src/lib/elm_slider.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 typedef struct _Widget_Data Widget_Data;
   5
   6 struct _Widget_Data
   7 {
   8    Evas_Object *slider;
   9    Evas_Object *icon;
  10    Evas_Object *end;
  11    Evas_Object *spacer;
  12
  13    Ecore_Timer *delay;
  14
  15    Eina_Hash  *labels;
  16    const char *units;
  17    const char *indicator;
  18
  19    const char *(*indicator_format_func)(double val);
  20    void (*indicator_format_free)(const char *str);
  21
  22    const char *(*units_format_func)(double val);
  23    void (*units_format_free)(const char *str);
  24
  25    double val, val_min, val_max;
  26    Evas_Coord size;
  27
  28    Eina_Bool horizontal : 1;
  29    Eina_Bool inverted : 1;
  30    Eina_Bool indicator_show : 1;
  31 };
  32
  33 #define ELM_SLIDER_INVERTED_FACTOR (-1.0)
  34
  35 static const char *widtype = NULL;
  36 static void _del_hook(Evas_Object *obj);
  37 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  38 static void _theme_hook(Evas_Object *obj);
  39 static void _disable_hook(Evas_Object *obj);
  40 static void _sizing_eval(Evas_Object *obj);
  41 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
  42 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
  43 static void _units_set(Evas_Object *obj);
  44 static void _val_set(Evas_Object *obj);
  45 static void _indicator_set(Evas_Object *obj);
  46 static void _on_focus_hook(void *data, Evas_Object *obj);
  47 static void _drag_up(void *data, Evas_Object *obj,
  48                     const char *emission, const char *source);
  49 static void _drag_down(void *data, Evas_Object *obj,
  50                     const char *emission, const char *source);
  51 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  52                              Evas_Callback_Type type, void *event_info);
  53 static void _spacer_cb(void *data, Evas * e, Evas_Object * obj, void *event_info);
  54
  55 static const char SIG_CHANGED[] = "changed";
  56 static const char SIG_DELAY_CHANGED[] = "delay,changed";
  57 static const char SIG_DRAG_START[] = "slider,drag,start";
  58 static const char SIG_DRAG_STOP[] = "slider,drag,stop";
  59 static const Evas_Smart_Cb_Description _signals[] = {
  60   {SIG_CHANGED, ""},
  61   {SIG_DELAY_CHANGED, ""},
  62   {SIG_DRAG_START, ""},
  63   {SIG_DRAG_STOP, ""},
  64   {NULL, NULL}
  65 };
  66
  67 static Eina_Bool
  68 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  69 {
  70    Evas_Event_Mouse_Wheel *mev;
  71    Evas_Event_Key_Down *ev;
  72    Widget_Data *wd;
  73
  74    wd = elm_widget_data_get(obj);
  75    if (!wd) return EINA_FALSE;
  76
  77    if (type == EVAS_CALLBACK_KEY_DOWN) goto key_down;
  78    else if (type != EVAS_CALLBACK_MOUSE_WHEEL) return EINA_FALSE;
  79
  80    mev = event_info;
  81    if (mev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  82    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  83
  84    if (mev->z < 0) _drag_up(obj, NULL, NULL, NULL);
  85    else _drag_down(obj, NULL, NULL, NULL);
  86    mev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  87    return EINA_TRUE;
  88
  89   key_down:
  90    ev = event_info;
  91    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  92    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  93    if ((!strcmp(ev->keyname, "Left"))
  94        || (!strcmp(ev->keyname, "KP_Left")))
  95      {
  96         if (!wd->horizontal) return EINA_FALSE;
  97         if (!wd->inverted) _drag_down(obj, NULL, NULL, NULL);
  98         else _drag_up(obj, NULL, NULL, NULL);
  99         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 100         return EINA_TRUE;
 101      }
 102    else if ((!strcmp(ev->keyname, "Right"))
 103             || (!strcmp(ev->keyname, "KP_Right")))
 104      {
 105         if (!wd->horizontal) return EINA_FALSE;
 106         if (!wd->inverted) _drag_up(obj, NULL, NULL, NULL);
 107         else _drag_down(obj, NULL, NULL, NULL);
 108         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 109         return EINA_TRUE;
 110      }
 111    else if ((!strcmp(ev->keyname, "Up")) || (!strcmp(ev->keyname, "KP_Up")))
 112      {
 113         if (wd->horizontal) return EINA_FALSE;
