src/lib/ecore_fb/ecore_fb.c

   1 #include "Ecore_Fb.h"
   2 #include "ecore_fb_private.h"
   3
   4 static void _ecore_fb_size_get(int *w, int *h);
   5
   6 EAPI int ECORE_FB_EVENT_KEY_DOWN = 0;
   7 EAPI int ECORE_FB_EVENT_KEY_UP = 0;
   8 EAPI int ECORE_FB_EVENT_MOUSE_BUTTON_DOWN = 0;
   9 EAPI int ECORE_FB_EVENT_MOUSE_BUTTON_UP = 0;
  10 EAPI int ECORE_FB_EVENT_MOUSE_MOVE = 0;
  11 EAPI int ECORE_FB_EVENT_MOUSE_WHEEL = 0;
  12
  13 static int _ecore_fb_init_count = 0;
  14 static int _ecore_fb_console_w = 0;
  15 static int _ecore_fb_console_h = 0;
  16
  17 static double _ecore_fb_double_click_time = 0.25;
  18
  19
  20 /**
  21  * @defgroup Ecore_FB_Library_Group Framebuffer Library Functions
  22  *
  23  * Functions used to set up and shut down the Ecore_Framebuffer functions.
  24  */
  25
  26 /**
  27  * Sets up the Ecore_Fb library.
  28  * @param   name device target name
  29  * @return  @c 0 on failure.  Otherwise, the number of times the library has
  30  *          been initialised without being shut down.
  31  * @ingroup Ecore_FB_Library_Group
  32  */
  33 EAPI int
  34 ecore_fb_init(const char *name __UNUSED__)
  35 {
  36         if(!_ecore_fb_init_count)
  37         {
  38                 if(!ecore_fb_vt_init()) return 0;
  39                 ECORE_FB_EVENT_KEY_DOWN          = ecore_event_type_new();
  40                 ECORE_FB_EVENT_KEY_UP            = ecore_event_type_new();
  41                 ECORE_FB_EVENT_MOUSE_BUTTON_DOWN = ecore_event_type_new();
  42                 ECORE_FB_EVENT_MOUSE_BUTTON_UP   = ecore_event_type_new();
  43                 ECORE_FB_EVENT_MOUSE_MOVE        = ecore_event_type_new();
  44                 ECORE_FB_EVENT_MOUSE_WHEEL       = ecore_event_type_new();
  45                 _ecore_fb_size_get(&_ecore_fb_console_w, &_ecore_fb_console_h);
  46         }
  47         return ++_ecore_fb_init_count;
  48 }
  49
  50 /**
  51  * Shuts down the Ecore_Fb library.
  52  * @return  @c The number of times the system has been initialised without
  53  *             being shut down.
  54  * @ingroup Ecore_FB_Library_Group
  55  */
  56 EAPI int
  57 ecore_fb_shutdown(void)
  58 {
  59         _ecore_fb_init_count--;
  60         if(!_ecore_fb_init_count)
  61         {
  62                 ecore_fb_vt_shutdown();
  63                 return 0;
  64         }
  65         return _ecore_fb_init_count;
  66 }
  67
  68
  69 /**
  70  * Retrieves the width and height of the current frame buffer in pixels.
  71  * @param w Pointer to an integer in which to store the width.
  72  * @param h Pointer to an interge in which to store the height.
  73  */
  74 EAPI void
  75 ecore_fb_size_get(int *w, int *h)
  76 {
  77    if (w) *w = _ecore_fb_console_w;
  78    if (h) *h = _ecore_fb_console_h;
  79 }
  80
  81 static void
  82 _ecore_fb_size_get(int *w, int *h)
  83 {
  84    struct fb_var_screeninfo fb_var;
  85    int fb;
  86
  87    fb = open("/dev/fb0", O_RDWR);
  88    if (fb < 0)
  89      {
  90         if (w) *w = 0;
  91         if (h) *h = 0;
  92         return;
  93      }
  94    if (ioctl(fb, FBIOGET_VSCREENINFO, &fb_var) == -1)
  95      {
  96         if (w) *w = 0;
  97         if (h) *h = 0;
  98         return;
  99      }
 100    close(fb);
 101    if (w) *w = fb_var.xres;
 102    if (h) *h = fb_var.yres;
 103 }