wearable/src/lib/ecore_fb/ecore_fb_ts.c

   1 #ifdef HAVE_CONFIG_H
   2 # include <config.h>
   3 #endif
   4
   5 #ifdef HAVE_TSLIB
   6 # include <tslib.h>
   7 # include <errno.h>
   8 #endif
   9
  10 #include "Ecore_Fb.h"
  11 #include "ecore_fb_private.h"
  12
  13 typedef struct _Ecore_Fb_Ts_Event Ecore_Fb_Ts_Event;
  14 typedef struct _Ecore_Fb_Ts_Calibrate Ecore_Fb_Ts_Calibrate;
  15 typedef struct _Ecore_Fb_Ts_Backlight Ecore_Fb_Ts_Backlight;
  16 typedef struct _Ecore_Fb_Ts_Contrast Ecore_Fb_Ts_Contrast;
  17 typedef struct _Ecore_Fb_Ts_Led Ecore_Fb_Ts_Led;
  18 typedef struct _Ecore_Fb_Ts_Flite Ecore_Fb_Ts_Flite;
  19
  20 struct _Ecore_Fb_Ts_Event
  21 {
  22    unsigned short pressure;
  23    unsigned short x;
  24    unsigned short y;
  25    unsigned short _unused;
  26 };
  27
  28 struct _Ecore_Fb_Ts_Calibrate
  29 {
  30    int xscale;
  31    int xtrans;
  32    int yscale;
  33    int ytrans;
  34    int xyswap;
  35 };
  36
  37 struct _Ecore_Fb_Ts_Backlight
  38 {
  39    int           on;
  40    unsigned char brightness;
  41 };
  42
  43 struct _Ecore_Fb_Ts_Contrast
  44 {
  45    unsigned char contrast;
  46 };
  47
  48 struct _Ecore_Fb_Ts_Led
  49 {
  50    unsigned char on;
  51    unsigned char blink_time;
  52    unsigned char on_time;
  53    unsigned char off_time;
  54 };
  55
  56 struct _Ecore_Fb_Ts_Flite
  57 {
  58    unsigned char mode;
  59    unsigned char pwr;
  60    unsigned char brightness;
  61 };
  62
  63 static Eina_Bool _ecore_fb_ts_fd_handler(void *data, Ecore_Fd_Handler *fd_handler);
  64 static int _ecore_fb_ts_fd = -1;
  65 static int _ecore_fb_ts_event_byte_count = 0;
  66 static int _ecore_fb_ts_apply_cal = 0;
  67 static Ecore_Fb_Ts_Event _ecore_fb_ts_event;
  68 static Ecore_Fb_Ts_Calibrate _ecore_fb_ts_cal = {1,1,0,0,0};
  69 static Ecore_Fd_Handler *_ecore_fb_ts_fd_handler_handle = NULL;
  70
  71 #ifdef HAVE_TSLIB
  72 struct tsdev *_ecore_fb_tslib_tsdev = NULL;
  73 struct ts_sample _ecore_fb_tslib_event;
  74 #endif
  75
  76 static double _ecore_fb_double_click_time = 0.25;
  77 static void *_ecore_fb_ts_event_window = NULL;
  78
  79 EAPI int
  80 ecore_fb_ts_init(void)
  81 {
  82 #ifdef HAVE_TSLIB
  83    char *tslib_tsdevice = NULL;
  84    if ( (tslib_tsdevice = getenv("TSLIB_TSDEVICE")) )
  85      {
  86         printf( "ECORE_FB: TSLIB_TSDEVICE = '%s'\n", tslib_tsdevice );
  87         _ecore_fb_tslib_tsdev = ts_open( tslib_tsdevice, 1 ); /* 1 = nonblocking, 0 = blocking */
  88
  89         if ( !_ecore_fb_tslib_tsdev )
  90           {
  91              printf( "ECORE_FB: Can't ts_open (%s)\n", strerror( errno ) );
  92              return 0;
  93           }
  94
  95         if ( ts_config( _ecore_fb_tslib_tsdev ) )
  96           {
  97              printf( "ECORE_FB: Can't ts_config (%s)\n", strerror( errno ) );
  98              return 0;
  99           }
 100         _ecore_fb_ts_fd = ts_fd( _ecore_fb_tslib_tsdev );
 101         if ( _ecore_fb_ts_fd < 0 )
 102           {
 103              printf( "ECORE_FB: Can't open touchscreen (%s)\n", strerror( errno ) );
 104              return 0;
 105           }
 106      }
 107 #else
 108    _ecore_fb_ts_fd = open("/dev/touchscreen/0", O_RDONLY);
 109 #endif
 110    if (_ecore_fb_ts_fd >= 0)
 111      {
 112         _ecore_fb_ts_fd_handler_handle = ecore_main_fd_handler_add(_ecore_fb_ts_fd,
 113                                                                    ECORE_FD_READ,
 114                                                                    _ecore_fb_ts_fd_handler, NULL,
 115                                                                    NULL, NULL);
 116         if (!_ecore_fb_ts_fd_handler_handle)
 117           {
 118              close(_ecore_fb_ts_fd);
 119              return 0;
 120           }
 121         // FIXME _ecore_fb_kbd_fd = open("/dev/touchscreen/key", O_RDONLY);
 122         return 1;
 123      }
 124    return 0;
 125 }
 126
 127 EAPI void
 128 ecore_fb_ts_shutdown(void)
 129 {
 130    if (_ecore_fb_ts_fd_handler_handle)
 131       ecore_main_fd_handler_del(_ecore_fb_ts_fd_handler_handle);
 132    if (_ecore_fb_ts_fd >= 0) close(_ecore_fb_ts_fd);
 133    _ecore_fb_ts_fd = -1;
 134    _ecore_fb_ts_fd_handler_handle = NULL;
 135    _ecore_fb_ts_event_window = NULL;
 136 }
 137
 138 EAPI void
 139 ecore_fb_ts_event_window_set(void *window)
 140 {
 141    _ecore_fb_ts_event_window = window;
 142 }
 143
 144 EAPI void *
 145 ecore_fb_ts_event_window_get(void)
 146 {
 147     return _ecore_fb_ts_event_window;
 148 }
 149
 150 /**
 151  * @defgroup Ecore_FB_Calibrate_Group Framebuffer Calibration Functions
 152  *
 153  * Functions that calibrate the screen.
