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