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 "config.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 struct DesktopLayout {
  29   enum Corner { TopLeft, TopRight, BottomRight, BottomLeft };
  30   enum Direction { Horizontal, Vertical };
  31
  32   Direction orientation;
  33   Corner start_corner;
  34   unsigned int rows;
  35   unsigned int columns;
  36 };
  37
  38 //! Manages a single screen
  39 /*!
  40 */
  41 class Screen : public otk::EventHandler {
  42 public:
  43   //! Holds a list of otk::Strut objects
  44   typedef std::vector<otk::Strut> StrutList;
  45   //! Holds a list of otk::Rect objects
  46   typedef std::vector<otk::Rect> RectList;
  47
  48   static const unsigned long event_mask = ColormapChangeMask |
  49                                           EnterWindowMask |
  50                                           LeaveWindowMask |
  51                                           PropertyChangeMask |
  52                                           SubstructureNotifyMask |
  53                                           SubstructureRedirectMask |
  54                                           ButtonPressMask |
  55                                           ButtonReleaseMask;
  56
  57   //! All managed clients on the screen (in order of being mapped)
  58   std::list<Client*> clients;
  59
  60 private:
  61   //! Was %Openbox able to manage the screen?
  62   bool _managed;
  63
  64   //! The number of the screen on the X server
  65   int _number;
  66
  67   //! Information about this screen
  68   const otk::ScreenInfo *_info;
  69
  70   //! Configuration options from the user scripts
  71   Config _config;
  72
  73   //! Area usable for placement etc (total - struts), one per desktop,
  74   //! plus one extra for windows on all desktops
  75   RectList _area;
  76
  77   //! Combined strut from all of the clients' struts, one per desktop,
  78   //! plus one extra for windows on all desktops
  79   StrutList _struts;
  80
  81   //!  An offscreen window which gets focus when nothing else has it
  82   Window _focuswindow;
  83
  84   //! An offscreen window which shows that a NETWM compliant window manager is
  85   //! running
  86   Window _supportwindow;
  87
  88   //! A list of all managed clients on the screen, in their stacking order
  89   std::list<Client*> _stacking;
  90
  91   //! The desktop currently being displayed
  92   unsigned int _desktop;
  93
  94   //! The number of desktops
  95   unsigned int _num_desktops;
  96
  97   //! The names of all desktops
  98   otk::Property::StringVect _desktop_names;
  99
 100   //! The layout of the desktops as specified by an EWMH compliant pager
 101   DesktopLayout _layout;
 102
 103   //! True when the window manager is in 'showing desktop' mode
 104   bool _showing_desktop;
 105
 106   //! Calculate the Screen::_area member
 107   void calcArea();
 108   //! Set the list of supported NETWM atoms on the root window
 109   void changeSupportedAtoms();
 110   //! Set the client list on the root window
 111   /*!
 112     Sets the _NET_CLIENT_LIST root window property.<br>
 113     Also calls Screen::updateStackingList.
 114   */
 115   void changeClientList();
 116   //! Set the client stacking list on the root window
 117   /*!
 118     Set the _NET_CLIENT_LIST_STACKING root window property.
 119   */
 120   void changeStackingList();
 121   //! Set the work area hint on the root window
 122   /*!
 123     Set the _NET_WORKAREA root window property.
 124   */
 125   void changeWorkArea();
 126
 127   //! Get desktop names from the root window property
 128   void updateDesktopNames();
 129
 130   //! Gets the layout of the desktops from the root window property
 131   void updateDesktopLayout();
 132
 133   //! Changes to the specified desktop, displaying windows on it and hiding
 134   //! windows on the others.
 135   /*!
 136     @param desktop The number of the desktop to switch to (starts from 0).
 137     If the desktop is out of valid range, it is ignored.
 138   */
 139   void changeDesktop(unsigned int desktop);
 140
 141   //! Changes the number of desktops.
 142   /*!
 143     @param num The number of desktops that should exist. This value must be
 144                greater than 0 or it will be ignored.
 145   */
 146   void changeNumDesktops(unsigned int num);
 147
 148 public:
 149   //! Constructs a new Screen object
 150   Screen(int screen);
 151   //! Destroys the Screen object
 152   virtual ~Screen();
 153
 154   inline int number() const { return _number; }
 155
 156   //! Returns if the screen was successfully managed
 157   /*!
 158     If this is false, then the screen should be deleted and should NOT be
 159     used.
 160   */
 161   inline bool managed() const { return _managed; }
 162
 163   //! Returns the config options set by the user scripts
 164   Config& config() { return _config; }
 165
 166   //!  An offscreen window which gets focus when nothing else has it
 167   inline Window focuswindow() const { return _focuswindow; }
 168   //! Returns the desktop being displayed
 169   inline unsigned int desktop() const { return _desktop; }
 170   //! Returns the number of desktops
 171   inline unsigned int numDesktops() const { return _num_desktops; }
 172   //! When true, the desktop is being shown and all clients are hidden
 173   inline bool showingDesktop() const { return _showing_desktop; }
 174
 175   //! Returns the area of the screen not reserved by applications' Struts
 176   /*!
 177     @param desktop The desktop number of the area to retrieve for. A value of
 178                    0xffffffff will return an area that combines all struts
 179                    on all desktops.
 180   */
 181   const otk::Rect& area(unsigned int desktop) const;
 182
 183   //! Gives the layout of how the desktops are being displayed, the number of
 184   //! rows and columns etc.
 185   const DesktopLayout& desktopLayout() const { return _layout; }
 186
 187   //! Shows and focuses the desktop and hides all the client windows, or
 188   //! returns to the normal state, showing client windows.
 189   void showDesktop(bool show);
 190
 191   //! Update's the screen's combined strut of all the clients.
 192   /*!
 193     Clients should call this whenever they change their strut.
 194   */
 195   void updateStruts();
 196
 197   //! Manage any pre-existing windows on the screen
 198   void manageExisting();
 199   //! Manage a client window
 200   /*!
 201     This gives the window a frame, reparents it, selects events on it, etc.
 202   */
 203   void manageWindow(Window window);
 204   //! Unmanage a client
 205   /*!
 206     This removes the window's frame, reparents it to root, unselects events on
 207     it, etc.
 208     @param client The client to unmanage
 209   */
 210   void unmanageWindow(Client *client);
 211
 212   //! Raises a client window above all others in its stacking layer
 213   /*!
 214     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 215     1) raiseWindow can be called after changing a Client's stack layer, and
 216        the list will be reorganized properly.<br>
 217     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 218        called for the specified client.
 219   */
 220   void raiseWindow(Client *client);
 221
 222   //! Lowers a client window below all others in its stacking layer
 223   void lowerWindow(Client *client);
 224
 225   const otk::Property::StringVect& desktopNames() const
 226     { return _desktop_names; }
 227
 228   void installColormap(bool install) const;
 229
 230   virtual void propertyHandler(const XPropertyEvent &e);
 231   virtual void clientMessageHandler(const XClientMessageEvent &e);
 232   virtual void mapRequestHandler(const XMapRequestEvent &e);
 233 };
 234
 235 }
 236
 237 #endif// __screen_hh