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;
  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->labels) eina_hash_free(wd->labels);
 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 Eina_Bool
 167 _labels_foreach_text_set(const Eina_Hash *hash __UNUSED__, const void *key, void *data, void *fdata)
 168 {
 169   Widget_Data *wd = fdata;
 170
 171   edje_object_part_text_set(wd->slider, key, data);
 172
 173   return 1;
 174 }
 175
 176 static void
 177 _theme_hook(Evas_Object *obj)
 178 {
 179    Widget_Data *wd = elm_widget_data_get(obj);
 180    if (!wd) return;
 181    _elm_widget_mirrored_reload(obj);
 182    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 183    if (wd->horizontal)
 184      _elm_theme_object_set(obj, wd->slider, "slider", "horizontal", elm_widget_style_get(obj));
 185    else
 186      _elm_theme_object_set(obj, wd->slider, "slider", "vertical", elm_widget_style_get(obj));
 187    if (wd->icon)
 188      {
 189         edje_object_part_swallow(wd->slider, "elm.swallow.content", wd->icon);
 190         edje_object_signal_emit(wd->slider, "elm,state,icon,visible", "elm");
 191      }
 192    if (wd->end)
 193      edje_object_signal_emit(wd->slider, "elm,state,end,visible", "elm");
 194    else
 195      edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 196    if (wd->labels)
 197      {
 198         eina_hash_foreach(wd->labels, _labels_foreach_text_set, wd);
 199         edje_object_signal_emit(wd->slider, "elm,state,text,visible", "elm");
 200      }
 201
 202    if (wd->units)
 203      edje_object_signal_emit(wd->slider, "elm,state,units,visible", "elm");
 204
 205    if (wd->horizontal)
 206      evas_object_size_hint_min_set(wd->spacer, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale, 1);
 207    else
 208      evas_object_size_hint_min_set(wd->spacer, 1, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale);
 209
 210    if (wd->inverted)
 211      edje_object_signal_emit(wd->slider, "elm,state,inverted,on", "elm");
 212
 213    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 214    _units_set(obj);
 215    _indicator_set(obj);
 216    edje_object_message_signal_process(wd->slider);
 217    edje_object_scale_set(wd->slider, elm_widget_scale_get(obj) * _elm_config->scale);
 218    _val_set(obj);
 219    _sizing_eval(obj);
 220 }
 221
 222 static void
 223 _disable_hook(Evas_Object *obj)
 224 {
 225    Widget_Data *wd = elm_widget_data_get(obj);
 226    if (!wd) return;
 227    if (elm_widget_disabled_get(obj))
 228      edje_object_signal_emit(wd->slider, "elm,state,disabled", "elm");
 229    else
 230      edje_object_signal_emit(wd->slider, "elm,state,enabled", "elm");
 231 }
 232
 233 static void
 234 _sizing_eval(Evas_Object *obj)
 235 {
 236    Widget_Data *wd = elm_widget_data_get(obj);
 237    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 238    if (!wd) return;
 239    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 240    edje_object_size_min_restricted_calc(wd->slider, &minw, &minh, minw, minh);
 241    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 242    evas_object_size_hint_min_set(obj, minw, minh);
 243    evas_object_size_hint_max_set(obj, maxw, maxh);
 244 }
 245
 246 static void
 247 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 248 {
 249    Widget_Data *wd = elm_widget_data_get(data);
 250    if (!wd) return;
 251    if ((obj != wd->icon) && (obj != wd->end)) return;
 252    _sizing_eval(data);
 253 }
 254
 255 static void
 256 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 257 {
