gtk.scale
Module for [Scale] class
Types 3
A GtkScale 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, #GtkRange, in addition to the methods for GtkScale 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 #GtkRange::value-changed signal.
Note that using the same upper and lower bounds for the #GtkScale (through the #GtkRange 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
GtkScale 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]
├── marks.top
│ ├── mark
│ ┊ ├── [label]
│ ┊ ╰── indicator
┊ ┊
│ ╰── mark
├── [value]
├── contents
│ ╰── trough
│ ├── slider
│ ├── [highlight]
│ ╰── [fill]
╰── marks.bottom
├── mark
┊ ├── indicator
┊ ╰── [label]
╰── markGtkScale 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 contents 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 #GtkScale:draw-value), there is subnode with name value.
ScaleGidBuilder builder()Get builder for [gtk.scale.Scale] Returns: New builder objectint digits() @propertyvoid digits(int propval) @propertybool drawValue() @propertyvoid drawValue(bool propval) @propertybool hasOrigin() @propertyvoid hasOrigin(bool propval) @propertygtk.types.PositionType valuePos() @propertyvoid valuePos(gtk.types.PositionType propval) @propertygtk.scale.Scale newWithRange(gtk.types.Orientation orientation, double min, double max, double step)Creates a new scale widget with the given orientation that lets the user input a number between min and max (including min and max) with the increment step. step must be nonzero; it’s the distan...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 with [gtk.scale.Scale.addMark].int getDigits()Gets the number of decimal places that are displayed in the value. Returns: the number of decimal places that are displayedbool getDrawValue()Returns whether the current value is displayed as a string next to the slider. Returns: whether the current value is displayed as a stringbool getHasOrigin()Returns whether the scale has an origin. Returns: true if the scale has an origin.pango.layout.Layout getLayout()Gets the #PangoLayout used to display the scale. The returned object is owned by the scale so does not need to be freed by the caller. Returns: the #PangoLayout for this scale, or null if the #GtkS...void getLayoutOffsets(out int x, out int y)Obtains the coordinates where the scale will draw the #PangoLayout representing the text in the scale. Remember when using the #PangoLayout function you need to convert to and from pixels using PAN...gtk.types.PositionType getValuePos()Gets the position in which the current value is displayed. Returns: the position in which the current value is displayedvoid setDigits(int digits)Sets the number of decimal places that are displayed in the value. Also causes the value of the adjustment to be rounded to this number of digits, so the retrieved value matches the displayed one, ...void setDrawValue(bool drawValue)Specifies whether the current value is displayed as a string next to the slider.void setHasOrigin(bool hasOrigin)If #GtkScale:has-origin is set to true (the default), the scale will highlight the part of the trough between the origin (bottom or left side) and the current value.void setValuePos(gtk.types.PositionType pos)Sets the position in which the current value is displayed.gulong connectFormatValue(T)(T callback, Flag!"After" after = No.After) if (isCallable!T
&& is(ReturnType!T == string)
&& (Parameters!T.length < 1 || (ParameterStorageClassTuple!T[0] == ParameterStorageClass.none && is(Parameters!T[0] == double)))
&& (Parameters!T.length < 2 || (ParameterStorageClassTuple!T[1] == ParameterStorageClass.none && is(Parameters!T[1] : gtk.scale.Scale)))
&& Parameters!T.length < 3)Connect to `FormatValue` signal.this(gtk.types.Orientation orientation, gtk.adjustment.Adjustment adjustment = null)Creates a new #GtkScale.T digits(int propval)T drawValue(bool propval)T hasOrigin(bool propval)T valuePos(gtk.types.PositionType propval)