src/lib/elm_button.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 *btn, *icon;
   9    const char *label;
  10    Eina_Bool autorepeat;
  11    Eina_Bool repeating;
  12    double ar_threshold;
  13    double ar_interval;
  14    Ecore_Timer *timer;
  15 };
  16
  17 static const char *widtype = NULL;
  18 static void _del_hook(Evas_Object *obj);
  19 static void _theme_hook(Evas_Object *obj);
  20 static void _disable_hook(Evas_Object *obj);
  21 static void _sizing_eval(Evas_Object *obj);
  22 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
  23 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
  24 static void _signal_clicked(void *data, Evas_Object *obj, const char *emission, const char *source);
  25 static void _signal_pressed(void *data, Evas_Object *obj, const char *emission, const char *source);
  26 static void _signal_unpressed(void *data, Evas_Object *obj, const char *emission, const char *source);
  27 static void _on_focus_hook(void *data, Evas_Object *obj);
  28 static void _activate(Evas_Object *obj);
  29 static void _activate_hook(Evas_Object *obj);
  30 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  31                              Evas_Callback_Type type, void *event_info);
  32
  33 static const char SIG_CLICKED[] = "clicked";
  34 static const char SIG_REPEATED[] = "repeated";
  35 static const char SIG_PRESSED[] = "pressed";
  36 static const char SIG_UNPRESSED[] = "unpressed";
  37 static const Evas_Smart_Cb_Description _signals[] = {
  38        {SIG_CLICKED, ""},
  39        {SIG_REPEATED, ""},
  40        {SIG_PRESSED, ""},
  41        {SIG_UNPRESSED, ""},
  42        {NULL, NULL}
  43 };
  44
  45 static Eina_Bool
  46 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  47 {
  48    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
  49    Evas_Event_Key_Down *ev = event_info;
  50    Widget_Data *wd = elm_widget_data_get(obj);
  51    if (!wd) return EINA_FALSE;
  52    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  53    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  54    if ((strcmp(ev->keyname, "Return")) &&
  55        (strcmp(ev->keyname, "KP_Enter")) &&
  56        (strcmp(ev->keyname, "space")))
  57      return EINA_FALSE;
  58    _activate(obj);
  59    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  60    edje_object_signal_emit(wd->btn, "elm,anim,activate", "elm");
  61    return EINA_TRUE;
  62 }
  63
  64 static void
  65 _del_hook(Evas_Object *obj)
  66 {
  67    Widget_Data *wd = elm_widget_data_get(obj);
  68    if (!wd) return;
  69    if (wd->label) eina_stringshare_del(wd->label);
  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->btn, "elm,action,focus", "elm");
  81         evas_object_focus_set(wd->btn, EINA_TRUE);
  82      }
  83    else
  84      {
  85         edje_object_signal_emit(wd->btn, "elm,action,unfocus", "elm");
  86         evas_object_focus_set(wd->btn, 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->btn, rtl);
  96 }
  97
  98 static void
  99 _theme_hook(Evas_Object *obj)
 100 {
 101    Widget_Data *wd = elm_widget_data_get(obj);
 102    const char *str;
 103    if (!wd) return;
 104    _elm_widget_mirrored_reload(obj);
 105    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 106    _elm_theme_object_set(obj, wd->btn, "button", "base", elm_widget_style_get(obj));
 107    if (wd->icon)
 108      edje_object_part_swallow(wd->btn, "elm.swallow.content", wd->icon);
 109    if (wd->label)
 110      edje_object_signal_emit(wd->btn, "elm,state,text,visible", "elm");
 111    else
 112      edje_object_signal_emit(wd->btn, "elm,state,text,hidden", "elm");
 113    if (wd->icon)
 114      edje_object_signal_emit(wd->btn, "elm,state,icon,visible", "elm");
 115    else
 116      edje_object_signal_emit(wd->btn, "elm,state,icon,hidden", "elm");
 117    edje_object_part_text_set(wd->btn, "elm.text", wd->label);
 118    if (elm_object_disabled_get(obj))
 119      edje_object_signal_emit(wd->btn, "elm,state,disabled", "elm");
 120    edje_object_message_signal_process(wd->btn);
 121    edje_object_scale_set(wd->btn, elm_widget_scale_get(obj) * _elm_config->scale);
 122    str = edje_object_data_get(wd->btn, "focus_highlight");
 123    if ((str) && (!strcmp(str, "on")))
