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 _activate(Evas_Object *obj);
  28 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  29                              Evas_Callback_Type type, void *event_info);
  30
  31 static const char SIG_CHANGED[] = "changed";
  32 static const Evas_Smart_Cb_Description _signals[] = {
  33        {SIG_CHANGED, ""},
  34        {NULL, NULL}
  35 };
  36
  37 static Eina_Bool
  38 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  39 {
  40    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
  41    Evas_Event_Key_Down *ev = event_info;
  42    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  43    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  44    if ((strcmp(ev->keyname, "Return")) &&
  45        (strcmp(ev->keyname, "KP_Enter")) &&
  46        (strcmp(ev->keyname, "space")))
  47      return EINA_FALSE;
  48    _activate(obj);
  49    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  50    return EINA_TRUE;
  51 }
  52
  53
  54 static void
  55 _del_hook(Evas_Object *obj)
  56 {
  57    Widget_Data *wd = elm_widget_data_get(obj);
  58    if (!wd) return;
  59    if (wd->label) eina_stringshare_del(wd->label);
  60    free(wd);
  61 }
  62
  63 static void
  64 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
  65 {
  66    Widget_Data *wd = elm_widget_data_get(obj);
  67    if (!wd) return;
  68    if (elm_widget_focus_get(obj))
  69      {
  70         edje_object_signal_emit(wd->chk, "elm,action,focus", "elm");
  71         evas_object_focus_set(wd->chk, EINA_TRUE);
  72      }
  73    else
  74      {
  75         edje_object_signal_emit(wd->chk, "elm,action,unfocus", "elm");
  76         evas_object_focus_set(wd->chk, EINA_FALSE);
  77      }
  78 }
  79
  80 static void
  81 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
  82 {
  83    Widget_Data *wd = elm_widget_data_get(obj);
  84    if (!wd) return;
  85    edje_object_mirrored_set(wd->chk, rtl);
  86 }
  87
  88 static void
  89 _theme_hook(Evas_Object *obj)
  90 {
  91    unsigned int counter = 0;
  92    unsigned int i = 1;
  93    unsigned int length = 0;
  94    const char *str = NULL;
  95    char labels[128] ;
  96    char buffer[PATH_MAX]={'\0',};
  97    char s1[PATH_MAX] = {'\0',};
  98    Widget_Data *wd = elm_widget_data_get(obj);
  99    if (!wd) return;
 100
 101    _elm_widget_mirrored_reload(obj);
 102    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 103    _elm_theme_object_set(obj, wd->chk, "check", "base", elm_widget_style_get(obj));
 104    if (wd->icon)
 105      edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 106    else
 107      edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 108    if (wd->state)
 109      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 110    else
 111      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 112    if (wd->label)
 113      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 114    else
 115      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 116    edje_object_part_text_set(wd->chk, "elm.text", wd->label);
 117    if (elm_widget_disabled_get(obj))
 118      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 119    edje_object_message_signal_process(wd->chk);
 120    edje_object_scale_set(wd->chk, elm_widget_scale_get(obj) * _elm_config->scale);
 121
 122    //introduced internationalization of additional text parts used in style
 123    while (1)
 124      {
 125         // s1 is  used  to store part name while buffer is used to store the part's value string
 126         snprintf(labels,sizeof(labels),"label_%d",i++);
 127         str = edje_object_data_get(wd->chk,labels);
 128         if (!str) break;
 129         length = strlen(str);
 130         while ((str[counter]!= ' ') && (counter < length))
 131           counter++;
 132         if (counter == length)
 133           continue;
 134         strncpy(s1, str, counter);
 135         s1[counter] = '\0';
 136         strncpy(buffer, str + counter, sizeof(buffer));
 137         edje_object_part_text_set(wd->chk, s1, E_(buffer));
 138      }
 139    _sizing_eval(obj);
 140 }
 141
 142 static void
 143 _disable_hook(Evas_Object *obj)
 144 {
 145    Widget_Data *wd = elm_widget_data_get(obj);
 146    if (!wd) return;
 147    if (elm_widget_disabled_get(obj))
 148      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 149    else
 150      edje_object_signal_emit(wd->chk, "elm,state,enabled", "elm");
 151 }
 152
 153 static void
 154 _sizing_eval(Evas_Object *obj)
 155 {
 156    Widget_Data *wd = elm_widget_data_get(obj);
 157    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 158    if (!wd) return;
 159    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 160    edje_object_size_min_restricted_calc(wd->chk, &minw, &minh, minw, minh);
 161    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 162    evas_object_size_hint_min_set(obj, minw, minh);
 163    evas_object_size_hint_max_set(obj, maxw, maxh);
 164 }
 165
 166 static void
 167 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 168 {