 114         if (wd->inverted) _drag_up(obj, NULL, NULL, NULL);
 115         else _drag_down(obj, NULL, NULL, NULL);
 116         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 117         return EINA_TRUE;
 118      }
 119    else if ((!strcmp(ev->keyname, "Down")) || (!strcmp(ev->keyname, "KP_Down")))
 120      {
 121         if (wd->horizontal) return EINA_FALSE;
 122         if (wd->inverted) _drag_down(obj, NULL, NULL, NULL);
 123         else _drag_up(obj, NULL, NULL, NULL);
 124         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 125         return EINA_TRUE;
 126      }
 127    else return EINA_FALSE;
 128 }
 129
 130 static void
 131 _del_hook(Evas_Object *obj)
 132 {
 133    Widget_Data *wd = elm_widget_data_get(obj);
 134    if (!wd) return;
 135    if (wd->labels) eina_hash_free(wd->labels);
 136    if (wd->indicator) eina_stringshare_del(wd->units);
 137    if (wd->delay) ecore_timer_del(wd->delay);
 138    free(wd);
 139 }
 140
 141 static void
 142 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
 143 {
 144    Widget_Data *wd = elm_widget_data_get(obj);
 145    if (!wd) return;
 146    if (elm_widget_focus_get(obj))
 147      {
 148         edje_object_signal_emit(wd->slider, "elm,action,focus", "elm");
 149         evas_object_focus_set(wd->slider, EINA_TRUE);
 150      }
 151    else
 152      {
 153         edje_object_signal_emit(wd->slider, "elm,action,unfocus", "elm");
 154         evas_object_focus_set(wd->slider, EINA_FALSE);
 155      }
 156 }
 157
 158 static void
 159 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
 160 {
 161    Widget_Data *wd = elm_widget_data_get(obj);
 162    if (!wd) return;
 163    edje_object_mirrored_set(wd->slider, rtl);
 164 }
 165
 166 static Eina_Bool
 167 _labels_foreach_text_set(const Eina_Hash *hash __UNUSED__, const void *key, void *data, void *fdata)
 168 {
 169   Widget_Data *wd = fdata;
 170
 171   edje_object_part_text_set(wd->slider, key, data);
 172
 173   return 1;
 174 }
 175
 176 static void
 177 _theme_hook(Evas_Object *obj)
 178 {
 179    Widget_Data *wd = elm_widget_data_get(obj);
 180    if (!wd) return;
 181    _elm_widget_mirrored_reload(obj);
 182    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 183    if (wd->horizontal)
 184      _elm_theme_object_set(obj, wd->slider, "slider", "horizontal", elm_widget_style_get(obj));
 185    else
 186      _elm_theme_object_set(obj, wd->slider, "slider", "vertical", elm_widget_style_get(obj));
 187    if (wd->icon)
 188      {
 189         edje_object_part_swallow(wd->slider, "elm.swallow.content", wd->icon);
 190         edje_object_signal_emit(wd->slider, "elm,state,icon,visible", "elm");
 191      }
 192    if (wd->end)
 193      edje_object_signal_emit(wd->slider, "elm,state,end,visible", "elm");
 194    else
 195      edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 196    if (wd->labels)
 197      {
 198         eina_hash_foreach(wd->labels, _labels_foreach_text_set, wd);
 199         edje_object_signal_emit(wd->slider, "elm,state,text,visible", "elm");
 200      }
 201
 202    if (wd->units)
 203      edje_object_signal_emit(wd->slider, "elm,state,units,visible", "elm");
 204
 205    if (wd->horizontal)
 206      evas_object_size_hint_min_set(wd->spacer, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale, 1);
 207    else
 208      evas_object_size_hint_min_set(wd->spacer, 1, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale);
 209
 210    if (wd->inverted)
 211      edje_object_signal_emit(wd->slider, "elm,state,inverted,on", "elm");
 212
 213    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 214    _units_set(obj);
 215    _indicator_set(obj);
 216    edje_object_message_signal_process(wd->slider);
 217    edje_object_scale_set(wd->slider, elm_widget_scale_get(obj) * _elm_config->scale);
 218    _val_set(obj);
 219    _sizing_eval(obj);
 220 }
 221
 222 static void
 223 _disable_hook(Evas_Object *obj)
 224 {
 225    Widget_Data *wd = elm_widget_data_get(obj);
 226    if (!wd) return;
 227    if (elm_widget_disabled_get(obj))
 228      edje_object_signal_emit(wd->slider, "elm,state,disabled", "elm");
 229    else
 230      edje_object_signal_emit(wd->slider, "elm,state,enabled", "elm");