 124      elm_widget_highlight_in_theme_set(obj, EINA_TRUE);
 125    else
 126      elm_widget_highlight_in_theme_set(obj, EINA_FALSE);
 127    _sizing_eval(obj);
 128 }
 129
 130 static void
 131 _disable_hook(Evas_Object *obj)
 132 {
 133    Widget_Data *wd = elm_widget_data_get(obj);
 134    if (!wd) return;
 135    if (elm_widget_disabled_get(obj))
 136      edje_object_signal_emit(wd->btn, "elm,state,disabled", "elm");
 137    else
 138      edje_object_signal_emit(wd->btn, "elm,state,enabled", "elm");
 139 }
 140
 141 static void
 142 _signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
 143 {
 144    Widget_Data *wd = elm_widget_data_get(obj);
 145    if (!wd) return;
 146    edje_object_signal_emit(wd->btn, emission, source);
 147 }
 148
 149 static void
 150 _signal_callback_add_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 151 {
 152    Widget_Data *wd = elm_widget_data_get(obj);
 153    if (!wd) return;
 154    edje_object_signal_callback_add(wd->btn, emission, source, func_cb, data);
 155 }
 156
 157 static void
 158 _signal_callback_del_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 159 {
 160    Widget_Data *wd = elm_widget_data_get(obj);
 161    edje_object_signal_callback_del_full(wd->btn, emission, source, func_cb,
 162                                         data);
 163 }
 164
 165 static void
 166 _sizing_eval(Evas_Object *obj)
 167 {
 168    Widget_Data *wd = elm_widget_data_get(obj);
 169    Evas_Coord minw = -1, minh = -1;
 170
 171    if (!wd) return;
 172    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 173    edje_object_size_min_restricted_calc(wd->btn, &minw, &minh, minw, minh);
 174    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 175    evas_object_size_hint_min_set(obj, minw, minh);
 176 }
 177
 178 static void
 179 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 180 {
 181    Widget_Data *wd = elm_widget_data_get(data);
 182    if (!wd) return;
 183    if (obj != wd->icon) return;
 184    _sizing_eval(data);
 185 }
 186
 187 static void
 188 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
 189 {
 190    Widget_Data *wd = elm_widget_data_get(obj);
 191    Evas_Object *sub = event_info;
 192    if (!wd) return;
 193    if (sub == wd->icon)
 194      {
 195         edje_object_signal_emit(wd->btn, "elm,state,icon,hidden", "elm");
 196         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 197                                             _changed_size_hints, obj);
 198         wd->icon = NULL;
 199         edje_object_message_signal_process(wd->btn);
 200         _sizing_eval(obj);
 201      }
 202 }
 203
 204 static void
 205 _activate(Evas_Object *obj)
 206 {
 207    Widget_Data *wd = elm_widget_data_get(obj);
 208    if (!wd) return;
 209    if (wd->timer)
 210      {
 211         ecore_timer_del(wd->timer);
 212         wd->timer = NULL;
 213      }
 214    wd->repeating = EINA_FALSE;
 215    evas_object_smart_callback_call(obj, SIG_CLICKED, NULL);
 216 }
 217
 218 static void
 219 _activate_hook(Evas_Object *obj)
 220 {
 221    _activate(obj);
 222 }
 223
 224 static void
 225 _signal_clicked(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 226 {
 227    _activate(data);
 228 }
 229
 230 static Eina_Bool
 231 _autorepeat_send(void *data)
 232 {
 233    Widget_Data *wd = elm_widget_data_get(data);
 234    if (!wd) return ECORE_CALLBACK_CANCEL;
 235
 236    evas_object_smart_callback_call(data, SIG_REPEATED, NULL);
 237    if (!wd->repeating)
 238      {
 239         wd->timer = NULL;
 240         return ECORE_CALLBACK_CANCEL;
 241      }
 242
 243    return ECORE_CALLBACK_RENEW;
 244 }
 245
 246 static Eina_Bool
 247 _autorepeat_initial_send(void *data)
 248 {
 249    Widget_Data *wd = elm_widget_data_get(data);
 250    if (!wd) return ECORE_CALLBACK_CANCEL;
 251
 252    if (wd->timer) ecore_timer_del(wd->timer);
 253    wd->repeating = EINA_TRUE;
 254    _autorepeat_send(data);
 255    wd->timer = ecore_timer_add(wd->ar_interval, _autorepeat_send, data);
 256
 257    return ECORE_CALLBACK_CANCEL;
 258 }
 259
 260 static void
 261 _signal_pressed(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 262 {
 263    Widget_Data *wd = elm_widget_data_get(data);
 264    if (!wd) return;
