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 };
  13
  14 static const char *widtype = NULL;
  15 static void _del_hook(Evas_Object *obj);
  16 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  17 static void _theme_hook(Evas_Object *obj);
  18 static void _disable_hook(Evas_Object *obj);
  19 static void _sizing_eval(Evas_Object *obj);
  20 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
  21 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
  22 static void _signal_check_off(void *data, Evas_Object *obj, const char *emission, const char *source);
  23 static void _signal_check_on(void *data, Evas_Object *obj, const char *emission, const char *source);
  24 static void _signal_check_toggle(void *data, Evas_Object *obj, const char *emission, const char *source);
  25 static void _on_focus_hook(void *data, Evas_Object *obj);
  26 static void _activate_hook(Evas_Object *obj);
  27 static void _content_set_hook(Evas_Object *obj, const char *part, Evas_Object *content);
  28 static Evas_Object *_content_get_hook(const Evas_Object *obj, const char *part);
  29 static Evas_Object *_content_unset_hook(Evas_Object *obj, const char *part);
  30
  31 static void _activate(Evas_Object *obj);
  32 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  33                              Evas_Callback_Type type, void *event_info);
  34
  35 static const char SIG_CHANGED[] = "changed";
  36 static const Evas_Smart_Cb_Description _signals[] = {
  37        {SIG_CHANGED, ""},
  38        {NULL, NULL}
  39 };
  40
  41 static Eina_Bool
  42 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  43 {
  44    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
  45    Evas_Event_Key_Down *ev = event_info;
  46    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  47    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  48    if ((strcmp(ev->keyname, "Return")) &&
  49        (strcmp(ev->keyname, "KP_Enter")) &&
  50        (strcmp(ev->keyname, "space")))
  51      return EINA_FALSE;
  52    _activate(obj);
  53    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  54    return EINA_TRUE;
  55 }
  56
  57
  58 static void
  59 _del_hook(Evas_Object *obj)
  60 {
  61    Widget_Data *wd = elm_widget_data_get(obj);
  62    if (!wd) return;
  63    if (wd->label) eina_stringshare_del(wd->label);
  64    free(wd);
  65 }
  66
  67 static void
  68 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
  69 {
  70    Widget_Data *wd = elm_widget_data_get(obj);
  71    if (!wd) return;
  72    if (elm_widget_focus_get(obj))
  73      {
  74         edje_object_signal_emit(wd->chk, "elm,action,focus", "elm");
  75         evas_object_focus_set(wd->chk, EINA_TRUE);
  76      }
  77    else
  78      {
  79         edje_object_signal_emit(wd->chk, "elm,action,unfocus", "elm");
  80         evas_object_focus_set(wd->chk, EINA_FALSE);
  81      }
  82 }
  83
  84 static void
  85 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
  86 {
  87    Widget_Data *wd = elm_widget_data_get(obj);
  88    if (!wd) return;
  89    edje_object_mirrored_set(wd->chk, rtl);
  90 }
  91
  92 static void
  93 _theme_hook(Evas_Object *obj)
  94 {
  95    unsigned int counter = 0;
  96    unsigned int i = 1;
  97    unsigned int length = 0;
  98    const char *str = NULL;
  99    char labels[128] ;
 100    char buffer[PATH_MAX]={'\0',};
 101    char s1[PATH_MAX] = {'\0',};
 102    Widget_Data *wd = elm_widget_data_get(obj);
 103    if (!wd) return;
 104
 105    _elm_widget_mirrored_reload(obj);
 106    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 107    _elm_theme_object_set(obj, wd->chk, "check", "base", elm_widget_style_get(obj));
 108    if (wd->icon)
 109      edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 110    else
 111      edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 112    if (wd->state)
 113      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 114    else
 115      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 116    if (wd->label)
 117      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 118    else
 119      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 120    edje_object_part_text_set(wd->chk, "elm.text", wd->label);
 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
 126    //introduced internationalization of additional text parts used in style
 127    while (1)
 128      {
 129         // s1 is  used  to store part name while buffer is used to store the part's value string
 130         snprintf(labels,sizeof(labels),"label_%d",i++);
 131         str = edje_object_data_get(wd->chk,labels);
 132         if (!str) break;
 133         length = strlen(str);
 134         while ((str[counter]!= ' ') && (counter < length))
 135           counter++;
