Dogcows Code - chaz/openbox/blob - src/openbox.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef   __openbox_hh
   3 #define   __openbox_hh
   4
   5 /*! @file openbox.hh
   6   @brief The main class for the Openbox window manager
   7 */
   8
   9 extern "C" {
  10 #include <X11/Xlib.h>
  11 }
  12
  13 #include <string>
  14 #include <vector>
  15 #include <map>
  16
  17 #include "otk/display.hh"
  18 #include "otk/screeninfo.hh"
  19 #include "otk/eventdispatcher.hh"
  20 #include "otk/eventhandler.hh"
  21
  22 namespace ob {
  23
  24 class Screen;
  25 class Client;
  26 class Actions;
  27 class Bindings;
  28
  29 //! Mouse cursors used throughout Openbox
  30 struct Cursors {
  31   Cursor session;  //!< The default mouse cursor
  32   Cursor move;     //!< For moving a window
  33   Cursor ll_angle; //!< For resizing the bottom left corner of a window
  34   Cursor lr_angle; //!< For resizing the bottom right corner of a window
  35   Cursor ul_angle; //!< For resizing the top left corner of a window
  36   Cursor ur_angle; //!< For resizing the right corner of a window
  37 };
  38
  39 class Openbox;
  40
  41 //! The single instance of the Openbox class for the application
  42 /*!
  43   Since this variable is globally available in the application, the Openbox
  44   class does not need to be passed around to any of the other classes.
  45 */
  46 extern Openbox *openbox;
  47
  48 //! The main class for the Openbox window manager
  49 /*!
  50   Only a single instance of the Openbox class may be used in the application. A
  51   pointer to this instance is held in the Openbox::instance static member
  52   variable.
  53   Instantiation of this class begins the window manager. After instantiation,
  54   the Openbox::eventLoop function should be called. The eventLoop method does
  55   not exit until the window manager is ready to be destroyed. Destruction of
  56   the Openbox class instance will shutdown the window manager.
  57 */
  58 class Openbox : public otk::EventDispatcher, public otk::EventHandler
  59 {
  60 public:
  61   //! The posible running states of the window manager
  62   enum RunState {
  63     State_Starting, //!< The window manager is starting up (being created)
  64     State_Normal,   //!< The window manager is running in its normal state
  65     State_Exiting   //!< The window manager is exiting (being destroyed)
  66   };
  67
  68   //! A map for looking up a specific client class from the window id
  69   typedef std::map<Window, Client *> ClientMap;
  70
  71   //! A list of Screen classes
  72   typedef std::vector<Screen *> ScreenList;
  73
  74 private:
  75   // stuff that can be passed on the command line
  76   //! Path to the config file to use/in use
  77   /*!
  78     Defaults to $(HOME)/.openbox/rc3
  79   */
  80   std::string _rcfilepath;
  81   //! Path to the menu file to use/in use
  82   /*!
  83     Defaults to $(HOME)/.openbox/menu3
  84   */
  85   std::string _menufilepath;
  86   //! Path to the script file to execute on startup
  87   /*!
  88     Defaults to $(HOME)/.openbox/user.py
  89   */
  90   std::string _scriptfilepath;
  91   //! The value of argv, i.e. how this application was executed
  92   char **_argv;
  93   //! Run the application in synchronous mode? (for debugging)
  94   bool _sync;
  95   //! Should Openbox run on a single screen or on all available screens?
  96   bool _single;
  97
  98   //! A list of all managed clients
  99   ClientMap _clients;
 100
 101   //! A list of all the managed screens
 102   ScreenList _screens;
 103
 104   //! The action interface through which all user-available actions occur
 105   Actions *_actions;
 106
 107   //! The interface through which keys/buttons are grabbed and handled
 108   Bindings *_bindings;
 109
 110   //! The running state of the window manager
 111   RunState _state;
 112
 113   //! Mouse cursors used throughout Openbox
 114   Cursors _cursors;
 115
 116   //! When set to true, the Openbox::eventLoop function will stop and return
 117   bool _shutdown;
 118
 119   //! When set to true, and Openbox is about to exit, it will spawn a new
 120   //! process
 121   bool _restart;
 122
 123   //! If this contains anything, a restart will try to execute the program in
 124   //! this variable, and will fallback to reexec'ing itself if that fails
 125   std::string _restart_prog;
 126
 127   //! The client with input focus
 128   /*!
