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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef   __atom_hh
   3 #define   __atom_hh
   4
   5 /*! @file property.hh
   6   @brief Provides access to window properties
   7 */
   8
   9 #include "ustring.hh"
  10 #include "screeninfo.hh"
  11
  12 extern "C" {
  13 #include <X11/Xlib.h>
  14 #include <X11/Xatom.h>
  15
  16 #include <assert.h>
  17 }
  18
  19 #include <vector>
  20
  21 namespace otk {
  22
  23 //! Provides easy access to window properties.
  24 class Property {
  25 public:
  26   //! The atoms on the X server which this class will cache
  27   enum Atoms {
  28     // types
  29     Atom_Cardinal, //!< The atom which represents the Cardinal data type
  30     Atom_Window,   //!< The atom which represents window ids
  31     Atom_Pixmap,   //!< The atom which represents pixmap ids
  32     Atom_Atom,     //!< The atom which represents atom values
  33     Atom_String,   //!< The atom which represents ascii strings
  34     Atom_Utf8,     //!< The atom which represents utf8-encoded strings
  35
  36     openbox_pid,
  37
  38     // window hints
  39     wm_colormap_windows,
  40     wm_protocols,
  41     wm_state,
  42     wm_delete_window,
  43     wm_take_focus,
  44     wm_change_state,
  45     wm_name,
  46     wm_icon_name,
  47     wm_class,
  48     wm_window_role,
  49     motif_wm_hints,
  50     blackbox_attributes,
  51     blackbox_change_attributes,
  52     blackbox_hints,
  53
  54     // blackbox-protocol atoms (wm -> client)
  55     blackbox_structure_messages,
  56     blackbox_notify_startup,
  57     blackbox_notify_window_add,
  58     blackbox_notify_window_del,
  59     blackbox_notify_window_focus,
  60     blackbox_notify_current_workspace,
  61     blackbox_notify_workspace_count,
  62     blackbox_notify_window_raise,
  63     blackbox_notify_window_lower,
  64     // blackbox-protocol atoms (client -> wm)
  65     blackbox_change_workspace,
  66     blackbox_change_window_focus,
  67     blackbox_cycle_window_focus,
  68
  69     openbox_show_root_menu,
  70     openbox_show_workspace_menu,
  71
  72     // NETWM atoms
  73     // root window properties
  74     net_supported,
  75     net_client_list,
  76     net_client_list_stacking,
  77     net_number_of_desktops,
  78     net_desktop_geometry,
  79     net_desktop_viewport,
  80     net_current_desktop,
  81     net_desktop_names,
  82     net_active_window,
  83     net_workarea,
  84     net_supporting_wm_check,
  85 //    net_virtual_roots,
  86     // root window messages
  87     net_close_window,
  88     net_wm_moveresize,
  89     // application window properties
  90 //    net_properties,
  91     net_wm_name,
  92     net_wm_visible_name,
  93     net_wm_icon_name,
  94     net_wm_visible_icon_name,
  95     net_wm_desktop,
  96     net_wm_window_type,
  97     net_wm_state,
  98     net_wm_strut,
  99 //  net_wm_icon_geometry,
 100 //  net_wm_icon,
 101 //  net_wm_pid,
 102 //  net_wm_handled_icons,
 103     net_wm_allowed_actions,
 104     // application protocols
 105 //    net_wm_ping,
 106
 107     net_wm_window_type_desktop,
 108     net_wm_window_type_dock,
 109     net_wm_window_type_toolbar,
 110     net_wm_window_type_menu,
 111     net_wm_window_type_utility,
 112     net_wm_window_type_splash,
 113     net_wm_window_type_dialog,
 114     net_wm_window_type_normal,
 115
 116     net_wm_moveresize_size_topleft,
 117     net_wm_moveresize_size_topright,
 118     net_wm_moveresize_size_bottomleft,
 119     net_wm_moveresize_size_bottomright,
 120     net_wm_moveresize_move,
 121
 122     net_wm_action_move,
 123     net_wm_action_resize,
 124     net_wm_action_shade,
 125     net_wm_action_maximize_horz,
 126     net_wm_action_maximize_vert,
 127     net_wm_action_change_desktop,
 128     net_wm_action_close,
 129
 130     net_wm_state_modal,
 131     net_wm_state_sticky,
 132     net_wm_state_maximized_vert,
 133     net_wm_state_maximized_horz,
 134     net_wm_state_shaded,
 135     net_wm_state_skip_taskbar,
 136     net_wm_state_skip_pager,
 137     net_wm_state_hidden,
 138     net_wm_state_fullscreen,
 139     net_wm_state_above,
 140     net_wm_state_below,
 141
 142     kde_net_system_tray_windows,
 143     kde_net_wm_system_tray_window_for,
 144     kde_net_wm_window_type_override,
 145
 146 #ifndef DOXYGEN_IGNORE
 147     // constant for how many atoms exist in the enumerator
 148     NUM_ATOMS
 149 #endif
 150   };
 151
 152   //! The possible types/encodings of strings
 153   enum StringType {
 154     ascii, //!< Standard 8-bit ascii string
 155     utf8,  //!< Utf8-encoded string
 156 #ifndef DOXYGEN_IGNORE
 157     NUM_STRING_TYPE
 158 #endif
 159   };
 160
 161 private:
 162   //! The value of all atoms on the X server that exist in the
 163   //! Property::Atoms enum
 164   Atom _atoms[NUM_ATOMS];
 165
 166   //! Gets the value of an Atom from the X server, creating it if nessesary
 167   Atom create(const char *name) const;
 168
 169   //! Sets a property on a window
 170   void set(Window win, Atom atom, Atom type, unsigned char *data,
 171            int size, int nelements, bool append) const;
 172   //! Gets a property's value from a window
 173   bool get(Window win, Atom atom, Atom type,
 174            unsigned long *nelements, unsigned char **value,
 175            int size) const;
 176
 177 public:
 178   //! A list of strings
 179   typedef std::vector<ustring> StringVect;
 180
 181   //! Constructs a new Atom object
 182   /*!
 183     CAUTION: This constructor uses Display::display, so ensure that it is
 184     initialized before initializing this class!
 185   */
 186   Property();
 187   //! Destroys the Atom object
 188   virtual ~Property();
 189
 190   //! Sets a single-value property on a window to a new value
 191   /*!
 192     @param win The window id of the window on which to set the property's value
 193     @param atom A member of the Property::Atoms enum that specifies which
 194                 property to set
 195     @param type A member of the Property::Atoms enum that specifies the type
 196                 of the property to set
 197     @param value The value to set the property to
 198   */
 199   void set(Window win, Atoms atom, Atoms type, unsigned long value) const;
 200   //! Sets an multiple-value property on a window to a new value
 201   /*!
 202     @param win The window id of the window on which to set the property's value
 203     @param atom A member of the Property::Atoms enum that specifies which
 204                 property to set
 205     @param type A member of the Property::Atoms enum that specifies the type
 206                 of the property to set
 207     @param value Any array of values to set the property to. The array must
 208                  contain <i>elements</i> number of elements
 209     @param elements The number of elements in the <i>value</i> array
 210   */
 211   void set(Window win, Atoms atom, Atoms type,
 212            unsigned long value[], int elements) const;
 213   //! Sets a string property on a window to a new value
 214   /*!
 215     @param win The window id of the window on which to set the property's value
 216     @param atom A member of the Property::Atoms enum that specifies which
 217                 property to set
 218     @param type A member of the Property::StringType enum that specifies the
 219                 type of the string the property is being set to
 220     @param value The string to set the property to
 221   */
 222   void set(Window win, Atoms atom, StringType type,
 223            const ustring &value) const;
 224   //! Sets a string-array property on a window to a new value
 225   /*!
 226     @param win The window id of the window on which to set the property's value
 227     @param atom A member of the Property::Atoms enum that specifies which
 228                 property to set
 229     @param type A member of the Property::StringType enum that specifies the
 230                 type of the string the property is being set to
 231     @param strings A list of strings to set the property to
 232   */
 233   void set(Window win, Atoms atom, StringType type,
 234            const StringVect &strings) const;
 235
 236   //! Gets the value of a property on a window
 237   /*!
