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;
 162    elm_smart_scroller_child_viewport_size_get(obj, &w, NULL);
 163    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
 164    return (cw - (x + w));
 165 }
 166
 167 void
 168 elm_smart_scroller_mirrored_set(Evas_Object *obj, Eina_Bool mirrored)
 169 {
 170    API_ENTRY return;
 171    Evas_Coord wx;
 172    if (sd->is_mirrored == mirrored)
 173      return;
 174
 175    sd->is_mirrored = mirrored;
 176    edje_object_mirrored_set(sd->edje_obj, mirrored);
 177
 178    if (sd->is_mirrored)
 179      wx = _elm_smart_scroller_x_mirrored_get(sd->smart_obj, sd->wx);
 180    else
 181      wx = sd->wx;
 182
 183    elm_smart_scroller_child_pos_set(sd->smart_obj, wx, sd->wy);
 184 }
 185
 186 void
 187 elm_smart_scroller_child_set(Evas_Object *obj, Evas_Object *child)
 188 {
 189    Evas_Coord w, h;
 190    Evas_Object *o;
 191
 192    API_ENTRY return;
 193    if (sd->child_obj)
 194      {
 195         _elm_smart_pan_child_set(sd->pan_obj, NULL);
 196         evas_object_event_callback_del_full(sd->child_obj, EVAS_CALLBACK_DEL, _smart_child_del_hook, sd);
 197      }
 198
 199    sd->child_obj = child;
 200    sd->wx = sd->wy = 0;
 201    /* (-1) means want viewports size */
 202    sd->ww = sd->wh = -1;
 203    if (!child) return;
 204
 205    if (!sd->pan_obj)
 206      {
 207         o = _elm_smart_pan_add(evas_object_evas_get(obj));
 208         sd->pan_obj = o;
 209         evas_object_smart_callback_add(o, "changed", _smart_pan_changed_hook, sd);
 210         evas_object_smart_callback_add(o, "pan_changed", _smart_pan_pan_changed_hook, sd);
 211         evas_object_show(o);
 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    elm_smart_scroller_child_pos_set(obj, nx, ny);
1064 }
1065
1066 /* Set should be used for calculated positions, for example, when we move
1067  * because of an animation or because this is the correct position after
1068  * constraints. */
1069 void
1070 elm_smart_scroller_child_region_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
1071 {
1072    _elm_smart_scroller_child_region_show_internal(obj, x, y, w, h, EINA_TRUE);
1073 }
1074
1075 /* Set should be used for setting the wanted position, for example a user scroll
1076  * or moving the cursor in an entry. */
1077 void
1078 elm_smart_scroller_child_region_show(Evas_Object *obj, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
1079 {
1080    _elm_smart_scroller_child_region_show_internal(obj, x, y, w, h, EINA_FALSE);
1081 }
1082
1083 void
1084 elm_smart_scroller_child_viewport_size_get(Evas_Object *obj, Evas_Coord *w, Evas_Coord *h)
1085 {
1086    API_ENTRY return;
1087    edje_object_calc_force(sd->edje_obj);
1088    evas_object_geometry_get(sd->pan_obj, NULL, NULL, w, h);
1089 }
1090
1091 void
1092 elm_smart_scroller_step_size_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
1093 {
1094    API_ENTRY return;
1095    if (x < 1) x = 1;
1096    if (y < 1) y = 1;
1097    sd->step.x = x;
1098    sd->step.y = y;
1099    _smart_scrollbar_size_adjust(sd);
1100 }
1101
1102 void
1103 elm_smart_scroller_step_size_get(Evas_Object *obj, Evas_Coord *x, Evas_Coord *y)
1104 {
1105    API_ENTRY return;
1106    if (x) *x = sd->step.x;
1107    if (y) *y = sd->step.y;
1108 }
1109
1110 void
1111 elm_smart_scroller_page_size_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
1112 {
1113    API_ENTRY return;
1114    sd->page.x = x;
1115    sd->page.y = y;
1116    _smart_scrollbar_size_adjust(sd);
1117 }
1118
1119 void
1120 elm_smart_scroller_page_size_get(Evas_Object *obj, Evas_Coord *x, Evas_Coord *y)
1121 {
1122    API_ENTRY return;
1123    if (x) *x = sd->page.x;
1124    if (y) *y = sd->page.y;
1125 }
1126
1127 void
1128 elm_smart_scroller_policy_set(Evas_Object *obj, Elm_Smart_Scroller_Policy hbar, Elm_Smart_Scroller_Policy vbar)
1129 {
1130    API_ENTRY return;
1131    if ((sd->hbar_flags == hbar) && (sd->vbar_flags == vbar)) return;
1132    sd->hbar_flags = hbar;
1133    sd->vbar_flags = vbar;
1134    if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
1135      edje_object_signal_emit(sd->edje_obj, "elm,action,show_always,hbar", "elm");
1136    else if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
1137      edje_object_signal_emit(sd->edje_obj, "elm,action,hide,hbar", "elm");
1138    else
1139      edje_object_signal_emit(sd->edje_obj, "elm,action,show_notalways,hbar", "elm");
1140    if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
1141      edje_object_signal_emit(sd->edje_obj, "elm,action,show_always,vbar", "elm");
1142    else if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
1143      edje_object_signal_emit(sd->edje_obj, "elm,action,hide,vbar", "elm");
1144    else
1145      edje_object_signal_emit(sd->edje_obj, "elm,action,show_notalways,vbar", "elm");
1146    _smart_scrollbar_size_adjust(sd);
1147 }
1148
1149 void
1150 elm_smart_scroller_policy_get(Evas_Object *obj, Elm_Smart_Scroller_Policy *hbar, Elm_Smart_Scroller_Policy *vbar)
1151 {
1152    API_ENTRY return;
1153    if (hbar) *hbar = sd->hbar_flags;
1154    if (vbar) *vbar = sd->vbar_flags;
1155 }
1156
1157 Evas_Object *
1158 elm_smart_scroller_edje_object_get(Evas_Object *obj)
1159 {
1160    API_ENTRY return NULL;
1161    return sd->edje_obj;
1162 }
1163
1164 void
1165 elm_smart_scroller_single_dir_set(Evas_Object *obj, Eina_Bool single_dir)
1166 {
1167    API_ENTRY return;
1168    sd->one_dir_at_a_time = single_dir;
1169 }
1170
1171 Eina_Bool
1172 elm_smart_scroller_single_dir_get(Evas_Object *obj)
1173 {
1174    API_ENTRY return EINA_FALSE;
1175    return sd->one_dir_at_a_time;
1176 }
1177
1178 void
1179 elm_smart_scroller_object_theme_set(Evas_Object *parent, Evas_Object *obj, const char *clas, const char *group, const char *style)
1180 {
1181    API_ENTRY return;
1182    Evas_Coord mw, mh;
1183    _elm_theme_object_set(parent, sd->edje_obj, clas, group, style);
1184    edje_object_scale_set(sd->edje_obj, elm_widget_scale_get(parent) * _elm_config->scale);
1185    if (sd->pan_obj)
1186      edje_object_part_swallow(sd->edje_obj, "elm.swallow.content", sd->pan_obj);
1187    mw = mh = -1;
1188    elm_coords_finger_size_adjust(1, &mw, 1, &mh);
1189    if (edje_object_part_exists(sd->edje_obj, "elm.scrollbar.base"))
1190      {
1191         Evas_Object *base;
1192         base = edje_object_part_swallow_get(sd->edje_obj, "elm.scrollbar.base");
1193         if (!base)
1194           {
1195              base = evas_object_rectangle_add(evas_object_evas_get(sd->edje_obj));
1196              evas_object_color_set(base, 0, 0, 0, 0);
1197              edje_object_part_swallow(sd->edje_obj, "elm.scrollbar.base", base);
1198           }
1199         if (!_elm_config->thumbscroll_enable)
1200            evas_object_size_hint_min_set(base, mw, mh);
1201      }
1202    sd->vbar_visible = !sd->vbar_visible;
1203    sd->hbar_visible = !sd->hbar_visible;
1204    _smart_scrollbar_bar_visibility_adjust(sd);
1205 }
1206
1207 void
1208 elm_smart_scroller_hold_set(Evas_Object *obj, Eina_Bool hold)
1209 {
1210    API_ENTRY return;
1211    sd->hold = hold;
1212 }
1213
1214 void
1215 elm_smart_scroller_freeze_set(Evas_Object *obj, Eina_Bool freeze)
1216 {
1217    API_ENTRY return;
1218    sd->freeze = freeze;
1219    if (sd->freeze)
1220      {
1221         if (sd->down.onhold_animator)
1222           {
1223              ecore_animator_del(sd->down.onhold_animator);
1224              sd->down.onhold_animator = NULL;
1225           }
1226      }
1227 }
1228
1229 void
1230 elm_smart_scroller_bounce_allow_set(Evas_Object *obj, Eina_Bool horiz, Eina_Bool vert)
1231 {
1232    API_ENTRY return;
1233    sd->bounce_horiz = horiz;
1234    sd->bounce_vert = vert;
1235 }
1236
1237 void
1238 elm_smart_scroller_bounce_allow_get(const Evas_Object *obj, Eina_Bool *horiz, Eina_Bool *vert)
1239 {
1240    API_ENTRY return;
1241    *horiz = sd->bounce_horiz;
1242    *vert = sd->bounce_vert;
1243 }
1244
1245 void
1246 elm_smart_scroller_paging_set(Evas_Object *obj, double pagerel_h, double pagerel_v, Evas_Coord pagesize_h, Evas_Coord pagesize_v)
