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 void _del_hook(Evas_Object *obj);
  17 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  18 static void _theme_hook(Evas_Object *obj);
  19 static void _disable_hook(Evas_Object *obj);
  20 static void _sizing_eval(Evas_Object *obj);
  21 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
  22 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
  23 static void _signal_check_off(void *data, Evas_Object *obj, const char *emission, const char *source);
  24 static void _signal_check_on(void *data, Evas_Object *obj, const char *emission, const char *source);
  25 static void _signal_check_toggle(void *data, Evas_Object *obj, const char *emission, const char *source);
  26 static void _on_focus_hook(void *data, Evas_Object *obj);
  27 static void _activate_hook(Evas_Object *obj);
  28 static void _activate(Evas_Object *obj);
  29 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  30                              Evas_Callback_Type type, void *event_info);
  31
  32 static const char SIG_CHANGED[] = "changed";
  33 static const Evas_Smart_Cb_Description _signals[] = {
  34        {SIG_CHANGED, ""},
  35        {NULL, NULL}
  36 };
  37
  38 static Eina_Bool
  39 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  40 {
  41    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
  42    Evas_Event_Key_Down *ev = event_info;
  43    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  44    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  45    if ((strcmp(ev->keyname, "Return")) &&
  46        (strcmp(ev->keyname, "KP_Enter")) &&
  47        (strcmp(ev->keyname, "space")))
  48      return EINA_FALSE;
  49    _activate(obj);
  50    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  51    return EINA_TRUE;
  52 }
  53
  54
  55 static void
  56 _del_hook(Evas_Object *obj)
  57 {
  58    Widget_Data *wd = elm_widget_data_get(obj);
  59    if (!wd) return;
  60    if (wd->label) eina_stringshare_del(wd->label);
  61    if (wd->ontext) eina_stringshare_del(wd->ontext);
  62    if (wd->offtext) eina_stringshare_del(wd->offtext);
  63    free(wd);
  64 }
  65
  66 static void
  67 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
  68 {
  69    Widget_Data *wd = elm_widget_data_get(obj);
  70    if (!wd) return;
  71    if (elm_widget_focus_get(obj))
  72      {
  73         edje_object_signal_emit(wd->chk, "elm,action,focus", "elm");
  74         evas_object_focus_set(wd->chk, EINA_TRUE);
  75      }
  76    else
  77      {
  78         edje_object_signal_emit(wd->chk, "elm,action,unfocus", "elm");
  79         evas_object_focus_set(wd->chk, EINA_FALSE);
  80      }
  81 }
  82
  83 static void
  84 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
  85 {
  86    Widget_Data *wd = elm_widget_data_get(obj);
  87    if (!wd) return;
  88    edje_object_mirrored_set(wd->chk, rtl);
  89 }
  90
  91 static void
  92 _theme_hook(Evas_Object *obj)
  93 {
  94    Widget_Data *wd = elm_widget_data_get(obj);
  95    if (!wd) return;
  96    _elm_widget_mirrored_reload(obj);
  97    _mirrored_set(obj, elm_widget_mirrored_get(obj));
  98    _elm_theme_object_set(obj, wd->chk, "check", "base", elm_widget_style_get(obj));
  99    if (wd->icon)
 100      edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 101    else
 102      edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 103    if (wd->state)
 104      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 105    else
 106      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 107    if (wd->label)
 108      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 109    else
 110      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 111    edje_object_part_text_set(wd->chk, "elm.text", wd->label);
 112    edje_object_part_text_set(wd->chk, "elm.ontext", wd->ontext);
 113    edje_object_part_text_set(wd->chk, "elm.offtext", wd->offtext);
 114    if (elm_widget_disabled_get(obj))
 115      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 116    edje_object_message_signal_process(wd->chk);
 117    edje_object_scale_set(wd->chk, elm_widget_scale_get(obj) * _elm_config->scale);
 118    _sizing_eval(obj);
 119 }
 120
 121 static void
 122 _disable_hook(Evas_Object *obj)
 123 {
 124    Widget_Data *wd = elm_widget_data_get(obj);
