RenderEditable class
Displays some text in a scrollable container with a potentially blinking cursor and with gesture recognizers.
This is the renderer for an editable text field. It does not directly provide affordances for editing the text, but it does handle text selection and manipulation of the text cursor.
The text is displayed, scrolled by the given offset, aligned according to textAlign. The maxLines property controls whether the text displays on one line or many. The selection, if it is not collapsed, is painted in the selectionColor. If it is collapsed, then it represents the cursor position. The cursor is shown while showCursor is true. It is painted in the cursorColor.
Keyboard handling, IME handling, scrolling, toggling the showCursor value to actually blink the cursor, and other features not mentioned above are the responsibility of higher layers and not handled by this object.
- Inheritance
-
- Object
- RenderObject
- RenderBox
- RenderEditable
- Implemented types
- Mixed-in types
Constructors
-
RenderEditable({InlineSpan? text, required TextDirection textDirection, TextAlign textAlign = TextAlign.start, Color? cursorColor, Color? backgroundCursorColor, ValueNotifier<
bool> ? showCursor, bool? hasFocus, required LayerLink startHandleLayerLink, required LayerLink endHandleLayerLink, int? maxLines = 1, int? minLines, bool expands = false, StrutStyle? strutStyle, Color? selectionColor, @Deprecated('Use textScaler instead. ' 'Use of textScaleFactor was deprecated in preparation for the upcoming nonlinear text scaling support. ' 'This feature was deprecated after v3.12.0-2.0.pre.') double textScaleFactor = 1.0, TextScaler textScaler = TextScaler.noScaling, TextSelection? selection, required ViewportOffset offset, bool ignorePointer = false, bool readOnly = false, bool forceLine = true, TextHeightBehavior? textHeightBehavior, TextWidthBasis textWidthBasis = TextWidthBasis.parent, String obscuringCharacter = '•', bool obscureText = false, Locale? locale, double cursorWidth = 1.0, double? cursorHeight, Radius? cursorRadius, bool paintCursorAboveText = false, Offset cursorOffset = Offset.zero, double devicePixelRatio = 1.0, BoxHeightStyle selectionHeightStyle = ui.BoxHeightStyle.tight, BoxWidthStyle selectionWidthStyle = ui.BoxWidthStyle.tight, bool? enableInteractiveSelection, EdgeInsets floatingCursorAddedMargin = const EdgeInsets.fromLTRB(4, 4, 4, 5), TextRange? promptRectRange, Color? promptRectColor, Clip clipBehavior = Clip.hardEdge, required TextSelectionDelegate textSelectionDelegate, RenderEditablePainter? painter, RenderEditablePainter? foregroundPainter, List<RenderBox> ? children}) - Creates a render object that implements the visual aspects of a text field.
Properties
- alwaysNeedsCompositing → bool
-
Whether this render object always needs compositing.
no setterinherited
- attached → bool
-
Whether the render tree this render object belongs to is attached to a PipelineOwner.
no setterinherited
- backgroundCursorColor ↔ Color?
-
The color to use when painting the cursor aligned to the text while
rendering the floating cursor.
getter/setter pair
- childCount → int
-
The number of children.
no setterinherited
- clipBehavior ↔ Clip
-
The content will be clipped (or not) according to this option.
getter/setter pair
- constraints → BoxConstraints
-
The box constraints most recently received from the parent.
no setterinherited
- cursorColor ↔ Color?
-
The color to use when painting the cursor.
getter/setter pair
- cursorHeight ↔ double
-
How tall the cursor will be.
getter/setter pair
- cursorOffset ↔ Offset
-
The offset that is used, in pixels, when painting the cursor on screen.
getter/setter pair
- cursorRadius ↔ Radius?
-
How rounded the corners of the cursor should be.
getter/setter pair
- cursorWidth ↔ double
-
How thick the cursor will be.
getter/setter pair
- debugCanParentUseSize → bool
-
Whether the parent render object is permitted to use this render object's
size.
no setterinherited
- debugCreator ↔ Object?
-
The object responsible for creating this render object.
getter/setter pairinherited
- debugDisposed → bool?
-
Whether this has been disposed.
no setterinherited
- debugDoingThisLayout → bool
-
Whether performLayout for this render object is currently running.
no setterinherited
- debugDoingThisLayoutWithCallback → bool
-
Whether invokeLayoutCallback for this render object is currently running.
no setterinherited
- debugDoingThisPaint → bool
-
Whether paint for this render object is currently running.
no setterinherited
- debugDoingThisResize → bool
-
Whether performResize for this render object is currently running.
no setterinherited
- debugLayer → ContainerLayer?
