Progress bar

---

The progress bar is a widget for visually representing the progress status of a given job/task.

A progress bar may be horizontal or vertical. It may display an icon besides it, as well as primary and units labels. The former is meant to label the widget as a whole, while the latter, which is formatted with floating point values (and thus accepts a printf-style format string, like "%1.2f units"), is meant to label the widget's progress value. Label, icon and unit strings/objects are optional for progress bars.

A progress bar may be inverted, in which case it gets its values inverted, i.e., high values being on the left or top and low values on the right or bottom, for horizontal and vertical modes respectively.

The span of the progress, as set by elm_progressbar_span_size_set(), is its length (horizontally or vertically), unless one puts size hints on the widget to expand on desired directions, by any container. That length will be scaled by the object or applications scaling factor. Applications can query the progress bar for its value with elm_progressbar_value_get().

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

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

• "changed" - when the value is changed (since 1.7)
• "focused" - When the progressbar has received focus. (since 1.8)
• "unfocused" - When the progressbar has lost focus. (since 1.8)
• "language,changed" - the program's language changed (since 1.9)

This widget has the following styles:

• "default"
• "wheel" (simple style, no text, no progression, only "pulse" effect is available)

Default content parts of the progressbar widget that you can use for are:

• "icon" - An icon of the progressbar

Default text parts of the progressbar widget that you can use for are:

• "default" - A label of the progressbar

Supported elm_object common APIs.

• elm_object_part_text_set
• elm_object_part_text_get
• elm_object_part_content_set
• elm_object_part_content_get
• elm_object_part_content_unset

Here is an example on its usage:

• Progress bar widget example

Functions
Evas_Object *	elm_progressbar_add (Evas_Object *parent)
void	elm_progressbar_span_size_set (Evas_Object *obj, Evas_Coord size)
	Control the (exact) length of the bar region of a given progress bar widget.
Evas_Coord	elm_progressbar_span_size_get (const Evas_Object *obj)
	Control the (exact) length of the bar region of a given progress bar widget.
void	elm_progressbar_value_set (Evas_Object *obj, double val)
	Control the progress value (in percentage) on a given progress bar widget.
double	elm_progressbar_value_get (const Evas_Object *obj)
	Get the progress value (in percentage) on a given progress bar widget.
void	elm_progressbar_inverted_set (Evas_Object *obj, Eina_Bool inverted)
	Invert a given progress bar widget's displaying values order.
Eina_Bool	elm_progressbar_inverted_get (const Evas_Object *obj)
	Invert a given progress bar widget's displaying values order.
void	elm_progressbar_horizontal_set (Evas_Object *obj, Eina_Bool horizontal)
	Control the orientation of a given progress bar widget.
Eina_Bool	elm_progressbar_horizontal_get (const Evas_Object *obj)
	Control the orientation of a given progress bar widget.
void	elm_progressbar_unit_format_set (Evas_Object *obj, const char *units)
	Control the format string for a given progress bar widget's units label.
const char *	elm_progressbar_unit_format_get (const Evas_Object *obj)
	Control the format string for a given progress bar widget's units label.
void	elm_progressbar_unit_format_function_set (Evas_Object *obj, progressbar_func_type func, progressbar_freefunc_type free_func)
	Set the format function pointer for the units label.
void	elm_progressbar_pulse_set (Evas_Object *obj, Eina_Bool pulse)
	Control whether a given progress bar widget is at "pulsing mode" or not.
Eina_Bool	elm_progressbar_pulse_get (const Evas_Object *obj)
	Control whether a given progress bar widget is at "pulsing mode" or not.
void	elm_progressbar_pulse (Evas_Object *obj, Eina_Bool state)
	Start/stop a given progress bar "pulsing" animation, if its under that mode.
Eina_Bool	elm_progressbar_is_pulsing_get (const Evas_Object *obj)
	Get the pulsing state on a given progressbar widget.
void	elm_progressbar_part_value_set (Evas_Object *obj, const char *part, double val)
	Set the progress value (in percentage) on a given progress bar widget for the given part name.
double	elm_progressbar_part_value_get (const Evas_Object *obj, const char *part)
	Get the progress value (in percentage) on a given progress bar widget for a particular part.

