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 struct DesktopLayout {
  28   enum Corner { TopLeft, TopRight, BottomRight, BottomLeft };
  29   enum Direction { Horizontal, Vertical };
  30
  31   Direction orientation;
  32   Corner start_corner;
  33   unsigned int rows;
  34   unsigned int columns;
  35 };
  36
  37 //! Manages a single screen
  38 /*!
  39 */
  40 class Screen : public otk::EventHandler {
  41 public:
  42   //! Holds a list of otk::Strut objects
  43   typedef std::vector<otk::Strut> StrutList;
  44   //! Holds a list of otk::Rect objects
  45   typedef std::vector<otk::Rect> RectList;
  46
  47   static const unsigned long event_mask = ColormapChangeMask |
  48                                           EnterWindowMask |
  49                                           LeaveWindowMask |
  50                                           PropertyChangeMask |
  51                                           SubstructureNotifyMask |
  52                                           SubstructureRedirectMask |
  53                                           ButtonPressMask |
  54                                           ButtonReleaseMask;
  55
  56   //! Holds a list of Clients
  57   typedef std::list<Client*> ClientList;
  58   //! All managed clients on the screen (in order of being mapped)
  59   ClientList clients;
  60
  61 private:
  62   //! Was %Openbox able to manage the screen?
  63   bool _managed;
  64
  65   //! The number of the screen on the X server
  66   int _number;
  67
  68   //! Information about this screen
  69   const otk::ScreenInfo *_info;
  70
  71   //! Area usable for placement etc (total - struts), one per desktop,
  72   //! plus one extra for windows on all desktops
  73   RectList _area;
  74
  75   //! Combined strut from all of the clients' struts, one per desktop,
  76   //! plus one extra for windows on all desktops
  77   StrutList _struts;
  78
  79   //!  An offscreen window which gets focus when nothing else has it
  80   Window _focuswindow;
  81
  82   //! An offscreen window which shows that a NETWM compliant window manager is
  83   //! running
  84   Window _supportwindow;
  85
  86   //! A list of all managed clients on the screen, in their stacking order
  87   ClientList _stacking;
  88
  89   //! The desktop currently being displayed
  90   unsigned int _desktop;
  91
  92   //! The number of desktops
  93   unsigned int _num_desktops;
  94
  95   //! The names of all desktops
  96   otk::Property::StringVect _desktop_names;
  97
  98   DesktopLayout _layout;
  99
 100   //! Calculate the Screen::_area member
 101   void calcArea();
 102   //! Set the list of supported NETWM atoms on the root window
 103   void changeSupportedAtoms();
 104   //! Set the client list on the root window
 105   /*!
 106     Sets the _NET_CLIENT_LIST root window property.<br>
 107     Also calls Screen::updateStackingList.
 108   */
 109   void changeClientList();
 110   //! Set the client stacking list on the root window
 111   /*!
 112     Set the _NET_CLIENT_LIST_STACKING root window property.
 113   */
 114   void changeStackingList();
 115   //! Set the work area hint on the root window
 116   /*!
 117     Set the _NET_WORKAREA root window property.
 118   */
 119   void changeWorkArea();
 120
 121   //! Get desktop names from the root window property
 122   void updateDesktopNames();
 123
 124   //! Gets the layout of the desktops from the root window property
 125   void updateDesktopLayout();
 126
 127   //! Changes to the specified desktop, displaying windows on it and hiding
 128   //! windows on the others.
 129   /*!
 130     @param desktop The number of the desktop to switch to (starts from 0).
 131     If the desktop is out of valid range, it is ignored.
 132   */
 133   void changeDesktop(unsigned int desktop);
 134
 135   //! Changes the number of desktops.
 136   /*!
 137     @param num The number of desktops that should exist. This value must be
 138                greater than 0 or it will be ignored.
 139   */
 140   void changeNumDesktops(unsigned int num);
 141
 142 public:
 143 #ifndef SWIG
 144   //! Constructs a new Screen object
 145   Screen(int screen);
 146   //! Destroys the Screen object
 147   virtual ~Screen();
 148 #endif
 149
 150   inline int number() const { return _number; }
 151
 152   //! Returns if the screen was successfully managed
 153   /*!
 154     If this is false, then the screen should be deleted and should NOT be
 155     used.
 156   */
 157   inline bool managed() const { return _managed; }
 158   //!  An offscreen window which gets focus when nothing else has it
 159   inline Window focuswindow() const { return _focuswindow; }
 160   //! Returns the desktop being displayed
 161   inline unsigned int desktop() const { return _desktop; }
 162   //! Returns the number of desktops
 163   inline unsigned int numDesktops() const { return _num_desktops; }
 164
 165   //! Returns the area of the screen not reserved by applications' Struts
 166   /*!
 167     @param desktop The desktop number of the area to retrieve for. A value of
 168                    0xffffffff will return an area that combines all struts
 169                    on all desktops.
 170   */
 171   const otk::Rect& area(unsigned int desktop) const;
 172
 173   const DesktopLayout& desktopLayout() const { return _layout; }
 174
 175   //! Update's the screen's combined strut of all the clients.
 176   /*!
 177     Clients should call this whenever they change their strut.
 178   */
 179   void updateStruts();
 180
 181   //! Manage any pre-existing windows on the screen
 182   void manageExisting();
 183   //! Manage a client window
 184   /*!
 185     This gives the window a frame, reparents it, selects events on it, etc.
 186   */
 187   void manageWindow(Window window);
 188   //! Unmanage a client
 189   /*!
 190     This removes the window's frame, reparents it to root, unselects events on
 191     it, etc.
 192     @param client The client to unmanage
 193   */
 194   void unmanageWindow(Client *client);
 195
 196   //! Raises a client window above all others in its stacking layer
 197   /*!
 198     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 199     1) raiseWindow can be called after changing a Client's stack layer, and
 200        the list will be reorganized properly.<br>
 201     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 202        called for the specified client.
 203   */
 204   void raiseWindow(Client *client);
 205
 206   //! Lowers a client window below all others in its stacking layer
 207   void lowerWindow(Client *client);
 208
 209   //! Sets the name of a desktop by changing the root window property
 210   /*!
 211     @param i The index of the desktop to set the name for (starts at 0)
 212     @param name The name to set for the desktop
 213     If the index is too large, it is simply ignored.
 214   */
 215   void setDesktopName(unsigned int i, const otk::ustring &name);
 216
 217   void installColormap(bool install) const;
 218
 219   virtual void propertyHandler(const XPropertyEvent &e);
 220   virtual void clientMessageHandler(const XClientMessageEvent &e);
 221   virtual void mapRequestHandler(const XMapRequestEvent &e);
 222 };
 223
 224 }
 225
 226 #endif// __screen_hh