GI.Gtk.Objects.SpinButton

A GtkSpinButton 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 GtkEntry, GtkSpinButton 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 GtkSpinButton are through an adjustment. See the Adjustment documentation for more details about an adjustment's properties.

Note that GtkSpinButton will by default make its entry large enough to accommodate the lower and upper bounds of the adjustment. If this is not desired, the automatic sizing can be turned off by explicitly setting Editable:width-chars to a value != -1.

Using a GtkSpinButton to get an integer

c code

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

int
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 ();

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

  gtk_window_present (GTK_WINDOW (window));
}

Using a GtkSpinButton to get a floating point value

c code

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

float
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 ();

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

  gtk_window_present (GTK_WINDOW (window));
}

CSS nodes

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

spinbutton.vertical
├── button.up
├── text
│    ├── undershoot.left
│    ╰── undershoot.right
╰── 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 GtkText subnodes (if present) are put below the text node. The orientation of the spin button is reflected in the .vertical or .horizontal style class on the main node.

Accessibility

GtkSpinButton uses the AccessibleRoleSpinButton role.

Exported types

newtype SpinButton

Memory-managed wrapper type.

Constructors

SpinButton (ManagedPtr SpinButton)

Instances

Eq SpinButton

Defined in GI.Gtk.Objects.SpinButton

Methods

(==) :: SpinButton -> SpinButton -> Bool

(/=) :: SpinButton -> SpinButton -> Bool

GObject SpinButton

Defined in GI.Gtk.Objects.SpinButton

ManagedPtrNewtype SpinButton

Defined in GI.Gtk.Objects.SpinButton

Methods

toManagedPtr :: SpinButton -> ManagedPtr SpinButton

TypedObject SpinButton

Defined in GI.Gtk.Objects.SpinButton

Methods

glibType :: IO GType

HasParentTypes SpinButton

Defined in GI.Gtk.Objects.SpinButton

IsGValue (Maybe SpinButton)

Convert SpinButton to and from GValue. See toGValue and fromGValue.

Defined in GI.Gtk.Objects.SpinButton

Methods

gvalueGType_ :: IO GType

gvalueSet_ :: Ptr GValue -> Maybe SpinButton -> IO ()

gvalueGet_ :: Ptr GValue -> IO (Maybe SpinButton)

type ParentTypes SpinButton

Defined in GI.Gtk.Objects.SpinButton

type ParentTypes SpinButton = '[Widget, Object, Accessible, AccessibleRange, Buildable, CellEditable, ConstraintTarget, Editable, Orientable]

class (GObject o, IsDescendantOf SpinButton o) => IsSpinButton o

Type class for types which can be safely cast to SpinButton, for instance with toSpinButton.

Instances

(GObject o, IsDescendantOf SpinButton o) => IsSpinButton o

Defined in GI.Gtk.Objects.SpinButton

toSpinButton :: (MonadIO m, IsSpinButton o) => o -> m SpinButton

Cast to SpinButton, for types for which this is known to be safe. For general casts, use castTo.

Methods

Click to display all available methods, including inherited ones

Methods

actionSetEnabled, activate, activateAction, activateDefault, addController, addCssClass, addMnemonicLabel, addTickCallback, allocate, bindProperty, bindPropertyFull, childFocus, computeBounds, computeExpand, computePoint, computeTransform, configure, contains, createPangoContext, createPangoLayout, delegateGetAccessiblePlatformState, deleteSelection, deleteText, disposeTemplate, dragCheckThreshold, editingDone, errorBell, finishDelegate, forceFloating, freezeNotify, getv, grabFocus, hasCssClass, hasDefault, hasFocus, hasVisibleFocus, hide, inDestruction, initDelegate, initTemplate, insertActionGroup, insertAfter, insertBefore, insertText, isAncestor, isDrawable, isFloating, isFocus, isSensitive, isVisible, keynavFailed, listMnemonicLabels, map, measure, mnemonicActivate, notify, notifyByPspec, observeChildren, observeControllers, pick, queueAllocate, queueDraw, queueResize, realize, ref, refSink, removeController, removeCssClass, removeMnemonicLabel, removeTickCallback, removeWidget, resetProperty, resetRelation, resetState, runDispose, selectRegion, shouldLayout, show, sizeAllocate, snapshotChild, spin, startEditing, stealData, stealQdata, thawNotify, translateCoordinates, triggerTooltipQuery, unmap, unparent, unrealize, unref, unsetStateFlags, update, updateNextAccessibleSibling, updateProperty, updateRelation, updateState, watchClosure.