 238     @param win The window id of the window to get the property value from
 239     @param atom A member of the Property::Atoms enum that specifies which
 240                 property to retrieve
 241     @param type A member of the Property::Atoms enum that specifies the type
 242                 of the property to retrieve
 243     @param nelements The maximum number of elements to retrieve from the
 244                      property (assuming it has more than 1 value in it). To
 245                      retrieve all possible elements, use "(unsigned) -1".<br>
 246                      When the function returns, if it returns true, this will
 247                      contain the actual number of elements retrieved.<br>
 248     @param value If the function returns true, then this contains an array of
 249                  retrieved values for the property.<br>
 250                  The <i>value</i> is allocated inside the function and
 251                  <b>delete[]</b> value needs to be called when you are done
 252                  with it.<br>
 253                  The <i>value</i> array returned is null terminated, and has
 254                  <i>nelements</i> elements in it plus the terminating null.
 255     @return true if retrieval of the specified property with the specified
 256             type was successful; otherwise, false
 257   */
 258   bool get(Window win, Atoms atom, Atoms type,
 259            unsigned long *nelements, unsigned long **value) const;
 260   //! Gets a single element from the value of a property on a window
 261   /*!
 262     @param win The window id of the window to get the property value from
 263     @param atom A member of the Property::Atoms enum that specifies which
 264                 property to retrieve
 265     @param type A member of the Property::Atoms enum that specifies the type
 266                 of the property to retrieve
 267     @param value If the function returns true, then this contains the first
 268                  (and possibly only) element in the value of the specified
 269                  property.
 270     @return true if retrieval of the specified property with the specified
 271             type was successful; otherwise, false
 272   */
 273   bool get(Window win, Atoms atom, Atoms type, unsigned long *value) const;
 274   //! Gets a single string from the value of a property on a window
 275   /*!
 276     @param win The window id of the window to get the property value from
 277     @param atom A member of the Property::Atoms enum that specifies which
 278                 property to retrieve
 279     @param type A member of the Property::StringType enum that specifies the
 280                 type of the string property to retrieve
 281     @param value If the function returns true, then this contains the first
 282                  (and possibly only) string in the value of the specified
 283                  property.
 284     @return true if retrieval of the specified property with the specified
 285             type was successful; otherwise, false
 286   */
 287   bool get(Window win, Atoms atom, StringType type, ustring *value) const;
 288   //! Gets strings from the value of a property on a window
 289   /*!
 290     @param win The window id of the window to get the property value from
 291     @param atom A member of the Property::Atoms enum that specifies which
 292                 property to retrieve
 293     @param type A member of the Property::StringType enum that specifies the
 294                 type of the string property to retrieve
 295     @param nelements The maximum number of strings to retrieve from the
 296                      property (assuming it has more than 1 string in it). To
 297                      retrieve all possible strings, use "(unsigned) -1".<br>
 298                      When the function returns, if it returns true, this will
 299                      contain the actual number of strings retrieved.<br>
 300     @param strings If the function returns true, then this contains all of the
 301                    strings retrieved from the property's value.
 302     @return true if retrieval of the specified property with the specified
 303             type was successful; otherwise, false
 304   */
 305   bool get(Window win, Atoms atom, StringType type,
 306            unsigned long *nelements, StringVect *strings) const;
 307
 308   //! Removes a property from a window
 309   /*!
 310     @param win The window id of the window to remove the property from
 311     @param atom A member of the Property::Atoms enum that specifies which
 312                 property to remove from the window
 313   */
 314   void erase(Window win, Atoms atom) const;
 315
 316   //! Gets the value of an atom on the X server
 317   /*!
 318     @param a A member of the Property::Atoms enum that specifies which Atom's
 319              value to return
 320     @return The value of the specified Atom
 321   */
 322   inline Atom atom(Atoms a) const {
 323     assert(a >= 0 && a < NUM_ATOMS); Atom ret = _atoms[a]; assert(ret != 0);
 324     return ret;
 325   }
 326 };
 327
 328 }
 329
 330 #endif // __atom_hh