1247 {
1248    API_ENTRY return;
1249    sd->pagerel_h = pagerel_h;
1250    sd->pagerel_v = pagerel_v;
1251    sd->pagesize_h = pagesize_h;
1252    sd->pagesize_v = pagesize_v;
1253    _smart_page_adjust(sd);
1254 }
1255
1256 void
1257 elm_smart_scroller_paging_get(Evas_Object *obj, double *pagerel_h, double *pagerel_v, Evas_Coord *pagesize_h, Evas_Coord *pagesize_v)
1258 {
1259    API_ENTRY return;
1260    if(pagerel_h) *pagerel_h = sd->pagerel_h;
1261    if(pagerel_v) *pagerel_v = sd->pagerel_v;
1262    if(pagesize_h) *pagesize_h = sd->pagesize_h;
1263    if(pagesize_v) *pagesize_v = sd->pagesize_v;
1264 }
1265
1266 void
1267 elm_smart_scroller_region_bring_in(Evas_Object *obj, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
1268 {
1269    Evas_Coord mx = 0, my = 0, cw = 0, ch = 0, px = 0, py = 0, nx, ny, minx = 0, miny = 0;
1270
1271    API_ENTRY return;
1272    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
1273    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
1274    sd->pan_func.child_size_get(sd->pan_obj, &cw, &ch);
1275    sd->pan_func.get(sd->pan_obj, &px, &py);
1276
1277    nx = px;
1278    if ((x < px) && ((x + w) < (px + (cw - mx)))) nx = x;
1279    else if ((x > px) && ((x + w) > (px + (cw - mx)))) nx = x + w - (cw - mx);
1280    ny = py;
1281    if ((y < py) && ((y + h) < (py + (ch - my)))) ny = y;
1282    else if ((y > py) && ((y + h) > (py + (ch - my)))) ny = y + h - (ch - my);
1283    if ((nx == px) && (ny == py)) return;
1284    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1285        (sd->scrollto.x.animator) || (sd->scrollto.y.animator))
1286      {
1287         _smart_anim_stop(sd->smart_obj);
1288      }
1289    if (sd->scrollto.x.animator)
1290      {
1291         ecore_animator_del(sd->scrollto.x.animator);
1292         sd->scrollto.x.animator = NULL;
1293      }
1294    if (sd->scrollto.y.animator)
1295      {
1296         ecore_animator_del(sd->scrollto.y.animator);
1297         sd->scrollto.y.animator = NULL;
1298      }
1299    if (sd->down.bounce_x_animator)
1300      {
1301         ecore_animator_del(sd->down.bounce_x_animator);
1302         sd->down.bounce_x_animator = NULL;
1303         sd->bouncemex = 0;
1304      }
1305    if (sd->down.bounce_y_animator)
1306      {
1307         ecore_animator_del(sd->down.bounce_y_animator);
1308         sd->down.bounce_y_animator = NULL;
1309         sd->bouncemey = 0;
1310      }
1311    if (sd->down.hold_animator)
1312      {
1313         ecore_animator_del(sd->down.hold_animator);
1314         sd->down.hold_animator = NULL;
1315         _smart_drag_stop(sd->smart_obj);
1316      }
1317    if (sd->down.momentum_animator)
1318      {
1319         ecore_animator_del(sd->down.momentum_animator);
1320         sd->down.momentum_animator = NULL;
1321         sd->down.bounce_x_hold = 0;
1322         sd->down.bounce_y_hold = 0;
1323         sd->down.ax = 0;
1324         sd->down.ay = 0;
1325         sd->down.pdx = 0;
1326         sd->down.pdy = 0;
1327      }
1328    x = nx;
1329    if (x < minx) x = minx;
1330    else if ((x + w) > cw) x = cw - w;
1331    _smart_scrollto_x(sd, _elm_config->bring_in_scroll_friction, x);
1332    y = ny;
1333    if (y < miny) y = miny;
1334    else if ((y + h) > ch) y = ch - h;
1335    _smart_scrollto_y(sd, _elm_config->bring_in_scroll_friction, y);
1336 }
1337
1338 void
1339 elm_smart_scroller_widget_set(Evas_Object *obj, Evas_Object *wid)
1340 {
1341    API_ENTRY return;
1342    sd->widget = wid;
1343 }
1344
1345 /* local subsystem functions */
1346 static void
1347 _smart_edje_drag_v_start(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1348 {
1349    Smart_Data *sd;
1350
1351    sd = data;
1352    _smart_scrollbar_read(sd);
1353    _smart_drag_start(sd->smart_obj);
1354 }
1355
1356 static void
1357 _smart_edje_drag_v_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1358 {
1359    Smart_Data *sd;
1360
1361    sd = data;
1362    _smart_scrollbar_read(sd);
1363    _smart_drag_stop(sd->smart_obj);
1364 }
1365
1366 static void
1367 _smart_edje_drag_v(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1368 {
1369    Smart_Data *sd;
1370
1371    sd = data;
1372    _smart_scrollbar_read(sd);
1373 }
1374
1375 static void
1376 _smart_edje_drag_h_start(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1377 {
1378    Smart_Data *sd;
1379
1380    sd = data;
1381    _smart_scrollbar_read(sd);
1382    _smart_drag_start(sd->smart_obj);
1383 }
1384
1385 static void
1386 _smart_edje_drag_h_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1387 {
1388    Smart_Data *sd;
1389
1390    sd = data;
1391    _smart_scrollbar_read(sd);
1392    _smart_drag_stop(sd->smart_obj);
1393 }
1394
1395 static void
1396 _smart_edje_drag_h(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
1397 {
1398    Smart_Data *sd;
1399
1400    sd = data;
1401    _smart_scrollbar_read(sd);
1402 }
1403
1404 static void
1405 _smart_child_del_hook(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
1406 {
1407    Smart_Data *sd;
1408
1409    sd = data;
1410    sd->child_obj = NULL;
1411    _smart_scrollbar_size_adjust(sd);
1412    _smart_scrollbar_reset(sd);
1413 }
1414
1415 static void
1416 _smart_pan_changed_hook(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
1417 {
1418    Evas_Coord x, y;
1419    Evas_Coord w, h;
1420    Smart_Data *sd;
1421
1422    sd = data;
1423    sd->pan_func.get(sd->pan_obj, &x, &y);
1424    sd->pan_func.child_size_get(sd->pan_obj, &w, &h);
1425    if ((w != sd->child.w) || (h != sd->child.h))
1426      {
1427         sd->child.w = w;
1428         sd->child.h = h;
1429         _smart_scrollbar_size_adjust(sd);
1430         evas_object_size_hint_min_set(sd->smart_obj, sd->child.w, sd->child.h);
1431         elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
1432      }
1433 }
1434
1435 static void
1436 _smart_pan_pan_changed_hook(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
1437 {
1438    Evas_Coord x, y;
1439    Smart_Data *sd;
1440
1441    sd = data;
1442    sd->pan_func.get(sd->pan_obj, &x, &y);
1443    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1444        (sd->scrollto.x.animator) || (sd->scrollto.y.animator))
1445      {
1446         _smart_anim_stop(sd->smart_obj);
1447      }
1448    if (sd->scrollto.x.animator)
1449      {
1450         ecore_animator_del(sd->scrollto.x.animator);
1451         sd->scrollto.x.animator = NULL;
1452      }
1453    if (sd->scrollto.y.animator)
1454      {
1455         ecore_animator_del(sd->scrollto.y.animator);
1456         sd->scrollto.y.animator = NULL;
1457      }
1458    if (sd->down.bounce_x_animator)
1459      {
1460         ecore_animator_del(sd->down.bounce_x_animator);
1461         sd->down.bounce_x_animator = NULL;
1462         sd->bouncemex = 0;
1463      }
1464    if (sd->down.bounce_y_animator)
1465      {
1466         ecore_animator_del(sd->down.bounce_y_animator);
1467         sd->down.bounce_y_animator = NULL;
1468         sd->bouncemey = 0;
1469      }
1470    elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
1471 }
1472
1473 static void
1474 _smart_event_wheel(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
1475 {
1476    Evas_Event_Mouse_Wheel *ev;
1477    Smart_Data *sd;
1478    Evas_Coord x = 0, y = 0;
1479
1480    sd = data;
1481    ev = event_info;
1482    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
1483    if ((evas_key_modifier_is_set(ev->modifiers, "Control")) ||
1484        (evas_key_modifier_is_set(ev->modifiers, "Alt")) ||
1485        (evas_key_modifier_is_set(ev->modifiers, "Shift")) ||
1486        (evas_key_modifier_is_set(ev->modifiers, "Meta")) ||
1487        (evas_key_modifier_is_set(ev->modifiers, "Hyper")) ||
1488        (evas_key_modifier_is_set(ev->modifiers, "Super")))
1489      return;
1490    elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1491    if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1492        (sd->scrollto.x.animator) || (sd->scrollto.y.animator))
1493      {
1494         _smart_anim_stop(sd->smart_obj);
1495      }
1496    if (sd->scrollto.x.animator)
