src/lib/elm_slider.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 typedef struct _Widget_Data Widget_Data;
   5
   6 struct _Widget_Data
   7 {
   8    Evas_Object *slider;
   9    Evas_Object *icon;
  10    Evas_Object *end;
  11    Evas_Object *spacer;
  12
  13    Ecore_Timer *delay;
  14
  15    Eina_Hash  *labels;
  16    const char *units;
  17    const char *indicator;
  18
  19    const char *(*indicator_format_func)(double val);
  20    void (*indicator_format_free)(const char *str);
  21
  22    const char *(*units_format_func)(double val);
  23    void (*units_format_free)(const char *str);
  24
  25    double val, val_min, val_max, val2;
  26    Evas_Coord size;
  27    Evas_Coord downx, downy;
  28
  29    Eina_Bool horizontal : 1;
  30    Eina_Bool inverted : 1;
  31    Eina_Bool indicator_show : 1;
  32    Eina_Bool spacer_down : 1;
  33    Eina_Bool frozen : 1;
  34 };
  35
  36 #define ELM_SLIDER_INVERTED_FACTOR (-1.0)
  37
  38 static const char *widtype = NULL;
  39 static void _del_hook(Evas_Object *obj);
  40 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  41 static void _theme_hook(Evas_Object *obj);
  42 static void _disable_hook(Evas_Object *obj);
  43 static void _sizing_eval(Evas_Object *obj);
  44 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
  45 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
  46 static void _units_set(Evas_Object *obj);
  47 static void _val_set(Evas_Object *obj);
  48 static void _indicator_set(Evas_Object *obj);
  49 static void _on_focus_hook(void *data, Evas_Object *obj);
  50 static void _drag_up(void *data, Evas_Object *obj,
  51                     const char *emission, const char *source);
  52 static void _drag_down(void *data, Evas_Object *obj,
  53                     const char *emission, const char *source);
  54 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  55                              Evas_Callback_Type type, void *event_info);
  56 static void _spacer_down_cb(void *data, Evas * e, Evas_Object * obj, void *event_info);
  57 static void _spacer_move_cb(void *data, Evas * e, Evas_Object * obj, void *event_info);
  58 static void _spacer_up_cb(void *data, Evas * e, Evas_Object * obj, void *event_info);
  59
  60 static const char SIG_CHANGED[] = "changed";
  61 static const char SIG_DELAY_CHANGED[] = "delay,changed";
  62 static const char SIG_DRAG_START[] = "slider,drag,start";
  63 static const char SIG_DRAG_STOP[] = "slider,drag,stop";
  64 static const Evas_Smart_Cb_Description _signals[] = {
  65   {SIG_CHANGED, ""},
  66   {SIG_DELAY_CHANGED, ""},
  67   {SIG_DRAG_START, ""},
  68   {SIG_DRAG_STOP, ""},
  69   {NULL, NULL}
  70 };
  71
  72 static Eina_Bool
  73 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  74 {
  75    Evas_Event_Mouse_Wheel *mev;
  76    Evas_Event_Key_Down *ev;
  77    Widget_Data *wd;
  78
  79    wd = elm_widget_data_get(obj);
  80    if (!wd) return EINA_FALSE;
  81
  82    if (type == EVAS_CALLBACK_KEY_DOWN) goto key_down;
  83    else if (type != EVAS_CALLBACK_MOUSE_WHEEL) return EINA_FALSE;
  84
  85    mev = event_info;
  86    if (mev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  87    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  88
  89    if (mev->z < 0) _drag_up(obj, NULL, NULL, NULL);
  90    else _drag_down(obj, NULL, NULL, NULL);
  91    mev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  92    return EINA_TRUE;
  93
  94   key_down:
  95    ev = event_info;
  96    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  97    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  98    if ((!strcmp(ev->keyname, "Left"))
  99        || (!strcmp(ev->keyname, "KP_Left")))
 100      {
 101         if (!wd->horizontal) return EINA_FALSE;
 102         if (!wd->inverted) _drag_down(obj, NULL, NULL, NULL);
 103         else _drag_up(obj, NULL, NULL, NULL);
 104         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 105         return EINA_TRUE;
 106      }
 107    else if ((!strcmp(ev->keyname, "Right"))
 108             || (!strcmp(ev->keyname, "KP_Right")))
 109      {
 110         if (!wd->horizontal) return EINA_FALSE;
 111         if (!wd->inverted) _drag_up(obj, NULL, NULL, NULL);
 112         else _drag_down(obj, NULL, NULL, NULL);
 113         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 114         return EINA_TRUE;
 115      }
 116    else if ((!strcmp(ev->keyname, "Up")) || (!strcmp(ev->keyname, "KP_Up")))
 117      {
 118         if (wd->horizontal) return EINA_FALSE;
 119         if (wd->inverted) _drag_up(obj, NULL, NULL, NULL);
 120         else _drag_down(obj, NULL, NULL, NULL);
 121         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 122         return EINA_TRUE;
 123      }
 124    else if ((!strcmp(ev->keyname, "Down")) || (!strcmp(ev->keyname, "KP_Down")))
 125      {
 126         if (wd->horizontal) return EINA_FALSE;
 127         if (wd->inverted) _drag_down(obj, NULL, NULL, NULL);
 128         else _drag_up(obj, NULL, NULL, NULL);
