src/lib/elm_panes.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 /**
   5  * @defgroup Panes panes
   6  *
   7  */
   8
   9 typedef struct _Widget_Data Widget_Data;
  10
  11 struct _Widget_Data
  12 {
  13    Evas_Object *panes;
  14
  15    struct
  16      {
  17         Evas_Object *left;
  18         Evas_Object *right;
  19      } contents;
  20
  21    struct
  22      {
  23         int x_diff;
  24         int y_diff;
  25         Eina_Bool move;
  26      } move;
  27
  28    Eina_Bool clicked_double;
  29    Eina_Bool horizontal;
  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
  38 static void
  39 _del_hook(Evas_Object *obj)
  40 {
  41    Widget_Data *wd = elm_widget_data_get(obj);
  42    if (!wd) return;
  43    free(wd);
  44 }
  45
  46 static void
  47 _theme_hook(Evas_Object *obj)
  48 {
  49    Widget_Data *wd = elm_widget_data_get(obj);
  50    const char *style = elm_widget_style_get(obj);
  51    double size;
  52
  53    if (!wd) return;
  54    size = elm_panes_content_left_size_get(obj);
  55
  56    if (wd->horizontal)
  57      _elm_theme_object_set(obj, wd->panes, "panes", "horizontal", style);
  58    else
  59      _elm_theme_object_set(obj, wd->panes, "panes", "vertical", style);
  60
  61    if (wd->contents.left)
  62      edje_object_part_swallow(wd->panes, "elm.swallow.left", wd->contents.left);
  63    if (wd->contents.right)
  64      edje_object_part_swallow(wd->panes, "elm.swallow.right", wd->contents.right);
  65
  66    edje_object_scale_set(wd->panes, elm_widget_scale_get(obj) *
  67                          _elm_config->scale);
  68    _sizing_eval(obj);
  69    elm_panes_content_left_size_set(obj, size);
  70 }
  71
  72 static Eina_Bool
  73 _elm_panes_focus_next_hook(const Evas_Object *obj, Elm_Focus_Direction dir, Evas_Object **next)
  74 {
  75    Widget_Data *wd = elm_widget_data_get(obj);
  76
  77    if (!wd)
  78      return EINA_FALSE;
  79
  80    double w, h;
  81    edje_object_part_drag_value_get(wd->panes, "elm.bar", &w, &h);
  82    if (((wd->horizontal) && ( h == 0.0 )) || ((!wd->horizontal) && ( w == 0.0 )))
  83      return elm_widget_focus_next_get(wd->contents.right, dir, next);
  84
  85    Evas_Object *chain[2];
  86
  87    /* Direction */
  88    if (dir == ELM_FOCUS_PREVIOUS)
  89      {
  90         chain[0] = wd->contents.right;
  91         chain[1] = wd->contents.left;
  92      }
  93    else if (dir == ELM_FOCUS_NEXT)
  94      {
  95         chain[0] = wd->contents.left;
  96         chain[1] = wd->contents.right;
  97      }
  98    else
  99      return EINA_FALSE;
 100
 101    unsigned char i = elm_widget_focus_get(chain[1]);
 102
 103    if (elm_widget_focus_next_get(chain[i], dir, next))
 104      return EINA_TRUE;
 105
 106    i = !i;
 107
 108    Evas_Object *to_focus;
 109    if (elm_widget_focus_next_get(chain[i], dir, &to_focus))
 110      {
 111         *next = to_focus;
 112         return !!i;
 113      }
 114
 115    return EINA_FALSE;
 116 }
 117
 118 static void
 119 _sizing_eval(Evas_Object *obj)
 120 {
 121    Widget_Data *wd = elm_widget_data_get(obj);
 122    if (!wd) return;
 123 }
 124
 125 static void
 126 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 127 {
 128    _sizing_eval(data);
 129 }
 130
 131 static void
 132 _sub_del(void *data __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 133 {
 134    Widget_Data *wd = elm_widget_data_get(obj);
 135    Evas_Object *sub = event_info;
 136
 137    if (!wd) return;
 138    if (sub == wd->contents.left)
 139      {
 140         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 141                                             _changed_size_hints, obj);
 142         wd->contents.left = NULL;
 143         _sizing_eval(obj);
 144      }
 145    else if (sub == wd->contents.right)
 146      {
 147         evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 148                                             _changed_size_hints, obj);
 149         wd->contents.right= NULL;
 150         _sizing_eval(obj);
 151      }
 152 }
 153
 154 static void
 155 _clicked(void *data, Evas_Object *obj __UNUSED__ , const char *emission __UNUSED__, const char *source __UNUSED__)
 156 {