 265
 266    if ((wd->autorepeat) && (!wd->repeating))
 267      {
 268         if (wd->ar_threshold <= 0.0)
 269           _autorepeat_initial_send(data); /* call immediately */
 270         else
 271           wd->timer = ecore_timer_add(wd->ar_threshold, _autorepeat_initial_send, data);
 272      }
 273
 274    evas_object_smart_callback_call(data, SIG_PRESSED, NULL);
 275 }
 276
 277 static void
 278 _signal_unpressed(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
 279 {
 280    Widget_Data *wd = elm_widget_data_get(data);
 281    if (!wd) return;
 282
 283    if (wd->timer)
 284      {
 285         ecore_timer_del(wd->timer);
 286         wd->timer = NULL;
 287      }
 288    wd->repeating = EINA_FALSE;
 289    evas_object_smart_callback_call(data, SIG_UNPRESSED, NULL);
 290 }
 291
 292 static void
 293 _elm_button_label_set(Evas_Object *obj, const char *item, const char *label)
 294 {
 295    ELM_CHECK_WIDTYPE(obj, widtype);
 296    Widget_Data *wd = elm_widget_data_get(obj);
 297    if (item && strcmp(item, "default")) return;
 298    if (!wd) return;
 299    eina_stringshare_replace(&wd->label, label);
 300    if (label)
 301      edje_object_signal_emit(wd->btn, "elm,state,text,visible", "elm");
 302    else
 303      edje_object_signal_emit(wd->btn, "elm,state,text,hidden", "elm");
 304    edje_object_message_signal_process(wd->btn);
 305    edje_object_part_text_set(wd->btn, "elm.text", label);
 306    _sizing_eval(obj);
 307 }
 308
 309 static const char *
 310 _elm_button_label_get(const Evas_Object *obj, const char *item)
 311 {
 312    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 313    Widget_Data *wd = elm_widget_data_get(obj);
 314    if (item && strcmp(item, "default")) return NULL;
 315    if (!wd) return NULL;
 316    return wd->label;
 317 }
 318
 319 static char *
 320 _access_info_cb(const void *data __UNUSED__, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 321 {
 322    char *txt = (char *)_elm_button_label_get(obj, NULL);
 323    if (txt) return strdup(txt);
 324    return txt;
 325 }
 326
 327 static char *
 328 _access_state_cb(const void *data __UNUSED__, Evas_Object *obj, Elm_Widget_Item *item __UNUSED__)
 329 {
 330    if (elm_widget_disabled_get(obj))
 331       return strdup(E_("State: Disabled"));
 332    return NULL;
 333 }
 334
 335 EAPI Evas_Object *
 336 elm_button_add(Evas_Object *parent)
 337 {
 338    Evas_Object *obj;
 339    Evas *e;
 340    Widget_Data *wd;
 341
 342    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 343
 344    ELM_SET_WIDTYPE(widtype, "button");
 345    elm_widget_type_set(obj, "button");
 346    elm_widget_sub_object_add(parent, obj);
 347    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 348    elm_widget_data_set(obj, wd);
 349    elm_widget_del_hook_set(obj, _del_hook);
 350    elm_widget_theme_hook_set(obj, _theme_hook);
 351    elm_widget_disable_hook_set(obj, _disable_hook);
 352    elm_widget_can_focus_set(obj, EINA_TRUE);
 353    elm_widget_activate_hook_set(obj, _activate_hook);
 354    elm_widget_event_hook_set(obj, _event_hook);
 355    elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
 356    elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
 357    elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
 358    elm_widget_text_set_hook_set(obj, _elm_button_label_set);
 359    elm_widget_text_get_hook_set(obj, _elm_button_label_get);
 360
 361    wd->btn = edje_object_add(e);
 362    _elm_theme_object_set(obj, wd->btn, "button", "base", "default");
 363    edje_object_signal_callback_add(wd->btn, "elm,action,click", "",
 364                                    _signal_clicked, obj);
 365    edje_object_signal_callback_add(wd->btn, "elm,action,press", "",
 366                                    _signal_pressed, obj);
 367    edje_object_signal_callback_add(wd->btn, "elm,action,unpress", "",
 368                                    _signal_unpressed, obj);
 369    elm_widget_resize_object_set(obj, wd->btn);
 370
 371    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 372
 373    _theme_hook(obj);
 374
 375    // TODO: convert Elementary to subclassing of Evas_Smart_Class
 376    // TODO: and save some bytes, making descriptions per-class and not instance!