 129         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 130         return EINA_TRUE;
 131      }
 132    else return EINA_FALSE;
 133 }
 134
 135 static void
 136 _del_hook(Evas_Object *obj)
 137 {
 138    Widget_Data *wd = elm_widget_data_get(obj);
 139    if (!wd) return;
 140    if (wd->labels) eina_hash_free(wd->labels);
 141    if (wd->indicator) eina_stringshare_del(wd->units);
 142    if (wd->delay) ecore_timer_del(wd->delay);
 143    free(wd);
 144 }
 145
 146 static void
 147 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
 148 {
 149    Widget_Data *wd = elm_widget_data_get(obj);
 150    if (!wd) return;
 151    if (elm_widget_focus_get(obj))
 152      {
 153         edje_object_signal_emit(wd->slider, "elm,action,focus", "elm");
 154         evas_object_focus_set(wd->slider, EINA_TRUE);
 155      }
 156    else
 157      {
 158         edje_object_signal_emit(wd->slider, "elm,action,unfocus", "elm");
 159         evas_object_focus_set(wd->slider, EINA_FALSE);
 160      }
 161 }
 162
 163 static void
 164 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
 165 {
 166    Widget_Data *wd = elm_widget_data_get(obj);
 167    if (!wd) return;
 168    edje_object_mirrored_set(wd->slider, rtl);
 169 }
 170
 171 static Eina_Bool
 172 _labels_foreach_text_set(const Eina_Hash *hash __UNUSED__, const void *key, void *data, void *fdata)
 173 {
 174   Widget_Data *wd = fdata;
 175
 176   edje_object_part_text_set(wd->slider, key, data);
 177
 178   return 1;
 179 }
 180
 181 static void
 182 _theme_hook(Evas_Object *obj)
 183 {
 184    Widget_Data *wd = elm_widget_data_get(obj);
 185    if (!wd) return;
 186    _elm_widget_mirrored_reload(obj);
 187    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 188    if (wd->horizontal)
 189      _elm_theme_object_set(obj, wd->slider, "slider", "horizontal", elm_widget_style_get(obj));
 190    else
 191      _elm_theme_object_set(obj, wd->slider, "slider", "vertical", elm_widget_style_get(obj));
 192    if (elm_widget_disabled_get(obj))
 193      edje_object_signal_emit(wd->slider, "elm,state,disabled", "elm");
 194    else
 195      edje_object_signal_emit(wd->slider, "elm,state,enabled", "elm");
 196    if (wd->icon)
 197      {
 198         edje_object_part_swallow(wd->slider, "elm.swallow.content", wd->icon);
 199         edje_object_signal_emit(wd->slider, "elm,state,icon,visible", "elm");
 200      }
 201    if (wd->end)
 202      edje_object_signal_emit(wd->slider, "elm,state,end,visible", "elm");
 203    else
 204      edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 205    if (wd->labels)
 206      {
 207         eina_hash_foreach(wd->labels, _labels_foreach_text_set, wd);
 208             edje_object_signal_emit(wd->slider, "elm,state,text,visible", "elm");
 209      }
 210
 211    if (wd->units)
 212      edje_object_signal_emit(wd->slider, "elm,state,units,visible", "elm");
 213
 214    if (wd->horizontal)
 215      evas_object_size_hint_min_set(wd->spacer, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale, 1);
 216    else
 217      evas_object_size_hint_min_set(wd->spacer, 1, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale);
 218
 219    if (wd->inverted)
 220      edje_object_signal_emit(wd->slider, "elm,state,inverted,on", "elm");
 221
 222    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 223    _units_set(obj);
 224    _indicator_set(obj);
 225    edje_object_message_signal_process(wd->slider);
 226    edje_object_scale_set(wd->slider, elm_widget_scale_get(obj) * _elm_config->scale);
 227    _val_set(obj);
 228    _sizing_eval(obj);
 229 }
 230
 231 static void
 232 _disable_hook(Evas_Object *obj)
 233 {
 234    Widget_Data *wd = elm_widget_data_get(obj);
 235    if (!wd) return;
 236    if (elm_widget_disabled_get(obj))
 237      edje_object_signal_emit(wd->slider, "elm,state,disabled", "elm");
 238    else
 239      edje_object_signal_emit(wd->slider, "elm,state,enabled", "elm");
 240 }
 241
 242 static void
 243 _sizing_eval(Evas_Object *obj)
 244 {
 245    Widget_Data *wd = elm_widget_data_get(obj);
 246    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 247    if (!wd) return;
 248    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 249    edje_object_size_min_restricted_calc(wd->slider, &minw, &minh, minw, minh);
 250    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 251    evas_object_size_hint_min_set(obj, minw, minh);
 252    evas_object_size_hint_max_set(obj, maxw, maxh);
 253 }
 254
 255 static void
 256 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 257 {
 258    Widget_Data *wd = elm_widget_data_get(data);
 259    if (!wd) return;
 260    if ((obj != wd->icon) && (obj != wd->end)) return;
 261    _sizing_eval(data);
 262 }
 263
 264 static void
 265 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 266 {
 267    Widget_Data *wd = elm_widget_data_get(obj);
 268    Evas_Object *sub = event_info;
 269    if (!wd) return;
 270    if (sub == wd->icon)
 271      {
 272         edje_object_signal_emit(wd->slider, "elm,state,icon,hidden", "elm");
 273         evas_object_event_callback_del_full