 125    if (!wd) return;
 126    if (elm_widget_disabled_get(obj))
 127      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 128    else
 129      edje_object_signal_emit(wd->chk, "elm,state,enabled", "elm");
 130 }
 131
 132 static void
 133 _sizing_eval(Evas_Object *obj)
 134 {
 135    Widget_Data *wd = elm_widget_data_get(obj);
 136    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 137    if (!wd) return;
 138    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 139    edje_object_size_min_restricted_calc(wd->chk, &minw, &minh, minw, minh);
 140    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 141    evas_object_size_hint_min_set(obj, minw, minh);
 142    evas_object_size_hint_max_set(obj, maxw, maxh);
 143 }
 144
 145 static void
 146 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 147 {
 148    Widget_Data *wd = elm_widget_data_get(data);
 149    if (!wd) return;
 150    if (obj != wd->icon) return;
 151    _sizing_eval(data);
 152 }
 153
 154 static void
 155 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 156 {
 157    Widget_Data *wd = elm_widget_data_get(obj);
 158    Evas_Object *sub = event_info;
 159    if (!wd) return;
 160    if (sub == wd->icon)
 161      {
 162         edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 163         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 164                                             _changed_size_hints, obj);
 165         wd->icon = NULL;
 166         _sizing_eval(obj);
 167         edje_object_message_signal_process(wd->chk);
 168      }
 169 }
 170
 171 static void
 172 _signal_check_off(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 173 {
 174    Widget_Data *wd = elm_widget_data_get(data);
 175    if (!wd) return;
 176    wd->state = EINA_FALSE;
 177    if (wd->statep) *wd->statep = wd->state;
 178    edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 179    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 180 }
 181
 182 static void
 183 _signal_check_on(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 184 {
 185    Widget_Data *wd = elm_widget_data_get(data);
 186    if (!wd) return;
 187    wd->state = EINA_TRUE;
 188    if (wd->statep) *wd->statep = wd->state;
 189    edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 190    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 191 }
 192
 193 static void
 194 _signal_check_toggle(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 195 {
 196    _activate(data);
 197 }
 198
 199 static void
 200 _activate_hook(Evas_Object *obj)
 201 {
 202    _activate(obj);
 203 }
 204
 205 static void
 206 _activate(Evas_Object *obj)
 207 {
 208    Widget_Data *wd = elm_widget_data_get(obj);
 209    if (!wd) return;
 210    if ((_elm_config->access_mode == ELM_ACCESS_MODE_OFF) ||
 211        (_elm_access_2nd_click_timeout(obj)))
 212      {
 213         wd->state = !wd->state;
 214         if (wd->statep) *wd->statep = wd->state;
 215         if (wd->state)
 216           {
 217              edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 218              if (_elm_config->access_mode != ELM_ACCESS_MODE_OFF)
 219                {
 220                   if (!wd->ontext)
 221                     {
 222                        _elm_access_say(E_("State: On"));
 223                     }
 224                   else
 225                      _elm_access_say(E_("State: On"));
 226                }
 227           }
 228         else
 229           {
 230              edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 231              if (_elm_config->access_mode != ELM_ACCESS_MODE_OFF)
 232                {
 233                   if (!wd->offtext)
 234                     {
 235                        _elm_access_say(E_("State: Off"));
 236                     }
 237                   else
 238                      _elm_access_say(E_("State: Off"));
 239                }
 240           }
 241         evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 242      }
 243 }
 244
 245 static void
 246 _elm_check_label_set(Evas_Object *obj, const char *item, const char *label)
 247 {
 248    ELM_CHECK_WIDTYPE(obj, widtype);
 249    Widget_Data *wd = elm_widget_data_get(obj);
 250    if (!wd) return;
 251    if ((!item) || (!strcmp(item, "default")))