 157    evas_object_smart_callback_call(data, "clicked", NULL);
 158 }
 159
 160 static void
 161 _clicked_double(void *data, Evas_Object *obj __UNUSED__ , const char *emission __UNUSED__, const char *source __UNUSED__)
 162 {
 163    Widget_Data *wd = elm_widget_data_get(data);
 164
 165    wd->clicked_double = EINA_TRUE;
 166 }
 167
 168 static void
 169 _press(void *data, Evas_Object *obj __UNUSED__ , const char *emission __UNUSED__, const char *source __UNUSED__)
 170 {
 171    evas_object_smart_callback_call(data, "press", NULL);
 172 }
 173
 174 static void
 175 _unpress(void *data, Evas_Object *obj __UNUSED__ , const char *emission __UNUSED__, const char *source __UNUSED__)
 176 {
 177    Widget_Data *wd = elm_widget_data_get(data);
 178    evas_object_smart_callback_call(data, "unpress", NULL);
 179
 180    if (wd->clicked_double)
 181      {
 182         evas_object_smart_callback_call(data, "clicked,double", NULL);
 183         wd->clicked_double = EINA_FALSE;
 184      }
 185 }
 186
 187 /**
 188  * Add a new panes to the parent
 189  *
 190  * @param parent The parent object
 191  * @return The new object or NULL if it cannot be created
 192  *
 193  * @ingroup Panel
 194  */
 195 EAPI Evas_Object *
 196 elm_panes_add(Evas_Object *parent)
 197 {
 198    Evas_Object *obj;
 199    Evas *e;
 200    Widget_Data *wd;
 201
 202    EINA_SAFETY_ON_NULL_RETURN_VAL(parent, NULL);
 203
 204    wd = ELM_NEW(Widget_Data);
 205    e = evas_object_evas_get(parent);
 206    if (!e) return NULL;
 207    obj = elm_widget_add(e);
 208    ELM_SET_WIDTYPE(widtype, "panes");
 209    elm_widget_type_set(obj, "panes");
 210    elm_widget_sub_object_add(parent, obj);
 211    elm_widget_data_set(obj, wd);
 212    elm_widget_del_hook_set(obj, _del_hook);
 213    elm_widget_theme_hook_set(obj, _theme_hook);
 214    elm_widget_focus_next_hook_set(obj, _elm_panes_focus_next_hook);
 215    elm_widget_can_focus_set(obj, EINA_FALSE);
 216
 217    wd->panes = edje_object_add(e);
 218    _elm_theme_object_set(obj, wd->panes, "panes", "vertical", "default");
 219    elm_widget_resize_object_set(obj, wd->panes);
 220    evas_object_show(wd->panes);
 221
 222    elm_panes_content_left_size_set(obj, 0.5);
 223
 224    edje_object_signal_callback_add(wd->panes, "elm,action,click", "",
 225                                    _clicked, obj);
 226    edje_object_signal_callback_add(wd->panes, "elm,action,click,double", "",
 227                                    _clicked_double, obj);
 228    edje_object_signal_callback_add(wd->panes, "elm,action,press", "",
 229                                    _press, obj);
 230    edje_object_signal_callback_add(wd->panes, "elm,action,unpress", "",
 231                                    _unpress, obj);
 232
 233    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 234    evas_object_event_callback_add(obj, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 235                                   _changed_size_hints, obj);
 236
 237    _sizing_eval(obj);
 238    return obj;
 239 }
 240
 241
 242 /**
 243  * Set the left content of the panes widget.
 244  *
 245  * Once the content object is set, a previously set one will be deleted.
 246  * If you want to keep that old content object, use the
 247  * elm_panes_content_left_unset() function.
 248  *
 249  * @param obj The panes object
 250  * @param content The new left content object
 251  *
 252  * @ingroup Panes
 253  */
 254 EAPI void
 255 elm_panes_content_left_set(Evas_Object *obj, Evas_Object *content)
 256 {
 257    ELM_CHECK_WIDTYPE(obj, widtype);
 258    Widget_Data *wd = elm_widget_data_get(obj);
 259    if (wd->contents.left)
 260      {
 261         evas_object_del(wd->contents.left);
 262         wd->contents.left = NULL;
 263      }
 264    if (content)
 265      {
 266         wd->contents.left = content;
 267         elm_widget_sub_object_add(obj, content);
 268         edje_object_part_swallow(wd->panes, "elm.swallow.left", content);
 269      }
 270 }
 271
 272 /**
 273  * Set the right content of the panes widget.
 274  *
 275  * Once the content object is set, a previously set one will be deleted.
 276  * If you want to keep that old content object, use the
 277  * elm_panes_content_right_unset() function.