---

Function Documentation

Evas_Object* elm_progressbar_add

(

Evas_Object *

parent

)

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

Parameters:

parent

The parent object

Returns:

a new progress bar widget handle or NULL, on errors

This function inserts a new progress bar widget on the canvas.

Since :

2.3.1

Examples:

progressbar_example.c.

Eina_Bool elm_progressbar_horizontal_get

(

const Evas_Object *

obj

)

Control the orientation of a given progress bar widget.

Use this function to change how your progress bar is to be disposed: vertically or horizontally.

Returns:

Use true to make obj to be horizontal, false to make it vertical

Since :

2.3.1

void elm_progressbar_horizontal_set	(	Evas_Object *	obj,
		Eina_Bool	horizontal
	)

Control the orientation of a given progress bar widget.

Use this function to change how your progress bar is to be disposed: vertically or horizontally.

Parameters:

[in]

horizontal

Use true to make obj to be horizontal, false to make it vertical

Since :

2.3.1

Examples:

progressbar_example.c.

Eina_Bool elm_progressbar_inverted_get

(

const Evas_Object *

obj

)

Invert a given progress bar widget's displaying values order.

A progress bar may be inverted, in which state it gets its values inverted, with high values being on the left or top and low values on the right or bottom, as opposed to normally have the low values on the former and high values on the latter, respectively, for horizontal and vertical modes.

Returns:

Use true to make obj inverted, false to bring it back to default, non-inverted values.

Since :

2.3.1

void elm_progressbar_inverted_set	(	Evas_Object *	obj,
		Eina_Bool	inverted
	)

Invert a given progress bar widget's displaying values order.

A progress bar may be inverted, in which state it gets its values inverted, with high values being on the left or top and low values on the right or bottom, as opposed to normally have the low values on the former and high values on the latter, respectively, for horizontal and vertical modes.

Parameters:

[in]

inverted

Use true to make obj inverted, false to bring it back to default, non-inverted values.

Since :

2.3.1

Examples:

progressbar_example.c.

Eina_Bool elm_progressbar_is_pulsing_get

(

const Evas_Object *

obj

)

Get the pulsing state on a given progressbar widget.

Returns:

true if the obj is currently pulsing

Since (EFL) :

1.19

double elm_progressbar_part_value_get	(	const Evas_Object *	obj,
		const char *	part
	)

Get the progress value (in percentage) on a given progress bar widget for a particular part.

Parameters:

[in]

part

The part name of the progress bar

Returns:

The value of the progressbar

Since (EFL) :

1.8

Since :

3.0

void elm_progressbar_part_value_set	(	Evas_Object *	obj,
		const char *	part,
		double	val
	)

Set the progress value (in percentage) on a given progress bar widget for the given part name.

Use this call to set progress bar status for more than one progress status .

Parameters:

[in]	part	The partname to which val have to set
[in]	val	The progress value (must be between $0.0 and 1.0)

Since (EFL) :

1.8

Since :

3.0

void elm_progressbar_pulse	(	Evas_Object *	obj,
		Eina_Bool	state
	)

Start/stop a given progress bar "pulsing" animation, if its under that mode.

Note:

This call won't do anything if obj is not under "pulsing mode".

Parameters:

[in]

state

true, to start the pulsing animation, false to stop it

Since :

2.3.1

Examples:

progressbar_example.c.

Eina_Bool elm_progressbar_pulse_get

(

const Evas_Object *

obj

)

Control whether a given progress bar widget is at "pulsing mode" or not.

By default, progress bars will display values from the low to high value boundaries. There are, though, contexts in which the progress of a given task is unknown. For such cases, one can set a progress bar widget to a "pulsing state", to give the user an idea that some computation is being held, but without exact progress values. In the default theme, it will animate its bar with the contents filling in constantly and back to non-filled, in a loop. To start and stop this pulsing animation, one has to explicitly call elm_progressbar_pulse().

Returns:

true to put obj in pulsing mode, false to put it back to its default one

Since :

2.3.1

void elm_progressbar_pulse_set	(	Evas_Object *	obj,
		Eina_Bool	pulse
	)

Control whether a given progress bar widget is at "pulsing mode" or not.

