373 lines
13 KiB
C
373 lines
13 KiB
C
/**
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* Set a label of an object
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*
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* @param obj The Elementary object
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* @param part The text part name to set (NULL for the default label)
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* @param label The new text of the label
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*
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* @note Elementary objects may have many labels (e.g. Action Slider)
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*
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* @ingroup General
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*/
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EAPI void elm_object_part_text_set(Evas_Object *obj, const char *part, const char *label);
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#define elm_object_text_set(obj, label) elm_object_part_text_set((obj), NULL, (label))
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/**
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* Get a label of an object
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*
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* @param obj The Elementary object
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* @param part The text part name to get (NULL for the default label)
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* @return text of the label or NULL for any error
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*
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* @note Elementary objects may have many labels (e.g. Action Slider)
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*
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* @ingroup General
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*/
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EAPI const char *elm_object_part_text_get(const Evas_Object *obj, const char *part);
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#define elm_object_text_get(obj) elm_object_part_text_get((obj), NULL)
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/**
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* Set a content of an object
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*
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* @param obj The Elementary object
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* @param part The content part name to set (NULL for the default content)
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* @param content The new content of the object
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*
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* @note Elementary objects may have many contents
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*
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* @ingroup General
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*/
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EAPI void elm_object_part_content_set(Evas_Object *obj, const char *part, Evas_Object *content);
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#define elm_object_content_set(obj, content) elm_object_part_content_set((obj), NULL, (content))
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/**
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* Get a content of an object
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*
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* @param obj The Elementary object
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* @param part The content part name to get (NULL for the default content)
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* @return content of the object or NULL for any error
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*
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* @note Elementary objects may have many contents
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*
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* @ingroup General
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*/
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EAPI Evas_Object *elm_object_part_content_get(const Evas_Object *obj, const char *part);
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#define elm_object_content_get(obj) elm_object_part_content_get((obj), NULL)
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/**
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* Unset a content of an object
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*
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* @param obj The Elementary object
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* @param part The content part name to unset (NULL for the default content)
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*
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* @note Elementary objects may have many contents
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*
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* @ingroup General
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*/
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EAPI Evas_Object *elm_object_part_content_unset(Evas_Object *obj, const char *part);
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#define elm_object_content_unset(obj) elm_object_part_content_unset((obj), NULL)
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/**
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* Set the text to read out when in accessibility mode
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*
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* @param obj The object which is to be described
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* @param txt The text that describes the widget to people with poor or no vision
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*
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* @ingroup General
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*/
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EAPI void elm_object_access_info_set(Evas_Object *obj, const char *txt);
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/**
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* Get a named object from the children
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*
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* @param obj The parent object whose children to look at
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* @param name The name of the child to find
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* @param recurse Set to the maximum number of levels to recurse (0 == none, 1 is only look at 1 level of children etc.)
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* @return The found object of that name, or NULL if none is found
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*
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* This function searches the children (or recursively children of
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* children and so on) of the given @p obj object looking for a child with
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* the name of @p name. If the child is found the object is returned, or
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* NULL is returned. You can set the name of an object with
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* evas_object_name_set(). If the name is not unique within the child
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* objects (or the tree is @p recurse is greater than 0) then it is
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* undefined as to which child of that name is returned, so ensure the name
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* is unique amongst children. If recurse is set to -1 it will recurse
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* without limit.
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*
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* @ingroup General
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*/
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EAPI Evas_Object *elm_object_name_find(const Evas_Object *obj, const char *name, int recurse);
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/**
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* @defgroup Styles Styles
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*
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* Widgets can have different styles of look. These generic API's
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* set styles of widgets, if they support them (and if the theme(s)
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* do).
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*
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* @ref general_functions_example_page "This" example contemplates
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* some of these functions.
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*/
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/**
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* Set the style to used by a given widget
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*
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* @param obj The Elementary widget to style
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* @param style The name of the style to use on it
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* @return @c EINA_TRUE on success, @c EINA_FALSE otherwise
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*
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* This sets the style (by name) that will define the appearance of a
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* widget. Styles vary from widget to widget and may also be defined
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* by other themes by means of extensions and overlays.
