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 _content_set_hook(Evas_Object *obj, const char *part, Evas_Object *content);
  29 static Evas_Object *_content_get_hook(const Evas_Object *obj, const char *part);
  30 static Evas_Object *_content_unset_hook(Evas_Object *obj, const char *part);
  31
  32 static void _activate(Evas_Object *obj);
  33 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  34                              Evas_Callback_Type type, void *event_info);
  35
  36 static const char SIG_CHANGED[] = "changed";
  37 static const Evas_Smart_Cb_Description _signals[] = {
  38        {SIG_CHANGED, ""},
  39        {NULL, NULL}
  40 };
  41
  42 static Eina_Bool
  43 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  44 {
  45    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
  46    Evas_Event_Key_Down *ev = event_info;
  47    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  48    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  49    if ((strcmp(ev->keyname, "Return")) &&
  50        (strcmp(ev->keyname, "KP_Enter")) &&
  51        (strcmp(ev->keyname, "space")))
  52      return EINA_FALSE;
  53    _activate(obj);
  54    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  55    return EINA_TRUE;
  56 }
  57
  58
  59 static void
  60 _del_hook(Evas_Object *obj)
  61 {
  62    Widget_Data *wd = elm_widget_data_get(obj);
  63    if (!wd) return;
  64    if (wd->label) eina_stringshare_del(wd->label);
  65    if (wd->ontext) eina_stringshare_del(wd->ontext);
  66    if (wd->offtext) eina_stringshare_del(wd->offtext);
  67    free(wd);
  68 }
  69
  70 static void
  71 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
  72 {
  73    Widget_Data *wd = elm_widget_data_get(obj);
  74    if (!wd) return;
  75    if (elm_widget_focus_get(obj))
  76      {
  77         edje_object_signal_emit(wd->chk, "elm,action,focus", "elm");
  78         evas_object_focus_set(wd->chk, EINA_TRUE);
  79      }
  80    else
  81      {
  82         edje_object_signal_emit(wd->chk, "elm,action,unfocus", "elm");
  83         evas_object_focus_set(wd->chk, EINA_FALSE);
  84      }
  85 }
  86
  87 static void
  88 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
  89 {
  90    Widget_Data *wd = elm_widget_data_get(obj);
  91    if (!wd) return;
  92    edje_object_mirrored_set(wd->chk, rtl);
  93 }
  94
  95 static void
  96 _theme_hook(Evas_Object *obj)
  97 {
  98    unsigned int counter = 0;
  99    unsigned int i = 1;
 100    unsigned int length = 0;
 101    const char *str = NULL;
 102    char labels[128] ;
 103    char buffer[PATH_MAX]={'\0',};
 104    char s1[PATH_MAX] = {'\0',};
 105    Widget_Data *wd = elm_widget_data_get(obj);
 106    if (!wd) return;
 107
 108    _elm_widget_mirrored_reload(obj);
 109    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 110    _elm_theme_object_set(obj, wd->chk, "check", "base", elm_widget_style_get(obj));
 111    if (wd->icon)
 112      edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 113    else
 114      edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 115    if (wd->state)
 116      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 117    else
 118      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 119    if (wd->label)
 120      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 121    else
 122      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 123    edje_object_part_text_set(wd->chk, "elm.text", wd->label);
 124    edje_object_part_text_set(wd->chk, "elm.ontext", wd->ontext);
 125    edje_object_part_text_set(wd->chk, "elm.offtext", wd->offtext);
 126    if (elm_widget_disabled_get(obj))
 127      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 128    edje_object_message_signal_process(wd->chk);
 129    edje_object_scale_set(wd->chk, elm_widget_scale_get(obj) * _elm_config->scale);
 130
 131    //introduced internationalization of additional text parts used in style
 132    while (1)
 133      {
 134         // s1 is  used  to store part name while buffer is used to store the part's value string
 135         snprintf(labels,sizeof(labels),"label_%d",i++);
 136         str = edje_object_data_get(wd->chk,labels);
 137         if (!str) break;
 138         length = strlen(str);
 139         while ((str[counter]!= ' ') && (counter < length))
 140           counter++;
 141         if (counter == length)
 142           continue;
 143         strncpy(s1, str, counter);
 144         s1[counter] = '\0';
 145         strncpy(buffer, str + counter, sizeof(buffer));
 146         edje_object_part_text_set(wd->chk, s1, E_(buffer));
 147      }
 148    _sizing_eval(obj);
 149 }
 150
 151 static void
 152 _disable_hook(Evas_Object *obj)
 153 {
 154    Widget_Data *wd = elm_widget_data_get(obj);
 155    if (!wd) return;
 156    if (elm_widget_disabled_get(obj))
 157      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 158    else
 159      edje_object_signal_emit(wd->chk, "elm,state,enabled", "elm");
 160 }
 161
 162 static void
 163 _sizing_eval(Evas_Object *obj)
 164 {
 165    Widget_Data *wd = elm_widget_data_get(obj);
 166    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 167    if (!wd) return;
