src/lib/ecore_fb/ecore_fb_ps2.c

   1 typedef struct _Ecore_Fb_Ps2_Event Ecore_Fb_Ps2_Event;
   2 struct _Ecore_Fb_Ps2_Event
   3 {
   4    unsigned char button;
   5    unsigned char x;
   6    unsigned char y;
   7    unsigned char z;
   8 };
   9
  10 static int _ecore_fb_ps2_event_byte_count = 0;
  11 static Ecore_Fb_Ps2_Event _ecore_fb_ps2_event;
  12 static int _ecore_fb_ps2_fd = 0;
  13 static int _ecore_fb_ps2_fd_handler(void *data, Ecore_Fd_Handler *fd_handler);
  14
  15 int
  16 ecore_fb_ps2_init(void)
  17 {
  18    _ecore_fb_ps2_fd = open("/dev/psaux", O_RDWR);
  19    if (_ecore_fb_ps2_fd >= 0)
  20      {
  21         prev_flags = fcntl(_ecore_fb_ps2_fd, F_GETFL);
  22         fcntl(_ecore_fb_ps2_fd, F_SETFL, prev_flags | O_NONBLOCK);
  23         _ecore_fb_ts_fd_handler_handle = ecore_main_fd_handler_add(_ecore_fb_ps2_fd,
  24                                                                         ECORE_FD_READ,
  25                                                                         _ecore_fb_ps2_fd_handler, NULL, NULL, NULL);
  26         if (!_ecore_fb_ts_fd_handler_handle)
  27          {
  28            close(_ecore_fb_ps2_fd);
  29            return 0;
  30          }
  31         return 1;
  32      }
  33   return 0;
  34 }
  35
  36 void
  37 ecore_fb_ps2_shutdown(void)
  38 {
  39    if (_ecore_fb_ps2_fd > 0) close(_ecore_fb_ps2_fd);
  40    _ecore_fb_ps2_fd = 0;
  41 }
  42
  43 static int
  44 _ecore_fb_ps2_fd_handler(void *data __UNUSED__, Ecore_Fd_Handler *fd_handler __UNUSED__)
  45 {
  46    static int prev_x = 0, prev_y = 0, prev_button = 0;
  47    static double last_time = 0;
  48    static double last_last_time = 0;
  49    int v = 0;
  50
  51    do
  52      {
  53         int x, y, button, i;
  54         int num;
  55         char *ptr;
  56         double t;
  57         int did_triple = 0;
  58
  59         ptr = (char *)&(_ecore_fb_ps2_event);
  60         ptr += _ecore_fb_ps2_event_byte_count;
  61         num = sizeof(Ecore_Fb_Ps2_Event) - _ecore_fb_ps2_event_byte_count;
  62         v = read(_ecore_fb_ps2_fd, ptr, num);
  63         if (v < 0) return 1;
  64         _ecore_fb_ps2_event_byte_count += v;
  65         if (v < num) return 1;
  66         t = ecore_time_get();
  67         _ecore_fb_ps2_event_byte_count = 0;
  68         if (_ecore_fb_ps2_event.button & 0x10)
  69           x = prev_x + (0xffffff00 | _ecore_fb_ps2_event.x);
  70         else
  71           x = prev_x + _ecore_fb_ps2_event.x;
  72         if (_ecore_fb_ps2_event.button & 0x20)
  73           y = prev_y - (0xffffff00 | _ecore_fb_ps2_event.y);
  74         else
  75           y = prev_y - _ecore_fb_ps2_event.y;
  76         button = _ecore_fb_ps2_event.button & 0x7;
  77         if (x < 0) x = 0;
  78         if (y < 0) y = 0;
  79         if (x >= _ecore_fb_console_w) x = _ecore_fb_console_w - 1;
  80         if (y >= _ecore_fb_console_h) y = _ecore_fb_console_h - 1;
  81         /* add event to queue */
  82         /* always add a move event */
  83         if (1)
  84           {
  85              /* MOVE: mouse is down and was */
  86              Ecore_Fb_Event_Mouse_Move *e;
  87
  88              e = calloc(1, sizeof(Ecore_Fb_Event_Mouse_Move));
  89              if (!e) goto retry;
  90              e->x = x;
  91              e->y = y;
  92              ecore_event_add(ECORE_FB_EVENT_MOUSE_MOVE, e, NULL, NULL);
  93           }
  94         for (i = 1; i <= 3; i++)
  95           {
  96              int mask;
  97
  98              mask = 1 << (i - 1);
  99              if (((button & mask)) && (!(prev_button & mask)))
 100                {
 101                   /* DOWN: mouse is down, but was not now */
 102                   Ecore_Fb_Event_Mouse_Button_Down *e;
 103
 104                   e = calloc(1, sizeof(Ecore_Fb_Event_Mouse_Button_Down));
 105                   if (!e) goto retry;
 106                   e->x = x;
 107                   e->y = y;
 108                   e->button = 1;
 109                   if ((t - last_time) <= _ecore_fb_double_click_time)
 110                     e->double_click = 1;
 111                   if ((t - last_last_time) <= (2 * _ecore_fb_double_click_time))
 112                     {
 113                        did_triple = 1;
 114                        e->triple_click = 1;
 115                     }
 116                   ecore_event_add(ECORE_FB_EVENT_MOUSE_BUTTON_DOWN, e, NULL, NULL);
 117                }
 118              else if ((!(button & mask)) && ((prev_button & mask)))
 119                {
 120                   /* UP: mouse was down, but is not now */
 121                   Ecore_Fb_Event_Mouse_Button_Up *e;
 122
 123                   e = calloc(1, sizeof(Ecore_Fb_Event_Mouse_Button_Up));
 124                   if (!e) goto retry;
 125                   e->x = x;
 126                   e->y = y;
 127                   e->button = 1;
 128                   ecore_event_add(ECORE_FB_EVENT_MOUSE_BUTTON_UP, e, NULL, NULL);
 129                }
 130           }
 131         if (did_triple)
 132           {
 133              last_time = 0;
 134              last_last_time = 0;
 135           }
 136         else
 137           {
 138              last_last_time = last_time;
 139              last_time = t;
 140           }
 141         retry:
 142         prev_x = x;
 143         prev_y = y;
 144         prev_button = button;
 145      }
 146    while (v > 0);
 147    return 1;
 148 }
 149 /**
 150  * @defgroup Ecore_FB_Click_Group Framebuffer Double Click Functions
 151  *
 152  * Functions that deal with the double click time of the framebuffer.
 153  */
 154
 155 /**
 156  * Sets the timeout for a double and triple clicks to be flagged.
 157  *
 158  * This sets the time between clicks before the double_click flag is
 159  * set in a button down event. If 3 clicks occur within double this
 160  * time, the triple_click flag is also set.
 161  *
 162  * @param   t The time in seconds
 163  * @ingroup Ecore_FB_Click_Group
 164  */
 165 EAPI void
 166 ecore_fb_double_click_time_set(double t)
 167 {
 168    if (t < 0.0) t = 0.0;
 169    _ecore_fb_double_click_time = t;
 170 }
 171
 172 /**
 173  * Retrieves the double and triple click flag timeout.
 174  *
 175  * See @ref ecore_x_double_click_time_set for more information.
 176  *
 177  * @return  The timeout for double clicks in seconds.
 178  * @ingroup Ecore_FB_Click_Group
 179  */
 180 EAPI double
 181 ecore_fb_double_click_time_get(void)
 182 {
 183    return _ecore_fb_double_click_time;
 184 }
 185