Gtk.SpinButton¶

Example¶

Subclasses:: None

Methods¶

Inherited:: Gtk.Entry (76), Gtk.Widget (278), GObject.Object (37), Gtk.Buildable (10), Gtk.CellEditable (3), Gtk.Editable (13), Gtk.Orientable (2)
Structs:: Gtk.WidgetClass (12), GObject.ObjectClass (5)

class	`new` (adjustment, climb_rate, digits)
class	`new_with_range` (min, max, step)
	`configure` (adjustment, climb_rate, digits)
	`get_adjustment` ()
	`get_digits` ()
	`get_increments` ()
	`get_numeric` ()
	`get_range` ()
	`get_snap_to_ticks` ()
	`get_update_policy` ()
	`get_value` ()
	`get_value_as_int` ()
	`get_wrap` ()
	`set_adjustment` (adjustment)
	`set_digits` (digits)
	`set_increments` (step, page)
	`set_numeric` (numeric)
	`set_range` (min, max)
	`set_snap_to_ticks` (snap_to_ticks)
	`set_update_policy` (policy)
	`set_value` (value)
	`set_wrap` (wrap)
	`spin` (direction, increment)
	`update` ()

Virtual Methods¶

Inherited:: Gtk.Entry (14), Gtk.Widget (82), GObject.Object (7), Gtk.Buildable (10), Gtk.CellEditable (3), Gtk.Editable (10)

	`do_change_value` (scroll)
	`do_input` (new_value)
	`do_output` ()
	`do_value_changed` ()
	`do_wrapped` ()

Properties¶

Inherited:: Gtk.Entry (51), Gtk.Widget (39), Gtk.CellEditable (1), Gtk.Orientable (1)

Name	Type	Flags	Short Description
`adjustment`	`Gtk.Adjustment`	r/w	The adjustment that holds the value of the spin button
`climb-rate`	`float`	r/w/en	The acceleration rate when you hold down a button or key
`digits`	`int`	r/w/en	The number of decimal places to display
`numeric`	`bool`	r/w/en	Whether non-numeric characters should be ignored
`snap-to-ticks`	`bool`	r/w/en	Whether erroneous values are automatically changed to a spin button’s nearest step increment
`update-policy`	`Gtk.SpinButtonUpdatePolicy`	r/w/en	Whether the spin button should update always, or only when the value is legal
`value`	`float`	r/w/en	Reads the current value, or sets a new value
`wrap`	`bool`	r/w/en	Whether a spin button should wrap upon reaching its limits

Style Properties¶

Inherited:: Gtk.Entry (4), Gtk.Widget (17)

Name	Type	Default	Flags	Short Description
`shadow-type`	`Gtk.ShadowType`	`Gtk.ShadowType.IN`	d/r	Style of bevel around the spin button `deprecated`

Signals¶

Inherited:: Gtk.Entry (15), Gtk.Widget (69), GObject.Object (1), Gtk.CellEditable (2), Gtk.Editable (3)

Name	Short Description
`change-value`	The `::change-value` signal is a `keybinding signal` which gets emitted when the user initiates a value change.
`input`	The `::input` signal can be used to influence the conversion of the users input into a double value.
`output`	The `::output` signal can be used to change to formatting of the value that is displayed in the spin buttons entry.
`value-changed`	The `::value-changed` signal is emitted when the value represented by spinbutton changes.
`wrapped`	The `::wrapped` signal is emitted right after the spinbutton wraps from its maximum to minimum value or vice-versa.

Fields¶

Inherited:: Gtk.Entry (15), Gtk.Widget (69), GObject.Object (1), Gtk.CellEditable (2), Gtk.Editable (3)

Name	Type	Access	Description
entry	`Gtk.Entry`	r

Class Details¶

class Gtk.SpinButton(**kwargs)¶

Bases:: Gtk.Entry, Gtk.Orientable
Abstract:: No
Structure:: Gtk.SpinButtonClass

A Gtk.SpinButton is an ideal way to allow the user to set the value of some attribute. Rather than having to directly type a number into a Gtk.Entry, Gtk.SpinButton allows the user to click on one of two arrows to increment or decrement the displayed value. A value can still be typed in, with the bonus that it can be checked to ensure it is in a given range.