-
In debug mode, the compositing layer that this render object uses to repaint.
no setterinherited
- debugLayoutParent → RenderObject?
-
The RenderObject that's expected to call layout on this RenderObject
in its performLayout implementation.
no setterinherited
- debugNeedsCompositedLayerUpdate → bool
-
Whether this render object's layer information is dirty.
no setterinherited
- debugNeedsLayout → bool
-
Whether this render object's layout information is dirty.
no setterinherited
- debugNeedsPaint → bool
-
Whether this render object's paint information is dirty.
no setterinherited
- debugNeedsSemanticsUpdate → bool
-
Whether the semantics of this render object is dirty and await the update.
no setterinherited
- debugSemantics → SemanticsNode?
-
The semantics of this render object.
no setterinherited
- depth → int
-
The depth of this render object in the render tree.
no setterinherited
- devicePixelRatio ↔ double
-
The pixel ratio of the current device.
getter/setter pair
- enableInteractiveSelection ↔ bool?
-
Whether to allow the user to change the selection.
getter/setter pair
- endHandleLayerLink ↔ LayerLink
-
The LayerLink of end selection handle.
getter/setter pair
- expands ↔ bool
-
Whether this widget's height will be sized to fill its parent.
getter/setter pair
- firstChild → RenderBox?
-
The first child in the child list.
no setterinherited
- floatingCursorAddedMargin ↔ EdgeInsets
-
The padding applied to text field. Used to determine the bounds when
moving the floating cursor.
getter/setter pair
- floatingCursorOn → bool
-
Returns true if the floating cursor is visible, false otherwise.
no setter
- forceLine ↔ bool
-
Whether this rendering object will take a full line regardless the text width.
getter/setter pair
- foregroundPainter ↔ RenderEditablePainter?
-
The RenderEditablePainter to use for painting above this
RenderEditable's text content.
getter/setter pair
- hasFocus ↔ bool
-
Whether the editable is currently focused.
getter/setter pair
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasSize → bool
-
Whether this render object has undergone layout and has a size.
no setterinherited
- ignorePointer ↔ bool
-
Whether the handleEvent will propagate pointer events to selection
handlers.
getter/setter pair
- isRepaintBoundary → bool
-
Whether this render object repaints separately from its parent.
no setterinherited
- lastChild → RenderBox?
-
The last child in the child list.
no setterinherited
- lastSecondaryTapDownPosition → Offset?
-
The position of the most recent secondary tap down event on this text
input.
no setter
- layer ↔ ContainerLayer?
-
The compositing layer that this render object uses to repaint.
getter/setter pairinherited
- locale ↔ Locale?
-
Used by this renderer's internal TextPainter to select a locale-specific
font.
getter/setter pair
- maxLines ↔ int?
-
The maximum number of lines for the text to span, wrapping if necessary.
getter/setter pair
- maxScrollExtent → double
-
The maximum amount the text is allowed to scroll.
no setter
- minLines ↔ int?
-
The minimum number of lines to occupy when the content spans fewer lines.
getter/setter pair
- needsCompositing → bool
-
Whether we or one of our descendants has a compositing layer.
no setterinherited
- obscureText ↔ bool
-
Whether to hide the text being edited (e.g., for passwords).
getter/setter pair
- obscuringCharacter ↔ String
-
Character used for obscuring text if obscureText is true.
getter/setter pair
- offset ↔ ViewportOffset
-
The offset at which the text should be painted.
getter/setter pair
- owner → PipelineOwner?
-
The owner for this render object (null if unattached).
no setterinherited
- paintBounds → Rect
-
Returns a rectangle that contains all the pixels painted by this box.
no setterinherited
- paintCursorAboveText ↔ bool
-
If the cursor should be painted on top of the text or underneath it.
getter/setter pair
- painter ↔ RenderEditablePainter?
-
Sets the RenderEditablePainter to use for painting beneath this
RenderEditable's text content.
getter/setter pair
- parent → RenderObject?
-
The parent of this render object in the render tree.
no setterinherited
- parentData ↔ ParentData?