 274            (sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 275         wd->icon = NULL;
 276         edje_object_message_signal_process(wd->slider);
 277         _sizing_eval(obj);
 278      }
 279    if (sub == wd->end)
 280      {
 281         edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 282         evas_object_event_callback_del_full(sub,
 283                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 284                                             _changed_size_hints, obj);
 285         wd->end = NULL;
 286         edje_object_message_signal_process(wd->slider);
 287         _sizing_eval(obj);
 288      }
 289 }
 290
 291 static Eina_Bool
 292 _delay_change(void *data)
 293 {
 294    Widget_Data *wd = elm_widget_data_get(data);
 295    if (!wd) return ECORE_CALLBACK_CANCEL;
 296    wd->delay = NULL;
 297    evas_object_smart_callback_call(data, SIG_DELAY_CHANGED, NULL);
 298    return ECORE_CALLBACK_CANCEL;
 299 }
 300
 301 static void
 302 _val_fetch(Evas_Object *obj)
 303 {
 304    Eina_Bool rtl;
 305    Widget_Data *wd = elm_widget_data_get(obj);
 306    double posx = 0.0, posy = 0.0, pos = 0.0, val;
 307    if (!wd) return;
 308    edje_object_part_drag_value_get(wd->slider, "elm.dragable.slider",
 309                                    &posx, &posy);
 310    if (wd->horizontal) pos = posx;
 311    else pos = posy;
 312
 313    rtl = elm_widget_mirrored_get(obj);
 314    if ((!rtl && wd->inverted) || (rtl &&
 315                                   ((!wd->horizontal && wd->inverted) ||
 316                                    (wd->horizontal && !wd->inverted)))) pos = 1.0 - pos;
 317    val = (pos * (wd->val_max - wd->val_min)) + wd->val_min;
 318    if (val != wd->val)
 319      {
 320         wd->val = val;
 321         evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 322         if (wd->delay) ecore_timer_del(wd->delay);
 323         wd->delay = ecore_timer_add(0.2, _delay_change, obj);
 324      }
 325 }
 326
 327 static void
 328 _val_set(Evas_Object *obj)
 329 {
 330    Eina_Bool rtl;
 331    Widget_Data *wd = elm_widget_data_get(obj);
 332    double pos;
 333    if (!wd) return;
 334    if (wd->val_max > wd->val_min)
 335      pos = (wd->val - wd->val_min) / (wd->val_max - wd->val_min);
 336    else
 337      pos = 0.0;
 338    if (pos < 0.0) pos = 0.0;
 339    else if (pos > 1.0) pos = 1.0;
 340
 341    rtl = elm_widget_mirrored_get(obj);
 342    if ((!rtl && wd->inverted) || (rtl &&
 343                                   ((!wd->horizontal && wd->inverted) ||
 344                                    (wd->horizontal && !wd->inverted)))) pos = 1.0 - pos;
 345    edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", pos, pos);
 346 }
 347
 348 static void
 349 _units_set(Evas_Object *obj)
 350 {
 351    Widget_Data *wd = elm_widget_data_get(obj);
 352    if (!wd) return;
 353    if (wd->units_format_func)
 354      {
 355         const char *buf;
 356         buf = wd->units_format_func(wd->val);
 357         edje_object_part_text_set(wd->slider, "elm.units", buf);
 358         if (wd->units_format_free) wd->units_format_free(buf);
 359      }
 360    else if (wd->units)
 361      {
 362         char buf[1024];
 363
 364         snprintf(buf, sizeof(buf), wd->units, wd->val);
 365         edje_object_part_text_set(wd->slider, "elm.units", buf);
 366      }
 367    else
 368      edje_object_part_text_set(wd->slider, "elm.units", NULL);
 369 }
 370
 371 static void
 372 _indicator_set(Evas_Object *obj)
 373 {
 374    Widget_Data *wd = elm_widget_data_get(obj);
 375    if (!wd) return;
 376    if (wd->indicator_format_func)
 377      {
 378         const char *buf;
 379         buf = wd->indicator_format_func(wd->val);
 380         edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", buf);
 381         if (wd->indicator_format_free) wd->indicator_format_free(buf);
 382      }
 383    else if (wd->indicator)
 384      {
 385         char buf[1024];
 386         snprintf(buf, sizeof(buf), wd->indicator, wd->val);
 387         edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", buf);
 388      }
 389    else
 390      edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", NULL);
 391 }
 392
 393 static void
 394 _drag(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 395 {
 396    Widget_Data *wd = elm_widget_data_get((Evas_Object*)data);
 397    if (elm_widget_disabled_get(data)) return;
 398    _val_fetch(data);
 399    _units_set(data);
 400    _indicator_set(data);
 401    edje_object_signal_emit(wd->slider, "elm,state,drag", "elm");
 402    edje_object_message_signal_process(wd->slider);
 403 }
 404
 405 static void
 406 _drag_start(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 407 {
 408    Widget_Data *wd = elm_widget_data_get((Evas_Object*)data);
 409    if (elm_widget_disabled_get(data)) return;
 410    _val_fetch(data);
 411    evas_object_smart_callback_call(data, SIG_DRAG_START, NULL);
 412    _units_set(data);
 413    _indicator_set(data);
 414    elm_widget_scroll_freeze_push(data);