 231 }
 232
 233 static void
 234 _sizing_eval(Evas_Object *obj)
 235 {
 236    Widget_Data *wd = elm_widget_data_get(obj);
 237    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 238    if (!wd) return;
 239    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 240    edje_object_size_min_restricted_calc(wd->slider, &minw, &minh, minw, minh);
 241    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 242    evas_object_size_hint_min_set(obj, minw, minh);
 243    evas_object_size_hint_max_set(obj, maxw, maxh);
 244 }
 245
 246 static void
 247 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 248 {
 249    Widget_Data *wd = elm_widget_data_get(data);
 250    if (!wd) return;
 251    if ((obj != wd->icon) && (obj != wd->end)) return;
 252    _sizing_eval(data);
 253 }
 254
 255 static void
 256 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 257 {
 258    Widget_Data *wd = elm_widget_data_get(obj);
 259    Evas_Object *sub = event_info;
 260    if (!wd) return;
 261    if (sub == wd->icon)
 262      {
 263         edje_object_signal_emit(wd->slider, "elm,state,icon,hidden", "elm");
 264         evas_object_event_callback_del_full
 265            (sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 266         wd->icon = NULL;
 267         edje_object_message_signal_process(wd->slider);
 268         _sizing_eval(obj);
 269      }
 270    if (sub == wd->end)
 271      {
 272         edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 273         evas_object_event_callback_del_full(sub,
 274                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 275                                             _changed_size_hints, obj);
 276         wd->end = NULL;
 277         edje_object_message_signal_process(wd->slider);
 278         _sizing_eval(obj);
 279      }
 280 }
 281
 282 static Eina_Bool
 283 _delay_change(void *data)
 284 {
 285    Widget_Data *wd = elm_widget_data_get(data);
 286    if (!wd) return ECORE_CALLBACK_CANCEL;
 287    wd->delay = NULL;
 288    evas_object_smart_callback_call(data, SIG_DELAY_CHANGED, NULL);
 289    return ECORE_CALLBACK_CANCEL;
 290 }
 291
 292 static void
 293 _val_fetch(Evas_Object *obj)
 294 {
 295    Eina_Bool rtl;
 296    Widget_Data *wd = elm_widget_data_get(obj);
 297    double posx = 0.0, posy = 0.0, pos = 0.0, val;
 298    if (!wd) return;
 299    edje_object_part_drag_value_get(wd->slider, "elm.dragable.slider",
 300                                    &posx, &posy);
 301    if (wd->horizontal) pos = posx;
 302    else pos = posy;
 303
 304    rtl = elm_widget_mirrored_get(obj);
 305    if ((!rtl && wd->inverted) || (rtl &&
 306                                   ((!wd->horizontal && wd->inverted) ||
 307                                    (wd->horizontal && !wd->inverted)))) pos = 1.0 - pos;
 308    val = (pos * (wd->val_max - wd->val_min)) + wd->val_min;
 309    if (val != wd->val)
 310      {
 311         wd->val = val;
 312         evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 313         if (wd->delay) ecore_timer_del(wd->delay);
 314         wd->delay = ecore_timer_add(0.2, _delay_change, obj);
 315      }
 316 }
 317
 318 static void
 319 _val_set(Evas_Object *obj)
 320 {
 321    Eina_Bool rtl;
 322    Widget_Data *wd = elm_widget_data_get(obj);
 323    double pos;
 324    if (!wd) return;
 325    if (wd->val_max > wd->val_min)
 326      pos = (wd->val - wd->val_min) / (wd->val_max - wd->val_min);
 327    else
 328      pos = 0.0;
 329    if (pos < 0.0) pos = 0.0;
 330    else if (pos > 1.0) pos = 1.0;
 331
 332    rtl = elm_widget_mirrored_get(obj);
 333    if ((!rtl && wd->inverted) || (rtl &&
 334                                   ((!wd->horizontal && wd->inverted) ||
 335                                    (wd->horizontal && !wd->inverted)))) pos = 1.0 - pos;
 336    edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", pos, pos);
 337 }
 338
 339 static void
 340 _units_set(Evas_Object *obj)
 341 {
 342    Widget_Data *wd = elm_widget_data_get(obj);
 343    if (!wd) return;
 344    if (wd->units_format_func)
 345      {
 346         const char *buf;
 347         buf = wd->units_format_func(wd->val);
