src/lib/elm_panel.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 /**
   5  * @defgroup Panel Panel
   6  *
   7  * A panel is a type of animated container that contains subobjects.  It
   8  * can be expanded or contracted.
   9  *
  10  * Orientations are as follows:
  11  * ELM_PANEL_ORIENT_TOP
  12  * ELM_PANEL_ORIENT_BOTTOM
  13  * ELM_PANEL_ORIENT_LEFT
  14  * ELM_PANEL_ORIENT_RIGHT
  15  * NOTE: Only LEFT and RIGHT orientations are implemented.
  16  *
  17  * THIS WIDGET IS UNDER CONSTRUCTION!
  18  */
  19
  20 typedef struct _Widget_Data Widget_Data;
  21 struct _Widget_Data
  22 {
  23    Evas_Object *scr, *bx, *content;
  24    Elm_Panel_Orient orient;
  25    Eina_Bool hidden : 1;
  26 };
  27
  28 static const char *widtype = NULL;
  29 static void _del_hook(Evas_Object *obj);
  30 static void _theme_hook(Evas_Object *obj);
  31 static void _on_focus_hook(void *data, Evas_Object *obj);
  32 static void _sizing_eval(Evas_Object *obj);
  33 static void _resize(void *data, Evas *evas, Evas_Object *obj, void *event);
  34 static void _layout(Evas_Object *o, Evas_Object_Box_Data *priv, void *data);
  35 static void _toggle_panel(void *data, Evas_Object *obj, const char *emission, const char *source);
  36
  37 static void
  38 _del_hook(Evas_Object *obj)
  39 {
  40    Widget_Data *wd = elm_widget_data_get(obj);
  41    if (!wd) return;
  42    free(wd);
  43 }
  44
  45 static void
  46 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
  47 {
  48    Widget_Data *wd = elm_widget_data_get(obj);
  49    if (!wd) return;
  50
  51    if (wd->scr)
  52      {
  53         elm_widget_mirrored_set(wd->bx, rtl);
  54         elm_panel_orient_set(obj, elm_panel_orient_get(obj));
  55      }
  56 }
  57
  58 static void
  59 _theme_hook(Evas_Object *obj)
  60 {
  61    Widget_Data *wd = elm_widget_data_get(obj);
  62    if (!wd) return;
  63    _elm_widget_mirrored_reload(obj);
  64    if (wd->scr)
  65      {
  66         Evas_Object *edj;
  67         const char *str;
  68
  69         _mirrored_set(obj, elm_widget_mirrored_get(obj));
  70         elm_smart_scroller_object_theme_set(obj, wd->scr, "panel", "base",
  71                                             elm_widget_style_get(obj));
  72         //   scale = (elm_widget_scale_get(obj) * _elm_config->scale);
  73         //   edje_object_scale_set(wd->scr, scale);
  74         edj = elm_smart_scroller_edje_object_get(wd->scr);
  75         str = edje_object_data_get(edj, "focus_highlight");
  76         if ((str) && (!strcmp(str, "on")))
  77           elm_widget_highlight_in_theme_set(obj, EINA_TRUE);
  78         else
  79           elm_widget_highlight_in_theme_set(obj, EINA_FALSE);
  80      }
  81
  82    _sizing_eval(obj);
  83 }
  84
  85 static void
  86 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
  87 {
  88    Widget_Data *wd = elm_widget_data_get(obj);
  89    if (!wd) return;
  90    if (elm_widget_focus_get(obj))
  91      evas_object_focus_set(obj, EINA_TRUE);
  92    else
  93      evas_object_focus_set(obj, EINA_FALSE);
  94 }
  95
  96 static Eina_Bool
  97 _elm_panel_focus_next_hook(const Evas_Object *obj, Elm_Focus_Direction dir, Evas_Object **next)
  98 {
  99    Widget_Data *wd = elm_widget_data_get(obj);
 100    Evas_Object *cur;
 101
 102    if ((!wd) || (!wd->content))
 103      return EINA_FALSE;
 104
 105    cur = wd->content;
 106
 107    /* Try Focus cycle in subitem */
 108    if (!wd->hidden)
 109      return elm_widget_focus_next_get(cur, dir, next);
 110
 111    /* Return */
 112    *next = (Evas_Object *)obj;
 113    return !elm_widget_focus_get(obj);
 114 }
 115
 116 static void
 117 _signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
 118 {
 119    Widget_Data *wd = elm_widget_data_get(obj);
 120    if (!wd) return;
 121    edje_object_signal_emit(elm_smart_scroller_edje_object_get(wd->scr),
 122                            emission, source);
 123 }
 124
 125 static void
 126 _signal_callback_add_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 127 {
