src/lib/els_scroller.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 #define SMART_NAME "els_scroller"
   5 #define API_ENTRY Smart_Data *sd; sd = evas_object_smart_data_get(obj); if ((!obj) || (!sd) || (evas_object_type_get(obj) && strcmp(evas_object_type_get(obj), SMART_NAME)))
   6 #define INTERNAL_ENTRY Smart_Data *sd; sd = evas_object_smart_data_get(obj); if (!sd) return;
   7 typedef struct _Smart_Data Smart_Data;
   8
   9 #define EVTIME 1
  10 //#define SCROLLDBG 1
  11
  12 struct _Smart_Data
  13 {
  14    Evas_Coord   x, y, w, h;
  15    Evas_Coord   wx, wy, ww, wh; /* Last "wanted" geometry */
  16
  17    Evas_Object *smart_obj;
  18    Evas_Object *child_obj;
  19    Evas_Object *pan_obj;
  20    Evas_Object *edje_obj;
  21    Evas_Object *event_obj;
  22
  23    Evas_Object *widget;
  24
  25    Elm_Smart_Scroller_Policy hbar_flags, vbar_flags;
  26
  27    struct {
  28         Evas_Coord x, y;
  29         Evas_Coord sx, sy;
  30         Evas_Coord dx, dy;
  31         Evas_Coord pdx, pdy;
  32         Evas_Coord bx, by;
  33         Evas_Coord ax, ay;
  34         Evas_Coord bx0, by0;
  35         Evas_Coord b0x, b0y;
  36         Evas_Coord b2x, b2y;
  37         struct {
  38              Evas_Coord    x, y;
  39              double        timestamp;
  40         } history[20];
  41       double anim_start;
  42       double anim_start2;
  43       double anim_start3;
  44       double onhold_vx, onhold_vy, onhold_tlast, onhold_vxe, onhold_vye;
  45       double extra_time;
  46       Evas_Coord hold_x, hold_y;
  47       Ecore_Animator *hold_animator;
  48       Ecore_Animator *onhold_animator;
  49       Ecore_Animator *momentum_animator;
  50       Ecore_Animator *bounce_x_animator;
  51       Ecore_Animator *bounce_y_animator;
  52       Evas_Coord locked_x, locked_y;
  53       int hdir, vdir;
  54       unsigned char now : 1;
  55       unsigned char cancelled : 1;
  56       unsigned char hold : 1;
  57       unsigned char hold_parent : 1;
  58       unsigned char want_dragged : 1;
  59       unsigned char dragged : 1;
  60       unsigned char dragged_began : 1;
  61       unsigned char dir_x : 1;
  62       unsigned char dir_y : 1;
  63       unsigned char locked : 1;
  64       unsigned char bounce_x_hold : 1;
  65       unsigned char bounce_y_hold : 1;
  66       unsigned char scroll : 1;
  67       unsigned char want_reset : 1;
  68    } down;
  69
  70    struct {
  71       Evas_Coord w, h;
  72    } child;
  73    struct {
  74       Evas_Coord x, y;
  75    } step, page;
  76
  77    struct {
  78       void (*set) (Evas_Object *obj, Evas_Coord x, Evas_Coord y);
  79       void (*get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y);
  80       void (*max_get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y);
  81       void (*min_get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y);
  82       void (*child_size_get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y);
  83    } pan_func;
  84
  85    struct {
  86       struct {
  87          Evas_Coord start, end;
  88          double t_start, t_end;
  89          Ecore_Animator *animator;
  90       } x, y;
  91    } scrollto;
  92
  93    double pagerel_h, pagerel_v;
  94    Evas_Coord pagesize_h, pagesize_v;
  95
  96    unsigned char hbar_visible : 1;
  97    unsigned char vbar_visible : 1;
  98    unsigned char extern_pan : 1;
  99    unsigned char one_dir_at_a_time : 1;
 100    unsigned char hold : 1;
 101    unsigned char freeze : 1;
 102    unsigned char bouncemex : 1;
 103    unsigned char bouncemey : 1;
 104    unsigned char bounce_horiz : 1;
 105    unsigned char bounce_vert : 1;
 106    unsigned char momentum_animator_disabled :1;
 107    unsigned char bounce_animator_disabled :1;
 108    Eina_Bool is_mirrored : 1;
 109    unsigned char event_propagation :1;
 110    Eina_Bool wheel_disabled : 1;
 111 };
 112
 113 /* local subsystem functions */
 114 static void _smart_child_del_hook(void *data, Evas *e, Evas_Object *obj, void *event_info);
 115 static void _smart_pan_changed_hook(void *data, Evas_Object *obj, void *event_info);
 116 static void _smart_pan_pan_changed_hook(void *data, Evas_Object *obj, void *event_info);
 117 static void _smart_event_wheel(void *data, Evas *e, Evas_Object *obj, void *event_info);
 118 static void _smart_event_mouse_down(void *data, Evas *e, Evas_Object *obj, void *event_info);
 119 static Eina_Bool  _smart_hold_animator(void *data);
 120 static Eina_Bool  _smart_momentum_animator(void *data);
 121 static void _smart_event_mouse_up(void *data, Evas *e, Evas_Object *obj, void *event_info);
 122 static Eina_Bool  _smart_onhold_animator(void *data);
 123 static void _smart_event_mouse_move(void *data, Evas *e, Evas_Object *obj, void *event_info);
 124 static void _smart_edje_drag_v_start(void *data, Evas_Object *obj, const char *emission, const char *source);
 125 static void _smart_edje_drag_v_stop(void *data, Evas_Object *obj, const char *emission, const char *source);
 126 static void _smart_edje_drag_v(void *data, Evas_Object *obj, const char *emission, const char *source);
 127 static void _smart_edje_drag_h_start(void *data, Evas_Object *obj, const char *emission, const char *source);
 128 static void _smart_edje_drag_h_stop(void *data, Evas_Object *obj, const char *emission, const char *source);
 129 static void _smart_edje_drag_h(void *data, Evas_Object *obj, const char *emission, const char *source);
 130 static void _smart_scrollbar_read(Smart_Data *sd);
 131 static void _smart_scrollbar_reset(Smart_Data *sd);
 132 static int  _smart_scrollbar_bar_h_visibility_adjust(Smart_Data *sd);
 133 static int  _smart_scrollbar_bar_v_visibility_adjust(Smart_Data *sd);
 134 static void _smart_scrollbar_bar_visibility_adjust(Smart_Data *sd);
 135 static void _smart_scrollbar_size_adjust(Smart_Data *sd);
 136 static void _smart_reconfigure(Smart_Data *sd);
 137 static void _smart_add(Evas_Object *obj);
 138 static void _smart_del(Evas_Object *obj);
 139 static void _smart_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y);
 140 static void _smart_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h);
 141 static void _smart_show(Evas_Object *obj);
 142 static void _smart_hide(Evas_Object *obj);
 143 static void _smart_color_set(Evas_Object *obj, int r, int g, int b, int a);
 144 static void _smart_clip_set(Evas_Object *obj, Evas_Object *clip);
 145 static void _smart_clip_unset(Evas_Object *obj);
 146 static void _smart_init(void);
 147
 148 /* local subsystem globals */
 149 static Evas_Smart *_smart = NULL;
 150
 151 /* externally accessible functions */
 152 Evas_Object *
 153 elm_smart_scroller_add(Evas *evas)
 154 {
 155    _smart_init();
 156    return evas_object_smart_add(evas, _smart);
 157 }
 158
 159 static Evas_Coord
 160 _elm_smart_scroller_x_mirrored_get(Evas_Object *obj, Evas_Coord x)
 161 {
 162    API_ENTRY return x;
 163
 164    Evas_Coord cw, ch, w, ret;
 165    elm_smart_scroller_child_viewport_size_get(obj, &w, NULL);
 166    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
 167    ret = (cw - (x + w));
 168    return (ret >= 0) ? ret : 0;
 169 }
 170
 171 void
 172 elm_smart_scroller_mirrored_set(Evas_Object *obj, Eina_Bool mirrored)
 173 {
 174    API_ENTRY return;
 175    Evas_Coord wx;
 176    if (sd->is_mirrored == mirrored)
 177      return;
 178
 179    sd->is_mirrored = mirrored;
 180    edje_object_mirrored_set(sd->edje_obj, mirrored);
 181
 182    if (sd->is_mirrored)
 183      wx = _elm_smart_scroller_x_mirrored_get(sd->smart_obj, sd->wx);
 184    else
 185      wx = sd->wx;
 186
 187    elm_smart_scroller_child_pos_set(sd->smart_obj, wx, sd->wy);
 188 }
 189
 190 void
 191 elm_smart_scroller_child_set(Evas_Object *obj, Evas_Object *child)
 192 {
 193    Evas_Coord w, h;
 194    Evas_Object *o;
 195
 196    API_ENTRY return;
 197    if (sd->child_obj)
 198      {
 199         _elm_smart_pan_child_set(sd->pan_obj, NULL);
 200         evas_object_event_callback_del_full(sd->child_obj, EVAS_CALLBACK_DEL, _smart_child_del_hook, sd);
 201      }
 202
 203    sd->child_obj = child;
 204    sd->wx = sd->wy = 0;
 205    /* (-1) means want viewports size */
 206    sd->ww = sd->wh = -1;
 207    if (!child) return;
 208
 209    if (!sd->pan_obj)
 210      {
 211         o = _elm_smart_pan_add(evas_object_evas_get(obj));
 212         sd->pan_obj = o;
 213         evas_object_smart_callback_add(o, "changed", _smart_pan_changed_hook, sd);
 214         evas_object_smart_callback_add(o, "pan_changed", _smart_pan_pan_changed_hook, sd);
 215         _elm_smart_pan_child_set(o, child);
 216         edje_object_part_swallow(sd->edje_obj, "elm.swallow.content", o);
 217      }
 218    else
 219      _elm_smart_pan_child_set(sd->pan_obj, child);
 220
 221    sd->pan_func.set = _elm_smart_pan_set;
 222    sd->pan_func.get = _elm_smart_pan_get;
 223    sd->pan_func.max_get = _elm_smart_pan_max_get;
 224    sd->pan_func.min_get = _elm_smart_pan_min_get;
 225    sd->pan_func.child_size_get = _elm_smart_pan_child_size_get;
 226
 227    evas_object_event_callback_add(child, EVAS_CALLBACK_DEL, _smart_child_del_hook, sd);
 228    sd->pan_func.child_size_get(sd->pan_obj, &w, &h);
 229    sd->child.w = w;
 230    sd->child.h = h;
 231    _smart_scrollbar_size_adjust(sd);
 232    _smart_scrollbar_reset(sd);
 233 }
 234
 235 void
 236 elm_smart_scroller_extern_pan_set(Evas_Object *obj, Evas_Object *pan,
 237                                   void (*pan_set) (Evas_Object *obj, Evas_Coord x, Evas_Coord y),
 238                                   void (*pan_get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y),
 239                                   void (*pan_max_get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y),
 240                                   void (*pan_min_get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y),
 241                                   void (*pan_child_size_get) (Evas_Object *obj, Evas_Coord *x, Evas_Coord *y))
 242 {
 243    API_ENTRY return;
 244
 245    elm_smart_scroller_child_set(obj, NULL);
 246
 247    if (sd->pan_obj)
 248      {
 249         evas_object_smart_callback_del(sd->pan_obj, "changed", _smart_pan_changed_hook);
 250         evas_object_smart_callback_del(sd->pan_obj, "pan_changed", _smart_pan_pan_changed_hook);
 251      }
 252
 253    if (sd->extern_pan)
 254      {
 255         if (sd->pan_obj)
 256           {
 257              edje_object_part_unswallow(sd->edje_obj, sd->pan_obj);
 258              sd->pan_obj = NULL;
 259           }
 260      }
 261    else
 262      {
 263         if (sd->pan_obj)
 264           {
 265              evas_object_del(sd->pan_obj);
 266              sd->pan_obj = NULL;
 267           }
 268      }
 269    if (!pan)
 270      {
 271         sd->extern_pan = 0;
 272         return;
 273      }
 274
 275    sd->pan_obj = pan;
 276    sd->pan_func.set = pan_set;
 277    sd->pan_func.get = pan_get;
 278    sd->pan_func.max_get = pan_max_get;
 279    sd->pan_func.min_get = pan_min_get;
 280    sd->pan_func.child_size_get = pan_child_size_get;
 281    sd->extern_pan = 1;
 282    evas_object_smart_callback_add(sd->pan_obj, "changed", _smart_pan_changed_hook, sd);
 283    evas_object_smart_callback_add(sd->pan_obj, "pan_changed", _smart_pan_pan_changed_hook, sd);
 284    edje_object_part_swallow(sd->edje_obj, "elm.swallow.content", sd->pan_obj);
 285    evas_object_show(sd->pan_obj);
 286 }
 287
 288 void