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*
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* @see elm_theme_extension_add()
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* @see elm_theme_extension_del()
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* @see elm_theme_overlay_add()
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* @see elm_theme_overlay_del()
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*
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* @ingroup Styles
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*/
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EAPI Eina_Bool elm_object_style_set(Evas_Object *obj, const char *style);
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/**
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* Get the style used by the widget
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*
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* This gets the style being used for that widget. Note that the string
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* pointer is only valid as long as the object is valid and the style doesn't
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* change.
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*
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* @param obj The Elementary widget to query for its style
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* @return The style name used
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*
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* @see elm_object_style_set()
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*
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* @ingroup Styles
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*/
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EAPI const char *elm_object_style_get(const Evas_Object *obj);
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/**
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* Set the disabled state of an Elementary object.
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*
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* @param obj The Elementary object to operate on
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* @param disabled The state to put in in: @c EINA_TRUE for
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* disabled, @c EINA_FALSE for enabled
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*
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* Elementary objects can be @b disabled, in which state they won't
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* receive input and, in general, will be themed differently from
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* their normal state, usually greyed out. Useful for contexts
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* where you don't want your users to interact with some of the
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* parts of you interface.
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*
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* This sets the state for the widget, either disabling it or
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* enabling it back.
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*
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* @ingroup Styles
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*/
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EAPI void elm_object_disabled_set(Evas_Object *obj, Eina_Bool disabled);
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/**
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* Get the disabled state of an Elementary object.
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*
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* @param obj The Elementary object to operate on
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* @return @c EINA_TRUE, if the widget is disabled, @c EINA_FALSE
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* if it's enabled (or on errors)
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*
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* This gets the state of the widget, which might be enabled or disabled.
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*
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* @ingroup Styles
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*/
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EAPI Eina_Bool elm_object_disabled_get(const Evas_Object *obj);
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/**
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* @defgroup WidgetNavigation Widget Tree Navigation
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*
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* These functions provide checks for if a Evas_Object is an Elementary widget,
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* the possibility of getting a widget's parent, top level parent and getting a
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* string representation of a widget's type.
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*/
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/**
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* Check if the given Evas Object is an Elementary widget.
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*
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* @param obj the object to query.
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* @return @c EINA_TRUE if it is an elementary widget variant,
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* @c EINA_FALSE otherwise
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* @ingroup WidgetNavigation
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*/
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EAPI Eina_Bool elm_object_widget_check(const Evas_Object *obj);
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/**
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* Get the first parent of the given object that is an Elementary
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* widget.
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*
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* @param obj the Elementary object to query parent from.
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* @return the parent object that is an Elementary widget, or @c
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* NULL, if it was not found.
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*
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* Use this to query for an object's parent widget.
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*
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* @note Most of Elementary users wouldn't be mixing non-Elementary
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* smart objects in the objects tree of an application, as this is
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* an advanced usage of Elementary with Evas. So, except for the
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* application's window, which is the root of that tree, all other
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* objects would have valid Elementary widget parents.
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*
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* @ingroup WidgetNavigation
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*/
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EAPI Evas_Object *elm_object_parent_widget_get(const Evas_Object *obj);
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/**
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* Get the top level parent of an Elementary widget.
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*
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* @param obj The object to query.
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* @return The top level Elementary widget, or @c NULL if parent cannot be
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* found.
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* @ingroup WidgetNavigation
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*/
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EAPI Evas_Object *elm_object_top_widget_get(const Evas_Object *obj);
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/**
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* Get the string that represents this Elementary widget.
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*
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* @note Elementary is weird and exposes itself as a single
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* Evas_Object_Smart_Class of type "elm_widget", so
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* evas_object_type_get() always return that, making debug and
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* language bindings hard. This function tries to mitigate this
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* problem, but the solution is to change Elementary to use
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* proper inheritance.
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*
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* @param obj the object to query.
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* @return Elementary widget name, or @c NULL if not a valid widget.
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* @ingroup WidgetNavigation
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*/
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EAPI const char *elm_object_widget_type_get(const Evas_Object *obj);
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/**
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* Send a signal to the widget edje object.
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*
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* This function sends a signal to the edje object of the obj. An
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* edje program can respond to a signal by specifying matching
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* 'signal' and 'source' fields.
