src/lib/elm_check.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 *chk, *icon;
   9    Eina_Bool state;
  10    Eina_Bool *statep;
  11    const char *label;
  12    const char *ontext, *offtext;
  13 };
  14
  15 static const char *widtype = NULL;
  16 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  17                              Evas_Callback_Type type, void *event_info);
  18 static void _del_hook(Evas_Object *obj);
  19 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  20 static void _theme_hook(Evas_Object *obj);
  21 static void _disable_hook(Evas_Object *obj);
  22 static void _sizing_eval(Evas_Object *obj);
  23 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj,
  24                                 void *event_info);
  25 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
  26 static void _signal_check_off(void *data, Evas_Object *obj,
  27                               const char *emission, const char *source);
  28 static void _signal_check_on(void *data, Evas_Object *obj,
  29                              const char *emission, const char *source);
  30 static void _signal_check_toggle(void *data, Evas_Object *obj,
  31                                  const char *emission, const char *source);
  32 static void _on_focus_hook(void *data, Evas_Object *obj);
  33 static void _activate_hook(Evas_Object *obj);
  34 static void _content_set_hook(Evas_Object *obj, const char *part,
  35                               Evas_Object *content);
  36 static Evas_Object *_content_get_hook(const Evas_Object *obj, const char *part);
  37 static Evas_Object *_content_unset_hook(Evas_Object *obj, const char *part);
  38 static void _activate(Evas_Object *obj);
  39 static const char SIG_CHANGED[] = "changed";
  40 static const Evas_Smart_Cb_Description _signals[] = {
  41        {SIG_CHANGED, ""},
  42        {NULL, NULL}
  43 };
  44
  45 static Eina_Bool
  46 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__,
  47             Evas_Callback_Type type, void *event_info)
  48 {
  49    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
  50    Evas_Event_Key_Down *ev = event_info;
  51    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  52    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  53    if ((strcmp(ev->keyname, "Return")) &&
  54        (strcmp(ev->keyname, "KP_Enter")) &&
  55        (strcmp(ev->keyname, "space")))
  56      return EINA_FALSE;
  57    _activate(obj);
  58    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  59    return EINA_TRUE;
  60 }
  61
  62 static void
  63 _del_hook(Evas_Object *obj)
  64 {
  65    Widget_Data *wd = elm_widget_data_get(obj);
  66    if (!wd) return;
  67    if (wd->label) eina_stringshare_del(wd->label);
  68    if (wd->ontext) eina_stringshare_del(wd->ontext);
  69    if (wd->offtext) eina_stringshare_del(wd->offtext);
  70    free(wd);
  71 }
  72
  73 static void
  74 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
  75 {
  76    Widget_Data *wd = elm_widget_data_get(obj);
  77    if (!wd) return;
  78    if (elm_widget_focus_get(obj))
  79      {
  80         edje_object_signal_emit(wd->chk, "elm,action,focus", "elm");
  81         evas_object_focus_set(wd->chk, EINA_TRUE);
  82      }
  83    else
  84      {
  85         edje_object_signal_emit(wd->chk, "elm,action,unfocus", "elm");
  86         evas_object_focus_set(wd->chk, EINA_FALSE);
  87      }
  88 }
  89
  90 static void
  91 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
  92 {
  93    Widget_Data *wd = elm_widget_data_get(obj);
  94    if (!wd) return;
  95    edje_object_mirrored_set(wd->chk, rtl);
  96 }
  97
  98 static void
  99 _theme_hook(Evas_Object *obj)
 100 {
 101    Widget_Data *wd = elm_widget_data_get(obj);
 102    if (!wd) return;
 103    _elm_widget_mirrored_reload(obj);
 104    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 105    _elm_theme_object_set(obj, wd->chk, "check", "base", elm_widget_style_get(obj));
 106    if (wd->icon)
 107      edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 108    else
 109      edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 110    if (wd->state)
 111      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 112    else
 113      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 114    if (wd->label)
 115      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 116    else
 117      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 118    edje_object_part_text_set(wd->chk, "elm.text", wd->label);