 289 elm_smart_scroller_custom_edje_file_set(Evas_Object *obj, char *file, char *group)
 290 {
 291    API_ENTRY return;
 292
 293    edje_object_file_set(sd->edje_obj, file, group);
 294    if (sd->pan_obj)
 295      edje_object_part_swallow(sd->edje_obj, "elm.swallow.content", sd->pan_obj);
 296    sd->vbar_visible = !sd->vbar_visible;
 297    sd->hbar_visible = !sd->hbar_visible;
 298    _smart_scrollbar_bar_visibility_adjust(sd);
 299    if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
 300      edje_object_signal_emit(sd->edje_obj, "elm,action,show_always,hbar", "elm");
 301    else if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
 302      edje_object_signal_emit(sd->edje_obj, "elm,action,hide,hbar", "elm");
 303    else
 304      edje_object_signal_emit(sd->edje_obj, "elm,action,show_notalways,hbar", "elm");
 305    if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
 306      edje_object_signal_emit(sd->edje_obj, "elm,action,show_always,vbar", "elm");
 307    else if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
 308      edje_object_signal_emit(sd->edje_obj, "elm,action,hide,vbar", "elm");
 309    else
 310      edje_object_signal_emit(sd->edje_obj, "elm,action,show_notalways,vbar", "elm");
 311 }
 312
 313 Eina_Bool
 314 elm_smart_scroller_momentum_animator_disabled_get(Evas_Object *obj)
 315 {
 316    API_ENTRY return EINA_FALSE;
 317    return sd->momentum_animator_disabled;
 318 }
 319
 320 void
 321 elm_smart_scroller_momentum_animator_disabled_set(Evas_Object *obj, Eina_Bool disabled)
 322 {
 323    API_ENTRY return;
 324    sd->momentum_animator_disabled = disabled;
 325    if (sd->momentum_animator_disabled)
 326      {
 327         if (sd->down.momentum_animator)
 328           {
 329              ecore_animator_del(sd->down.momentum_animator);
 330              sd->down.momentum_animator = NULL;
 331           }
 332      }
 333 }
 334
 335 Eina_Bool
 336 elm_smart_scroller_bounce_animator_disabled_get(Evas_Object *obj)
 337 {
 338    API_ENTRY return EINA_FALSE;
 339    return sd->bounce_animator_disabled;
 340 }
 341
 342 void
 343 elm_smart_scroller_bounce_animator_disabled_set(Evas_Object *obj, Eina_Bool disabled)
 344 {
 345    API_ENTRY return;
 346    sd->bounce_animator_disabled = disabled;
 347    if (sd->bounce_animator_disabled)
 348      {
 349         if (sd->scrollto.x.animator)
 350           {
 351              ecore_animator_del(sd->scrollto.x.animator);
 352              sd->scrollto.x.animator = NULL;
 353           }
 354
 355         if (sd->scrollto.y.animator)
 356           {
 357              ecore_animator_del(sd->scrollto.y.animator);
 358              sd->scrollto.y.animator = NULL;
 359           }
 360      }
 361 }
 362
 363 Eina_Bool
 364 elm_smart_scroller_wheel_disabled_get(Evas_Object *obj)
 365 {
 366    API_ENTRY return EINA_FALSE;
 367    return sd->wheel_disabled;
 368 }
 369
 370 void
 371 elm_smart_scroller_wheel_disabled_set(Evas_Object *obj, Eina_Bool disabled)
 372 {
 373    API_ENTRY return;
 374    if ((!sd->wheel_disabled) && (disabled))
 375      evas_object_event_callback_del_full(sd->event_obj, EVAS_CALLBACK_MOUSE_WHEEL, _smart_event_wheel, sd);
 376    else if ((sd->wheel_disabled) && (!disabled))
 377      evas_object_event_callback_add(sd->event_obj, EVAS_CALLBACK_MOUSE_WHEEL, _smart_event_wheel, sd);
 378    sd->wheel_disabled = disabled;
 379 }
 380
 381 /* Update the wanted coordinates according to the x, y passed
 382  * widget directionality, child size and etc. */
 383 static void
 384 _update_wanted_coordinates(Smart_Data *sd, Evas_Coord x, Evas_Coord y)
 385 {
 386    Evas_Coord cw, ch;
 387
 388    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
 389
 390    /* Update wx/y/w/h - and if the requested positions aren't legal
 391     * adjust a bit. */
 392    elm_smart_scroller_child_viewport_size_get(sd->smart_obj, &sd->ww, &sd->wh);
 393    if (x < 0)
 394       sd->wx = 0;
 395    else if ((x + sd->ww) > cw)
 396       sd->wx = cw - sd->ww;
 397    else if (sd->is_mirrored)
 398       sd->wx = _elm_smart_scroller_x_mirrored_get(sd->smart_obj, x);
 399    else
 400       sd->wx = x;
 401    if (y < 0) sd->wy = 0;
 402    else if ((y + sd->wh) > ch) sd->wy = ch - sd->wh;
 403    else sd->wy = y;
 404 }
 405
 406 static void
 407 _smart_anim_start(Evas_Object *obj)
 408 {
 409    evas_object_smart_callback_call(obj, "animate,start", NULL);
 410 }
 411
 412 static void
 413 _smart_anim_stop(Evas_Object *obj)
 414 {
 415    evas_object_smart_callback_call(obj, "animate,stop", NULL);
 416 }
 417
 418 static void
 419 _smart_drag_start(Evas_Object *obj)
 420 {
 421    evas_object_smart_callback_call(obj, "drag,start", NULL);
 422 }
 423
 424 static void
 425 _smart_drag_stop(Evas_Object *obj)
 426 {
 427    evas_object_smart_callback_call(obj, "drag,stop", NULL);
 428 }
 429
 430 static Eina_Bool
 431 _smart_scrollto_x_animator(void *data)
 432 {
 433    Smart_Data *sd = data;
 434    Evas_Coord px, py;
 435    double t, tt;
 436
 437    t = ecore_loop_time_get();
 438    tt = (t - sd->scrollto.x.t_start) / (sd->scrollto.x.t_end - sd->scrollto.x.t_start);
 439    tt = 1.0 - tt;
 440    tt = 1.0 - (tt * tt);
 441    sd->pan_func.get(sd->pan_obj, &px, &py);
 442    px = (sd->scrollto.x.start * (1.0 - tt)) +
 443      (sd->scrollto.x.end * tt);
 444    if (t >= sd->scrollto.x.t_end)
 445      {
 446         px = sd->scrollto.x.end;
 447         elm_smart_scroller_child_pos_set(sd->smart_obj, px, py);
 448         sd->scrollto.x.animator = NULL;
 449         if ((!sd->scrollto.y.animator) && (!sd->down.bounce_y_animator))
 450           _smart_anim_stop(sd->smart_obj);
 451         return ECORE_CALLBACK_CANCEL;
 452      }
 453    elm_smart_scroller_child_pos_set(sd->smart_obj, px, py);
 454    return ECORE_CALLBACK_RENEW;
 455 }
 456
 457 static void
 458 _smart_momentum_end(Smart_Data *sd)
 459 {
 460    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator)) return;
 461    if (sd->down.momentum_animator)
 462      {
 463         Evas_Coord px, py;
 464         elm_smart_scroller_child_pos_get(sd->smart_obj, &px, &py);
 465         _update_wanted_coordinates(sd, px, py);
 466
 467         ecore_animator_del(sd->down.momentum_animator);
 468         sd->down.momentum_animator = NULL;
 469         sd->down.bounce_x_hold = 0;
 470         sd->down.bounce_y_hold = 0;
 471         sd->down.ax = 0;
 472         sd->down.ay = 0;
 473         sd->down.pdx = 0;
 474         sd->down.pdy = 0;
 475      }
 476 }
 477
 478 static void
 479 _smart_scrollto_x(Smart_Data *sd, double t_in, Evas_Coord pos_x)
 480 {
 481    Evas_Coord px, py, x, y, w, h;
 482    double t;
 483
 484    if (sd->freeze) return;
 485    if (t_in <= 0.0)
 486      {
 487         elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
 488         elm_smart_scroller_child_viewport_size_get(sd->smart_obj, &w, &h);
 489         x = pos_x;
 490         elm_smart_scroller_child_region_set(sd->smart_obj, x, y, w, h);
 491         return;
 492      }
 493    t = ecore_loop_time_get();
 494    sd->pan_func.get(sd->pan_obj, &px, &py);
 495    sd->scrollto.x.start = px;
 496    sd->scrollto.x.end = pos_x;
 497    sd->scrollto.x.t_start = t;
 498    sd->scrollto.x.t_end = t + t_in;
 499    if (!sd->scrollto.x.animator)
 500      {
 501         if (!sd->scrollto.y.animator)
 502           _smart_anim_start(sd->smart_obj);
 503         sd->scrollto.x.animator = ecore_animator_add(_smart_scrollto_x_animator, sd);
 504      }
 505    if (sd->down.bounce_x_animator)
 506      {
 507         ecore_animator_del(sd->down.bounce_x_animator);
 508         sd->down.bounce_x_animator = NULL;
 509         _smart_momentum_end(sd);
 510      }
 511    sd->bouncemex = 0;
 512 }
 513
 514 static Eina_Bool
 515 _smart_scrollto_y_animator(void *data)
 516 {
 517    Smart_Data *sd = data;
 518    Evas_Coord px, py;
 519    double t, tt;
 520
 521    t = ecore_loop_time_get();
 522    tt = (t - sd->scrollto.y.t_start) / (sd->scrollto.y.t_end - sd->scrollto.y.t_start);
 523    tt = 1.0 - tt;
 524    tt = 1.0 - (tt * tt);
 525    sd->pan_func.get(sd->pan_obj, &px, &py);
 526    py = (sd->scrollto.y.start * (1.0 - tt)) +
 527      (sd->scrollto.y.end * tt);
 528    if (t >= sd->scrollto.y.t_end)
 529      {
 530         py = sd->scrollto.y.end;
 531         elm_smart_scroller_child_pos_set(sd->smart_obj, px, py);
 532         sd->scrollto.y.animator = NULL;
 533         if ((!sd->scrollto.x.animator) && (!sd->down.bounce_x_animator))
 534           _smart_anim_stop(sd->smart_obj);
 535         return ECORE_CALLBACK_CANCEL;
 536      }
 537    elm_smart_scroller_child_pos_set(sd->smart_obj, px, py);
 538
 539    return ECORE_CALLBACK_RENEW;
 540 }
 541
 542 static void
 543 _smart_scrollto_y(Smart_Data *sd, double t_in, Evas_Coord pos_y)
 544 {
 545    Evas_Coord px, py, x, y, w, h;
 546    double t;
 547
 548    if (sd->freeze) return;
 549    if (t_in <= 0.0)
 550      {
 551         elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
 552         elm_smart_scroller_child_viewport_size_get(sd->smart_obj, &w, &h);
 553         y = pos_y;
 554         elm_smart_scroller_child_region_set(sd->smart_obj, x, y, w, h);
 555         return;
 556      }
 557    t = ecore_loop_time_get();
 558    sd->pan_func.get(sd->pan_obj, &px, &py);
 559    sd->scrollto.y.start = py;
 560    sd->scrollto.y.end = pos_y;
 561    sd->scrollto.y.t_start = t;
 562    sd->scrollto.y.t_end = t + t_in;
 563    if (!sd->scrollto.y.animator)
 564      {
 565         if (!sd->scrollto.x.animator)
 566           _smart_anim_start(sd->smart_obj);
 567         sd->scrollto.y.animator = ecore_animator_add(_smart_scrollto_y_animator, sd);
 568      }
 569    if (sd->down.bounce_y_animator)
 570      {
 571         ecore_animator_del(sd->down.bounce_y_animator);
 572         sd->down.bounce_y_animator = NULL;
 573         _smart_momentum_end(sd);
 574      }
 575    sd->bouncemey = 0;
 576 }
 577
 578 static Eina_Bool
 579 _smart_do_page(Smart_Data *sd)
 580 {
 581    if ((sd->pagerel_h == 0.0) && (!sd->pagesize_h) &&
 582        (sd->pagerel_v == 0.0) && (!sd->pagesize_v))
 583      return EINA_FALSE;
 584    return EINA_TRUE;
 585 }
 586
 587 static Evas_Coord
 588 _smart_page_x_get(Smart_Data *sd, int offset)
 589 {
 590    Evas_Coord x, y, w, h, cw, ch, minx = 0;
 591
 592    elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
 593    elm_smart_scroller_child_viewport_size_get(sd->smart_obj, &w, &h);
 594    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
 595    sd->pan_func.min_get(sd->pan_obj, &minx, NULL);
 596
 597    x += offset;
 598
 599    if (sd->pagerel_h > 0.0)
 600      {
 601         x = x + (w * sd->pagerel_h * 0.5);
 602         x = x / (w * sd->pagerel_h);
 603         x = x * (w * sd->pagerel_h);
 604      }
 605    else if (sd->pagesize_h > 0)
 606      {
 607         x = x + (sd->pagesize_h * 0.5);
 608         x = x / (sd->pagesize_h);
 609         x = x * (sd->pagesize_h);
 610      }
 611    if ((x + w) > cw) x = cw - w;
 612    if (x < minx) x = minx;
 613    return x;
 614 }
 615
 616 static Evas_Coord
 617 _smart_page_y_get(Smart_Data *sd, int offset)
 618 {
 619    Evas_Coord x, y, w, h, cw, ch, miny = 0;
 620
 621    elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
 622    elm_smart_scroller_child_viewport_size_get(sd->smart_obj, &w, &h);
 623    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
