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