Dogcows Code - chaz/openbox/blob - otk/display.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef   __display_hh
   3 #define   __display_hh
   4
   5 extern "C" {
   6 #include <X11/Xlib.h>
   7 }
   8
   9 namespace otk {
  10
  11 class ScreenInfo;
  12 class RenderControl;
  13
  14 class Display;
  15
  16 //! The display instance for the library
  17 extern Display *display;
  18
  19 //! Manages a single X11 display.
  20 class Display
  21 {
  22 private:
  23   //! The X display
  24   ::Display *_display;
  25
  26   //! Does the display have the XKB extension?
  27   bool _xkb;
  28   //! Base for events for the XKB extension
  29   int  _xkb_event_basep;
  30
  31   //! Does the display have the Shape extension?
  32   bool _shape;
  33   //! Base for events for the Shape extension
  34   int  _shape_event_basep;
  35
  36   //! Does the display have the Xinerama extension?
  37   bool _xinerama;
  38   //! Base for events for the Xinerama extension
  39   int  _xinerama_event_basep;
  40
  41   //! A list of all possible combinations of keyboard lock masks
  42   unsigned int _mask_list[8];
  43
  44   //! The value of the mask for the NumLock modifier
  45   unsigned int _num_lock_mask;
  46
  47   //! The value of the mask for the ScrollLock modifier
  48   unsigned int _scroll_lock_mask;
  49
  50   //! The key codes for the modifier keys
  51   XModifierKeymap *_modmap;
  52
  53   //! The number of requested grabs on the display
  54   int _grab_count;
  55
  56   //! A list of information for all screens on the display
  57   ScreenInfo** _screeninfo_list;
  58
  59   //! A list of RenderControl objects, which are used for all graphics on a
  60   //! screen
  61   RenderControl** _rendercontrol_list;
  62
  63   // Handles X errors on the display
  64   /*
  65     Displays the error if compiled for debugging.
  66   */
  67   //int xerrorHandler(::Display *d, XErrorEvent *e);
  68
  69 public:
  70   //! Initializes the class, opens the X display
  71   /*!
  72     The DISPLAY environment variable is used to choose the display.
  73     @see Display::display
  74   */
  75   Display();
  76   //! Destroys the class, closes the X display
  77   ~Display();
  78
  79   //! Gets information on a specific screen
  80   /*!
  81     Returns a ScreenInfo class, which contains information for a screen on the
  82     display.
  83     @param snum The screen number of the screen to retrieve info on
  84     @return Info on the requested screen, in a ScreenInfo class
  85   */
  86   const ScreenInfo* screenInfo(int snum) const;
  87
  88   //! Find a ScreenInfo based on a root window
  89   const ScreenInfo* findScreen(Window root) const;
  90
  91   //! Gets the RenderControl for a screen
  92   const RenderControl *renderControl(int snum) const;
  93
  94   //! Returns if the display has the xkb extension available
  95   inline bool xkb() const { return _xkb; }
  96   //! Returns the xkb extension's event base
  97   inline int xkbEventBase() const { return _xkb_event_basep; }
  98
  99   //! Returns if the display has the shape extension available
 100   inline bool shape() const { return _shape; }
 101   //! Returns the shape extension's event base
 102   inline int shapeEventBase() const { return _shape_event_basep; }
 103   //! Returns if the display has the xinerama extension available
 104   inline bool xinerama() const { return _xinerama; }
 105
 106   inline unsigned int numLockMask() const { return _num_lock_mask; }
 107   inline unsigned int scrollLockMask() const { return _scroll_lock_mask; }
 108   const XModifierKeymap *modifierMap() const { return _modmap; }
 109
 110   inline ::Display* operator*() const { return _display; }
 111
 112   //! Grabs the display
 113   void grab();
 114
 115   //! Ungrabs the display
 116   void ungrab();
 117
 118
 119
 120   /* TEMPORARY */
 121   void grabButton(unsigned int button, unsigned int modifiers,
 122                   Window grab_window, bool owner_events,
 123                   unsigned int event_mask, int pointer_mode,
 124                   int keyboard_mode, Window confine_to, Cursor cursor,
 125                   bool allow_scroll_lock) const;
 126   void ungrabButton(unsigned int button, unsigned int modifiers,
 127                     Window grab_window) const;
 128   void grabKey(unsigned int keycode, unsigned int modifiers,
 129                Window grab_window, bool owner_events,
 130                int pointer_mode, int keyboard_mode,
 131                bool allow_scroll_lock) const;
 132   void ungrabKey(unsigned int keycode, unsigned int modifiers,
 133                  Window grab_window) const;
 134 };
 135
 136 }
 137
 138 #endif // __display_hh