 136         if (counter == length)
 137           continue;
 138         strncpy(s1, str, counter);
 139         s1[counter] = '\0';
 140         strncpy(buffer, str + counter, sizeof(buffer));
 141         edje_object_part_text_set(wd->chk, s1, E_(buffer));
 142      }
 143    _sizing_eval(obj);
 144 }
 145
 146 static void
 147 _disable_hook(Evas_Object *obj)
 148 {
 149    Widget_Data *wd = elm_widget_data_get(obj);
 150    if (!wd) return;
 151    if (elm_widget_disabled_get(obj))
 152      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 153    else
 154      edje_object_signal_emit(wd->chk, "elm,state,enabled", "elm");
 155 }
 156
 157 static void
 158 _sizing_eval(Evas_Object *obj)
 159 {
 160    Widget_Data *wd = elm_widget_data_get(obj);
 161    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 162    if (!wd) return;
 163    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 164    edje_object_size_min_restricted_calc(wd->chk, &minw, &minh, minw, minh);
 165    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 166    evas_object_size_hint_min_set(obj, minw, minh);
 167    evas_object_size_hint_max_set(obj, maxw, maxh);
 168 }
 169
 170 static void
 171 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 172 {
 173    Widget_Data *wd = elm_widget_data_get(data);
 174    if (!wd) return;
 175    if (obj != wd->icon) return;
 176    Evas_Coord mw, mh;
 177    evas_object_size_hint_min_get(obj, &mw, &mh);
 178    _sizing_eval(data);
 179 }
 180
 181 static void
 182 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 183 {
 184    Widget_Data *wd = elm_widget_data_get(obj);
 185    Evas_Object *sub = event_info;
 186    if (!wd) return;
 187    if (sub == wd->icon)
 188      {
 189         edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 190         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 191                                             _changed_size_hints, obj);
 192         wd->icon = NULL;
 193         _sizing_eval(obj);
 194         edje_object_message_signal_process(wd->chk);
 195      }
 196 }
 197
 198 static void
 199 _signal_check_off(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 200 {
 201    Widget_Data *wd = elm_widget_data_get(data);
 202    if (!wd) return;
 203    wd->state = EINA_FALSE;
 204    if (wd->statep) *wd->statep = wd->state;
 205    edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 206    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 207 }
 208
 209 static void
 210 _signal_check_on(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 211 {
 212    Widget_Data *wd = elm_widget_data_get(data);
 213    if (!wd) return;
 214    wd->state = EINA_TRUE;
 215    if (wd->statep) *wd->statep = wd->state;
 216    edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 217    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 218 }
 219
 220 static void
 221 _signal_check_toggle(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 222 {
 223    _activate(data);
 224 }
 225
 226 static void
 227 _activate_hook(Evas_Object *obj)
 228 {
 229    _activate(obj);
 230 }
 231
 232 static void
 233 _content_set_hook(Evas_Object *obj, const char *part __UNUSED__, Evas_Object *content)
 234 {
 235    ELM_CHECK_WIDTYPE(obj, widtype);
 236    Widget_Data *wd = elm_widget_data_get(obj);
 237    if (!wd) return;
 238    if (wd->icon == content) return;
 239    if (wd->icon) evas_object_del(wd->icon);
 240    wd->icon = content;
 241    if (content)
 242      {
 243         elm_widget_sub_object_add(obj, content);
 244         evas_object_event_callback_add(content,
 245                                        EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 246                                        _changed_size_hints, obj);
 247         edje_object_part_swallow(wd->chk, "elm.swallow.content", content);
 248         edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 249         edje_object_message_signal_process(wd->chk);
 250      }
 251    _sizing_eval(obj);
 252 }
 253
 254 static Evas_Object *
 255 _content_get_hook(const Evas_Object *obj, const char *part __UNUSED__)
 256 {
 257    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 258    Widget_Data *wd = elm_widget_data_get(obj);
 259    if (!wd) return NULL;
 260    return wd->icon;
 261 }
 262
 263 static Evas_Object *
 264 _content_unset_hook(Evas_Object *obj, const char *part __UNUSED__)
 265 {
 266    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 267    Widget_Data *wd = elm_widget_data_get(obj);
 268    if (!wd) return NULL;
 269    if (!wd->icon) return NULL;
 270    Evas_Object *icon = wd->icon;
 271    elm_widget_sub_object_del(obj, wd->icon);
 272    evas_object_event_callback_del_full(wd->icon,