1497      {
1498         ecore_animator_del(sd->scrollto.x.animator);
1499         sd->scrollto.x.animator = NULL;
1500      }
1501    if (sd->scrollto.y.animator)
1502      {
1503         ecore_animator_del(sd->scrollto.y.animator);
1504         sd->scrollto.y.animator = NULL;
1505      }
1506    if (sd->down.bounce_x_animator)
1507      {
1508         ecore_animator_del(sd->down.bounce_x_animator);
1509         sd->down.bounce_x_animator = NULL;
1510         sd->bouncemex = 0;
1511      }
1512    if (sd->down.bounce_y_animator)
1513      {
1514         ecore_animator_del(sd->down.bounce_y_animator);
1515         sd->down.bounce_y_animator = NULL;
1516         sd->bouncemey = 0;
1517      }
1518    if (!ev->direction)
1519      y += ev->z * sd->step.y;
1520    else if (ev->direction == 1)
1521      x += ev->z * sd->step.x;
1522
1523    if ((!sd->hold) && (!sd->freeze))
1524      {
1525         _update_wanted_coordinates(sd, x, y);
1526         elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
1527      }
1528 }
1529
1530 static void
1531 _smart_event_mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
1532 {
1533    Evas_Event_Mouse_Down *ev;
1534    Smart_Data *sd;
1535    Evas_Coord x = 0, y = 0;
1536
1537    sd = data;
1538    ev = event_info;
1539 //   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
1540    if (_elm_config->thumbscroll_enable)
1541      {
1542         sd->down.hold = 0;
1543         if ((sd->down.bounce_x_animator) || (sd->down.bounce_y_animator) ||
1544             (sd->down.momentum_animator) || (sd->scrollto.x.animator) ||
1545             (sd->scrollto.y.animator))
1546           {
1547              ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL | EVAS_EVENT_FLAG_ON_HOLD;
1548              sd->down.scroll = 1;
1549              sd->down.hold = 1;
1550              _smart_anim_stop(sd->smart_obj);
1551           }
1552         if (sd->scrollto.x.animator)
1553           {
1554              ecore_animator_del(sd->scrollto.x.animator);
1555              sd->scrollto.x.animator = NULL;
1556           }
1557         if (sd->scrollto.y.animator)
1558           {
1559              ecore_animator_del(sd->scrollto.y.animator);
1560              sd->scrollto.y.animator = NULL;
1561           }
1562         if (sd->down.bounce_x_animator)
1563           {
1564              ecore_animator_del(sd->down.bounce_x_animator);
1565              sd->down.bounce_x_animator = NULL;
1566              sd->bouncemex = 0;
1567           }
1568         if (sd->down.bounce_y_animator)
1569           {
1570              ecore_animator_del(sd->down.bounce_y_animator);
1571              sd->down.bounce_y_animator = NULL;
1572              sd->bouncemey = 0;
1573           }
1574         if (sd->down.hold_animator)
1575           {
1576              ecore_animator_del(sd->down.hold_animator);
1577              sd->down.hold_animator = NULL;
1578              _smart_drag_stop(sd->smart_obj);
1579           }
1580         if (sd->down.momentum_animator)
1581           {
1582              ecore_animator_del(sd->down.momentum_animator);
1583              sd->down.momentum_animator = NULL;
1584              sd->down.bounce_x_hold = 0;
1585              sd->down.bounce_y_hold = 0;
1586              sd->down.ax = 0;
1587              sd->down.ay = 0;
1588           }
1589         if (ev->button == 1)
1590           {
1591              sd->down.now = 1;
1592              sd->down.dragged = 0;
1593              sd->down.dir_x = 0;
1594              sd->down.dir_y = 0;
1595              sd->down.x = ev->canvas.x;
1596              sd->down.y = ev->canvas.y;
1597              elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1598              sd->down.sx = x;
1599              sd->down.sy = y;
1600              sd->down.locked = 0;
1601              memset(&(sd->down.history[0]), 0, sizeof(sd->down.history[0]) * 20);
1602 #ifdef EVTIME
1603              sd->down.history[0].timestamp = ev->timestamp / 1000.0;
1604 #else
1605              sd->down.history[0].timestamp = ecore_loop_time_get();
1606 #endif
1607              sd->down.history[0].x = ev->canvas.x;
1608              sd->down.history[0].y = ev->canvas.y;
1609           }
1610         sd->down.dragged_began = 0;
1611         sd->down.hold_parent = 0;
1612         sd->down.cancelled = 0;
1613      }
1614 }
1615
1616 static Eina_Bool
1617 _smart_hold_animator(void *data)
1618 {
1619    Smart_Data *sd = data;
1620    Evas_Coord ox, oy;
1621
1622    elm_smart_scroller_child_pos_get(sd->smart_obj, &ox, &oy);
1623    if (sd->down.dir_x)
1624      {
1625         if ((!sd->widget) ||
1626             (!elm_widget_drag_child_locked_x_get(sd->widget)))
1627           {
1628              ox = sd->down.hold_x;
1629           }
1630      }
1631    if (sd->down.dir_y)
1632      {
1633         if ((!sd->widget) ||
1634             (!elm_widget_drag_child_locked_y_get(sd->widget)))
1635           {
1636              oy = sd->down.hold_y;
1637           }
1638      }
1639    elm_smart_scroller_child_pos_set(sd->smart_obj, ox, oy);
1640    return ECORE_CALLBACK_RENEW;
1641 }
1642
1643 static Eina_Bool
1644 _smart_event_post_up(void *data, Evas *e __UNUSED__)
1645 {
1646    Smart_Data *sd = data;
1647    if (sd->widget)
1648      {
1649         if (sd->down.dragged)
1650           {
1651              elm_widget_drag_lock_x_set(sd->widget, 0);
1652              elm_widget_drag_lock_y_set(sd->widget, 0);
1653           }
1654      }
1655    return EINA_TRUE;
1656 }
1657
1658 static void
1659 _smart_event_mouse_up(void *data, Evas *e, Evas_Object *obj __UNUSED__, void *event_info)
1660 {
1661    Evas_Event_Mouse_Down *ev;
1662    Smart_Data *sd;
1663    Evas_Coord x = 0, y = 0, ox = 0, oy = 0;
1664
1665    sd = data;
1666    ev = event_info;
1667    sd->down.hold_parent = 0;
1668 //   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
1669    evas_post_event_callback_push(e, _smart_event_post_up, sd);
1670    // FIXME: respect elm_widget_scroll_hold_get of parent container
1671    if (_elm_config->thumbscroll_enable)
1672      {
1673         if (ev->button == 1)
1674           {
1675              if (sd->down.onhold_animator)
1676                {
1677                   ecore_animator_del(sd->down.onhold_animator);
1678                   sd->down.onhold_animator = NULL;
1679                }
1680              x = ev->canvas.x - sd->down.x;
1681              y = ev->canvas.y - sd->down.y;
1682              if (sd->down.dragged)
1683                {
1684                   _smart_drag_stop(sd->smart_obj);
1685                   if ((!sd->hold) && (!sd->freeze))
1686                     {
1687                        double t, at, dt;
1688                        int i;
1689                        Evas_Coord ax, ay, dx, dy, vel;
1690
1691 #ifdef EVTIME
1692                        t = ev->timestamp / 1000.0;
1693 #else
1694                        t = ecore_loop_time_get();
1695 #endif
1696                        ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
1697                        ax = ev->canvas.x;
1698                        ay = ev->canvas.y;
1699                        at = 0.0;
1700 #ifdef SCROLLDBG
1701                        printf("------ %i %i\n", ev->canvas.x, ev->canvas.y);
1702 #endif
1703                        for (i = 0; i < 20; i++)
1704                          {
1705                             dt = t - sd->down.history[i].timestamp;
1706                             if (dt > 0.2) break;
1707 #ifdef SCROLLDBG
1708                             printf("H: %i %i @ %1.3f\n",
1709                                    sd->down.history[i].x,
1710                                    sd->down.history[i].y, dt);
1711 #endif
1712                             at += dt;
1713                             ax += sd->down.history[i].x;
1714                             ay += sd->down.history[i].y;
1715                          }
1716                        ax /= (i + 1);
1717                        ay /= (i + 1);
1718                        at /= (i + 1);
1719                        at *= 4.0;