 154  */
 155
 156
 157 /**
 158  * Calibrates the touschreen using the given parameters.
 159  * @param   xscale X scaling, where 256 = 1.0
 160  * @param   xtrans X translation.
 161  * @param   yscale Y scaling.
 162  * @param   ytrans Y translation.
 163  * @param   xyswap Swap X & Y flag.
 164  * @ingroup Ecore_FB_Calibrate_Group
 165  */
 166 EAPI void
 167 ecore_fb_touch_screen_calibrate_set(int xscale, int xtrans, int yscale, int ytrans, int xyswap)
 168 {
 169    Ecore_Fb_Ts_Calibrate cal;
 170
 171    if (_ecore_fb_ts_fd < 0) return;
 172    cal.xscale = xscale;
 173    cal.xtrans = xtrans;
 174    cal.yscale = yscale;
 175    cal.ytrans = ytrans;
 176    cal.xyswap = xyswap;
 177    if (ioctl(_ecore_fb_ts_fd, TS_SET_CAL, (void *)&cal))
 178      {
 179         _ecore_fb_ts_cal = cal;
 180         _ecore_fb_ts_apply_cal = 1;
 181      }
 182 }
 183
 184 /**
 185  * Retrieves the calibration parameters of the touchscreen.
 186  * @param   xscale Pointer to an integer in which to store the X scaling.
 187  *                 Note that 256 = 1.0.
 188  * @param   xtrans Pointer to an integer in which to store the X translation.
 189  * @param   yscale Pointer to an integer in which to store the Y scaling.
 190  * @param   ytrans Pointer to an integer in which to store the Y translation.
 191  * @param   xyswap Pointer to an integer in which to store the Swap X & Y flag.
 192  * @ingroup Ecore_FB_Calibrate_Group
 193  */
 194 EAPI void
 195 ecore_fb_touch_screen_calibrate_get(int *xscale, int *xtrans, int *yscale, int *ytrans, int *xyswap)
 196 {
 197    Ecore_Fb_Ts_Calibrate cal;
 198
 199    if (_ecore_fb_ts_fd < 0) return;
 200    if (!_ecore_fb_ts_apply_cal)
 201      {
 202         if (ioctl(_ecore_fb_ts_fd, TS_GET_CAL, (void *)&cal))
 203            _ecore_fb_ts_cal = cal;
 204      }
 205    else
 206       cal = _ecore_fb_ts_cal;
 207    if (xscale) *xscale = cal.xscale;
 208    if (xtrans) *xtrans = cal.xtrans;
 209    if (yscale) *yscale = cal.yscale;
 210    if (ytrans) *ytrans = cal.ytrans;
 211    if (xyswap) *xyswap = cal.xyswap;
 212 }
 213
 214 static Eina_Bool
 215 _ecore_fb_ts_fd_handler(void *data __UNUSED__, Ecore_Fd_Handler *fd_handler __UNUSED__)
 216 {
 217    static int prev_x = 0, prev_y = 0, prev_pressure = 0;
 218    static double last_time = 0;
 219    static double last_last_time = 0;
 220    int v = 0;
 221
 222    do
 223      {
 224         int x, y, pressure;
 225         int num;
 226         char *ptr;
 227         double t = 0.0;
 228         static int did_double = 0;
 229         static int did_triple = 0;
 230
 231 #ifdef HAVE_TSLIB
 232         if (_ecore_fb_ts_apply_cal)
 233            num = ts_read_raw(_ecore_fb_tslib_tsdev, &_ecore_fb_tslib_event, 1);
 234         else
 235            num = ts_read(_ecore_fb_tslib_tsdev, &_ecore_fb_tslib_event, 1);
 236         if (num != 1) return 1; /* no more samples at this time */
 237         x = _ecore_fb_tslib_event.x;
 238         y = _ecore_fb_tslib_event.y;
 239         pressure = _ecore_fb_tslib_event.pressure;
 240         v = 1; /* loop, there might be more samples */
 241 #else
 242         ptr = (char *)&(_ecore_fb_ts_event);
 243         ptr += _ecore_fb_ts_event_byte_count;
 244         num = sizeof(Ecore_Fb_Ts_Event) - _ecore_fb_ts_event_byte_count;
 245         v = read(_ecore_fb_ts_fd, ptr, num);
 246         if (v < 0) return 1;
 247         _ecore_fb_ts_event_byte_count += v;
 248         if (v < num) return 1;
 249         _ecore_fb_ts_event_byte_count = 0;
 250         if (_ecore_fb_ts_apply_cal)
 251           {
 252              x = ((_ecore_fb_ts_cal.xscale * _ecore_fb_ts_event.x) >> 8) + _ecore_fb_ts_cal.xtrans;
 253              y = ((_ecore_fb_ts_cal.yscale * _ecore_fb_ts_event.y) >> 8) + _ecore_fb_ts_cal.ytrans;
 254           }
 255         else
