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    edje_object_part_unswallow(wd->chk, wd->icon);
 273    wd->icon = NULL;
 274    return icon;
 275 }
 276
 277 static void
 278 _activate(Evas_Object *obj)
 279 {
 280    Widget_Data *wd = elm_widget_data_get(obj);
 281    if (!wd) return;
 282    wd->state = !wd->state;
 283    if (wd->statep) *wd->statep = wd->state;
 284    if (wd->state)
 285      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 286    else
 287      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 288    evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 289 }
 290
 291 static void
 292 _elm_check_label_set(Evas_Object *obj, const char *item, const char *label)
 293 {
 294    ELM_CHECK_WIDTYPE(obj, widtype);
 295    Widget_Data *wd = elm_widget_data_get(obj);
 296    if (item && strcmp(item, "default")) return;
 297    if (!wd) return;
 298    eina_stringshare_replace(&wd->label, label);
 299    if (label)
 300      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 301    else
 302      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 303    edje_object_message_signal_process(wd->chk);
 304    edje_object_part_text_set(wd->chk, "elm.text", label);
 305    _sizing_eval(obj);
 306 }
 307
 308 static const char *
 309 _elm_check_label_get(const Evas_Object *obj, const char *item)
 310 {
 311    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 312    Widget_Data *wd = elm_widget_data_get(obj);
 313    if (item && strcmp(item, "default")) return NULL;
 314    if (!wd) return NULL;
 315    return wd->label;
 316 }
 317
 318 EAPI Evas_Object *
 319 elm_check_add(Evas_Object *parent)
 320 {
 321    Evas_Object *obj;
 322    Evas *e;
 323    Widget_Data *wd;
 324
 325    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 326
 327    ELM_SET_WIDTYPE(widtype, "check");
 328    elm_widget_type_set(obj, "check");
 329    elm_widget_sub_object_add(parent, obj);
 330    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 331    elm_widget_data_set(obj, wd);
 332    elm_widget_del_hook_set(obj, _del_hook);
 333    elm_widget_theme_hook_set(obj, _theme_hook);
 334    elm_widget_disable_hook_set(obj, _disable_hook);
 335    elm_widget_can_focus_set(obj, EINA_TRUE);
 336    elm_widget_activate_hook_set(obj, _activate_hook);
 337    elm_widget_event_hook_set(obj, _event_hook);
 338    elm_widget_text_set_hook_set(obj, _elm_check_label_set);
 339    elm_widget_text_get_hook_set(obj, _elm_check_label_get);
 340    elm_widget_content_set_hook_set(obj, _content_set_hook);
 341    elm_widget_content_get_hook_set(obj, _content_get_hook);
 342    elm_widget_content_unset_hook_set(obj, _content_unset_hook);
 343
 344    wd->chk = edje_object_add(e);
 345    _elm_theme_object_set(obj, wd->chk, "check", "base", "default");
 346    edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
 347                                    _signal_check_on, obj);
 348    edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
 349                                    _signal_check_off, obj);
 350    edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
 351                                    _signal_check_toggle, obj);
 352    elm_widget_resize_object_set(obj, wd->chk);
 353
 354    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 355
 356    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 357    _sizing_eval(obj);
 358
 359    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 360    // TODO: and save some bytes, making descriptions per-class and not instance!
 361    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 362    return obj;
 363 }
 364
 365 EAPI void
 366 elm_check_label_set(Evas_Object *obj, const char *label)
 367 {
 368    _elm_check_label_set(obj, NULL, label);
 369 }
 370
 371 EAPI const char *
 372 elm_check_label_get(const Evas_Object *obj)
 373 {
 374    return _elm_check_label_get(obj, NULL);
 375 }
 376
 377 EAPI void
 378 elm_check_icon_set(Evas_Object *obj, Evas_Object *icon)
 379 {
 380    _content_set_hook(obj, NULL, icon);
 381 }
 382
 383 EAPI Evas_Object *
 384 elm_check_icon_get(const Evas_Object *obj)
 385 {
 386    return _content_get_hook(obj, NULL);
 387 }
 388
 389 EAPI Evas_Object *
 390 elm_check_icon_unset(Evas_Object *obj)
 391 {
 392    return _content_unset_hook(obj, NULL);
 393 }
 394
 395 EAPI void
 396 elm_check_state_set(Evas_Object *obj, Eina_Bool state)
 397 {
 398    ELM_CHECK_WIDTYPE(obj, widtype);
 399    Widget_Data *wd = elm_widget_data_get(obj);
 400    if (!wd) return;
 401    if (state != wd->state)
 402      {
 403         wd->state = state;
 404         if (wd->statep) *wd->statep = wd->state;
 405         if (wd->state)
 406           edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 407         else
 408           edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 409      }
 410    edje_object_message_signal_process(wd->chk);
 411 }
 412
 413 EAPI Eina_Bool
 414 elm_check_state_get(const Evas_Object *obj)
 415 {
 416    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 417    Widget_Data *wd = elm_widget_data_get(obj);
 418    if (!wd) return EINA_FALSE;
 419    return wd->state;
 420 }
 421
 422 EAPI void
 423 elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
 424 {
 425    ELM_CHECK_WIDTYPE(obj, widtype);
 426    Widget_Data *wd = elm_widget_data_get(obj);
 427    if (!wd) return;
 428    if (statep)
 429      {
 430         wd->statep = statep;
 431         if (*wd->statep != wd->state)
 432           {
 433              wd->state = *wd->statep;
 434              if (wd->state)
 435                edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 436              else
 437                edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 438           }
 439      }
 440    else
 441      wd->statep = NULL;
 442 }