 169    Widget_Data *wd = elm_widget_data_get(data);
 170    if (!wd) return;
 171    if (obj != wd->icon) return;
 172    Evas_Coord mw, mh;
 173    evas_object_size_hint_min_get(obj, &mw, &mh);
 174    _sizing_eval(data);
 175 }
 176
 177 static void
 178 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 179 {
 180    Widget_Data *wd = elm_widget_data_get(obj);
 181    Evas_Object *sub = event_info;
 182    if (!wd) return;
 183    if (sub == wd->icon)
 184      {
 185         edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 186         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 187                                             _changed_size_hints, obj);
 188         wd->icon = NULL;
 189         _sizing_eval(obj);
 190         edje_object_message_signal_process(wd->chk);
 191      }
 192 }
 193
 194 static void
 195 _signal_check_off(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 196 {
 197    Widget_Data *wd = elm_widget_data_get(data);
 198    if (!wd) return;
 199    wd->state = EINA_FALSE;
 200    if (wd->statep) *wd->statep = wd->state;
 201    edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 202    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 203 }
 204
 205 static void
 206 _signal_check_on(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 207 {
 208    Widget_Data *wd = elm_widget_data_get(data);
 209    if (!wd) return;
 210    wd->state = EINA_TRUE;
 211    if (wd->statep) *wd->statep = wd->state;
 212    edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 213    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 214 }
 215
 216 static void
 217 _signal_check_toggle(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 218 {
 219    _activate(data);
 220 }
 221
 222 static void
 223 _activate_hook(Evas_Object *obj)
 224 {
 225    _activate(obj);
 226 }
 227
 228 static void
 229 _activate(Evas_Object *obj)
 230 {
 231    Widget_Data *wd = elm_widget_data_get(obj);
 232    if (!wd) return;
 233    wd->state = !wd->state;
 234    if (wd->statep) *wd->statep = wd->state;
 235    if (wd->state)
 236      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 237    else
 238      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 239    evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 240 }
 241
 242 static void
 243 _elm_check_label_set(Evas_Object *obj, const char *item, const char *label)
 244 {
 245    ELM_CHECK_WIDTYPE(obj, widtype);
 246    Widget_Data *wd = elm_widget_data_get(obj);
 247    if (item && strcmp(item, "default")) return;
 248    if (!wd) return;
 249    eina_stringshare_replace(&wd->label, label);
 250    if (label)
 251      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 252    else
 253      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 254    edje_object_message_signal_process(wd->chk);
 255    edje_object_part_text_set(wd->chk, "elm.text", label);
 256    _sizing_eval(obj);
 257 }
 258
 259 static const char *
 260 _elm_check_label_get(const Evas_Object *obj, const char *item)
 261 {
 262    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 263    Widget_Data *wd = elm_widget_data_get(obj);
 264    if (item && strcmp(item, "default")) return NULL;
 265    if (!wd) return NULL;
 266    return wd->label;
 267 }
 268
 269 EAPI Evas_Object *
 270 elm_check_add(Evas_Object *parent)
 271 {
 272    Evas_Object *obj;
 273    Evas *e;
 274    Widget_Data *wd;
 275
 276    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 277
 278    ELM_SET_WIDTYPE(widtype, "check");
 279    elm_widget_type_set(obj, "check");
 280    elm_widget_sub_object_add(parent, obj);
 281    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 282    elm_widget_data_set(obj, wd);
 283    elm_widget_del_hook_set(obj, _del_hook);
 284    elm_widget_theme_hook_set(obj, _theme_hook);
 285    elm_widget_disable_hook_set(obj, _disable_hook);
 286    elm_widget_can_focus_set(obj, EINA_TRUE);
 287    elm_widget_activate_hook_set(obj, _activate_hook);
 288    elm_widget_event_hook_set(obj, _event_hook);
 289    elm_widget_text_set_hook_set(obj, _elm_check_label_set);
 290    elm_widget_text_get_hook_set(obj, _elm_check_label_get);
 291
 292    wd->chk = edje_object_add(e);
 293    _elm_theme_object_set(obj, wd->chk, "check", "base", "default");
 294    edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
 295                                    _signal_check_on, obj);
 296    edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
 297                                    _signal_check_off, obj);
 298    edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
 299                                    _signal_check_toggle, obj);
 300    elm_widget_resize_object_set(obj, wd->chk);
 301
 302    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 303
 304    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 305    _sizing_eval(obj);
 306
 307    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 308    // TODO: and save some bytes, making descriptions per-class and not instance!