 415    edje_object_signal_emit(wd->slider, "elm,state,drag", "elm");
 416    edje_object_message_signal_process(wd->slider);
 417 }
 418
 419 static void
 420 _drag_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 421 {
 422    if (elm_widget_disabled_get(data)) return;
 423    _val_fetch(data);
 424    evas_object_smart_callback_call(data, SIG_DRAG_STOP, NULL);
 425    _units_set(data);
 426    _indicator_set(data);
 427    elm_widget_scroll_freeze_pop(data);
 428 }
 429
 430 static void
 431 _drag_step(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 432 {
 433    if (elm_widget_disabled_get(data)) return;
 434    _val_fetch(data);
 435    _units_set(data);
 436    _indicator_set(data);
 437 }
 438
 439 static void
 440 _drag_up(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 441 {
 442    double step;
 443    Widget_Data *wd;
 444    if (elm_widget_disabled_get(data)) return;
 445
 446    wd = elm_widget_data_get(data);
 447    step = 0.05;
 448
 449    if (wd->inverted) step *= ELM_SLIDER_INVERTED_FACTOR;
 450
 451    edje_object_part_drag_step(wd->slider, "elm.dragable.slider", step, step);
 452 }
 453
 454 static void
 455 _drag_down(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 456 {
 457    double step;
 458    Widget_Data *wd;
 459    if (elm_widget_disabled_get(data)) return;
 460
 461    wd = elm_widget_data_get(data);
 462    step = -0.05;
 463
 464    if (wd->inverted) step *= ELM_SLIDER_INVERTED_FACTOR;
 465
 466    edje_object_part_drag_step(wd->slider, "elm.dragable.slider", step, step);
 467 }
 468
 469 static void
 470 _spacer_down_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
 471 {
 472    Widget_Data *wd = elm_widget_data_get(data);
 473    Evas_Event_Mouse_Down *ev = event_info;
 474    Evas_Coord x, y, w, h;
 475    double button_x = 0.0, button_y = 0.0;
 476    if (elm_widget_disabled_get(data)) return;
 477
 478    wd->spacer_down = EINA_TRUE;
 479    wd->val2 = wd->val;
 480    evas_object_geometry_get(wd->spacer, &x, &y, &w, &h);
 481    wd->downx = ev->canvas.x - x;
 482    wd->downy = ev->canvas.y - y;
 483    edje_object_part_drag_value_get(wd->slider, "elm.dragable.slider", &button_x, &button_y);
 484    if (wd->horizontal)
 485      {
 486         button_x = ((double)ev->canvas.x - (double)x) / (double)w;
 487         if (button_x > 1) button_x = 1;
 488         if (button_x < 0) button_x = 0;
 489      }
 490    else
 491      {
 492         button_y = ((double)ev->canvas.y - (double)y) / (double)h;
 493         if (button_y > 1) button_y = 1;
 494         if (button_y < 0) button_y = 0;
 495      }
 496    edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", button_x, button_y);
 497    _val_fetch(data);
 498    evas_object_smart_callback_call(data, SIG_DRAG_START, NULL);
 499    _units_set(data);
 500    _indicator_set(data);
 501    edje_object_signal_emit(wd->slider, "elm,state,indicator,show", "elm");
 502    edje_object_signal_emit(wd->slider, "elm,state,drag", "elm");
 503    edje_object_message_signal_process(wd->slider);
 504 }
 505
 506 static void
 507 _spacer_move_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
 508 {
 509    Widget_Data *wd = elm_widget_data_get(data);
 510    Evas_Event_Mouse_Move *ev = event_info;
 511    Evas_Coord x, y, w, h, d = 0;
 512    double button_x = 0.0, button_y = 0.0;
 513    if (elm_widget_disabled_get(data)) return;
 514
 515    if  (wd->spacer_down)
 516      {
 517         evas_object_geometry_get(wd->spacer, &x, &y, &w, &h);
 518         if (wd->horizontal) d = abs(ev->cur.canvas.x - x - wd->downx);
 519         else d = abs(ev->cur.canvas.y - y - wd->downy);
 520         if (d > (_elm_config->thumbscroll_threshold - 1))
 521           {
 522              if (!wd->frozen)
 523                {
 524                   elm_widget_scroll_freeze_push(data);
 525                   wd->frozen = EINA_TRUE;
 526                }
 527              ev->event_flags &= ~EVAS_EVENT_FLAG_ON_HOLD;
 528           }
 529
 530         if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD)
 531           {
 532              if (wd->spacer_down) wd->spacer_down = EINA_FALSE;
 533              _val_fetch(data);
 534              evas_object_smart_callback_call(data, SIG_DRAG_STOP, NULL);
 535              _units_set(data);
 536              _indicator_set(data);
 537              if (wd->frozen)
 538                {
 539                   elm_widget_scroll_freeze_pop(data);
 540                   wd->frozen = EINA_FALSE;
 541                }
 542              edje_object_signal_emit(wd->slider, "elm,state,indicator,hide", "elm");
 543              elm_slider_value_set(data, wd->val2);
 544              return;
 545           }
 546         if (wd->horizontal)
 547           {
 548              button_x = ((double)ev->cur.canvas.x - (double)x) / (double)w;
 549              if (button_x > 1) button_x = 1;
 550              if (button_x < 0) button_x = 0;
 551           }
 552         else
 553           {
 554              button_y = ((double)ev->cur.canvas.y - (double)y) / (double)h;
