gtk.scale

Module for [Scale] class

class Scale ScaleGidBuilder ScaleGidBuilderImpl

Types 3

A [gtk.scale.Scale] is a slider control used to select a numeric value.

To use it, you’ll probably want to investigate the methods on its base class, [gtk.range.Range], in addition to the methods for [gtk.scale.Scale] itself. To set the value of a scale, you would normally use [gtk.range.Range.setValue]. To detect changes to the value, you would normally use the signal@Gtk.Range::value-changed signal.

Note that using the same upper and lower bounds for the [gtk.scale.Scale] (through the [gtk.range.Range] methods) will hide the slider itself. This is useful for applications that want to show an undeterminate value on the scale, without changing the layout of the application (such as movie or music players).

GtkScale as GtkBuildable

[gtk.scale.Scale] supports a custom <marks> element, which can contain multiple <mark\> elements. The “value” and “position” attributes have the same meaning as [gtk.scale.Scale.addMark] parameters of the same name. If the element is not empty, its content is taken as the markup to show at the mark. It can be translated with the usual ”translatable” and “context” attributes.

CSS nodes

scale[.fine-tune][.marks-before][.marks-after]
├── [value][.top][.right][.bottom][.left]
├── marks.top
│   ├── mark
│   ┊    ├── [label]
│   ┊    ╰── indicator
┊   ┊
│   ╰── mark
├── marks.bottom
│   ├── mark
│   ┊    ├── indicator
│   ┊    ╰── [label]
┊   ┊
│   ╰── mark
╰── trough
   ├── [fill]
   ├── [highlight]
   ╰── slider

[gtk.scale.Scale] has a main CSS node with name scale and a subnode for its contents, with subnodes named trough and slider.

The main node gets the style class .fine-tune added when the scale is in 'fine-tuning' mode.

If the scale has an origin (see [gtk.scale.Scale.setHasOrigin]), there is a subnode with name highlight below the trough node that is used for rendering the highlighted part of the trough.

If the scale is showing a fill level (see [gtk.range.Range.setShowFillLevel]), there is a subnode with name fill below the trough node that is used for rendering the filled in part of the trough.

If marks are present, there is a marks subnode before or after the trough node, below which each mark gets a node with name mark. The marks nodes get either the .top or .bottom style class.

The mark node has a subnode named indicator. If the mark has text, it also has a subnode named label. When the mark is either above or left of the scale, the label subnode is the first when present. Otherwise, the indicator subnode is the first.

The main CSS node gets the 'marks-before' and/or 'marks-after' style classes added depending on what marks are present.

If the scale is displaying the value (see property@Gtk.Scale:draw-value), there is subnode with name value. This node will get the .top or .bottom style classes similar to the marks node.

Accessibility

[gtk.scale.Scale] uses the [gtk.types.AccessibleRole.Slider] role.

Methods

GType _getGType()

GType _gType() @property

Scale self()Returns `this`, for use in `with` statements.

ScaleGidBuilder builder()Get builder for [gtk.scale.Scale] Returns: New builder object

int digits() @propertyGet `digits` property. Returns: The number of decimal places that are displayed in the value.

void digits(int propval) @propertySet `digits` property. Params: propval = The number of decimal places that are displayed in the value.

bool drawValue() @propertyGet `drawValue` property. Returns: Whether the current value is displayed as a string next to the slider.

void drawValue(bool propval) @propertySet `drawValue` property. Params: propval = Whether the current value is displayed as a string next to the slider.

bool hasOrigin() @propertyGet `hasOrigin` property. Returns: Whether the scale has an origin.

void hasOrigin(bool propval) @propertySet `hasOrigin` property. Params: propval = Whether the scale has an origin.

gtk.types.PositionType valuePos() @propertyGet `valuePos` property. Returns: The position in which the current value is displayed.

void valuePos(gtk.types.PositionType propval) @propertySet `valuePos` property. Params: propval = The position in which the current value is displayed.

gtk.scale.Scale newWithRange(gtk.types.Orientation orientation, double min, double max, double step)Creates a new scale widget with a range from min to max.

void addMark(double value, gtk.types.PositionType position, string markup = null)Adds a mark at value.

void clearMarks()Removes any marks that have been added.

int getDigits()Gets the number of decimal places that are displayed in the value. Returns: the number of decimal places that are displayed

bool getDrawValue()Returns whether the current value is displayed as a string next to the slider. Returns: whether the current value is displayed as a string

bool getHasOrigin()Returns whether the scale has an origin. Returns: true if the scale has an origin.

pango.layout.Layout getLayout()Gets the [pango.layout.Layout] used to display the scale.

void getLayoutOffsets(out int x, out int y)Obtains the coordinates where the scale will draw the [pango.layout.Layout] representing the text in the scale.

gtk.types.PositionType getValuePos()Gets the position in which the current value is displayed. Returns: the position in which the current value is displayed

void setDigits(int digits)Sets the number of decimal places that are displayed in the value.

void setDrawValue(bool drawValue)Specifies whether the current value is displayed as a string next to the slider.

void setFormatValueFunc(gtk.types.ScaleFormatValueFunc func = null)func allows you to change how the scale value is displayed.

void setHasOrigin(bool hasOrigin)Sets whether the scale has an origin.

void setValuePos(gtk.types.PositionType pos)Sets the position in which the current value is displayed.

Constructors

this(void * ptr, Flag!"Take" take)

this(gtk.types.Orientation orientation, gtk.adjustment.Adjustment adjustment = null)Creates a new [gtk.scale.Scale].

classScaleGidBuilderImpl(T) : gtk.range.RangeGidBuilderImpl!T

Methods

T digits(int propval)Set `digits` property. Params: propval = The number of decimal places that are displayed in the value. Returns: Builder instance for fluent chaining

T drawValue(bool propval)Set `drawValue` property. Params: propval = Whether the current value is displayed as a string next to the slider. Returns: Builder instance for fluent chaining

T hasOrigin(bool propval)Set `hasOrigin` property. Params: propval = Whether the scale has an origin. Returns: Builder instance for fluent chaining

T valuePos(gtk.types.PositionType propval)Set `valuePos` property. Params: propval = The position in which the current value is displayed. Returns: Builder instance for fluent chaining

classScaleGidBuilder : ScaleGidBuilderImpl!ScaleGidBuilder

Fluent builder for [gtk.scale.Scale]

Methods

Scale build()