 348         edje_object_part_text_set(wd->slider, "elm.units", buf);
 349         if (wd->units_format_free) wd->units_format_free(buf);
 350      }
 351    else if (wd->units)
 352      {
 353         char buf[1024];
 354
 355         snprintf(buf, sizeof(buf), wd->units, wd->val);
 356         edje_object_part_text_set(wd->slider, "elm.units", buf);
 357      }
 358    else
 359      edje_object_part_text_set(wd->slider, "elm.units", NULL);
 360 }
 361
 362 static void
 363 _indicator_set(Evas_Object *obj)
 364 {
 365    Widget_Data *wd = elm_widget_data_get(obj);
 366    if (!wd) return;
 367    if (wd->indicator_format_func)
 368      {
 369         const char *buf;
 370         buf = wd->indicator_format_func(wd->val);
 371         edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", buf);
 372         if (wd->indicator_format_free) wd->indicator_format_free(buf);
 373      }
 374    else if (wd->indicator)
 375      {
 376         char buf[1024];
 377         snprintf(buf, sizeof(buf), wd->indicator, wd->val);
 378         edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", buf);
 379      }
 380    else
 381      edje_object_part_text_set(wd->slider, "elm.dragable.slider:elm.indicator", NULL);
 382 }
 383
 384 static void
 385 _drag(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 386 {
 387    _val_fetch(data);
 388    _units_set(data);
 389    _indicator_set(data);
 390 }
 391
 392 static void
 393 _drag_start(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 394 {
 395    _val_fetch(data);
 396    evas_object_smart_callback_call(data, SIG_DRAG_START, NULL);
 397    _units_set(data);
 398    _indicator_set(data);
 399    elm_widget_scroll_freeze_push(data);
 400 }
 401
 402 static void
 403 _drag_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 404 {
 405    _val_fetch(data);
 406    evas_object_smart_callback_call(data, SIG_DRAG_STOP, NULL);
 407    _units_set(data);
 408    _indicator_set(data);
 409    elm_widget_scroll_freeze_pop(data);
 410 }
 411
 412 static void
 413 _drag_step(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 414 {
 415    _val_fetch(data);
 416    _units_set(data);
 417    _indicator_set(data);
 418 }
 419
 420 static void
 421 _drag_up(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 422 {
 423    double step;
 424    Widget_Data *wd;
 425
 426    wd = elm_widget_data_get(data);
 427    step = 0.05;
 428
 429    if (wd->inverted) step *= ELM_SLIDER_INVERTED_FACTOR;
 430
 431    edje_object_part_drag_step(wd->slider, "elm.dragable.slider", step, step);
 432 }
 433
 434 static void
 435 _drag_down(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 436 {
 437    double step;
 438    Widget_Data *wd;
 439
 440    wd = elm_widget_data_get(data);
 441    step = -0.05;
 442
 443    if (wd->inverted) step *= ELM_SLIDER_INVERTED_FACTOR;
 444
 445    edje_object_part_drag_step(wd->slider, "elm.dragable.slider", step, step);
 446 }
 447
 448 static void
 449 _spacer_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
 450 {
 451    Widget_Data *wd = elm_widget_data_get(data);
 452    Evas_Event_Mouse_Down *ev = event_info;
 453    Evas_Coord x, y, w, h;
 454    double button_x, button_y;
 455    double prev_button_x, prev_button_y;
 456
 457    evas_object_geometry_get(wd->spacer, &x, &y, &w, &h);
 458    edje_object_part_drag_value_get(wd->slider, "elm.dragable.slider", &prev_button_x, &prev_button_y);
 459    button_x = prev_button_x;
 460    button_y = prev_button_y;
 461    if (wd->horizontal)
 462      {
 463         button_x = ((double)ev->canvas.x - (double)x) / (double)w;
 464         if (button_x > 1) button_x = 1;
 465         if (button_x < 0) button_x = 0;
 466      }
 467    else
 468      {
 469         button_y = ((double)ev->canvas.y - (double)y) / (double)h;
 470         if (button_y > 1) button_y = 1;
 471         if (button_y < 0) button_y = 0;
 472      }
 473    if (button_x != prev_button_x || button_y != prev_button_y)
 474      {
 475         edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", button_x, button_y);
 476      }
 477
 478    //What is a purpose of these two mouse events?
 479    //I don't know the reason but these calls cause infinite loop.
 480    //So blocked them.
