GanttTaskAreaPainter class

Inheritance

Constructors

GanttTaskAreaPainter({required List<GanttTask> tasks, required DateTime viewStartDate, required int daysToShow, required GanttViewMode viewMode, required DateTime today, String? draggedTaskId, String? drawDependencyFromTaskId, String? reorderingTaskId, String? hoveredTaskId, GanttStyleConfig? style})

Properties

daysToShow → int
final
draggedTaskId → String?
final
drawDependencyFromTaskId → String?
final
gridStartX ↔ double
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
hoveredTaskId → String?
final
reorderingTaskId → String?
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticsBuilder → SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
no setterinherited
style → GanttStyleConfig
final
tasks → List<GanttTask>
final
today → DateTime
final
viewMode → GanttViewMode
final
viewStartDate → DateTime
final

Methods

addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
calculateDayWidth(double totalWidth) → double
Calculates the width of a single day column based on the total available width. Returns 0 if calculation is not possible.
calculateDependencyPaths(double canvasWidth, double canvasHeight) → void
Calculates and caches the Paths for dependency lines between visible tasks. Requires calculateTaskRects to be called first. Path coordinates are relative to the top-left of this painter's canvas.
calculateTaskRects(double canvasWidth, double canvasHeight) → void
Calculates and caches the screen rectangles and handle positions for all visible tasks. Coordinates are relative to the top-left of this painter's canvas.
configurePaints() → void
findTappedDependency(Offset tapPosition) → GanttTask?
Finds the target task of a dependency line that is close to the given tap position. Returns the target GanttTask if found, otherwise null. Requires calculateDependencyPaths to have been called.
hitTest(Offset position) → bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
isTaskOverdue(GanttTask task) → bool
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paint(Canvas canvas, Size size) → void
Called whenever the object needs to paint. The given Canvas has its coordinate space configured such that the origin is at the top left of the box. The area of the box is the size of the size argument.
override
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies when it is time to repaint.
inherited
shouldRebuildSemantics(covariant CustomPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
inherited
shouldRepaint(covariant GanttTaskAreaPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
toString() → String
A string representation of this object.
inherited

Operators

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