This widget, as the name indicates, is a pre-made image slideshow panel, with API functions acting on (child) image items presentation. Between those actions, are:

advance to next/previous image
select the style of image transition animation
set the exhibition time for each image
start/stop the slideshow

The transition animations are defined in the widget's theme, consequently new animations can be added without having to update the widget's code.

Slideshow items

For slideshow items, just like for genlist ones, the user defines a classes, specifying functions that will be called on the item's creation and deletion times.

The Elm_Slideshow_Item_Class structure contains the following members:

func.get - When an item is displayed, this function is called, and it's where one should create the item object, de facto. For example, the object can be a pure Evas image object or an Elementary photocam widget. See SlideshowItemGetFunc.
func.del - When an item is no more displayed, this function is called, where the user must delete any data associated to the item. See SlideshowItemDelFunc.

Slideshow caching

The slideshow provides facilities to have items adjacent to the one being displayed already "realized" (i.e. loaded) for you, so that the system does not have to decode image data anymore at the time it has to actually switch images on its viewport. The user is able to set the numbers of items to be cached before and after the current item, in the widget's item list.

This widget inherits from the Layout one, so that all the functions acting on it also work for slideshow objects.

This widget emits the following signals, besides the ones sent from Layout:

"changed" - when the slideshow switches its view to a new item. event_info parameter in callback contains the current visible item
"transition,end" - when a slide transition ends. event_info parameter in callback contains the current visible item
"focused" - When the slideshow has received focus. (since 1.8)
"unfocused" - When the slideshow has lost focus. (since 1.8)
"language,changed" - the program's language changed (since 1.9)

Supported elm_object_item common APIs.

elm_object_item_del

List of examples for the slideshow widget:

Slideshow widget example

Functions
void	elm_slideshow_cache_after_set (Elm_Slideshow *obj, int count)
	Set the number of items to cache, on a given slideshow widget, after the current item.
int	elm_slideshow_cache_after_get (const Elm_Slideshow *obj)
	Get the number of items to cache, on a given slideshow widget, after the current item.
void	elm_slideshow_cache_before_set (Elm_Slideshow *obj, int count)
	Set the number of items to cache, on a given slideshow widget, before the current item.
int	elm_slideshow_cache_before_get (const Elm_Slideshow *obj)
	Get the number of items to cache, on a given slideshow widget, before the current item.
void	elm_slideshow_layout_set (Elm_Slideshow obj, const char layout)
	Set the current slide layout in use for a given slideshow widget.
const char *	elm_slideshow_layout_get (const Elm_Slideshow *obj)
	Get the current slide layout in use for a given slideshow widget.
void	elm_slideshow_transition_set (Elm_Slideshow obj, const char transition)
	Set the current slide transition/effect in use for a given slideshow widget.
const char *	elm_slideshow_transition_get (const Elm_Slideshow *obj)
	Get the current slide transition/effect in use for a given slideshow widget.
void	elm_slideshow_loop_set (Elm_Slideshow *obj, Eina_Bool loop)
	Set if the slideshow items should be displayed cyclically or not, so when the end is reached it will restart from the first item.
Eina_Bool	elm_slideshow_loop_get (const Elm_Slideshow *obj)
	Get if, after a slideshow is started, for a given slideshow widget, its items are to be displayed cyclically or not.
void	elm_slideshow_timeout_set (Elm_Slideshow *obj, double timeout)
	Set the interval between each image transition on a given slideshow widget and start the slideshow itself.
double	elm_slideshow_timeout_get (const Elm_Slideshow *obj)
	Get the interval set for image transitions on a given slideshow widget.
const Eina_List *	elm_slideshow_items_get (const Elm_Slideshow *obj)
	Get the internal list of items in a given slideshow widget.
const Eina_List *	elm_slideshow_transitions_get (const Elm_Slideshow *obj)
	Returns the list of sliding transition/effect names available, for a given slideshow widget.
unsigned int	elm_slideshow_count_get (const Elm_Slideshow *obj)
	Get the number of items stored in a given slideshow widget.
Elm_Widget_Item *	elm_slideshow_item_current_get (const Elm_Slideshow *obj)
	Returns the currently displayed item, in a given slideshow widget.
const Eina_List *	elm_slideshow_layouts_get (const Elm_Slideshow *obj)
	Returns the list of layout names available, for a given slideshow widget.
void	elm_slideshow_previous (Elm_Slideshow *obj)
	Slide to the previous item, in a given slideshow widget.
Elm_Widget_Item *	elm_slideshow_item_nth_get (const Elm_Slideshow *obj, unsigned int nth)
	Get the the item, in a given slideshow widget, placed at position `nth`, in its internal items list.
void	elm_slideshow_next (Elm_Slideshow *obj)
	Slide to the next item, in a given slideshow widget.
void	elm_slideshow_clear (Elm_Slideshow *obj)
	Remove all items from a given slideshow widget.
Elm_Widget_Item *	elm_slideshow_item_add (Elm_Slideshow obj, const Elm_Slideshow_Item_Class itc, const void *data)
	Add (append) a new item in a given slideshow widget.
Elm_Widget_Item *	elm_slideshow_item_sorted_insert (Elm_Slideshow obj, const Elm_Slideshow_Item_Class itc, const void *data, Eina_Compare_Cb func)
	Insert a new item into the given slideshow widget, using the `func` function to sort items (by item handles).
Evas_Object *	elm_slideshow_add (Evas_Object *parent)
Typedefs
typedef Evas_Object (	SlideshowItemGetFunc )(void data, Evas_Object obj)
typedef void(*	SlideshowItemDelFunc )(void data, Evas_Object obj)
typedef struct _Elm_Slideshow_Item_Class	Elm_Slideshow_Item_Class
typedef struct _Elm_Slideshow_Item_Class_Func	Elm_Slideshow_Item_Class_Func