 256           {
 257              x = _ecore_fb_ts_event.x;
 258              y = _ecore_fb_ts_event.y;
 259           }
 260         pressure = _ecore_fb_ts_event.pressure;
 261 #endif
 262         t = ecore_loop_time_get();
 263         /* add event to queue */
 264         /* always add a move event */
 265         if ((pressure) || (prev_pressure))
 266           {
 267              /* MOVE: mouse is down and was */
 268              Ecore_Event_Mouse_Move *e;
 269
 270              e = calloc(1, sizeof(Ecore_Event_Mouse_Move));
 271              if (!e) goto retry;
 272              e->x = x;
 273              e->y = y;
 274              e->root.x = e->x;
 275              e->root.y = e->y;
 276              e->window = 1;
 277              e->event_window = e->window;
 278              e->root_window = e->window;
 279              e->same_screen = 1;
 280              e->timestamp = ecore_loop_time_get() * 1000.0;
 281              ecore_event_add(ECORE_EVENT_MOUSE_MOVE, e, NULL, NULL);
 282           }
 283         if ((pressure) && (!prev_pressure))
 284           {
 285              /* DOWN: mouse is down, but was not now */
 286              Ecore_Event_Mouse_Button *e;
 287
 288              e = calloc(1, sizeof(Ecore_Event_Mouse_Button));
 289              if (!e) goto retry;
 290              e->x = x;
 291              e->y = y;
 292              e->root.x = e->x;
 293              e->root.y = e->y;
 294              e->buttons = 1;
 295              if ((t - last_time) <= _ecore_fb_double_click_time)
 296                {
 297                   e->double_click = 1;
 298                   did_double = 1;
 299                }
 300              else
 301                {
 302                   did_double = 0;
 303                   did_triple = 0;
 304                }
 305              if ((t - last_last_time) <= (2 * _ecore_fb_double_click_time))
 306                {
 307                   did_triple = 1;
 308                   e->triple_click = 1;
 309                }
 310              else
 311                {
 312                   did_triple = 0;
 313                }
 314              e->window = 1;
 315              e->event_window = e->window;
 316              e->root_window = e->window;
 317              e->same_screen = 1;
 318              e->timestamp = ecore_loop_time_get() * 1000.0;
 319              ecore_event_add(ECORE_EVENT_MOUSE_BUTTON_DOWN, e, NULL, NULL);
 320           }
 321         else if ((!pressure) && (prev_pressure))
 322           {
 323              /* UP: mouse was down, but is not now */
 324              Ecore_Event_Mouse_Button *e;
 325
 326              e = calloc(1, sizeof(Ecore_Event_Mouse_Button));
 327              if (!e) goto retry;
 328              e->x = prev_x;
 329              e->y = prev_y;
 330              e->root.x = e->x;
 331              e->root.y = e->y;
 332              e->buttons = 1;
 333              if (did_double)
 334                 e->double_click = 1;
 335              if (did_triple)
 336                 e->triple_click = 1;
 337              e->window = 1;
 338              e->event_window = e->window;
 339              e->root_window = e->window;
 340              e->same_screen = 1;
 341              e->timestamp = ecore_loop_time_get() * 1000.0;
 342              ecore_event_add(ECORE_EVENT_MOUSE_BUTTON_UP, e, NULL, NULL);
 343           }
 344         if (did_triple)
 345           {
 346              last_time = 0;
 347              last_last_time = 0;
 348           }
 349         else
 350           {
 351              last_last_time = last_time;
 352              last_time = t;
 353           }
 354 retry:
 355         prev_x = x;
 356         prev_y = y;
 357         prev_pressure = pressure;
 358      }
 359    while (v > 0);
 360    return 1;
 361 }
 362