 258    Widget_Data *wd = elm_widget_data_get(obj);
 259    Evas_Object *sub = event_info;
 260    if (!wd) return;
 261    if (sub == wd->icon)
 262      {
 263         edje_object_signal_emit(wd->slider, "elm,state,icon,hidden", "elm");
 264         evas_object_event_callback_del_full
 265            (sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 266         wd->icon = NULL;
 267         edje_object_message_signal_process(wd->slider);
 268         _sizing_eval(obj);
 269      }
 270    if (sub == wd->end)
 271      {
 272         edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 273         evas_object_event_callback_del_full(sub,
 274                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 275                                             _changed_size_hints, obj);
 276         wd->end = NULL;
 277         edje_object_message_signal_process(wd->slider);
 278         _sizing_eval(obj);
 279      }
 280 }
 281
 282 static Eina_Bool
 283 _delay_change(void *data)
 284 {
 285    Widget_Data *wd = elm_widget_data_get(data);
 286    if (!wd) return ECORE_CALLBACK_CANCEL;
 287    wd->delay = NULL;
 288    evas_object_smart_callback_call(data, SIG_DELAY_CHANGED, NULL);
 289    return ECORE_CALLBACK_CANCEL;
 290 }
 291
 292 static void
 293 _val_fetch(Evas_Object *obj)
 294 {
 295    Eina_Bool rtl;
 296    Widget_Data *wd = elm_widget_data_get(obj);
 297    double posx = 0.0, posy = 0.0, pos = 0.0, val;
 298    if (!wd) return;
 299    edje_object_part_drag_value_get(wd->slider, "elm.dragable.slider",
 300                                    &posx, &posy);
 301    if (wd->horizontal) pos = posx;
 302    else pos = posy;
 303
 304    rtl = elm_widget_mirrored_get(obj);
 305    if ((!rtl && wd->inverted) || (rtl &&
 306                                   ((!wd->horizontal && wd->inverted) ||
 307                                    (wd->horizontal && !wd->inverted)))) pos = 1.0 - pos;
 308    val = (pos * (wd->val_max - wd->val_min)) + wd->val_min;
 309    if (val != wd->val)
 310      {
 311         wd->val = val;
 312         evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 313         if (wd->delay) ecore_timer_del(wd->delay);
 314         wd->delay = ecore_timer_add(0.2, _delay_change, obj);
 315      }
 316 }
 317
 318 static void
 319 _val_set(Evas_Object *obj)
 320 {
 321    Eina_Bool rtl;
 322    Widget_Data *wd = elm_widget_data_get(obj);
 323    double pos;
 324    if (!wd) return;
 325    if (wd->val_max > wd->val_min)
 326      pos = (wd->val - wd->val_min) / (wd->val_max - wd->val_min);
 327    else
 328      pos = 0.0;
 329    if (pos < 0.0) pos = 0.0;
 330    else if (pos > 1.0) pos = 1.0;
 331
 332    rtl = elm_widget_mirrored_get(obj);
 333    if ((!rtl && wd->inverted) || (rtl &&
 334                                   ((!wd->horizontal && wd->inverted) ||
 335                                    (wd->horizontal && !wd->inverted)))) pos = 1.0 - pos;
 336    edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", pos, pos);
 337 }
 338
 339 static void
 340 _units_set(Evas_Object *obj)
 341 {
 342    Widget_Data *wd = elm_widget_data_get(obj);
 343    if (!wd) return;
 344    if (wd->units_format_func)
 345      {
 346         const char *buf;
 347         buf = wd->units_format_func(wd->val);
 348         edje_object_part_text_set(wd->slider, "elm.units", buf);
 349         if (wd->units_format_free) wd->units_format_free(buf);
 350      }
 351    else if (wd->units)
 352      {
 353         char buf[1024];
 354