 252      {
 253         eina_stringshare_replace(&wd->label, label);
 254         if (label)
 255            edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 256         else
 257            edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 258         edje_object_message_signal_process(wd->chk);
 259         edje_object_part_text_set(wd->chk, "elm.text", label);
 260      }
 261    else if ((item) && (!strcmp(item, "on")))
 262      {
 263         eina_stringshare_replace(&wd->ontext, label);
 264         edje_object_part_text_set(wd->chk, "elm.ontext", wd->ontext);
 265      }
 266    else if ((item) && (!strcmp(item, "off")))
 267      {
 268         eina_stringshare_replace(&wd->offtext, label);
 269         edje_object_part_text_set(wd->chk, "elm.offtext", wd->offtext);
 270      }
 271    _sizing_eval(obj);
 272 }
 273
 274 static const char *
 275 _elm_check_label_get(const Evas_Object *obj, const char *item)
 276 {
 277    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 278    Widget_Data *wd = elm_widget_data_get(obj);
 279    if (!wd) return NULL;
 280    if ((!item) || (!strcmp(item, "default")))
 281       return wd->label;
 282    else if ((item) && (!strcmp(item, "on")))
 283       return wd->ontext;
 284    else if ((item) && (!strcmp(item, "off")))
 285       return wd->offtext;
 286    return NULL;
 287 }
 288
 289 static char *
 290 _access_info_cb(void *data __UNUSED__, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 291 {
 292    const char *txt = elm_widget_access_info_get(obj);
 293    if (!txt) txt = _elm_check_label_get(obj, NULL);
 294    if (txt) return strdup(txt);
 295    return NULL;
 296 }
 297
 298 static char *
 299 _access_state_cb(void *data, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 300 {
 301    Evas_Object *o = data;
 302    Widget_Data *wd = elm_widget_data_get(o);
 303    if (!wd) return NULL;
 304    if (elm_widget_disabled_get(obj))
 305      return strdup(E_("State: Disabled"));
 306    if (wd->state)
 307      {
 308         if (wd->ontext)
 309           {
 310              char buf[1024];
 311
 312              snprintf(buf, sizeof(buf), "%s: %s", E_("State"), wd->ontext);
 313              return strdup(buf);
 314           }
 315         else
 316            return strdup(E_("State: On"));
 317      }
 318    if (wd->offtext)
 319      {
 320         char buf[1024];
 321
 322         snprintf(buf, sizeof(buf), "%s: %s", E_("State"), wd->offtext);
 323         return strdup(buf);
 324      }
 325    return strdup(E_("State: Off"));
 326 }
 327
 328 EAPI Evas_Object *
 329 elm_check_add(Evas_Object *parent)
 330 {
 331    Evas_Object *obj;
 332    Evas *e;
 333    Widget_Data *wd;
 334
 335    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 336
 337    ELM_SET_WIDTYPE(widtype, "check");
 338    elm_widget_type_set(obj, "check");
 339    elm_widget_sub_object_add(parent, obj);
 340    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 341    elm_widget_data_set(obj, wd);
 342    elm_widget_del_hook_set(obj, _del_hook);
 343    elm_widget_theme_hook_set(obj, _theme_hook);
 344    elm_widget_disable_hook_set(obj, _disable_hook);
 345    elm_widget_can_focus_set(obj, EINA_TRUE);
 346    elm_widget_activate_hook_set(obj, _activate_hook);
 347    elm_widget_event_hook_set(obj, _event_hook);
 348    elm_widget_text_set_hook_set(obj, _elm_check_label_set);
 349    elm_widget_text_get_hook_set(obj, _elm_check_label_get);
 350
 351    wd->chk = edje_object_add(e);
 352    _elm_theme_object_set(obj, wd->chk, "check", "base", "default");
 353    edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
 354                                    _signal_check_on, obj);
 355    edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
 356                                    _signal_check_off, obj);
 357    edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
 358                                    _signal_check_toggle, obj);
 359    elm_widget_resize_object_set(obj, wd->chk);
 360
 361    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 362
 363    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 364    _sizing_eval(obj);
 365
 366    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 367    // TODO: and save some bytes, making descriptions per-class and not instance!
