src/lib/elm_selectioninfo.c

   1 /*
   2  * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
   3  */
   4 #include <Elementary.h>
   5 #include "elm_priv.h"
   6
   7
   8 /**
   9  * @defgroup Selectioninfo selectioninfo
  10  * @ingroup Elementary
  11  *
  12  * Provide for notifying user about the number of currently selected items
  13  * especially when user is on the selection mode for specific action
  14  * such as Move, Delete, or Share, etc.
  15  *
  16  */
  17
  18 #define _EDJ(x) (Evas_Object *)elm_layout_edje_get(x)
  19
  20 typedef struct _Widget_Data Widget_Data;
  21
  22 struct _Widget_Data
  23 {
  24         Evas_Object* selectioninfo;
  25         Evas_Object* content;
  26         Evas_Object* parent;
  27         Eina_Bool* check_state;
  28         int check_count;
  29         char label_text[128];
  30 };
  31
  32 static const char *widtype = NULL;
  33 static void _del_hook(Evas_Object *obj);
  34 static void _theme_hook(Evas_Object *obj);
  35 static void _sizing_eval(Evas_Object *obj);
  36 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
  37 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
  38 static void _calc(Evas_Object *obj);
  39 static void _content_resize(void *data, Evas *e, Evas_Object *obj, void *event_info);
  40 static void _show(void *data, Evas *e, Evas_Object *obj, void *event_info);
  41 static void _hide(void *data, Evas *e, Evas_Object *obj, void *event_info);
  42 static void _resize(void *data, Evas *e, Evas_Object *obj, void *event_info);
  43
  44 static void
  45 _del_pre_hook(Evas_Object *obj)
  46 {
  47         evas_object_event_callback_del_full(obj, EVAS_CALLBACK_RESIZE, _resize, obj);
  48         evas_object_event_callback_del_full(obj, EVAS_CALLBACK_MOVE, _resize, obj);
  49         evas_object_event_callback_del_full(obj, EVAS_CALLBACK_SHOW, _show, obj);
  50         evas_object_event_callback_del_full(obj, EVAS_CALLBACK_HIDE, _hide, obj);
  51 }
  52
  53 static void
  54 _del_hook(Evas_Object *obj)
  55 {
  56         Widget_Data *wd = elm_widget_data_get(obj);
  57         if (!wd) return;
  58         elm_selectioninfo_content_set(obj, NULL);
  59         elm_selectioninfo_parent_set(obj, NULL);
  60         free(wd);
  61 }
  62
  63 static void
  64 _theme_hook(Evas_Object *obj)
  65 {
  66         Widget_Data *wd = elm_widget_data_get(obj);
  67         if (!wd) return;
  68         _elm_theme_object_set(obj, wd->selectioninfo, "selectioninfo", "base", "default");
  69         edje_object_scale_set(wd->selectioninfo, elm_widget_scale_get(obj) *_elm_config->scale);
  70         _sizing_eval(obj);
  71 }
  72
  73 static void
  74 _sizing_eval(Evas_Object *obj)
  75 {
  76         Widget_Data *wd = elm_widget_data_get(obj);
  77         Evas_Coord x,y,w,h;
  78         if (!wd) return;
  79         if (!wd->parent) return;
  80         evas_object_geometry_get(wd->parent, &x, &y, &w, &h);
  81         evas_object_move(obj, x, y);
  82         evas_object_resize(obj, w, h);
  83 }
  84
  85 static void
  86 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
  87 {
  88         _sizing_eval(data);
  89 }
  90
  91 static void
  92 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
  93 {
  94         Widget_Data *wd = elm_widget_data_get(obj);
  95         if (!wd) return;
  96         if (event_info == wd->content) wd->content = NULL;
  97 }
  98
  99 static void
 100 _resize(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 101 {
 102         _calc(obj);
 103 }
 104
 105 static void
 106 _content_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 107 {
 108         _calc(data);
 109 }
 110
 111 static void
 112 _calc(Evas_Object *obj)
 113 {
 114         Widget_Data *wd = elm_widget_data_get(obj);
 115         Evas_Coord minw = -1, minh = -1;
 116         Evas_Coord x, y, w, h;
 117         if (!wd) return;
 118         evas_object_geometry_get(obj, &x, &y, &w, &h);