 555              if (button_y > 1) button_y = 1;
 556              if (button_y < 0) button_y = 0;
 557           }
 558         edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", button_x, button_y);
 559         _val_fetch(data);
 560         _units_set(data);
 561         _indicator_set(data);
 562         edje_object_signal_emit(wd->slider, "elm,state,drag", "elm");
 563         edje_object_message_signal_process(wd->slider);
 564      }
 565 }
 566
 567 static void
 568 _spacer_up_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 569 {
 570    Widget_Data *wd = elm_widget_data_get(data);
 571    if (elm_widget_disabled_get(data)) return;
 572    if (!wd->spacer_down) return;
 573
 574    wd->spacer_down = EINA_FALSE;
 575    _val_fetch(data);
 576    evas_object_smart_callback_call(data, SIG_DRAG_STOP, NULL);
 577    _units_set(data);
 578    _indicator_set(data);
 579    if (wd->frozen)
 580      {
 581         elm_widget_scroll_freeze_pop(data);
 582         wd->frozen = EINA_FALSE;
 583      }
 584    edje_object_signal_emit(wd->slider, "elm,state,indicator,hide", "elm");
 585 }
 586
 587 static void
 588 _elm_slider_label_set(Evas_Object *obj, const char *part, const char *label)
 589 {
 590    ELM_CHECK_WIDTYPE(obj, widtype);
 591    Widget_Data *wd = elm_widget_data_get(obj);
 592    const char* default_part = "elm.text";
 593    const char* real_part;
 594
 595    if (!wd) return;
 596
 597    if (!part)
 598      real_part = default_part;
 599    else
 600      real_part = part;
 601
 602    if (wd->labels)
 603      {
 604        const char* old_label;
 605
 606        old_label = eina_hash_find(wd->labels, real_part);
 607        if (!old_label)
 608            eina_hash_add(wd->labels, real_part, eina_stringshare_add(label));
 609        else
 610          {
 611            eina_stringshare_ref(old_label);
 612            eina_hash_modify(wd->labels, real_part, eina_stringshare_add(label));
 613            eina_stringshare_del(old_label);
 614          }
 615      }
 616
 617    if (label)
 618      {
 619         edje_object_signal_emit(wd->slider, "elm,state,text,visible", "elm");
 620         edje_object_message_signal_process(wd->slider);
 621      }
 622    else
 623      {
 624         edje_object_signal_emit(wd->slider, "elm,state,text,hidden", "elm");
 625         edje_object_message_signal_process(wd->slider);
 626      }
 627
 628    edje_object_part_text_set(wd->slider, real_part, label);
 629    _sizing_eval(obj);
 630 }
 631
 632 static const char *
 633 _elm_slider_label_get(const Evas_Object *obj, const char *part)
 634 {
 635    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 636    Widget_Data *wd = elm_widget_data_get(obj);
 637
 638    if (!wd) return NULL;
 639    if (!wd->labels) return NULL;
 640
 641    if (!part)
 642      return eina_hash_find(wd->labels, "elm.text");
 643    return eina_hash_find(wd->labels, part);
 644 }
 645
 646 static void
 647 _icon_set(Evas_Object *obj, Evas_Object *icon)
 648 {
 649    Widget_Data *wd = elm_widget_data_get(obj);
 650    if (!wd) return;
 651    if (wd->icon == icon) return;
 652    if (wd->icon) evas_object_del(wd->icon);
 653    wd->icon = icon;
 654    if (icon)
 655      {
 656         elm_widget_sub_object_add(obj, icon);
 657         evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 658                                        _changed_size_hints, obj);
 659         edje_object_part_swallow(wd->slider, "elm.swallow.icon", icon);
 660         edje_object_signal_emit(wd->slider, "elm,state,icon,visible", "elm");
 661         edje_object_message_signal_process(wd->slider);
 662      }
 663    _sizing_eval(obj);
 664 }
 665
 666 static Evas_Object *
 667 _icon_unset(Evas_Object *obj)
 668 {
 669    Widget_Data *wd = elm_widget_data_get(obj);
 670    Evas_Object *ret = NULL;
 671    if (!wd) return NULL;
 672    if (wd->icon)
 673      {
 674         elm_widget_sub_object_del(obj, wd->icon);
 675         evas_object_event_callback_del_full(wd->icon,
 676                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 677                                             _changed_size_hints, obj);
 678         ret = wd->icon;
 679         edje_object_part_unswallow(wd->slider, wd->icon);
 680         edje_object_signal_emit(wd->slider, "elm,state,icon,hidden", "elm");
 681         wd->icon = NULL;
 682         _sizing_eval(obj);
 683      }
 684    return ret;
 685 }
 686
 687 static void
 688 _end_set(Evas_Object *obj, Evas_Object *end)
 689 {
 690    Widget_Data *wd = elm_widget_data_get(obj);
 691    if (!wd) return;
 692    if (wd->end == end) return;
 693    if (wd->end) evas_object_del(wd->end);
 694    wd->end = end;
 695    if (end)
 696      {
 697         elm_widget_sub_object_add(obj, end);
 698         evas_object_event_callback_add(end, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 699                                        _changed_size_hints, obj);
 700         edje_object_part_swallow(wd->slider, "elm.swallow.end", end);
