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

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