SelectedItemDecoration class

Show selected item in Cupertino style (Health app)

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

Constructors

SelectedItemDecoration(int? selectedItem, {Color selectedColor = Colors.red, Color backgroundColor = Colors.grey, TextStyle selectedStyle = const TextStyle(fontSize: 13.0), bool animate = false, bool showText = true, bool showOnTop = true, int selectedListIndex = 0, Widget? child, double topMargin = 0.0})
Constructor for selected item decoration

Properties

animate → bool
Should selectedItem animate from one item to next
final
backgroundColor → Color
Color for selected item, this color is shown as overlay, use with alpha!
final
child → Widget?
Child to show on top or bottom of selected item
final
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selectedColor → Color
Color of selected indicator and text background
final
selectedItem → int?
Index of selected item
final
selectedListIndex → int
Index of list whose data to show By default it will use first list to this value will be 0
final
selectedStyle → TextStyle
Color of selected item text
final
showOnTop → bool
final
showText → bool
final
topMargin → double
final

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
override
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
override
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.
override
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
override
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