Getters

getAccessibleParent, getAccessibleRole, getAdjustment, getAlignment, getAllocatedBaseline, getAllocatedHeight, getAllocatedWidth, getAllocation, getAncestor, getAtContext, getBounds, getBuildableId, getCanFocus, getCanTarget, getChars, getChildVisible, getClimbRate, getClipboard, getColor, getCssClasses, getCssName, getCursor, getData, getDelegate, getDigits, getDirection, getDisplay, getEditable, getEnableUndo, getFirstAccessibleChild, getFirstChild, getFocusChild, getFocusOnClick, getFocusable, getFontMap, getFontOptions, getFrameClock, getHalign, getHasTooltip, getHeight, getHexpand, getHexpandSet, getIncrements, getLastChild, getLayoutManager, getMapped, getMarginBottom, getMarginEnd, getMarginStart, getMarginTop, getMaxWidthChars, getName, getNative, getNextAccessibleSibling, getNextSibling, getNumeric, getOpacity, getOrientation, getOverflow, getPangoContext, getParent, getPlatformState, getPosition, getPreferredSize, getPrevSibling, getPrimaryClipboard, getProperty, getQdata, getRange, getRealized, getReceivesDefault, getRequestMode, getRoot, getScaleFactor, getSelectionBounds, getSensitive, getSettings, getSize, getSizeRequest, getSnapToTicks, getStateFlags, getStyleContext, getTemplateChild, getText, getTooltipMarkup, getTooltipText, getUpdatePolicy, getValign, getValue, getValueAsInt, getVexpand, getVexpandSet, getVisible, getWidth, getWidthChars, getWrap.

Setters

setAccessibleParent, setAdjustment, setAlignment, setCanFocus, setCanTarget, setChildVisible, setClimbRate, setCssClasses, setCursor, setCursorFromName, setData, setDataFull, setDigits, setDirection, setEditable, setEnableUndo, setFocusChild, setFocusOnClick, setFocusable, setFontMap, setFontOptions, setHalign, setHasTooltip, setHexpand, setHexpandSet, setIncrements, setLayoutManager, setMarginBottom, setMarginEnd, setMarginStart, setMarginTop, setMaxWidthChars, setName, setNumeric, setOpacity, setOrientation, setOverflow, setParent, setPosition, setProperty, setRange, setReceivesDefault, setSensitive, setSizeRequest, setSnapToTicks, setStateFlags, setText, setTooltipMarkup, setTooltipText, setUpdatePolicy, setValign, setValue, setVexpand, setVexpandSet, setVisible, setWidthChars, setWrap.

configure

spinButtonConfigure

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a, IsAdjustment b)

=> a

spinButton: a GtkSpinButton

-> Maybe b

adjustment: a GtkAdjustment to replace the spin button’s existing adjustment, or Nothing to leave its current adjustment unchanged

-> Double

climbRate: the new climb rate

-> Word32

digits: the number of decimal places to display in the spin button

-> m ()

Changes the properties of an existing spin button.

The adjustment, climb rate, and number of decimal places are updated accordingly.

getAdjustment

spinButtonGetAdjustment

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Adjustment

Returns: the GtkAdjustment of spinButton

Get the adjustment associated with a GtkSpinButton.

getClimbRate

spinButtonGetClimbRate

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Double

Returns: the acceleration rate

Returns the acceleration rate for repeated changes.

getDigits

spinButtonGetDigits

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Word32

Returns: the current precision

Fetches the precision of spinButton.

getIncrements

spinButtonGetIncrements

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m (Double, Double)

Gets the current step and page the increments used by spinButton.

See spinButtonSetIncrements.

getNumeric

spinButtonGetNumeric

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Bool

Returns: True if only numeric text can be entered

Returns whether non-numeric text can be typed into the spin button.

getRange

spinButtonGetRange

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m (Double, Double)

Gets the range allowed for spinButton.