 273                                        EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 274                                        _changed_size_hints, obj);
 275    edje_object_part_unswallow(wd->chk, wd->icon);
 276    wd->icon = NULL;
 277    return icon;
 278 }
 279
 280 static void
 281 _activate(Evas_Object *obj)
 282 {
 283    Widget_Data *wd = elm_widget_data_get(obj);
 284    if (!wd) return;
 285    if ((_elm_config->access_mode == ELM_ACCESS_MODE_OFF) ||
 286        (_elm_access_2nd_click_timeout(obj)))
 287      {
 288         if (_elm_config->access_mode != ELM_ACCESS_MODE_OFF)
 289            wd->state = !wd->state;
 290         if (wd->statep) *wd->statep = wd->state;
 291         if (wd->state)
 292           {
 293              edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 294              _elm_access_say(E_("State: On"));
 295           }
 296         else
 297           {
 298              edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 299              _elm_access_say(E_("State: Off"));
 300           }
 301         evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 302      }
 303 }
 304
 305 static void
 306 _elm_check_label_set(Evas_Object *obj, const char *item, const char *label)
 307 {
 308    ELM_CHECK_WIDTYPE(obj, widtype);
 309    Widget_Data *wd = elm_widget_data_get(obj);
 310    if (item && strcmp(item, "default")) return;
 311    if (!wd) return;
 312    eina_stringshare_replace(&wd->label, label);
 313    if (label)
 314      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 315    else
 316      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 317    edje_object_message_signal_process(wd->chk);
 318    edje_object_part_text_set(wd->chk, "elm.text", label);
 319    _sizing_eval(obj);
 320 }
 321
 322 static const char *
 323 _elm_check_label_get(const Evas_Object *obj, const char *item)
 324 {
 325    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 326    Widget_Data *wd = elm_widget_data_get(obj);
 327    if (item && strcmp(item, "default")) return NULL;
 328    if (!wd) return NULL;
 329    return wd->label;
 330 }
 331
 332 static char *
 333 _access_info_cb(void *data __UNUSED__, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 334 {
 335    char *txt = (char *)elm_widget_access_info_get(obj);
 336    if (!txt) txt = (char *)_elm_check_label_get(obj, NULL);
 337    if (txt) return strdup(txt);
 338    return txt;
 339 }
 340
 341 static char *
 342 _access_state_cb(void *data, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 343 {
 344    Evas_Object *o = data;
 345    Widget_Data *wd = elm_widget_data_get(o);
 346    if (!wd) return NULL;
 347    if (elm_widget_disabled_get(obj))
 348       return strdup(E_("State: Disabled"));
 349    if (wd->state)
 350       return strdup(E_("State: On"));
 351    return strdup(E_("State: Off"));
 352 }
 353
 354 EAPI Evas_Object *
 355 elm_check_add(Evas_Object *parent)
 356 {
 357    Evas_Object *obj;
 358    Evas *e;
 359    Widget_Data *wd;
 360
 361    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 362
 363    ELM_SET_WIDTYPE(widtype, "check");
 364    elm_widget_type_set(obj, "check");
 365    elm_widget_sub_object_add(parent, obj);
 366    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 367    elm_widget_data_set(obj, wd);
 368    elm_widget_del_hook_set(obj, _del_hook);
 369    elm_widget_theme_hook_set(obj, _theme_hook);
 370    elm_widget_disable_hook_set(obj, _disable_hook);
 371    elm_widget_can_focus_set(obj, EINA_TRUE);
 372    elm_widget_activate_hook_set(obj, _activate_hook);
 373    elm_widget_event_hook_set(obj, _event_hook);
 374    elm_widget_text_set_hook_set(obj, _elm_check_label_set);
 375    elm_widget_text_get_hook_set(obj, _elm_check_label_get);
 376    elm_widget_content_set_hook_set(obj, _content_set_hook);
 377    elm_widget_content_get_hook_set(obj, _content_get_hook);
 378    elm_widget_content_unset_hook_set(obj, _content_unset_hook);
 379
 380    wd->chk = edje_object_add(e);
 381    _elm_theme_object_set(obj, wd->chk, "check", "base", "default");
 382    edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
 383                                    _signal_check_on, obj);
 384    edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
 385                                    _signal_check_off, obj);
 386    edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
 387                                    _signal_check_toggle, obj);
 388    elm_widget_resize_object_set(obj, wd->chk);
 389
 390    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 391
 392    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 393    _sizing_eval(obj);
 394
 395    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 396    // TODO: and save some bytes, making descriptions per-class and not instance!
