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