 355         snprintf(buf, sizeof(buf), wd->units, wd->val);
 356         edje_object_part_text_set(wd->slider, "elm.units", buf);
 357      }
 358    else
 359      edje_object_part_text_set(wd->slider, "elm.units", NULL);
 360 }
 361
 362 static void
 363 _indicator_set(Evas_Object *obj)
 364 {
 365    Widget_Data *wd = elm_widget_data_get(obj);
 366    if (!wd) return;
 367    if (wd->indicator_format_func)
 368      {
 369         const char *buf;
 370         buf = wd->indicator_format_func(wd->val);
 371         edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", buf);
 372         if (wd->indicator_format_free) wd->indicator_format_free(buf);
 373      }
 374    else if (wd->indicator)
 375      {
 376         char buf[1024];
 377         snprintf(buf, sizeof(buf), wd->indicator, wd->val);
 378         edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", buf);
 379      }
 380    else
 381      edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", NULL);
 382 }
 383
 384 static void
 385 _drag(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 386 {
 387    _val_fetch(data);
 388    _units_set(data);
 389    _indicator_set(data);
 390 }
 391
 392 static void
 393 _drag_start(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_START, NULL);
 397    _units_set(data);
 398    _indicator_set(data);
 399    elm_widget_scroll_freeze_push(data);
 400 }
 401
 402 static void
 403 _drag_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 404 {
 405    _val_fetch(data);
 406    evas_object_smart_callback_call(data, SIG_DRAG_STOP, NULL);
 407    _units_set(data);
 408    _indicator_set(data);
 409    elm_widget_scroll_freeze_pop(data);
 410 }
 411
 412 static void
 413 _drag_step(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 414 {
 415    _val_fetch(data);
 416    _units_set(data);
 417    _indicator_set(data);
 418 }
 419
 420 static void
 421 _drag_up(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 422 {
 423    double step;
 424    Widget_Data *wd;
 425
 426    wd = elm_widget_data_get(data);
 427    step = 0.05;
 428
 429    if (wd->inverted) step *= ELM_SLIDER_INVERTED_FACTOR;
 430
 431    edje_object_part_drag_step(wd->slider, "elm.dragable.slider", step, step);
 432 }
 433
 434 static void
 435 _drag_down(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 436 {
 437    double step;
 438    Widget_Data *wd;
 439
 440    wd = elm_widget_data_get(data);
 441    step = -0.05;
 442
 443    if (wd->inverted) step *= ELM_SLIDER_INVERTED_FACTOR;
 444
 445    edje_object_part_drag_step(wd->slider, "elm.dragable.slider", step, step);
 446 }
 447
 448 static void
 449 _spacer_cb(void *data, Evas *e, Evas_Object *obj __UNUSED__, void *event_info)
 450 {
 451    Widget_Data *wd = elm_widget_data_get(data);
 452    Evas_Event_Mouse_Down *ev = event_info;
 453    Evas_Coord x, y, w, h;
 454    double button_x, button_y;
 455    double prev_button_x, prev_button_y;
 456
 457    evas_object_geometry_get(wd->spacer, &x, &y, &w, &h);
 458    edje_object_part_drag_value_get(wd->slider, "elm.dragable.slider", &prev_button_x, &prev_button_y);
 459    button_x = prev_button_x;
 460    button_y = prev_button_y;
 461    if (wd->horizontal)
 462      {
 463         button_x = ((double)ev->canvas.x - (double)x) / (double)w;
 464         if (button_x > 1) button_x = 1;
 465         if (button_x < 0) button_x = 0;
 466      }
 467    else
 468      {
 469         button_y = ((double)ev->canvas.y - (double)y) / (double)h;
 470         if (button_y > 1) button_y = 1;
 471         if (button_y < 0) button_y = 0;
