src/lib/elm_dialoguegroup.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3 #include <Ecore.h>
   4
   5 /**
   6  * @addtogroup DialogueGroup DialogueGroup
   7  *
   8  * Using dialoguegroup, you can make a dialogue group.
   9  */
  10
  11 typedef struct _Dialogue_Item Dialogue_Item;
  12 struct _Dialogue_Item
  13 {
  14         Evas_Object *parent;
  15         Evas_Object *bg_layout;
  16         Evas_Object *content_layout;
  17 };
  18
  19
  20 typedef struct _Widget_Data Widget_Data;
  21 struct _Widget_Data
  22 {
  23         Evas_Object *parent;
  24         Evas *e;
  25         Evas_Object *box;
  26         unsigned int num;
  27
  28         Eina_List *items;
  29 };
  30
  31 static void _del_hook(Evas_Object *obj);
  32 static void _theme_hook(Evas_Object *obj);
  33 static void _sizing_eval(Evas_Object *obj);
  34 static void _disable_hook(Evas_Object *obj);
  35
  36 static void _remove_all(Evas_Object *obj);
  37 static void _change_item_bg(Dialogue_Item *item, const char *style);
  38 static Dialogue_Item* _create_item(Evas_Object *obj, Evas_Object *subobj, const char *style);
  39
  40
  41 static void
  42 _del_hook(Evas_Object *obj)
  43 {
  44         Widget_Data *wd = elm_widget_data_get(obj);
  45         Dialogue_Item *item;
  46
  47         if (!wd) return;
  48
  49         _remove_all(obj);
  50
  51         if (wd->box){
  52                 evas_object_del(wd->box);
  53                 wd->box = NULL;
  54         }
  55
  56         free(wd);
  57 }
  58
  59
  60 static void
  61 _theme_hook(Evas_Object *obj)
  62 {
  63         Widget_Data *wd = elm_widget_data_get(obj);
  64         Eina_List *l;
  65         Dialogue_Item *item;
  66
  67         if (!wd)
  68                 return;
  69         EINA_LIST_FOREACH(wd->items, l, item)
  70                 _change_item_bg( item, elm_widget_style_get(item->bg_layout) );
  71
  72         _sizing_eval(obj);
  73 }
  74
  75 static void
  76 _disable_hook(Evas_Object *obj)
  77 {
  78
  79 }
  80
  81 static void
  82 _sizing_eval(Evas_Object *obj)
  83 {
  84         Widget_Data *wd = elm_widget_data_get(obj);
  85         Eina_List *l;
  86         Dialogue_Item *item;
  87         Evas_Coord minw, minh, maxw, maxh;
  88
  89         if (!wd) return;
  90         evas_object_size_hint_min_get(wd->box, &minw, &minh);
  91         evas_object_size_hint_max_get(wd->box, &maxw, &maxh);
  92         evas_object_size_hint_min_set(obj, minw, minh);
  93         evas_object_size_hint_max_set(obj, maxw, maxh);
  94 }
  95
  96 static void _remove_all(Evas_Object *obj)
  97 {
  98         Widget_Data *wd = elm_widget_data_get(obj);
  99         Dialogue_Item *item;
 100
 101         if (!wd) return;
 102
 103         wd->num = 0;
 104
 105         if (wd->items) {
 106                 EINA_LIST_FREE(wd->items, item) {
 107                         if (item->content_layout){
 108                                 evas_object_del(item->content_layout);
 109                                 item->content_layout = NULL;
 110                         }
 111                         if (item->bg_layout){
 112                                 evas_object_del(item->bg_layout);
 113                                 item->bg_layout = NULL;
 114                         }
 115                         free(item);
 116                 }
 117         }
 118 }
 119
 120 static void _change_item_bg(Dialogue_Item *item, const char *style)
 121 {
 122         if ( ! item ) return;
 123
 124         elm_layout_theme_set(item->bg_layout, "dialoguegroup", "bg", style);
 125         elm_object_style_set(item->bg_layout, style);
 126         elm_layout_content_set(item->bg_layout, "swallow", item->content_layout);
 127 }
 128
 129 static Dialogue_Item* _create_item(Evas_Object *obj, Evas_Object *subobj, const char *style)
 130 {
 131         Widget_Data *wd = elm_widget_data_get(obj);
 132         Dialogue_Item *item;
 133
 134         if ( ! wd ) return NULL;
 135
 136         item = ELM_NEW(Dialogue_Item);
 137         item->parent = obj;
 138         item->content_layout = subobj;
 139
 140         item->bg_layout = elm_layout_add(wd->parent);
 141         elm_layout_theme_set(item->bg_layout, "dialoguegroup", "bg", style );
 142         elm_object_style_set(item->bg_layout, style);
 143         evas_object_size_hint_weight_set(item->bg_layout, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 144         evas_object_size_hint_align_set(item->bg_layout, EVAS_HINT_FILL, 0.0);
 145         evas_object_show(item->bg_layout);
 146
 147         elm_layout_content_set(item->bg_layout, "swallow", item->content_layout);
 148
 149         return item;
 150 }
 151
 152 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info)
 153 {
 154         _sizing_eval(data);
 155 }
 156
 157 /**
 158  * Add a new dialoguegroup to the parent.