Typedef Documentation

typedef struct _Elm_Slideshow_Item_Class Elm_Slideshow_Item_Class

Slideshow item class definition struct

typedef struct _Elm_Slideshow_Item_Class_Func Elm_Slideshow_Item_Class_Func

Class functions for slideshow item classes.

typedef void(* SlideshowItemDelFunc)(void *data, Evas_Object *obj)

Deletion class function for slideshow item classes.

typedef Evas_Object*(* SlideshowItemGetFunc)(void *data, Evas_Object *obj)

Image fetching class function for slideshow item classes.

Function Documentation

Evas_Object* elm_slideshow_add ( Evas_Object * parent )

Add a new slideshow widget to the given parent Elementary (container) object

Parameters:

parent The parent object

Returns:: A new slideshow widget handle or NULL, on errors

This function inserts a new slideshow widget on the canvas.

Examples:: slideshow_example.c.

int elm_slideshow_cache_after_get ( const Elm_Slideshow * obj )

Get the number of items to cache, on a given slideshow widget, after the current item.

Parameters:

[in] obj The object.

Returns:: Number of items to cache after the current one.

void elm_slideshow_cache_after_set	(	Elm_Slideshow *	obj,
		int	count
	)

Set the number of items to cache, on a given slideshow widget, after the current item.

The default value for this property is 2. See slideshow caching for more details.

Parameters:

[in]	obj	The object.
[in]	count	Number of items to cache after the current one.

int elm_slideshow_cache_before_get ( const Elm_Slideshow * obj )

Get the number of items to cache, on a given slideshow widget, before the current item.

Parameters:

[in] obj The object.

Returns:: Number of items to cache before the current one.

void elm_slideshow_cache_before_set	(	Elm_Slideshow *	obj,
		int	count
	)

Set the number of items to cache, on a given slideshow widget, before the current item.

The default value for this property is 2. See slideshow caching for more details.

Parameters:

[in]	obj	The object.
[in]	count	Number of items to cache before the current one.

void elm_slideshow_clear ( Elm_Slideshow * obj )

Remove all items from a given slideshow widget.

This removes (and deletes) all items in obj, leaving it empty.

Parameters:

[in] obj The object.

unsigned int elm_slideshow_count_get ( const Elm_Slideshow * obj )

Get the number of items stored in a given slideshow widget.

Parameters:

[in] obj The object.

Returns:: The number of items on obj, at the moment of this call.

Elm_Widget_Item* elm_slideshow_item_add	(	Elm_Slideshow *	obj,
		const Elm_Slideshow_Item_Class *	itc,
		const void *	data
	)

Add (append) a new item in a given slideshow widget.

