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   //! All managed clients on the screen (in order of being mapped)
  57   std::list<Client*> clients;
  58
  59 private:
  60   //! Was %Openbox able to manage the screen?
  61   bool _managed;
  62
  63   //! The number of the screen on the X server
  64   int _number;
  65
  66   //! Information about this screen
  67   const otk::ScreenInfo *_info;
  68
  69   //! Area usable for placement etc (total - struts), one per desktop,
  70   //! plus one extra for windows on all desktops
  71   RectList _area;
  72
  73   //! Combined strut from all of the clients' struts, one per desktop,
  74   //! plus one extra for windows on all desktops
  75   StrutList _struts;
  76
  77   //!  An offscreen window which gets focus when nothing else has it
  78   Window _focuswindow;
  79
  80   //! An offscreen window which shows that a NETWM compliant window manager is
  81   //! running
  82   Window _supportwindow;
  83
  84   //! A list of all managed clients on the screen, in their stacking order
  85   std::list<Client*> _stacking;
  86
  87   //! The desktop currently being displayed
  88   unsigned int _desktop;
  89
  90   //! The number of desktops
  91   unsigned int _num_desktops;
  92
  93   //! The names of all desktops
  94   otk::Property::StringVect _desktop_names;
  95
  96   //! The layout of the desktops as specified by an EWMH compliant pager
  97   DesktopLayout _layout;
  98
  99   //! True when the window manager is in 'showing desktop' mode
 100   bool _showing_desktop;
 101
 102   //! Calculate the Screen::_area member
 103   void calcArea();
 104   //! Set the list of supported NETWM atoms on the root window
 105   void changeSupportedAtoms();
 106   //! Set the client list on the root window
 107   /*!
 108     Sets the _NET_CLIENT_LIST root window property.<br>
 109     Also calls Screen::updateStackingList.
 110   */
 111   void changeClientList();
 112   //! Set the client stacking list on the root window
 113   /*!
 114     Set the _NET_CLIENT_LIST_STACKING root window property.
 115   */
 116   void changeStackingList();
 117   //! Set the work area hint on the root window
 118   /*!
 119     Set the _NET_WORKAREA root window property.
 120   */
 121   void changeWorkArea();
 122
 123   //! Get desktop names from the root window property
 124   void updateDesktopNames();
 125
 126   //! Gets the layout of the desktops from the root window property
 127   void updateDesktopLayout();
 128
 129   //! Changes to the specified desktop, displaying windows on it and hiding
 130   //! windows on the others.
 131   /*!
 132     @param desktop The number of the desktop to switch to (starts from 0).
 133     If the desktop is out of valid range, it is ignored.
 134   */
 135   void changeDesktop(unsigned int desktop);
 136
 137   //! Changes the number of desktops.
 138   /*!
 139     @param num The number of desktops that should exist. This value must be
 140                greater than 0 or it will be ignored.
 141   */
 142   void changeNumDesktops(unsigned int num);
 143
 144 public:
 145   //! Constructs a new Screen object
 146   Screen(int screen);
 147   //! Destroys the Screen object
 148   virtual ~Screen();
 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
 159   //!  An offscreen window which gets focus when nothing else has it
 160   inline Window focuswindow() const { return _focuswindow; }
 161   //! Returns the desktop being displayed
 162   inline unsigned int desktop() const { return _desktop; }
 163   //! Returns the number of desktops
 164   inline unsigned int numDesktops() const { return _num_desktops; }
 165   //! When true, the desktop is being shown and all clients are hidden
 166   inline bool showingDesktop() const { return _showing_desktop; }
 167
 168   //! Returns the area of the screen not reserved by applications' Struts
 169   /*!
 170     @param desktop The desktop number of the area to retrieve for. A value of
 171                    0xffffffff will return an area that combines all struts
 172                    on all desktops.
 173   */
 174   const otk::Rect& area(unsigned int desktop) const;
 175
 176   //! Gives the layout of how the desktops are being displayed, the number of
 177   //! rows and columns etc.
 178   const DesktopLayout& desktopLayout() const { return _layout; }
 179
 180   //! Shows and focuses the desktop and hides all the client windows, or
 181   //! returns to the normal state, showing client windows.
 182   void showDesktop(bool show);
 183
 184   //! Update's the screen's combined strut of all the clients.
 185   /*!
 186     Clients should call this whenever they change their strut.
 187   */
 188   void updateStruts();
 189
 190   //! Manage any pre-existing windows on the screen
 191   void manageExisting();
 192   //! Manage a client window
 193   /*!
 194     This gives the window a frame, reparents it, selects events on it, etc.
 195   */
 196   void manageWindow(Window window);
 197   //! Unmanage a client
 198   /*!
 199     This removes the window's frame, reparents it to root, unselects events on
 200     it, etc.
 201     @param client The client to unmanage
 202   */
 203   void unmanageWindow(Client *client);
 204
 205   //! Raises a client window above all others in its stacking layer
 206   /*!
 207     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 208     1) raiseWindow can be called after changing a Client's stack layer, and
 209        the list will be reorganized properly.<br>
 210     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 211        called for the specified client.
 212   */
 213   void raiseWindow(Client *client);
 214
 215   //! Lowers a client window below all others in its stacking layer
 216   void lowerWindow(Client *client);
 217
 218   const otk::Property::StringVect& desktopNames() const
 219     { return _desktop_names; }
 220
 221   void installColormap(bool install) const;
 222
 223   virtual void propertyHandler(const XPropertyEvent &e);
 224   virtual void clientMessageHandler(const XClientMessageEvent &e);
 225   virtual void mapRequestHandler(const XMapRequestEvent &e);
 226 };
 227
 228 }
 229
 230 #endif// __screen_hh