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