 168    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 169    edje_object_size_min_restricted_calc(wd->chk, &minw, &minh, minw, minh);
 170    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 171    evas_object_size_hint_min_set(obj, minw, minh);
 172    evas_object_size_hint_max_set(obj, maxw, maxh);
 173 }
 174
 175 static void
 176 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 177 {
 178    Widget_Data *wd = elm_widget_data_get(data);
 179    if (!wd) return;
 180    if (obj != wd->icon) return;
 181    _sizing_eval(data);
 182 }
 183
 184 static void
 185 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 186 {
 187    Widget_Data *wd = elm_widget_data_get(obj);
 188    Evas_Object *sub = event_info;
 189    if (!wd) return;
 190    if (sub == wd->icon)
 191      {
 192         edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 193         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 194                                             _changed_size_hints, obj);
 195         wd->icon = NULL;
 196         _sizing_eval(obj);
 197         edje_object_message_signal_process(wd->chk);
 198      }
 199 }
 200
 201 static void
 202 _signal_check_off(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 203 {
 204    Widget_Data *wd = elm_widget_data_get(data);
 205    if (!wd) return;
 206    wd->state = EINA_FALSE;
 207    if (wd->statep) *wd->statep = wd->state;
 208    edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 209    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 210 }
 211
 212 static void
 213 _signal_check_on(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 214 {
 215    Widget_Data *wd = elm_widget_data_get(data);
 216    if (!wd) return;
 217    wd->state = EINA_TRUE;
 218    if (wd->statep) *wd->statep = wd->state;
 219    edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 220    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 221 }
 222
 223 static void
 224 _signal_check_toggle(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 225 {
 226    _activate(data);
 227 }
 228
 229 static void
 230 _activate_hook(Evas_Object *obj)
 231 {
 232    _activate(obj);
 233 }
 234
 235 static void
 236 _content_set_hook(Evas_Object *obj, const char *part, Evas_Object *content)
 237 {
 238    ELM_CHECK_WIDTYPE(obj, widtype);
 239    Widget_Data *wd;
 240
 241    if (strcmp(part, "icon")) return;
 242    wd = elm_widget_data_get(obj);
 243    if (!wd) return;
 244    if (wd->icon == content) return;
 245    if (wd->icon) evas_object_del(wd->icon);
 246    wd->icon = content;
 247    if (content)
 248      {
 249         elm_widget_sub_object_add(obj, content);
 250         evas_object_event_callback_add(content,
 251                                        EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 252                                        _changed_size_hints, obj);
 253         edje_object_part_swallow(wd->chk, "elm.swallow.content", content);
 254         edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 255         edje_object_message_signal_process(wd->chk);
 256      }
 257    _sizing_eval(obj);
 258 }
 259
 260 static Evas_Object *
 261 _content_get_hook(const Evas_Object *obj, const char *part)
 262 {
 263    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 264    Widget_Data *wd;
 265
 266    if (strcmp(part, "icon")) return NULL;
 267    wd = elm_widget_data_get(obj);
 268    if (!wd) return NULL;
 269    return wd->icon;
 270 }
 271
 272 static Evas_Object *
 273 _content_unset_hook(Evas_Object *obj, const char *part)
 274 {
 275    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 276    Widget_Data *wd;
 277
 278    if (strcmp(part, "icon")) return NULL;
 279    wd = elm_widget_data_get(obj);
 280    if (!wd) return NULL;
 281    if (!wd->icon) return NULL;
 282    Evas_Object *icon = wd->icon;
 283    elm_widget_sub_object_del(obj, wd->icon);
 284    evas_object_event_callback_del_full(wd->icon,
 285                                        EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 286                                        _changed_size_hints, obj);
 287    edje_object_part_unswallow(wd->chk, wd->icon);
 288    wd->icon = NULL;
 289    return icon;
 290 }
 291
 292 static void
 293 _activate(Evas_Object *obj)
 294 {
 295    Widget_Data *wd = elm_widget_data_get(obj);
 296    if (!wd) return;
 297    if ((_elm_config->access_mode == ELM_ACCESS_MODE_OFF) ||
 298        (_elm_access_2nd_click_timeout(obj)))
 299      {
 300         wd->state = !wd->state;
 301         if (wd->statep) *wd->statep = wd->state;
 302         if (wd->state)
 303           {
 304              edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 305              if (_elm_config->access_mode != ELM_ACCESS_MODE_OFF)
 306                {
 307                   if (!wd->ontext)
 308                     {
 309                        _elm_access_say(E_("State: On"));
 310                     }
 311                   else
 312                      _elm_access_say(E_("State: On"));
 313                }
 314           }
 315         else
 316           {
 317              edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 318              if (_elm_config->access_mode != ELM_ACCESS_MODE_OFF)