 472      }
 473    if (button_x != prev_button_x || button_y != prev_button_y)
 474      {
 475         edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", button_x, button_y);
 476      }
 477    else
 478      {
 479         evas_event_feed_mouse_cancel(e, 0, NULL);
 480         evas_event_feed_mouse_down(e, 1, EVAS_BUTTON_NONE, 0, NULL);
 481      }
 482 }
 483
 484 static void
 485 _elm_slider_label_set(Evas_Object *obj, const char *part, const char *label)
 486 {
 487    ELM_CHECK_WIDTYPE(obj, widtype);
 488    Widget_Data *wd = elm_widget_data_get(obj);
 489    const char* default_part = "elm.text";
 490    const char* real_part;
 491
 492    if (!wd) return;
 493
 494    if (!part)
 495      real_part = default_part;
 496    else
 497      real_part = part;
 498
 499    if (wd->labels)
 500      {
 501        const char* old_label;
 502
 503        old_label = eina_hash_find(wd->labels, real_part);
 504        if (!old_label)
 505            eina_hash_add(wd->labels, real_part, eina_stringshare_add(label));
 506        else
 507          {
 508            eina_stringshare_ref(old_label);
 509            eina_hash_modify(wd->labels, real_part, eina_stringshare_add(label));
 510            eina_stringshare_del(old_label);
 511          }
 512      }
 513
 514    if (label)
 515      {
 516         edje_object_signal_emit(wd->slider, "elm,state,text,visible", "elm");
 517         edje_object_message_signal_process(wd->slider);
 518      }
 519    else
 520      {
 521         edje_object_signal_emit(wd->slider, "elm,state,text,hidden", "elm");
 522         edje_object_message_signal_process(wd->slider);
 523      }
 524
 525    edje_object_part_text_set(wd->slider, real_part, label);
 526    _sizing_eval(obj);
 527 }
 528
 529 static const char *
 530 _elm_slider_label_get(const Evas_Object *obj, const char *part)
 531 {
 532    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 533    Widget_Data *wd = elm_widget_data_get(obj);
 534    if (!wd) return NULL;
 535    if (!wd->labels) return NULL;
 536
 537    if (!part)
 538      return eina_hash_find(wd->labels, "elm.text");
 539    return eina_hash_find(wd->labels, part);
 540 }
 541
 542 static void
 543 _icon_set(Evas_Object *obj, Evas_Object *icon)
 544 {
 545    Widget_Data *wd = elm_widget_data_get(obj);
 546    if (!wd) return;
 547    if (wd->icon == icon) return;
 548    if (wd->icon) evas_object_del(wd->icon);
 549    wd->icon = icon;
 550    if (icon)
 551      {
 552         elm_widget_sub_object_add(obj, icon);
 553         evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 554                                        _changed_size_hints, obj);
 555         edje_object_part_swallow(wd->slider, "elm.swallow.icon", icon);
 556         edje_object_signal_emit(wd->slider, "elm,state,icon,visible", "elm");
 557         edje_object_message_signal_process(wd->slider);
 558      }
 559    _sizing_eval(obj);
 560 }
 561
 562 static Evas_Object *
 563 _icon_unset(Evas_Object *obj)
 564 {
 565    Widget_Data *wd = elm_widget_data_get(obj);
 566    Evas_Object *ret = NULL;
 567    if (!wd) return NULL;
 568    if (wd->icon)
 569      {
 570         elm_widget_sub_object_del(obj, wd->icon);
 571         evas_object_event_callback_del_full(wd->icon,
 572                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 573                                             _changed_size_hints, obj);
 574         ret = wd->icon;
 575         edje_object_part_unswallow(wd->slider, wd->icon);
