LineTool class

Spec 05 D6: AutoCAD's LINE. Each click commits one segment, and its end is the next segment's start: the same stored values. Fill does not apply.

Inheritance

Constructors

LineTool()

Properties

acceptingSelf ↔ bool
True only while accept runs on a self-snap's stored point (Ruling 05-4).
getter/setter pairinherited
band → Path
Spec 05 D12: reset each frame, never reallocated. bandPaint's colour and width are set by paintWorldOverlay before it calls paintRubberBand (dark theme spec D5).
finalinherited
bandPaint → Paint
finalinherited
cursor → MouseCursor
The pointer's cursor over the layer (spec 03 D5). InteractionLayer rebuilds its MouseRegion when the tool notifies.
no setterinherited
fill → ValueListenable<bool>?
Spec 05 D13: the shell's Fill toggle. Null, or false: outlines only.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
hoverKind → SnapKind?
no setterinherited
hoverPoint → Vector2
no setterinherited
hoverVisible → bool
no setterinherited
isMidShape → bool
Spec 12a D6: a point placed and the shape not yet finished. The paths that change points here (onPointerDown, Enter and Escape in onKey, cancel) each notify.
no setterinherited
isPending → bool
no setterinherited
markerPoint → Vector2
Where paintOverlay draws the snap marker: the resolved hover point. A tool that places its shape somewhere derived from that point overrides it (spec 08 D15, Ruling 08-14: an opening tool marks the point projected onto its host's centreline). Read per frame: an override returns a stored point and allocates nothing.
no setterinherited
name → String
no setteroverride
orthoBase → Vector2?
Spec 05 D4: the last placed point, or none.
no setterinherited
phase → ToolPhase
no setterinherited
points → List<Vector2>
The placed points, as exact world values (invariant 1).
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selectionPreviewTransform → Transform2?
The world transform a live move or rotate would apply, for the overlay's preview (spec 03 D7); null otherwise.
no setterinherited
touchPress → TouchPress
How a finger's press reaches this tool (spec 14t R-1). TouchPress.lift unless the tool's down and its cancel execute nothing.
no setterinherited

Methods

accept(Vector2 point, ToolContext ctx) → void
override
addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
cancel(ToolContext ctx) → void
Every cancel path (Escape, ToolController.activate, the layer's deactivate and dispose) drops the pending shape and never touches the document (invariant 3).
inherited
clearShape() → void
override
commit(ToolContext ctx, DraftCommand build(), {Set<Capability> needs = const {Capability.geometry}}) → bool
Ruling 05-3: the permission check runs before build, so a denied shape allocates no handle. needs is every capability the built command will need (spec 06 D13, Ruling 06-10); 05's shapes need geometry alone. Returns whether the command ran.
inherited
commitShape(ToolContext ctx, EntityKind kind, GeometryPayload payload, {bool fillable = false}) → bool
Spec 05 D13: with Fill on and a fillable shape, one region when the boundary can fill, and the plain boundary when it cannot.
inherited
dispose() → void
Discards any resources used by the object.
inherited
finish(ToolContext ctx) → void
Enter while a shape is pending.
override
hovered(Vector2 raw) → void
Every hover's raw world point (the arc tracks it).
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
onKey(KeyEvent event, ToolContext ctx) → KeyEventResult
inherited
onPointerDown(ToolPointerEvent e, ToolContext ctx) → void
inherited
onPointerExit(ToolContext ctx) → void
The shape stays: placement is click by click, not a drag.
inherited
onPointerMove(ToolPointerEvent e, ToolContext ctx) → void
inherited
onPointerUp(ToolPointerEvent e, ToolContext ctx) → void
inherited
paintOverlay(Canvas canvas, ViewportTransform camera, Size viewport, PaperPalette paper) → void
Paints in screen space, after paintWorldOverlay. Every colour comes from paper, the overlay's own set for the paper under it (dark theme spec D5); none is kept in a field initialiser.
inherited
paintRubberBand(Canvas canvas, Vector2 origin, double scale) → void
Coordinates handed to canvas are world − origin (Ruling 03-3).
override
paintWorldOverlay(Canvas canvas, Vector2 origin, double scale, PaperPalette paper) → void
Paints under the overlay's rebased world matrix, worldToScreen ∘ translate(origin), so coordinates handed to canvas must be world − origin (Ruling 03-3). scale is the camera's, for stroke widths. Colours come from paper, as in paintOverlay.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
selfSnap(Vector2 raw, double apertureWorld) → Vector2?
The current start ends the chain, but only once a segment is committed (M-05x). Before that, a second click on the start is a zero-length segment and is refused.
override
toString() → String
A string representation of this object.
inherited

Operators

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