 624    sd->pan_func.min_get(sd->pan_obj, NULL, &miny);
 625
 626    y += offset;
 627
 628    if (sd->pagerel_v > 0.0)
 629      {
 630         y = y + (h * sd->pagerel_v * 0.5);
 631         y = y / (h * sd->pagerel_v);
 632         y = y * (h * sd->pagerel_v);
 633      }
 634    else if (sd->pagesize_v > 0)
 635      {
 636         y = y + (sd->pagesize_v * 0.5);
 637         y = y / (sd->pagesize_v);
 638         y = y * (sd->pagesize_v);
 639      }
 640    if ((y + h) > ch) y = ch - h;
 641    if (y < miny) y = miny;
 642    return y;
 643 }
 644
 645 static void
 646 _smart_page_adjust(Smart_Data *sd)
 647 {
 648    Evas_Coord x, y, w, h;
 649
 650    if (!_smart_do_page(sd)) return;
 651
 652    elm_smart_scroller_child_viewport_size_get(sd->smart_obj, &w, &h);
 653
 654    x = _smart_page_x_get(sd, 0);
 655    y = _smart_page_y_get(sd, 0);
 656
 657    elm_smart_scroller_child_region_set(sd->smart_obj, x, y, w, h);
 658 }
 659
 660 static Eina_Bool
 661 _smart_bounce_x_animator(void *data)
 662 {
 663    Smart_Data *sd;
 664    Evas_Coord x, y, dx, px, w, odx, ed, md;
 665    double t, p, dt, pd, r;
 666
 667    sd = data;
 668    t = ecore_loop_time_get();
 669    dt = t - sd->down.anim_start2;
 670    if (dt >= 0.0)
 671      {
 672         dt = dt / _elm_config->thumbscroll_bounce_friction;
 673         odx = sd->down.b2x - sd->down.bx;
 674         sd->pan_func.get(sd->pan_obj, &px, NULL);
 675         elm_smart_scroller_child_viewport_size_get(sd->smart_obj, &w, NULL);
 676         if (!sd->down.momentum_animator && ((w - px) > 0) && ((-px) < w))
 677           {
 678              pd = (double)odx / (double)w;
 679              pd = (pd > 0) ? pd : -pd;
 680              pd = 1.0 - ((1.0 - pd) * (1.0 - pd));
 681              dt = dt / pd;
 682           }
 683         if (dt > 1.0) dt = 1.0;
 684         p = 1.0 - ((1.0 - dt) * (1.0 - dt));
 685         elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
 686         dx = (odx * p);
 687         r = 1.0;
 688         if (sd->down.momentum_animator)
 689           {
 690              ed = abs(sd->down.dx * (_elm_config->thumbscroll_friction + sd->down.extra_time) - sd->down.b0x);
 691              md = abs(15*w); // FIXME : 15 - probably should be config
 692              if (ed > md) r = (double)(md)/(double)ed;
 693           }
 694         x = sd->down.b2x + (int)((double)(dx - odx)*r);
 695         if (!sd->down.cancelled)
 696           elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
 697         if (dt >= 1.0)
 698           {
 699              if (sd->down.momentum_animator)
 700                sd->down.bounce_x_hold = 1;
 701              else if ((!sd->down.bounce_y_animator) &&
 702                       (!sd->scrollto.y.animator))
 703                _smart_anim_stop(sd->smart_obj);
 704              sd->down.bounce_x_animator = NULL;
 705              sd->down.pdx = 0;
 706              sd->bouncemex = 0;
 707              _smart_momentum_end(sd);
 708              return ECORE_CALLBACK_CANCEL;
 709           }
 710      }
 711    return ECORE_CALLBACK_RENEW;
 712 }
 713
 714 static Eina_Bool
 715 _smart_bounce_y_animator(void *data)
 716 {
 717    Smart_Data *sd;
 718    Evas_Coord x, y, dy, py, h, ody, ed, md;
 719    double t, p, dt, pd, r;
 720
 721    sd = data;
 722    t = ecore_loop_time_get();
 723    dt = t - sd->down.anim_start3;
 724    if (dt >= 0.0)
 725      {
 726         dt = dt / _elm_config->thumbscroll_bounce_friction;
 727         ody = sd->down.b2y - sd->down.by;
 728         sd->pan_func.get(sd->pan_obj, NULL, &py);
 729         elm_smart_scroller_child_viewport_size_get(sd->smart_obj, NULL, &h);
 730         if (!sd->down.momentum_animator && ((h - py) > 0) && ((-py) < h))
 731           {
 732              pd = (double)ody / (double)h;
 733              pd = (pd > 0) ? pd : -pd;
 734              pd = 1.0 - ((1.0 - pd) * (1.0 - pd));
 735              dt = dt / pd;
 736           }
 737         if (dt > 1.0) dt = 1.0;
 738         p = 1.0 - ((1.0 - dt) * (1.0 - dt));
 739         elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
 740         dy = (ody * p);
 741         r = 1.0;
 742         if (sd->down.momentum_animator)
 743           {
 744              ed = abs(sd->down.dy * (_elm_config->thumbscroll_friction + sd->down.extra_time) - sd->down.b0y);
 745              md = abs(15*h); // FIXME : 15 - probably should be config
 746              if (ed > md) r = (double)(md)/(double)ed;
 747           }
 748         y = sd->down.b2y + (int)((double)(dy - ody)*r);
 749         if (!sd->down.cancelled)
 750           elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
 751         if (dt >= 1.0)
 752           {
 753              if (sd->down.momentum_animator)
 754                sd->down.bounce_y_hold = 1;
 755              else if ((!sd->down.bounce_x_animator) &&
 756                  (!sd->scrollto.y.animator))
 757                _smart_anim_stop(sd->smart_obj);
 758              sd->down.bounce_y_animator = NULL;
 759              sd->down.pdy = 0;
 760              sd->bouncemey = 0;
 761              _smart_momentum_end(sd);
 762              return ECORE_CALLBACK_CANCEL;
 763           }
 764      }
 765    return ECORE_CALLBACK_RENEW;
 766 }
 767
 768 #define LEFT 0
 769 #define RIGHT 1
 770 #define UP 2
 771 #define DOWN 3
 772 static Eina_Bool
 773 can_scroll(Smart_Data *sd, int dir)
 774 {
 775    Evas_Coord mx = 0, my = 0, px = 0, py = 0, minx = 0, miny = 0;
 776
 777    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
 778    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
 779    sd->pan_func.get(sd->pan_obj, &px, &py);
 780    switch (dir)
 781      {
 782      case LEFT:
 783         if (px > minx) return EINA_TRUE;
 784         break;
 785      case RIGHT:
 786         if ((px - minx) < mx) return EINA_TRUE;
 787         break;
 788      case UP:
 789         if (py > miny) return EINA_TRUE;
 790         break;
 791      case DOWN:
 792         if ((py - miny) < my) return EINA_TRUE;
 793         break;
 794      default:
 795         break;
 796      }
 797    return EINA_FALSE;
 798 }
 799
 800 static Eina_Bool
 801 _smart_momentum_animator(void *data)
 802 {
 803    Smart_Data *sd;
 804    double t, dt, p;
 805    Evas_Coord x, y, dx, dy, px, py, maxx, maxy, minx, miny;
 806    Eina_Bool no_bounce_x_end = EINA_FALSE, no_bounce_y_end = EINA_FALSE;
 807
 808    sd = data;
 809    t = ecore_loop_time_get();
 810    dt = t - sd->down.anim_start;
 811    if (dt >= 0.0)
 812      {
 813         /*
 814         if (sd->down.hold_parent)
 815           {
 816              if ((sd->down.dir_x) && !can_scroll(sd, sd->down.hdir))
 817                {
 818                   sd->down.dir_x = 0;
 819                }
 820              if ((sd->down.dir_y) && !can_scroll(sd, sd->down.vdir))
 821                {
 822                   sd->down.dir_y = 0;
 823                   }
 824                   }
 825                   if ((!sd->down.dir_x) && (!sd->down.dir_y))
 826                   {
 827                   sd->down.cancelled = 1;
 828                   }
 829          */
 830         dt = dt / (_elm_config->thumbscroll_friction + sd->down.extra_time);
 831         if (dt > 1.0) dt = 1.0;
 832         p = 1.0 - ((1.0 - dt) * (1.0 - dt));
 833         dx = (sd->down.dx * (_elm_config->thumbscroll_friction + sd->down.extra_time) * p);
 834         dy = (sd->down.dy * (_elm_config->thumbscroll_friction + sd->down.extra_time) * p);
 835         sd->down.ax = dx;
 836         sd->down.ay = dy;
 837         x = sd->down.sx - dx;
 838         y = sd->down.sy - dy;
 839         elm_smart_scroller_child_pos_get(sd->smart_obj, &px, &py);
 840         if ((sd->down.bounce_x_animator) ||
 841             (sd->down.bounce_x_hold))
 842           {
 843              sd->down.bx = sd->down.bx0 - dx + sd->down.b0x;
 844              x = px;
 845           }
 846         if ((sd->down.bounce_y_animator) ||
 847             (sd->down.bounce_y_hold))
 848           {
 849              sd->down.by = sd->down.by0 - dy + sd->down.b0y;
 850              y = py;
 851           }
 852         elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
 853         sd->pan_func.max_get(sd->pan_obj, &maxx, &maxy);
 854         sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
 855         if (!sd->bounce_horiz)
 856           {
 857              if (x <= minx) no_bounce_x_end = EINA_TRUE;
 858              if ((x - minx) >= maxx) no_bounce_x_end = EINA_TRUE;
 859           }
 860         if (!sd->bounce_vert)
 861           {
 862              if (y <= miny) no_bounce_y_end = EINA_TRUE;
 863              if ((y - miny) >= maxy) no_bounce_y_end = EINA_TRUE;
 864           }
 865         if ((dt >= 1.0) ||
 866             ((sd->down.bounce_x_hold) && (sd->down.bounce_y_hold)) ||
 867             (no_bounce_x_end && no_bounce_y_end))
 868           {
 869              _smart_anim_stop(sd->smart_obj);
 870              _update_wanted_coordinates(sd, px, py);
 871
 872              sd->down.momentum_animator = NULL;
 873              sd->down.bounce_x_hold = 0;
 874              sd->down.bounce_y_hold = 0;
 875              sd->down.ax = 0;
 876              sd->down.ay = 0;
 877              sd->down.pdx = 0;
 878              sd->down.pdy = 0;
 879              return ECORE_CALLBACK_CANCEL;
 880           }
 881      }
 882    return ECORE_CALLBACK_RENEW;
 883 }
 884
 885 static void
 886 bounce_eval(Smart_Data *sd)
 887 {
 888    Evas_Coord mx, my, px, py, bx, by, b2x, b2y, minx = 0, miny = 0;
 889
 890    if (sd->freeze) return;
 891    if ((!sd->bouncemex) && (!sd->bouncemey)) return;
 892    if (sd->down.now) return; // down bounce while still held down
 893    if (sd->down.onhold_animator)
 894      {
 895         ecore_animator_del(sd->down.onhold_animator);
 896         sd->down.onhold_animator = NULL;
 897      }
 898    if (sd->down.hold_animator)
 899      {
 900         ecore_animator_del(sd->down.hold_animator);
 901         sd->down.hold_animator = NULL;
 902      }
 903    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
 904    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
 905    sd->pan_func.get(sd->pan_obj, &px, &py);
 906    bx = px;
 907    by = py;
 908    if (px < minx) px = minx;
 909    if ((px - minx) > mx) px = mx + minx;
 910    if (py < miny) py = miny;
 911    if ((py - miny) > my) py = my + miny;
 912    b2x = px;
 913    b2y = py;
 914    if ((!sd->widget) ||
 915        (!elm_widget_drag_child_locked_x_get(sd->widget)))
 916      {
 917         if (!sd->down.bounce_x_animator && !sd->bounce_animator_disabled)
 918           {
 919              if (sd->bouncemex)
 920                {
 921                   if (sd->scrollto.x.animator)
 922                     {
 923                        ecore_animator_del(sd->scrollto.x.animator);
 924                        sd->scrollto.x.animator = NULL;
 925                     }
 926                   sd->down.bounce_x_animator = ecore_animator_add(_smart_bounce_x_animator, sd);
 927                   sd->down.anim_start2 = ecore_loop_time_get();
 928                   sd->down.bx = bx;
 929                   sd->down.bx0 = bx;
 930                   sd->down.b2x = b2x;
 931                   if (sd->down.momentum_animator) sd->down.b0x = sd->down.ax;
 932                   else sd->down.b0x = 0;
 933                }
 934           }
 935      }