 309    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 310    return obj;
 311 }
 312
 313 EAPI void
 314 elm_check_label_set(Evas_Object *obj, const char *label)
 315 {
 316    _elm_check_label_set(obj, NULL, label);
 317 }
 318
 319 EAPI const char *
 320 elm_check_label_get(const Evas_Object *obj)
 321 {
 322    return _elm_check_label_get(obj, NULL);
 323 }
 324
 325 EAPI void
 326 elm_check_icon_set(Evas_Object *obj, Evas_Object *icon)
 327 {
 328    ELM_CHECK_WIDTYPE(obj, widtype);
 329    Widget_Data *wd = elm_widget_data_get(obj);
 330    if (!wd) return;
 331    if (wd->icon == icon) return;
 332    if (wd->icon) evas_object_del(wd->icon);
 333    wd->icon = icon;
 334    if (icon)
 335      {
 336         elm_widget_sub_object_add(obj, icon);
 337         evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 338                                        _changed_size_hints, obj);
 339         edje_object_part_swallow(wd->chk, "elm.swallow.content", icon);
 340         edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 341         edje_object_message_signal_process(wd->chk);
 342      }
 343    _sizing_eval(obj);
 344 }
 345
 346 EAPI Evas_Object *
 347 elm_check_icon_get(const Evas_Object *obj)
 348 {
 349    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 350    Widget_Data *wd = elm_widget_data_get(obj);
 351    if (!wd) return NULL;
 352    return wd->icon;
 353 }
 354
 355 EAPI Evas_Object *
 356 elm_check_icon_unset(Evas_Object *obj)
 357 {
 358    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 359    Widget_Data *wd = elm_widget_data_get(obj);
 360    if (!wd) return NULL;
 361    if (!wd->icon) return NULL;
 362    Evas_Object *icon = wd->icon;
 363    elm_widget_sub_object_del(obj, wd->icon);
 364    edje_object_part_unswallow(wd->chk, wd->icon);
 365    wd->icon = NULL;
 366    return icon;
 367 }
 368
 369 EAPI void
 370 elm_check_state_set(Evas_Object *obj, Eina_Bool state)
 371 {
 372    ELM_CHECK_WIDTYPE(obj, widtype);
 373    Widget_Data *wd = elm_widget_data_get(obj);
 374    if (!wd) return;
 375    if (state != wd->state)
 376      {
 377         wd->state = state;
 378         if (wd->statep) *wd->statep = wd->state;
 379         if (wd->state)
 380           edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 381         else
 382           edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 383      }
 384    edje_object_message_signal_process(wd->chk);
 385 }
 386
 387 EAPI Eina_Bool
 388 elm_check_state_get(const Evas_Object *obj)
 389 {
 390    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 391    Widget_Data *wd = elm_widget_data_get(obj);
 392    if (!wd) return EINA_FALSE;
 393    return wd->state;
 394 }
 395
 396 EAPI void
 397 elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
 398 {
 399    ELM_CHECK_WIDTYPE(obj, widtype);
 400    Widget_Data *wd = elm_widget_data_get(obj);
 401    if (!wd) return;
 402    if (statep)
 403      {
 404         wd->statep = statep;
 405         if (*wd->statep != wd->state)
 406           {
 407              wd->state = *wd->statep;
 408              if (wd->state)
 409                edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 410              else
 411                edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 412           }
 413      }
 414    else
 415      wd->statep = NULL;
 416 }