_wm_visible_name] = create("_NET_WM_VISIBLE_NAME");
  89   _atoms[net_wm_icon_name] = create("_NET_WM_ICON_NAME");
  90   _atoms[net_wm_visible_icon_name] = create("_NET_WM_VISIBLE_ICON_NAME");
  91   _atoms[net_wm_desktop] = create("_NET_WM_DESKTOP");
  92   _atoms[net_wm_window_type] = create("_NET_WM_WINDOW_TYPE");
  93   _atoms[net_wm_state] = create("_NET_WM_STATE");
  94   _atoms[net_wm_strut] = create("_NET_WM_STRUT");
  95 //  _atoms[net_wm_icon_geometry] = create("_NET_WM_ICON_GEOMETRY");
  96 //  _atoms[net_wm_icon] = create("_NET_WM_ICON");
  97 //  _atoms[net_wm_pid] = create("_NET_WM_PID");
  98 //  _atoms[net_wm_handled_icons] = create("_NET_WM_HANDLED_ICONS");
  99   _atoms[net_wm_allowed_actions] = create("_NET_WM_ALLOWED_ACTIONS");
 100
 101 //  _atoms[net_wm_ping] = create("_NET_WM_PING");
 102
 103   _atoms[net_wm_window_type_desktop] = create("_NET_WM_WINDOW_TYPE_DESKTOP");
 104   _atoms[net_wm_window_type_dock] = create("_NET_WM_WINDOW_TYPE_DOCK");
 105   _atoms[net_wm_window_type_toolbar] = create("_NET_WM_WINDOW_TYPE_TOOLBAR");
 106   _atoms[net_wm_window_type_menu] = create("_NET_WM_WINDOW_TYPE_MENU");
 107   _atoms[net_wm_window_type_utility] = create("_NET_WM_WINDOW_TYPE_UTILITY");
 108   _atoms[net_wm_window_type_splash] = create("_NET_WM_WINDOW_TYPE_SPLASH");
 109   _atoms[net_wm_window_type_dialog] = create("_NET_WM_WINDOW_TYPE_DIALOG");
 110   _atoms[net_wm_window_type_normal] = create("_NET_WM_WINDOW_TYPE_NORMAL");
 111
 112   _atoms[net_wm_moveresize_size_topleft] =
 113     create("_NET_WM_MOVERESIZE_SIZE_TOPLEFT");
 114   _atoms[net_wm_moveresize_size_topright] =
 115     create("_NET_WM_MOVERESIZE_SIZE_TOPRIGHT");
 116   _atoms[net_wm_moveresize_size_bottomleft] =
 117     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT");
 118   _atoms[net_wm_moveresize_size_bottomright] =
 119     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT");
 120   _atoms[net_wm_moveresize_move] =
 121     create("_NET_WM_MOVERESIZE_MOVE");
 122
 123   _atoms[net_wm_action_move] = create("_NET_WM_ACTION_MOVE");
 124   _atoms[net_wm_action_resize] = create("_NET_WM_ACTION_RESIZE");
 125   _atoms[net_wm_action_shade] = create("_NET_WM_ACTION_SHADE");
 126   _atoms[net_wm_action_maximize_horz] = create("_NET_WM_ACTION_MAXIMIZE_HORZ");
 127   _atoms[net_wm_action_maximize_vert] = create("_NET_WM_ACTION_MAXIMIZE_VERT");
 128   _atoms[net_wm_action_change_desktop] =
 129     create("_NET_WM_ACTION_CHANGE_DESKTOP");
 130   _atoms[net_wm_action_close] = create("_NET_WM_ACTION_CLOSE");
 131
 132   _atoms[net_wm_state_modal] = create("_NET_WM_STATE_MODAL");
 133   _atoms[net_wm_state_maximized_vert] = create("_NET_WM_STATE_MAXIMIZED_VERT");
 134   _atoms[net_wm_state_maximized_horz] = create("_NET_WM_STATE_MAXIMIZED_HORZ");
 135   _atoms[net_wm_state_shaded] = create("_NET_WM_STATE_SHADED");
 136   _atoms[net_wm_state_skip_taskbar] = create("_NET_WM_STATE_SKIP_TASKBAR");
 137   _atoms[net_wm_state_skip_pager] = create("_NET_WM_STATE_SKIP_PAGER");
 138   _atoms[net_wm_state_hidden] = create("_NET_WM_STATE_HIDDEN");
 139   _atoms[net_wm_state_fullscreen] = create("_NET_WM_STATE_FULLSCREEN");
 140   _atoms[net_wm_state_floating] = create("_NET_WM_STATE_FLOATING");
 141
 142   _atoms[kde_net_system_tray_windows] = create("_KDE_NET_SYSTEM_TRAY_WINDOWS");
 143   _atoms[kde_net_wm_system_tray_window_for] =
 144     create("_KDE_NET_WM_SYSTEM_TRAY_WINDOW_FOR");
 145   _atoms[kde_net_wm_window_type_override] =
 146     create("_KDE_NET_WM_WINDOW_TYPE_OVERRIDE");
 147 }
 148
 149
 150 /*
 151  * clean up the class' members
 152  */
 153 OBProperty::~OBProperty()
 154 {
 155 }
 156
 157
 158 /*
 159  * Returns an atom from the Xserver, creating it if necessary.
