src/lib/els_scroller.c

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