 377    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 378
 379    _elm_access_object_register(obj, wd->btn);
 380    _elm_access_text_set(_elm_access_object_get(obj),
 381                         ELM_ACCESS_TYPE, E_("Button"));
 382    _elm_access_callback_set(_elm_access_object_get(obj),
 383                             ELM_ACCESS_INFO, _access_info_cb, obj);
 384    _elm_access_callback_set(_elm_access_object_get(obj),
 385                             ELM_ACCESS_STATE, _access_state_cb, obj);
 386    return obj;
 387 }
 388
 389 EAPI void
 390 elm_button_label_set(Evas_Object *obj, const char *label)
 391 {
 392    _elm_button_label_set(obj, NULL, label);
 393 }
 394
 395 EAPI const char *
 396 elm_button_label_get(const Evas_Object *obj)
 397 {
 398    return _elm_button_label_get(obj, NULL);
 399 }
 400
 401 EAPI void
 402 elm_button_icon_set(Evas_Object *obj, Evas_Object *icon)
 403 {
 404    ELM_CHECK_WIDTYPE(obj, widtype);
 405    Widget_Data *wd = elm_widget_data_get(obj);
 406    if (!wd) return;
 407    if (wd->icon == icon) return;
 408    if (wd->icon) evas_object_del(wd->icon);
 409    wd->icon = icon;
 410    if (icon)
 411      {
 412         elm_widget_sub_object_add(obj, icon);
 413         evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 414                                        _changed_size_hints, obj);
 415         edje_object_part_swallow(wd->btn, "elm.swallow.content", icon);
 416         edje_object_signal_emit(wd->btn, "elm,state,icon,visible", "elm");
 417         edje_object_message_signal_process(wd->btn);
 418      }
 419    _sizing_eval(obj);
 420 }
 421
 422 EAPI Evas_Object *
 423 elm_button_icon_get(const Evas_Object *obj)
 424 {
 425    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 426    Widget_Data *wd = elm_widget_data_get(obj);
 427    if (!wd) return NULL;
 428    return wd->icon;
 429 }
 430
 431 EAPI Evas_Object *
 432 elm_button_icon_unset(Evas_Object *obj)
 433 {
 434    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 435    Widget_Data *wd = elm_widget_data_get(obj);
 436    if (!wd) return NULL;
 437    if (!wd->icon) return NULL;
 438    Evas_Object *icon = wd->icon;
 439    elm_widget_sub_object_del(obj, wd->icon);
 440    edje_object_part_unswallow(wd->btn, wd->icon);
 441    wd->icon = NULL;
 442    return icon;
 443 }
 444
 445 EAPI void
 446 elm_button_autorepeat_set(Evas_Object *obj, Eina_Bool on)
 447 {
 448    ELM_CHECK_WIDTYPE(obj, widtype);
 449    Widget_Data *wd = elm_widget_data_get(obj);
 450    if (!wd) return;
 451    if (wd->timer)
 452      {
 453         ecore_timer_del(wd->timer);
 454         wd->timer = NULL;
 455      }
 456    wd->autorepeat = on;
 457    wd->repeating = EINA_FALSE;
 458 }
 459
 460 EAPI Eina_Bool
 461 elm_button_autorepeat_get(const Evas_Object *obj)
 462 {
 463    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 464    Widget_Data *wd = elm_widget_data_get(obj);
 465    if (!wd) return EINA_FALSE;
 466    return wd->autorepeat;
 467 }
 468
 469 EAPI void
 470 elm_button_autorepeat_initial_timeout_set(Evas_Object *obj, double t)
 471 {
 472    ELM_CHECK_WIDTYPE(obj, widtype);
 473    Widget_Data *wd = elm_widget_data_get(obj);
 474    if (!wd) return;
 475    if (wd->ar_threshold == t) return;
 476    if (wd->timer)
 477      {
 478         ecore_timer_del(wd->timer);
 479         wd->timer = NULL;
 480      }
 481    wd->ar_threshold = t;
 482 }
 483
 484 EAPI double
 485 elm_button_autorepeat_initial_timeout_get(const Evas_Object *obj)
 486 {
 487    ELM_CHECK_WIDTYPE(obj, widtype) 0.0;
 488    Widget_Data *wd = elm_widget_data_get(obj);
 489    if (!wd) return 0.0;
 490    return wd->ar_threshold;
 491 }
 492
 493 EAPI void
 494 elm_button_autorepeat_gap_timeout_set(Evas_Object *obj, double t)
 495 {
 496    ELM_CHECK_WIDTYPE(obj, widtype);
 497    Widget_Data *wd = elm_widget_data_get(obj);
 498    if (!wd) return;
 499    if (wd->ar_interval == t) return;
 500
 501    wd->ar_interval = t;
 502    if ((wd->repeating) && (wd->timer)) ecore_timer_interval_set(wd->timer, t);
 503 }
 504
 505 EAPI double
 506 elm_button_autorepeat_gap_timeout_get(const Evas_Object *obj)
 507 {
 508    ELM_CHECK_WIDTYPE(obj, widtype) 0.0;
 509    Widget_Data *wd = elm_widget_data_get(obj);
 510    if (!wd) return 0.0;
 511    return wd->ar_interval;
 512 }