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