 576         edje_object_signal_emit(wd->slider, "elm,state,icon,hidden", "elm");
 577         wd->icon = NULL;
 578         _sizing_eval(obj);
 579      }
 580    return ret;
 581 }
 582
 583 static void
 584 _end_set(Evas_Object *obj, Evas_Object *end)
 585 {
 586    Widget_Data *wd = elm_widget_data_get(obj);
 587    if (!wd) return;
 588    if (wd->end == end) return;
 589    if (wd->end) evas_object_del(wd->end);
 590    wd->end = end;
 591    if (end)
 592      {
 593         elm_widget_sub_object_add(obj, end);
 594         evas_object_event_callback_add(end, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 595                                        _changed_size_hints, obj);
 596         edje_object_part_swallow(wd->slider, "elm.swallow.end", end);
 597         edje_object_signal_emit(wd->slider, "elm,state,end,visible", "elm");
 598         edje_object_message_signal_process(wd->slider);
 599      }
 600    _sizing_eval(obj);
 601 }
 602
 603 static Evas_Object *
 604 _end_unset(Evas_Object *obj)
 605 {
 606    Widget_Data *wd = elm_widget_data_get(obj);
 607    Evas_Object *ret = NULL;
 608    if (!wd) return NULL;
 609    if (wd->end)
 610      {
 611         elm_widget_sub_object_del(obj, wd->end);
 612         evas_object_event_callback_del_full(wd->end,
 613                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 614                                             _changed_size_hints, obj);
 615         ret = wd->end;
 616         edje_object_part_unswallow(wd->slider, wd->end);
 617         edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 618         wd->end = NULL;
 619         _sizing_eval(obj);
 620      }
 621    return ret;
 622 }
 623
 624 static void
 625 _content_set_hook(Evas_Object *obj, const char *part, Evas_Object *content)
 626 {
 627    ELM_CHECK_WIDTYPE(obj, widtype);
 628    if (!part || !strcmp(part, "icon"))
 629      _icon_set(obj, content);
 630    else if (!strcmp(part, "end"))
 631      _end_set(obj, content);
 632 }
 633
 634 static Evas_Object *
 635 _content_get_hook(const Evas_Object *obj, const char *part)
 636 {
 637    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 638    Widget_Data *wd;
 639    wd = elm_widget_data_get(obj);
 640    if (!wd) return NULL;
 641    if (!part || !strcmp(part, "icon"))
 642      return wd->icon;
 643    else if (!strcmp(part, "end"))
 644      return wd->end;
 645    return NULL;
 646 }
 647
 648 static Evas_Object *
 649 _content_unset_hook(Evas_Object *obj, const char *part)
 650 {
 651    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 652    if (!part || !strcmp(part, "icon"))
 653      return _icon_unset(obj);
 654    else if (!strcmp(part, "end"))
 655      return _end_unset(obj);
 656    return NULL;
 657 }
 658
 659 static void
 660 _hash_labels_free_cb(void* label)
 661 {
 662   if (label)
 663     eina_stringshare_del(label);
 664 }
 665
 666 EAPI Evas_Object *
 667 elm_slider_add(Evas_Object *parent)
 668 {
 669    Evas_Object *obj;
 670    Evas *e;
 671    Widget_Data *wd;
 672
 673    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 674
 675    ELM_SET_WIDTYPE(widtype, "slider");
 676    elm_widget_type_set(obj, "slider");
 677    elm_widget_sub_object_add(parent, obj);
 678    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 679    elm_widget_data_set(obj, wd);
 680    elm_widget_del_hook_set(obj, _del_hook);
 681    elm_widget_theme_hook_set(obj, _theme_hook);
 682    elm_widget_disable_hook_set(obj, _disable_hook);
 683    elm_widget_can_focus_set(obj, EINA_TRUE);
