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 extern "C" {
  10 #include <X11/Xlib.h>
  11 #include <X11/Xatom.h>
  12
  13 #include <assert.h>
  14 }
  15
  16 #include <vector>
  17
  18 #include "userstring.hh"
  19 #include "screeninfo.hh"
  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   //! Constructs a new Atom object
 179   /*!
 180     CAUTION: This constructor uses Display::display, so ensure that it is
 181     initialized before initializing this class!
 182   */
 183   Property();
 184   //! Destroys the Atom object
 185   virtual ~Property();
 186
 187   //! Sets a single-value property on a window to a new value
 188   /*!
 189     @param win The window id of the window on which to set the property's value
 190     @param atom A member of the Property::Atoms enum that specifies which
 191                 property to set
 192     @param type A member of the Property::Atoms enum that specifies the type
 193                 of the property to set
 194     @param value The value to set the property to
 195   */
 196   void set(Window win, Atoms atom, Atoms type, unsigned long value) const;
 197   //! Sets an multiple-value 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 A member of the Property::Atoms enum that specifies which
 201                 property to set
 202     @param type A member of the Property::Atoms enum that specifies the type
 203                 of the property to set
 204     @param value Any array of values to set the property to. The array must
 205                  contain <i>elements</i> number of elements
 206     @param elements The number of elements in the <i>value</i> array
 207   */
 208   void set(Window win, Atoms atom, Atoms type,
 209            unsigned long value[], int elements) const;
 210   //! Sets a string property on a window to a new value
 211   /*!
 212     @param win The window id of the window on which to set the property's value
 213     @param atom A member of the Property::Atoms enum that specifies which
 214                 property to set
 215     @param type A member of the Property::StringType enum that specifies the
 216                 type of the string the property is being set to
 217     @param value The string to set the property to
 218   */
 219   void set(Window win, Atoms atom, StringType type,
 220            const userstring &value) const;
 221   //! Sets a string-array property on a window to a new value
 222   /*!
 223     @param win The window id of the window on which to set the property's value
 224     @param atom A member of the Property::Atoms enum that specifies which
 225                 property to set
 226     @param type A member of the Property::StringType enum that specifies the
 227                 type of the string the property is being set to
 228     @param strings A list of strings to set the property to
 229   */
 230   void set(Window win, Atoms atom, StringType type,
 231            const userstring::vector &strings) const;
 232
 233   //! Gets 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 A member of the Property::Atoms enum that specifies which
 237                 property to retrieve
 238     @param type A member of the Property::Atoms enum that specifies the type
 239                 of the property to retrieve
 240     @param nelements The maximum number of elements to retrieve from the
 241                      property (assuming it has more than 1 value in it). To
 242                      retrieve all possible elements, use "(unsigned) -1".<br>
 243                      When the function returns, if it returns true, this will
 244                      contain the actual number of elements retrieved.<br>
 245     @param value If the function returns true, then this contains an array of
 246                  retrieved values for the property.<br>
 247                  The <i>value</i> is allocated inside the function and
 248                  <b>delete[]</b> value needs to be called when you are done
 249                  with it.<br>
 250                  The <i>value</i> array returned is null terminated, and has
 251                  <i>nelements</i> elements in it plus the terminating null.
 252     @return true if retrieval of the specified property with the specified
 253             type was successful; otherwise, false
 254   */
 255   bool get(Window win, Atoms atom, Atoms type,
 256            unsigned long *nelements, unsigned long **value) const;
 257   //! Gets a single element from the value of a property on a window
 258   /*!
 259     @param win The window id of the window to get the property value from
 260     @param atom A member of the Property::Atoms enum that specifies which
 261                 property to retrieve
 262     @param type A member of the Property::Atoms enum that specifies the type
 263                 of the property to retrieve
 264     @param value If the function returns true, then this contains the first
 265                  (and possibly only) element in the value of the specified
 266                  property.
 267     @return true if retrieval of the specified property with the specified
 268             type was successful; otherwise, false
 269   */
 270   bool get(Window win, Atoms atom, Atoms type, unsigned long *value) const;
 271   //! Gets a single string from the value of a property on a window
 272   /*!
 273     @param win The window id of the window to get the property value from
 274     @param atom A member of the Property::Atoms enum that specifies which
 275                 property to retrieve
 276     @param type A member of the Property::StringType enum that specifies the
 277                 type of the string property to retrieve
 278     @param value If the function returns true, then this contains the first
 279                  (and possibly only) string in the value of the specified
 280                  property.
 281     @return true if retrieval of the specified property with the specified
 282             type was successful; otherwise, false
 283   */
 284   bool get(Window win, Atoms atom, StringType type, userstring *value) const;
 285   //! Gets strings from the value of a property on a window
 286   /*!
 287     @param win The window id of the window to get the property value from
 288     @param atom A member of the Property::Atoms enum that specifies which
 289                 property to retrieve
 290     @param type A member of the Property::StringType enum that specifies the
 291                 type of the string property to retrieve
 292     @param nelements The maximum number of strings to retrieve from the
 293                      property (assuming it has more than 1 string in it). To
 294                      retrieve all possible strings, use "(unsigned) -1".<br>
 295                      When the function returns, if it returns true, this will
 296                      contain the actual number of strings retrieved.<br>
 297     @param strings If the function returns true, then this contains all of the
 298                    strings retrieved from the property's value.
 299     @return true if retrieval of the specified property with the specified
 300             type was successful; otherwise, false
 301   */
 302   bool get(Window win, Atoms atom, StringType type,
 303            unsigned long *nelements, userstring::vector *strings) const;
 304
 305   //! Removes a property from a window
 306   /*!
 307     @param win The window id of the window to remove the property from
 308     @param atom A member of the Property::Atoms enum that specifies which
 309                 property to remove from the window
 310   */
 311   void erase(Window win, Atoms atom) const;
 312
 313   //! Gets the value of an atom on the X server
 314   /*!
 315     @param a A member of the Property::Atoms enum that specifies which Atom's
 316              value to return
 317     @return The value of the specified Atom
 318   */
 319   inline Atom atom(Atoms a) const {
 320     assert(a >= 0 && a < NUM_ATOMS); Atom ret = _atoms[a]; assert(ret != 0);
 321     return ret;
 322   }
 323 };
 324
 325 }
 326
 327 #endif // __atom_hh