1720                        dx = ev->canvas.x - ax;
1721                        dy = ev->canvas.y - ay;
1722                        if (at > 0)
1723                          {
1724                             vel = sqrt((dx * dx) + (dy * dy)) / at;
1725                             if ((_elm_config->thumbscroll_friction > 0.0) &&
1726                                 (vel > _elm_config->thumbscroll_momentum_threshold) &&
1727                                 (!sd->freeze))
1728                               {
1729                                  sd->down.dx = ((double)dx / at);
1730                                  sd->down.dy = ((double)dy / at);
1731                                  if (((sd->down.dx > 0) && (sd->down.pdx > 0)) ||
1732                                      ((sd->down.dx < 0) && (sd->down.pdx < 0)))
1733                                    sd->down.dx += (double)sd->down.pdx * 1.5; // FIXME: * 1.5 - probably should be config
1734                                  if (((sd->down.dy > 0) && (sd->down.pdy > 0)) ||
1735                                      ((sd->down.dy < 0) && (sd->down.pdy < 0)))
1736                                    sd->down.dy += (double)sd->down.pdy * 1.5; // FIXME: * 1.5 - probably should be config
1737                                  if (((sd->down.dx > 0) && (sd->down.pdx > 0)) ||
1738                                      ((sd->down.dx < 0) && (sd->down.pdx < 0)) ||
1739                                      ((sd->down.dy > 0) && (sd->down.pdy > 0)) ||
1740                                      ((sd->down.dy < 0) && (sd->down.pdy < 0)))
1741                                   {
1742                                     double t = ecore_loop_time_get();
1743                                     double dt = t - sd->down.anim_start;
1744
1745                                     if (dt < 0.0) dt = 0.0;
1746                                     else if (dt > _elm_config->thumbscroll_friction)
1747                                       dt = _elm_config->thumbscroll_friction;
1748                                     sd->down.extra_time = _elm_config->thumbscroll_friction - dt;
1749                                   }
1750                                  else
1751                                   sd->down.extra_time = 0.0;
1752                                  sd->down.pdx = sd->down.dx;
1753                                  sd->down.pdy = sd->down.dy;
1754                                  ox = -sd->down.dx;
1755                                  oy = -sd->down.dy;
1756                                  if (!_smart_do_page(sd))
1757                                    {
1758                                       if (!sd->down.momentum_animator && !sd->momentum_animator_disabled)
1759                                         {
1760                                            sd->down.momentum_animator = ecore_animator_add(_smart_momentum_animator, sd);
1761                                            ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1762                                            _smart_anim_start(sd->smart_obj);
1763                                         }
1764                                       sd->down.anim_start = ecore_loop_time_get();
1765                                       elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1766                                       sd->down.sx = x;
1767                                       sd->down.sy = y;
1768                                       sd->down.b0x = 0;
1769                                       sd->down.b0y = 0;
1770                                    }
1771                               }
1772                          }
1773                        if (sd->down.hold_animator)
1774                          {
1775                             ecore_animator_del(sd->down.hold_animator);
1776                             sd->down.hold_animator = NULL;
1777                          }
1778                     }
1779                   else
1780                     {
1781                        sd->down.pdx = 0;
1782                        sd->down.pdy = 0;
1783                     }
1784                   evas_event_feed_hold(e, 0, ev->timestamp, ev->data);
1785                   if (_smart_do_page(sd))
1786                     {
1787                        Evas_Coord pgx, pgy;
1788
1789                        elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1790                        if ((!sd->widget) ||
1791                            (!elm_widget_drag_child_locked_x_get(sd->widget)))
1792                          {
1793                             pgx = _smart_page_x_get(sd, ox);
1794                             if (pgx != x)
1795                               {
1796                                  ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1797                                  _smart_scrollto_x(sd, _elm_config->page_scroll_friction, pgx);
1798                               }
1799                          }
1800                        if ((!sd->widget) ||
1801                            (!elm_widget_drag_child_locked_y_get(sd->widget)))
1802                          {
1803                             pgy = _smart_page_y_get(sd, oy);
1804                             if (pgy != y)
1805                               {
1806                                  ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1807                                  _smart_scrollto_y(sd, _elm_config->page_scroll_friction, pgy);
1808                               }
1809                          }
1810                     }
1811                }
1812              else
1813                {
1814                   sd->down.pdx = 0;
1815                   sd->down.pdy = 0;
1816                   if (_smart_do_page(sd))
1817                     {
1818                        Evas_Coord pgx, pgy;
1819
1820                        elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1821                        if ((!sd->widget) ||
1822                            (!elm_widget_drag_child_locked_x_get(sd->widget)))
1823                          {
1824                             pgx = _smart_page_x_get(sd, ox);
1825                             if (pgx != x) _smart_scrollto_x(sd, _elm_config->page_scroll_friction, pgx);
1826                          }
1827                        if ((!sd->widget) ||
1828                            (!elm_widget_drag_child_locked_y_get(sd->widget)))
1829                          {
1830                             pgy = _smart_page_y_get(sd, oy);
1831                             if (pgy != y) _smart_scrollto_y(sd, _elm_config->page_scroll_friction, pgy);
1832                          }
1833                     }
1834                   if (sd->down.hold_animator)
1835                     {
1836                        ecore_animator_del(sd->down.hold_animator);
1837                        sd->down.hold_animator = NULL;
1838                     }
1839                }
1840              if (sd->down.scroll)
1841                {
1842                   ev->event_flags |= EVAS_EVENT_FLAG_ON_SCROLL;
1843                   sd->down.scroll = 0;
1844                }
1845              if (sd->down.hold)
1846                {
1847                   ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
1848                   sd->down.hold = 0;
1849                }
1850              sd->down.dragged_began = 0;
1851              sd->down.dir_x = 0;
1852              sd->down.dir_y = 0;
1853              sd->down.want_dragged = 0;
1854              sd->down.dragged = 0;
1855              sd->down.now = 0;
1856              elm_smart_scroller_child_pos_get(sd->smart_obj, &x, &y);
1857              elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
1858              _update_wanted_coordinates(sd, x, y);
1859
1860              if (!_smart_do_page(sd))
1861                bounce_eval(sd);
1862           }
1863      }
1864 }
1865
1866 static Eina_Bool
1867 _smart_onhold_animator(void *data)
1868 {
1869    Smart_Data *sd;
