src/lib/elm_widget_flipselector.h

   1 #ifndef ELM_WIDGET_FLIPSELECTOR_H
   2 #define ELM_WIDGET_FLIPSELECTOR_H
   3
   4 #include "elm_widget_layout.h"
   5
   6 /**
   7  * @addtogroup Widget
   8  * @{
   9  *
  10  * @section elm-flipselector-class The Elementary Flipselector Class
  11  *
  12  * Elementary, besides having the @ref Flipselector widget, exposes its
  13  * foundation -- the Elementary Flipselector Class -- in order to create other
  14  * widgets which are a flipselector with some more logic on top.
  15  */
  16
  17 /**
  18  * @def ELM_FLIPSELECTOR_CLASS
  19  *
  20  * Use this macro to cast whichever subclass of
  21  * #Elm_Flipselector_Smart_Class into it, so to access its fields.
  22  *
  23  * @ingroup Widget
  24  */
  25 #define ELM_FLIPSELECTOR_CLASS(x) ((Elm_Flipselector_Smart_Class *)x)
  26
  27 /**
  28  * @def ELM_FLIPSELECTOR_DATA
  29  *
  30  * Use this macro to cast whichever subdata of
  31  * #Elm_Flipselector_Smart_Data into it, so to access its fields.
  32  *
  33  * @ingroup Widget
  34  */
  35 #define ELM_FLIPSELECTOR_DATA(x)  ((Elm_Flipselector_Smart_Data *)x)
  36
  37 /**
  38  * @def ELM_FLIPSELECTOR_SMART_CLASS_VERSION
  39  *
  40  * Current version for Elementary flipselector @b base smart class, a value
  41  * which goes to _Elm_Flipselector_Smart_Class::version.
  42  *
  43  * @ingroup Widget
  44  */
  45 #define ELM_FLIPSELECTOR_SMART_CLASS_VERSION 1
  46
  47 /**
  48  * @def ELM_FLIPSELECTOR_SMART_CLASS_INIT
  49  *
  50  * Initializer for a whole #Elm_Flipselector_Smart_Class structure, with
  51  * @c NULL values on its specific fields.
  52  *
  53  * @param smart_class_init initializer to use for the "base" field
  54  * (#Evas_Smart_Class).
  55  *
  56  * @see EVAS_SMART_CLASS_INIT_NULL
  57  * @see EVAS_SMART_CLASS_INIT_NAME_VERSION
  58  * @see ELM_FLIPSELECTOR_SMART_CLASS_INIT_NULL
  59  * @see ELM_FLIPSELECTOR_SMART_CLASS_INIT_NAME_VERSION
  60  *
  61  * @ingroup Widget
  62  */
  63 #define ELM_FLIPSELECTOR_SMART_CLASS_INIT(smart_class_init) \
  64   {smart_class_init, ELM_FLIPSELECTOR_SMART_CLASS_VERSION}
  65
  66 /**
  67  * @def ELM_FLIPSELECTOR_SMART_CLASS_INIT_NULL
  68  *
  69  * Initializer to zero out a whole #Elm_Flipselector_Smart_Class structure.
  70  *
  71  * @see ELM_FLIPSELECTOR_SMART_CLASS_INIT_NAME_VERSION
  72  * @see ELM_FLIPSELECTOR_SMART_CLASS_INIT
  73  *
  74  * @ingroup Widget
  75  */
  76 #define ELM_FLIPSELECTOR_SMART_CLASS_INIT_NULL \
  77   ELM_FLIPSELECTOR_SMART_CLASS_INIT(EVAS_SMART_CLASS_INIT_NULL)
  78
  79 /**
  80  * @def ELM_FLIPSELECTOR_SMART_CLASS_INIT_NAME_VERSION
  81  *
  82  * Initializer to zero out a whole #Elm_Flipselector_Smart_Class structure and
  83  * set its name and version.
  84  *
  85  * This is similar to #ELM_FLIPSELECTOR_SMART_CLASS_INIT_NULL, but it will
  86  * also set the version field of #Elm_Flipselector_Smart_Class (base field)
  87  * to the latest #ELM_FLIPSELECTOR_SMART_CLASS_VERSION and name it to the
  88  * specific value.
  89  *
  90  * It will keep a reference to the name field as a <c>"const char *"</c>,
  91  * i.e., the name must be available while the structure is
  92  * used (hint: static or global variable!) and must not be modified.