 481    //evas_event_feed_mouse_cancel(e, 0, NULL);
 482    //evas_event_feed_mouse_down(e, 1, EVAS_BUTTON_NONE, 0, NULL);
 483 }
 484
 485 static void
 486 _elm_slider_label_set(Evas_Object *obj, const char *part, const char *label)
 487 {
 488    ELM_CHECK_WIDTYPE(obj, widtype);
 489    Widget_Data *wd = elm_widget_data_get(obj);
 490    const char* default_part = "elm.text";
 491    const char* real_part;
 492
 493    if (!wd) return;
 494
 495    if (!part)
 496      real_part = default_part;
 497    else
 498      real_part = part;
 499
 500    if (wd->labels)
 501      {
 502        const char* old_label;
 503
 504        old_label = eina_hash_find(wd->labels, real_part);
 505        if (!old_label)
 506            eina_hash_add(wd->labels, real_part, eina_stringshare_add(label));
 507        else
 508          {
 509            eina_stringshare_ref(old_label);
 510            eina_hash_modify(wd->labels, real_part, eina_stringshare_add(label));
 511            eina_stringshare_del(old_label);
 512          }
 513      }
 514
 515    if (label)
 516      {
 517         edje_object_signal_emit(wd->slider, "elm,state,text,visible", "elm");
 518         edje_object_message_signal_process(wd->slider);
 519      }
 520    else
 521      {
 522         edje_object_signal_emit(wd->slider, "elm,state,text,hidden", "elm");
 523         edje_object_message_signal_process(wd->slider);
 524      }
 525
 526    edje_object_part_text_set(wd->slider, real_part, label);
 527    _sizing_eval(obj);
 528 }
 529
 530 static const char *
 531 _elm_slider_label_get(const Evas_Object *obj, const char *part)
 532 {
 533    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 534    Widget_Data *wd = elm_widget_data_get(obj);
 535    if (!wd) return NULL;
 536    if (!wd->labels) return NULL;
 537
 538    if (!part)
 539      return eina_hash_find(wd->labels, "elm.text");
 540    return eina_hash_find(wd->labels, part);
 541 }
 542
 543 static void
 544 _icon_set(Evas_Object *obj, Evas_Object *icon)
 545 {
 546    Widget_Data *wd = elm_widget_data_get(obj);
 547    if (!wd) return;
 548    if (wd->icon == icon) return;
 549    if (wd->icon) evas_object_del(wd->icon);
 550    wd->icon = icon;
 551    if (icon)
 552      {
 553         elm_widget_sub_object_add(obj, icon);
 554         evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 555                                        _changed_size_hints, obj);
 556         edje_object_part_swallow(wd->slider, "elm.swallow.icon", icon);
 557         edje_object_signal_emit(wd->slider, "elm,state,icon,visible", "elm");
 558         edje_object_message_signal_process(wd->slider);
 559      }
 560    _sizing_eval(obj);
 561 }
 562
 563 static Evas_Object *
 564 _icon_unset(Evas_Object *obj)
 565 {
 566    Widget_Data *wd = elm_widget_data_get(obj);
 567    Evas_Object *ret = NULL;
 568    if (!wd) return NULL;
 569    if (wd->icon)
 570      {
 571         elm_widget_sub_object_del(obj, wd->icon);
 572         evas_object_event_callback_del_full(wd->icon,
 573                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 574                                             _changed_size_hints, obj);
 575         ret = wd->icon;
 576         edje_object_part_unswallow(wd->slider, wd->icon);
 577         edje_object_signal_emit(wd->slider, "elm,state,icon,hidden", "elm");
 578         wd->icon = NULL;
 579         _sizing_eval(obj);
 580      }
 581    return ret;
 582 }
 583
 584 static void
 585 _end_set(Evas_Object *obj, Evas_Object *end)
 586 {
 587    Widget_Data *wd = elm_widget_data_get(obj);
 588    if (!wd) return;
 589    if (wd->end == end) return;
 590    if (wd->end) evas_object_del(wd->end);
 591    wd->end = end;
 592    if (end)
 593      {
 594         elm_widget_sub_object_add(obj, end);
 595         evas_object_event_callback_add(end, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 596                                        _changed_size_hints, obj);
 597         edje_object_part_swallow(wd->slider, "elm.swallow.end", end);
 598         edje_object_signal_emit(wd->slider, "elm,state,end,visible", "elm");
 599         edje_object_message_signal_process(wd->slider);
 600      }
 601    _sizing_eval(obj);
 602 }
 603
 604 static Evas_Object *
 605 _end_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->end)
 611      {
 612         elm_widget_sub_object_del(obj, wd->end);
 613         evas_object_event_callback_del_full(wd->end,
