EventLayoutDelegate class abstract

The base MultiChildLayoutDelegate class for laying out CalendarEvents.

EventLayoutDelegates are used to layout CalendarEvents in a CustomMultiChildLayout.

The EventLayoutDelegate has some helper methods:

Inheritance
Implementers

Constructors

EventLayoutDelegate({required Iterable<CalendarEvent> events, required double heightPerMinute, required InternalDateTime date, required Location? location, required TimeOfDayRange timeOfDayRange, required double? minimumTileHeight, required EventLayoutDelegateCache layoutCache})

Properties

date → InternalDateTime
The date for which the events are laid out.
final
events → Iterable<CalendarEvent>
The list of events that will be laid out. (The order of these events are the same as the widget's)
final
hashCode → int
The hash code for this object.
no setterinherited
heightPerMinute → double
The height per minute of the current view.
final
layoutCache → EventLayoutDelegateCache
The cache for the EventLayoutDelegate.
final
location → Location?
The location for which the events are laid out.
final
minimumTileHeight → double?
The minimum height of a tile.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
timeOfDayRange → TimeOfDayRange
The time of day range for which the events are laid out.
final

Methods

calculateDistanceFromStart(CalendarEvent event) → double
Calculates the distance from the start of the day to the start of the event.
calculateHeight(CalendarEvent event) → double
Calculates the height of an item based on the CalendarEvent.duration and heightPerMinute of the event.
calculateVerticalLayoutData(Size size) → List<VerticalLayoutData>
Vertical layout of the events.
findLongestChain(Iterable<VerticalLayoutData> verticalLayoutData) → int
Finds the longest chain of overlapping events using depth-first search.
getSize(BoxConstraints constraints) → Size
Override this method to return the size of this object given the incoming constraints.
inherited
groupVerticalLayoutData(List<VerticalLayoutData> verticalLayoutData) → List<HorizontalGroupData>
Groups the VerticalLayoutData into horizontal groups.
hasChild(Object childId) → bool
True if a non-null LayoutChild was provided for the specified id.
inherited
layoutChild(Object childId, BoxConstraints constraints) → Size
Ask the child to update its layout within the limits specified by the constraints parameter. The child's size is returned.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
performLayout(Size size) → void
Override this method to lay out and position all children given this widget's size.
inherited
positionChild(Object childId, Offset offset) → void
Specify the child's origin relative to this origin.
inherited
shouldRelayout(covariant EventLayoutDelegate oldDelegate) → bool
Override this method to return true when the children need to be laid out.
override
sortEvents(Iterable<CalendarEvent> events) → List<CalendarEvent>
Sorts the CalendarEvents.
sortVerticalLayoutData(List<VerticalLayoutData> layoutData) → List<VerticalLayoutData>
This is used to sort the vertical layout data after calculation.
toString() → String
Override this method to include additional information in the debugging data printed by debugDumpRenderTree and friends.
inherited

Operators

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