BetterInteractiveViewerBase class abstract
A Base Class to build InteractiveViewer like widgets, with support for scrollbars, tap to zoom, better viewport sizing, etc.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- BetterInteractiveViewerBase
- Implementers
Constructors
- BetterInteractiveViewerBase({Key? key, bool allowNonCoveringScreenZoom = true, PanAxis panAxis = PanAxis.free, double maxScale = 2.5, double minScale = 0.2, double interactionEndFrictionCoefficient = _kDrag, bool panEnabled = true, bool scaleEnabled = true, bool showScrollbars = true, bool noMouseDragScroll = true, double scaleFactor = kDefaultMouseScrollToScaleFactor, TransformationController? transformationController, bool doubleTapToZoom = true})
Properties
- allowNonCoveringScreenZoom → bool
-
Allows the user to zoom out the child so that it is displayed smaller than the viewports width and height.
final
- doubleTapToZoom → bool
-
Allows the user to zoom by double tapping.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- interactionEndFrictionCoefficient → double
-
Changes the deceleration behavior after a gesture.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- maxScale → double
-
The maximum allowed scale.
final
- minScale → double
-
The minimum allowed scale.
final
- noMouseDragScroll → bool
-
When true, disables drag scrolling with the mouse.
Only mouse wheel zooming, and when enabled scrollbar zooming, is allowed then.
final
- panAxis → PanAxis
-
When set to PanAxis.aligned, panning is only allowed in the horizontal
axis or the vertical axis, diagonal panning is not allowed.
final
- panEnabled → bool
-
If false, the user will be prevented from panning.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scaleEnabled → bool
-
If false, the user will be prevented from scaling.
final
- scaleFactor → double
-
Determines the amount of scale to be performed per pointer scroll.
final
- showScrollbars → bool
-
Whether to show scrollbars.
final
- transformationController → TransformationController?
-
A TransformationController for the transformation performed on the
child.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → BetterInteractiveViewerBaseState< BetterInteractiveViewerBase> -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
getAxisAlignedBoundingBox(
Quad quad) → Quad - Given a quad, return its axis aligned bounding box.
-
getNearestPointInside(
Vector3 point, Quad quad) → Vector3 - Get the point inside (inclusively) the given Quad that is nearest to the given Vector3.
-
getNearestPointOnLine(
Vector3 point, Vector3 l1, Vector3 l2) → Vector3 - Returns the closest point to the given point on the given line segment.
-
pointIsInside(
Vector3 point, Quad quad) → bool - Returns true iff the point is inside the rectangle given by the Quad, inclusively. Algorithm from https://math.stackexchange.com/a/190373.