By default, progress bars will display values from the low to high value boundaries. There are, though, contexts in which the progress of a given task is unknown. For such cases, one can set a progress bar widget to a "pulsing state", to give the user an idea that some computation is being held, but without exact progress values. In the default theme, it will animate its bar with the contents filling in constantly and back to non-filled, in a loop. To start and stop this pulsing animation, one has to explicitly call elm_progressbar_pulse().

Parameters:

[in]

pulse

true to put obj in pulsing mode, false to put it back to its default one

Since :

2.3.1

Examples:

progressbar_example.c.

Evas_Coord elm_progressbar_span_size_get

(

const Evas_Object *

obj

)

Control the (exact) length of the bar region of a given progress bar widget.

This sets the minimum width (when in horizontal mode) or height (when in vertical mode) of the actual bar area of the progress bar obj. This in turn affects the object's minimum size. Use this when you're not setting other size hints expanding on the given direction (like weight and alignment hints) and you would like it to have a specific size.

Note:

Icon, label and unit text around obj will require their own space, which will make obj to require more the size, actually.

Returns:

The length of the progress bar's bar region

Since :

2.3.1

void elm_progressbar_span_size_set	(	Evas_Object *	obj,
		Evas_Coord	size
	)

Control the (exact) length of the bar region of a given progress bar widget.

This sets the minimum width (when in horizontal mode) or height (when in vertical mode) of the actual bar area of the progress bar obj. This in turn affects the object's minimum size. Use this when you're not setting other size hints expanding on the given direction (like weight and alignment hints) and you would like it to have a specific size.

Note:

Icon, label and unit text around obj will require their own space, which will make obj to require more the size, actually.

Parameters:

[in]

size

The length of the progress bar's bar region

Since :

2.3.1

Examples:

progressbar_example.c.

void elm_progressbar_unit_format_function_set	(	Evas_Object *	obj,
		progressbar_func_type	func,
		progressbar_freefunc_type	free_func
	)

Set the format function pointer for the units label.

Set the callback function to format the unit string.

See: elm_progressbar_unit_format_set for more info on how this works.

Parameters:

[in]	func	The unit format function
[in]	free_func	The freeing function for the format string.

Since (EFL) :

1.7

Since :

2.3.1

Examples:

progressbar_example.c.

const char* elm_progressbar_unit_format_get

(

const Evas_Object *

obj

)

Control the format string for a given progress bar widget's units label.

If NULL is passed on format, it will make obj's units area to be hidden completely. If not, it'll set the format string for the units label's text. The units label is provided a floating point value, so the units text is up display at most one floating point value. Note that the units label is optional. Use a format string such as "%1.2f meters" for example.

Note:

The default format string for a progress bar is an integer percentage, as in $"%.0f %%".

Returns:

The format string for obj's units label

Since :

2.3.1

void elm_progressbar_unit_format_set	(	Evas_Object *	obj,
		const char *	units
	)

Control the format string for a given progress bar widget's units label.

If NULL is passed on format, it will make obj's units area to be hidden completely. If not, it'll set the format string for the units label's text. The units label is provided a floating point value, so the units text is up display at most one floating point value. Note that the units label is optional. Use a format string such as "%1.2f meters" for example.

Note:

The default format string for a progress bar is an integer percentage, as in $"%.0f %%".

Parameters:

[in]

units

The format string for obj's units label

Since :

2.3.1

Examples:

progressbar_example.c.

double elm_progressbar_value_get

(

const Evas_Object *

obj

)

Get the progress value (in percentage) on a given progress bar widget.

Returns:

The progress value (between $0.0 and 1.0)

Since :

2.3.1

Examples:

progressbar_example.c.

void elm_progressbar_value_set	(	Evas_Object *	obj,
		double	val
	)

Control the progress value (in percentage) on a given progress bar widget.

Use this call to set progress bar levels.

Note:

If you pass a value out of the specified range for val, it will be interpreted as the closest of the boundary values in the range.

Parameters:

[in]

val

The progress value (must be between $0.0 and 1.0)

Since :

2.3.1

Examples:

progressbar_example.c.