 159  *
 160  * @param parent The parent object
 161  * @return The new object or NULL if it cannot be created
 162  *
 163  * @ingroup DialogueGroup
 164  */
 165 EAPI Evas_Object *elm_dialoguegroup_add(Evas_Object *parent)
 166 {
 167         Evas_Object *obj = NULL;
 168         Widget_Data *wd = NULL;
 169
 170         wd = ELM_NEW(Widget_Data);
 171         wd->e = evas_object_evas_get(parent);
 172         if (wd->e == NULL) return NULL;
 173         obj = elm_widget_add(wd->e);
 174         elm_widget_type_set(obj, "dialoguegroup");
 175         elm_widget_sub_object_add(parent, obj);
 176         elm_widget_data_set(obj, wd);
 177         elm_widget_del_hook_set(obj, _del_hook);
 178         elm_widget_theme_hook_set(obj, _theme_hook);
 179
 180         wd->parent = parent;
 181         wd->num = 0;
 182
 183         wd->box = elm_box_add(parent);
 184         evas_object_event_callback_add(wd->box, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 185         evas_object_show(wd->box);
 186         elm_widget_resize_object_set(obj, wd->box);
 187
 188         _sizing_eval(obj);
 189         return obj;
 190 }
 191
 192 /**
 193  * Append an item to the dialogue group.
 194  *
 195  * @param obj dialoguegroup object
 196  * @param subobj item
 197  *
 198  * @ingroup DialogueGroup
 199  */
 200 EAPI void
 201 elm_dialoguegroup_append(Evas_Object *obj, Evas_Object *subobj)
 202 {
 203         Widget_Data *wd = elm_widget_data_get(obj);
 204         Dialogue_Item *item;
 205
 206         if ( ! wd || ! subobj ) return;
 207
 208         if ( !wd->items ) {
 209                 item = _create_item(obj, subobj, "default");
 210                 elm_box_pack_end(wd->box, item->bg_layout);
 211                 wd->items = eina_list_append(wd->items, item);
 212         }
 213
 214         else {
 215                 if ( wd->num == 1 ) {
 216                         item = eina_list_data_get(wd->items);
 217                         _change_item_bg(item, "top");
 218                 }
 219                 else {
 220                         item = eina_list_data_get( eina_list_last(wd->items) );
 221                         _change_item_bg(item, "middle");
 222                 }
 223                 item = _create_item(obj, subobj, "bottom");
 224                 elm_box_pack_end(wd->box, item->bg_layout);
 225                 wd->items = eina_list_append(wd->items, item);
 226         }
 227
 228         wd->num++;
 229         _sizing_eval(obj);
 230 }
 231
 232
 233 /**
 234  * Prepend an item to the dialogue group.
 235  *
 236  * @param obj dialoguegroup object
 237  * @param subobj item
 238  *
 239  * @ingroup DialogueGroup
 240  */
 241 EAPI void
 242 elm_dialoguegroup_prepend(Evas_Object *obj, Evas_Object *subobj)
 243 {
 244         Widget_Data *wd = elm_widget_data_get(obj);
 245         Dialogue_Item *item;
 246
 247         if ( ! wd || ! subobj ) return;
 248
 249         if ( !wd->items ) {
 250                 item = _create_item(obj, subobj, "default");
 251                 elm_box_pack_start(wd->box, item->bg_layout);
 252                 wd->items = eina_list_prepend(wd->items, item);
 253         }
 254
 255         else {
 256                 if ( wd->num == 1 ) {
 257                         item = eina_list_data_get(wd->items);
 258                         _change_item_bg(item, "bottom");
 259                 }
 260                 else {
 261                         item = eina_list_data_get( wd->items );
 262                         _change_item_bg(item, "middle");
 263                 }
 264                 item = _create_item(obj, subobj, "top");
 265                 elm_box_pack_start(wd->box, item->bg_layout);
 266                 wd->items = eina_list_prepend(wd->items, item);
 267         }
 268
 269         wd->num++;
 270         _sizing_eval(obj);
 271 }
 272
 273 /**
 274  * Insert an item to the dialogue group just after the specified item.
