TargetLineLegendDecoration class

Show text on the left side of the chart, this text will be at TargetLineDecoration or at max value of TargetAreaDecoration.

Text will be rotated 90 CCW

Inheritance
Annotations
  • @Deprecated('You can make this decoration and much more using WidgetDecoration. Check migration guide for more info')

Constructors

TargetLineLegendDecoration({required String legendDescription, required TextStyle legendStyle, double legendTarget = 0, EdgeInsets padding = EdgeInsets.zero})
Target line legend constructor

Properties

hashCode → int
The hash code for this object.
no setterinherited
legendDescription → String
Label to show at legendTarget
final
legendStyle → TextStyle
Legend text style
final
legendTarget → double
Target value where to show the label
final
padding → EdgeInsets
Label padding
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

animateTo(DecorationPainter endValue, double t) → DecorationPainter
Animate to next decoration state, each decoration should implement this. This is just regular lerp function, but instead of static function where you pass start and end state, here we start with current state and animate to endValue.
override
applyPaintTransform(ChartState state, Size size) → Offset
inherited
draw(Canvas canvas, Size size, ChartState state) → void
Draw decoration. Decoration can be foreground or background decoration that will be drawn on the chart decorations can ignore padding and can use whole available canvas to draw.
override
getRenderer(ChartState state) → Widget
inherited
initDecoration(ChartState state) → void
Init decoration is first thing called on decorations, it will pass current ChartState so decoration can easily calculate needed stuff for their layout.
inherited
isSameType(DecorationPainter other) → bool
Used for animating, we just need to find matching type, don't actually check for equality since we want to animate from one state to other. Some decorations may consider overriding this in case multiples are used
inherited
layoutSize(BoxConstraints constraints, ChartState state) → Size
inherited
marginNeeded() → EdgeInsets
Get extra margin (not definable by the user). This makes sure that any decoration that leaves original drawing window is not drawing outside of that window (This is not enforced right now but it's unwanted behaviour)
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paddingNeeded() → EdgeInsets
Get extra padding (not definable by user, calculated by decoration if needed). This makes sure that decoration will fit with the chart in wanted area.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited