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    Widget_Data *wd = elm_widget_data_get(obj);
  92    if (!wd) return;
  93    _elm_widget_mirrored_reload(obj);
  94    _mirrored_set(obj, elm_widget_mirrored_get(obj));
  95    _elm_theme_object_set(obj, wd->chk, "check", "base", elm_widget_style_get(obj));
  96    if (wd->icon)
  97      edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
  98    else
  99      edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 100    if (wd->state)
 101      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 102    else
 103      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 104    if (wd->label)
 105      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 106    else
 107      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 108    edje_object_part_text_set(wd->chk, "elm.text", wd->label);
 109    if (elm_widget_disabled_get(obj))
 110      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 111    edje_object_message_signal_process(wd->chk);
 112    edje_object_scale_set(wd->chk, elm_widget_scale_get(obj) * _elm_config->scale);
 113    _sizing_eval(obj);
 114 }
 115
 116 static void
 117 _disable_hook(Evas_Object *obj)
 118 {
 119    Widget_Data *wd = elm_widget_data_get(obj);
 120    if (!wd) return;
 121    if (elm_widget_disabled_get(obj))
 122      edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
 123    else
 124      edje_object_signal_emit(wd->chk, "elm,state,enabled", "elm");
 125 }
 126
 127 static void
 128 _sizing_eval(Evas_Object *obj)
 129 {
 130    Widget_Data *wd = elm_widget_data_get(obj);
 131    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 132    if (!wd) return;
 133    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 134    edje_object_size_min_restricted_calc(wd->chk, &minw, &minh, minw, minh);
 135    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 136    evas_object_size_hint_min_set(obj, minw, minh);
 137    evas_object_size_hint_max_set(obj, maxw, maxh);
 138 }
 139
 140 static void
 141 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 142 {
 143    Widget_Data *wd = elm_widget_data_get(data);
 144    if (!wd) return;
 145    if (obj != wd->icon) return;
 146    Evas_Coord mw, mh;
 147    evas_object_size_hint_min_get(obj, &mw, &mh);
 148    _sizing_eval(data);
 149 }
 150
 151 static void
 152 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 153 {
 154    Widget_Data *wd = elm_widget_data_get(obj);
 155    Evas_Object *sub = event_info;
 156    if (!wd) return;
 157    if (sub == wd->icon)
 158      {
 159         edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
 160         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 161                                             _changed_size_hints, obj);
 162         wd->icon = NULL;
 163         _sizing_eval(obj);
 164         edje_object_message_signal_process(wd->chk);
 165      }
 166 }
 167
 168 static void
 169 _signal_check_off(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 170 {
 171    Widget_Data *wd = elm_widget_data_get(data);
 172    if (!wd) return;
 173    wd->state = EINA_FALSE;
 174    if (wd->statep) *wd->statep = wd->state;
 175    edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 176    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 177 }
 178
 179 static void
 180 _signal_check_on(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 181 {
 182    Widget_Data *wd = elm_widget_data_get(data);
 183    if (!wd) return;
 184    wd->state = EINA_TRUE;
 185    if (wd->statep) *wd->statep = wd->state;
 186    edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 187    evas_object_smart_callback_call(data, SIG_CHANGED, NULL);
 188 }
 189
 190 static void
 191 _signal_check_toggle(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 192 {
 193    _activate(data);
 194 }
 195
 196 static void
 197 _activate_hook(Evas_Object *obj)
 198 {
 199    _activate(obj);
 200 }
 201
 202 static void
 203 _activate(Evas_Object *obj)
 204 {
 205    Widget_Data *wd = elm_widget_data_get(obj);
 206    if (!wd) return;
 207    wd->state = !wd->state;
 208    if (wd->statep) *wd->statep = wd->state;
 209    if (wd->state)
 210      edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 211    else
 212      edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 213    evas_object_smart_callback_call(obj, SIG_CHANGED, NULL);
 214 }
 215
 216 static void
 217 _elm_check_label_set(Evas_Object *obj, const char *item, const char *label)
 218 {
 219    ELM_CHECK_WIDTYPE(obj, widtype);
 220    Widget_Data *wd = elm_widget_data_get(obj);
 221    if (item && strcmp(item, "default")) return;
 222    if (!wd) return;
 223    eina_stringshare_replace(&wd->label, label);
 224    if (label)
 225      edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
 226    else
 227      edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
 228    edje_object_message_signal_process(wd->chk);
 229    edje_object_part_text_set(wd->chk, "elm.text", label);
 230    _sizing_eval(obj);
 231 }
 232
 233 static const char *
 234 _elm_check_label_get(const Evas_Object *obj, const char *item)
 235 {
 236    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 237    Widget_Data *wd = elm_widget_data_get(obj);