 614                                             EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 615                                             _changed_size_hints, obj);
 616         ret = wd->end;
 617         edje_object_part_unswallow(wd->slider, wd->end);
 618         edje_object_signal_emit(wd->slider, "elm,state,end,hidden", "elm");
 619         wd->end = NULL;
 620         _sizing_eval(obj);
 621      }
 622    return ret;
 623 }
 624
 625 static void
 626 _content_set_hook(Evas_Object *obj, const char *part, Evas_Object *content)
 627 {
 628    ELM_CHECK_WIDTYPE(obj, widtype);
 629    if (!part || !strcmp(part, "icon"))
 630      _icon_set(obj, content);
 631    else if (!strcmp(part, "end"))
 632      _end_set(obj, content);
 633 }
 634
 635 static Evas_Object *
 636 _content_get_hook(const Evas_Object *obj, const char *part)
 637 {
 638    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 639    Widget_Data *wd;
 640    wd = elm_widget_data_get(obj);
 641    if (!wd) return NULL;
 642    if (!part || !strcmp(part, "icon"))
 643      return wd->icon;
 644    else if (!strcmp(part, "end"))
 645      return wd->end;
 646    return NULL;
 647 }
 648
 649 static Evas_Object *
 650 _content_unset_hook(Evas_Object *obj, const char *part)
 651 {
 652    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 653    if (!part || !strcmp(part, "icon"))
 654      return _icon_unset(obj);
 655    else if (!strcmp(part, "end"))
 656      return _end_unset(obj);
 657    return NULL;
 658 }
 659
 660 static void
 661 _hash_labels_free_cb(void* label)
 662 {
 663   if (label)
 664     eina_stringshare_del(label);
 665 }
 666
 667 EAPI Evas_Object *
 668 elm_slider_add(Evas_Object *parent)
 669 {
 670    Evas_Object *obj;
 671    Evas *e;
 672    Widget_Data *wd;
 673
 674    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 675
 676    ELM_SET_WIDTYPE(widtype, "slider");
 677    elm_widget_type_set(obj, "slider");
 678    elm_widget_sub_object_add(parent, obj);
 679    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 680    elm_widget_data_set(obj, wd);
 681    elm_widget_del_hook_set(obj, _del_hook);
 682    elm_widget_theme_hook_set(obj, _theme_hook);
 683    elm_widget_disable_hook_set(obj, _disable_hook);
 684    elm_widget_can_focus_set(obj, EINA_TRUE);
 685    elm_widget_event_hook_set(obj, _event_hook);
 686    elm_widget_text_set_hook_set(obj, _elm_slider_label_set);
 687    elm_widget_text_get_hook_set(obj, _elm_slider_label_get);
 688    elm_widget_content_set_hook_set(obj, _content_set_hook);
 689    elm_widget_content_get_hook_set(obj, _content_get_hook);
 690    elm_widget_content_unset_hook_set(obj, _content_unset_hook);
 691
 692    wd->horizontal = EINA_TRUE;
 693    wd->indicator_show = EINA_TRUE;
 694    wd->val = 0.0;
 695    wd->val_min = 0.0;
 696    wd->val_max = 1.0;
 697    wd->labels = eina_hash_string_superfast_new(_hash_labels_free_cb);
 698
 699    wd->slider = edje_object_add(e);
 700    _elm_theme_object_set(obj, wd->slider, "slider", "horizontal", "default");
 701    elm_widget_resize_object_set(obj, wd->slider);
 702    edje_object_signal_callback_add(wd->slider, "drag", "*", _drag, obj);
 703    edje_object_signal_callback_add(wd->slider, "drag,start", "*", _drag_start, obj);
 704    edje_object_signal_callback_add(wd->slider, "drag,stop", "*", _drag_stop, obj);
 705    edje_object_signal_callback_add(wd->slider, "drag,step", "*", _drag_step, obj);
 706    edje_object_signal_callback_add(wd->slider, "drag,page", "*", _drag_stop, obj);
 707    //   edje_object_signal_callback_add(wd->slider, "drag,set", "*", _drag_stop, obj);
 708    edje_object_part_drag_value_set(wd->slider, "elm.dragable.slider", 0.0, 0.0);
 709
 710    wd->spacer = evas_object_rectangle_add(e);
 711    evas_object_color_set(wd->spacer, 0, 0, 0, 0);
 712    evas_object_pass_events_set(wd->spacer, EINA_TRUE);
 713    elm_widget_sub_object_add(obj, wd->spacer);
 714    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 715    evas_object_event_callback_add(wd->spacer, EVAS_CALLBACK_MOUSE_DOWN, _spacer_cb, obj);
 716    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 717
 718    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 719    _sizing_eval(obj);
 720
 721    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 722    // TODO: and save some bytes, making descriptions per-class and not instance!