 684    elm_widget_event_hook_set(obj, _event_hook);
 685    elm_widget_text_set_hook_set(obj, _elm_slider_label_set);
 686    elm_widget_text_get_hook_set(obj, _elm_slider_label_get);
 687    elm_widget_content_set_hook_set(obj, _content_set_hook);
 688    elm_widget_content_get_hook_set(obj, _content_get_hook);
 689    elm_widget_content_unset_hook_set(obj, _content_unset_hook);
 690
 691    wd->horizontal = EINA_TRUE;
 692    wd->indicator_show = EINA_TRUE;
 693    wd->val = 0.0;
 694    wd->val_min = 0.0;
 695    wd->val_max = 1.0;
 696    wd->labels = eina_hash_string_superfast_new(_hash_labels_free_cb);
 697
 698    wd->slider = edje_object_add(e);
 699    _elm_theme_object_set(obj, wd->slider, "slider", "horizontal", "default");
 700    elm_widget_resize_object_set(obj, wd->slider);
 701    edje_object_signal_callback_add(wd->slider, "drag", "*", _drag, obj);
 702    edje_object_signal_callback_add(wd->slider, "drag,start", "*", _drag_start, obj);
 703    edje_object_signal_callback_add(wd->slider, "drag,stop", "*", _drag_stop, obj);
 704    edje_object_signal_callback_add(wd->slider, "drag,step", "*", _drag_step, obj);
 705    edje_object_signal_callback_add(wd->slider, "drag,page", "*", _drag_stop, obj);
 706    //   edje_object_signal_callback_add(wd->slider, "drag,set", "*", _drag_stop, obj);
 707    edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", 0.0, 0.0);
 708
 709    wd->spacer = evas_object_rectangle_add(e);
 710    evas_object_color_set(wd->spacer, 0, 0, 0, 0);
 711    evas_object_pass_events_set(wd->spacer, EINA_TRUE);
 712    elm_widget_sub_object_add(obj, wd->spacer);
 713    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 714    evas_object_event_callback_add(wd->spacer, EVAS_CALLBACK_MOUSE_DOWN, _spacer_cb, obj);
 715    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 716
 717    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 718    _sizing_eval(obj);
 719
 720    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 721    // TODO: and save some bytes, making descriptions per-class and not instance!
 722    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 723    return obj;
 724 }
 725
 726 EAPI void
 727 elm_slider_label_set(Evas_Object *obj, const char *label)
 728 {
 729    _elm_slider_label_set(obj, NULL, label);
 730 }
 731
 732 EAPI const char *
 733 elm_slider_label_get(const Evas_Object *obj)
 734 {
 735    return _elm_slider_label_get(obj, NULL);
 736 }
 737
 738 EAPI void
 739 elm_slider_icon_set(Evas_Object *obj, Evas_Object *icon)
 740 {
 741    _content_set_hook(obj, "icon", icon);
 742 }
 743
 744 EAPI Evas_Object *
 745 elm_slider_icon_unset(Evas_Object *obj)
 746 {
 747    return _content_unset_hook(obj, "icon");
 748 }
 749
 750 EAPI Evas_Object *
 751 elm_slider_icon_get(const Evas_Object *obj)
 752 {
 753    return _content_get_hook(obj, "icon");
 754 }
 755
 756 EAPI void
 757 elm_slider_span_size_set(Evas_Object *obj, Evas_Coord size)
 758 {
 759    ELM_CHECK_WIDTYPE(obj, widtype);
 760    Widget_Data *wd = elm_widget_data_get(obj);
 761    if (!wd) return;
 762    if (wd->size == size) return;
 763    wd->size = size;
 764    if (wd->horizontal)
 765      evas_object_size_hint_min_set(wd->spacer, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale, 1);
 766    else
 767      evas_object_size_hint_min_set(wd->spacer, 1, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale);
 768    if (wd->indicator_show)
 769      edje_object_signal_emit(wd->slider, "elm,state,val,show", "elm");
 770    else
