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   //! Holds a list of Clients
  58   typedef std::list<Client*> ClientList;
  59   //! All managed clients on the screen (in order of being mapped)
  60   ClientList clients;
  61
  62 private:
  63   //! Was %Openbox able to manage the screen?
  64   bool _managed;
  65
  66   //! The number of the screen on the X server
  67   int _number;
  68
  69   //! Information about this screen
  70   const otk::ScreenInfo *_info;
  71
  72   //! Configuration options from the user scripts
  73   Config _config;
  74
  75   //! Area usable for placement etc (total - struts), one per desktop,
  76   //! plus one extra for windows on all desktops
  77   RectList _area;
  78
  79   //! Combined strut from all of the clients' struts, one per desktop,
  80   //! plus one extra for windows on all desktops
  81   StrutList _struts;
  82
  83   //!  An offscreen window which gets focus when nothing else has it
  84   Window _focuswindow;
  85
  86   //! An offscreen window which shows that a NETWM compliant window manager is
  87   //! running
  88   Window _supportwindow;
  89
  90   //! A list of all managed clients on the screen, in their stacking order
  91   ClientList _stacking;
  92
  93   //! The desktop currently being displayed
  94   unsigned int _desktop;
  95
  96   //! The number of desktops
  97   unsigned int _num_desktops;
  98
  99   //! The names of all desktops
 100   otk::Property::StringVect _desktop_names;
 101
 102   //! The layout of the desktops as specified by an EWMH compliant pager
 103   DesktopLayout _layout;
 104
 105   //! True when the window manager is in 'showing desktop' mode
 106   bool _showing_desktop;
 107
 108   //! Calculate the Screen::_area member
 109   void calcArea();
 110   //! Set the list of supported NETWM atoms on the root window
 111   void changeSupportedAtoms();
 112   //! Set the client list on the root window
 113   /*!
 114     Sets the _NET_CLIENT_LIST root window property.<br>
 115     Also calls Screen::updateStackingList.
 116   */
 117   void changeClientList();
 118   //! Set the client stacking list on the root window
 119   /*!
 120     Set the _NET_CLIENT_LIST_STACKING root window property.
 121   */
 122   void changeStackingList();
 123   //! Set the work area hint on the root window
 124   /*!
 125     Set the _NET_WORKAREA root window property.
 126   */
 127   void changeWorkArea();
 128
 129   //! Get desktop names from the root window property
 130   void updateDesktopNames();
 131
 132   //! Gets the layout of the desktops from the root window property
 133   void updateDesktopLayout();
 134
 135   //! Changes to the specified desktop, displaying windows on it and hiding
 136   //! windows on the others.
 137   /*!
 138     @param desktop The number of the desktop to switch to (starts from 0).
 139     If the desktop is out of valid range, it is ignored.
 140   */
 141   void changeDesktop(unsigned int desktop);
 142
 143   //! Changes the number of desktops.
 144   /*!
 145     @param num The number of desktops that should exist. This value must be
 146                greater than 0 or it will be ignored.
 147   */
 148   void changeNumDesktops(unsigned int num);
 149
 150 public:
 151 #ifndef SWIG
 152   //! Constructs a new Screen object
 153   Screen(int screen);
 154   //! Destroys the Screen object
 155   virtual ~Screen();
 156 #endif
 157
 158   inline int number() const { return _number; }
 159
 160   //! Returns if the screen was successfully managed
 161   /*!
 162     If this is false, then the screen should be deleted and should NOT be
 163     used.
 164   */
 165   inline bool managed() const { return _managed; }
 166
 167   //! Returns the config options set by the user scripts
 168   const Config& config() const { return _config; }
 169
 170   //!  An offscreen window which gets focus when nothing else has it
 171   inline Window focuswindow() const { return _focuswindow; }
 172   //! Returns the desktop being displayed
 173   inline unsigned int desktop() const { return _desktop; }
 174   //! Returns the number of desktops
 175   inline unsigned int numDesktops() const { return _num_desktops; }
 176   //! When true, the desktop is being shown and all clients are hidden
 177   inline bool showingDesktop() const { return _showing_desktop; }
 178
 179   //! Returns the area of the screen not reserved by applications' Struts
 180   /*!
 181     @param desktop The desktop number of the area to retrieve for. A value of
 182                    0xffffffff will return an area that combines all struts
 183                    on all desktops.
 184   */
 185   const otk::Rect& area(unsigned int desktop) const;
 186
 187   //! Gives the layout of how the desktops are being displayed, the number of
 188   //! rows and columns etc.
 189   const DesktopLayout& desktopLayout() const { return _layout; }
 190
 191   //! Shows and focuses the desktop and hides all the client windows, or
 192   //! returns to the normal state, showing client windows.
 193   void showDesktop(bool show);
 194
 195   //! Update's the screen's combined strut of all the clients.
 196   /*!
 197     Clients should call this whenever they change their strut.
 198   */
 199   void updateStruts();
 200
 201   //! Manage any pre-existing windows on the screen
 202   void manageExisting();
 203   //! Manage a client window
 204   /*!
 205     This gives the window a frame, reparents it, selects events on it, etc.
 206   */
 207   void manageWindow(Window window);
 208   //! Unmanage a client
 209   /*!
 210     This removes the window's frame, reparents it to root, unselects events on
 211     it, etc.
 212     @param client The client to unmanage
 213   */
 214   void unmanageWindow(Client *client);
 215
 216   //! Raises a client window above all others in its stacking layer
 217   /*!
 218     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 219     1) raiseWindow can be called after changing a Client's stack layer, and
 220        the list will be reorganized properly.<br>
 221     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 222        called for the specified client.
 223   */
 224   void raiseWindow(Client *client);
 225
 226   //! Lowers a client window below all others in its stacking layer
 227   void lowerWindow(Client *client);
 228
 229   //! Sets the name of a desktop by changing the root window property
 230   /*!
 231     @param i The index of the desktop to set the name for (starts at 0)
 232     @param name The name to set for the desktop
 233     If the index is too large, it is simply ignored.
 234   */
 235   void setDesktopName(unsigned int i, const otk::ustring &name);
 236
 237   otk::ustring desktopName(unsigned int i) const;
 238
 239   void installColormap(bool install) const;
 240
 241   virtual void propertyHandler(const XPropertyEvent &e);
 242   virtual void clientMessageHandler(const XClientMessageEvent &e);
 243   virtual void mapRequestHandler(const XMapRequestEvent &e);
 244 };
 245
 246 }
 247
 248 #endif// __screen_hh