 319                {
 320                   if (!wd->offtext)
 321                     {
 322                        _elm_access_say(E_("State: Off"));
 323                     }
 324                   else
 325                      _elm_access_say(E_("State: Off"));
 326                }
 327           }
 328         evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 329      }
 330 }
 331
 332 static void
 333 _elm_check_label_set(Evas_Object *obj, const char *item, const char *label)
 334 {
 335    ELM_CHECK_WIDTYPE(obj, widtype);
 336    Widget_Data *wd = elm_widget_data_get(obj);
 337    if (!wd) return;
 338    if ((!item) || (!strcmp(item, "default")))
 339      {
 340         eina_stringshare_replace(&wd->label, label);
 341         if (label)
 342            edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 343         else
 344            edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 345         edje_object_message_signal_process(wd->chk);
 346         edje_object_part_text_set(wd->chk, "elm.text", label);
 347      }
 348    else if ((item) && (!strcmp(item, "on")))
 349      {
 350         eina_stringshare_replace(&wd->ontext, label);
 351         edje_object_part_text_set(wd->chk, "elm.ontext", wd->ontext);
 352      }
 353    else if ((item) && (!strcmp(item, "off")))
 354      {
 355         eina_stringshare_replace(&wd->offtext, label);
 356         edje_object_part_text_set(wd->chk, "elm.offtext", wd->offtext);
 357      }
 358    _sizing_eval(obj);
 359 }
 360
 361 static const char *
 362 _elm_check_label_get(const Evas_Object *obj, const char *item)
 363 {
 364    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 365    Widget_Data *wd = elm_widget_data_get(obj);
 366    if (!wd) return NULL;
 367    if ((!item) || (!strcmp(item, "default")))
 368       return wd->label;
 369    else if ((item) && (!strcmp(item, "on")))
 370       return wd->ontext;
 371    else if ((item) && (!strcmp(item, "off")))
 372       return wd->offtext;
 373    return NULL;
 374 }
 375
 376 static char *
 377 _access_info_cb(void *data __UNUSED__, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 378 {
 379    const char *txt = elm_widget_access_info_get(obj);
 380    if (!txt) txt = _elm_check_label_get(obj, NULL);
 381    if (txt) return strdup(txt);
 382    return NULL;
 383 }
 384
 385 static char *
 386 _access_state_cb(void *data, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 387 {
 388    Evas_Object *o = data;
 389    Widget_Data *wd = elm_widget_data_get(o);
 390    if (!wd) return NULL;
 391    if (elm_widget_disabled_get(obj))
 392      return strdup(E_("State: Disabled"));
 393    if (wd->state)
 394      {
 395         if (wd->ontext)
 396           {
 397              char buf[1024];
 398
 399              snprintf(buf, sizeof(buf), "%s: %s", E_("State"), wd->ontext);
 400              return strdup(buf);
 401           }
 402         else
 403            return strdup(E_("State: On"));
 404      }
 405    if (wd->offtext)
 406      {
 407         char buf[1024];
 408
 409         snprintf(buf, sizeof(buf), "%s: %s", E_("State"), wd->offtext);
 410         return strdup(buf);
 411      }
 412    return strdup(E_("State: Off"));
 413 }
 414
 415 EAPI Evas_Object *
 416 elm_check_add(Evas_Object *parent)
 417 {
 418    Evas_Object *obj;
 419    Evas *e;
 420    Widget_Data *wd;
 421
 422    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 423
 424    ELM_SET_WIDTYPE(widtype, "check");
 425    elm_widget_type_set(obj, "check");
 426    elm_widget_sub_object_add(parent, obj);
 427    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 428    elm_widget_data_set(obj, wd);
 429    elm_widget_del_hook_set(obj, _del_hook);
 430    elm_widget_theme_hook_set(obj, _theme_hook);
 431    elm_widget_disable_hook_set(obj, _disable_hook);
 432    elm_widget_can_focus_set(obj, EINA_TRUE);
 433    elm_widget_activate_hook_set(obj, _activate_hook);
 434    elm_widget_event_hook_set(obj, _event_hook);
 435    elm_widget_text_set_hook_set(obj, _elm_check_label_set);
 436    elm_widget_text_get_hook_set(obj, _elm_check_label_get);
 437    elm_widget_content_set_hook_set(obj, _content_set_hook);
 438    elm_widget_content_get_hook_set(obj, _content_get_hook);
 439    elm_widget_content_unset_hook_set(obj, _content_unset_hook);
 440
 441    wd->chk = edje_object_add(e);
 442    _elm_theme_object_set(obj, wd->chk, "check", "base", "default");
 443    edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
 444                                    _signal_check_on, obj);
 445    edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
 446                                    _signal_check_off, obj);
 447    edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
 448                                    _signal_check_toggle, obj);
 449    elm_widget_resize_object_set(obj, wd->chk);
 450
 451    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 452
 453    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 454    _sizing_eval(obj);
 455
 456    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 457    // TODO: and save some bytes, making descriptions per-class and not instance!