 723    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 724    return obj;
 725 }
 726
 727 EAPI void
 728 elm_slider_label_set(Evas_Object *obj, const char *label)
 729 {
 730    _elm_slider_label_set(obj, NULL, label);
 731 }
 732
 733 EAPI const char *
 734 elm_slider_label_get(const Evas_Object *obj)
 735 {
 736    return _elm_slider_label_get(obj, NULL);
 737 }
 738
 739 EAPI void
 740 elm_slider_icon_set(Evas_Object *obj, Evas_Object *icon)
 741 {
 742    _content_set_hook(obj, "icon", icon);
 743 }
 744
 745 EAPI Evas_Object *
 746 elm_slider_icon_unset(Evas_Object *obj)
 747 {
 748    return _content_unset_hook(obj, "icon");
 749 }
 750
 751 EAPI Evas_Object *
 752 elm_slider_icon_get(const Evas_Object *obj)
 753 {
 754    return _content_get_hook(obj, "icon");
 755 }
 756
 757 EAPI void
 758 elm_slider_span_size_set(Evas_Object *obj, Evas_Coord size)
 759 {
 760    ELM_CHECK_WIDTYPE(obj, widtype);
 761    Widget_Data *wd = elm_widget_data_get(obj);
 762    if (!wd) return;
 763    if (wd->size == size) return;
 764    wd->size = size;
 765    if (wd->horizontal)
 766      evas_object_size_hint_min_set(wd->spacer, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale, 1);
 767    else
 768      evas_object_size_hint_min_set(wd->spacer, 1, (double)wd->size * elm_widget_scale_get(obj) * _elm_config->scale);
 769    if (wd->indicator_show)
 770      edje_object_signal_emit(wd->slider, "elm,state,val,show", "elm");
 771    else
 772      edje_object_signal_emit(wd->slider, "elm,state,val,hide", "elm");
 773    edje_object_part_swallow(wd->slider, "elm.swallow.bar", wd->spacer);
 774    _sizing_eval(obj);
 775 }
 776
 777 EAPI Evas_Coord
 778 elm_slider_span_size_get(const Evas_Object *obj)
 779 {
 780    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 781    Widget_Data *wd = elm_widget_data_get(obj);
 782    if (!wd) return 0;
 783    return wd->size;
 784 }
 785
 786 EAPI void
 787 elm_slider_unit_format_set(Evas_Object *obj, const char *units)
 788 {
 789    ELM_CHECK_WIDTYPE(obj, widtype);
 790    Widget_Data *wd = elm_widget_data_get(obj);
 791    if (!wd) return;
 792    eina_stringshare_replace(&wd->units, units);
 793    if (units)
 794      {
 795         edje_object_signal_emit(wd->slider, "elm,state,units,visible", "elm");
 796         edje_object_message_signal_process(wd->slider);
 797      }
 798    else
 799      {
 800         edje_object_signal_emit(wd->slider, "elm,state,units,hidden", "elm");
 801         edje_object_message_signal_process(wd->slider);
 802      }
 803    _units_set(obj);
 804    _sizing_eval(obj);
 805 }
 806
 807 EAPI const char *
 808 elm_slider_unit_format_get(const Evas_Object *obj)
 809 {
 810    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 811    Widget_Data *wd = elm_widget_data_get(obj);
 812    if (!wd) return NULL;
 813    return wd->units;
 814 }
 815
 816 EAPI void
 817 elm_slider_indicator_format_set(Evas_Object *obj, const char *indicator)
 818 {
 819    ELM_CHECK_WIDTYPE(obj, widtype);
 820    Widget_Data *wd = elm_widget_data_get(obj);
 821    if (!wd) return;
 822    eina_stringshare_replace(&wd->indicator, indicator);
 823    _indicator_set(obj);
 824 }
 825
 826 EAPI const char *
 827 elm_slider_indicator_format_get(const Evas_Object *obj)
 828 {
 829    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 830    Widget_Data *wd = elm_widget_data_get(obj);
 831    if (!wd) return NULL;
 832    return wd->indicator;
 833 }
 834
 835 EAPI void
 836 elm_slider_horizontal_set(Evas_Object *obj, Eina_Bool horizontal)
 837 {
 838    ELM_CHECK_WIDTYPE(obj, widtype);
 839    Widget_Data *wd = elm_widget_data_get(obj);
 840    if (!wd) return;
 841    horizontal = !!horizontal;
 842    if (wd->horizontal == horizontal) return;
 843    wd->horizontal = horizontal;
 844    _theme_hook(obj);
 845 }
 846
 847 EAPI Eina_Bool
 848 elm_slider_horizontal_get(const Evas_Object *obj)
 849 {
 850    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 851    Widget_Data *wd = elm_widget_data_get(obj);
 852    if (!wd) return EINA_FALSE;
 853    return wd->horizontal;
 854 }
 855
 856 EAPI void
 857 elm_slider_min_max_set(Evas_Object *obj, double min, double max)
 858 {
 859    ELM_CHECK_WIDTYPE(obj, widtype);
 860    Widget_Data *wd = elm_widget_data_get(obj);