 368    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 369
 370    _elm_access_object_register(obj, wd->chk);
 371    _elm_access_text_set(_elm_access_object_get(obj),
 372                         ELM_ACCESS_TYPE, E_("Check"));
 373    _elm_access_callback_set(_elm_access_object_get(obj),
 374                             ELM_ACCESS_INFO, _access_info_cb, obj);
 375    _elm_access_callback_set(_elm_access_object_get(obj),
 376                             ELM_ACCESS_STATE, _access_state_cb, obj);
 377    return obj;
 378 }
 379
 380 EAPI void
 381 elm_check_label_set(Evas_Object *obj, const char *label)
 382 {
 383    _elm_check_label_set(obj, NULL, label);
 384 }
 385
 386 EAPI const char *
 387 elm_check_label_get(const Evas_Object *obj)
 388 {
 389    return _elm_check_label_get(obj, NULL);
 390 }
 391
 392 EAPI void
 393 elm_check_states_labels_set(Evas_Object *obj, const char *ontext, const char *offtext)
 394 {
 395    _elm_check_label_set(obj, "on", ontext);
 396    _elm_check_label_set(obj, "off", offtext);
 397 }
 398
 399 EAPI void
 400 elm_check_states_labels_get(const Evas_Object *obj, const char **ontext, const char **offtext)
 401 {
 402    if (ontext) *ontext = _elm_check_label_get(obj, "on");
 403    if (offtext) *offtext = _elm_check_label_get(obj, "off");
 404 }
 405
 406 EAPI void
 407 elm_check_icon_set(Evas_Object *obj, Evas_Object *icon)
 408 {
 409    ELM_CHECK_WIDTYPE(obj, widtype);
 410    Widget_Data *wd = elm_widget_data_get(obj);
 411    if (!wd) return;
 412    if (wd->icon == icon) return;
 413    if (wd->icon) evas_object_del(wd->icon);
 414    wd->icon = icon;
 415    if (icon)
 416      {
 417         elm_widget_sub_object_add(obj, icon);
 418         evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 419                                        _changed_size_hints, obj);
 420         edje_object_part_swallow(wd->chk, "elm.swallow.content", icon);
 421         edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 422         edje_object_message_signal_process(wd->chk);
 423      }
 424    _sizing_eval(obj);
 425 }
 426
 427 EAPI Evas_Object *
 428 elm_check_icon_get(const Evas_Object *obj)
 429 {
 430    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 431    Widget_Data *wd = elm_widget_data_get(obj);
 432    if (!wd) return NULL;
 433    return wd->icon;
 434 }
 435
 436 EAPI Evas_Object *
 437 elm_check_icon_unset(Evas_Object *obj)
 438 {
 439    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 440    Widget_Data *wd = elm_widget_data_get(obj);
 441    if (!wd) return NULL;
 442    if (!wd->icon) return NULL;
 443    Evas_Object *icon = wd->icon;
 444    elm_widget_sub_object_del(obj, wd->icon);
 445    edje_object_part_unswallow(wd->chk, wd->icon);
 446    wd->icon = NULL;
 447    return icon;
 448 }
 449
 450 EAPI void
 451 elm_check_state_set(Evas_Object *obj, Eina_Bool state)
 452 {
 453    ELM_CHECK_WIDTYPE(obj, widtype);
 454    Widget_Data *wd = elm_widget_data_get(obj);
 455    if (!wd) return;
 456    if (state != wd->state)
 457      {
 458         wd->state = state;
 459         if (wd->statep) *wd->statep = wd->state;
 460         if (wd->state)
 461           edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 462         else
 463           edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 464      }
 465    edje_object_message_signal_process(wd->chk);
 466 }
 467
 468 EAPI Eina_Bool
 469 elm_check_state_get(const Evas_Object *obj)
 470 {
 471    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 472    Widget_Data *wd = elm_widget_data_get(obj);
 473    if (!wd) return EINA_FALSE;
 474    return wd->state;
 475 }
 476
 477 EAPI void
 478 elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
 479 {
 480    ELM_CHECK_WIDTYPE(obj, widtype);
 481    Widget_Data *wd = elm_widget_data_get(obj);
 482    if (!wd) return;
 483    if (statep)
 484      {
 485         wd->statep = statep;
 486         if (*wd->statep != wd->state)
 487           {
 488              wd->state = *wd->statep;
 489              if (wd->state)
 490                edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 491              else
 492                edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 493           }
 494      }
 495    else
 496      wd->statep = NULL;
 497 }