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