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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef   __screen_hh
   3 #define   __screen_hh
   4
   5 /*! @file screen.hh
   6   @brief Screen manages a single screen
   7 */
   8
   9 extern "C" {
  10 #include <X11/Xlib.h>
  11 }
  12
  13 #include "widgetbase.hh"
  14 #include "otk/strut.hh"
  15 #include "otk/rect.hh"
  16 #include "otk/screeninfo.hh"
  17 #include "otk/eventhandler.hh"
  18 #include "otk/property.hh"
  19 #include "otk/ustring.hh"
  20
  21 #include <string>
  22 #include <list>
  23
  24 namespace ob {
  25
  26 class Client;
  27
  28 //! Manages a single screen
  29 /*!
  30 */
  31 class Screen : public otk::EventHandler, public WidgetBase {
  32 public:
  33   //! Holds a list of otk::Strut objects
  34   typedef std::list<otk::Strut*> StrutList;
  35
  36   static const unsigned long event_mask = ColormapChangeMask |
  37                                           EnterWindowMask |
  38                                           LeaveWindowMask |
  39                                           PropertyChangeMask |
  40                                           SubstructureNotifyMask |
  41                                           SubstructureRedirectMask |
  42                                           ButtonPressMask |
  43                                           ButtonReleaseMask;
  44
  45   //! Holds a list of Clients
  46   typedef std::list<Client*> ClientList;
  47   //! All managed clients on the screen (in order of being mapped)
  48   ClientList clients;
  49
  50 private:
  51   //! Was %Openbox able to manage the screen?
  52   bool _managed;
  53
  54   //! The number of the screen on the X server
  55   int _number;
  56
  57   //! Information about this screen
  58   const otk::ScreenInfo *_info;
  59
  60   //! Is the root colormap currently installed?
  61   bool _root_cmap_installed;
  62
  63   //! Area usable for placement etc (total - struts)
  64   otk::Rect _area;
  65
  66   //! Combined strut from all of the clients' struts
  67   otk::Strut _strut;
  68
  69   //!  An offscreen window which gets focus when nothing else has it
  70   Window _focuswindow;
  71
  72   //! An offscreen window which shows that a NETWM compliant window manager is
  73   //! running
  74   Window _supportwindow;
  75
  76   //! A list of all managed clients on the screen, in their stacking order
  77   ClientList _stacking;
  78
  79   //! The desktop currently being displayed
  80   long _desktop;
  81
  82   //! The number of desktops
  83   long _num_desktops;
  84
  85   //! The names of all desktops
  86   otk::Property::StringVect _desktop_names;
  87
  88   //! Calculate the Screen::_area member
  89   void calcArea();
  90   //! Set the list of supported NETWM atoms on the root window
  91   void changeSupportedAtoms();
  92   //! Set the client list on the root window
  93   /*!
  94     Sets the _NET_CLIENT_LIST root window property.<br>
  95     Also calls Screen::updateStackingList.
  96   */
  97   void changeClientList();
  98   //! Set the client stacking list on the root window
  99   /*!
 100     Set the _NET_CLIENT_LIST_STACKING root window property.
 101   */
 102   void changeStackingList();
 103   //! Set the work area hint on the root window
 104   /*!
 105     Set the _NET_WORKAREA root window property.
 106   */
 107   void changeWorkArea();
 108
 109   //! Get desktop names from the root window property
 110   void updateDesktopNames();
 111
 112   //! Changes to the specified desktop, displaying windows on it and hiding
 113   //! windows on the others.
 114   /*!
 115     @param desktop The number of the desktop to switch to (starts from 0).
 116     If the desktop is out of valid range, it is ignored.
 117   */
 118   void changeDesktop(long desktop);
 119
 120   //! Changes the number of desktops.
 121   /*!
 122     @param num The number of desktops that should exist. This value must be
 123                greater than 0 or it will be ignored.
 124   */
 125   void changeNumDesktops(long num);
 126
 127 public:
 128 #ifndef SWIG
 129   //! Constructs a new Screen object
 130   Screen(int screen);
 131   //! Destroys the Screen object
 132   virtual ~Screen();
 133 #endif
 134
 135   inline int number() const { return _number; }
 136
 137   //! Returns if the screen was successfully managed
 138   /*!
 139     If this is false, then the screen should be deleted and should NOT be
 140     used.
 141   */
 142   inline bool managed() const { return _managed; }
 143   //! Returns the area of the screen not reserved by applications' Struts
 144   inline const otk::Rect &area() const { return _area; }
 145   //!  An offscreen window which gets focus when nothing else has it
 146   inline Window focuswindow() const { return _focuswindow; }
 147   //! Returns the desktop being displayed
 148   inline long desktop() const { return _desktop; }
 149   //! Returns the number of desktops
 150   inline long numDesktops() const { return _num_desktops; }
 151
 152   //! Update's the screen's combined strut of all the clients.
 153   /*!
 154     Clients should call this whenever they change their strut.
 155   */
 156   void updateStrut();
 157
 158   //! Manage any pre-existing windows on the screen
 159   void manageExisting();
 160   //! Manage a client window
 161   /*!
 162     This gives the window a frame, reparents it, selects events on it, etc.
 163   */
 164   void manageWindow(Window window);
 165   //! Unmanage a client
 166   /*!
 167     This removes the window's frame, reparents it to root, unselects events on
 168     it, etc.
 169     @param client The client to unmanage
 170   */
 171   void unmanageWindow(Client *client);
 172
 173   //! Raises a client window above all others in its stacking layer
 174   /*!
 175     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 176     1) raiseWindow can be called after changing a Client's stack layer, and
 177        the list will be reorganized properly.<br>
 178     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 179        called for the specified client.
 180   */
 181   void raiseWindow(Client *client);
 182
 183   //! Lowers a client window below all others in its stacking layer
 184   void lowerWindow(Client *client);
 185
 186   //! Sets the name of a desktop by changing the root window property
 187   /*!
 188     @param i The index of the desktop to set the name for (starts at 0)
 189     @param name The name to set for the desktop
 190     If the index is too large, it is simply ignored.
 191   */
 192   void setDesktopName(long i, const otk::ustring &name);
 193
 194   void installColormap(bool install) const;
 195
 196   virtual void propertyHandler(const XPropertyEvent &e);
 197   virtual void clientMessageHandler(const XClientMessageEvent &e);
 198   virtual void mapRequestHandler(const XMapRequestEvent &e);
 199 };
 200
 201 }
 202
 203 #endif// __screen_hh