 458    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 459
 460    _elm_access_object_register(obj, wd->chk);
 461    _elm_access_text_set(_elm_access_object_get(obj),
 462                         ELM_ACCESS_TYPE, E_("Check"));
 463    _elm_access_callback_set(_elm_access_object_get(obj),
 464                             ELM_ACCESS_INFO, _access_info_cb, obj);
 465    _elm_access_callback_set(_elm_access_object_get(obj),
 466                             ELM_ACCESS_STATE, _access_state_cb, obj);
 467    return obj;
 468 }
 469
 470 EAPI void
 471 elm_check_label_set(Evas_Object *obj, const char *label)
 472 {
 473    _elm_check_label_set(obj, NULL, label);
 474 }
 475
 476 EAPI const char *
 477 elm_check_label_get(const Evas_Object *obj)
 478 {
 479    return _elm_check_label_get(obj, NULL);
 480 }
 481
 482 EAPI void
 483 elm_check_states_labels_set(Evas_Object *obj, const char *ontext, const char *offtext)
 484 {
 485    _elm_check_label_set(obj, "on", ontext);
 486    _elm_check_label_set(obj, "off", offtext);
 487 }
 488
 489 EAPI void
 490 elm_check_states_labels_get(const Evas_Object *obj, const char **ontext, const char **offtext)
 491 {
 492    if (ontext) *ontext = _elm_check_label_get(obj, "on");
 493    if (offtext) *offtext = _elm_check_label_get(obj, "off");
 494 }
 495
 496 EAPI void
 497 elm_check_icon_set(Evas_Object *obj, Evas_Object *icon)
 498 {
 499    _content_set_hook(obj, "icon", icon);
 500 }
 501
 502 EAPI Evas_Object *
 503 elm_check_icon_get(const Evas_Object *obj)
 504 {
 505    return _content_get_hook(obj, "icon");
 506 }
 507
 508 EAPI Evas_Object *
 509 elm_check_icon_unset(Evas_Object *obj)
 510 {
 511    return _content_unset_hook(obj, "icon");
 512 }
 513
 514 EAPI void
 515 elm_check_state_set(Evas_Object *obj, Eina_Bool state)
 516 {
 517    ELM_CHECK_WIDTYPE(obj, widtype);
 518    Widget_Data *wd = elm_widget_data_get(obj);
 519    if (!wd) return;
 520    if (state != wd->state)
 521      {
 522         wd->state = state;
 523         if (wd->statep) *wd->statep = wd->state;
 524         if (wd->state)
 525           edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 526         else
 527           edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 528      }
 529    edje_object_message_signal_process(wd->chk);
 530 }
 531
 532 EAPI Eina_Bool
 533 elm_check_state_get(const Evas_Object *obj)
 534 {
 535    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 536    Widget_Data *wd = elm_widget_data_get(obj);
 537    if (!wd) return EINA_FALSE;
 538    return wd->state;
 539 }
 540
 541 EAPI void
 542 elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
 543 {
 544    ELM_CHECK_WIDTYPE(obj, widtype);
 545    Widget_Data *wd = elm_widget_data_get(obj);
 546    if (!wd) return;
 547    if (statep)
 548      {
 549         wd->statep = statep;
 550         if (*wd->statep != wd->state)
 551           {
 552              wd->state = *wd->statep;
 553              if (wd->state)
 554                edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 555              else
 556                edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 557           }
 558      }
 559    else
 560      wd->statep = NULL;
 561 }