 119    edje_object_part_text_set(wd->chk, "elm.ontext", wd->ontext);
 120    edje_object_part_text_set(wd->chk, "elm.offtext", wd->offtext);
 121    if (elm_widget_disabled_get(obj))
 122      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 123    edje_object_message_signal_process(wd->chk);
 124    edje_object_scale_set(wd->chk, elm_widget_scale_get(obj) * _elm_config->scale);
 125    _sizing_eval(obj);
 126 }
 127
 128 static void
 129 _disable_hook(Evas_Object *obj)
 130 {
 131    Widget_Data *wd = elm_widget_data_get(obj);
 132    if (!wd) return;
 133    if (elm_widget_disabled_get(obj))
 134      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 135    else
 136      edje_object_signal_emit(wd->chk, "elm,state,enabled", "elm");
 137 }
 138
 139 static void
 140 _sizing_eval(Evas_Object *obj)
 141 {
 142    Widget_Data *wd = elm_widget_data_get(obj);
 143    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 144    if (!wd) return;
 145    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 146    edje_object_size_min_restricted_calc(wd->chk, &minw, &minh, minw, minh);
 147    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 148    evas_object_size_hint_min_set(obj, minw, minh);
 149    evas_object_size_hint_max_set(obj, maxw, maxh);
 150 }
 151
 152 static void
 153 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 154 {
 155    Widget_Data *wd = elm_widget_data_get(data);
 156    if (!wd) return;
 157    if (obj != wd->icon) return;
 158    _sizing_eval(data);
 159 }
 160
 161 static void
 162 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 163 {
 164    Widget_Data *wd = elm_widget_data_get(obj);
 165    Evas_Object *sub = event_info;
 166    if (!wd) return;
 167    if (sub == wd->icon)
 168      {
 169         edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 170         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 171                                             _changed_size_hints, obj);
 172         wd->icon = NULL;
 173         _sizing_eval(obj);
 174         edje_object_message_signal_process(wd->chk);
 175      }
 176 }
 177
 178 static void
 179 _signal_check_off(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 180 {
 181    Widget_Data *wd = elm_widget_data_get(data);
 182    if (!wd) return;
 183    wd->state = EINA_FALSE;
 184    if (wd->statep) *wd->statep = wd->state;
 185    edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 186    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 187 }
 188
 189 static void
 190 _signal_check_on(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 191 {
 192    Widget_Data *wd = elm_widget_data_get(data);
 193    if (!wd) return;
 194    wd->state = EINA_TRUE;
 195    if (wd->statep) *wd->statep = wd->state;
 196    edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 197    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 198 }
 199
 200 static void
 201 _signal_check_toggle(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 202 {
 203    _activate(data);
 204 }
 205
 206 static void
 207 _activate_hook(Evas_Object *obj)
 208 {
 209    _activate(obj);
 210 }
 211
 212 static void
 213 _content_set_hook(Evas_Object *obj, const char *part, Evas_Object *content)
 214 {
 215    ELM_CHECK_WIDTYPE(obj, widtype);
 216    Widget_Data *wd;
 217
 218    if (part && strcmp(part, "icon")) return;
 219    wd = elm_widget_data_get(obj);
 220    if (!wd) return;
 221    if (wd->icon == content) return;
 222    if (wd->icon) evas_object_del(wd->icon);
 223    wd->icon = content;
 224    if (content)
 225      {
 226         elm_widget_sub_object_add(obj, content);
 227         evas_object_event_callback_add(content,
 228                                        EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 229                                        _changed_size_hints, obj);
 230         edje_object_part_swallow(wd->chk, "elm.swallow.content", content);
 231         edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 232         edje_object_message_signal_process(wd->chk);
 233      }
 234    _sizing_eval(obj);
 235 }
 236
 237 static Evas_Object *
 238 _content_get_hook(const Evas_Object *obj, const char *part)
 239 {
 240    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 241    Widget_Data *wd;
 242
 243    if (part && strcmp(part, "icon")) return NULL;
 244    wd = elm_widget_data_get(obj);
 245    if (!wd) return NULL;
 246    return wd->icon;
 247 }
 248
 249 static Evas_Object *
