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