See spinButtonSetRange.

getSnapToTicks

spinButtonGetSnapToTicks

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Bool

Returns: True if values are snapped to the nearest step

Returns whether the values are corrected to the nearest step.

getUpdatePolicy

spinButtonGetUpdatePolicy

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m SpinButtonUpdatePolicy

Returns: the current update policy

Gets the update behavior of a spin button.

See spinButtonSetUpdatePolicy.

getValue

spinButtonGetValue

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Double

Returns: the value of spinButton

Get the value in the spinButton.

getValueAsInt

spinButtonGetValueAsInt

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Int32

Returns: the value of spinButton

Get the value spinButton represented as an integer.

getWrap

spinButtonGetWrap

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m Bool

Returns: True if the spin button wraps around

Returns whether the spin button’s value wraps around to the opposite limit when the upper or lower limit of the range is exceeded.

new

spinButtonNew

Arguments

:: (HasCallStack, MonadIO m, IsAdjustment a)

=> Maybe a

adjustment: the GtkAdjustment that this spin button should use

-> Double

climbRate: 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

-> Word32

digits: the number of decimal places to display

-> m SpinButton

Returns: The new GtkSpinButton

Creates a new GtkSpinButton.

newWithRange

spinButtonNewWithRange

Arguments

:: (HasCallStack, MonadIO m)

=> Double

min: Minimum allowable value

-> Double

max: Maximum allowable value

-> Double

step: Increment added or subtracted by spinning the widget

-> m SpinButton

Returns: The new GtkSpinButton

Creates a new GtkSpinButton with the given properties.

This is a convenience constructor that allows creation of a numeric GtkSpinButton 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 spinButtonSetDigits to correct it.

setAdjustment

spinButtonSetAdjustment

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a, IsAdjustment b)

=> a

spinButton: a GtkSpinButton

-> b

adjustment: a GtkAdjustment to replace the existing adjustment

-> m ()

Replaces the GtkAdjustment associated with spinButton.

setClimbRate

spinButtonSetClimbRate

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Double

climbRate: the rate of acceleration, must be >= 0

-> m ()

Sets the acceleration rate for repeated changes when you hold down a button or key.

setDigits

spinButtonSetDigits

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Word32

digits: the number of digits after the decimal point to be displayed for the spin button’s value

-> m ()

Set the precision to be displayed by spinButton.

Up to 20 digit precision is allowed.

setIncrements

spinButtonSetIncrements

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Double

step: increment applied for a button 1 press.

-> Double

page: increment applied for a button 2 press.

-> m ()

Sets the step and page increments for spin_button.

This affects how quickly the value changes when the spin button’s arrows are activated.

setNumeric

spinButtonSetNumeric

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Bool

numeric: flag indicating if only numeric entry is allowed

-> m ()

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

setRange

spinButtonSetRange

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Double

min: minimum allowable value

-> Double

max: maximum allowable value

-> m ()

Sets the minimum and maximum allowable values for spinButton.

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

setSnapToTicks

spinButtonSetSnapToTicks

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Bool

snapToTicks: a flag indicating if invalid values should be corrected

-> m ()

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.

setUpdatePolicy

spinButtonSetUpdatePolicy

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> SpinButtonUpdatePolicy

policy: a GtkSpinButtonUpdatePolicy value

-> m ()

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.

setValue

spinButtonSetValue

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Double

value: the new value

-> m ()

Sets the value of spinButton.

setWrap

spinButtonSetWrap

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> Bool

wrap: a flag indicating if wrapping behavior is performed

-> m ()

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

spinButtonSpin

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> SpinType

direction: a GtkSpinType indicating the direction to spin

-> Double

increment: step increment to apply in the specified direction

-> m ()

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

update

spinButtonUpdate

Arguments

:: (HasCallStack, MonadIO m, IsSpinButton a)

=> a

spinButton: a GtkSpinButton

-> m ()

Manually force an update of the spin button.