  93  *
  94  * @see ELM_FLIPSELECTOR_SMART_CLASS_INIT_NULL
  95  * @see ELM_FLIPSELECTOR_SMART_CLASS_INIT
  96  *
  97  * @ingroup Widget
  98  */
  99 #define ELM_FLIPSELECTOR_SMART_CLASS_INIT_NAME_VERSION(name) \
 100   ELM_FLIPSELECTOR_SMART_CLASS_INIT                          \
 101     (ELM_LAYOUT_SMART_CLASS_INIT_NAME_VERSION(name))
 102
 103 /**
 104  * Elementary flipselector base smart class. This inherits directly from
 105  * #Elm_Layout_Smart_Class and is meant to build widgets extending the
 106  * behavior of a flipselector.
 107  *
 108  * All of the functions listed on @ref Flipselector namespace will work for
 109  * objects deriving from #Elm_Flipselector_Smart_Class.
 110  */
 111 typedef struct _Elm_Flipselector_Smart_Class
 112 {
 113    Elm_Layout_Smart_Class base;
 114
 115    int                    version;    /**< Version of this smart class definition */
 116 } Elm_Flipselector_Smart_Class;
 117
 118 /**
 119  * Base layout smart data extended with flipselector instance data.
 120  */
 121 typedef struct _Elm_Flipselector_Smart_Data Elm_Flipselector_Smart_Data;
 122 struct _Elm_Flipselector_Smart_Data
 123 {
 124    Elm_Layout_Smart_Data base;
 125
 126    Eina_List            *items;
 127    Eina_List            *current;
 128    Eina_List            *sentinel; /* item containing the largest
 129                                     * label string */
 130    Ecore_Timer          *spin;
 131
 132    unsigned int          max_len;
 133    double                interval, first_interval;
 134
 135    int                   walking;
 136    Eina_Bool             evaluating : 1;
 137    Eina_Bool             deleting : 1;
 138 };
 139
 140 typedef struct _Elm_Flipselector_Item       Elm_Flipselector_Item;
 141 struct _Elm_Flipselector_Item
 142 {
 143    ELM_WIDGET_ITEM;
 144
 145    const char   *label;
 146    Evas_Smart_Cb func;
 147    void         *data;
 148    int           deleted : 1;
 149 };
 150
 151 /**
 152  * @}
 153  */
 154
 155 EAPI extern const char ELM_FLIPSELECTOR_SMART_NAME[];
 156 EAPI const Elm_Flipselector_Smart_Class *elm_flipselector_smart_class_get(void);
 157
 158 #define ELM_FLIPSELECTOR_DATA_GET(o, sd) \
 159   Elm_Flipselector_Smart_Data * sd = evas_object_smart_data_get(o)
 160
 161 #define ELM_FLIPSELECTOR_DATA_GET_OR_RETURN(o, ptr)  \
 162   ELM_FLIPSELECTOR_DATA_GET(o, ptr);                 \
 163   if (!ptr)                                          \
 164     {                                                \
 165        CRITICAL("No widget data for object %p (%s)", \
 166                 o, evas_object_type_get(o));         \
 167        return;                                       \
 168     }
 169
 170 #define ELM_FLIPSELECTOR_DATA_GET_OR_RETURN_VAL(o, ptr, val) \
 171   ELM_FLIPSELECTOR_DATA_GET(o, ptr);                         \
 172   if (!ptr)                                                  \
 173     {                                                        \
 174        CRITICAL("No widget data for object %p (%s)",         \
 175                 o, evas_object_type_get(o));                 \
 176        return val;                                           \
 177     }
 178
 179 #define ELM_FLIPSELECTOR_CHECK(obj)                     \
 180   if (!obj || !elm_widget_type_check                    \
 181         ((obj), ELM_FLIPSELECTOR_SMART_NAME, __func__)) \
 182     return
 183
 184 #define ELM_FLIPSELECTOR_ITEM_CHECK(it)                     \
 185   ELM_WIDGET_ITEM_CHECK_OR_RETURN((Elm_Widget_Item *)it, ); \
 186   ELM_FLIPSELECTOR_CHECK(it->base.widget);
 187
 188 #define ELM_FLIPSELECTOR_ITEM_CHECK_OR_RETURN(it, ...)                 \
 189   ELM_WIDGET_ITEM_CHECK_OR_RETURN((Elm_Widget_Item *)it, __VA_ARGS__); \
 190   ELM_FLIPSELECTOR_CHECK(it->base.widget) __VA_ARGS__;
 191
 192 #endif