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