 936    if ((!sd->widget) ||
 937        (!elm_widget_drag_child_locked_y_get(sd->widget)))
 938      {
 939         if (!sd->down.bounce_y_animator && !sd->bounce_animator_disabled)
 940           {
 941              if (sd->bouncemey)
 942                {
 943                   if (sd->scrollto.y.animator)
 944                     {
 945                        ecore_animator_del(sd->scrollto.y.animator);
 946                        sd->scrollto.y.animator = NULL;
 947                     }
 948                   sd->down.bounce_y_animator = ecore_animator_add(_smart_bounce_y_animator, sd);
 949                   sd->down.anim_start3 = ecore_loop_time_get();
 950                   sd->down.by = by;
 951                   sd->down.by0 = by;
 952                   sd->down.b2y = b2y;
 953                   if (sd->down.momentum_animator) sd->down.b0y = sd->down.ay;
 954                   else sd->down.b0y = 0;
 955                }
 956           }
 957      }
 958 }
 959
 960 void
 961 elm_smart_scroller_child_pos_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
 962 {
 963    Evas_Coord mx = 0, my = 0, px = 0, py = 0, minx = 0, miny = 0;
 964    double vx, vy;
 965
 966    API_ENTRY return;
 967    // FIXME: allow for bounce outside of range
 968    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
 969    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
 970    if (mx > 0) vx = (double)(x - minx) / (double)mx;
 971    else vx = 0.0;
 972    if (vx < 0.0) vx = 0.0;
 973    else if (vx > 1.0) vx = 1.0;
 974    if (my > 0) vy = (double)(y - miny) / (double)my;
 975    else vy = 0.0;
 976    if (vy < 0.0) vy = 0.0;
 977    else if (vy > 1.0) vy = 1.0;
 978    edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.vbar", 0.0, vy);
 979    edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.hbar", vx, 0.0);
 980    sd->pan_func.get(sd->pan_obj, &px, &py);
 981    if (!_elm_config->thumbscroll_bounce_enable)
 982      {
 983         if (x < minx) x = minx;
 984         if ((x - minx) > mx) x = mx + minx;
 985         if (y < miny) y = miny;
 986         if ((y - miny) > my) y = my + miny;
 987      }
 988
 989    if (!sd->bounce_horiz)
 990      {
 991         if (x < minx) x = minx;
 992         if ((x - minx) > mx) x = mx + minx;
 993      }
 994    if (!sd->bounce_vert)
 995      {
 996         if (y < miny) y = miny;
 997         if (y - miny > my) y = my + miny;
 998      }
 999
1000    sd->pan_func.set(sd->pan_obj, x, y);
1001    if ((px != x) || (py != y))
1002      edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
1003    if (!sd->down.bounce_x_animator)
1004      {
1005         if ((x < minx) || (x > (mx + minx)))
1006           {
1007              sd->bouncemex = 1;
1008              bounce_eval(sd);
1009           }
1010      }
1011    if (!sd->down.bounce_y_animator)
1012      {
1013         if ((y < miny) || (y > my + miny))
1014           {
1015              sd->bouncemey = 1;
1016              bounce_eval(sd);
1017           }
1018      }
1019    if ((x != px) || (y != py))
1020      {
1021         evas_object_smart_callback_call(obj, "scroll", NULL);
1022      }
1023    if ((x != px)/* && (!sd->bouncemex)*/)
1024      {
1025         if (x == minx)
1026           evas_object_smart_callback_call(obj, "edge,left", NULL);
1027         if (x == (mx + minx))
1028           evas_object_smart_callback_call(obj, "edge,right", NULL);
1029      }
1030    if ((y != py)/* && (!sd->bouncemey)*/)
1031      {
1032         if (y == miny)
1033           evas_object_smart_callback_call(obj, "edge,top", NULL);
1034         if (y == my + miny)
1035           evas_object_smart_callback_call(obj, "edge,bottom", NULL);
1036      }
1037 }
1038
1039 void
1040 elm_smart_scroller_child_pos_get(Evas_Object *obj, Evas_Coord *x, Evas_Coord *y)
1041 {
1042    API_ENTRY return;
1043    sd->pan_func.get(sd->pan_obj, x, y);
1044 }
1045
1046 /* "internal_call" actually toggles whether we should save the coords and do
1047  * extra "speedup" checks, or not. */
1048 static void
1049 _elm_smart_scroller_child_region_show_internal(Evas_Object *obj, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h, Eina_Bool internal_call)
1050 {
1051    Evas_Coord mx = 0, my = 0, cw = 0, ch = 0, px = 0, py = 0, nx, ny, minx = 0, miny = 0;
1052
1053    API_ENTRY return;
1054    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
1055    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
1056    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
1057    sd->pan_func.get(sd->pan_obj, &px, &py);
1058
1059    nx = px;
1060    if ((x < px) && ((x + w) < (px + (cw - mx)))) nx = x;
1061    else if ((x > px) && ((x + w) > (px + (cw - mx)))) nx = x + w - (cw - mx);
1062    ny = py;
1063    if ((y < py) && ((y + h) < (py + (ch - my)))) ny = y;
1064    else if ((y > py) && ((y + h) > (py + (ch - my)))) ny = y + h - (ch - my);
1065    if (!internal_call)
1066      {
1067         sd->wx = x;
1068         sd->wy = y;
1069         sd->ww = w;
1070         sd->wh = h;
1071         if ((nx == px) && (ny == py)) return;
1072      }
1073
1074    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1075        (sd->scrollto.x.animator) || (sd->scrollto.y.animator))
1076      {
1077         _smart_anim_stop(sd->smart_obj);
1078      }
1079    if (sd->scrollto.x.animator)
1080      {
1081         ecore_animator_del(sd->scrollto.x.animator);
1082         sd->scrollto.x.animator = NULL;
1083      }
1084    if (sd->scrollto.y.animator)
1085      {
1086         ecore_animator_del(sd->scrollto.y.animator);
1087         sd->scrollto.y.animator = NULL;
1088      }
1089    if (sd->down.bounce_x_animator)
1090      {
1091         ecore_animator_del(sd->down.bounce_x_animator);
1092         sd->down.bounce_x_animator = NULL;
1093         sd->bouncemex = 0;
1094      }
1095    if (sd->down.bounce_y_animator)
1096      {
1097         ecore_animator_del(sd->down.bounce_y_animator);
1098         sd->down.bounce_y_animator = NULL;
1099         sd->bouncemey = 0;
1100      }
1101    if (sd->down.hold_animator)
1102      {
1103         ecore_animator_del(sd->down.hold_animator);
1104         sd->down.hold_animator = NULL;
1105         _smart_drag_stop(sd->smart_obj);
1106      }
1107    if (sd->down.momentum_animator)
1108      {
1109         ecore_animator_del(sd->down.momentum_animator);
1110         sd->down.momentum_animator = NULL;
1111         sd->down.bounce_x_hold = 0;
1112         sd->down.bounce_y_hold = 0;
1113         sd->down.ax = 0;
1114         sd->down.ay = 0;
1115         sd->down.pdx = 0;
1116         sd->down.pdy = 0;
1117      }
1118    x = nx;
1119    if ((x + w) > cw) x = cw - w;
1120    if (x < minx) x = minx;
1121    y = ny;
1122    if ((y + h) > ch) y = ch - h;
1123    if (y < miny) y = miny;
1124    elm_smart_scroller_child_pos_set(obj, x, y);
1125 }
1126
1127 /* Set should be used for calculated positions, for example, when we move
1128  * because of an animation or because this is the correct position after
1129  * constraints. */
1130 void
1131 elm_smart_scroller_child_region_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
1132 {
1133    _elm_smart_scroller_child_region_show_internal(obj, x, y, w, h, EINA_TRUE);
1134 }
1135
1136 /* Set should be used for setting the wanted position, for example a user scroll
1137  * or moving the cursor in an entry. */
1138 void
1139 elm_smart_scroller_child_region_show(Evas_Object *obj, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
1140 {
1141    _elm_smart_scroller_child_region_show_internal(obj, x, y, w, h, EINA_FALSE);
1142 }
1143
1144 void
1145 elm_smart_scroller_child_viewport_size_get(Evas_Object *obj, Evas_Coord *w, Evas_Coord *h)
1146 {
1147    API_ENTRY return;
1148    if (!sd->pan_obj) return;
1149    edje_object_calc_force(sd->edje_obj);
1150    evas_object_geometry_get(sd->pan_obj, NULL, NULL, w, h);
1151 }
1152
1153 void
1154 elm_smart_scroller_step_size_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
1155 {
1156    API_ENTRY return;
1157    if (x < 1) x = 1;
1158    if (y < 1) y = 1;
1159    sd->step.x = x;
1160    sd->step.y = y;
1161    _smart_scrollbar_size_adjust(sd);
1162 }
1163
1164 void
1165 elm_smart_scroller_step_size_get(Evas_Object *obj, Evas_Coord *x, Evas_Coord *y)
1166 {
1167    API_ENTRY return;
1168    if (x) *x = sd->step.x;
1169    if (y) *y = sd->step.y;
1170 }
1171
1172 void
1173 elm_smart_scroller_page_size_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
1174 {
1175    API_ENTRY return;
1176    sd->page.x = x;
1177    sd->page.y = y;
1178    _smart_scrollbar_size_adjust(sd);
1179 }
1180
1181 void
1182 elm_smart_scroller_page_size_get(Evas_Object *obj, Evas_Coord *x, Evas_Coord *y)
1183 {
1184    API_ENTRY return;
1185    if (x) *x = sd->page.x;
1186    if (y) *y = sd->page.y;
1187 }
1188
1189 void
1190 elm_smart_scroller_policy_set(Evas_Object *obj, Elm_Smart_Scroller_Policy hbar, Elm_Smart_Scroller_Policy vbar)
1191 {
1192    API_ENTRY return;
1193    if ((sd->hbar_flags == hbar) && (sd->vbar_flags == vbar)) return;
1194    sd->hbar_flags = hbar;
1195    sd->vbar_flags = vbar;
1196    if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
1197      edje_object_signal_emit(sd->edje_obj, "elm,action,show_always,hbar", "elm");
1198    else if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
1199      edje_object_signal_emit(sd->edje_obj, "elm,action,hide,hbar", "elm");
1200    else
1201      edje_object_signal_emit(sd->edje_obj, "elm,action,show_notalways,hbar", "elm");
1202    if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
1203      edje_object_signal_emit(sd->edje_obj, "elm,action,show_always,vbar", "elm");
1204    else if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
1205      edje_object_signal_emit(sd->edje_obj, "elm,action,hide,vbar", "elm");
1206    else
1207      edje_object_signal_emit(sd->edje_obj, "elm,action,show_notalways,vbar", "elm");
1208    _smart_scrollbar_size_adjust(sd);
1209 }
1210
1211 void
1212 elm_smart_scroller_policy_get(Evas_Object *obj, Elm_Smart_Scroller_Policy *hbar, Elm_Smart_Scroller_Policy *vbar)
1213 {
1214    API_ENTRY return;
1215    if (hbar) *hbar = sd->hbar_flags;
1216    if (vbar) *vbar = sd->vbar_flags;
1217 }
1218
1219 Evas_Object *
1220 elm_smart_scroller_edje_object_get(Evas_Object *obj)
1221 {
1222    API_ENTRY return NULL;
1223    return sd->edje_obj;
1224 }
1225
1226 void
1227 elm_smart_scroller_single_dir_set(Evas_Object *obj, Eina_Bool single_dir)
1228 {
1229    API_ENTRY return;
1230    sd->one_dir_at_a_time = single_dir;
1231 }
1232
1233 Eina_Bool
1234 elm_smart_scroller_single_dir_get(Evas_Object *obj)
1235 {
1236    API_ENTRY return EINA_FALSE;
1237    return sd->one_dir_at_a_time;
1238 }
1239
1240 void
1241 elm_smart_scroller_propagate_events_set(Evas_Object *obj, Eina_Bool propagation)
1242 {
1243    API_ENTRY return;
1244    sd->event_propagation = propagation;
1245
1246    evas_object_propagate_events_set(sd->edje_obj, propagation);
1247 }
1248
1249 Eina_Bool
1250 elm_smart_scroller_propagate_events_get(Evas_Object *obj)
1251 {
1252    API_ENTRY return EINA_FALSE;
1253    return sd->event_propagation;
1254 }
1255
1256 void
1257 elm_smart_scroller_object_theme_set(Evas_Object *parent, Evas_Object *obj, const char *clas, const char *group, const char *style)
1258 {
1259    API_ENTRY return;
1260    Evas_Coord mw, mh;
1261    //Does this API require parent object absolutely? if then remove this exception.