 238    if (item && strcmp(item, "default")) return NULL;
 239    if (!wd) return NULL;
 240    return wd->label;
 241 }
 242
 243 EAPI Evas_Object *
 244 elm_check_add(Evas_Object *parent)
 245 {
 246    Evas_Object *obj;
 247    Evas *e;
 248    Widget_Data *wd;
 249
 250    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 251
 252    ELM_SET_WIDTYPE(widtype, "check");
 253    elm_widget_type_set(obj, "check");
 254    elm_widget_sub_object_add(parent, obj);
 255    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 256    elm_widget_data_set(obj, wd);
 257    elm_widget_del_hook_set(obj, _del_hook);
 258    elm_widget_theme_hook_set(obj, _theme_hook);
 259    elm_widget_disable_hook_set(obj, _disable_hook);
 260    elm_widget_can_focus_set(obj, EINA_TRUE);
 261    elm_widget_activate_hook_set(obj, _activate_hook);
 262    elm_widget_event_hook_set(obj, _event_hook);
 263    elm_widget_text_set_hook_set(obj, _elm_check_label_set);
 264    elm_widget_text_get_hook_set(obj, _elm_check_label_get);
 265
 266    wd->chk = edje_object_add(e);
 267    _elm_theme_object_set(obj, wd->chk, "check", "base", "default");
 268    edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
 269                                    _signal_check_on, obj);
 270    edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
 271                                    _signal_check_off, obj);
 272    edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
 273                                    _signal_check_toggle, obj);
 274    elm_widget_resize_object_set(obj, wd->chk);
 275
 276    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 277
 278    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 279    _sizing_eval(obj);
 280
 281    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 282    // TODO: and save some bytes, making descriptions per-class and not instance!
 283    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 284    return obj;
 285 }
 286
 287 EAPI void
 288 elm_check_label_set(Evas_Object *obj, const char *label)
 289 {
 290    _elm_check_label_set(obj, NULL, label);
 291 }
 292
 293 EAPI const char *
 294 elm_check_label_get(const Evas_Object *obj)
 295 {
 296    return _elm_check_label_get(obj, NULL);
 297 }
 298
 299 EAPI void
 300 elm_check_icon_set(Evas_Object *obj, Evas_Object *icon)
 301 {
 302    ELM_CHECK_WIDTYPE(obj, widtype);
 303    Widget_Data *wd = elm_widget_data_get(obj);
 304    if (!wd) return;
 305    if (wd->icon == icon) return;
 306    if (wd->icon) evas_object_del(wd->icon);
 307    wd->icon = icon;
 308    if (icon)
 309      {
 310         elm_widget_sub_object_add(obj, icon);
 311         evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 312                                        _changed_size_hints, obj);
 313         edje_object_part_swallow(wd->chk, "elm.swallow.content", icon);
 314         edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
 315         edje_object_message_signal_process(wd->chk);
 316      }
 317    _sizing_eval(obj);
 318 }
 319
 320 EAPI Evas_Object *
 321 elm_check_icon_get(const Evas_Object *obj)
 322 {
 323    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 324    Widget_Data *wd = elm_widget_data_get(obj);
 325    if (!wd) return NULL;
 326    return wd->icon;
 327 }
 328
 329 EAPI Evas_Object *
 330 elm_check_icon_unset(Evas_Object *obj)
 331 {
 332    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 333    Widget_Data *wd = elm_widget_data_get(obj);
 334    if (!wd) return NULL;
 335    if (!wd->icon) return NULL;
 336    Evas_Object *icon = wd->icon;
 337    elm_widget_sub_object_del(obj, wd->icon);
 338    edje_object_part_unswallow(wd->chk, wd->icon);
 339    wd->icon = NULL;
 340    return icon;
 341 }
 342
 343 EAPI void
 344 elm_check_state_set(Evas_Object *obj, Eina_Bool state)
 345 {
 346    ELM_CHECK_WIDTYPE(obj, widtype);
 347    Widget_Data *wd = elm_widget_data_get(obj);
 348    if (!wd) return;
 349    if (state != wd->state)
 350      {
 351         wd->state = state;
 352         if (wd->statep) *wd->statep = wd->state;
 353         if (wd->state)
 354           edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 355         else
 356           edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 357      }
 358 }
 359
 360 EAPI Eina_Bool
 361 elm_check_state_get(const Evas_Object *obj)
 362 {
 363    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 364    Widget_Data *wd = elm_widget_data_get(obj);
 365    if (!wd) return EINA_FALSE;
 366    return wd->state;
 367 }
 368
 369 EAPI void
 370 elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
 371 {
 372    ELM_CHECK_WIDTYPE(obj, widtype);
 373    Widget_Data *wd = elm_widget_data_get(obj);
 374    if (!wd) return;
 375    if (statep)
 376      {
 377         wd->statep = statep;
 378         if (*wd->statep != wd->state)
 379           {
 380              wd->state = *wd->statep;
 381              if (wd->state)
 382                edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
 383              else
 384                edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
 385           }
 386      }
 387    else
 388      wd->statep = NULL;
 389 }