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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 #include "property.hh"
   6 #include "display.hh"
   7
   8 extern "C" {
   9 #include <X11/Xatom.h>
  10 }
  11
  12 #include <algorithm>
  13 #include <cassert>
  14
  15 namespace otk {
  16
  17 Atoms Property::atoms;
  18
  19 static Atom create(char *name) { return XInternAtom(**display, name, false); }
  20
  21 void Property::initialize()
  22 {
  23   assert(display);
  24
  25   // make sure asserts fire if there is a problem
  26   memset(&atoms, 0, sizeof(Atoms));
  27
  28   atoms.cardinal = XA_CARDINAL;
  29   atoms.window = XA_WINDOW;
  30   atoms.pixmap = XA_PIXMAP;
  31   atoms.atom = XA_ATOM;
  32   atoms.string = XA_STRING;
  33   atoms.utf8 = create("UTF8_STRING");
  34
  35   atoms.openbox_pid = create("_OPENBOX_PID");
  36
  37   atoms.wm_colormap_windows = create("WM_COLORMAP_WINDOWS");
  38   atoms.wm_protocols = create("WM_PROTOCOLS");
  39   atoms.wm_state = create("WM_STATE");
  40   atoms.wm_change_state = create("WM_CHANGE_STATE");
  41   atoms.wm_delete_window = create("WM_DELETE_WINDOW");
  42   atoms.wm_take_focus = create("WM_TAKE_FOCUS");
  43   atoms.wm_name = create("WM_NAME");
  44   atoms.wm_icon_name = create("WM_ICON_NAME");
  45   atoms.wm_class = create("WM_CLASS");
  46   atoms.wm_window_role = create("WM_WINDOW_ROLE");
  47   atoms.motif_wm_hints = create("_MOTIF_WM_HINTS");
  48
  49   atoms.openbox_show_root_menu = create("_OPENBOX_SHOW_ROOT_MENU");
  50   atoms.openbox_show_workspace_menu = create("_OPENBOX_SHOW_WORKSPACE_MENU");
  51
  52   atoms.net_supported = create("_NET_SUPPORTED");
  53   atoms.net_client_list = create("_NET_CLIENT_LIST");
  54   atoms.net_client_list_stacking = create("_NET_CLIENT_LIST_STACKING");
  55   atoms.net_number_of_desktops = create("_NET_NUMBER_OF_DESKTOPS");
  56   atoms.net_desktop_geometry = create("_NET_DESKTOP_GEOMETRY");
  57   atoms.net_desktop_viewport = create("_NET_DESKTOP_VIEWPORT");
  58   atoms.net_current_desktop = create("_NET_CURRENT_DESKTOP");
  59   atoms.net_desktop_names = create("_NET_DESKTOP_NAMES");
  60   atoms.net_active_window = create("_NET_ACTIVE_WINDOW");
  61   atoms.net_workarea = create("_NET_WORKAREA");
  62   atoms.net_supporting_wm_check = create("_NET_SUPPORTING_WM_CHECK");
  63 //  atoms.net_virtual_roots = create("_NET_VIRTUAL_ROOTS");
  64   atoms.net_desktop_layout = create("_NET_DESKTOP_LAYOUT");
  65   atoms.net_showing_desktop = create("_NET_SHOWING_DESKTOP");
  66
  67   atoms.net_close_window = create("_NET_CLOSE_WINDOW");
  68   atoms.net_wm_moveresize = create("_NET_WM_MOVERESIZE");
  69
  70 //  atoms.net_properties = create("_NET_PROPERTIES");
  71   atoms.net_wm_name = create("_NET_WM_NAME");
  72   atoms.net_wm_visible_name = create("_NET_WM_VISIBLE_NAME");
  73   atoms.net_wm_icon_name = create("_NET_WM_ICON_NAME");
  74   atoms.net_wm_visible_icon_name = create("_NET_WM_VISIBLE_ICON_NAME");
  75   atoms.net_wm_desktop = create("_NET_WM_DESKTOP");
  76   atoms.net_wm_window_type = create("_NET_WM_WINDOW_TYPE");
  77   atoms.net_wm_state = create("_NET_WM_STATE");
  78   atoms.net_wm_strut = create("_NET_WM_STRUT");
  79 //  atoms.net_wm_icon_geometry = create("_NET_WM_ICON_GEOMETRY");
  80   atoms.net_wm_icon = create("_NET_WM_ICON");
  81 //  atoms.net_wm_pid = create("_NET_WM_PID");
  82 //  atoms.net_wm_handled_icons = create("_NET_WM_HANDLED_ICONS");
  83   atoms.net_wm_allowed_actions = create("_NET_WM_ALLOWED_ACTIONS");