 771      edje_object_signal_emit(wd->slider, "elm,state,val,hide", "elm");
 772    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 773    _sizing_eval(obj);
 774 }
 775
 776 EAPI Evas_Coord
 777 elm_slider_span_size_get(const Evas_Object *obj)
 778 {
 779    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 780    Widget_Data *wd = elm_widget_data_get(obj);
 781    if (!wd) return 0;
 782    return wd->size;
 783 }
 784
 785 EAPI void
 786 elm_slider_unit_format_set(Evas_Object *obj, const char *units)
 787 {
 788    ELM_CHECK_WIDTYPE(obj, widtype);
 789    Widget_Data *wd = elm_widget_data_get(obj);
 790    if (!wd) return;
 791    eina_stringshare_replace(&wd->units, units);
 792    if (units)
 793      {
 794         edje_object_signal_emit(wd->slider, "elm,state,units,visible", "elm");
 795         edje_object_message_signal_process(wd->slider);
 796      }
 797    else
 798      {
 799         edje_object_signal_emit(wd->slider, "elm,state,units,hidden", "elm");
 800         edje_object_message_signal_process(wd->slider);
 801      }
 802    _units_set(obj);
 803    _sizing_eval(obj);
 804 }
 805
 806 EAPI const char *
 807 elm_slider_unit_format_get(const Evas_Object *obj)
 808 {
 809    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 810    Widget_Data *wd = elm_widget_data_get(obj);
 811    if (!wd) return NULL;
 812    return wd->units;
 813 }
 814
 815 EAPI void
 816 elm_slider_indicator_format_set(Evas_Object *obj, const char *indicator)
 817 {
 818    ELM_CHECK_WIDTYPE(obj, widtype);
 819    Widget_Data *wd = elm_widget_data_get(obj);
 820    if (!wd) return;
 821    eina_stringshare_replace(&wd->indicator, indicator);
 822    _indicator_set(obj);
 823 }
 824
 825 EAPI const char *
 826 elm_slider_indicator_format_get(const Evas_Object *obj)
 827 {
 828    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 829    Widget_Data *wd = elm_widget_data_get(obj);
 830    if (!wd) return NULL;
 831    return wd->indicator;
 832 }
 833
 834 EAPI void
 835 elm_slider_horizontal_set(Evas_Object *obj, Eina_Bool horizontal)
 836 {
 837    ELM_CHECK_WIDTYPE(obj, widtype);
 838    Widget_Data *wd = elm_widget_data_get(obj);
 839    if (!wd) return;
 840    horizontal = !!horizontal;
 841    if (wd->horizontal == horizontal) return;
 842    wd->horizontal = horizontal;
 843    _theme_hook(obj);
 844 }
 845
 846 EAPI Eina_Bool
 847 elm_slider_horizontal_get(const Evas_Object *obj)
 848 {
 849    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 850    Widget_Data *wd = elm_widget_data_get(obj);
 851    if (!wd) return EINA_FALSE;
 852    return wd->horizontal;
 853 }
 854
 855 EAPI void
 856 elm_slider_min_max_set(Evas_Object *obj, double min, double max)
 857 {
 858    ELM_CHECK_WIDTYPE(obj, widtype);
 859    Widget_Data *wd = elm_widget_data_get(obj);
 860    if (!wd) return;
 861    if ((wd->val_min == min) && (wd->val_max == max)) return;
 862    wd->val_min = min;
 863    wd->val_max = max;
 864    if (wd->val < wd->val_min) wd->val = wd->val_min;
 865    if (wd->val > wd->val_max) wd->val = wd->val_max;
 866    _val_set(obj);
 867    _units_set(obj);
 868    _indicator_set(obj);
 869 }
 870
 871 EAPI void
 872 elm_slider_min_max_get(const Evas_Object *obj, double *min, double *max)
 873 {
 874    if (min) *min = 0.0;
 875    if (max) *max = 0.0;
 876    ELM_CHECK_WIDTYPE(obj, widtype);
 877    Widget_Data *wd = elm_widget_data_get(obj);
 878    if (!wd) return;
 879    if (min) *min = wd->val_min;
 880    if (max) *max = wd->val_max;
 881 }
 882
 883 EAPI void
 884 elm_slider_value_set(Evas_Object *obj, double val)
