RenderProxyBoxMixin<T extends RenderBox> mixin

Methods

adoptChild(RenderObject child) → void

Called by subclasses when they decide a render object is a child.

inherited

applyPaintTransform(covariant RenderObject child, Matrix4 transform) → void

Multiply the transform from the parent's coordinate system to this box's coordinate system into the given transform.

override

assembleSemanticsNode(SemanticsNode node, SemanticsConfiguration config, Iterable<SemanticsNode> children) → void

Assemble the SemanticsNode for this RenderObject.

inherited

attach(PipelineOwner owner) → void

Mark this render object as attached to the given owner.

inherited

clearSemantics() → void

Removes all semantics from this render object and its descendants.

inherited

computeDistanceToActualBaseline(TextBaseline baseline) → double?

Returns the distance from the y-coordinate of the position of the box to the y-coordinate of the first given baseline in the box's contents, if any, or null otherwise.

override

computeDryBaseline(covariant BoxConstraints constraints, TextBaseline baseline) → double?

Computes the value returned by getDryBaseline.

override

computeDryLayout(covariant BoxConstraints constraints) → Size

Computes the value returned by getDryLayout. Do not call this function directly, instead, call getDryLayout.

override

computeMaxIntrinsicHeight(double width) → double

Computes the value returned by getMaxIntrinsicHeight. Do not call this function directly, instead, call getMaxIntrinsicHeight.

override

computeMaxIntrinsicWidth(double height) → double

Computes the value returned by getMaxIntrinsicWidth. Do not call this function directly, instead, call getMaxIntrinsicWidth.

override

computeMinIntrinsicHeight(double width) → double

Computes the value returned by getMinIntrinsicHeight. Do not call this function directly, instead, call getMinIntrinsicHeight.

override

computeMinIntrinsicWidth(double height) → double

Computes the value returned by getMinIntrinsicWidth. Do not call this function directly, instead, call getMinIntrinsicWidth.

override

computeSizeForNoChild(BoxConstraints constraints) → Size

Calculate the size the RenderProxyBox would have under the given BoxConstraints for the case where it does not have a child.

debugAdoptSize(Size value) → Size

Claims ownership of the given Size.

inherited

debugAssertDoesMeetConstraints() → void

Verify that the object's constraints are being met. Override this function in a subclass to verify that your state matches the constraints object. This function is only called when asserts are enabled (i.e. in debug mode) and only when needsLayout is false. If the constraints are not met, it should assert or throw an exception.

inherited

debugCannotComputeDryLayout({String? reason, FlutterError? error}) → bool

Called from computeDryLayout or computeDryBaseline within an assert if the given RenderBox subclass does not support calculating a dry layout.

inherited

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

debugHandleEvent(PointerEvent event, HitTestEntry<HitTestTarget> entry) → bool

Implements the debugPaintPointersEnabled debugging feature.

inherited

debugPaint(PaintingContext context, Offset offset) → void

Override this method to paint debugging information.

inherited

debugPaintBaselines(PaintingContext context, Offset offset) → void

In debug mode, paints a line for each baseline.

inherited

debugPaintPointers(PaintingContext context, Offset offset) → void

In debug mode, paints a rectangle if this render box has counted more pointer downs than pointer up events.

inherited

debugPaintSize(PaintingContext context, Offset offset) → void

In debug mode, paints a border around this render box.

inherited

debugRegisterRepaintBoundaryPaint({bool includedParent = true, bool includedChild = false}) → void

Called, in debug mode, if isRepaintBoundary is true, when either the this render object or its parent attempt to paint.

inherited

debugResetSize() → void

If a subclass has a "size" (the state controlled by parentUsesSize, whatever it is in the subclass, e.g. the actual size property of RenderBox), and the subclass verifies that in debug mode this "size" property isn't used when debugCanParentUseSize isn't set, then that subclass should override debugResetSize to reapply the current values of debugCanParentUseSize to that state.

inherited

debugValidateChild(RenderObject child) → bool

Checks whether the given render object has the correct runtimeType to be a child of this render object.

inherited

describeApproximatePaintClip(covariant RenderObject child) → Rect?

Returns a rect in this object's coordinate system that describes the approximate bounding box of the clip rect that would be applied to the given child during the paint phase, if any.

inherited

describeForError(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.shallow}) → DiagnosticsNode

Adds a debug representation of a RenderObject optimized for including in error messages.

inherited

describeSemanticsClip(covariant RenderObject? child) → Rect?

Returns a rect in this object's coordinate system that describes which SemanticsNodes produced by the child should be included in the semantics tree. SemanticsNodes from the child that are positioned outside of this rect will be dropped. Child SemanticsNodes that are positioned inside this rect, but outside of describeApproximatePaintClip will be included in the tree marked as hidden. Child SemanticsNodes that are inside of both rect will be included in the tree as regular nodes.

inherited

describeSemanticsConfiguration(SemanticsConfiguration config) → void

Report the semantics of this node, for example for accessibility purposes.

inherited

detach() → void

Mark this render object as detached from its PipelineOwner.

inherited

dispose() → void

Release any resources held by this render object.

inherited

dropChild(RenderObject child) → void

Called by subclasses when they decide a render object is no longer a child.

inherited

getDistanceToActualBaseline(TextBaseline baseline) → double?

Calls computeDistanceToActualBaseline and caches the result.

inherited

getDistanceToBaseline(TextBaseline baseline, {bool onlyReal = false}) → double?

Returns the distance from the y-coordinate of the position of the box to the y-coordinate of the first given baseline in the box's contents.

inherited

getDryBaseline(covariant BoxConstraints constraints, TextBaseline baseline) → double?