-
Data for use by the parent render object.
getter/setter pairinherited
- plainText → String
-
Returns a plain text version of the text in TextPainter.
no setter
- preferredLineHeight → double
-
An estimate of the height of a line in the text. See TextPainter.preferredLineHeight.
This does not require the layout to be updated.
no setter
- promptRectColor ↔ Color?
-
The color used to paint the prompt rectangle.
getter/setter pair
- readOnly ↔ bool
-
Whether this rendering object is read only.
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- selection ↔ TextSelection?
-
The region of text that is selected, if any.
getter/setter pair
- selectionColor ↔ Color?
-
The color to use when painting the selection.
getter/setter pair
- selectionEnabled → bool
-
Whether interactive selection are enabled based on the values of
enableInteractiveSelection and obscureText.
no setter
-
selectionEndInViewport
→ ValueListenable<
bool> -
Track whether position of the end of the selected text is within the viewport.
no setter
- selectionHeightStyle ↔ BoxHeightStyle
-
Controls how tall the selection highlight boxes are computed to be.
getter/setter pair
-
selectionStartInViewport
→ ValueListenable<
bool> -
Track whether position of the start of the selected text is within the viewport.
no setter
- selectionWidthStyle ↔ BoxWidthStyle
-
Controls how wide the selection highlight boxes are computed to be.
getter/setter pair
- semanticBounds → Rect
-
The bounding box, in the local coordinate system, of this
object, for accessibility purposes.
no setterinherited
- semanticsParent → RenderObject?
-
The semantics parent of this render object in the semantics tree.
no setterinherited
-
showCursor
↔ ValueNotifier<
bool> -
Whether to paint the cursor.
getter/setter pair
- size ↔ Size
-
The size of this render box computed during layout.
getter/setter pairinherited
- sizedByParent → bool
-
Whether the constraints are the only input to the sizing algorithm (in
particular, child nodes have no impact).
no setterinherited
- startHandleLayerLink ↔ LayerLink
-
The LayerLink of start selection handle.
getter/setter pair
- strutStyle ↔ StrutStyle?
-
The StrutStyle used by the renderer's internal TextPainter to
determine the strut to use.
getter/setter pair
- text ↔ InlineSpan?
-
The text to paint in the form of a tree of InlineSpans.
getter/setter pair
- textAlign ↔ TextAlign
-
How the text should be aligned horizontally.
getter/setter pair
- textDirection ↔ TextDirection
-
The directionality of the text.
getter/setter pair
- textHeightBehavior ↔ TextHeightBehavior?
-
Defines how to apply TextStyle.height over and under text.
getter/setter pair
- textScaleFactor ↔ double
-
Deprecated. Will be removed in a future version of Flutter. Use
textScaler instead.
getter/setter pair
- textScaler ↔ TextScaler
-
The font scaling strategy to use when laying out and rendering the text.
getter/setter pair
- textSelectionDelegate ↔ TextSelectionDelegate
-
The object that controls the text selection, used by this render object
for implementing cut, copy, and paste keyboard shortcuts.
getter/setter pair
- textWidthBasis ↔ TextWidthBasis
-
Defines how to measure the width of the rendered text.
getter/setter pair
- wordBoundaries → WordBoundary
-
Returns a TextBoundary that can be used to perform word boundary analysis
on the current text.
no setter
Methods
-
add(
RenderBox child) → void -
Append child to the end of this render object's child list.
inherited
-
addAll(
List< RenderBox> ? children) → void -
Add all the children to the end of this render object's child list.
inherited
-
adoptChild(
RenderObject child) → void -
Called by subclasses when they decide a render object is a child.
inherited
-
applyPaintTransform(
covariant RenderBox 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.
override
-
attach(
PipelineOwner owner) → void -
Mark this render object as attached to the given owner.
override
-
calculateBoundedFloatingCursorOffset(
Offset rawCursorOffset, {bool? shouldResetOrigin}) → Offset - Returns the position within the text field closest to the raw cursor offset.
-
childAfter(
RenderBox child) → RenderBox? -
The next child after the given child in the child list.
inherited
-
childBefore(
RenderBox child) → RenderBox? -
The previous child before the given child in the child list.
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
-
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.
override
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
override
-
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 actualsize
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
-
defaultApplyPaintTransform(
RenderBox child, Matrix4 transform) → void -
Applies the transform that would be applied when painting the given child
to the given matrix.