 275  *
 276  * @param obj dialoguegroup object
 277  * @param subobj item
 278  * @param after specified item existing in the dialogue group
 279  *
 280  * @ingroup DialogueGroup
 281  */
 282 EAPI void
 283 elm_dialoguegroup_insert_after(Evas_Object *obj, Evas_Object *subobj, Evas_Object *after)
 284 {
 285         Widget_Data *wd = elm_widget_data_get(obj);
 286         Dialogue_Item *after_item, *item;
 287         Eina_List *l;
 288         const char *style;
 289
 290         if ( !wd || !subobj || !after || !wd->items)
 291                 return ;
 292
 293         EINA_LIST_FOREACH(wd->items, l, after_item) {
 294                 if( after == after_item->content_layout ) {
 295                         style = elm_object_style_get(after_item->bg_layout);
 296
 297                         if( !strcmp(style, "default") ) {
 298                                 _change_item_bg(after_item, "top");
 299                                 item = _create_item(obj, subobj, "bottom");
 300                         }
 301
 302                         else if( !strcmp(style, "top") || !strcmp(style, "middle") )
 303                                 item = _create_item(obj, subobj, "middle");
 304
 305                         else if( !strcmp(style, "bottom") ) {
 306                                 _change_item_bg(after_item, "middle");
 307                                 item = _create_item(obj, subobj, "bottom");
 308                         }
 309
 310                         elm_box_pack_after(wd->box, item->bg_layout, after_item->bg_layout);
 311                         wd->items = eina_list_append_relative(wd->items, item, after_item);
 312                 }
 313         }
 314
 315         wd->num++;
 316
 317         _sizing_eval(obj);
 318 }
 319
 320 /**
 321  * Insert an item to the dialogue group just before the specified item.
 322  *
 323  * @param obj dialoguegroup object
 324  * @param subobj item
 325  * @param before specified item existing in the dialogue group
 326  *
 327  * @ingroup DialogueGroup
 328  */
 329 EAPI void
 330 elm_dialoguegroup_insert_before(Evas_Object *obj, Evas_Object *subobj, Evas_Object *before)
 331 {
 332         Widget_Data *wd = elm_widget_data_get(obj);
 333         Dialogue_Item *before_item, *item;
 334         Eina_List *l;
 335         const char *style;
 336
 337         if ( !wd || !subobj || !before || !wd->items)
 338                 return ;
 339
 340         EINA_LIST_FOREACH(wd->items, l, before_item) {
 341                 if( before == before_item->content_layout ) {
 342                         style = elm_object_style_get(before_item->bg_layout);
 343
 344                         if( !strcmp(style, "default") ) {
 345                                 _change_item_bg(before_item, "bottom");
 346                                 item = _create_item(obj, subobj, "top");
 347                         }
 348
 349                         else if( !strcmp(style, "top") ) {
 350                                 _change_item_bg(before_item, "middle");
 351                                 item = _create_item(obj, subobj, "top");
 352                         }
 353
 354                         else if( !strcmp(style, "middle") || !strcmp(style, "bottom") )
 355                                 item = _create_item(obj, subobj, "middle");
 356
 357                         elm_box_pack_before(wd->box, item->bg_layout, before_item->bg_layout);
 358                         wd->items = eina_list_prepend_relative(wd->items, item, before_item);
 359                 }
 360         }
 361
 362         wd->num++;
 363
 364         _sizing_eval(obj);
 365 }
 366
 367 /**
 368  * Remove an item from the dialogue group.
 369  *
 370  * @param obj dialoguegroup object
 371  * @param subobj item
 372  *
 373  * @ingroup DialogueGroup
 374  */
 375 EAPI void
 376 elm_dialoguegroup_remove(Evas_Object *obj, Evas_Object *subobj)
 377 {
 378         Widget_Data *wd = elm_widget_data_get(obj);
 379         Dialogue_Item *item;
 380         Eina_List *l;
 381
 382         if ( !wd || !subobj || !wd->items)
 383                 return ;
 384
 385         EINA_LIST_FOREACH(wd->items, l, item) {
 386                 if (subobj == item->content_layout) {
 387                         if (item->content_layout){
 388                                 evas_object_del(item->content_layout);
 389                                 item->content_layout = NULL;
 390                         }
 391                         if (item->bg_layout){
 392                                 evas_object_del(item->bg_layout);
 393                                 item->bg_layout = NULL;
 394                         }
 395                         elm_box_unpack(wd->box, item->bg_layout);
 396                         wd->items = eina_list_remove(wd->items, item);
 397                 }
 398         }
 399
 400         wd->num--;
 401
 402         if ( wd->num == 0 )
 403                 return;
 404
 405         if ( wd->num == 1 ) {
 406                 item = eina_list_data_get(wd->items);
 407                 _change_item_bg(item, "default");
 408         }
 409
 410         else {
 411                 item = eina_list_data_get(wd->items);
 412                 _change_item_bg(item, "top");
 413                 item = eina_list_data_get( eina_list_last(wd->items) );
 414                 _change_item_bg(item, "bottom");
 415         }
 416
 417         _sizing_eval(obj);
 418 }
 419
 420 /**
 421  * Remove all items from the dialogue group.
 422  *
 423  * @param obj dialoguegroup object
 424  *
 425  * @ingroup DialogueGroup
 426  */
 427 EAPI void
 428 elm_dialoguegroup_remove_all(Evas_Object *obj)
 429 {
 430         _remove_all(obj);
 431         _sizing_eval(obj);
 432 }