Properties

adjustment

The adjustment that holds the value of the spin button.

constructSpinButtonAdjustment :: (IsSpinButton o, MonadIO m, IsAdjustment a) => a -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “adjustment” property. This is rarely needed directly, but it is used by new.

getSpinButtonAdjustment :: (MonadIO m, IsSpinButton o) => o -> m Adjustment

Get the value of the “adjustment” property. When overloading is enabled, this is equivalent to

get spinButton #adjustment

setSpinButtonAdjustment :: (MonadIO m, IsSpinButton o, IsAdjustment a) => o -> a -> m ()

Set the value of the “adjustment” property. When overloading is enabled, this is equivalent to

set spinButton [ #adjustment := value ]

climbRate

The acceleration rate when you hold down a button or key.

constructSpinButtonClimbRate :: (IsSpinButton o, MonadIO m) => Double -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “climb-rate” property. This is rarely needed directly, but it is used by new.

getSpinButtonClimbRate :: (MonadIO m, IsSpinButton o) => o -> m Double

Get the value of the “climb-rate” property. When overloading is enabled, this is equivalent to

get spinButton #climbRate

setSpinButtonClimbRate :: (MonadIO m, IsSpinButton o) => o -> Double -> m ()

Set the value of the “climb-rate” property. When overloading is enabled, this is equivalent to

set spinButton [ #climbRate := value ]

digits

The number of decimal places to display.

constructSpinButtonDigits :: (IsSpinButton o, MonadIO m) => Word32 -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “digits” property. This is rarely needed directly, but it is used by new.

getSpinButtonDigits :: (MonadIO m, IsSpinButton o) => o -> m Word32

Get the value of the “digits” property. When overloading is enabled, this is equivalent to

get spinButton #digits

setSpinButtonDigits :: (MonadIO m, IsSpinButton o) => o -> Word32 -> m ()

Set the value of the “digits” property. When overloading is enabled, this is equivalent to

set spinButton [ #digits := value ]

numeric

Whether non-numeric characters should be ignored.

constructSpinButtonNumeric :: (IsSpinButton o, MonadIO m) => Bool -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “numeric” property. This is rarely needed directly, but it is used by new.

getSpinButtonNumeric :: (MonadIO m, IsSpinButton o) => o -> m Bool

Get the value of the “numeric” property. When overloading is enabled, this is equivalent to

get spinButton #numeric

setSpinButtonNumeric :: (MonadIO m, IsSpinButton o) => o -> Bool -> m ()

Set the value of the “numeric” property. When overloading is enabled, this is equivalent to

set spinButton [ #numeric := value ]

snapToTicks

Whether erroneous values are automatically changed to the spin buttons nearest step increment.

constructSpinButtonSnapToTicks :: (IsSpinButton o, MonadIO m) => Bool -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “snap-to-ticks” property. This is rarely needed directly, but it is used by new.

getSpinButtonSnapToTicks :: (MonadIO m, IsSpinButton o) => o -> m Bool

Get the value of the “snap-to-ticks” property. When overloading is enabled, this is equivalent to

get spinButton #snapToTicks

setSpinButtonSnapToTicks :: (MonadIO m, IsSpinButton o) => o -> Bool -> m ()

Set the value of the “snap-to-ticks” property. When overloading is enabled, this is equivalent to

set spinButton [ #snapToTicks := value ]

updatePolicy

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

constructSpinButtonUpdatePolicy :: (IsSpinButton o, MonadIO m) => SpinButtonUpdatePolicy -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “update-policy” property. This is rarely needed directly, but it is used by new.

getSpinButtonUpdatePolicy :: (MonadIO m, IsSpinButton o) => o -> m SpinButtonUpdatePolicy

Get the value of the “update-policy” property. When overloading is enabled, this is equivalent to

get spinButton #updatePolicy

setSpinButtonUpdatePolicy :: (MonadIO m, IsSpinButton o) => o -> SpinButtonUpdatePolicy -> m ()

Set the value of the “update-policy” property. When overloading is enabled, this is equivalent to

set spinButton [ #updatePolicy := value ]

value

The current value.

constructSpinButtonValue :: (IsSpinButton o, MonadIO m) => Double -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “value” property. This is rarely needed directly, but it is used by new.

getSpinButtonValue :: (MonadIO m, IsSpinButton o) => o -> m Double

Get the value of the “value” property. When overloading is enabled, this is equivalent to

get spinButton #value

setSpinButtonValue :: (MonadIO m, IsSpinButton o) => o -> Double -> m ()

Set the value of the “value” property. When overloading is enabled, this is equivalent to

set spinButton [ #value := value ]

wrap

Whether a spin button should wrap upon reaching its limits.