  84
  85 //  atoms.net_wm_ping = create("_NET_WM_PING");
  86
  87   atoms.net_wm_window_type_desktop = create("_NET_WM_WINDOW_TYPE_DESKTOP");
  88   atoms.net_wm_window_type_dock = create("_NET_WM_WINDOW_TYPE_DOCK");
  89   atoms.net_wm_window_type_toolbar = create("_NET_WM_WINDOW_TYPE_TOOLBAR");
  90   atoms.net_wm_window_type_menu = create("_NET_WM_WINDOW_TYPE_MENU");
  91   atoms.net_wm_window_type_utility = create("_NET_WM_WINDOW_TYPE_UTILITY");
  92   atoms.net_wm_window_type_splash = create("_NET_WM_WINDOW_TYPE_SPLASH");
  93   atoms.net_wm_window_type_dialog = create("_NET_WM_WINDOW_TYPE_DIALOG");
  94   atoms.net_wm_window_type_normal = create("_NET_WM_WINDOW_TYPE_NORMAL");
  95
  96   atoms.net_wm_moveresize_size_topleft =
  97     create("_NET_WM_MOVERESIZE_SIZE_TOPLEFT");
  98   atoms.net_wm_moveresize_size_topright =
  99     create("_NET_WM_MOVERESIZE_SIZE_TOPRIGHT");
 100   atoms.net_wm_moveresize_size_bottomleft =
 101     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT");
 102   atoms.net_wm_moveresize_size_bottomright =
 103     create("_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT");
 104   atoms.net_wm_moveresize_move =
 105     create("_NET_WM_MOVERESIZE_MOVE");
 106
 107   atoms.net_wm_action_move = create("_NET_WM_ACTION_MOVE");
 108   atoms.net_wm_action_resize = create("_NET_WM_ACTION_RESIZE");
 109   atoms.net_wm_action_minimize = create("_NET_WM_ACTION_MINIMIZE");
 110   atoms.net_wm_action_shade = create("_NET_WM_ACTION_SHADE");
 111   atoms.net_wm_action_stick = create("_NET_WM_ACTION_STICK");
 112   atoms.net_wm_action_maximize_horz = create("_NET_WM_ACTION_MAXIMIZE_HORZ");
 113   atoms.net_wm_action_maximize_vert = create("_NET_WM_ACTION_MAXIMIZE_VERT");
 114   atoms.net_wm_action_fullscreen = create("_NET_WM_ACTION_FULLSCREEN");
 115   atoms.net_wm_action_change_desktop =
 116     create("_NET_WM_ACTION_CHANGE_DESKTOP");
 117   atoms.net_wm_action_close = create("_NET_WM_ACTION_CLOSE");
 118
 119   atoms.net_wm_state_modal = create("_NET_WM_STATE_MODAL");
 120   atoms.net_wm_state_sticky = create("_NET_WM_STATE_STICKY");
 121   atoms.net_wm_state_maximized_vert = create("_NET_WM_STATE_MAXIMIZED_VERT");
 122   atoms.net_wm_state_maximized_horz = create("_NET_WM_STATE_MAXIMIZED_HORZ");
 123   atoms.net_wm_state_shaded = create("_NET_WM_STATE_SHADED");
 124   atoms.net_wm_state_skip_taskbar = create("_NET_WM_STATE_SKIP_TASKBAR");
 125   atoms.net_wm_state_skip_pager = create("_NET_WM_STATE_SKIP_PAGER");
 126   atoms.net_wm_state_hidden = create("_NET_WM_STATE_HIDDEN");
 127   atoms.net_wm_state_fullscreen = create("_NET_WM_STATE_FULLSCREEN");
 128   atoms.net_wm_state_above = create("_NET_WM_STATE_ABOVE");
 129   atoms.net_wm_state_below = create("_NET_WM_STATE_BELOW");
 130
 131   atoms.kde_net_system_tray_windows = create("_KDE_NET_SYSTEM_TRAY_WINDOWS");
 132   atoms.kde_net_wm_system_tray_window_for =
 133     create("_KDE_NET_WM_SYSTEM_TRAY_WINDOW_FOR");
 134   atoms.kde_net_wm_window_type_override =
 135     create("_KDE_NET_WM_WINDOW_TYPE_OVERRIDE");
 136
 137   atoms.rootpmapid = create("_XROOTPMAP_ID");
 138   atoms.esetrootid = create("ESETROOT_PMAP_ID");
 139
 140   atoms.openbox_premax = create("_OPENBOX_PREMAX");
 141   atoms.openbox_active_window = create("_OPENBOX_ACTIVE_WINDOW");
 142 }
 143
 144 void Property::set(Window win, Atom atom, Atom type, unsigned char* data,
 145                    int size, int nelements, bool append)
 146 {
 147   assert(win != None); assert(atom != None); assert(type != None);