 129     Updated by the clients themselves.
 130   */
 131   Client *_focused_client;
 132
 133   //! The screen with input focus
 134   /*!
 135     Updated by the clients when they update the Openbox::focused_client
 136     property.
 137   */
 138   Screen *_focused_screen;
 139
 140   //! Parses the command line used when executing this application
 141   void parseCommandLine(int argv, char **argv);
 142   //! Displays the version string to stdout
 143   void showVersion();
 144   //! Displays usage information and help to stdout
 145   void showHelp();
 146
 147   //! Handles signal events for the application
 148   static void signalHandler(int signal);
 149
 150 public:
 151   //! Openbox constructor.
 152   /*!
 153     \param argc Number of command line arguments, as received in main()
 154     \param argv The command line arguments, as received in main()
 155   */
 156   Openbox(int argc, char **argv);
 157   //! Openbox destructor.
 158   virtual ~Openbox();
 159
 160   //! Returns the state of the window manager (starting, exiting, etc)
 161   inline RunState state() const { return _state; }
 162
 163   //! Returns the Actions instance for the window manager
 164   inline Actions *actions() const { return _actions; }
 165
 166   //! Returns the Bindings instance for the window manager
 167   inline Bindings *bindings() const { return _bindings; }
 168
 169   //! Returns a managed screen or a null pointer
 170   /*!
 171     ALWAYS check the return value for a non-null, as any unmanaged screens
 172     will return one. This includes screen(0) if the first managed screen is 1.
 173   */
 174   inline Screen *screen(int num) {
 175     assert(num >= 0); assert(num < (signed)ScreenCount(**otk::display));
 176     if (num >= (signed)_screens.size()) return 0;
 177     return _screens[num];
 178   }
 179
 180   //! Returns the mouse cursors used throughout Openbox
 181   inline const Cursors &cursors() const { return _cursors; }
 182
 183   //! The main function of the Openbox class
 184   /*!
 185     This function should be called after instantiating the Openbox class.
 186     It loops indefinately while handling all events for the application.
 187     The Openbox::shutdown method will cause this function to exit.
 188   */
 189   void eventLoop();
 190
 191   //! Adds an Client to the client list for lookups
 192   void addClient(Window window, Client *client);
 193
 194   //! Removes an Client from the client list for lookups
 195   void removeClient(Window window);
 196
 197   //! Finds an Client based on its window id
 198   Client *findClient(Window window);
 199
 200   //! The client with input focus
 201   inline Client *focusedClient() { return _focused_client; }
 202
 203   //! Change the client which has focus.
 204   /*!
 205     This is called by the clients themselves when their focus state changes.
 206   */
 207   void setFocusedClient(Client *c);
 208
 209   //! The screen with input focus
 210   inline Screen *focusedScreen() { return _focused_screen; }
 211
 212   //! Requests that the window manager exit
 213   /*!
 214     Causes the Openbox::eventLoop function to stop looping, so that the window
 215     manager can be destroyed.
 216   */
 217   inline void shutdown() { _shutdown = true; }
 218
 219   inline void restart(const std::string &bin = "") {
 220     _shutdown = true; _restart = true; _restart_prog = bin;
 221   }
 222
 223   //! True if Openbox should be restarted instead of exiting
 224   inline bool doRestart() const { return _restart; }
 225
 226   //! The command line requested to be executed in place of restarting
 227   //! Openbox the way it was run previously.
 228   inline const std::string &restartProgram() const { return _restart_prog; }
 229 };
 230
 231 }
 232
 233 #endif // __openbox_hh