 250 _content_unset_hook(Evas_Object *obj, const char *part)
 251 {
 252    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 253    Widget_Data *wd;
 254
 255    if (part && strcmp(part, "icon")) return NULL;
 256    wd = elm_widget_data_get(obj);
 257    if (!wd) return NULL;
 258    if (!wd->icon) return NULL;
 259    Evas_Object *icon = wd->icon;
 260    elm_widget_sub_object_del(obj, wd->icon);
 261    evas_object_event_callback_del_full(wd->icon,
 262                                        EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 263                                        _changed_size_hints, obj);
 264    edje_object_part_unswallow(wd->chk, wd->icon);
 265    wd->icon = NULL;
 266    return icon;
 267 }
 268
 269 static void
 270 _activate(Evas_Object *obj)
 271 {
 272    Widget_Data *wd = elm_widget_data_get(obj);
 273    if (!wd) return;
 274    if ((_elm_config->access_mode == ELM_ACCESS_MODE_OFF) ||
 275        (_elm_access_2nd_click_timeout(obj)))
 276      {
 277         wd->state = !wd->state;
 278         if (wd->statep) *wd->statep = wd->state;
 279         if (wd->state)
 280           {
 281              edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 282              if (_elm_config->access_mode != ELM_ACCESS_MODE_OFF)
 283                {
 284                   if (!wd->ontext)
 285                     {
 286                        _elm_access_say(E_("State: On"));
 287                     }
 288                   else
 289                      _elm_access_say(E_("State: On"));
 290                }
 291           }
 292         else
 293           {
 294              edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 295              if (_elm_config->access_mode != ELM_ACCESS_MODE_OFF)
 296                {
 297                   if (!wd->offtext)
 298                     {
 299                        _elm_access_say(E_("State: Off"));
 300                     }
 301                   else
 302                      _elm_access_say(E_("State: Off"));
 303                }
 304           }
 305         evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 306      }
 307 }
 308
 309 static void
 310 _elm_check_label_set(Evas_Object *obj, const char *item, const char *label)
 311 {
 312    ELM_CHECK_WIDTYPE(obj, widtype);
 313    Widget_Data *wd = elm_widget_data_get(obj);
 314    if (!wd) return;
 315    if ((!item) || (!strcmp(item, "default")))
 316      {
 317         eina_stringshare_replace(&wd->label, label);
 318         if (label)
 319            edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 320         else
 321            edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 322         edje_object_message_signal_process(wd->chk);
 323         edje_object_part_text_set(wd->chk, "elm.text", label);
 324      }
 325    else if ((item) && (!strcmp(item, "on")))
 326      {
 327         eina_stringshare_replace(&wd->ontext, label);
 328         edje_object_part_text_set(wd->chk, "elm.ontext", wd->ontext);
 329      }
 330    else if ((item) && (!strcmp(item, "off")))
 331      {
 332         eina_stringshare_replace(&wd->offtext, label);
 333         edje_object_part_text_set(wd->chk, "elm.offtext", wd->offtext);
 334      }
 335    _sizing_eval(obj);
 336 }
 337
 338 static const char *
 339 _elm_check_label_get(const Evas_Object *obj, const char *item)
 340 {
 341    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 342    Widget_Data *wd = elm_widget_data_get(obj);
 343    if (!wd) return NULL;
 344    if ((!item) || (!strcmp(item, "default")))
 345       return wd->label;
 346    else if ((item) && (!strcmp(item, "on")))
 347       return wd->ontext;
 348    else if ((item) && (!strcmp(item, "off")))
 349       return wd->offtext;
 350    return NULL;
 351 }
 352
 353 static char *
 354 _access_info_cb(void *data __UNUSED__, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 355 {
 356    const char *txt = elm_widget_access_info_get(obj);
 357    if (!txt) txt = _elm_check_label_get(obj, NULL);
 358    if (txt) return strdup(txt);
 359    return NULL;
 360 }
 361
 362 static char *
 363 _access_state_cb(void *data, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 364 {
 365    Evas_Object *o = data;
 366    Widget_Data *wd = elm_widget_data_get(o);
 367    if (!wd) return NULL;
 368    if (elm_widget_disabled_get(obj))
 369      return strdup(E_("State: Disabled"));
 370    if (wd->state)
 371      {
 372         if (wd->ontext)
 373           {