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*
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* @param obj The object
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* @param emission The signal's name.
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* @param source The signal's source.
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* @ingroup General
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*/
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EAPI void elm_object_signal_emit(Evas_Object *obj, const char *emission, const char *source);
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/**
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* Add a callback for a signal emitted by widget edje object.
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*
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* This function connects a callback function to a signal emitted by the
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* edje object of the obj.
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* Globs can occur in either the emission or source name.
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*
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* @param obj The object
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* @param emission The signal's name.
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* @param source The signal's source.
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* @param func The callback function to be executed when the signal is
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* emitted.
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* @param data A pointer to data to pass in to the callback function.
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* @ingroup General
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*/
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EAPI void elm_object_signal_callback_add(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func, void *data);
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/**
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* Remove a signal-triggered callback from a widget edje object.
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*
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* @param obj The object handle
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* @param emission The signal's name.
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* @param source The signal's source.
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* @param func The callback function to be executed when the signal is
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* emitted.
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* @return The data pointer of the signal callback or @c NULL, on
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* errors.
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*
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* This function removes the @b last callback, previously attached to
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* a signal emitted by an undelying Edje object of @a obj, whose
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* parameters @a emission, @a source and @c func match exactly with
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* those passed to a previous call to
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* elm_object_signal_callback_add(). The data pointer that was passed
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* to this call will be returned.
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*
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* @ingroup General
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*/
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EAPI void *elm_object_signal_callback_del(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func);
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/**
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* Add a callback for input events (key up, key down, mouse wheel)
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* on a given Elementary widget
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*
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* @param obj The widget to add an event callback on
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* @param func The callback function to be executed when the event
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* happens
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* @param data Data to pass in to @p func
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*
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* Every widget in an Elementary interface set to receive focus,
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* with elm_object_focus_allow_set(), will propagate @b all of its
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* key up, key down and mouse wheel input events up to its parent
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* object, and so on. All of the focusable ones in this chain which
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* had an event callback set, with this call, will be able to treat
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* those events. There are two ways of making the propagation of
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* these event upwards in the tree of widgets to @b cease:
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* - Just return @c EINA_TRUE on @p func. @c EINA_FALSE will mean
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* the event was @b not processed, so the propagation will go on.
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* - The @c event_info pointer passed to @p func will contain the
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* event's structure and, if you OR its @c event_flags inner
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* value to @c EVAS_EVENT_FLAG_ON_HOLD, you're telling Elementary
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* one has already handled it, thus killing the event's
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* propagation, too.
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*
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* @note Your event callback will be issued on those events taking
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* place only if no other child widget of @p obj has consumed the
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* event already.
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*
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* @note Not to be confused with @c
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* evas_object_event_callback_add(), which will add event callbacks
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* per type on general Evas objects (no event propagation
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* infrastructure taken in account).
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*
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* @note Not to be confused with @c
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* elm_object_signal_callback_add(), which will add callbacks to @b
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* signals coming from a widget's theme, not input events.
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*
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* @note Not to be confused with @c
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* edje_object_signal_callback_add(), which does the same as
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* elm_object_signal_callback_add(), but directly on an Edje
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* object.
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*
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* @note Not to be confused with @c
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* evas_object_smart_callback_add(), which adds callbacks to smart
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* objects' <b>smart events</b>, and not input events.
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*
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* @see elm_object_event_callback_del()
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*
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* @ingroup General
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*/
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EAPI void elm_object_event_callback_add(Evas_Object *obj, Elm_Event_Cb func, const void *data);
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/**
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* Remove an event callback from a widget.
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*
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* This function removes a callback, previously attached to event emission
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* by the @p obj.
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* The parameters func and data must match exactly those passed to
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* a previous call to elm_object_event_callback_add(). The data pointer that
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* was passed to this call will be returned.
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*
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* @param obj The object
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* @param func The callback function to be executed when the event is
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* emitted.
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* @param data Data to pass in to the callback function.
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* @return The data pointer
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* @ingroup General
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*/
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EAPI void *elm_object_event_callback_del(Evas_Object *obj, Elm_Event_Cb func, const void *data);
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