1262    double parent_scale = parent ? elm_widget_scale_get(parent) : 1;
1263    _elm_theme_object_set(parent, sd->edje_obj, clas, group, style);
1264    edje_object_scale_set(sd->edje_obj, parent_scale * _elm_config->scale);
1265    if (sd->pan_obj)
1266      edje_object_part_swallow(sd->edje_obj, "elm.swallow.content", sd->pan_obj);
1267    mw = mh = -1;
1268    elm_coords_finger_size_adjust(1, &mw, 1, &mh);
1269    if (edje_object_part_exists(sd->edje_obj, "elm.scrollbar.base"))
1270      {
1271         Evas_Object *base;
1272         base = edje_object_part_swallow_get(sd->edje_obj, "elm.scrollbar.base");
1273         if (!base)
1274           {
1275              base = evas_object_rectangle_add(evas_object_evas_get(sd->edje_obj));
1276              evas_object_color_set(base, 0, 0, 0, 0);
1277              edje_object_part_swallow(sd->edje_obj, "elm.scrollbar.base", base);
1278           }
1279         if (!_elm_config->thumbscroll_enable)
1280            evas_object_size_hint_min_set(base, mw, mh);
1281      }
1282    sd->vbar_visible = !sd->vbar_visible;
1283    sd->hbar_visible = !sd->hbar_visible;
1284    _smart_scrollbar_bar_visibility_adjust(sd);
1285 }
1286
1287 void
1288 elm_smart_scroller_hold_set(Evas_Object *obj, Eina_Bool hold)
1289 {
1290    API_ENTRY return;
1291    sd->hold = hold;
1292 }
1293
1294 void
1295 elm_smart_scroller_freeze_set(Evas_Object *obj, Eina_Bool freeze)
1296 {
1297    API_ENTRY return;
1298    sd->freeze = freeze;
1299    if (sd->freeze)
1300      {
1301         if (sd->down.onhold_animator)
1302           {
1303              ecore_animator_del(sd->down.onhold_animator);
1304              sd->down.onhold_animator = NULL;
1305           }
1306      }
1307    else
1308      bounce_eval(sd);
1309 }
1310
1311 void
1312 elm_smart_scroller_bounce_allow_set(Evas_Object *obj, Eina_Bool horiz, Eina_Bool vert)
1313 {
1314    API_ENTRY return;
1315    sd->bounce_horiz = horiz;
1316    sd->bounce_vert = vert;
1317 }
1318
1319 void
1320 elm_smart_scroller_bounce_allow_get(const Evas_Object *obj, Eina_Bool *horiz, Eina_Bool *vert)
1321 {
1322    API_ENTRY return;
1323    *horiz = sd->bounce_horiz;
1324    *vert = sd->bounce_vert;
1325 }
1326
1327 void
1328 elm_smart_scroller_paging_set(Evas_Object *obj, double pagerel_h, double pagerel_v, Evas_Coord pagesize_h, Evas_Coord pagesize_v)
1329 {
1330    API_ENTRY return;
1331    sd->pagerel_h = pagerel_h;
1332    sd->pagerel_v = pagerel_v;
1333    sd->pagesize_h = pagesize_h;
1334    sd->pagesize_v = pagesize_v;
1335    if (sd->child_obj) _smart_page_adjust(sd);
1336 }
1337
1338 void
1339 elm_smart_scroller_paging_get(Evas_Object *obj, double *pagerel_h, double *pagerel_v, Evas_Coord *pagesize_h, Evas_Coord *pagesize_v)
1340 {
1341    API_ENTRY return;
1342    if(pagerel_h) *pagerel_h = sd->pagerel_h;
1343    if(pagerel_v) *pagerel_v = sd->pagerel_v;
1344    if(pagesize_h) *pagesize_h = sd->pagesize_h;
1345    if(pagesize_v) *pagesize_v = sd->pagesize_v;
1346 }
1347
1348 void
1349 elm_smart_scroller_region_bring_in(Evas_Object *obj, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
1350 {
1351    Evas_Coord mx = 0, my = 0, cw = 0, ch = 0, px = 0, py = 0, nx, ny, minx = 0, miny = 0;
1352
1353    API_ENTRY return;
1354    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
1355    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
1356    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
1357    sd->pan_func.get(sd->pan_obj, &px, &py);
1358
1359    nx = px;
1360    if ((x < px) && ((x + w) < (px + (cw - mx)))) nx = x;
1361    else if ((x > px) && ((x + w) > (px + (cw - mx)))) nx = x + w - (cw - mx);
1362    ny = py;
1363    if ((y < py) && ((y + h) < (py + (ch - my)))) ny = y;
1364    else if ((y > py) && ((y + h) > (py + (ch - my)))) ny = y + h - (ch - my);
1365    sd->wx = x;
1366    sd->wy = y;
1367    sd->ww = w;
1368    sd->wh = h;
1369    if ((nx == px) && (ny == py)) return;
1370    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1371        (sd->scrollto.x.animator) || (sd->scrollto.y.animator))
1372      {
1373         _smart_anim_stop(sd->smart_obj);
1374      }
1375    if (sd->scrollto.x.animator)
1376      {
1377         ecore_animator_del(sd->scrollto.x.animator);
1378         sd->scrollto.x.animator = NULL;
1379      }
1380    if (sd->scrollto.y.animator)
1381      {
1382         ecore_animator_del(sd->scrollto.y.animator);
1383         sd->scrollto.y.animator = NULL;
1384      }
1385    if (sd->down.bounce_x_animator)
1386      {
1387         ecore_animator_del(sd->down.bounce_x_animator);
1388         sd->down.bounce_x_animator = NULL;
1389         sd->bouncemex = 0;
1390      }
1391    if (sd->down.bounce_y_animator)
1392      {
1393         ecore_animator_del(sd->down.bounce_y_animator);
1394         sd->down.bounce_y_animator = NULL;
1395         sd->bouncemey = 0;
1396      }
1397    if (sd->down.hold_animator)
1398      {
1399         ecore_animator_del(sd->down.hold_animator);
1400         sd->down.hold_animator = NULL;
1401         _smart_drag_stop(sd->smart_obj);
1402      }
1403    if (sd->down.momentum_animator)
1404      {
1405         ecore_animator_del(sd->down.momentum_animator);
1406         sd->down.momentum_animator = NULL;
1407         sd->down.bounce_x_hold = 0;
1408         sd->down.bounce_y_hold = 0;
1409         sd->down.ax = 0;
1410         sd->down.ay = 0;
1411         sd->down.pdx = 0;
1412         sd->down.pdy = 0;
1413      }
1414    x = nx;
1415    if ((x + w) > cw) x = cw - w;
1416    if (x < minx) x = minx;
1417    _smart_scrollto_x(sd, _elm_config->bring_in_scroll_friction, x);
1418    y = ny;
1419    if ((y + h) > ch) y = ch - h;
1420    if (y < miny) y = miny;
1421    _smart_scrollto_y(sd, _elm_config->bring_in_scroll_friction, y);
1422 }
1423
1424 void
1425 elm_smart_scroller_widget_set(Evas_Object *obj, Evas_Object *wid)
1426 {
1427    API_ENTRY return;
1428    sd->widget = wid;
1429 }
1430
1431 static void
1432 _elm_smart_scroller_wanted_region_set(Evas_Object *obj)
1433 {
1434    INTERNAL_ENTRY;
1435    Evas_Coord ww, wh, wx = sd->wx;
1436
1437    /* Flip to RTL cords only if init in RTL mode */
1438    if(sd->is_mirrored)
1439      wx = _elm_smart_scroller_x_mirrored_get(obj, sd->wx);
1440
1441    if (sd->ww == -1)
1442      {
1443         elm_smart_scroller_child_viewport_size_get(obj, &ww, &wh);
1444      }
1445    else
1446      {
1447         ww = sd->ww;
1448         wh = sd->wh;
1449      }
1450
1451    elm_smart_scroller_child_region_set(obj, wx, sd->wy, ww, wh);
1452 }
1453
1454 /* local subsystem functions */
1455 static void
1456 _smart_edje_drag_v_start(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1457 {
1458    Smart_Data *sd;
1459
1460    sd = data;
1461    _smart_scrollbar_read(sd);
1462    _smart_drag_start(sd->smart_obj);
1463    sd->freeze = EINA_TRUE;
1464 }
1465
1466 static void
1467 _smart_edje_drag_v_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1468 {
1469    Smart_Data *sd;
1470
1471    sd = data;
1472    _smart_scrollbar_read(sd);
1473    _smart_drag_stop(sd->smart_obj);
1474    sd->freeze = EINA_FALSE;
1475 }
1476
1477 static void
1478 _smart_edje_drag_v(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1479 {
1480    Smart_Data *sd;
1481
1482    sd = data;
1483    _smart_scrollbar_read(sd);
1484 }
1485
1486 static void
1487 _smart_edje_drag_h_start(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1488 {
1489    Smart_Data *sd;
1490
1491    sd = data;
1492    _smart_scrollbar_read(sd);
1493    _smart_drag_start(sd->smart_obj);
1494    sd->freeze = EINA_TRUE;
1495 }
1496
1497 static void
1498 _smart_edje_drag_h_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1499 {
1500    Smart_Data *sd;
1501
1502    sd = data;
1503    _smart_scrollbar_read(sd);
1504    _smart_drag_stop(sd->smart_obj);
1505    sd->freeze = EINA_FALSE;
1506 }
1507
1508 static void
1509 _smart_edje_drag_h(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1510 {
1511    Smart_Data *sd;
1512
1513    sd = data;
1514    _smart_scrollbar_read(sd);
1515 }
1516
1517 static void
1518 _smart_child_del_hook(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
1519 {
1520    Smart_Data *sd;
1521
1522    sd = data;
1523    sd->child_obj = NULL;
1524    _smart_scrollbar_size_adjust(sd);
1525    _smart_scrollbar_reset(sd);
1526 }
1527
1528 static void
1529 _smart_pan_changed_hook(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
1530 {
1531    Evas_Coord w, h;
1532    Smart_Data *sd;
1533
1534    sd = data;
1535    sd->pan_func.child_size_get(sd->pan_obj, &w, &h);
1536    if ((w != sd->child.w) || (h != sd->child.h))
1537      {
1538         sd->child.w = w;
1539         sd->child.h = h;
1540         _smart_scrollbar_size_adjust(sd);
1541         evas_object_size_hint_min_set(sd->smart_obj, sd->child.w, sd->child.h);
1542         _elm_smart_scroller_wanted_region_set(sd->smart_obj);
1543      }
1544 }
1545
1546 static void
1547 _smart_pan_pan_changed_hook(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
1548 {
1549    Smart_Data *sd;
1550
1551    sd = data;
1552    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1553        (sd->scrollto.x.animator) || (sd->scrollto.y.animator))
1554      {
1555         _smart_anim_stop(sd->smart_obj);
1556      }
1557    if (sd->scrollto.x.animator)
1558      {
1559         ecore_animator_del(sd->scrollto.x.animator);
1560         sd->scrollto.x.animator = NULL;
1561      }
1562    if (sd->scrollto.y.animator)
1563      {
1564         ecore_animator_del(sd->scrollto.y.animator);
1565         sd->scrollto.y.animator = NULL;
1566      }
1567    if (sd->down.bounce_x_animator)
1568      {
1569         ecore_animator_del(sd->down.bounce_x_animator);
1570         sd->down.bounce_x_animator = NULL;
1571         sd->bouncemex = 0;
1572      }
1573    if (sd->down.bounce_y_animator)
1574      {
1575         ecore_animator_del(sd->down.bounce_y_animator);
1576         sd->down.bounce_y_animator = NULL;
1577         sd->bouncemey = 0;
1578      }
1579    _elm_smart_scroller_wanted_region_set(sd->smart_obj);
1580 }
1581
1582 static void
1583 _smart_event_wheel(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
1584 {
1585    Evas_Event_Mouse_Wheel *ev;
1586    Smart_Data *sd;
1587    Evas_Coord x = 0, y = 0;
1588
1589    sd = data;
1590    ev = event_info;
1591    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
1592    if ((evas_key_modifier_is_set(ev->modifiers, "Control")) ||
1593        (evas_key_modifier_is_set(ev->modifiers, "Alt")) ||
1594        (evas_key_modifier_is_set(ev->modifiers, "Shift")) ||
1595        (evas_key_modifier_is_set(ev->modifiers, "Meta")) ||
1596        (evas_key_modifier_is_set(ev->modifiers, "Hyper")) ||
1597        (evas_key_modifier_is_set(ev->modifiers, "Super")))
1598      return;
1599    elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1600    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1601        (sd->scrollto.x.animator) || (sd->scrollto.y.animator))
1602      {
1603         _smart_anim_stop(sd->smart_obj);
1604      }
1605    if (sd->scrollto.x.animator)
1606      {
1607         ecore_animator_del(sd->scrollto.x.animator);
1608         sd->scrollto.x.animator = NULL;
1609      }
1610    if (sd->scrollto.y.animator)
1611      {
1612         ecore_animator_del(sd->scrollto.y.animator);
1613         sd->scrollto.y.animator = NULL;
1614      }
1615    if (sd->down.bounce_x_animator)
1616      {
1617         ecore_animator_del(sd->down.bounce_x_animator);
1618         sd->down.bounce_x_animator = NULL;
1619         sd->bouncemex = 0;
1620      }
1621    if (sd->down.bounce_y_animator)
1622      {
1623         ecore_animator_del(sd->down.bounce_y_animator);
1624         sd->down.bounce_y_animator = NULL;
1625         sd->bouncemey = 0;
1626      }
1627    if (!ev->direction)
1628      y += ev->z * sd->step.y;
1629    else if (ev->direction == 1)
1630      x += ev->z * sd->step.x;
1631
1632    if ((!sd->hold) && (!sd->freeze))
1633      {
1634         _update_wanted_coordinates(sd, x, y);
1635         elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
1636      }
1637 }
1638
1639 static void
1640 _smart_event_mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
1641 {
1642    Evas_Event_Mouse_Down *ev;
1643    Smart_Data *sd;
1644    Evas_Coord x = 0, y = 0;
1645
1646    sd = data;
1647    ev = event_info;
1648    //   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
1649    if (_elm_config->thumbscroll_enable)
1650      {
1651         sd->down.hold = 0;
1652         if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1653             (sd->down.momentum_animator) || (sd->scrollto.x.animator) ||
1654             (sd->scrollto.y.animator))
1655           {
1656              ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL | EVAS_EVENT_FLAG_ON_HOLD;
1657              sd->down.scroll = 1;
1658              sd->down.hold = 1;
1659              _smart_anim_stop(sd->smart_obj);
1660           }
1661         if (sd->scrollto.x.animator)
1662           {
1663              ecore_animator_del(sd->scrollto.x.animator);
1664              sd->scrollto.x.animator = NULL;
1665           }
1666         if (sd->scrollto.y.animator)
1667           {
1668              ecore_animator_del(sd->scrollto.y.animator);
1669              sd->scrollto.y.animator = NULL;
1670           }
1671         if (sd->down.bounce_x_animator)
1672           {
1673              ecore_animator_del(sd->down.bounce_x_animator);
1674              sd->down.bounce_x_animator = NULL;
1675              sd->bouncemex = 0;
1676           }
1677         if (sd->down.bounce_y_animator)
1678           {
1679              ecore_animator_del(sd->down.bounce_y_animator);
1680              sd->down.bounce_y_animator = NULL;
1681              sd->bouncemey = 0;
1682           }
1683         if (sd->down.hold_animator)
1684           {
1685              ecore_animator_del(sd->down.hold_animator);
1686              sd->down.hold_animator = NULL;
1687              _smart_drag_stop(sd->smart_obj);
1688           }
1689         if (sd->down.momentum_animator)
1690           {
1691              ecore_animator_del(sd->down.momentum_animator);
1692              sd->down.momentum_animator = NULL;
1693              sd->down.bounce_x_hold = 0;
1694              sd->down.bounce_y_hold = 0;
1695              sd->down.ax = 0;
1696              sd->down.ay = 0;
1697           }
1698         if (ev->button == 1)
1699           {
1700              sd->down.now = 1;
1701              sd->down.dragged = 0;
1702              sd->down.dir_x = 0;
1703              sd->down.dir_y = 0;
1704              sd->down.x = ev->canvas.x;
1705              sd->down.y = ev->canvas.y;
1706              elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1707              sd->down.sx = x;
1708              sd->down.sy = y;
1709              sd->down.locked = 0;
1710              memset(&(sd->down.history[0]), 0, sizeof(sd->down.history[0]) * 20);
