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