 701         edje_object_signal_emit(wd->slider, "elm,state,end,visible", "elm");
 702         edje_object_message_signal_process(wd->slider);
 703      }
 704    _sizing_eval(obj);
 705 }
 706
 707 static Evas_Object *
 708 _end_unset(Evas_Object *obj)
 709 {
 710    Widget_Data *wd = elm_widget_data_get(obj);
 711    Evas_Object *ret = NULL;
 712    if (!wd) return NULL;
 713    if (wd->end)
 714      {
 715         elm_widget_sub_object_del(obj, wd->end);
 716         evas_object_event_callback_del_full(wd->end,
 717                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 718                                             _changed_size_hints, obj);
 719         ret = wd->end;
 720         edje_object_part_unswallow(wd->slider, wd->end);
 721         edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 722         wd->end = NULL;
 723         _sizing_eval(obj);
 724      }
 725    return ret;
 726 }
 727
 728 static void
 729 _content_set_hook(Evas_Object *obj, const char *part, Evas_Object *content)
 730 {
 731    ELM_CHECK_WIDTYPE(obj, widtype);
 732    if (!part || !strcmp(part, "icon"))
 733      _icon_set(obj, content);
 734    else if (!strcmp(part, "end"))
 735      _end_set(obj, content);
 736 }
 737
 738 static Evas_Object *
 739 _content_get_hook(const Evas_Object *obj, const char *part)
 740 {
 741    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 742    Widget_Data *wd;
 743    wd = elm_widget_data_get(obj);
 744    if (!wd) return NULL;
 745    if (!part || !strcmp(part, "icon"))
 746      return wd->icon;
 747    else if (!strcmp(part, "end"))
 748      return wd->end;
 749    return NULL;
 750 }
 751
 752 static Evas_Object *
 753 _content_unset_hook(Evas_Object *obj, const char *part)
 754 {
 755    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 756    if (!part || !strcmp(part, "icon"))
 757      return _icon_unset(obj);
 758    else if (!strcmp(part, "end"))
 759      return _end_unset(obj);
 760    return NULL;
 761 }
 762
 763 static void
 764 _hash_labels_free_cb(void* label)
 765 {
 766   if (label)
 767     eina_stringshare_del(label);
 768 }
 769
 770 EAPI Evas_Object *
 771 elm_slider_add(Evas_Object *parent)
 772 {
 773    Evas_Object *obj;
 774    Evas *e;
 775    Widget_Data *wd;
 776
 777    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 778
 779    ELM_SET_WIDTYPE(widtype, "slider");
 780    elm_widget_type_set(obj, "slider");
 781    elm_widget_sub_object_add(parent, obj);
 782    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 783    elm_widget_data_set(obj, wd);
 784    elm_widget_del_hook_set(obj, _del_hook);
 785    elm_widget_theme_hook_set(obj, _theme_hook);
 786    elm_widget_disable_hook_set(obj, _disable_hook);
 787    elm_widget_can_focus_set(obj, EINA_TRUE);
 788    elm_widget_event_hook_set(obj, _event_hook);
 789    elm_widget_text_set_hook_set(obj, _elm_slider_label_set);
 790    elm_widget_text_get_hook_set(obj, _elm_slider_label_get);
 791    elm_widget_content_set_hook_set(obj, _content_set_hook);
 792    elm_widget_content_get_hook_set(obj, _content_get_hook);
 793    elm_widget_content_unset_hook_set(obj, _content_unset_hook);
 794
 795    wd->horizontal = EINA_TRUE;
 796    wd->indicator_show = EINA_TRUE;
 797    wd->val = 0.0;
 798    wd->val_min = 0.0;
 799    wd->val_max = 1.0;
 800    wd->labels = eina_hash_string_superfast_new(_hash_labels_free_cb);
 801
 802    wd->slider = edje_object_add(e);
 803    _elm_theme_object_set(obj, wd->slider, "slider", "horizontal", "default");
 804    elm_widget_resize_object_set(obj, wd->slider);
 805    edje_object_signal_callback_add(wd->slider, "drag", "*", _drag, obj);
 806    edje_object_signal_callback_add(wd->slider, "drag,start", "*", _drag_start, obj);
 807    edje_object_signal_callback_add(wd->slider, "drag,stop", "*", _drag_stop, obj);
 808    edje_object_signal_callback_add(wd->slider, "drag,step", "*", _drag_step, obj);
 809    edje_object_signal_callback_add(wd->slider, "drag,page", "*", _drag_stop, obj);
 810    //   edje_object_signal_callback_add(wd->slider, "drag,set", "*", _drag_stop, obj);
 811    edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", 0.0, 0.0);
 812
 813    wd->spacer = evas_object_rectangle_add(e);
 814    evas_object_color_set(wd->spacer, 0, 0, 0, 0);
 815    evas_object_pass_events_set(wd->spacer, EINA_TRUE);
 816    elm_widget_sub_object_add(obj, wd->spacer);
 817    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 818    evas_object_event_callback_add(wd->spacer, EVAS_CALLBACK_MOUSE_DOWN, _spacer_down_cb, obj);
 819    evas_object_event_callback_add(wd->spacer, EVAS_CALLBACK_MOUSE_MOVE, _spacer_move_cb, obj);
 820    evas_object_event_callback_add(wd->spacer, EVAS_CALLBACK_MOUSE_UP, _spacer_up_cb, obj);
 821    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 822
 823    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 824    _sizing_eval(obj);
 825
 826    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 827    // TODO: and save some bytes, making descriptions per-class and not instance!