The main properties of a Gtk.SpinButton are through an adjustment. See the Gtk.Adjustment section for more details about an adjustment’s properties. Note that Gtk.SpinButton will by default make its entry large enough to accomodate the lower and upper bounds of the adjustment, which can lead to surprising results. Best practice is to set both the Gtk.Entry :width-chars and Gtk.Entry :max-width-chars poperties to the desired number of characters to display in the entry.

CSS nodes

spinbutton.horizontal
├── undershoot.left
├── undershoot.right
├── entry
│   ╰── ...
├── button.down
╰── button.up

spinbutton.vertical
├── undershoot.left
├── undershoot.right
├── button.up
├── entry
│   ╰── ...
╰── button.down

GtkSpinButtons main CSS node has the name spinbutton. It creates subnodes for the entry and the two buttons, with these names. The button nodes have the style classes .up and .down. The Gtk.Entry subnodes (if present) are put below the entry node. The orientation of the spin button is reflected in the .vertical or .horizontal style class on the main node.

Using a Gtk.SpinButton to get an integer

// Provides a function to retrieve an integer value from a GtkSpinButton
// and creates a spin button to model percentage values.

gint
grab_int_value (GtkSpinButton *button,
                gpointer       user_data)
{
  return gtk_spin_button_get_value_as_int (button);
}

void
create_integer_spin_button (void)
{

  GtkWidget *window, *button;
  GtkAdjustment *adjustment;

  adjustment = gtk_adjustment_new (50.0, 0.0, 100.0, 1.0, 5.0, 0.0);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_container_set_border_width (GTK_CONTAINER (window), 5);

  // creates the spinbutton, with no decimal places
  button = gtk_spin_button_new (adjustment, 1.0, 0);
  gtk_container_add (GTK_CONTAINER (window), button);

  gtk_widget_show_all (window);
}

Using a Gtk.SpinButton to get a floating point value

// Provides a function to retrieve a floating point value from a
// GtkSpinButton, and creates a high precision spin button.

gfloat
grab_float_value (GtkSpinButton *button,
                  gpointer       user_data)
{
  return gtk_spin_button_get_value (button);
}

void
create_floating_spin_button (void)
{
  GtkWidget *window, *button;
  GtkAdjustment *adjustment;

  adjustment = gtk_adjustment_new (2.500, 0.0, 5.0, 0.001, 0.1, 0.0);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_container_set_border_width (GTK_CONTAINER (window), 5);

  // creates the spinbutton, with three decimal places
  button = gtk_spin_button_new (adjustment, 0.001, 3);
  gtk_container_add (GTK_CONTAINER (window), button);

  gtk_widget_show_all (window);
}

classmethod new(adjustment, climb_rate, digits)[source]¶

Parameters:

adjustment (Gtk.Adjustment or None) – the Gtk.Adjustment object that this spin button should use, or None
climb_rate (float) – specifies by how much the rate of change in the value will accelerate if you continue to hold down an up/down button or arrow key
digits (int) – the number of decimal places to display

Returns:

The new spin button as a Gtk.Widget

Return type:

Gtk.Widget

Creates a new Gtk.SpinButton.

classmethod new_with_range(min, max, step)[source]¶

Parameters:

min (float) – Minimum allowable value
max (float) – Maximum allowable value
step (float) – Increment added or subtracted by spinning the widget

Returns:

The new spin button as a Gtk.Widget

Return type:

Gtk.Widget

This is a convenience constructor that allows creation of a numeric Gtk.SpinButton without manually creating an adjustment. The value is initially set to the minimum value and a page increment of 10 * step is the default. The precision of the spin button is equivalent to the precision of step.

Note that the way in which the precision is derived works best if step is a power of ten. If the resulting precision is not suitable for your needs, use Gtk.SpinButton.set_digits() to correct it.

configure(adjustment, climb_rate, digits)[source]¶

Parameters:

adjustment (Gtk.Adjustment or None) – a Gtk.Adjustment to replace the spin button’s existing adjustment, or None to leave its current adjustment unchanged
climb_rate (float) – the new climb rate
digits (int) – the number of decimal places to display in the spin button

Changes the properties of an existing spin button. The adjustment, climb rate, and number of decimal places are updated accordingly.

get_adjustment()[source]¶

Returns:: the Gtk.Adjustment of self
Return type:: Gtk.Adjustment

Get the adjustment associated with a Gtk.SpinButton

get_digits()[source]¶

Returns:: the current precision
Return type:: int

Fetches the precision of self. See Gtk.SpinButton.set_digits().