1870    double t, td;
1871    double vx, vy;
1872    Evas_Coord x, y, ox, oy;
1873
1874    sd = data;
1875    t = ecore_loop_time_get();
1876    if (sd->down.onhold_tlast > 0.0)
1877      {
1878         td = t - sd->down.onhold_tlast;
1879         vx = sd->down.onhold_vx * td * (double)_elm_config->thumbscroll_threshold * 2.0;
1880         vy = sd->down.onhold_vy * td * (double)_elm_config->thumbscroll_threshold * 2.0;
1881         elm_smart_scroller_child_pos_get(sd->smart_obj, &ox, &oy);
1882         x = ox;
1883         y = oy;
1884
1885         if (sd->down.dir_x)
1886           {
1887              if ((!sd->widget) ||
1888                  (!elm_widget_drag_child_locked_x_get(sd->widget)))
1889                {
1890                   sd->down.onhold_vxe += vx;
1891                   x = ox + (int)sd->down.onhold_vxe;
1892                   sd->down.onhold_vxe -= (int)sd->down.onhold_vxe;
1893                }
1894           }
1895
1896         if (sd->down.dir_y)
1897           {
1898              if ((!sd->widget) ||
1899                  (!elm_widget_drag_child_locked_y_get(sd->widget)))
1900                {
1901                   sd->down.onhold_vye += vy;
1902                   y = oy + (int)sd->down.onhold_vye;
1903                   sd->down.onhold_vye -= (int)sd->down.onhold_vye;
1904                }
1905           }
1906
1907         elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
1908      }
1909    sd->down.onhold_tlast = t;
1910    return ECORE_CALLBACK_RENEW;
1911 }
1912
1913 static Eina_Bool
1914 _smart_event_post_move(void *data, Evas *e __UNUSED__)
1915 {
1916    Smart_Data *sd = data;
1917
1918    if (sd->down.want_dragged)
1919      {
1920         int start = 0;
1921
1922         if (sd->down.hold_parent)
1923           {
1924              if ((sd->down.dir_x) && !can_scroll(sd, sd->down.hdir))
1925                {
1926                   sd->down.dir_x = 0;
1927                }
1928              if ((sd->down.dir_y) && !can_scroll(sd, sd->down.vdir))
1929                {
1930                   sd->down.dir_y = 0;
1931                }
1932           }
1933         if (sd->down.dir_x)
1934           {
1935              if ((!sd->widget) ||
1936                  (!elm_widget_drag_child_locked_x_get(sd->widget)))
1937                {
1938                   sd->down.want_dragged = 0;
1939                   sd->down.dragged = 1;
1940                   if (sd->widget)
1941                     {
1942                        elm_widget_drag_lock_x_set(sd->widget, 1);
1943                     }
1944                   start = 1;
1945                }
1946              else
1947                sd->down.dir_x = 0;
1948           }
1949         if (sd->down.dir_y)
1950           {
1951              if ((!sd->widget) ||
1952                  (!elm_widget_drag_child_locked_y_get(sd->widget)))
1953                {
1954                   sd->down.want_dragged = 0;
1955                   sd->down.dragged = 1;
1956                   if (sd->widget)
1957                     {
1958                        elm_widget_drag_lock_y_set(sd->widget, 1);
1959                     }
1960                   start = 1;
1961                }
1962              else
1963                sd->down.dir_y = 0;
1964           }
1965         if ((!sd->down.dir_x) && (!sd->down.dir_y))
1966           {
1967              sd->down.cancelled = 1;
1968           }
1969         if (start) _smart_drag_start(sd->smart_obj);
1970      }
1971    return EINA_TRUE;
1972 }
1973
1974 static void
1975 _smart_event_mouse_move(void *data, Evas *e, Evas_Object *obj __UNUSED__, void *event_info)
1976 {
1977    Evas_Event_Mouse_Move *ev;
1978    Smart_Data *sd;
1979    Evas_Coord x = 0, y = 0;
1980
1981    sd = data;
1982    ev = event_info;
1983 //   if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return ;
1984    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) sd->down.hold_parent = 1;
1985    evas_post_event_callback_push(e, _smart_event_post_move, sd);
1986    // FIXME: respect elm_widget_scroll_hold_get of parent container
1987    if (_elm_config->thumbscroll_enable)
1988      {
1989         if (sd->down.now)
1990           {
1991              int dodir = 0;
1992
1993 #ifdef SCROLLDBG
1994              printf("::: %i %i\n", ev->cur.canvas.x, ev->cur.canvas.y);
1995 #endif
1996              memmove(&(sd->down.history[1]), &(sd->down.history[0]),
1997                      sizeof(sd->down.history[0]) * 19);
1998 #ifdef EVTIME
1999              sd->down.history[0].timestamp = ev->timestamp / 1000.0;
2000 #else
2001              sd->down.history[0].timestamp = ecore_loop_time_get();
2002 #endif
2003              sd->down.history[0].x = ev->cur.canvas.x;
2004              sd->down.history[0].y = ev->cur.canvas.y;
2005
2006              if (!sd->down.dragged_began)
2007                {
2008                   x = ev->cur.canvas.x - sd->down.x;
2009                   y = ev->cur.canvas.y - sd->down.y;
2010
2011                   sd->down.hdir = -1;
2012                   sd->down.vdir = -1;
2013
2014                   if      (x > 0) sd->down.hdir = LEFT;
2015                   else if (x < 0) sd->down.hdir = RIGHT;
2016                   if      (y > 0) sd->down.vdir = UP;
2017                   else if (y < 0) sd->down.vdir = DOWN;
2018
2019                   if (x < 0) x = -x;
2020                   if (y < 0) y = -y;
2021
2022                   if ((sd->one_dir_at_a_time) &&
2023                       (!((sd->down.dir_x) || (sd->down.dir_y))))
2024                     {
2025                        if (x > _elm_config->thumbscroll_threshold)
2026                          {
2027                             if (x > (y * 2))
2028                               {
2029                                  sd->down.dir_x = 1;
2030                                  sd->down.dir_y = 0;
2031                                  dodir++;
2032                               }
2033                          }
2034                        if (y > _elm_config->thumbscroll_threshold)
2035                          {
2036                             if (y > (x * 2))
2037                               {
2038                                  sd->down.dir_x = 0;
2039                                  sd->down.dir_y = 1;
2040                                  dodir++;
2041                               }
2042                          }
2043                        if (!dodir)
2044                          {
2045                             sd->down.dir_x = 1;
2046                             sd->down.dir_y = 1;
2047                          }
2048                     }
2049                   else
2050                     {
2051 //                       can_scroll(sd, LEFT);
2052 //                       can_scroll(sd, RIGHT);
2053 //                       can_scroll(sd, UP);
2054 //                       can_scroll(sd, DOWN);
2055                        sd->down.dir_x = 1;
2056                        sd->down.dir_y = 1;
2057                     }
2058                }
2059              if ((!sd->hold) && (!sd->freeze))
2060                {
2061                   if ((sd->down.dragged) ||
2062                       (((x * x) + (y * y)) >
2063                        (_elm_config->thumbscroll_threshold *
2064                         _elm_config->thumbscroll_threshold)))
2065                     {
2066                        sd->down.dragged_began = 1;
2067                        if (!sd->down.dragged)
2068                          {
2069                             sd->down.want_dragged = 1;
2070                             ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2071 //                            evas_event_feed_hold(e, 1, ev->timestamp, ev->data);
2072 //                            _smart_drag_start(sd->smart_obj);
2073                          }
2074                        if (sd->down.dragged)
2075                          {
2076                             ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2077                          }