constructSpinButtonWrap :: (IsSpinButton o, MonadIO m) => Bool -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “wrap” property. This is rarely needed directly, but it is used by new.

getSpinButtonWrap :: (MonadIO m, IsSpinButton o) => o -> m Bool

Get the value of the “wrap” property. When overloading is enabled, this is equivalent to

get spinButton #wrap

setSpinButtonWrap :: (MonadIO m, IsSpinButton o) => o -> Bool -> m ()

Set the value of the “wrap” property. When overloading is enabled, this is equivalent to

set spinButton [ #wrap := value ]

Signals

changeValue

type SpinButtonChangeValueCallback

Arguments

 = ScrollType

scroll: a GtkScrollType to specify the speed and amount of change

-> IO ()

Emitted when the user initiates a value change.

This is a keybinding signal.

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/PageDown.

afterSpinButtonChangeValue :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonChangeValueCallback) -> m SignalHandlerId

Connect a signal handler for the changeValue signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after spinButton #changeValue callback

By default the object invoking the signal is not passed to the callback. If you need to access it, you can use the implit ?self parameter. Note that this requires activating the ImplicitParams GHC extension.

onSpinButtonChangeValue :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonChangeValueCallback) -> m SignalHandlerId

Connect a signal handler for the changeValue signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on spinButton #changeValue callback

input

type SpinButtonInputCallback

Arguments

 = IO (Int32, Double)

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

Emitted to convert the users input into a double value.

The signal handler is expected to use editableGetText to retrieve the text of the spinbutton and set newValue to the new value.

The default conversion uses strtod.

afterSpinButtonInput :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonInputCallback) -> m SignalHandlerId

Connect a signal handler for the input signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after spinButton #input callback

By default the object invoking the signal is not passed to the callback. If you need to access it, you can use the implit ?self parameter. Note that this requires activating the ImplicitParams GHC extension.

onSpinButtonInput :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonInputCallback) -> m SignalHandlerId

Connect a signal handler for the input signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on spinButton #input callback

output

type SpinButtonOutputCallback

Arguments

 = IO Bool

Returns: True if the value has been displayed

Emitted to tweak the formatting of the value for display.

c code

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

   adjustment = gtk_spin_button_get_adjustment (spin);
   value = (int)gtk_adjustment_get_value (adjustment);
   text = g_strdup_printf ("%02d", value);
   gtk_editable_set_text (GTK_EDITABLE (spin), text):
   g_free (text);

   return TRUE;
}

afterSpinButtonOutput :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonOutputCallback) -> m SignalHandlerId

Connect a signal handler for the output signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after spinButton #output callback

By default the object invoking the signal is not passed to the callback. If you need to access it, you can use the implit ?self parameter. Note that this requires activating the ImplicitParams GHC extension.

onSpinButtonOutput :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonOutputCallback) -> m SignalHandlerId

Connect a signal handler for the output signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on spinButton #output callback

valueChanged

type SpinButtonValueChangedCallback = IO ()

Emitted when the value is changed.

Also see the SpinButton::output signal.

afterSpinButtonValueChanged :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonValueChangedCallback) -> m SignalHandlerId

Connect a signal handler for the valueChanged signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after spinButton #valueChanged callback

By default the object invoking the signal is not passed to the callback. If you need to access it, you can use the implit ?self parameter. Note that this requires activating the ImplicitParams GHC extension.

onSpinButtonValueChanged :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonValueChangedCallback) -> m SignalHandlerId

Connect a signal handler for the valueChanged signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on spinButton #valueChanged callback

wrapped

type SpinButtonWrappedCallback = IO ()

Emitted right after the spinbutton wraps from its maximum to its minimum value or vice-versa.

afterSpinButtonWrapped :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonWrappedCallback) -> m SignalHandlerId

Connect a signal handler for the wrapped signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after spinButton #wrapped callback

By default the object invoking the signal is not passed to the callback. If you need to access it, you can use the implit ?self parameter. Note that this requires activating the ImplicitParams GHC extension.

onSpinButtonWrapped :: (IsSpinButton a, MonadIO m) => a -> ((?self :: a) => SpinButtonWrappedCallback) -> m SignalHandlerId

Connect a signal handler for the wrapped signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on spinButton #wrapped callback