 397    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 398
 399    _elm_access_object_register(obj, wd->chk);
 400    _elm_access_text_set(_elm_access_object_get(obj),
 401                         ELM_ACCESS_TYPE, E_("Check"));
 402    _elm_access_callback_set(_elm_access_object_get(obj),
 403                             ELM_ACCESS_INFO, _access_info_cb, obj);
 404    _elm_access_callback_set(_elm_access_object_get(obj),
 405                             ELM_ACCESS_STATE, _access_state_cb, obj);
 406    return obj;
 407 }
 408
 409 EAPI void
 410 elm_check_label_set(Evas_Object *obj, const char *label)
 411 {
 412    _elm_check_label_set(obj, NULL, label);
 413 }
 414
 415 EAPI const char *
 416 elm_check_label_get(const Evas_Object *obj)
 417 {
 418    return _elm_check_label_get(obj, NULL);
 419 }
 420
 421 EAPI void
 422 elm_check_icon_set(Evas_Object *obj, Evas_Object *icon)
 423 {
 424    _content_set_hook(obj, NULL, icon);
 425 }
 426
 427 EAPI Evas_Object *
 428 elm_check_icon_get(const Evas_Object *obj)
 429 {
 430    return _content_get_hook(obj, NULL);
 431 }
 432
 433 EAPI Evas_Object *
 434 elm_check_icon_unset(Evas_Object *obj)
 435 {
 436    return _content_unset_hook(obj, NULL);
 437 }
 438
 439 EAPI void
 440 elm_check_state_set(Evas_Object *obj, Eina_Bool state)
 441 {
 442    ELM_CHECK_WIDTYPE(obj, widtype);
 443    Widget_Data *wd = elm_widget_data_get(obj);
 444    if (!wd) return;
 445    if (state != wd->state)
 446      {
 447         wd->state = state;
 448         if (wd->statep) *wd->statep = wd->state;
 449         if (wd->state)
 450           edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 451         else
 452           edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 453      }
 454    edje_object_message_signal_process(wd->chk);
 455 }
 456
 457 EAPI Eina_Bool
 458 elm_check_state_get(const Evas_Object *obj)
 459 {
 460    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 461    Widget_Data *wd = elm_widget_data_get(obj);
 462    if (!wd) return EINA_FALSE;
 463    return wd->state;
 464 }
 465
 466 EAPI void
 467 elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
 468 {
 469    ELM_CHECK_WIDTYPE(obj, widtype);
 470    Widget_Data *wd = elm_widget_data_get(obj);
 471    if (!wd) return;
 472    if (statep)
 473      {
 474         wd->statep = statep;
 475         if (*wd->statep != wd->state)
 476           {
 477              wd->state = *wd->statep;
 478              if (wd->state)
 479                edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 480              else
 481                edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 482           }
 483      }
 484    else
 485      wd->statep = NULL;
 486 }