 374              char buf[1024];
 375
 376              snprintf(buf, sizeof(buf), "%s: %s", E_("State"), wd->ontext);
 377              return strdup(buf);
 378           }
 379         else
 380            return strdup(E_("State: On"));
 381      }
 382    if (wd->offtext)
 383      {
 384         char buf[1024];
 385
 386         snprintf(buf, sizeof(buf), "%s: %s", E_("State"), wd->offtext);
 387         return strdup(buf);
 388      }
 389    return strdup(E_("State: Off"));
 390 }
 391
 392 EAPI Evas_Object *
 393 elm_check_add(Evas_Object *parent)
 394 {
 395    Evas_Object *obj;
 396    Evas *e;
 397    Widget_Data *wd;
 398
 399    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 400
 401    ELM_SET_WIDTYPE(widtype, "check");
 402    elm_widget_type_set(obj, "check");
 403    elm_widget_sub_object_add(parent, obj);
 404    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 405    elm_widget_data_set(obj, wd);
 406    elm_widget_del_hook_set(obj, _del_hook);
 407    elm_widget_theme_hook_set(obj, _theme_hook);
 408    elm_widget_disable_hook_set(obj, _disable_hook);
 409    elm_widget_can_focus_set(obj, EINA_TRUE);
 410    elm_widget_activate_hook_set(obj, _activate_hook);
 411    elm_widget_event_hook_set(obj, _event_hook);
 412    elm_widget_text_set_hook_set(obj, _elm_check_label_set);
 413    elm_widget_text_get_hook_set(obj, _elm_check_label_get);
 414    elm_widget_content_set_hook_set(obj, _content_set_hook);
 415    elm_widget_content_get_hook_set(obj, _content_get_hook);
 416    elm_widget_content_unset_hook_set(obj, _content_unset_hook);
 417
 418    wd->chk = edje_object_add(e);
 419    _elm_theme_object_set(obj, wd->chk, "check", "base", "default");
 420    edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
 421                                    _signal_check_on, obj);
 422    edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
 423                                    _signal_check_off, obj);
 424    edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
 425                                    _signal_check_toggle, obj);
 426    elm_widget_resize_object_set(obj, wd->chk);
 427
 428    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 429
 430    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 431    _sizing_eval(obj);
 432
 433    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 434    // TODO: and save some bytes, making descriptions per-class and not instance!
 435    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 436
 437    _elm_access_object_register(obj, wd->chk);
 438    _elm_access_text_set(_elm_access_object_get(obj),
 439                         ELM_ACCESS_TYPE, E_("Check"));
 440    _elm_access_callback_set(_elm_access_object_get(obj),
 441                             ELM_ACCESS_INFO, _access_info_cb, obj);
 442    _elm_access_callback_set(_elm_access_object_get(obj),
 443                             ELM_ACCESS_STATE, _access_state_cb, obj);
 444    return obj;
 445 }
 446
 447 EAPI void
 448 elm_check_state_set(Evas_Object *obj, Eina_Bool state)
 449 {
 450    ELM_CHECK_WIDTYPE(obj, widtype);
 451    Widget_Data *wd = elm_widget_data_get(obj);
 452    if (!wd) return;
 453    if (state != wd->state)
 454      {
 455         wd->state = state;
 456         if (wd->statep) *wd->statep = wd->state;
 457         if (wd->state)
 458           edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 459         else
 460           edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 461      }
 462    edje_object_message_signal_process(wd->chk);
 463 }
 464
 465 EAPI Eina_Bool
 466 elm_check_state_get(const Evas_Object *obj)
 467 {
 468    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 469    Widget_Data *wd = elm_widget_data_get(obj);
 470    if (!wd) return EINA_FALSE;
 471    return wd->state;
 472 }
 473
 474 EAPI void
 475 elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
 476 {
 477    ELM_CHECK_WIDTYPE(obj, widtype);
 478    Widget_Data *wd = elm_widget_data_get(obj);
 479    if (!wd) return;
 480    if (statep)
 481      {
 482         wd->statep = statep;
 483         if (*wd->statep != wd->state)
 484           {
 485              wd->state = *wd->statep;
 486              if (wd->state)
 487                edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 488              else
 489                edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 490           }
 491      }
 492    else
 493      wd->statep = NULL;
 494 }