2078 //                       ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2079 //                       sd->down.dragged = 1;
2080                        if (sd->down.dir_x)
2081                          x = sd->down.sx - (ev->cur.canvas.x - sd->down.x);
2082                        else
2083                          x = sd->down.sx;
2084                        if (sd->down.dir_y)
2085                          y = sd->down.sy - (ev->cur.canvas.y - sd->down.y);
2086                        else
2087                          y = sd->down.sy;
2088                        if ((sd->down.dir_x) || (sd->down.dir_y))
2089                          {
2090                             if (!sd->down.locked)
2091                               {
2092                                  sd->down.locked_x = x;
2093                                  sd->down.locked_y = y;
2094                                  sd->down.locked = 1;
2095                               }
2096                             if (!((sd->down.dir_x) && (sd->down.dir_y)))
2097                               {
2098                                  if (sd->down.dir_x) y = sd->down.locked_y;
2099                                  else x = sd->down.locked_x;
2100                               }
2101                          }
2102                        if (_elm_config->thumbscroll_border_friction > 0.0)
2103                          {
2104                             Evas_Coord minx, miny;
2105                             sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2106                             if (y < miny)
2107                                y += (miny - y) *
2108                                   _elm_config->thumbscroll_border_friction;
2109                             else if (sd->child.h <= sd->h)
2110                                y += (sd->down.sy - y) *
2111                                   _elm_config->thumbscroll_border_friction;
2112                             else if ((sd->child.h - sd->h + miny) < y)
2113                                y += (sd->child.h - sd->h + miny - y) *
2114                                   _elm_config->thumbscroll_border_friction;
2115                             if (x < minx)
2116                                x += (minx - x) *
2117                                   _elm_config->thumbscroll_border_friction;
2118                             else if (sd->child.w <= sd->w)
2119                                x += (sd->down.sx - x) *
2120                                   _elm_config->thumbscroll_border_friction;
2121                             else if ((sd->child.w - sd->w + minx) < x)
2122                                x += (sd->child.w - sd->w + minx - x) *
2123                                   _elm_config->thumbscroll_border_friction;
2124                          }
2125
2126                        sd->down.hold_x = x;
2127                        sd->down.hold_y = y;
2128                        if (!sd->down.hold_animator)
2129                          sd->down.hold_animator =
2130                             ecore_animator_add(_smart_hold_animator, sd);
2131 //                       printf("a %i %i\n", sd->down.hold_x, sd->down.hold_y);
2132 //                       _smart_onhold_animator(sd);
2133 //                       elm_smart_scroller_child_pos_set(sd->smart_obj, x, y);
2134                     }
2135                   else
2136                     {
2137                        if (sd->down.dragged_began)
2138                          {
2139                             ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
2140                             if (!sd->down.hold)
2141                               {
2142                                  sd->down.hold = 1;
2143                                  evas_event_feed_hold(e, 1, ev->timestamp, ev->data);
2144                               }
2145                          }
2146                     }
2147                }
2148              else if (!sd->freeze)
2149                {
2150                   Evas_Coord ex, ey, ew, eh;
2151                   double vx = 0.0, vy = 0.0;
2152
2153                   evas_object_geometry_get(sd->event_obj, &ex, &ey, &ew, &eh);
2154                   x = ev->cur.canvas.x - ex;
2155                   y = ev->cur.canvas.y - ey;
2156                   if (x < _elm_config->thumbscroll_threshold)
2157                     {
2158                        if (_elm_config->thumbscroll_threshold > 0.0)
2159                          vx = -(double)(_elm_config->thumbscroll_threshold - x) /
2160                          _elm_config->thumbscroll_threshold;
2161                        else
2162                          vx = -1.0;
2163                     }
2164                   else if (x > (ew - _elm_config->thumbscroll_threshold))
2165                     {
2166                        if (_elm_config->thumbscroll_threshold > 0.0)
2167                          vx = (double)(_elm_config->thumbscroll_threshold - (ew - x)) /
2168                          _elm_config->thumbscroll_threshold;
2169                        else
2170                          vx = 1.0;
2171                     }
2172                   if (y < _elm_config->thumbscroll_threshold)
2173                     {
2174                        if (_elm_config->thumbscroll_threshold > 0.0)
2175                          vy = -(double)(_elm_config->thumbscroll_threshold - y) /
2176                          _elm_config->thumbscroll_threshold;
2177                        else
2178                          vy = -1.0;
2179                     }
2180                   else if (y > (eh - _elm_config->thumbscroll_threshold))
2181                     {
2182                        if (_elm_config->thumbscroll_threshold > 0.0)
2183                          vy = (double)(_elm_config->thumbscroll_threshold - (eh - y)) /
2184                          _elm_config->thumbscroll_threshold;
2185                        else
2186                          vy = 1.0;
2187                     }
2188                   if ((vx != 0.0) || (vy != 0.0))
2189                     {
2190                        sd->down.onhold_vx = vx;
2191                        sd->down.onhold_vy = vy;
2192                        if (!sd->down.onhold_animator)
2193                          {
2194                             sd->down.onhold_vxe = 0.0;
2195                             sd->down.onhold_vye = 0.0;
2196                             sd->down.onhold_tlast = 0.0;
2197                             sd->down.onhold_animator = ecore_animator_add(_smart_onhold_animator, sd);
2198                          }
2199 //                       printf("b %i %i\n", sd->down.hold_x, sd->down.hold_y);
2200                     }
2201                   else
2202                     {
2203                        if (sd->down.onhold_animator)
2204                          {
2205                             ecore_animator_del(sd->down.onhold_animator);
2206                             sd->down.onhold_animator = NULL;
2207                          }
2208                     }
2209                }
2210           }
2211      }
2212 }
2213
2214 static void
2215 _smart_scrollbar_read(Smart_Data *sd)
2216 {
2217    Evas_Coord x, y, mx = 0, my = 0, px, py, minx = 0, miny = 0;
2218    double vx, vy;
2219
2220    edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.vbar", NULL, &vy);
2221    edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.hbar", &vx, NULL);
2222    sd->pan_func.max_get(sd->pan_obj, &mx, &my);
2223    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2224    x = vx * (double)mx + minx;
2225    y = vy * (double)my + miny;
2226    sd->pan_func.get(sd->pan_obj, &px, &py);
2227    sd->pan_func.set(sd->pan_obj, x, y);
2228    if ((px != x) || (py != y))
2229      edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2230 }
2231
2232 static void
2233 _smart_scrollbar_reset(Smart_Data *sd)
2234 {
2235    Evas_Coord px = 0, py = 0, minx = 0, miny = 0;
2236
2237    edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.vbar", 0.0, 0.0);