1711 #ifdef EVTIME
1712              sd->down.history[0].timestamp = ev->timestamp / 1000.0;
1713 #else
1714              sd->down.history[0].timestamp = ecore_loop_time_get();
1715 #endif
1716              sd->down.history[0].x = ev->canvas.x;
1717              sd->down.history[0].y = ev->canvas.y;
1718           }
1719         sd->down.dragged_began = 0;
1720         sd->down.hold_parent = 0;
1721         sd->down.cancelled = 0;
1722         if(sd->hold || sd->freeze)
1723            sd->down.want_reset = 1;
1724         else
1725            sd->down.want_reset = 0;
1726      }
1727 }
1728
1729 static Eina_Bool
1730 _smart_hold_animator(void *data)
1731 {
1732    Smart_Data *sd = data;
1733    Evas_Coord ox, oy;
1734
1735    elm_smart_scroller_child_pos_get(sd->smart_obj, &ox, &oy);
1736    if (sd->down.dir_x)
1737      {
1738         if ((!sd->widget) ||
1739             (!elm_widget_drag_child_locked_x_get(sd->widget)))
1740           {
1741              ox = sd->down.hold_x;
1742           }
1743      }
1744    if (sd->down.dir_y)
1745      {
1746         if ((!sd->widget) ||
1747             (!elm_widget_drag_child_locked_y_get(sd->widget)))
1748           {
1749              oy = sd->down.hold_y;
1750           }
1751      }
1752    elm_smart_scroller_child_pos_set(sd->smart_obj, ox, oy);
1753    return ECORE_CALLBACK_RENEW;
1754 }
1755
1756 static Eina_Bool
1757 _smart_event_post_up(void *data, Evas *e __UNUSED__)
1758 {
1759    Smart_Data *sd = data;
1760    if (sd->widget)
1761      {
1762         if (sd->down.dragged)
1763           {
1764              elm_widget_drag_lock_x_set(sd->widget, 0);
1765              elm_widget_drag_lock_y_set(sd->widget, 0);
1766           }
1767      }
1768    return EINA_TRUE;
1769 }
1770
1771 static void
1772 _smart_event_mouse_up(void *data, Evas *e, Evas_Object *obj __UNUSED__, void *event_info)
1773 {
1774    Evas_Event_Mouse_Down *ev;
1775    Smart_Data *sd;
1776    Evas_Coord x = 0, y = 0, ox = 0, oy = 0;
1777
1778    sd = data;
1779    ev = event_info;
1780    sd->down.hold_parent = 0;
1781    //   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
1782    evas_post_event_callback_push(e, _smart_event_post_up, sd);
1783    // FIXME: respect elm_widget_scroll_hold_get of parent container
1784    if (_elm_config->thumbscroll_enable)
1785      {
1786         if (ev->button == 1)
1787           {
1788              if (sd->down.onhold_animator)
1789                {
1790                   ecore_animator_del(sd->down.onhold_animator);
1791                   sd->down.onhold_animator = NULL;
1792                }
1793              x = ev->canvas.x - sd->down.x;
1794              y = ev->canvas.y - sd->down.y;
1795              if (sd->down.dragged)
1796                {
1797                   _smart_drag_stop(sd->smart_obj);
1798                   if ((!sd->hold) && (!sd->freeze))
1799                     {
1800                        double t, at, dt;
1801                        int i;
1802                        Evas_Coord ax, ay, dx, dy, vel;
1803
1804 #ifdef EVTIME
1805                        t = ev->timestamp / 1000.0;
1806 #else
1807                        t = ecore_loop_time_get();
1808 #endif
1809                        ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
1810                        ax = ev->canvas.x;
1811                        ay = ev->canvas.y;
1812                        at = 0.0;
1813 #ifdef SCROLLDBG
1814                        printf("------ %i %i\n", ev->canvas.x, ev->canvas.y);
1815 #endif
1816                        for (i = 0; i < 20; i++)
1817                          {
1818                             dt = t - sd->down.history[i].timestamp;
1819                             if (dt > 0.2) break;
1820 #ifdef SCROLLDBG
1821                             printf("H: %i %i @ %1.3f\n",
1822                                    sd->down.history[i].x,
1823                                    sd->down.history[i].y, dt);
1824 #endif
1825                             at += dt;
1826                             ax += sd->down.history[i].x;
1827                             ay += sd->down.history[i].y;
1828                          }
1829                        ax /= (i + 1);
1830                        ay /= (i + 1);
1831                        at /= (i + 1);
1832                        at *= 4.0;
1833                        dx = ev->canvas.x - ax;
1834                        dy = ev->canvas.y - ay;
1835                        if (at > 0)
1836                          {
1837                             vel = sqrt((dx * dx) + (dy * dy)) / at;
1838                             if ((_elm_config->thumbscroll_friction > 0.0) &&
1839                                 (vel > _elm_config->thumbscroll_momentum_threshold))
1840                               {
1841                                  sd->down.dx = ((double)dx / at);
1842                                  sd->down.dy = ((double)dy / at);
1843                                  if (((sd->down.dx > 0) && (sd->down.pdx > 0)) ||
1844                                      ((sd->down.dx < 0) && (sd->down.pdx < 0)) ||
1845                                      ((sd->down.dy > 0) && (sd->down.pdy > 0)) ||
1846                                      ((sd->down.dy < 0) && (sd->down.pdy < 0)))
1847                                   {
1848                                     double t = ecore_loop_time_get();
1849                                     double dt = t - sd->down.anim_start;
1850
1851                                     if (dt < 0.0) dt = 0.0;
1852                                     else if (dt > _elm_config->thumbscroll_friction)
1853                                       dt = _elm_config->thumbscroll_friction;
1854                                     sd->down.extra_time = _elm_config->thumbscroll_friction - dt;
1855                                   }
1856                                  if (((sd->down.dx > 0) && (sd->down.pdx > 0)) ||
1857                                      ((sd->down.dx < 0) && (sd->down.pdx < 0)))
1858                                    sd->down.dx += (double)sd->down.pdx * 1.5; // FIXME: * 1.5 - probably should be config
1859                                  if (((sd->down.dy > 0) && (sd->down.pdy > 0)) ||
1860                                      ((sd->down.dy < 0) && (sd->down.pdy < 0)))
1861                                    sd->down.dy += (double)sd->down.pdy * 1.5; // FIXME: * 1.5 - probably should be config
1862                                  else
1863                                    sd->down.extra_time = 0.0;
1864                                  sd->down.pdx = sd->down.dx;
1865                                  sd->down.pdy = sd->down.dy;
1866                                  ox = -sd->down.dx;
1867                                  oy = -sd->down.dy;
1868                                  if (!_smart_do_page(sd))
1869                                    {
1870                                       if (!sd->down.momentum_animator && !sd->momentum_animator_disabled)
1871                                         {
1872                                            sd->down.momentum_animator = ecore_animator_add(_smart_momentum_animator, sd);
1873                                            ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1874                                            _smart_anim_start(sd->smart_obj);
1875                                         }
1876                                       sd->down.anim_start = ecore_loop_time_get();
1877                                       elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1878                                       sd->down.sx = x;
1879                                       sd->down.sy = y;
1880                                       sd->down.b0x = 0;
1881                                       sd->down.b0y = 0;
1882                                    }
1883                               }
1884                          }
1885                        if (sd->down.hold_animator)
1886                          {
1887                             ecore_animator_del(sd->down.hold_animator);
1888                             sd->down.hold_animator = NULL;
1889                          }
1890                     }
1891                   else
1892                     {
1893                        sd->down.pdx = 0;
1894                        sd->down.pdy = 0;
1895                     }
1896                   evas_event_feed_hold(e, 0, ev->timestamp, ev->data);
1897                   if (_smart_do_page(sd))
1898                     {
1899                        Evas_Coord pgx, pgy;
1900
1901                        elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1902                        if ((!sd->widget) ||
1903                            (!elm_widget_drag_child_locked_x_get(sd->widget)))
1904                          {
1905                             pgx = _smart_page_x_get(sd, ox);
1906                             if (pgx != x)
1907                               {
1908                                  ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1909                                  _smart_scrollto_x(sd, _elm_config->page_scroll_friction, pgx);
1910                               }
1911                          }
1912                        if ((!sd->widget) ||
1913                            (!elm_widget_drag_child_locked_y_get(sd->widget)))
1914                          {
1915                             pgy = _smart_page_y_get(sd, oy);
1916                             if (pgy != y)
1917                               {
1918                                  ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1919                                  _smart_scrollto_y(sd, _elm_config->page_scroll_friction, pgy);
1920                               }
1921                          }
1922                     }
1923                }
1924              else
1925                {
1926                   sd->down.pdx = 0;
1927                   sd->down.pdy = 0;
1928                   if (_smart_do_page(sd))
1929                     {
1930                        Evas_Coord pgx, pgy;
1931
1932                        elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1933                        if ((!sd->widget) ||
1934                            (!elm_widget_drag_child_locked_x_get(sd->widget)))
1935                          {
1936                             pgx = _smart_page_x_get(sd, ox);
1937                             if (pgx != x) _smart_scrollto_x(sd, _elm_config->page_scroll_friction, pgx);
1938                          }
1939                        if ((!sd->widget) ||
1940                            (!elm_widget_drag_child_locked_y_get(sd->widget)))
1941                          {
1942                             pgy = _smart_page_y_get(sd, oy);
1943                             if (pgy != y) _smart_scrollto_y(sd, _elm_config->page_scroll_friction, pgy);
1944                          }
1945                     }
1946                   if (sd->down.hold_animator)
1947                     {
1948                        ecore_animator_del(sd->down.hold_animator);
1949                        sd->down.hold_animator = NULL;
1950                     }
1951                }
1952              if (sd->down.scroll)
1953                {
1954                   ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1955                   sd->down.scroll = 0;
1956                }
1957              if (sd->down.hold)
1958                {
1959                   ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
1960                   sd->down.hold = 0;
1961                }
1962              sd->down.dragged_began = 0;
1963              sd->down.dir_x = 0;
1964              sd->down.dir_y = 0;
1965              sd->down.want_dragged = 0;
1966              sd->down.dragged = 0;
1967              sd->down.now = 0;
1968              elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1969              elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
1970              _update_wanted_coordinates(sd, x, y);
1971
1972              if (!_smart_do_page(sd))
1973                bounce_eval(sd);
1974           }
1975      }
1976 }
1977
1978 static Eina_Bool
1979 _smart_onhold_animator(void *data)
1980 {
1981    Smart_Data *sd;
1982    double t, td;
1983    double vx, vy;
1984    Evas_Coord x, y, ox, oy;
1985
1986    sd = data;
1987    t = ecore_loop_time_get();
1988    if (sd->down.onhold_tlast > 0.0)
1989      {
1990         td = t - sd->down.onhold_tlast;
1991         vx = sd->down.onhold_vx * td * (double)_elm_config->thumbscroll_threshold * 2.0;
1992         vy = sd->down.onhold_vy * td * (double)_elm_config->thumbscroll_threshold * 2.0;
1993         elm_smart_scroller_child_pos_get(sd->smart_obj, &ox, &oy);
1994         x = ox;
1995         y = oy;
1996
1997         if (sd->down.dir_x)
1998           {
1999              if ((!sd->widget) ||
2000                  (!elm_widget_drag_child_locked_x_get(sd->widget)))
2001                {
2002                   sd->down.onhold_vxe += vx;
2003                   x = ox + (int)sd->down.onhold_vxe;
2004                   sd->down.onhold_vxe -= (int)sd->down.onhold_vxe;
2005                }
2006           }
2007
2008         if (sd->down.dir_y)
2009           {
2010              if ((!sd->widget) ||
2011                  (!elm_widget_drag_child_locked_y_get(sd->widget)))
2012                {
2013                   sd->down.onhold_vye += vy;
2014                   y = oy + (int)sd->down.onhold_vye;
2015                   sd->down.onhold_vye -= (int)sd->down.onhold_vye;
2016                }
2017           }
2018
2019         elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
2020      }
2021    sd->down.onhold_tlast = t;
2022    return ECORE_CALLBACK_RENEW;
2023 }
2024
2025 static Eina_Bool
2026 _smart_event_post_move(void *data, Evas *e __UNUSED__)
2027 {
2028    Smart_Data *sd = data;
2029
2030    if (sd->down.want_dragged)
2031      {
2032         int start = 0;
2033
2034         if (sd->down.hold_parent)
2035           {
2036              if ((sd->down.dir_x) && !can_scroll(sd, sd->down.hdir))
2037                {
2038                   sd->down.dir_x = 0;
2039                }
2040              if ((sd->down.dir_y) && !can_scroll(sd, sd->down.vdir))
2041                {
2042                   sd->down.dir_y = 0;
2043                }
2044           }
2045         if (sd->down.dir_x)
2046           {
2047              if ((!sd->widget) ||
2048                  (!elm_widget_drag_child_locked_x_get(sd->widget)))
2049                {
2050                   sd->down.want_dragged = 0;
2051                   sd->down.dragged = 1;
2052                   if (sd->widget)
2053                     {
2054                        elm_widget_drag_lock_x_set(sd->widget, 1);
2055                     }
2056                   start = 1;
2057                }
