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 "client.hh"
  14 #include "widgetbase.hh"
  15 #include "otk/renderstyle.hh"
  16 #include "otk/strut.hh"
  17 #include "otk/rect.hh"
  18 #include "otk/screeninfo.hh"
  19 #include "otk/eventhandler.hh"
  20 #include "otk/property.hh"
  21 #include "otk/ustring.hh"
  22
  23 #include <string>
  24 #include <list>
  25
  26 namespace ob {
  27
  28 class Client;
  29
  30 //! Manages a single screen
  31 /*!
  32 */
  33 class Screen : public otk::EventHandler, public WidgetBase {
  34 public:
  35   //! Holds a list of otk::Strut objects
  36   typedef std::list<otk::Strut*> StrutList;
  37
  38   static const unsigned long event_mask = ColormapChangeMask |
  39                                           EnterWindowMask |
  40                                           LeaveWindowMask |
  41                                           PropertyChangeMask |
  42                                           SubstructureNotifyMask |
  43                                           SubstructureRedirectMask |
  44                                           ButtonPressMask |
  45                                           ButtonReleaseMask;
  46
  47   //! All managed clients on the screen (in order of being mapped)
  48   Client::List clients;
  49
  50 private:
  51   //! Was %Openbox able to manage the screen?
  52   bool _managed;
  53
  54   //! The number of the screen on the X server
  55   int _number;
  56
  57   //! Information about this screen
  58   const otk::ScreenInfo *_info;
  59
  60   //! The style with which to render on the screen
  61   otk::RenderStyle _style;
  62
  63   //! Is the root colormap currently installed?
  64   bool _root_cmap_installed;
  65
  66   //! Area usable for placement etc (total - struts)
  67   otk::Rect _area;
  68
  69   //! Combined strut from all of the clients' struts
  70   otk::Strut _strut;
  71
  72   //!  An offscreen window which gets focus when nothing else has it
  73   Window _focuswindow;
  74
  75   //! An offscreen window which shows that a NETWM compliant window manager is
  76   //! running
  77   Window _supportwindow;
  78
  79   //! A list of all managed clients on the screen, in their stacking order
  80   Client::List _stacking;
  81
  82   //! The desktop currently being displayed
  83   long _desktop;
  84
  85   //! The number of desktops
  86   long _num_desktops;
  87
  88   //! The names of all desktops
  89   otk::Property::StringVect _desktop_names;
  90
  91   //! Calculate the Screen::_area member
  92   void calcArea();
  93   //! Set the list of supported NETWM atoms on the root window
  94   void changeSupportedAtoms();
  95   //! Set the client list on the root window
  96   /*!
  97     Sets the _NET_CLIENT_LIST root window property.<br>
  98     Also calls Screen::updateStackingList.
  99   */
 100   void changeClientList();
 101   //! Set the client stacking list on the root window
 102   /*!
 103     Set the _NET_CLIENT_LIST_STACKING root window property.
 104   */
 105   void changeStackingList();
 106   //! Set the work area hint on the root window
 107   /*!
 108     Set the _NET_WORKAREA root window property.
 109   */
 110   void changeWorkArea();
 111
 112   //! Get desktop names from the root window property
 113   void updateDesktopNames();
 114
 115   //! Changes to the specified desktop, displaying windows on it and hiding
 116   //! windows on the others.
 117   /*!
 118     @param desktop The number of the desktop to switch to (starts from 0).
 119     If the desktop is out of valid range, it is ignored.
 120   */
 121   void changeDesktop(long desktop);
 122
 123   //! Changes the number of desktops.
 124   /*!
 125     @param num The number of desktops that should exist. This value must be
 126                greater than 0 or it will be ignored.
 127   */
 128   void changeNumDesktops(long num);
 129
 130 public:
 131 #ifndef SWIG
 132   //! Constructs a new Screen object
 133   Screen(int screen);
 134   //! Destroys the Screen object
 135   virtual ~Screen();
 136 #endif
 137
 138   inline int number() const { return _number; }
 139
 140   //! Returns if the screen was successfully managed
 141   /*!
 142     If this is false, then the screen should be deleted and should NOT be
 143     used.
 144   */
 145   inline bool managed() const { return _managed; }
 146   //! Returns the area of the screen not reserved by applications' Struts
 147   inline const otk::Rect &area() const { return _area; }
 148   //! Returns the style in use on the screen
 149   inline const otk::RenderStyle *style() const { return &_style; }
 150   //!  An offscreen window which gets focus when nothing else has it
 151   inline Window focuswindow() const { return _focuswindow; }
 152   //! Returns the desktop being displayed
 153   inline long desktop() const { return _desktop; }
 154   //! Returns the number of desktops
 155   inline long numDesktops() const { return _num_desktops; }
 156
 157   //! Update's the screen's combined strut of all the clients.
 158   /*!
 159     Clients should call this whenever they change their strut.
 160   */
 161   void updateStrut();
 162
 163   //! Manage any pre-existing windows on the screen
 164   void manageExisting();
 165   //! Manage a client window
 166   /*!
 167     This gives the window a frame, reparents it, selects events on it, etc.
 168   */
 169   void manageWindow(Window window);
 170   //! Unmanage a client
 171   /*!
 172     This removes the window's frame, reparents it to root, unselects events on
 173     it, etc.
 174     @param client The client to unmanage
 175   */
 176   void unmanageWindow(Client *client);
 177
 178   //! Raises a client window above all others in its stacking layer
 179   /*!
 180     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 181     1) raiseWindow can be called after changing a Client's stack layer, and
 182        the list will be reorganized properly.<br>
 183     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 184        called for the specified client.
 185   */
 186   void raiseWindow(Client *client);
 187
 188   //! Lowers a client window below all others in its stacking layer
 189   void lowerWindow(Client *client);
 190
 191   //! Sets the name of a desktop by changing the root window property
 192   /*!
 193     @param i The index of the desktop to set the name for (starts at 0)
 194     @param name The name to set for the desktop
 195     If the index is too large, it is simply ignored.
 196   */
 197   void setDesktopName(long i, const otk::ustring &name);
 198
 199   virtual void propertyHandler(const XPropertyEvent &e);
 200   virtual void clientMessageHandler(const XClientMessageEvent &e);
 201   virtual void mapRequestHandler(const XMapRequestEvent &e);
 202 };
 203
 204 }
 205
 206 #endif// __screen_hh