2238    edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.hbar", 0.0, 0.0);
2239    if ((!sd->child_obj) && (!sd->extern_pan))
2240      {
2241         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.vbar", 1.0, 1.0);
2242         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.hbar", 1.0, 1.0);
2243      }
2244    sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2245    sd->pan_func.get(sd->pan_obj, &px, &py);
2246    sd->pan_func.set(sd->pan_obj, minx, miny);
2247    if ((px != minx) || (py != miny))
2248      edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2249 }
2250
2251 static int
2252 _smart_scrollbar_bar_v_visibility_adjust(Smart_Data *sd)
2253 {
2254    int scroll_v_vis_change = 0;
2255    Evas_Coord h, vw, vh;
2256
2257    h = sd->child.h;
2258    evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
2259    if (sd->vbar_visible)
2260      {
2261         if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2262           {
2263              if ((sd->child_obj) || (sd->extern_pan))
2264                {
2265                   if (h <= vh)
2266                     {
2267                        scroll_v_vis_change = 1;
2268                        sd->vbar_visible = 0;
2269                     }
2270                }
2271              else
2272                {
2273                   scroll_v_vis_change = 1;
2274                   sd->vbar_visible = 0;
2275                }
2276           }
2277         else if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
2278           {
2279              scroll_v_vis_change = 1;
2280              sd->vbar_visible = 0;
2281           }
2282      }
2283    else
2284      {
2285         if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2286           {
2287              if ((sd->child_obj) || (sd->extern_pan))
2288                {
2289                   if (h > vh)
2290                     {
2291                        scroll_v_vis_change = 1;
2292                        sd->vbar_visible = 1;
2293                     }
2294                }
2295           }
2296         else if (sd->vbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
2297           {
2298              scroll_v_vis_change = 1;
2299              sd->vbar_visible = 1;
2300           }
2301      }
2302    if (scroll_v_vis_change)
2303      {
2304         if (sd->vbar_flags != ELM_SMART_SCROLLER_POLICY_OFF)
2305           {
2306              if (sd->vbar_visible)
2307                edje_object_signal_emit(sd->edje_obj, "elm,action,show,vbar", "elm");
2308              else
2309                edje_object_signal_emit(sd->edje_obj, "elm,action,hide,vbar", "elm");
2310              edje_object_message_signal_process(sd->edje_obj);
2311              _smart_scrollbar_size_adjust(sd);
2312           }
2313         else
2314           edje_object_signal_emit(sd->edje_obj, "elm,action,hide,vbar", "elm");
2315      }
2316    return scroll_v_vis_change;
2317 }
2318
2319 static int
2320 _smart_scrollbar_bar_h_visibility_adjust(Smart_Data *sd)
2321 {
2322    int scroll_h_vis_change = 0;
2323    Evas_Coord w, vw, vh;
2324
2325    w = sd->child.w;
2326    evas_object_geometry_get(sd->pan_obj, NULL, NULL, &vw, &vh);
2327    if (sd->hbar_visible)
2328      {
2329         if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2330           {
2331              if ((sd->child_obj) || (sd->extern_pan))
2332                {
2333                   if (w <= vw)
2334                     {
2335                        scroll_h_vis_change = 1;
2336                        sd->hbar_visible = 0;
2337                     }
2338                }
2339              else
2340                {
2341                   scroll_h_vis_change = 1;
2342                   sd->hbar_visible = 0;
2343                }
2344           }
2345         else if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_OFF)
2346           {
2347              scroll_h_vis_change = 1;
2348              sd->hbar_visible = 0;
2349           }
2350      }
2351    else
2352      {
2353         if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_AUTO)
2354           {
2355              if ((sd->child_obj) || (sd->extern_pan))
2356                {
2357                   if (w > vw)
2358                     {
2359                        scroll_h_vis_change = 1;
2360                        sd->hbar_visible = 1;
2361                     }
2362                }
2363           }
2364         else if (sd->hbar_flags == ELM_SMART_SCROLLER_POLICY_ON)
2365           {
2366              scroll_h_vis_change = 1;
2367              sd->hbar_visible = 1;
2368           }
2369      }
2370    if (scroll_h_vis_change)
2371      {
2372         if (sd->hbar_flags != ELM_SMART_SCROLLER_POLICY_OFF)
2373           {
2374              if (sd->hbar_visible)
2375                edje_object_signal_emit(sd->edje_obj, "elm,action,show,hbar", "elm");
2376              else
2377                edje_object_signal_emit(sd->edje_obj, "elm,action,hide,hbar", "elm");
2378              edje_object_message_signal_process(sd->edje_obj);
2379              _smart_scrollbar_size_adjust(sd);
2380           }
2381         else
2382           edje_object_signal_emit(sd->edje_obj, "elm,action,hide,hbar", "elm");
2383         _smart_scrollbar_size_adjust(sd);
2384      }
2385    return scroll_h_vis_change;
2386 }
2387
2388 static void
2389 _smart_scrollbar_bar_visibility_adjust(Smart_Data *sd)
2390 {
2391    int changed = 0;
2392
2393    changed |= _smart_scrollbar_bar_h_visibility_adjust(sd);
2394    changed |= _smart_scrollbar_bar_v_visibility_adjust(sd);
2395    if (changed)
2396      {
2397         _smart_scrollbar_bar_h_visibility_adjust(sd);
2398         _smart_scrollbar_bar_v_visibility_adjust(sd);
2399      }
2400 }
2401
2402 static void
2403 _smart_scrollbar_size_adjust(Smart_Data *sd)
2404 {
2405    if ((sd->child_obj) || (sd->extern_pan))
2406      {
2407         Evas_Coord x, y, w, h, mx = 0, my = 0, vw = 0, vh = 0, px, py, minx = 0, miny = 0;
2408         double vx, vy, size;
2409
2410         edje_object_part_geometry_get(sd->edje_obj, "elm.swallow.content",
2411                                       NULL, NULL, &vw, &vh);
2412         w = sd->child.w;
2413         if (w < 1) w = 1;
2414         size = (double)vw / (double)w;
2415         if (size > 1.0)
2416           {
2417              size = 1.0;
2418              edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.hbar", 0.0, 0.0);
2419           }
2420         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.hbar", size, 1.0);
2421
2422         h = sd->child.h;
2423         if (h < 1) h = 1;
2424         size = (double)vh / (double)h;
2425         if (size > 1.0)
2426           {
2427              size = 1.0;
2428              edje_object_part_drag_value_set(sd->edje_obj, "elm.dragable.vbar", 0.0, 0.0);
2429           }
2430         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.vbar", 1.0, size);
2431
2432         edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.hbar", &vx, NULL);
2433         edje_object_part_drag_value_get(sd->edje_obj, "elm.dragable.vbar", NULL, &vy);
2434         sd->pan_func.max_get(sd->pan_obj, &mx, &my);
2435         sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2436         x = vx * mx + minx;
2437         y = vy * my + miny;
2438
2439         edje_object_part_drag_step_set(sd->edje_obj, "elm.dragable.hbar", (double)sd->step.x / (double)w, 0.0);
2440         edje_object_part_drag_step_set(sd->edje_obj, "elm.dragable.vbar", 0.0, (double)sd->step.y / (double)h);
2441         if (sd->page.x > 0)
2442           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.hbar", (double)sd->page.x / (double)w, 0.0);
2443         else
2444           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.hbar", -((double)sd->page.x * ((double)vw / (double)w)) / 100.0, 0.0);
2445         if (sd->page.y > 0)
2446           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.vbar", 0.0, (double)sd->page.y / (double)h);
2447         else