Add a new item to obj's internal list of items, appending it. The item's class must contain the function really fetching the image object to show for this item, which could be an Evas image object or an Elementary photo, for example. The data parameter is going to be passed to both class functions of the item.

Parameters:

[in]	obj	The object.
[in]	itc	The item class for the item.
[in]	data	The item's data.

Returns:: A handle to the item added or null on errors.

Elm_Widget_Item* elm_slideshow_item_current_get ( const Elm_Slideshow * obj )

Returns the currently displayed item, in a given slideshow widget.

Parameters:

[in] obj The object.

Returns:: A handle to the item being displayed in obj or null, if none is (and on errors)

Elm_Widget_Item* elm_slideshow_item_nth_get	(	const Elm_Slideshow *	obj,
		unsigned int	nth
	)

Get the the item, in a given slideshow widget, placed at position nth, in its internal items list.

Parameters:

[in]	obj	The object.
[in]	nth	The number of the item to grab a handle to (0 being the first).

Returns:: The item stored in obj at position nth or null if there's no item with that index (and on errors).

Elm_Widget_Item* elm_slideshow_item_sorted_insert	(	Elm_Slideshow *	obj,
		const Elm_Slideshow_Item_Class *	itc,
		const void *	data,
		Eina_Compare_Cb	func
	)

Insert a new item into the given slideshow widget, using the func function to sort items (by item handles).

Add a new item to obj's internal list of items, in a position determined by the func comparing function. The item's class must contain the function really fetching the image object to show for this item, which could be an Evas image object or an Elementary photo, for example. The data parameter is going to be passed to both class functions of the item.

Parameters:

[in]	obj	The object.
[in]	itc	The item class for the item.
[in]	data	The item's data.
[in]	func	The comparing function to be used to sort the slideshow items by Elm_Slideshow_Item_Class item handles.

Returns:: Returns The slideshow item handle, on success, or null on errors.

Examples:: slideshow_example.c.

const Eina_List* elm_slideshow_items_get ( const Elm_Slideshow * obj )

Get the internal list of items in a given slideshow widget.

This list is not to be modified in any way and must not be freed.

Warning:: This list is only valid until obj object's internal items list is changed. It should be fetched again with another call to this function when changes happen.

Parameters:

[in] obj The object.

Returns:: The list of items (#Elm.Widget.Item as data) or null on errors.

Examples:: slideshow_example.c.

const char* elm_slideshow_layout_get ( const Elm_Slideshow * obj )

Get the current slide layout in use for a given slideshow widget.

Parameters:

[in] obj The object.

Returns:: The new layout's name string.

Examples:: slideshow_example.c.

void elm_slideshow_layout_set	(	Elm_Slideshow *	obj,
		const char *	layout
	)

Set the current slide layout in use for a given slideshow widget.

If layout is implemented in obj's theme (i.e., is contained in the list returned by elm_slideshow_layouts_get()), this new images layout will be used on the widget.

See elm_slideshow_layouts_get for more details.

Parameters:

[in]	obj	The object.
[in]	layout	The new layout's name string.

Examples:: slideshow_example.c.

const Eina_List* elm_slideshow_layouts_get ( const Elm_Slideshow * obj )

Returns the list of layout names available, for a given slideshow widget.

Slideshow layouts will change how the widget is to dispose each image item in its viewport, with regard to cropping, scaling, etc.

The layouts, which come from obj's theme, must be an EDC data item name $"layouts" on the theme file, with (prefix) names of EDC programs actually implementing them.

The available layouts for slideshows on the default theme are "fullscreen" (item images with original aspect, scaled to touch top and down slideshow borders or, if the image's height is not enough, left and right slideshow borders) and "not_fullscreen" (the same behavior as the "fullscreen" one, but always leaving 10% of the slideshow's dimensions of distance between the item image's borders and the slideshow borders, for each axis)-

Warning:: The stringshared strings get no new references exclusive to the user grabbing the list, here, so if you'd like to use them out of this call's context, you'd better eina_stringshare_ref them.

Parameters:

[in] obj The object.

Returns:: The list of layouts (list of stringshared strings as data)

Examples:: slideshow_example.c.

Eina_Bool elm_slideshow_loop_get ( const Elm_Slideshow * obj )

Get if, after a slideshow is started, for a given slideshow widget, its items are to be displayed cyclically or not.

Parameters:

[in] obj The object.

