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 "widgetbase.hh"
  14 #include "otk/renderstyle.hh"
  15 #include "otk/strut.hh"
  16 #include "otk/rect.hh"
  17 #include "otk/screeninfo.hh"
  18 #include "otk/eventhandler.hh"
  19 #include "otk/property.hh"
  20 #include "otk/ustring.hh"
  21
  22 #include <string>
  23 #include <list>
  24
  25 namespace ob {
  26
  27 class Client;
  28
  29 //! Manages a single screen
  30 /*!
  31 */
  32 class Screen : public otk::EventHandler, public WidgetBase {
  33 public:
  34   //! Holds a list of otk::Strut objects
  35   typedef std::list<otk::Strut*> StrutList;
  36
  37   static const unsigned long event_mask = ColormapChangeMask |
  38                                           EnterWindowMask |
  39                                           LeaveWindowMask |
  40                                           PropertyChangeMask |
  41                                           SubstructureNotifyMask |
  42                                           SubstructureRedirectMask |
  43                                           ButtonPressMask |
  44                                           ButtonReleaseMask;
  45
  46   //! Holds a list of Clients
  47   typedef std::list<Client*> ClientList;
  48   //! All managed clients on the screen (in order of being mapped)
  49   ClientList clients;
  50
  51 private:
  52   //! Was %Openbox able to manage the screen?
  53   bool _managed;
  54
  55   //! The number of the screen on the X server
  56   int _number;
  57
  58   //! Information about this screen
  59   const otk::ScreenInfo *_info;
  60
  61   //! The style with which to render on the screen
  62   otk::RenderStyle _style;
  63
  64   //! Is the root colormap currently installed?
  65   bool _root_cmap_installed;
  66
  67   //! Area usable for placement etc (total - struts)
  68   otk::Rect _area;
  69
  70   //! Combined strut from all of the clients' struts
  71   otk::Strut _strut;
  72
  73   //!  An offscreen window which gets focus when nothing else has it
  74   Window _focuswindow;
  75
  76   //! An offscreen window which shows that a NETWM compliant window manager is
  77   //! running
  78   Window _supportwindow;
  79
  80   //! A list of all managed clients on the screen, in their stacking order
  81   ClientList _stacking;
  82
  83   //! The desktop currently being displayed
  84   long _desktop;
  85
  86   //! The number of desktops
  87   long _num_desktops;
  88
  89   //! The names of all desktops
  90   otk::Property::StringVect _desktop_names;
  91
  92   //! Calculate the Screen::_area member
  93   void calcArea();
  94   //! Set the list of supported NETWM atoms on the root window
  95   void changeSupportedAtoms();
  96   //! Set the client list on the root window
  97   /*!
  98     Sets the _NET_CLIENT_LIST root window property.<br>
  99     Also calls Screen::updateStackingList.
 100   */
 101   void changeClientList();
 102   //! Set the client stacking list on the root window
 103   /*!
 104     Set the _NET_CLIENT_LIST_STACKING root window property.
 105   */
 106   void changeStackingList();
 107   //! Set the work area hint on the root window
 108   /*!
 109     Set the _NET_WORKAREA root window property.
 110   */
 111   void changeWorkArea();
 112
 113   //! Get desktop names from the root window property
 114   void updateDesktopNames();
 115
 116   //! Changes to the specified desktop, displaying windows on it and hiding
 117   //! windows on the others.
 118   /*!
 119     @param desktop The number of the desktop to switch to (starts from 0).
 120     If the desktop is out of valid range, it is ignored.
 121   */
 122   void changeDesktop(long desktop);
 123
 124   //! Changes the number of desktops.
 125   /*!
 126     @param num The number of desktops that should exist. This value must be
 127                greater than 0 or it will be ignored.
 128   */
 129   void changeNumDesktops(long num);
 130
 131 public:
 132 #ifndef SWIG
 133   //! Constructs a new Screen object
 134   Screen(int screen);
 135   //! Destroys the Screen object
 136   virtual ~Screen();
 137 #endif
 138
 139   inline int number() const { return _number; }
 140
 141   //! Returns if the screen was successfully managed
 142   /*!
 143     If this is false, then the screen should be deleted and should NOT be
 144     used.
 145   */
 146   inline bool managed() const { return _managed; }
 147   //! Returns the area of the screen not reserved by applications' Struts
 148   inline const otk::Rect &area() const { return _area; }
 149   //! Returns the style in use on the screen
 150   inline const otk::RenderStyle *style() const { return &_style; }
 151   //!  An offscreen window which gets focus when nothing else has it
 152   inline Window focuswindow() const { return _focuswindow; }
 153   //! Returns the desktop being displayed
 154   inline long desktop() const { return _desktop; }
 155   //! Returns the number of desktops
 156   inline long numDesktops() const { return _num_desktops; }
 157
 158   //! Update's the screen's combined strut of all the clients.
 159   /*!
 160     Clients should call this whenever they change their strut.
 161   */
 162   void updateStrut();
 163
 164   //! Manage any pre-existing windows on the screen
 165   void manageExisting();
 166   //! Manage a client window
 167   /*!
 168     This gives the window a frame, reparents it, selects events on it, etc.
 169   */
 170   void manageWindow(Window window);
 171   //! Unmanage a client
 172   /*!
 173     This removes the window's frame, reparents it to root, unselects events on
 174     it, etc.
 175     @param client The client to unmanage
 176   */
 177   void unmanageWindow(Client *client);
 178
 179   //! Raises a client window above all others in its stacking layer
 180   /*!
 181     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 182     1) raiseWindow can be called after changing a Client's stack layer, and
 183        the list will be reorganized properly.<br>
 184     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 185        called for the specified client.
 186   */
 187   void raiseWindow(Client *client);
 188
 189   //! Lowers a client window below all others in its stacking layer
 190   void lowerWindow(Client *client);
 191
 192   //! Sets the name of a desktop by changing the root window property
 193   /*!
 194     @param i The index of the desktop to set the name for (starts at 0)
 195     @param name The name to set for the desktop
 196     If the index is too large, it is simply ignored.
 197   */
 198   void setDesktopName(long i, const otk::ustring &name);
 199
 200   void installColormap(bool install) const;
 201
 202   virtual void propertyHandler(const XPropertyEvent &e);
 203   virtual void clientMessageHandler(const XClientMessageEvent &e);
 204   virtual void mapRequestHandler(const XMapRequestEvent &e);
 205 };
 206
 207 }
 208
 209 #endif// __screen_hh