src/lib/els_scroller.c

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