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/image.hh"
  16 #include "otk/strut.hh"
  17 #include "otk/rect.hh"
  18 #include "otk/style.hh"
  19 #include "otk/screeninfo.hh"
  20 #include "otk/eventhandler.hh"
  21 #include "otk/property.hh"
  22 #include "otk/ustring.hh"
  23
  24 #include <string>
  25 #include <list>
  26
  27 namespace ob {
  28
  29 class Client;
  30 class RootWindow;
  31
  32 //! Manages a single screen
  33 /*!
  34 */
  35 class Screen : public otk::EventHandler, public WidgetBase {
  36 public:
  37   //! Holds a list of otk::Strut objects
  38   typedef std::list<otk::Strut*> StrutList;
  39
  40   static const unsigned long event_mask = ColormapChangeMask |
  41                                           EnterWindowMask |
  42                                           LeaveWindowMask |
  43                                           PropertyChangeMask |
  44                                           SubstructureNotifyMask |
  45                                           SubstructureRedirectMask |
  46                                           ButtonPressMask |
  47                                           ButtonReleaseMask;
  48
  49   //! All managed clients on the screen (in order of being mapped)
  50   Client::List clients;
  51
  52 private:
  53   //! Was %Openbox able to manage the screen?
  54   bool _managed;
  55
  56   //! The number of the screen on the X server
  57   int _number;
  58
  59   //! Information about this screen
  60   const otk::ScreenInfo *_info;
  61
  62   //! The Image Control used for rendering on the screen
  63   otk::ImageControl *_image_control;
  64
  65   //! The style with which to render on the screen
  66   otk::Style _style;
  67
  68   //! Is the root colormap currently installed?
  69   bool _root_cmap_installed;
  70
  71   //! Area usable for placement etc (total - struts)
  72   otk::Rect _area;
  73
  74   //! Combined strut from all of the clients' struts
  75   otk::Strut _strut;
  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   Client::List _stacking;
  86
  87   //! The desktop currently being displayed
  88   long _desktop;
  89
  90   //! The number of desktops
  91   long _num_desktops;
  92
  93   //! The names of all desktops
  94   otk::Property::StringVect _desktop_names;
  95
  96   //! Calculate the Screen::_area member
  97   void calcArea();
  98   //! Set the list of supported NETWM atoms on the root window
  99   void changeSupportedAtoms();
 100   //! Set the client list on the root window
 101   /*!
 102     Sets the _NET_CLIENT_LIST root window property.<br>
 103     Also calls Screen::updateStackingList.
 104   */
 105   void changeClientList();
 106   //! Set the client stacking list on the root window
 107   /*!
 108     Set the _NET_CLIENT_LIST_STACKING root window property.
 109   */
 110   void changeStackingList();
 111   //! Set the work area hint on the root window
 112   /*!
 113     Set the _NET_WORKAREA root window property.
 114   */
 115   void changeWorkArea();
 116
 117   //! Get desktop names from the root window property
 118   void updateDesktopNames();
 119
 120   //! Changes to the specified desktop, displaying windows on it and hiding
 121   //! windows on the others.
 122   /*!
 123     @param desktop The number of the desktop to switch to (starts from 0).
 124     If the desktop is out of valid range, it is ignored.
 125   */
 126   void changeDesktop(long desktop);
 127
 128   //! Changes the number of desktops.
 129   /*!
 130     @param num The number of desktops that should exist. This value must be
 131                greater than 0 or it will be ignored.
 132   */
 133   void changeNumDesktops(long num);
 134
 135 public:
 136 #ifndef SWIG
 137   //! Constructs a new Screen object
 138   Screen(int screen);
 139   //! Destroys the Screen object
 140   virtual ~Screen();
 141 #endif
 142
 143   inline int number() const { return _number; }
 144
 145   //! Returns if the screen was successfully managed
 146   /*!
 147     If this is false, then the screen should be deleted and should NOT be
 148     used.
 149   */
 150   inline bool managed() const { return _managed; }
 151   //! Returns the Image Control used for rendering on the screen
 152   inline otk::ImageControl *imageControl() { return _image_control; }
 153   //! Returns the area of the screen not reserved by applications' Struts
 154   inline const otk::Rect &area() const { return _area; }
 155   //! Returns the style in use on the screen
 156   inline const otk::Style *style() const { return &_style; }
 157   //!  An offscreen window which gets focus when nothing else has it
 158   inline Window focuswindow() const { return _focuswindow; }
 159   //! Returns the desktop being displayed
 160   inline long desktop() const { return _desktop; }
 161   //! Returns the number of desktops
 162   inline long numDesktops() const { return _num_desktops; }
 163
 164   //! Update's the screen's combined strut of all the clients.
 165   /*!
 166     Clients should call this whenever they change their strut.
 167   */
 168   void updateStrut();
 169
 170   //! Manage any pre-existing windows on the screen
 171   void manageExisting();
 172   //! Manage a client window
 173   /*!
 174     This gives the window a frame, reparents it, selects events on it, etc.
 175   */
 176   void manageWindow(Window window);
 177   //! Unmanage a client
 178   /*!
 179     This removes the window's frame, reparents it to root, unselects events on
 180     it, etc.
 181     @param client The client to unmanage
 182   */
 183   void unmanageWindow(Client *client);
 184
 185   //! Raises a client window above all others in its stacking layer
 186   /*!
 187     raiseWindow has a couple of constraints that lowerWindow does not.<br>
 188     1) raiseWindow can be called after changing a Client's stack layer, and
 189        the list will be reorganized properly.<br>
 190     2) raiseWindow guarantees that XRestackWindows() will <i>always</i> be
 191        called for the specified client.
 192   */
 193   void raiseWindow(Client *client);
 194
 195   //! Lowers a client window below all others in its stacking layer
 196   void lowerWindow(Client *client);
 197
 198   //! Sets the name of a desktop by changing the root window property
 199   /*!
 200     @param i The index of the desktop to set the name for (starts at 0)
 201     @param name The name to set for the desktop
 202     If the index is too large, it is simply ignored.
 203   */
 204   void setDesktopName(long i, const otk::ustring &name);
 205
 206   virtual void propertyHandler(const XPropertyEvent &e);
 207   virtual void clientMessageHandler(const XClientMessageEvent &e);
 208   virtual void mapRequestHandler(const XMapRequestEvent &e);
 209 };
 210
 211 }
 212
 213 #endif// __screen_hh