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