Returns:: Use true to make it cycle through items or false for it to stop at the end of obj's internal list of items.

void elm_slideshow_loop_set	(	Elm_Slideshow *	obj,
		Eina_Bool	loop
	)

Set if the slideshow items should be displayed cyclically or not, so when the end is reached it will restart from the first item.

Note:: This will affect the "automatic" slidshow behaviour and the elm_slideshow_next and elm_slideshow_previous functions as well.

Parameters:

[in]	obj	The object.
[in]	loop	Use `true` to make it cycle through items or `false` for it to stop at the end of `obj's` internal list of items.

Examples:: slideshow_example.c.

void elm_slideshow_next ( Elm_Slideshow * obj )

Slide to the next item, in a given slideshow widget.

The sliding animation obj is set to use will be the transition effect used, after this call is issued.

Note:: If the end of the slideshow's internal list of items is reached, it'll wrap around to the list's beginning, again.

Parameters:

[in] obj The object.

Examples:: slideshow_example.c.

void elm_slideshow_previous ( Elm_Slideshow * obj )

Slide to the previous item, in a given slideshow widget.

The sliding animation obj is set to use will be the transition effect used, after this call is issued.

Note:: If the beginning of the slideshow's internal list of items is reached, it'll wrap around to the list's end, again.

Parameters:

[in] obj The object.

Examples:: slideshow_example.c.

double elm_slideshow_timeout_get ( const Elm_Slideshow * obj )

Get the interval set for image transitions on a given slideshow widget.

Parameters:

[in] obj The object.

Returns:: The new displaying timeout for images.

Examples:: slideshow_example.c.

void elm_slideshow_timeout_set	(	Elm_Slideshow *	obj,
		double	timeout
	)

Set the interval between each image transition on a given slideshow widget and start the slideshow itself.

After this call, the slideshow widget will start cycling its view, sequentially and automatically, with the images of the items it has. The time between each new image displayed is going to be timeout, in seconds. If a different timeout was set previously and an slideshow was in progress, it will continue with the new time between transitions, after this call.

Note:: A value less than or equal to 0 on timeout will disable the widget's internal timer, thus halting any slideshow which could be happening on obj.

Parameters:

[in]	obj	The object.
[in]	timeout	The new displaying timeout for images.

Examples:: slideshow_example.c.

const char* elm_slideshow_transition_get ( const Elm_Slideshow * obj )

Get the current slide transition/effect in use for a given slideshow widget.

Parameters:

[in] obj The object.

Returns:: The new transition's name string.

void elm_slideshow_transition_set	(	Elm_Slideshow *	obj,
		const char *	transition
	)

Set the current slide transition/effect in use for a given slideshow widget.

If transition is implemented in obj's theme (i.e., is contained in the list returned by elm_slideshow_transitions_get), this new sliding effect will be used on the widget.

Parameters:

[in]	obj	The object.
[in]	transition	The new transition's name string.

Examples:: slideshow_example.c.

const Eina_List* elm_slideshow_transitions_get ( const Elm_Slideshow * obj )

Returns the list of sliding transition/effect names available, for a given slideshow widget.

The transitions, which come from obj's theme, must be an EDC data item named $"transitions" on the theme file, with (prefix) names of EDC programs actually implementing them.

The available transitions for slideshows on the default theme are "fade" (the current item fades out, while the new one fades in to the slideshow's viewport), "black_fade" (the current item fades to black, and just then, the new item will fade in), "horizontal" (the current item slides horizontally, until it gets out of the slideshow's viewport, while the new item comes from the left to take its place), "vertical" (the current item slides vertically, until it gets out of the slideshow's viewport, while the new item comes from the bottom to take its place), "square" (the new item starts to appear from the middle of the current one, but with a tiny size, growing until its target (full) size and covering the old one.

Warning:: The stringshared strings get no new references exclusive to the user grabbing the list, here, so if you'd like to use them out of this call's context, you'd better eina_stringshare_ref them. Also the list is an internal list and so is only valid for as long as the slideshow object is valid and has not internally changed its list for some reason, so make a copy if you need it around.

Parameters:

[in] obj The object.

Returns:: The list of transitions (list of stringshared strings as data).

Examples:: slideshow_example.c.

Slideshow items

Slideshow caching

Functions

Typedefs

Typedef Documentation

Function Documentation