 885 {
 886    ELM_CHECK_WIDTYPE(obj, widtype);
 887    Widget_Data *wd = elm_widget_data_get(obj);
 888    if (!wd) return;
 889    if (wd->val == val) return;
 890    wd->val = val;
 891    if (wd->val < wd->val_min) wd->val = wd->val_min;
 892    if (wd->val > wd->val_max) wd->val = wd->val_max;
 893    _val_set(obj);
 894    _units_set(obj);
 895    _indicator_set(obj);
 896 }
 897
 898 EAPI double
 899 elm_slider_value_get(const Evas_Object *obj)
 900 {
 901    ELM_CHECK_WIDTYPE(obj, widtype) 0.0;
 902    Widget_Data *wd = elm_widget_data_get(obj);
 903    if (!wd) return 0.0;
 904    return wd->val;
 905 }
 906
 907 EAPI void
 908 elm_slider_inverted_set(Evas_Object *obj, Eina_Bool inverted)
 909 {
 910    ELM_CHECK_WIDTYPE(obj, widtype);
 911    Widget_Data *wd = elm_widget_data_get(obj);
 912    if (!wd) return;
 913    inverted = !!inverted;
 914    if (wd->inverted == inverted) return;
 915    wd->inverted = inverted;
 916    if (wd->inverted)
 917      edje_object_signal_emit(wd->slider, "elm,state,inverted,on", "elm");
 918    else
 919      edje_object_signal_emit(wd->slider, "elm,state,inverted,off", "elm");
 920    edje_object_message_signal_process(wd->slider);
 921    _val_set(obj);
 922    _units_set(obj);
 923    _indicator_set(obj);
 924 }
 925
 926 EAPI Eina_Bool
 927 elm_slider_inverted_get(const Evas_Object *obj)
 928 {
 929    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 930    Widget_Data *wd = elm_widget_data_get(obj);
 931    if (!wd) return EINA_FALSE;
 932    return wd->inverted;
 933 }
 934
 935 EAPI void
 936 elm_slider_indicator_format_function_set(Evas_Object *obj, const char *(*func)(double val), void (*free_func)(const char *str))
 937 {
 938    ELM_CHECK_WIDTYPE(obj, widtype);
 939    Widget_Data *wd = elm_widget_data_get(obj);
 940    if (!wd) return;
 941    wd->indicator_format_func = func;
 942    wd->indicator_format_free = free_func;
 943    _indicator_set(obj);
 944 }
 945
 946 EAPI void
 947 elm_slider_units_format_function_set(Evas_Object *obj, const char *(*func)(double val), void (*free_func)(const char *str))
 948 {
 949    ELM_CHECK_WIDTYPE(obj, widtype);
 950    Widget_Data *wd = elm_widget_data_get(obj);
 951    if (!wd) return;
 952    wd->units_format_func = func;
 953    wd->units_format_free = free_func;
 954    _indicator_set(obj);
 955 }
 956
 957 EAPI void
 958 elm_slider_end_set(Evas_Object *obj, Evas_Object *end)
 959 {
 960    _content_set_hook(obj, "end", end);
 961 }
 962
 963 EAPI Evas_Object *
 964 elm_slider_end_unset(Evas_Object *obj)
 965 {
 966    return _content_unset_hook(obj, "end");
 967 }
 968
 969 EAPI Evas_Object *
 970 elm_slider_end_get(const Evas_Object *obj)
 971 {
 972    return _content_get_hook(obj, "end");
 973 }
 974
 975 EAPI void
 976 elm_slider_indicator_show_set(Evas_Object *obj, Eina_Bool show)
 977 {
 978    ELM_CHECK_WIDTYPE(obj, widtype);
 979    Widget_Data *wd = elm_widget_data_get(obj);
 980    if (show) {
 981         wd->indicator_show = EINA_TRUE;
 982         edje_object_signal_emit(wd->slider, "elm,state,val,show", "elm");
 983    }
 984    else {
 985         wd->indicator_show = EINA_FALSE;
 986         edje_object_signal_emit(wd->slider, "elm,state,val,hide", "elm");
 987    }
 988 }
 989
 990 EAPI Eina_Bool
 991 elm_slider_indicator_show_get(const Evas_Object *obj)
 992 {
 993    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 994    Widget_Data *wd = elm_widget_data_get(obj);
 995    if (!wd) return EINA_FALSE;
 996    return wd->indicator_show;
 997 }
 998