2058              else
2059                sd->down.dir_x = 0;
2060           }
2061         if (sd->down.dir_y)
2062           {
2063              if ((!sd->widget) ||
2064                  (!elm_widget_drag_child_locked_y_get(sd->widget)))
2065                {
2066                   sd->down.want_dragged = 0;
2067                   sd->down.dragged = 1;
2068                   if (sd->widget)
2069                     {
2070                        elm_widget_drag_lock_y_set(sd->widget, 1);
2071                     }
2072                   start = 1;
2073                }
2074              else
2075                sd->down.dir_y = 0;
2076           }
2077         if ((!sd->down.dir_x) && (!sd->down.dir_y))
2078           {
2079              sd->down.cancelled = 1;
2080           }
2081         if (start) _smart_drag_start(sd->smart_obj);
2082      }
2083    return EINA_TRUE;
2084 }
2085
2086 static void
2087 _smart_event_mouse_move(void *data, Evas *e, Evas_Object *obj __UNUSED__, void *event_info)
2088 {
2089    Evas_Event_Mouse_Move *ev;
2090    Smart_Data *sd;
2091    Evas_Coord x = 0, y = 0;
2092
2093    sd = data;
2094    ev = event_info;
2095    //   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
2096    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) sd->down.hold_parent = 1;
2097    evas_post_event_callback_push(e, _smart_event_post_move, sd);
2098    // FIXME: respect elm_widget_scroll_hold_get of parent container
2099    if (_elm_config->thumbscroll_enable)
2100      {
2101         if (sd->down.now)
2102           {
2103              int dodir = 0;
2104
2105 #ifdef SCROLLDBG
2106              printf("::: %i %i\n", ev->cur.canvas.x, ev->cur.canvas.y);
2107 #endif
2108              memmove(&(sd->down.history[1]), &(sd->down.history[0]),
2109                      sizeof(sd->down.history[0]) * 19);
2110 #ifdef EVTIME
2111              sd->down.history[0].timestamp = ev->timestamp / 1000.0;
2112 #else
2113              sd->down.history[0].timestamp = ecore_loop_time_get();
2114 #endif
2115              sd->down.history[0].x = ev->cur.canvas.x;
2116              sd->down.history[0].y = ev->cur.canvas.y;
2117
2118              if (!sd->down.dragged_began)
2119                {
2120                   x = ev->cur.canvas.x - sd->down.x;
2121                   y = ev->cur.canvas.y - sd->down.y;
2122
2123                   sd->down.hdir = -1;
2124                   sd->down.vdir = -1;
2125
2126                   if      (x > 0) sd->down.hdir = LEFT;
2127                   else if (x < 0) sd->down.hdir = RIGHT;
2128                   if      (y > 0) sd->down.vdir = UP;
2129                   else if (y < 0) sd->down.vdir = DOWN;
2130
2131                   if (x < 0) x = -x;
2132                   if (y < 0) y = -y;
2133
2134                   if ((sd->one_dir_at_a_time) &&
2135                       (!((sd->down.dir_x) || (sd->down.dir_y))))
2136                     {
2137                        if (x > _elm_config->thumbscroll_threshold)
2138                          {
2139                             if (x > (y * 2))
2140                               {
2141                                  sd->down.dir_x = 1;
2142                                  sd->down.dir_y = 0;
2143                                  dodir++;
2144                               }
2145                          }
2146                        if (y > _elm_config->thumbscroll_threshold)
2147                          {
2148                             if (y > (x * 2))
2149                               {
2150                                  sd->down.dir_x = 0;
2151                                  sd->down.dir_y = 1;
2152                                  dodir++;
2153                               }
2154                          }
2155                        if (!dodir)
2156                          {
2157                             sd->down.dir_x = 1;
2158                             sd->down.dir_y = 1;
2159                          }
2160                     }
2161                   else
2162                     {
2163                        //                       can_scroll(sd, LEFT);
2164                        //                       can_scroll(sd, RIGHT);
2165                        //                       can_scroll(sd, UP);
2166                        //                       can_scroll(sd, DOWN);
2167                        sd->down.dir_x = 1;
2168                        sd->down.dir_y = 1;
2169                     }
2170                }
2171              if ((!sd->hold) && (!sd->freeze))
2172                {
2173                   if ((sd->down.dragged) ||
2174                       (((x * x) + (y * y)) >
2175                        (_elm_config->thumbscroll_threshold *
2176                         _elm_config->thumbscroll_threshold)))
2177                     {
2178                        sd->down.dragged_began = 1;
2179                        if (!sd->down.dragged)
2180                          {
2181                             sd->down.want_dragged = 1;
2182                             ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2183                             //                            evas_event_feed_hold(e, 1, ev->timestamp, ev->data);
2184                             //                            _smart_drag_start(sd->smart_obj);
2185                          }
2186                        if (sd->down.dragged)
2187                          {
2188                             ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2189                          }
2190                        //                       ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2191                        //                       sd->down.dragged = 1;
2192                        if (sd->down.dir_x)
2193                          x = sd->down.sx - (ev->cur.canvas.x - sd->down.x);
2194                        else
2195                          x = sd->down.sx;
2196                        if (sd->down.dir_y)
2197                          y = sd->down.sy - (ev->cur.canvas.y - sd->down.y);
2198                        else
2199                          y = sd->down.sy;
2200                        if(sd->down.want_reset)
2201                          {
2202                             sd->down.x = ev->cur.canvas.x;
2203                             sd->down.y = ev->cur.canvas.y;
2204                             sd->down.want_reset = 0;
2205                          }
2206                        if ((sd->down.dir_x) || (sd->down.dir_y))
2207                          {
2208                             if (!sd->down.locked)
2209                               {
2210                                  sd->down.locked_x = x;
2211                                  sd->down.locked_y = y;
2212                                  sd->down.locked = 1;
2213                               }
2214                             if (!((sd->down.dir_x) && (sd->down.dir_y)))
2215                               {
2216                                  if (sd->down.dir_x) y = sd->down.locked_y;
2217                                  else x = sd->down.locked_x;
2218                               }
2219                          }
2220                        if (_elm_config->thumbscroll_border_friction > 0.0)
2221                          {
2222                             Evas_Coord minx, miny;
2223                             sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2224                             if (y < miny)
2225                               y += (miny - y) *
2226                                  _elm_config->thumbscroll_border_friction;
2227                             else if (sd->child.h <= sd->h)
2228                               y += (sd->down.sy - y) *
2229                                  _elm_config->thumbscroll_border_friction;
2230                             else if ((sd->child.h - sd->h + miny) < y)
2231                               y += (sd->child.h - sd->h + miny - y) *
2232                                  _elm_config->thumbscroll_border_friction;
2233                             if (x < minx)
2234                               x += (minx - x) *
2235                                  _elm_config->thumbscroll_border_friction;
2236                             else if (sd->child.w <= sd->w)
2237                               x += (sd->down.sx - x) *
2238                                  _elm_config->thumbscroll_border_friction;
2239                             else if ((sd->child.w - sd->w + minx) < x)
2240                               x += (sd->child.w - sd->w + minx - x) *
2241                                  _elm_config->thumbscroll_border_friction;
2242                          }
2243
2244                        sd->down.hold_x = x;
2245                        sd->down.hold_y = y;
2246                        if (!sd->down.hold_animator)
2247                          sd->down.hold_animator =
2248                             ecore_animator_add(_smart_hold_animator, sd);
2249                        //                       printf("a %i %i\n", sd->down.hold_x, sd->down.hold_y);
2250                        //                       _smart_onhold_animator(sd);
2251                        //                       elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
2252                     }
2253                   else
2254                     {
2255                        if (sd->down.dragged_began)
2256                          {
2257                             ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2258                             if (!sd->down.hold)
2259                               {
2260                                  sd->down.hold = 1;
2261                                  evas_event_feed_hold(e, 1, ev->timestamp, ev->data);
2262                               }
2263                          }
2264                     }
2265                }
2266              else if (!sd->freeze)
2267                {
2268                   Evas_Coord ex, ey, ew, eh;
2269                   double vx = 0.0, vy = 0.0;
2270
2271                   evas_object_geometry_get(sd->event_obj, &ex, &ey, &ew, &eh);
2272                   x = ev->cur.canvas.x - ex;
2273                   y = ev->cur.canvas.y - ey;
2274                   if (x < _elm_config->thumbscroll_threshold)
2275                     {
2276                        if (_elm_config->thumbscroll_threshold > 0.0)
2277                          vx = -(double)(_elm_config->thumbscroll_threshold - x) /
2278                             _elm_config->thumbscroll_threshold;
2279                        else
2280                          vx = -1.0;
2281                     }
2282                   else if (x > (ew - _elm_config->thumbscroll_threshold))
2283                     {
2284                        if (_elm_config->thumbscroll_threshold > 0.0)
2285                          vx = (double)(_elm_config->thumbscroll_threshold - (ew - x)) /
2286                             _elm_config->thumbscroll_threshold;
2287                        else
2288                          vx = 1.0;
2289                     }
2290                   if (y < _elm_config->thumbscroll_threshold)
2291                     {
2292                        if (_elm_config->thumbscroll_threshold > 0.0)
2293                          vy = -(double)(_elm_config->thumbscroll_threshold - y) /
2294                             _elm_config->thumbscroll_threshold;
2295                        else
2296                          vy = -1.0;
2297                     }
2298                   else if (y > (eh - _elm_config->thumbscroll_threshold))
2299                     {
2300                        if (_elm_config->thumbscroll_threshold > 0.0)
2301                          vy = (double)(_elm_config->thumbscroll_threshold - (eh - y)) /
2302                             _elm_config->thumbscroll_threshold;
2303                        else
2304                          vy = 1.0;
2305                     }
2306                   if ((vx != 0.0) || (vy != 0.0))
2307                     {
2308                        sd->down.onhold_vx = vx;
2309                        sd->down.onhold_vy = vy;
2310                        if (!sd->down.onhold_animator)
2311                          {
2312                             sd->down.onhold_vxe = 0.0;
2313                             sd->down.onhold_vye = 0.0;
2314                             sd->down.onhold_tlast = 0.0;
2315                             sd->down.onhold_animator = ecore_animator_add(_smart_onhold_animator, sd);
2316                          }
2317                        //                       printf("b %i %i\n", sd->down.hold_x, sd->down.hold_y);
2318                     }
2319                   else
2320                     {
2321                        if (sd->down.onhold_animator)
2322                          {
2323                             ecore_animator_del(sd->down.onhold_animator);
2324                             sd->down.onhold_animator = NULL;
2325                          }
2326                     }
2327                }
2328           }
2329      }
2330 }
2331
2332 static void
2333 _smart_scrollbar_read(Smart_Data *sd)
2334 {
2335    Evas_Coord x, y, mx = 0, my = 0, px, py, minx = 0, miny = 0;
2336    double vx, vy;
2337
2338    edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.vbar", NULL, &vy);
2339    edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.hbar", &vx, NULL);
2340    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
2341    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2342    x = vx * (double)mx + minx;
2343    y = vy * (double)my + miny;
2344    sd->pan_func.get(sd->pan_obj, &px, &py);
2345    sd->pan_func.set(sd->pan_obj, x, y);
2346    if ((px != x) || (py != y))
2347      edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2348 }
2349
2350 static void
2351 _smart_scrollbar_reset(Smart_Data *sd)
2352 {
2353    Evas_Coord px = 0, py = 0, minx = 0, miny = 0;
2354
2355    edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.vbar", 0.0, 0.0);
2356    edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.hbar", 0.0, 0.0);
2357    if ((!sd->child_obj) && (!sd->extern_pan))
2358      {
2359         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.vbar", 1.0, 1.0);
2360         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.hbar", 1.0, 1.0);
2361      }
2362    if (sd->pan_obj)
2363      {
2364         sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2365         sd->pan_func.get(sd->pan_obj, &px, &py);
2366         sd->pan_func.set(sd->pan_obj, minx, miny);
2367      }
2368    if ((px != minx) || (py != miny))
2369      edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2370 }
2371
2372 static int
2373 _smart_scrollbar_bar_v_visibility_adjust(Smart_Data *sd)
2374 {
2375    int scroll_v_vis_change = 0;
2376    Evas_Coord h, vw = 0, vh = 0;
2377
2378    h = sd->child.h;