 119         edje_object_size_min_calc(wd->selectioninfo, &minw, &minh);
 120
 121         if (wd->content)
 122         {
 123                 evas_object_move(wd->selectioninfo, x, y + h - minh);
 124                 evas_object_resize(wd->selectioninfo, w, minh);
 125         }
 126
 127         _sizing_eval(obj);
 128 }
 129
 130 static void
 131 _show(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 132 {
 133         Widget_Data *wd = elm_widget_data_get(obj);
 134         if (!wd) return;
 135         evas_object_show(wd->selectioninfo);
 136 }
 137
 138 static void
 139 _hide(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 140 {
 141         Widget_Data *wd = elm_widget_data_get(obj);
 142         if (!wd) return;
 143         evas_object_hide(wd->selectioninfo);
 144 }
 145
 146 static void
 147 _parent_del(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 148 {
 149         Widget_Data *wd = elm_widget_data_get(obj);
 150         if (!wd) return;
 151         wd->parent = NULL;
 152         evas_object_hide(obj);
 153 }
 154
 155 static void
 156 _parent_hide(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
 157 {
 158         Widget_Data *wd = elm_widget_data_get(obj);
 159         if (!wd) return;
 160         wd->parent = NULL;
 161         evas_object_hide(obj);
 162 }
 163
 164 /**
 165  * Add a new selectioninfo to the parent
 166  *
 167  * @param parent The parent object
 168  * @return The new object or NULL if it cannot be created
 169  *
 170  * @ingroup Selectioninfo
 171  */
 172 EAPI Evas_Object *
 173 elm_selectioninfo_add(Evas_Object *parent)
 174 {
 175         Evas_Object *obj;
 176         Evas *e;
 177         Widget_Data *wd;
 178
 179         wd = ELM_NEW(Widget_Data);
 180         e = evas_object_evas_get(parent);
 181         obj = elm_widget_add(e);
 182         ELM_SET_WIDTYPE(widtype, "selectioninfo");
 183         elm_widget_type_set(obj, "selectioninfo");
 184         elm_widget_sub_object_add(parent, obj);
 185         elm_widget_data_set(obj, wd);
 186         elm_widget_del_pre_hook_set(obj, _del_pre_hook);
 187         elm_widget_del_hook_set(obj, _del_hook);
 188         elm_widget_theme_hook_set(obj, _theme_hook);
 189
 190         wd->selectioninfo = edje_object_add(e);
 191         _elm_theme_object_set(obj, wd->selectioninfo, "selectioninfo", "base", "default");
 192         _resize(obj, NULL, obj, NULL);
 193
 194         elm_selectioninfo_parent_set(obj, parent);
 195
 196         evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 197         evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE, _resize, obj);
 198         evas_object_event_callback_add(obj, EVAS_CALLBACK_MOVE, _resize, obj);
 199         evas_object_event_callback_add(obj, EVAS_CALLBACK_SHOW, _show, obj);
 200         evas_object_event_callback_add(obj, EVAS_CALLBACK_HIDE, _hide, obj);
 201
 202         _sizing_eval(obj);
 203         return obj;
 204 }
 205
 206 /**
 207  * Set the selectioninfo content
 208  *
 209  * @param obj The selctioninfo object
 210  * @param content The content will be filled in this selectioninfo object
 211  *
 212  * @ingroup Notify
 213  */
 214 EAPI void
 215 elm_selectioninfo_content_set(Evas_Object *obj, Evas_Object *content)
 216 {
 217         ELM_CHECK_WIDTYPE(obj, widtype);
 218         Widget_Data *wd = elm_widget_data_get(obj);
 219         if (!wd) return;
 220         if (wd->content)
 221         {
 222                 evas_object_event_callback_del_full(wd->content, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 223                 evas_object_event_callback_del_full(wd->content, EVAS_CALLBACK_RESIZE, _content_resize, obj);
 224                 evas_object_del(wd->content);
 225                 wd->content = NULL;
 226         }
 227
 228         if (content)
 229         {
 230                 elm_widget_sub_object_add(obj, content);