 278  *
 279  * @param obj The panes object
 280  * @param content The new right content object
 281  *
 282  * @ingroup Panes
 283  */
 284 EAPI void
 285 elm_panes_content_right_set(Evas_Object *obj, Evas_Object *content)
 286 {
 287    ELM_CHECK_WIDTYPE(obj, widtype);
 288    Widget_Data *wd = elm_widget_data_get(obj);
 289    if (wd->contents.right)
 290      {
 291         evas_object_del(wd->contents.right);
 292         wd->contents.right = NULL;
 293      }
 294    if (content)
 295      {
 296         wd->contents.right = content;
 297         elm_widget_sub_object_add(obj, content);
 298         edje_object_part_swallow(wd->panes, "elm.swallow.right", content);
 299      }
 300 }
 301
 302 /**
 303  * Get the left content used for the panes
 304  *
 305  * Return the left content object which is set for this widget.
 306  *
 307  * @param obj The panes object
 308  * @return The left content object that is being used
 309  *
 310  * @ingroup Panes
 311  */
 312 EAPI Evas_Object *
 313 elm_panes_content_left_get(const Evas_Object *obj)
 314 {
 315    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 316    Widget_Data *wd = elm_widget_data_get(obj);
 317    return wd->contents.left;
 318 }
 319
 320 /**
 321  * Get the right content used for the panes
 322  *
 323  * Return the right content object which is set for this widget.
 324  *
 325  * @param obj The panes object
 326  * @return The right content object that is being used
 327  *
 328  * @ingroup Panes
 329  */
 330 EAPI Evas_Object *
 331 elm_panes_content_right_get(const Evas_Object *obj)
 332 {
 333    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 334    Widget_Data *wd = elm_widget_data_get(obj);
 335    return wd->contents.right;
 336 }
 337
 338 /**
 339  * Unset the left content used for the panes
 340  *
 341  * Unparent and return the left content object which was set for this widget.
 342  *
 343  * @param obj The panes object
 344  * @return The left content object that was being used
 345  *
 346  * @ingroup Panes
 347  */
 348 EAPI Evas_Object *
 349 elm_panes_content_left_unset(Evas_Object *obj)
 350 {
 351    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 352    Widget_Data *wd = elm_widget_data_get(obj);
 353    if (!wd) return NULL;
 354    if (!wd->contents.left) return NULL;
 355    Evas_Object *content = wd->contents.left;
 356    elm_widget_sub_object_del(obj, content);
 357    edje_object_part_unswallow(wd->panes, content);
 358    wd->contents.left = NULL;
 359    return content;
 360 }
 361
 362 /**
 363  * Unset the right content used for the panes
 364  *
 365  * Unparent and return the right content object which was set for this widget.
 366  *
 367  * @param obj The panes object
 368  * @return The right content object that was being used
 369  *
 370  * @ingroup Panes
 371  */
 372 EAPI Evas_Object *
 373 elm_panes_content_right_unset(Evas_Object *obj)
 374 {
 375    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 376    Widget_Data *wd = elm_widget_data_get(obj);
 377    if (!wd) return NULL;
 378    if (!wd->contents.right) return NULL;
 379    Evas_Object *content = wd->contents.right;
 380    elm_widget_sub_object_del(obj, content);
 381    edje_object_part_unswallow(wd->panes, content);
 382    wd->contents.right = NULL;
 383    return content;
 384 }
 385
 386 EAPI double
 387 elm_panes_content_left_size_get(const Evas_Object *obj)
 388 {
 389    ELM_CHECK_WIDTYPE(obj, widtype) 0.0;
 390    Widget_Data *wd = elm_widget_data_get(obj);
 391    double w, h;
 392
 393    edje_object_part_drag_value_get(wd->panes, "elm.bar", &w, &h);
 394    if (wd->horizontal) return h;
 395    else return w;
 396 }
 397
 398 EAPI void
 399 elm_panes_content_left_size_set(Evas_Object *obj, double size)
 400 {
 401    ELM_CHECK_WIDTYPE(obj, widtype);
 402    Widget_Data *wd = elm_widget_data_get(obj);
 403
 404    if (size < 0.0) size = 0.0;
 405    else if (size > 1.0) size = 1.0;
 406    if (wd->horizontal)
 407      edje_object_part_drag_value_set(wd->panes, "elm.bar", 0.0, size);
 408    else
 409      edje_object_part_drag_value_set(wd->panes, "elm.bar", size, 0.0);
 410 }
 411
 412 EAPI void
 413 elm_panes_horizontal_set(Evas_Object *obj, Eina_Bool horizontal)
 414 {
 415    ELM_CHECK_WIDTYPE(obj, widtype);
 416    Widget_Data *wd = elm_widget_data_get(obj);
 417
 418    wd->horizontal = horizontal;
 419    _theme_hook(obj);
 420    elm_panes_content_left_size_set(obj, 0.5);
 421 }
 422
 423 EAPI Eina_Bool
 424 elm_panes_horizontal_get(const Evas_Object *obj)
 425 {
 426    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 427    Widget_Data *wd = elm_widget_data_get(obj);
 428    return wd->horizontal;
 429 }