2379    if (sd->pan_obj)
2380      evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
2381    if (sd->vbar_visible)
2382      {
2383         if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2384           {
2385              if ((sd->child_obj) || (sd->extern_pan))
2386                {
2387                   if (h <= vh)
2388                     {
2389                        scroll_v_vis_change = 1;
2390                        sd->vbar_visible = 0;
2391                     }
2392                }
2393              else
2394                {
2395                   scroll_v_vis_change = 1;
2396                   sd->vbar_visible = 0;
2397                }
2398           }
2399         else if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
2400           {
2401              scroll_v_vis_change = 1;
2402              sd->vbar_visible = 0;
2403           }
2404      }
2405    else
2406      {
2407         if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2408           {
2409              if ((sd->child_obj) || (sd->extern_pan))
2410                {
2411                   if (h > vh)
2412                     {
2413                        scroll_v_vis_change = 1;
2414                        sd->vbar_visible = 1;
2415                     }
2416                }
2417           }
2418         else if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
2419           {
2420              scroll_v_vis_change = 1;
2421              sd->vbar_visible = 1;
2422           }
2423      }
2424    if (scroll_v_vis_change)
2425      {
2426         if (sd->vbar_flags != ELM_SMART_SCROLLER_POLICY_OFF)
2427           {
2428              if (sd->vbar_visible)
2429                edje_object_signal_emit(sd->edje_obj, "elm,action,show,vbar", "elm");
2430              else
2431                edje_object_signal_emit(sd->edje_obj, "elm,action,hide,vbar", "elm");
2432              edje_object_message_signal_process(sd->edje_obj);
2433              _smart_scrollbar_size_adjust(sd);
2434           }
2435         else
2436           edje_object_signal_emit(sd->edje_obj, "elm,action,hide,vbar", "elm");
2437      }
2438    return scroll_v_vis_change;
2439 }
2440
2441 static int
2442 _smart_scrollbar_bar_h_visibility_adjust(Smart_Data *sd)
2443 {
2444    int scroll_h_vis_change = 0;
2445    Evas_Coord w, vw = 0, vh = 0;
2446
2447    w = sd->child.w;
2448    if (sd->pan_obj)
2449      evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
2450    if (sd->hbar_visible)
2451      {
2452         if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2453           {
2454              if ((sd->child_obj) || (sd->extern_pan))
2455                {
2456                   if (w <= vw)
2457                     {
2458                        scroll_h_vis_change = 1;
2459                        sd->hbar_visible = 0;
2460                     }
2461                }
2462              else
2463                {
2464                   scroll_h_vis_change = 1;
2465                   sd->hbar_visible = 0;
2466                }
2467           }
2468         else if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
2469           {
2470              scroll_h_vis_change = 1;
2471              sd->hbar_visible = 0;
2472           }
2473      }
2474    else
2475      {
2476         if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2477           {
2478              if ((sd->child_obj) || (sd->extern_pan))
2479                {
2480                   if (w > vw)
2481                     {
2482                        scroll_h_vis_change = 1;
2483                        sd->hbar_visible = 1;
2484                     }
2485                }
2486           }
2487         else if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
2488           {
2489              scroll_h_vis_change = 1;
2490              sd->hbar_visible = 1;
2491           }
2492      }
2493    if (scroll_h_vis_change)
2494      {
2495         if (sd->hbar_flags != ELM_SMART_SCROLLER_POLICY_OFF)
2496           {
2497              if (sd->hbar_visible)
2498                edje_object_signal_emit(sd->edje_obj, "elm,action,show,hbar", "elm");
2499              else
2500                edje_object_signal_emit(sd->edje_obj, "elm,action,hide,hbar", "elm");
2501              edje_object_message_signal_process(sd->edje_obj);
2502              _smart_scrollbar_size_adjust(sd);
2503           }
2504         else
2505           edje_object_signal_emit(sd->edje_obj, "elm,action,hide,hbar", "elm");
2506         _smart_scrollbar_size_adjust(sd);
2507      }
2508    return scroll_h_vis_change;
2509 }
2510
2511 static void
2512 _smart_scrollbar_bar_visibility_adjust(Smart_Data *sd)
2513 {
2514    int changed = 0;
2515
2516    changed |= _smart_scrollbar_bar_h_visibility_adjust(sd);
2517    changed |= _smart_scrollbar_bar_v_visibility_adjust(sd);
2518    if (changed)
2519      {
2520         _smart_scrollbar_bar_h_visibility_adjust(sd);
2521         _smart_scrollbar_bar_v_visibility_adjust(sd);
2522      }
2523 }
2524
2525 static void
2526 _smart_scrollbar_size_adjust(Smart_Data *sd)
2527 {
2528    if ((sd->child_obj) || (sd->extern_pan))
2529      {
2530         Evas_Coord x, y, w, h, mx = 0, my = 0, vw = 0, vh = 0, px, py, minx = 0, miny = 0;
2531         double vx, vy, size;
2532
2533         edje_object_part_geometry_get(sd->edje_obj, "elm.swallow.content",
2534                                       NULL, NULL, &vw, &vh);
2535         w = sd->child.w;
2536         if (w < 1) w = 1;
2537         size = (double)vw / (double)w;
2538         if (size > 1.0)
2539           {
2540              size = 1.0;
2541              edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.hbar", 0.0, 0.0);
2542           }
2543         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.hbar", size, 1.0);
2544
2545         h = sd->child.h;
2546         if (h < 1) h = 1;
2547         size = (double)vh / (double)h;
2548         if (size > 1.0)
2549           {
2550              size = 1.0;
2551              edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.vbar", 0.0, 0.0);
2552           }
2553         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.vbar", 1.0, size);
2554
2555         edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.hbar", &vx, NULL);
2556         edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.vbar", NULL, &vy);
2557         sd->pan_func.max_get(sd->pan_obj, &mx, &my);
2558         sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2559         x = vx * mx + minx;
2560         y = vy * my + miny;
2561
2562         edje_object_part_drag_step_set(sd->edje_obj, "elm.dragable.hbar", (double)sd->step.x / (double)w, 0.0);
2563         edje_object_part_drag_step_set(sd->edje_obj, "elm.dragable.vbar", 0.0, (double)sd->step.y / (double)h);
2564         if (sd->page.x > 0)
2565           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.hbar", (double)sd->page.x / (double)w, 0.0);
2566         else
2567           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.hbar", -((double)sd->page.x * ((double)vw / (double)w)) / 100.0, 0.0);
2568         if (sd->page.y > 0)
2569           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.vbar", 0.0, (double)sd->page.y / (double)h);
2570         else
2571           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.vbar", 0.0, -((double)sd->page.y * ((double)vh / (double)h)) / 100.0);
2572
2573         sd->pan_func.get(sd->pan_obj, &px, &py);
2574         if (vx != mx) x = px;
2575         if (vy != my) y = py;
2576         sd->pan_func.set(sd->pan_obj, x, y);
2577         //      if ((px != 0) || (py != 0))
2578         //        edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2579      }
2580    else
2581      {
2582         Evas_Coord px = 0, py = 0, minx = 0, miny = 0;
2583
2584         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.vbar", 1.0, 1.0);
2585         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.hbar", 1.0, 1.0);
2586         if (sd->pan_obj)
2587           {
2588              sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2589              sd->pan_func.get(sd->pan_obj, &px, &py);
2590              sd->pan_func.set(sd->pan_obj, minx, miny);
2591           }
2592         if ((px != minx) || (py != miny))
2593           edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2594      }
2595    _smart_scrollbar_bar_visibility_adjust(sd);
2596 }
2597
2598 static void
2599 _smart_reconfigure(Smart_Data *sd)
2600 {
2601    evas_object_move(sd->edje_obj, sd->x, sd->y);
2602    evas_object_resize(sd->edje_obj, sd->w, sd->h);
2603    evas_object_move(sd->event_obj, sd->x, sd->y);
2604    evas_object_resize(sd->event_obj, sd->w, sd->h);
2605    _smart_scrollbar_size_adjust(sd);
2606 }
2607
2608 static void
2609 _smart_add(Evas_Object *obj)
2610 {
2611    Smart_Data *sd;
2612    Evas_Object *o;
2613
2614    sd = calloc(1, sizeof(Smart_Data));
2615    if (!sd) return;
2616    evas_object_smart_data_set(obj, sd);
2617
2618    sd->smart_obj = obj;
2619    sd->x = 0;
2620    sd->y = 0;
2621    sd->w = 0;
2622    sd->h = 0;
2623    sd->step.x = 32;
2624    sd->step.y = 32;
2625    sd->page.x = -50;
2626    sd->page.y = -50;
2627    sd->hbar_flags = ELM_SMART_SCROLLER_POLICY_AUTO;
2628    sd->vbar_flags = ELM_SMART_SCROLLER_POLICY_AUTO;
2629    sd->hbar_visible = 1;
2630    sd->vbar_visible = 1;
2631
2632    sd->bounce_horiz = 1;
2633    sd->bounce_vert = 1;
2634
2635    sd->one_dir_at_a_time = 1;
2636    sd->momentum_animator_disabled = 0;
2637    sd->bounce_animator_disabled = 0;
2638
2639    o = edje_object_add(evas_object_evas_get(obj));
2640    evas_object_propagate_events_set(o, 0);
2641    sd->edje_obj = o;
2642    elm_smart_scroller_object_theme_set(NULL, obj, "scroller", "base", "default");
2643    edje_object_signal_callback_add(o, "drag", "elm.dragable.vbar", _smart_edje_drag_v, sd);
2644    edje_object_signal_callback_add(o, "drag,start", "elm.dragable.vbar", _smart_edje_drag_v_start, sd);
2645    edje_object_signal_callback_add(o, "drag,stop", "elm.dragable.vbar", _smart_edje_drag_v_stop, sd);
2646    edje_object_signal_callback_add(o, "drag,step", "elm.dragable.vbar", _smart_edje_drag_v, sd);
2647    edje_object_signal_callback_add(o, "drag,page", "elm.dragable.vbar", _smart_edje_drag_v, sd);
2648    edje_object_signal_callback_add(o, "drag", "elm.dragable.hbar", _smart_edje_drag_h, sd);
2649    edje_object_signal_callback_add(o, "drag,start", "elm.dragable.hbar", _smart_edje_drag_h_start, sd);
2650    edje_object_signal_callback_add(o, "drag,stop", "elm.dragable.hbar", _smart_edje_drag_h_stop, sd);
2651    edje_object_signal_callback_add(o, "drag,step", "elm.dragable.hbar", _smart_edje_drag_h, sd);
2652    edje_object_signal_callback_add(o, "drag,page", "elm.dragable.hbar", _smart_edje_drag_h, sd);
2653    evas_object_smart_member_add(o, obj);
2654
2655    o = evas_object_rectangle_add(evas_object_evas_get(obj));
2656    sd->event_obj = o;
2657    evas_object_color_set(o, 0, 0, 0, 0);
2658    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_WHEEL, _smart_event_wheel, sd);
2659    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _smart_event_mouse_down, sd);
2660    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_UP, _smart_event_mouse_up, sd);
2661    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_MOVE, _smart_event_mouse_move, sd);
2662    evas_object_smart_member_add(o, obj);
2663    evas_object_repeat_events_set(o, 1);
2664
2665    sd->pan_func.set = _elm_smart_pan_set;
2666    sd->pan_func.get = _elm_smart_pan_get;
2667    sd->pan_func.max_get = _elm_smart_pan_max_get;
2668    sd->pan_func.min_get = _elm_smart_pan_min_get;
2669    sd->pan_func.child_size_get = _elm_smart_pan_child_size_get;
2670
2671    _smart_scrollbar_reset(sd);
2672 }
2673
2674 static void
2675 _smart_del(Evas_Object *obj)
2676 {
2677    INTERNAL_ENTRY;
2678    elm_smart_scroller_child_set(obj, NULL);
2679    if (!sd->extern_pan) evas_object_del(sd->pan_obj);
2680    evas_object_del(sd->edje_obj);
2681    evas_object_del(sd->event_obj);
2682    if (sd->down.hold_animator) ecore_animator_del(sd->down.hold_animator);
2683    if (sd->down.onhold_animator) ecore_animator_del(sd->down.onhold_animator);
2684    if (sd->down.momentum_animator) ecore_animator_del(sd->down.momentum_animator);
2685    if (sd->down.bounce_x_animator) ecore_animator_del(sd->down.bounce_x_animator);
2686    if (sd->down.bounce_y_animator) ecore_animator_del(sd->down.bounce_y_animator);
2687    if (sd->scrollto.x.animator) ecore_animator_del(sd->scrollto.x.animator);
2688    if (sd->scrollto.y.animator) ecore_animator_del(sd->scrollto.y.animator);
2689    free(sd);
2690    evas_object_smart_data_set(obj, NULL);
2691 }
2692
2693 static void
2694 _smart_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
2695 {
2696    INTERNAL_ENTRY;
2697    sd->x = x;
2698    sd->y = y;
2699    _smart_reconfigure(sd);
2700 }
2701
2702 static void
2703 _smart_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
2704 {
2705    INTERNAL_ENTRY;
2706    sd->w = w;
2707    sd->h = h;
2708    _smart_reconfigure(sd);
2709    _elm_smart_scroller_wanted_region_set(obj);
2710 }
2711
2712 static void
2713 _smart_show(Evas_Object *obj)
2714 {
2715    INTERNAL_ENTRY;
2716    evas_object_show(sd->edje_obj);
2717    evas_object_show(sd->event_obj);
2718 }
2719
2720 static void
2721 _smart_hide(Evas_Object *obj)
2722 {
2723    INTERNAL_ENTRY;
2724    evas_object_hide(sd->edje_obj);
2725    evas_object_hide(sd->event_obj);
2726 }
2727
2728 static void
2729 _smart_color_set(Evas_Object *obj, int r, int g, int b, int a)
2730 {
2731    INTERNAL_ENTRY;
2732    evas_object_color_set(sd->edje_obj, r, g, b, a);
2733 }
2734
2735 static void
2736 _smart_clip_set(Evas_Object *obj, Evas_Object *clip)
2737 {
2738    INTERNAL_ENTRY;
2739    evas_object_clip_set(sd->edje_obj, clip);
2740    evas_object_clip_set(sd->event_obj, clip);
2741 }
2742
2743 static void
2744 _smart_clip_unset(Evas_Object *obj)
2745 {
2746    INTERNAL_ENTRY;
2747    evas_object_clip_unset(sd->edje_obj);
2748    evas_object_clip_unset(sd->event_obj);
2749 }
2750
2751 /* never need to touch this */
2752
2753 static void
2754 _smart_init(void)
2755 {
2756    if (_smart) return;
2757      {
2758         static const Evas_Smart_Class sc =
2759           {
2760              SMART_NAME,
2761              EVAS_SMART_CLASS_VERSION,
2762              _smart_add,
2763              _smart_del,
2764              _smart_move,
2765              _smart_resize,
2766              _smart_show,
2767              _smart_hide,
2768              _smart_color_set,
2769              _smart_clip_set,
2770              _smart_clip_unset,
2771              NULL,
2772              NULL,
2773              NULL,
2774              NULL,
2775              NULL,
2776              NULL,
2777              NULL
2778           };
2779         _smart = evas_smart_class_new(&sc);
2780      }
2781 }
2782