 160  */
 161 Atom OBProperty::create(const char *name) const
 162 {
 163   Atom a = XInternAtom(OBDisplay::display, name, False);
 164   assert(a);
 165   return a;
 166 }
 167
 168
 169 /*
 170  * Internal set.
 171  * Sets a window property on a window, optionally appending to the existing
 172  * value.
 173  */
 174 void OBProperty::set(Window win, Atom atom, Atom type,
 175                           unsigned char* data, int size, int nelements,
 176                           bool append) const
 177 {
 178   assert(win != None); assert(atom != None); assert(type != None);
 179   assert(nelements == 0 || (nelements > 0 && data != (unsigned char *) 0));
 180   assert(size == 8 || size == 16 || size == 32);
 181   XChangeProperty(OBDisplay::display, win, atom, type, size,
 182                   (append ? PropModeAppend : PropModeReplace),
 183                   data, nelements);
 184 }
 185
 186
 187 /*
 188  * Set a 32-bit property value on a window.
 189  */
 190 void OBProperty::set(Window win, Atoms atom, Atoms type,
 191                           unsigned long value) const
 192 {
 193   assert(atom >= 0 && atom < NUM_ATOMS);
 194   assert(type >= 0 && type < NUM_ATOMS);
 195   set(win, _atoms[atom], _atoms[type],
 196            reinterpret_cast<unsigned char*>(&value), 32, 1, False);
 197 }
 198
 199
 200 /*
 201  * Set an array of 32-bit properties value on a window.
 202  */
 203 void OBProperty::set(Window win, Atoms atom, Atoms type,
 204                           unsigned long value[], int elements) const
 205 {
 206   assert(atom >= 0 && atom < NUM_ATOMS);
 207   assert(type >= 0 && type < NUM_ATOMS);
 208   set(win, _atoms[atom], _atoms[type],
 209       reinterpret_cast<unsigned char*>(value), 32, elements, False);
 210 }
 211
 212
 213 /*
 214  * Set an string property value on a window.
 215  */
 216 void OBProperty::set(Window win, Atoms atom, StringType type,
 217                           const std::string &value) const
 218 {
 219   assert(atom >= 0 && atom < NUM_ATOMS);
 220   assert(type >= 0 && type < NUM_STRING_TYPE);
 221
 222   Atom t;
 223   switch (type) {
 224   case ascii: t = _atoms[Atom_String]; break;
 225   case utf8:  t = _atoms[Atom_Utf8]; break;
 226   default: assert(False); return; // unhandled StringType
 227   }
 228   set(win, _atoms[atom], t,
 229       reinterpret_cast<unsigned char *>(const_cast<char *>(value.c_str())),
 230       8, value.size() + 1, False); // add 1 to the size to include the null
 231 }
 232
 233
 234 /*
 235  * Set an array of string property values on a window.
 236  */
 237 void OBProperty::set(Window win, Atoms atom, StringType type,
 238                      const StringVect &strings) const
 239 {
 240   assert(atom >= 0 && atom < NUM_ATOMS);
 241   assert(type >= 0 && type < NUM_STRING_TYPE);
 242
 243   Atom t;
 244   switch (type) {
 245   case ascii: t = _atoms[Atom_String]; break;
 246   case utf8:  t = _atoms[Atom_Utf8]; break;
 247   default: assert(False); return; // unhandled StringType
 248   }
 249
 250   std::string value;
 251
 252   StringVect::const_iterator it = strings.begin();
 253   const StringVect::const_iterator end = strings.end();
 254   for (; it != end; ++it)
 255       value += *it + '\0';
 256
 257   set(win, _atoms[atom], t,
 258       reinterpret_cast<unsigned char *>(const_cast<char *>(value.c_str())),
 259       8, value.size(), False);
 260 }
 261
 262
 263 /*
 264  * Internal get function used by all of the typed get functions.
 265  * Gets an property's value from a window.
 266  * Returns True if the property was successfully retrieved; False if the
 267  * property did not exist on the window, or has a different type/size format
 268  * than the user tried to retrieve.
 269  */
 270 bool OBProperty::get(Window win, Atom atom, Atom type,
 271                           unsigned long *nelements, unsigned char **value,
 272                           int size) const
 273 {
 274   assert(win != None); assert(atom != None); assert(type != None);
 275   assert(size == 8 || size == 16 || size == 32);
 276   assert(*nelements > 0);
 277   unsigned char *c_val = 0;        // value alloc'd in Xlib, must be XFree()d
 278   Atom ret_type;
 279   int ret_size;
 280   unsigned long ret_bytes;
 281   int result;
 282   unsigned long maxread = *nelements;
 283   bool ret = False;
 284
 285   // try get the first element
 286   result = XGetWindowProperty(OBDisplay::display, win, atom, 0l, 1l,
 287                               False, AnyPropertyType, &ret_type, &ret_size,
 288                               nelements, &ret_bytes, &c_val);
 289   ret = (result == Success && ret_type == type && ret_size == size &&
 290          *nelements > 0);
 291   if (ret) {
 292     if (ret_bytes == 0 || maxread <= *nelements) {
 293       // we got the whole property's value
 294       *value = new unsigned char[*nelements * size/8 + 1];
 295       memcpy(*value, c_val, *nelements * size/8 + 1);
 296     } else {
 297       // get the entire property since it is larger than one long
 298       XFree(c_val);
 299       // the number of longs that need to be retreived to get the property's
 300       // entire value. The last + 1 is the first long that we retrieved above.