 861    if (!wd) return;
 862    if ((wd->val_min == min) && (wd->val_max == max)) return;
 863    wd->val_min = min;
 864    wd->val_max = max;
 865    if (wd->val < wd->val_min) wd->val = wd->val_min;
 866    if (wd->val > wd->val_max) wd->val = wd->val_max;
 867    _val_set(obj);
 868    _units_set(obj);
 869    _indicator_set(obj);
 870 }
 871
 872 EAPI void
 873 elm_slider_min_max_get(const Evas_Object *obj, double *min, double *max)
 874 {
 875    if (min) *min = 0.0;
 876    if (max) *max = 0.0;
 877    ELM_CHECK_WIDTYPE(obj, widtype);
 878    Widget_Data *wd = elm_widget_data_get(obj);
 879    if (!wd) return;
 880    if (min) *min = wd->val_min;
 881    if (max) *max = wd->val_max;
 882 }
 883
 884 EAPI void
 885 elm_slider_value_set(Evas_Object *obj, double val)
 886 {
 887    ELM_CHECK_WIDTYPE(obj, widtype);
 888    Widget_Data *wd = elm_widget_data_get(obj);
 889    if (!wd) return;
 890    if (wd->val == val) return;
 891    wd->val = val;
 892    if (wd->val < wd->val_min) wd->val = wd->val_min;
 893    if (wd->val > wd->val_max) wd->val = wd->val_max;
 894    _val_set(obj);
 895    _units_set(obj);
 896    _indicator_set(obj);
 897 }
 898
 899 EAPI double
 900 elm_slider_value_get(const Evas_Object *obj)
 901 {
 902    ELM_CHECK_WIDTYPE(obj, widtype) 0.0;
 903    Widget_Data *wd = elm_widget_data_get(obj);
 904    if (!wd) return 0.0;
 905    return wd->val;
 906 }
 907
 908 EAPI void
 909 elm_slider_inverted_set(Evas_Object *obj, Eina_Bool inverted)
 910 {
 911    ELM_CHECK_WIDTYPE(obj, widtype);
 912    Widget_Data *wd = elm_widget_data_get(obj);
 913    if (!wd) return;
 914    inverted = !!inverted;
 915    if (wd->inverted == inverted) return;
 916    wd->inverted = inverted;
 917    if (wd->inverted)
 918      edje_object_signal_emit(wd->slider, "elm,state,inverted,on", "elm");
 919    else
 920      edje_object_signal_emit(wd->slider, "elm,state,inverted,off", "elm");
 921    edje_object_message_signal_process(wd->slider);
 922    _val_set(obj);
 923    _units_set(obj);
 924    _indicator_set(obj);
 925 }
 926
 927 EAPI Eina_Bool
 928 elm_slider_inverted_get(const Evas_Object *obj)
 929 {
 930    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 931    Widget_Data *wd = elm_widget_data_get(obj);
 932    if (!wd) return EINA_FALSE;
 933    return wd->inverted;
 934 }
 935
 936 EAPI void
 937 elm_slider_indicator_format_function_set(Evas_Object *obj, const char *(*func)(double val), void (*free_func)(const char *str))
 938 {
 939    ELM_CHECK_WIDTYPE(obj, widtype);
 940    Widget_Data *wd = elm_widget_data_get(obj);
 941    if (!wd) return;
 942    wd->indicator_format_func = func;
 943    wd->indicator_format_free = free_func;
 944    _indicator_set(obj);
 945 }
 946
 947 EAPI void
 948 elm_slider_units_format_function_set(Evas_Object *obj, const char *(*func)(double val), void (*free_func)(const char *str))
 949 {
 950    ELM_CHECK_WIDTYPE(obj, widtype);
 951    Widget_Data *wd = elm_widget_data_get(obj);
 952    if (!wd) return;
 953    wd->units_format_func = func;
 954    wd->units_format_free = free_func;
 955    _indicator_set(obj);
 956 }
 957
 958 EAPI void
 959 elm_slider_end_set(Evas_Object *obj, Evas_Object *end)
 960 {
 961    _content_set_hook(obj, "end", end);
 962 }
 963
 964 EAPI Evas_Object *
 965 elm_slider_end_unset(Evas_Object *obj)
 966 {
 967    return _content_unset_hook(obj, "end");
 968 }
 969
 970 EAPI Evas_Object *
 971 elm_slider_end_get(const Evas_Object *obj)
 972 {
 973    return _content_get_hook(obj, "end");
 974 }
 975
 976 EAPI void
 977 elm_slider_indicator_show_set(Evas_Object *obj, Eina_Bool show)
 978 {
 979    ELM_CHECK_WIDTYPE(obj, widtype);
 980    Widget_Data *wd = elm_widget_data_get(obj);
 981    if (show) {
 982         wd->indicator_show = EINA_TRUE;
 983         edje_object_signal_emit(wd->slider, "elm,state,val,show", "elm");
 984    }
 985    else {
 986         wd->indicator_show = EINA_FALSE;
 987         edje_object_signal_emit(wd->slider, "elm,state,val,hide", "elm");
 988    }
 989 }
 990
 991 EAPI Eina_Bool
 992 elm_slider_indicator_show_get(const Evas_Object *obj)
 993 {
 994    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 995    Widget_Data *wd = elm_widget_data_get(obj);
 996    if (!wd) return EINA_FALSE;
 997    return wd->indicator_show;
 998 }
 999