 128    Widget_Data *wd = elm_widget_data_get(obj);
 129    if (!wd) return;
 130    edje_object_signal_callback_add(elm_smart_scroller_edje_object_get(wd->scr),
 131                                    emission, source, func_cb, data);
 132 }
 133
 134 static void
 135 _signal_callback_del_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 136 {
 137    Widget_Data *wd = elm_widget_data_get(obj);
 138    edje_object_signal_callback_del_full(
 139       elm_smart_scroller_edje_object_get(wd->scr), emission, source,
 140       func_cb, data);
 141 }
 142
 143 static void
 144 _sizing_eval(Evas_Object *obj)
 145 {
 146    Widget_Data *wd = elm_widget_data_get(obj);
 147    Evas_Coord mw = -1, mh = -1;
 148    Evas_Coord vw = 0, vh = 0;
 149    Evas_Coord w, h;
 150    if (!wd) return;
 151    evas_object_smart_calculate(wd->bx);
 152    edje_object_size_min_calc(elm_smart_scroller_edje_object_get(wd->scr),
 153                              &mw, &mh);
 154    evas_object_geometry_get(obj, NULL, NULL, &w, &h);
 155    if (w < mw) w = mw;
 156    if (h < mh) h = mh;
 157    evas_object_resize(wd->scr, w, h);
 158
 159    evas_object_size_hint_min_get(wd->bx, &mw, &mh);
 160    if (w > mw) mw = w;
 161    if (h > mh) mh = h;
 162    evas_object_resize(wd->bx, mw, mh);
 163
 164    elm_smart_scroller_child_viewport_size_get(wd->scr, &vw, &vh);
 165    mw = mw + (w - vw);
 166    mh = mh + (h - vh);
 167    evas_object_size_hint_min_set(obj, mw, mh);
 168    evas_object_size_hint_max_set(obj, -1, -1);
 169 }
 170
 171 static void
 172 _resize(void *data, Evas *evas __UNUSED__, Evas_Object *obj __UNUSED__, void *event __UNUSED__)
 173 {
 174    Widget_Data *wd = elm_widget_data_get(data);
 175    Evas_Coord mw, mh, vw, vh, w, h;
 176    if (!wd) return;
 177    elm_smart_scroller_child_viewport_size_get(wd->scr, &vw, &vh);
 178    evas_object_size_hint_min_get(wd->bx, &mw, &mh);
 179    evas_object_geometry_get(wd->bx, NULL, NULL, &w, &h);
 180    if ((vw >= mw) || (vh >= mh))
 181      {
 182         if ((w != vw) || (h != vh)) evas_object_resize(wd->bx, vw, vh);
 183      }
 184 }
 185
 186 static void
 187 _layout(Evas_Object *o, Evas_Object_Box_Data *priv, void *data)
 188 {
 189    Widget_Data *wd = data;
 190    if (!wd) return;
 191    _els_box_layout(o, priv, EINA_TRUE, EINA_FALSE, EINA_FALSE);
 192 }
 193
 194 static void
 195 _toggle_panel(void *data, Evas_Object *obj, const char *emission __UNUSED__, const char *source __UNUSED__)
 196 {
 197    Widget_Data *wd = elm_widget_data_get(data);
 198    if (!wd) return;
 199    if (wd->hidden)
 200      {
 201         edje_object_signal_emit(elm_smart_scroller_edje_object_get(wd->scr),
 202                                 "elm,action,show", "elm");
 203         wd->hidden = EINA_FALSE;
 204         evas_object_repeat_events_set(obj, EINA_FALSE);
 205      }
 206    else
 207      {
 208         edje_object_signal_emit(elm_smart_scroller_edje_object_get(wd->scr),
 209                                 "elm,action,hide", "elm");
 210         wd->hidden = EINA_TRUE;
 211         evas_object_repeat_events_set(obj, EINA_TRUE);
 212         if (elm_widget_focus_get(wd->content))
 213           {
 214              elm_widget_focused_object_clear(obj);
 215              elm_widget_focus_steal(obj);
 216           }
 217      }
 218 }
 219
 220 static Eina_Bool
 221 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
 222 {
 223    if ((src != obj) || (type != EVAS_CALLBACK_KEY_DOWN)) return EINA_FALSE;
 224
 225    Evas_Event_Key_Down *ev = event_info;
 226    Widget_Data *wd = elm_widget_data_get(obj);
 227    if (!wd) return EINA_FALSE;
 228
 229    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
 230
 231    if ((strcmp(ev->keyname, "Return")) &&
 232        (strcmp(ev->keyname, "KP_Enter")) &&
 233        (strcmp(ev->keyname, "space")))
 234      return EINA_FALSE;
 235
 236    _toggle_panel(obj, NULL, "elm,action,panel,toggle", "*");
 237
 238    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 239    return EINA_TRUE;
 240 }
 241
 242 /**
 243  * Adds a panel object
 244  *
 245  * @param parent The parent object
 246  *
 247  * @return The panel object, or NULL on failure
 248  *
 249  * @ingroup Panel
 250  */
 251 EAPI Evas_Object *
 252 elm_panel_add(Evas_Object *parent)
 253 {
 254    Evas_Object *obj;
 255    Evas *e;
 256    Widget_Data *wd;
 257
 258    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 259
 260    ELM_SET_WIDTYPE(widtype, "panel");
 261    elm_widget_type_set(obj, "panel");
 262    elm_widget_sub_object_add(parent, obj);
 263    elm_widget_data_set(obj, wd);
 264    elm_widget_del_hook_set(obj, _del_hook);
 265    elm_widget_theme_hook_set(obj, _theme_hook);
 266    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 267    elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
 268    elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
 269    elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
 270    elm_widget_focus_next_hook_set(obj, _elm_panel_focus_next_hook);
 271    elm_widget_can_focus_set(obj, EINA_TRUE);
 272    elm_widget_event_hook_set(obj, _event_hook);
 273
 274    wd->scr = elm_smart_scroller_add(e);
 275    elm_smart_scroller_widget_set(wd->scr, obj);
 276    _theme_hook(obj);
 277    elm_smart_scroller_bounce_allow_set(wd->scr, EINA_FALSE, EINA_FALSE);
 278    elm_widget_resize_object_set(obj, wd->scr);
 279    elm_smart_scroller_policy_set(wd->scr, ELM_SMART_SCROLLER_POLICY_OFF,
 280                                  ELM_SMART_SCROLLER_POLICY_OFF);
 281
 282    wd->hidden = EINA_FALSE;
 283    wd->orient = ELM_PANEL_ORIENT_LEFT;
 284
 285    wd->bx = evas_object_box_add(e);
 286    evas_object_size_hint_align_set(wd->bx, 0.5, 0.5);
 287    evas_object_box_layout_set(wd->bx, _layout, wd, NULL);
 288    elm_widget_sub_object_add(obj, wd->bx);
 289    elm_smart_scroller_child_set(wd->scr, wd->bx);
 290    evas_object_show(wd->bx);
 291
 292    edje_object_signal_callback_add(elm_smart_scroller_edje_object_get(wd->scr),
 293                                    "elm,action,panel,toggle", "*",
 294                                    _toggle_panel, obj);
 295
 296    evas_object_event_callback_add(wd->scr, EVAS_CALLBACK_RESIZE, _resize, obj);
 297
 298    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 299    _sizing_eval(obj);
 300    return obj;
 301 }
 302
 303 /**
 304  * Sets the orientation of the panel
 305  *
 306  * @param parent The parent object
 307  * @param orient The panel orientation.  Can be one of the following:
 308  * ELM_PANEL_ORIENT_TOP
 309  * ELM_PANEL_ORIENT_BOTTOM
 310  * ELM_PANEL_ORIENT_LEFT
 311  * ELM_PANEL_ORIENT_RIGHT
 312  *
 313  * NOTE: Only LEFT and RIGHT orientations are implemented.
 314  *
 315  * @ingroup Panel
 316  */
 317 EAPI void
 318 elm_panel_orient_set(Evas_Object *obj, Elm_Panel_Orient orient)
 319 {
 320    ELM_CHECK_WIDTYPE(obj, widtype);
 321    Widget_Data *wd = elm_widget_data_get(obj);
 322    if (!wd) return;
 323    wd->orient = orient;
 324    switch (orient)
 325      {
 326       case ELM_PANEL_ORIENT_TOP:
 327          elm_smart_scroller_object_theme_set(obj, wd->scr, "panel", "base", "top");
 328          break;
 329       case ELM_PANEL_ORIENT_BOTTOM:
 330          elm_smart_scroller_object_theme_set(obj, wd->scr, "panel", "base", "bottom");
 331          break;
 332       case ELM_PANEL_ORIENT_LEFT:
 333          if (!elm_widget_mirrored_get(obj))
 334            elm_smart_scroller_object_theme_set(obj, wd->scr, "panel", "base", "left");
 335          else
 336            elm_smart_scroller_object_theme_set(obj, wd->scr, "panel", "base", "right");
 337          break;
 338       case ELM_PANEL_ORIENT_RIGHT:
 339          if (!elm_widget_mirrored_get(obj))
 340            elm_smart_scroller_object_theme_set(obj, wd->scr, "panel", "base", "right");
 341          else
 342            elm_smart_scroller_object_theme_set(obj, wd->scr, "panel", "base", "left");
 343          break;
 344      }
 345
 346    _sizing_eval(obj);
 347 }
 348
 349 /**
 350  * Get the orientation of the panel.
