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   //! Optimize for a remote/low-bandwidth connection to the display?
  98   bool _remote;
  99
 100   //! A list of all managed clients
 101   ClientMap _clients;
 102
 103   //! A list of all the managed screens
 104   ScreenList _screens;
 105
 106   //! The number of managed screens
 107   int _managed_count;
 108
 109   //! The action interface through which all user-available actions occur
 110   Actions *_actions;
 111
 112   //! The interface through which keys/buttons are grabbed and handled
 113   Bindings *_bindings;
 114
 115   //! The running state of the window manager
 116   RunState _state;
 117
 118   //! Mouse cursors used throughout Openbox
 119   Cursors _cursors;
 120
 121   //! When set to true, the Openbox::eventLoop function will stop and return
 122   bool _shutdown;
 123
 124   //! When set to true, and Openbox is about to exit, it will spawn a new
 125   //! process
 126   bool _restart;
 127
 128   //! If this contains anything, a restart will try to execute the program in
 129   //! this variable, and will fallback to reexec'ing itself if that fails
 130   std::string _restart_prog;
 131
 132   //! The client with input focus
 133   /*!
 134     Updated by the clients themselves.
 135   */
 136   Client *_focused_client;
 137
 138   //! The screen with input focus
 139   /*!
 140     Updated by the clients when they update the Openbox::focused_client
 141     property.
 142   */
 143   Screen *_focused_screen;
 144
 145   //! Parses the command line used when executing this application
 146   void parseCommandLine(int argv, char **argv);
 147   //! Displays the version string to stdout
 148   void showVersion();
 149   //! Displays usage information and help to stdout
 150   void showHelp();
 151
 152   //! Handles signal events for the application
 153   static void signalHandler(int signal);
 154
 155 public:
 156   //! Openbox constructor.
 157   /*!
 158     \param argc Number of command line arguments, as received in main()
 159     \param argv The command line arguments, as received in main()
 160   */
 161   Openbox(int argc, char **argv);
 162   //! Openbox destructor.
 163   virtual ~Openbox();
 164
 165   //! Returns the state of the window manager (starting, exiting, etc)
 166   inline RunState state() const { return _state; }
 167
 168   //! Returns the Actions instance for the window manager
 169   inline Actions *actions() const { return _actions; }
 170
 171   //! Returns the Bindings instance for the window manager
 172   inline Bindings *bindings() const { return _bindings; }
 173
 174   //! Returns a managed screen or a null pointer
 175   /*!
 176     ALWAYS check the return value for a non-null, as any unmanaged screens
 177     will return one. This includes screen(0) if the first managed screen is 1.
 178   */
 179   inline Screen *screen(int num) {
 180     assert(num >= 0); assert(num < (signed)ScreenCount(**otk::display));
 181     if (num < 0 || num >= (signed)_screens.size()) return 0;
 182     return _screens[num];
 183   }
 184
 185   inline int managedScreenCount() const { return _managed_count; }
 186
 187   inline Screen *managedScreen(int num) {
 188     assert(num >= 0); assert(num < _managed_count);
 189     if (num < 0 || num >= _managed_count) return 0;
 190     ScreenList::iterator it, end = _screens.end();
 191     int i = -1;
 192     for (it = _screens.begin(); it != end; ++it)
 193       if (*it && ++i == num)
 194         return *it;
 195   }
 196
 197   //! Returns the mouse cursors used throughout Openbox
 198   inline const Cursors &cursors() const { return _cursors; }
 199
 200   //! The main function of the Openbox class
 201   /*!
 202     This function should be called after instantiating the Openbox class.
 203     It loops indefinately while handling all events for the application.
 204     The Openbox::shutdown method will cause this function to exit.
 205   */
 206   void eventLoop();
 207
 208   //! Adds an Client to the client list for lookups
 209   void addClient(Window window, Client *client);
 210
 211   //! Removes an Client from the client list for lookups
 212   void removeClient(Window window);
 213
 214   //! Finds an Client based on its window id
 215   Client *findClient(Window window);
 216
 217   //! The client with input focus
 218   inline Client *focusedClient() { return _focused_client; }
 219
 220   //! Change the client which has focus.
 221   /*!
 222     This is called by the clients themselves when their focus state changes.
 223   */
 224   void setFocusedClient(Client *c);
 225
 226   //! The screen with input focus
 227   inline Screen *focusedScreen() { return _focused_screen; }
 228
 229   //! Requests that the window manager exit
 230   /*!
 231     Causes the Openbox::eventLoop function to stop looping, so that the window
 232     manager can be destroyed.
 233   */
 234   inline void shutdown() { _shutdown = true; }
 235
 236   inline void restart(const std::string &bin = "") {
 237     _shutdown = true; _restart = true; _restart_prog = bin;
 238   }
 239
 240   //! True if Openbox should be restarted instead of exiting
 241   inline bool doRestart() const { return _restart; }
 242
 243   //! The command line requested to be executed in place of restarting
 244   //! Openbox the way it was run previously.
 245   inline const std::string &restartProgram() const { return _restart_prog; }
 246 };
 247
 248 }
 249
 250 #endif // __openbox_hh