 231                 wd->content = content;
 232                 evas_object_event_callback_add(content, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 233                 evas_object_event_callback_add(content, EVAS_CALLBACK_RESIZE, _content_resize, obj);
 234                 edje_object_part_swallow(wd->selectioninfo, "elm.swallow.content", content);
 235
 236                 _sizing_eval(obj);
 237         }
 238
 239         _calc(obj);
 240 }
 241
 242 /**
 243  * Set the selectioninfo parent
 244  *
 245  * @param obj The selectioninfo object
 246  * @param parent The new parent
 247  *
 248  * @ingroup Selectioninfo
 249  */
 250 EAPI void
 251 elm_selectioninfo_parent_set(Evas_Object *obj, Evas_Object *parent)
 252 {
 253         ELM_CHECK_WIDTYPE(obj, widtype);
 254         Widget_Data *wd = elm_widget_data_get(obj);
 255         if (!wd) return;
 256         if (wd->parent)
 257         {
 258                 evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 259                 evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_RESIZE, _changed_size_hints, obj);
 260                 evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_MOVE, _changed_size_hints, obj);
 261                 evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_DEL, _parent_del, obj);
 262                 evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_HIDE, _parent_hide, obj);
 263                 wd->parent = NULL;
 264         }
 265
 266         if (parent)
 267         {
 268                 wd->parent = parent;
 269                 evas_object_event_callback_add(parent, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 270                 evas_object_event_callback_add(parent, EVAS_CALLBACK_RESIZE, _changed_size_hints, obj);
 271                 evas_object_event_callback_add(parent, EVAS_CALLBACK_MOVE, _changed_size_hints, obj);
 272                 evas_object_event_callback_add(parent, EVAS_CALLBACK_DEL, _parent_del, obj);
 273                 evas_object_event_callback_add(parent, EVAS_CALLBACK_HIDE, _parent_hide, obj);
 274                 _sizing_eval(obj);
 275         }
 276
 277         _calc(obj);
 278 }
 279
 280 /**
 281  * Set the check state to the selectioninfo
 282  *
 283  * @param obj The selectioninfo object
 284  * @param state The check state
 285  * @param count The check count
 286  *
 287  * @ingroup Selectioninfo
 288  */
 289 EAPI void
 290 elm_selectioninfo_check_state_set(Evas_Object *obj, Eina_Bool *state, int count)
 291 {
 292         ELM_CHECK_WIDTYPE(obj, widtype);
 293         Widget_Data *wd = elm_widget_data_get(obj);
 294         if (!wd) return;
 295         wd->check_state = state;
 296         wd->check_count = count;
 297 }
 298
 299 /**
 300  * Show the selectioninfo
 301  *
 302  * @param obj The selectioninfo object
 303  *
 304  * @ingroup Selectioninfo
 305  */
 306 EAPI void
 307 elm_selectioninfo_show(Evas_Object *obj)
 308 {
 309         ELM_CHECK_WIDTYPE(obj, widtype);
 310         Widget_Data *wd = elm_widget_data_get(obj);
 311         if (!wd) return;
 312
 313         int i;
 314         int state_count = 0;
 315         for (i=0; i<wd->check_count; i++)
 316         {
 317                 if (wd->check_state[i])
 318                         state_count++;
 319         }
 320
 321         if (state_count == 0)
 322         {
 323                 evas_object_hide(wd->selectioninfo);
 324         }
 325         else
 326         {
 327                 if (state_count == 1)
 328                         sprintf(wd->label_text, "%d File Selected", state_count);
 329                 else
 330                         sprintf(wd->label_text, "%d Files Selected", state_count);
 331                 edje_object_part_text_set(_EDJ(wd->content), "elm.text", strdup(wd->label_text));
 332                 evas_object_show(wd->selectioninfo);
 333         }
 334 }
 335