 351  *
 352  * @param obj The panel object
 353  * @return The Elm_Panel_Orient, or ELM_PANEL_ORIENT_LEFT on failure.
 354  *
 355  * @ingroup Panel
 356  */
 357 EAPI Elm_Panel_Orient
 358 elm_panel_orient_get(const Evas_Object *obj)
 359 {
 360    ELM_CHECK_WIDTYPE(obj, widtype) ELM_PANEL_ORIENT_LEFT;
 361    Widget_Data *wd = elm_widget_data_get(obj);
 362    if (!wd) return ELM_PANEL_ORIENT_LEFT;
 363    return wd->orient;
 364 }
 365
 366 /**
 367  * Set the content of the panel.
 368  *
 369  * Once the content object is set, a previously set one will be deleted.
 370  * If you want to keep that old content object, use the
 371  * elm_panel_content_unset() function.
 372  *
 373  * @param obj The panel object
 374  * @param content The panel content
 375  *
 376  * @ingroup Panel
 377  */
 378 EAPI void
 379 elm_panel_content_set(Evas_Object *obj, Evas_Object *content)
 380 {
 381    ELM_CHECK_WIDTYPE(obj, widtype);
 382    Widget_Data *wd = elm_widget_data_get(obj);
 383    if (!wd) return;
 384    if (wd->content == content) return;
 385    if (wd->content)
 386      evas_object_box_remove_all(wd->bx, EINA_TRUE);
 387    wd->content = content;
 388    if (content)
 389      {
 390         evas_object_box_append(wd->bx, wd->content);
 391         evas_object_show(wd->content);
 392      }
 393    _sizing_eval(obj);
 394 }
 395
 396 /**
 397  * Get the content of the panel.
 398  *
 399  * Return the content object which is set for this widget.
 400  *
 401  * @param obj The panel object
 402  * @return The content that is being used
 403  *
 404  * @ingroup Panel
 405  */
 406 EAPI Evas_Object *
 407 elm_panel_content_get(const Evas_Object *obj)
 408 {
 409    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 410    Widget_Data *wd = elm_widget_data_get(obj);
 411    if (!wd) return NULL;
 412    return wd->content;
 413 }
 414
 415 /**
 416  * Unset the content of the panel.
 417  *
 418  * Unparent and return the content object which was set for this widget.
 419  *
 420  * @param obj The panel object
 421  * @return The content that was being used
 422  *
 423  * @ingroup Panel
 424  */
 425 EAPI Evas_Object *
 426 elm_panel_content_unset(Evas_Object *obj)
 427 {
 428    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 429    Widget_Data *wd = elm_widget_data_get(obj);
 430    Evas_Object *content;
 431    if (!wd) return NULL;
 432    if (!wd->content) return NULL;
 433    content = wd->content;
 434    evas_object_box_remove_all(wd->bx, EINA_FALSE);
 435    wd->content = NULL;
 436    return content;
 437 }
 438
 439 /**
 440  * Set the state of the panel.
 441  *
 442  * @param obj The panel object
 443  * @param hidden If true, the panel will run the edje animation to contract
 444  *
 445  * @ingroup Panel
 446  */
 447 EAPI void
 448 elm_panel_hidden_set(Evas_Object *obj, Eina_Bool hidden)
 449 {
 450    ELM_CHECK_WIDTYPE(obj, widtype);
 451    Widget_Data *wd = elm_widget_data_get(obj);
 452    if (!wd) return;
 453    if (wd->hidden == hidden) return;
 454    _toggle_panel(obj, NULL, "elm,action,panel,toggle", "*");
 455 }
 456
 457 /**
 458  * Get the state of the panel.
 459  *
 460  * @param obj The panel object
 461  * @param hidden If true, the panel is in the "hide" state
 462  *
 463  * @ingroup Panel
 464  */
 465 EAPI Eina_Bool
 466 elm_panel_hidden_get(const Evas_Object *obj)
 467 {
 468    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 469    Widget_Data *wd = elm_widget_data_get(obj);
 470    if (!wd) return EINA_FALSE;
 471    return wd->hidden;
 472 }
 473
 474 /**
 475  * Toggle the state of the panel from code
 476  *
 477  * @param obj The panel object
 478  *
 479  * @ingroup Panel
 480  */
 481 EAPI void
 482 elm_panel_toggle(Evas_Object *obj)
 483 {
 484    ELM_CHECK_WIDTYPE(obj, widtype);
 485    Widget_Data *wd = elm_widget_data_get(obj);
 486    if (!wd) return;
 487    _toggle_panel(obj, NULL, "elm,action,panel,toggle", "*");
 488 }