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

   1 // -*- mode: C++; indent-tabs-mode: nil; -*-
   2 #ifndef   __display_hh
   3 #define   __display_hh
   4
   5 extern "C" {
   6 #include <X11/Xlib.h>
   7 }
   8
   9 #include <vector>
  10
  11 namespace otk {
  12
  13 class ScreenInfo;
  14 class BGCCache;
  15
  16 //! Manages a single X11 display.
  17 /*!
  18   This class is static, and cannot be instantiated.
  19   Use the initialize() method to open the display and ready it for use.
  20   Use the destroy() method to close it and clean up the class' data.
  21 */
  22 class OBDisplay
  23 {
  24 public:
  25   //! The X display
  26   static Display *display;
  27
  28   //! A List of ScreenInfo instances
  29   typedef std::vector<ScreenInfo> ScreenInfoList;
  30
  31 private:
  32   //! Does the display have the Shape extention?
  33   static bool _shape;
  34   //! Base for events for the Shape extention
  35   static int  _shape_event_basep;
  36
  37   //! Does the display have the Xinerama extention?
  38   static bool _xinerama;
  39   //! Base for events for the Xinerama extention
  40   static int  _xinerama_event_basep;
  41
  42   //! A list of all possible combinations of keyboard lock masks
  43   static unsigned int _mask_list[8];
  44
  45   //! The number of requested grabs on the display
  46   static int _grab_count;
  47
  48   //! A list of information for all screens on the display
  49   static ScreenInfoList _screenInfoList;
  50
  51   //! A cache for re-using GCs, used by the drawing objects
  52   /*!
  53     @see BPen
  54     @see BFont
  55     @see BImage
  56     @see BImageControl
  57     @see BTexture
  58   */
  59   static BGCCache *_gccache;
  60
  61   //! Handles X errors on the display
  62   /*!
  63     Displays the error if compiled for debugging.
  64   */
  65   static int xerrorHandler(Display *d, XErrorEvent *e);
  66
  67   //! Prevents instantiation of the class
  68   OBDisplay();
  69
  70 public:
  71   //! Initializes the class, opens the X display
  72   /*!
  73     @see OBDisplay::display
  74     @param name The name of the X display to open. If it is null, the DISPLAY
  75                 environment variable is used instead.
  76   */
  77   static void initialize(char *name);
  78   //! Destroys the class, closes the X display
  79   static void destroy();
  80
  81   //! Returns the GC cache for the application
  82   inline static BGCCache *gcCache() { return _gccache; }
  83
  84   //! Gets information on a specific screen
  85   /*!
  86     Returns a ScreenInfo class, which contains information for a screen on the
  87     display.
  88     @param snum The screen number of the screen to retrieve info on
  89     @return Info on the requested screen, in a ScreenInfo class
  90   */
  91   static const ScreenInfo* screenInfo(int snum);
  92
  93   //! Returns if the display has the shape extention available
  94   inline static bool shape() { return _shape; }
  95   //! Returns the shape extension's event base
  96   inline static int shapeEventBase() { return _shape_event_basep; }
  97   //! Returns if the display has the xinerama extention available
  98   inline static bool xinerama() { return _xinerama; }
  99
 100   //! Grabs the display
 101   static void grab();
 102
 103   //! Ungrabs the display
 104   static void ungrab();
 105
 106
 107
 108   /* TEMPORARY */
 109   static void grabButton(unsigned int button, unsigned int modifiers,
 110                   Window grab_window, bool owner_events,
 111                   unsigned int event_mask, int pointer_mode,
 112                   int keyboard_mode, Window confine_to, Cursor cursor,
 113                   bool allow_scroll_lock);
 114   static void ungrabButton(unsigned int button, unsigned int modifiers,
 115                     Window grab_window);
 116 };
 117
 118 }
 119
 120 #endif // __display_hh