get_increments()[source]¶

Returns:

step:: location to store step increment, or None
page:: location to store page increment, or None

Return type:

(step: float, page: float)

Gets the current step and page the increments used by self. See Gtk.SpinButton.set_increments().

get_numeric()[source]¶

Returns:: True if only numeric text can be entered
Return type:: bool

Returns whether non-numeric text can be typed into the spin button. See Gtk.SpinButton.set_numeric().

get_range()[source]¶

Returns:

min:: location to store minimum allowed value, or None
max:: location to store maximum allowed value, or None

Return type:

(min: float, max: float)

Gets the range allowed for self. See Gtk.SpinButton.set_range().

get_snap_to_ticks()[source]¶

Returns:: True if values are snapped to the nearest step
Return type:: bool

Returns whether the values are corrected to the nearest step. See Gtk.SpinButton.set_snap_to_ticks().

get_update_policy()[source]¶

Returns:: the current update policy
Return type:: Gtk.SpinButtonUpdatePolicy

Gets the update behavior of a spin button. See Gtk.SpinButton.set_update_policy().

get_value()[source]¶

Returns:: the value of self
Return type:: float

Get the value in the self.

get_value_as_int()[source]¶

Returns:: the value of self
Return type:: int

Get the value self represented as an integer.

get_wrap()[source]¶

Returns:: True if the spin button wraps around
Return type:: bool

Returns whether the spin button’s value wraps around to the opposite limit when the upper or lower limit of the range is exceeded. See Gtk.SpinButton.set_wrap().

set_adjustment(adjustment)[source]¶

Parameters:: adjustment (Gtk.Adjustment) – a Gtk.Adjustment to replace the existing adjustment

Replaces the Gtk.Adjustment associated with self.

set_digits(digits)[source]¶

Parameters:: digits (int) – the number of digits after the decimal point to be displayed for the spin button’s value

Set the precision to be displayed by self. Up to 20 digit precision is allowed.

set_increments(step, page)[source]¶

Parameters:

step (float) – increment applied for a button 1 press.
page (float) – increment applied for a button 2 press.

Sets the step and page increments for spin_button. This affects how quickly the value changes when the spin button’s arrows are activated.

set_numeric(numeric)[source]¶

Parameters:: numeric (bool) – flag indicating if only numeric entry is allowed

Sets the flag that determines if non-numeric text can be typed into the spin button.

set_range(min, max)[source]¶

Parameters:

min (float) – minimum allowable value
max (float) – maximum allowable value

Sets the minimum and maximum allowable values for self.

If the current value is outside this range, it will be adjusted to fit within the range, otherwise it will remain unchanged.

set_snap_to_ticks(snap_to_ticks)[source]¶

Parameters:: snap_to_ticks (bool) – a flag indicating if invalid values should be corrected

Sets the policy as to whether values are corrected to the nearest step increment when a spin button is activated after providing an invalid value.

set_update_policy(policy)[source]¶

Parameters:: policy (Gtk.SpinButtonUpdatePolicy) – a Gtk.SpinButtonUpdatePolicy value

Sets the update behavior of a spin button. This determines whether the spin button is always updated or only when a valid value is set.

set_value(value)[source]¶

Parameters:: value (float) – the new value

Sets the value of self.

set_wrap(wrap)[source]¶

Parameters:: wrap (bool) – a flag indicating if wrapping behavior is performed

Sets the flag that determines if a spin button value wraps around to the opposite limit when the upper or lower limit of the range is exceeded.

spin(direction, increment)[source]¶

Parameters:

direction (Gtk.SpinType) – a Gtk.SpinType indicating the direction to spin
increment (float) – step increment to apply in the specified direction

Increment or decrement a spin button’s value in a specified direction by a specified amount.

update()[source]¶: Manually force an update of the spin button.

do_change_value(scroll) virtual¶

Parameters:: scroll (Gtk.ScrollType) –

do_input(new_value) virtual¶

Parameters:: new_value (float) –
Return type:: int

do_output() virtual¶

Return type:: int

do_value_changed() virtual¶

do_wrapped() virtual¶

Signal Details¶

Gtk.SpinButton.signals.change_value(spin_button, scroll)¶

Signal Name:

change-value

Flags:

RUN_LAST, ACTION

Parameters:

spin_button (Gtk.SpinButton) – The object which received the signal
scroll (Gtk.ScrollType) – a Gtk.ScrollType to specify the speed and amount of change

The ::change-value signal is a keybinding signal which gets emitted when the user initiates a value change.