2448           edje_object_part_drag_page_set(sd->edje_obj, "elm.dragable.vbar", 0.0, -((double)sd->page.y * ((double)vh / (double)h)) / 100.0);
2449
2450         sd->pan_func.get(sd->pan_obj, &px, &py);
2451         if (vx != mx) x = px;
2452         if (vy != my) y = py;
2453         sd->pan_func.set(sd->pan_obj, x, y);
2454 //      if ((px != 0) || (py != 0))
2455 //        edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2456      }
2457    else
2458      {
2459         Evas_Coord px = 0, py = 0, minx = 0, miny = 0;
2460
2461         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.vbar", 1.0, 1.0);
2462         edje_object_part_drag_size_set(sd->edje_obj, "elm.dragable.hbar", 1.0, 1.0);
2463         sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
2464         sd->pan_func.get(sd->pan_obj, &px, &py);
2465         sd->pan_func.set(sd->pan_obj, minx, miny);
2466         if ((px != minx) || (py != miny))
2467           edje_object_signal_emit(sd->edje_obj, "elm,action,scroll", "elm");
2468      }
2469    _smart_scrollbar_bar_visibility_adjust(sd);
2470 }
2471
2472 static void
2473 _smart_reconfigure(Smart_Data *sd)
2474 {
2475    evas_object_move(sd->edje_obj, sd->x, sd->y);
2476    evas_object_resize(sd->edje_obj, sd->w, sd->h);
2477    evas_object_move(sd->event_obj, sd->x, sd->y);
2478    evas_object_resize(sd->event_obj, sd->w, sd->h);
2479    _smart_scrollbar_size_adjust(sd);
2480 }
2481
2482 static void
2483 _smart_add(Evas_Object *obj)
2484 {
2485    Smart_Data *sd;
2486    Evas_Object *o;
2487
2488    sd = calloc(1, sizeof(Smart_Data));
2489    if (!sd) return;
2490    evas_object_smart_data_set(obj, sd);
2491
2492    sd->smart_obj = obj;
2493    sd->x = 0;
2494    sd->y = 0;
2495    sd->w = 0;
2496    sd->h = 0;
2497    sd->step.x = 32;
2498    sd->step.y = 32;
2499    sd->page.x = -50;
2500    sd->page.y = -50;
2501    sd->hbar_flags = ELM_SMART_SCROLLER_POLICY_AUTO;
2502    sd->vbar_flags = ELM_SMART_SCROLLER_POLICY_AUTO;
2503    sd->hbar_visible = 1;
2504    sd->vbar_visible = 1;
2505
2506    sd->bounce_horiz = 1;
2507    sd->bounce_vert = 1;
2508
2509    sd->one_dir_at_a_time = 1;
2510    sd->momentum_animator_disabled = 0;
2511    sd->bounce_animator_disabled = 0;
2512
2513    o = edje_object_add(evas_object_evas_get(obj));
2514    evas_object_propagate_events_set(o, 0);
2515    sd->edje_obj = o;
2516    // FIXME: null parent obj ... :(
2517    elm_smart_scroller_object_theme_set(NULL, obj, "scroller", "base", "default");
2518    edje_object_signal_callback_add(o, "drag", "elm.dragable.vbar", _smart_edje_drag_v, sd);
2519    edje_object_signal_callback_add(o, "drag,start", "elm.dragable.vbar", _smart_edje_drag_v_start, sd);
2520    edje_object_signal_callback_add(o, "drag,stop", "elm.dragable.vbar", _smart_edje_drag_v_stop, sd);
2521    edje_object_signal_callback_add(o, "drag,step", "elm.dragable.vbar", _smart_edje_drag_v, sd);
2522    edje_object_signal_callback_add(o, "drag,page", "elm.dragable.vbar", _smart_edje_drag_v, sd);
2523    edje_object_signal_callback_add(o, "drag", "elm.dragable.hbar", _smart_edje_drag_h, sd);
2524    edje_object_signal_callback_add(o, "drag,start", "elm.dragable.hbar", _smart_edje_drag_h_start, sd);
2525    edje_object_signal_callback_add(o, "drag,stop", "elm.dragable.hbar", _smart_edje_drag_h_stop, sd);
2526    edje_object_signal_callback_add(o, "drag,step", "elm.dragable.hbar", _smart_edje_drag_h, sd);
2527    edje_object_signal_callback_add(o, "drag,page", "elm.dragable.hbar", _smart_edje_drag_h, sd);
2528    evas_object_smart_member_add(o, obj);
2529
2530    o = evas_object_rectangle_add(evas_object_evas_get(obj));
2531    sd->event_obj = o;
2532    evas_object_color_set(o, 0, 0, 0, 0);
2533    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_WHEEL, _smart_event_wheel, sd);
2534    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _smart_event_mouse_down, sd);
2535    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_UP, _smart_event_mouse_up, sd);
2536    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_MOVE, _smart_event_mouse_move, sd);
2537    evas_object_smart_member_add(o, obj);
2538    evas_object_repeat_events_set(o, 1);
2539
2540    sd->pan_func.set = _elm_smart_pan_set;
2541    sd->pan_func.get = _elm_smart_pan_get;
2542    sd->pan_func.max_get = _elm_smart_pan_max_get;
2543    sd->pan_func.min_get = _elm_smart_pan_min_get;
2544    sd->pan_func.child_size_get = _elm_smart_pan_child_size_get;
2545
2546    _smart_scrollbar_reset(sd);
2547 }
2548
2549 static void
2550 _smart_del(Evas_Object *obj)
2551 {
2552    INTERNAL_ENTRY;
2553    elm_smart_scroller_child_set(obj, NULL);
2554    if (!sd->extern_pan) evas_object_del(sd->pan_obj);
2555    evas_object_del(sd->edje_obj);
2556    evas_object_del(sd->event_obj);
2557    if (sd->down.hold_animator) ecore_animator_del(sd->down.hold_animator);
2558    if (sd->down.onhold_animator) ecore_animator_del(sd->down.onhold_animator);
2559    if (sd->down.momentum_animator) ecore_animator_del(sd->down.momentum_animator);
2560    if (sd->down.bounce_x_animator) ecore_animator_del(sd->down.bounce_x_animator);
2561    if (sd->down.bounce_y_animator) ecore_animator_del(sd->down.bounce_y_animator);
2562    if (sd->scrollto.x.animator) ecore_animator_del(sd->scrollto.x.animator);
2563    if (sd->scrollto.y.animator) ecore_animator_del(sd->scrollto.y.animator);
2564    free(sd);
2565    evas_object_smart_data_set(obj, NULL);
2566 }
2567
2568 static void
2569 _smart_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
2570 {
2571    INTERNAL_ENTRY;
2572    sd->x = x;
2573    sd->y = y;
2574    _smart_reconfigure(sd);
2575 }
2576
2577 static void
2578 _smart_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
2579 {
2580    INTERNAL_ENTRY;
2581    Evas_Coord ww, wh, wx = sd->wx;
2582    sd->w = w;
2583    sd->h = h;
2584    _smart_reconfigure(sd);
2585
2586    /* Flip to RTL cords only if init in RTL mode */
2587    if(sd->is_mirrored)
2588      wx = _elm_smart_scroller_x_mirrored_get(obj, sd->wx);
2589
2590    if (sd->ww == -1)
2591      {
2592         elm_smart_scroller_child_viewport_size_get(obj, &ww, &wh);
2593      }
2594    else
2595      {
2596         ww = sd->ww;
2597         wh = sd->wh;
2598      }
2599
2600    elm_smart_scroller_child_region_set(obj, wx, sd->wy, ww, wh);
2601 }
2602
2603 static void
2604 _smart_show(Evas_Object *obj)
2605 {
2606    INTERNAL_ENTRY;
2607    evas_object_show(sd->edje_obj);
2608    evas_object_show(sd->event_obj);
2609 }
2610
2611 static void
2612 _smart_hide(Evas_Object *obj)
2613 {
2614    INTERNAL_ENTRY;
2615    evas_object_hide(sd->edje_obj);
2616    evas_object_hide(sd->event_obj);
2617 }
2618
2619 static void
2620 _smart_color_set(Evas_Object *obj, int r, int g, int b, int a)
2621 {
2622    INTERNAL_ENTRY;
2623    evas_object_color_set(sd->edje_obj, r, g, b, a);
2624 }
2625
2626 static void
2627 _smart_clip_set(Evas_Object *obj, Evas_Object *clip)
2628 {
2629    INTERNAL_ENTRY;
2630    evas_object_clip_set(sd->edje_obj, clip);
2631    evas_object_clip_set(sd->event_obj, clip);
2632 }
2633
2634 static void
2635 _smart_clip_unset(Evas_Object *obj)
2636 {
2637    INTERNAL_ENTRY;
2638    evas_object_clip_unset(sd->edje_obj);
2639    evas_object_clip_unset(sd->event_obj);
2640 }
2641
2642 /* never need to touch this */
2643
2644 static void
2645 _smart_init(void)
2646 {
2647    if (_smart) return;
2648      {
2649         static const Evas_Smart_Class sc =
2650           {
2651              SMART_NAME,
2652                EVAS_SMART_CLASS_VERSION,
2653                _smart_add,
2654                _smart_del,
2655                _smart_move,
2656                _smart_resize,
2657                _smart_show,
2658                _smart_hide,
2659                _smart_color_set,
2660                _smart_clip_set,
2661                _smart_clip_unset,
2662                NULL,
2663                NULL,
2664                NULL,
2665                NULL,
2666                NULL,
2667                NULL,
2668                NULL
2669           };
2670         _smart = evas_smart_class_new(&sc);
2671      }
2672 }
2673