Returns the distance from the top of the box to the first baseline of the box's contents for the given constraints, or null if this RenderBox does not have any baselines.

inherited

getDryLayout(covariant BoxConstraints constraints) → Size

Returns the Size that this RenderBox would like to be given the provided BoxConstraints.

inherited

getMaxIntrinsicHeight(double width) → double

Returns the smallest height beyond which increasing the height never decreases the preferred width. The preferred width is the value that would be returned by getMinIntrinsicWidth for that height.

inherited

getMaxIntrinsicWidth(double height) → double

Returns the smallest width beyond which increasing the width never decreases the preferred height. The preferred height is the value that would be returned by getMinIntrinsicHeight for that width.

inherited

getMinIntrinsicHeight(double width) → double

Returns the minimum height that this box could be without failing to correctly paint its contents within itself, without clipping.

inherited

getMinIntrinsicWidth(double height) → double

Returns the minimum width that this box could be without failing to correctly paint its contents within itself, without clipping.

inherited

getTransformTo(RenderObject? target) → Matrix4

Applies the paint transform from this RenderObject to the target RenderObject.

inherited

globalToLocal(Offset point, {RenderObject? ancestor}) → Offset

Convert the given point from the global coordinate system in logical pixels to the local coordinate system for this box.

inherited

handleEvent(PointerEvent event, covariant HitTestEntry<HitTestTarget> entry) → void

Override this method to handle pointer events that hit this render object.

inherited

hitTest(BoxHitTestResult result, {required Offset position}) → bool

Determines the set of render objects located at the given position.

inherited

hitTestChildren(BoxHitTestResult result, {required Offset position}) → bool

Override this method to check whether any children are located at the given position.

override

hitTestSelf(Offset position) → bool

Override this method if this render object can be hit even if its children were not hit.

inherited

invokeLayoutCallback<T extends Constraints>(LayoutCallback<T> callback) → void

Allows mutations to be made to this object's child list (and any descendants) as well as to any other dirty nodes in the render tree owned by the same PipelineOwner as this object. The callback argument is invoked synchronously, and the mutations are allowed only during that callback's execution.

inherited

layout(Constraints constraints, {bool parentUsesSize = false}) → void

Compute the layout for this render object.

inherited

localToGlobal(Offset point, {RenderObject? ancestor}) → Offset

Convert the given point from the local coordinate system for this box to the global coordinate system in logical pixels.

inherited

markNeedsCompositedLayerUpdate() → void

Mark this render object as having changed a property on its composited layer.

inherited

markNeedsCompositingBitsUpdate() → void

Mark the compositing state for this render object as dirty.

inherited

markNeedsLayout() → void

Mark this render object's layout information as dirty, and either register this object with its PipelineOwner, or defer to the parent, depending on whether this object is a relayout boundary or not respectively.

inherited

markNeedsLayoutForSizedByParentChange() → void

Mark this render object's layout information as dirty (like markNeedsLayout), and additionally also handle any necessary work to handle the case where sizedByParent has changed value.

inherited

markNeedsPaint() → void

Mark this render object as having changed its visual appearance.

inherited

markNeedsSemanticsUpdate() → void

Mark this node as needing an update to its semantics description.

inherited

markParentNeedsLayout() → void

Mark this render object's layout information as dirty, and then defer to the parent.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

paint(PaintingContext context, Offset offset) → void

Paint this render object into the given context at the given offset.

override

paintsChild(covariant RenderObject child) → bool

Whether the given child would be painted if paint were called.

inherited

performLayout() → void

Do the work of computing the layout for this render object.

override

performResize() → void

Updates the render objects size using only the constraints.

inherited

reassemble() → void

Cause the entire subtree rooted at the given RenderObject to be marked dirty for layout, paint, etc, so that the effects of a hot reload can be seen, or so that the effect of changing a global debug flag (such as debugPaintSizeEnabled) can be applied.

inherited

redepthChild(RenderObject child) → void

Adjust the depth of the given child to be greater than this node's own depth.

inherited

redepthChildren() → void

Adjust the depth of this node's children, if any.

inherited

replaceRootLayer(OffsetLayer rootLayer) → void

Replace the layer. This is only valid for the root of a render object subtree (whatever object scheduleInitialPaint was called on).

inherited

scheduleInitialLayout() → void

Bootstrap the rendering pipeline by scheduling the very first layout.

inherited

scheduleInitialPaint(ContainerLayer rootLayer) → void

Bootstrap the rendering pipeline by scheduling the very first paint.

inherited

scheduleInitialSemantics() → void

Bootstrap the semantics reporting mechanism by marking this node as needing a semantics update.

inherited

sendSemanticsEvent(SemanticsEvent semanticsEvent) → void

Sends a SemanticsEvent associated with this render object's SemanticsNode.

inherited

setupParentData(covariant RenderObject child) → void

Override to setup parent data correctly for your children.

override

showOnScreen({RenderObject? descendant, Rect? rect, Duration duration = Duration.zero, Curve curve = Curves.ease}) → void

Attempt to make (a portion of) this or a descendant RenderObject visible on screen.

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 description of the tree rooted at this node. If the prefix argument is provided, then every line in the output will be prefixed by that string.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the render object. This description is often somewhat long.

inherited

toStringShort() → String

Returns a human understandable name.

inherited

updateCompositedLayer({required covariant OffsetLayer? oldLayer}) → OffsetLayer

Update the composited layer owned by this render object.

inherited

visitChildren(RenderObjectVisitor visitor) → void

Calls visitor for each immediate child of this render object.

inherited

visitChildrenForSemantics(RenderObjectVisitor visitor) → void

Called when collecting the semantics of this node.

inherited