Applications should not connect to it, but may emit it with g_signal_emit_by_name() if they need to control the cursor programmatically.

The default bindings for this signal are Up/Down and PageUp and/PageDown.

Gtk.SpinButton.signals.input(spin_button)¶

Signal Name:

input

Flags:

RUN_LAST

Parameters:

spin_button (Gtk.SpinButton) – The object which received the signal

Returns:

True for a successful conversion, False if the input was not handled, and Gtk.INPUT_ERROR if the conversion failed.

new_value:: return location for the new value

Return type:

(int, new_value: float)

The ::input signal can be used to influence the conversion of the users input into a double value. The signal handler is expected to use Gtk.Entry.get_text() to retrieve the text of the entry and set new_value to the new value.

The default conversion uses GLib.strtod().

Gtk.SpinButton.signals.output(spin_button)¶

Signal Name:: output
Flags:: RUN_LAST
Parameters:: spin_button (Gtk.SpinButton) – The object which received the signal
Returns:: True if the value has been displayed
Return type:: bool

The ::output signal can be used to change to formatting of the value that is displayed in the spin buttons entry.

// show leading zeros
static gboolean
on_output (GtkSpinButton *spin,
           gpointer       data)
{
   GtkAdjustment *adjustment;
   gchar *text;
   int value;

   adjustment = gtk_spin_button_get_adjustment (spin);
   value = (int)gtk_adjustment_get_value (adjustment);
   text = g_strdup_printf ("%02d", value);
   gtk_entry_set_text (GTK_ENTRY (spin), text);
   g_free (text);

   return TRUE;
}

Gtk.SpinButton.signals.value_changed(spin_button)¶

Signal Name:: value-changed
Flags:: RUN_LAST
Parameters:: spin_button (Gtk.SpinButton) – The object which received the signal

The ::value-changed signal is emitted when the value represented by spinbutton changes. Also see the Gtk.SpinButton ::output signal.

Gtk.SpinButton.signals.wrapped(spin_button)¶

Signal Name:: wrapped
Flags:: RUN_LAST
Parameters:: spin_button (Gtk.SpinButton) – The object which received the signal

The ::wrapped signal is emitted right after the spinbutton wraps from its maximum to minimum value or vice-versa.

New in version 2.10.

Property Details¶

Gtk.SpinButton.props.adjustment¶

Name:: adjustment
Type:: Gtk.Adjustment
Default Value:: None
Flags:: READABLE, WRITABLE

The adjustment that holds the value of the spin button

Gtk.SpinButton.props.climb_rate¶

Name:: climb-rate
Type:: float
Default Value:: 0.0
Flags:: READABLE, WRITABLE, EXPLICIT_NOTIFY

The acceleration rate when you hold down a button or key

Gtk.SpinButton.props.digits¶

Name:: digits
Type:: int
Default Value:: 0
Flags:: READABLE, WRITABLE, EXPLICIT_NOTIFY

The number of decimal places to display

Gtk.SpinButton.props.numeric¶

Name:: numeric
Type:: bool
Default Value:: False
Flags:: READABLE, WRITABLE, EXPLICIT_NOTIFY

Whether non-numeric characters should be ignored

Gtk.SpinButton.props.snap_to_ticks¶

Name:: snap-to-ticks
Type:: bool
Default Value:: False
Flags:: READABLE, WRITABLE, EXPLICIT_NOTIFY

Whether erroneous values are automatically changed to a spin button’s nearest step increment

Gtk.SpinButton.props.update_policy¶

Name:: update-policy
Type:: Gtk.SpinButtonUpdatePolicy
Default Value:: Gtk.SpinButtonUpdatePolicy.ALWAYS
Flags:: READABLE, WRITABLE, EXPLICIT_NOTIFY

Whether the spin button should update always, or only when the value is legal

Gtk.SpinButton.props.value¶

Name:: value
Type:: float
Default Value:: 0.0
Flags:: READABLE, WRITABLE, EXPLICIT_NOTIFY

Reads the current value, or sets a new value

Gtk.SpinButton.props.wrap¶

Name:: wrap
Type:: bool
Default Value:: False
Flags:: READABLE, WRITABLE, EXPLICIT_NOTIFY

Whether a spin button should wrap upon reaching its limits