 828    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 829    return obj;
 830 }
 831
 832 EAPI void
 833 elm_slider_label_set(Evas_Object *obj, const char *label)
 834 {
 835    _elm_slider_label_set(obj, NULL, label);
 836 }
 837
 838 EAPI const char *
 839 elm_slider_label_get(const Evas_Object *obj)
 840 {
 841    return _elm_slider_label_get(obj, NULL);
 842 }
 843
 844 EAPI void
 845 elm_slider_icon_set(Evas_Object *obj, Evas_Object *icon)
 846 {
 847    _content_set_hook(obj, "icon", icon);
 848 }
 849
 850 EAPI Evas_Object *
 851 elm_slider_icon_unset(Evas_Object *obj)
 852 {
 853    return _content_unset_hook(obj, "icon");
 854 }
 855
 856 EAPI Evas_Object *
 857 elm_slider_icon_get(const Evas_Object *obj)
 858 {
 859    return _content_get_hook(obj, "icon");
 860 }
 861
 862 EAPI void
 863 elm_slider_span_size_set(Evas_Object *obj, Evas_Coord size)
 864 {
 865    ELM_CHECK_WIDTYPE(obj, widtype);
 866    Widget_Data *wd = elm_widget_data_get(obj);
 867    if (!wd) return;
 868    if (wd->size == size) return;
 869    wd->size = size;
 870    if (wd->horizontal)
 871      evas_object_size_hint_min_set(wd->spacer, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale, 1);
 872    else
 873      evas_object_size_hint_min_set(wd->spacer, 1, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale);
 874    if (wd->indicator_show)
 875      edje_object_signal_emit(wd->slider, "elm,state,val,show", "elm");
 876    else
 877      edje_object_signal_emit(wd->slider, "elm,state,val,hide", "elm");
 878    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 879    _sizing_eval(obj);
 880 }
 881
 882 EAPI Evas_Coord
 883 elm_slider_span_size_get(const Evas_Object *obj)
 884 {
 885    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 886    Widget_Data *wd = elm_widget_data_get(obj);
 887    if (!wd) return 0;
 888    return wd->size;
 889 }
 890
 891 EAPI void
 892 elm_slider_unit_format_set(Evas_Object *obj, const char *units)
 893 {
 894    ELM_CHECK_WIDTYPE(obj, widtype);
 895    Widget_Data *wd = elm_widget_data_get(obj);
 896    if (!wd) return;
 897    eina_stringshare_replace(&wd->units, units);
 898    if (units)
 899      {
 900         edje_object_signal_emit(wd->slider, "elm,state,units,visible", "elm");
 901         edje_object_message_signal_process(wd->slider);
 902      }
 903    else
 904      {
 905         edje_object_signal_emit(wd->slider, "elm,state,units,hidden", "elm");
 906         edje_object_message_signal_process(wd->slider);
 907      }
 908    _units_set(obj);
 909    _sizing_eval(obj);
 910 }
 911
 912 EAPI const char *
 913 elm_slider_unit_format_get(const Evas_Object *obj)
 914 {
 915    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 916    Widget_Data *wd = elm_widget_data_get(obj);
 917    if (!wd) return NULL;
 918    return wd->units;
 919 }
 920
 921 EAPI void
 922 elm_slider_indicator_format_set(Evas_Object *obj, const char *indicator)
 923 {
 924    ELM_CHECK_WIDTYPE(obj, widtype);
 925    Widget_Data *wd = elm_widget_data_get(obj);
 926    if (!wd) return;
 927    eina_stringshare_replace(&wd->indicator, indicator);
 928    _indicator_set(obj);
 929 }
 930
 931 EAPI const char *
 932 elm_slider_indicator_format_get(const Evas_Object *obj)
 933 {
 934    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 935    Widget_Data *wd = elm_widget_data_get(obj);
 936    if (!wd) return NULL;
 937    return wd->indicator;
 938 }
 939
 940 EAPI void
 941 elm_slider_horizontal_set(Evas_Object *obj, Eina_Bool horizontal)
 942 {
 943    ELM_CHECK_WIDTYPE(obj, widtype);
 944    Widget_Data *wd = elm_widget_data_get(obj);
 945    if (!wd) return;
 946    horizontal = !!horizontal;
 947    if (wd->horizontal == horizontal) return;
 948    wd->horizontal = horizontal;
 949    _theme_hook(obj);
 950 }
 951
 952 EAPI Eina_Bool
 953 elm_slider_horizontal_get(const Evas_Object *obj)
 954 {
 955    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 956    Widget_Data *wd = elm_widget_data_get(obj);
 957    if (!wd) return EINA_FALSE;
 958    return wd->horizontal;
 959 }
 960
 961 EAPI void
 962 elm_slider_min_max_set(Evas_Object *obj, double min, double max)
 963 {
 964    ELM_CHECK_WIDTYPE(obj, widtype);
 965    Widget_Data *wd = elm_widget_data_get(obj);
 966    if (!wd) return;
 967    if ((wd->val_min == min) && (wd->val_max == max)) return;
