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 number of requested grabs on the display
  51   int _grab_count;
  52
  53   //! A list of information for all screens on the display
  54   ScreenInfo** _screeninfo_list;
  55
  56   //! A list of RenderControl objects, which are used for all graphics on a
  57   //! screen
  58   RenderControl** _rendercontrol_list;
  59
  60   // Handles X errors on the display
  61   /*
  62     Displays the error if compiled for debugging.
  63   */
  64   //int xerrorHandler(::Display *d, XErrorEvent *e);
  65
  66 public:
  67   //! Initializes the class, opens the X display
  68   /*!
  69     The DISPLAY environment variable is used to choose the display.
  70     @see Display::display
  71   */
  72   Display();
  73   //! Destroys the class, closes the X display
  74   ~Display();
  75
  76   //! Gets information on a specific screen
  77   /*!
  78     Returns a ScreenInfo class, which contains information for a screen on the
  79     display.
  80     @param snum The screen number of the screen to retrieve info on
  81     @return Info on the requested screen, in a ScreenInfo class
  82   */
  83   const ScreenInfo* screenInfo(int snum) const;
  84
  85   //! Find a ScreenInfo based on a root window
  86   const ScreenInfo* findScreen(Window root) const;
  87
  88   //! Gets the RenderControl for a screen
  89   const RenderControl *renderControl(int snum) const;
  90
  91   //! Returns if the display has the xkb extension available
  92   inline bool xkb() const { return _xkb; }
  93   //! Returns the xkb extension's event base
  94   inline int xkbEventBase() const { return _xkb_event_basep; }
  95
  96   //! Returns if the display has the shape extension available
  97   inline bool shape() const { return _shape; }
  98   //! Returns the shape extension's event base
  99   inline int shapeEventBase() const { return _shape_event_basep; }
 100   //! Returns if the display has the xinerama extension available
 101   inline bool xinerama() const { return _xinerama; }
 102
 103   inline unsigned int numLockMask() const { return _num_lock_mask; }
 104   inline unsigned int scrollLockMask() const { return _scroll_lock_mask; }
 105
 106   inline ::Display* operator*() const { return _display; }
 107
 108   //! Grabs the display
 109   void grab();
 110
 111   //! Ungrabs the display
 112   void ungrab();
 113
 114
 115
 116   /* TEMPORARY */
 117   void grabButton(unsigned int button, unsigned int modifiers,
 118                   Window grab_window, bool owner_events,
 119                   unsigned int event_mask, int pointer_mode,
 120                   int keyboard_mode, Window confine_to, Cursor cursor,
 121                   bool allow_scroll_lock) const;
 122   void ungrabButton(unsigned int button, unsigned int modifiers,
 123                     Window grab_window) const;
 124   void grabKey(unsigned int keycode, unsigned int modifiers,
 125                Window grab_window, bool owner_events,
 126                int pointer_mode, int keyboard_mode,
 127                bool allow_scroll_lock) const;
 128   void ungrabKey(unsigned int keycode, unsigned int modifiers,
 129                  Window grab_window) const;
 130 };
 131
 132 }
 133
 134 #endif // __display_hh