 301       int remain = (ret_bytes - 1)/sizeof(long) + 1 + 1;
 302       if (remain > size/8 * (signed)maxread) // dont get more than the max
 303         remain = size/8 * (signed)maxread;
 304       result = XGetWindowProperty(OBDisplay::display, win, atom, 0l,
 305                                   remain, False, type, &ret_type, &ret_size,
 306                                   nelements, &ret_bytes, &c_val);
 307       ret = (result == Success && ret_type == type && ret_size == size &&
 308              ret_bytes == 0);
 309       /*
 310         If the property has changed type/size, or has grown since our first
 311         read of it, then stop here and try again. If it shrank, then this will
 312         still work.
 313       */
 314       if (! ret)
 315         return get(win, atom, type, &maxread, value, size);
 316
 317       *value = new unsigned char[*nelements * size/8 + 1];
 318       memcpy(*value, c_val, *nelements * size/8 + 1);
 319     }
 320   }
 321   if (c_val) XFree(c_val);
 322   return ret;
 323 }
 324
 325
 326 /*
 327  * Gets a 32-bit property's value from a window.
 328  */
 329 bool OBProperty::get(Window win, Atoms atom, Atoms type,
 330                           unsigned long *nelements,
 331                           unsigned long **value) const
 332 {
 333   assert(atom >= 0 && atom < NUM_ATOMS);
 334   assert(type >= 0 && type < NUM_ATOMS);
 335   return get(win, _atoms[atom], _atoms[type], nelements,
 336                   reinterpret_cast<unsigned char **>(value), 32);
 337 }
 338
 339
 340 /*
 341  * Gets a single 32-bit property's value from a window.
 342  */
 343 bool OBProperty::get(Window win, Atoms atom, Atoms type,
 344                      unsigned long *value) const
 345 {
 346   assert(atom >= 0 && atom < NUM_ATOMS);
 347   assert(type >= 0 && type < NUM_ATOMS);
 348   unsigned long *temp;
 349   unsigned long num = 1;
 350   if (! get(win, _atoms[atom], _atoms[type], &num,
 351                  reinterpret_cast<unsigned char **>(&temp), 32))
 352     return False;
 353   *value = temp[0];
 354   delete [] temp;
 355   return True;
 356 }
 357
 358
 359 /*
 360  * Gets an string property's value from a window.
 361  */
 362 bool OBProperty::get(Window win, Atoms atom, StringType type,
 363                      std::string *value) const
 364 {
 365   unsigned long n = 1;
 366   StringVect s;
 367   if (get(win, atom, type, &n, &s)) {
 368     *value = s[0];
 369     return True;
 370   }
 371   return False;
 372 }
 373
 374
 375 bool OBProperty::get(Window win, Atoms atom, StringType type,
 376                      unsigned long *nelements, StringVect *strings) const
 377 {
 378   assert(atom >= 0 && atom < NUM_ATOMS);
 379   assert(type >= 0 && type < NUM_STRING_TYPE);
 380   assert(win != None); assert(_atoms[atom] != None);
 381   assert(*nelements > 0);
 382
 383   Atom t;
 384   switch (type) {
 385   case ascii: t = _atoms[Atom_String]; break;
 386   case utf8:  t = _atoms[Atom_Utf8]; break;
 387   default: assert(False); return False; // unhandled StringType
 388   }
 389
 390   unsigned char *value;
 391   unsigned long elements = (unsigned) -1;
 392   if (!get(win, _atoms[atom], t, &elements, &value, 8) || elements < 1)
 393     return False;
 394
 395   std::string s(reinterpret_cast<char *>(value), elements);
 396   delete [] value;
 397
 398   std::string::const_iterator it = s.begin(), end = s.end();
 399   unsigned long num = 0;
 400   while(num < *nelements) {
 401     std::string::const_iterator tmp = it; // current string.begin()
 402     it = std::find(tmp, end, '\0');       // look for null between tmp and end
 403     strings->push_back(std::string(tmp, it));   // s[tmp:it)
 404     ++num;
 405     if (it == end) break;
 406     ++it;
 407     if (it == end) break;
 408   }
 409
 410   *nelements = num;
 411
 412   return True;
 413 }
 414
 415
 416 /*
 417  * Removes a property entirely from a window.
 418  */
 419 void OBProperty::erase(Window win, Atoms atom) const
 420 {
 421   assert(atom >= 0 && atom < NUM_ATOMS);
 422   XDeleteProperty(OBDisplay::display, win, _atoms[atom]);
 423 }
 424
 425 }