 968    wd->val_min = min;
 969    wd->val_max = max;
 970    if (wd->val < wd->val_min) wd->val = wd->val_min;
 971    if (wd->val > wd->val_max) wd->val = wd->val_max;
 972    _val_set(obj);
 973    _units_set(obj);
 974    _indicator_set(obj);
 975 }
 976
 977 EAPI void
 978 elm_slider_min_max_get(const Evas_Object *obj, double *min, double *max)
 979 {
 980    if (min) *min = 0.0;
 981    if (max) *max = 0.0;
 982    ELM_CHECK_WIDTYPE(obj, widtype);
 983    Widget_Data *wd = elm_widget_data_get(obj);
 984    if (!wd) return;
 985    if (min) *min = wd->val_min;
 986    if (max) *max = wd->val_max;
 987 }
 988
 989 EAPI void
 990 elm_slider_value_set(Evas_Object *obj, double val)
 991 {
 992    ELM_CHECK_WIDTYPE(obj, widtype);
 993    Widget_Data *wd = elm_widget_data_get(obj);
 994    if (!wd) return;
 995    if (wd->val == val) return;
 996    wd->val = val;
 997    if (wd->val < wd->val_min) wd->val = wd->val_min;
 998    if (wd->val > wd->val_max) wd->val = wd->val_max;
 999    edje_object_signal_emit(wd->slider, "elm,state,drag", "elm");
1000    _val_set(obj);
1001    _units_set(obj);
1002    _indicator_set(obj);
1003 }
1004
1005 EAPI double
1006 elm_slider_value_get(const Evas_Object *obj)
1007 {
1008    ELM_CHECK_WIDTYPE(obj, widtype) 0.0;
1009    Widget_Data *wd = elm_widget_data_get(obj);
1010    if (!wd) return 0.0;
1011    return wd->val;
1012 }
1013
1014 EAPI void
1015 elm_slider_inverted_set(Evas_Object *obj, Eina_Bool inverted)
1016 {
1017    ELM_CHECK_WIDTYPE(obj, widtype);
1018    Widget_Data *wd = elm_widget_data_get(obj);
1019    if (!wd) return;
1020    inverted = !!inverted;
1021    if (wd->inverted == inverted) return;
1022    wd->inverted = inverted;
1023    if (wd->inverted)
1024      edje_object_signal_emit(wd->slider, "elm,state,inverted,on", "elm");
1025    else
1026      edje_object_signal_emit(wd->slider, "elm,state,inverted,off", "elm");
1027    edje_object_message_signal_process(wd->slider);
1028    _val_set(obj);
1029    _units_set(obj);
1030    _indicator_set(obj);
1031 }
1032
1033 EAPI Eina_Bool
1034 elm_slider_inverted_get(const Evas_Object *obj)
1035 {
1036    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
1037    Widget_Data *wd = elm_widget_data_get(obj);
1038    if (!wd) return EINA_FALSE;
1039    return wd->inverted;
1040 }
1041
1042 EAPI void
1043 elm_slider_indicator_format_function_set(Evas_Object *obj, const char *(*func)(double val), void (*free_func)(const char *str))
1044 {
1045    ELM_CHECK_WIDTYPE(obj, widtype);
1046    Widget_Data *wd = elm_widget_data_get(obj);
1047    if (!wd) return;
1048    wd->indicator_format_func = func;
1049    wd->indicator_format_free = free_func;
1050    _indicator_set(obj);
1051 }
1052
1053 EAPI void
1054 elm_slider_units_format_function_set(Evas_Object *obj, const char *(*func)(double val), void (*free_func)(const char *str))
1055 {
1056    ELM_CHECK_WIDTYPE(obj, widtype);
1057    Widget_Data *wd = elm_widget_data_get(obj);
1058    if (!wd) return;
1059    wd->units_format_func = func;
1060    wd->units_format_free = free_func;
1061    _indicator_set(obj);
1062 }
1063
1064 EAPI void
1065 elm_slider_end_set(Evas_Object *obj, Evas_Object *end)
1066 {
1067    _content_set_hook(obj, "end", end);
1068 }
1069
1070 EAPI Evas_Object *
1071 elm_slider_end_unset(Evas_Object *obj)
1072 {
1073    return _content_unset_hook(obj, "end");
1074 }
1075
1076 EAPI Evas_Object *
1077 elm_slider_end_get(const Evas_Object *obj)
1078 {
1079    return _content_get_hook(obj, "end");
1080 }
1081
1082 EAPI void
1083 elm_slider_indicator_show_set(Evas_Object *obj, Eina_Bool show)
1084 {
1085    ELM_CHECK_WIDTYPE(obj, widtype);
1086    Widget_Data *wd = elm_widget_data_get(obj);
1087    if (show) {
1088         wd->indicator_show = EINA_TRUE;
1089         edje_object_signal_emit(wd->slider, "elm,state,val,show", "elm");
1090    }
1091    else {
1092         wd->indicator_show = EINA_FALSE;
1093         edje_object_signal_emit(wd->slider, "elm,state,val,hide", "elm");
1094    }
1095 }
1096
1097 EAPI Eina_Bool
1098 elm_slider_indicator_show_get(const Evas_Object *obj)
1099 {
1100    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
1101    Widget_Data *wd = elm_widget_data_get(obj);
1102    if (!wd) return EINA_FALSE;
1103    return wd->indicator_show;
1104 }
1105