 148   assert(nelements == 0 || (nelements > 0 && data != (unsigned char *) 0));
 149   assert(size == 8 || size == 16 || size == 32);
 150   XChangeProperty(**display, win, atom, type, size,
 151                   (append ? PropModeAppend : PropModeReplace),
 152                   data, nelements);
 153 }
 154
 155 void Property::set(Window win, Atom atom, Atom type, unsigned long value)
 156 {
 157   set(win, atom, type, (unsigned char*) &value, 32, 1, false);
 158 }
 159
 160 void Property::set(Window win, Atom atom, Atom type, unsigned long value[],
 161                    int elements)
 162 {
 163   set(win, atom, type, (unsigned char*) value, 32, elements, false);
 164 }
 165
 166 void Property::set(Window win, Atom atom, StringType type,
 167                    const ustring &value)
 168 {
 169   Atom t;
 170   switch (type) {
 171   case ascii: t = atoms.string; assert(!value.utf8()); break;
 172   case utf8:  t = atoms.utf8;   assert(value.utf8());  break;
 173   default: assert(false); return; // unhandled StringType
 174   }
 175
 176   // add 1 to the size to include the trailing null
 177   set(win, atom, t, (unsigned char*) value.c_str(), 8, value.bytes() + 1,
 178       false);
 179 }
 180
 181 void Property::set(Window win, Atom atom, StringType type,
 182                      const StringVect &strings)
 183 {
 184   Atom t;
 185   bool u; // utf8 encoded?
 186   switch (type) {
 187   case ascii: t = atoms.string; u = false; break;
 188   case utf8:  t = atoms.utf8;   u = true;  break;
 189   default: assert(false); return; // unhandled StringType
 190   }
 191
 192   ustring value(u);
 193
 194   StringVect::const_iterator it = strings.begin();
 195   const StringVect::const_iterator end = strings.end();
 196   for (; it != end; ++it) {
 197     assert(it->utf8() == u); // the ustring is encoded correctly?
 198     value += *it;
 199     value += '\0';
 200   }
 201
 202   // add 1 to the size to include the trailing null
 203   set(win, atom, t, (unsigned char*)value.c_str(), 8,
 204       value.bytes() + 1, false);
 205 }
 206
 207 bool Property::get(Window win, Atom atom, Atom type, unsigned long *nelements,
 208                    unsigned char **value, int size)
 209 {
 210   assert(win != None); assert(atom != None); assert(type != None);
 211   assert(size == 8 || size == 16 || size == 32);
 212   assert(*nelements > 0);
 213   unsigned char *c_val = 0;        // value alloc'd in Xlib, must be XFree()d
 214   Atom ret_type;
 215   int ret_size;
 216   unsigned long ret_bytes;
 217   int result;
 218   unsigned long maxread = *nelements;
 219   bool ret = false;
 220
 221   // try get the first element
 222   result = XGetWindowProperty(**display, win, atom, 0l, 1l,
 223                               false, AnyPropertyType, &ret_type, &ret_size,
 224                               nelements, &ret_bytes, &c_val);
 225   ret = (result == Success && ret_type == type && ret_size == size &&
 226          *nelements > 0);
 227   if (ret) {
 228     if (ret_bytes == 0 || maxread <= *nelements) {
 229       // we got the whole property's value
 230       *value = new unsigned char[*nelements * size/8 + 1];
 231       memcpy(*value, c_val, *nelements * size/8 + 1);
 232     } else {
 233       // get the entire property since it is larger than one long
 234       XFree(c_val);
 235       // the number of longs that need to be retreived to get the property's
 236       // entire value. The last + 1 is the first long that we retrieved above.
 237       int remain = (ret_bytes - 1)/sizeof(long) + 1 + 1;
 238       if (remain > size/8 * (signed)maxread) // dont get more than the max
 239         remain = size/8 * (signed)maxread;
 240       result = XGetWindowProperty(**display, win, atom, 0l,
 241                                   remain, false, type, &ret_type, &ret_size,
 242                                   nelements, &ret_bytes, &c_val);
 243       ret = (result == Success && ret_type == type && ret_size == size &&
 244              ret_bytes == 0);
 245       /*
 246         If the property has changed type/size, or has grown since our first
 247         read of it, then stop here and try again. If it shrank, then this will
 248         still work.
 249       */
 250       if (! ret)
 251         return get(win, atom, type, &maxread, value, size);
 252
 253       *value = new unsigned char[*nelements * size/8 + 1];
 254       memcpy(*value, c_val, *nelements * size/8 + 1);
 255     }
 256   }
 257   if (c_val) XFree(c_val);
 258   return ret;
 259 }
 260
 261 bool Property::get(Window win, Atom atom, Atom type, unsigned long *nelements,
 262                    unsigned long **value)
 263 {
 264   return get(win, atom, type, nelements, (unsigned char**) value, 32);
 265 }
 266
 267 bool Property::get(Window win, Atom atom, Atom type, unsigned long *value)
 268 {
 269   unsigned long *temp;
 270   unsigned long num = 1;
 271   if (! get(win, atom, type, &num, (unsigned char **) &temp, 32))
 272     return false;
 273   *value = temp[0];
 274   delete [] temp;
 275   return true;
 276 }
 277
 278 bool Property::get(Window win, Atom atom, StringType type, ustring *value)
 279 {
 280   unsigned long n = 1;
 281   StringVect s;
 282
 283   if (get(win, atom, type, &n, &s)) {
 284     *value = s[0];
 285     return true;
 286   }
 287   return false;
 288 }
 289
 290 bool Property::get(Window win, Atom atom, StringType type,
 291                    unsigned long *nelements, StringVect *strings)
 292 {
 293   assert(*nelements > 0);
 294
 295   Atom t;
 296   bool u; // utf8 encoded?
 297   switch (type) {
 298   case ascii: t = atoms.string; u = false; break;
 299   case utf8:  t = atoms.utf8;   u = true;  break;
 300   default: assert(false); return false; // unhandled StringType
 301   }
 302
 303   unsigned char *value;
 304   unsigned long elements = (unsigned) -1;
 305   if (!get(win, atom, t, &elements, &value, 8) || elements < 1)
 306     return false;
 307
 308   std::string s((char*)value, elements);
 309   delete [] value;
 310
 311   std::string::const_iterator it = s.begin(), end = s.end();
 312   unsigned long num = 0;
 313   while(num < *nelements) {
 314     std::string::const_iterator tmp = it; // current string.begin()
 315     it = std::find(tmp, end, '\0');       // look for null between tmp and end
 316     strings->push_back(std::string(tmp, it));   // s[tmp:it)
 317     strings->back().setUtf8(u);
 318     ++num;
 319     if (it == end) break;
 320     ++it;
 321     if (it == end) break;
 322   }
 323
 324   *nelements = num;
 325
 326   return true;
 327 }
 328
 329
 330 /*
 331  * Removes a property entirely from a window.
 332  */
 333 void Property::erase(Window win, Atom atom)
 334 {
 335   XDeleteProperty(**display, win, atom);
 336 }
 337
 338 }