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.
override
-
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 thechild
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.
override
-
detach(
) → void -
Mark this render object as detached from its PipelineOwner.
override
-
dispose(
) → void -
Release any resources held by this render object.
override
-
dropChild(
RenderObject child) → void -
Called by subclasses when they decide a render object is no longer a child.
inherited
-
getBoxesForSelection(
TextSelection selection) → List< TextBox> - Returns a list of rects that bound the given selection, and the text direction. The text direction is used by the engine to calculate the closest position to a given point.
-
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
, ornull
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
-
getEndpointsForSelection(
TextSelection selection) → List< TextSelectionPoint> - Returns the local coordinates of the endpoints of the given selection.
-
getLineAtOffset(
TextPosition position) → TextSelection -
Return a TextSelection containing the line of the given TextPosition.
override
-
getLocalRectForCaret(
TextPosition caretPosition) → Rect - Returns the Rect in local coordinates for the caret at the given text position.
-
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
-
getPositionForPoint(
Offset globalPosition) → TextPosition - Returns the position in the text for the given global coordinate.
-
getRectForComposingRange(
TextRange range) → Rect? - Returns the smallest Rect, in the local coordinate system, that covers the text within the TextRange specified.
-
getTextPositionAbove(
TextPosition position) → TextPosition -
Returns the TextPosition above the given offset into the text.
override
-
getTextPositionBelow(
TextPosition position) → TextPosition -
Returns the TextPosition below the given offset into the text.
override
-
getTransformTo(
RenderObject? target) → Matrix4 -
Applies the paint transform from this RenderObject to the
target
RenderObject.inherited -
getWordAtOffset(
TextPosition position) → TextSelection - Returns a TextSelection that encompasses the word at the given TextPosition.
-
getWordBoundary(
TextPosition position) → TextRange -
Returns the text range of the word at the given offset. Characters not
part of a word, such as spaces, symbols, and punctuation, have word breaks
on both sides. In such cases, this method will return a text range that
contains the given text position.
override
-
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
-
handleDoubleTap(
) → void - If ignorePointer is false (the default) then this method is called by the internal gesture recognizer's DoubleTapGestureRecognizer.onDoubleTap callback.
-
handleEvent(
PointerEvent event, covariant BoxHitTestEntry entry) → void -
Override this method to handle pointer events that hit this render object.
override
-
handleLongPress(
) → void - If ignorePointer is false (the default) then this method is called by the internal gesture recognizer's LongPressGestureRecognizer.onLongPress callback.
-
handleSecondaryTapDown(
TapDownDetails details) → void - Tracks the position of a secondary tap event.
-
handleTap(
) → void - If ignorePointer is false (the default) then this method is called by the internal gesture recognizer's TapGestureRecognizer.onTap callback.
-
handleTapDown(
TapDownDetails details) → void - If ignorePointer is false (the default) then this method is called by the internal gesture recognizer's TapGestureRecognizer.onTapDown callback.
-
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
-
hitTestInlineChildren(
BoxHitTestResult result, Offset position) → bool -
Performs a hit test on each inline child.
inherited
-
hitTestSelf(
Offset position) → bool -
Override this method if this render object can be hit even if its
children were not hit.
override
-
insert(
RenderBox child, {RenderBox? after}) → void -
Insert child into this render object's child list after the given child.
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
-
layoutInlineChildren(
double maxWidth, ChildLayouter layoutChild, ChildBaselineGetter getChildBaseline) → List< PlaceholderDimensions> -
Computes the layout for every inline child using the
maxWidth
constraint.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.
override
-
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
-
move(
RenderBox child, {RenderBox? after}) → void -
Move the given
child
in the child list to be after another child.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
-
paintInlineChildren(
PaintingContext context, Offset offset) → void -
Paints each inline child.
inherited
-
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
-
positionInlineChildren(
List< TextBox> boxes) → void -
Positions each inline child according to the coordinates provided in the
boxes
list.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.
override
-
remove(
RenderBox child) → void -
Remove this child from the child list.
inherited
-
removeAll(
) → void -
Remove all their children from this render object's child list.
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
-
selectPosition(
{required SelectionChangedCause cause}) → void - Move selection to the location of the last tap down.
-
selectPositionAt(
{required Offset from, Offset? to, required SelectionChangedCause cause}) → void -
Select text between the global positions
from
andto
. -
selectWord(
{required SelectionChangedCause cause}) → void - Select a word around the location of the last tap down.
-
selectWordEdge(
{required SelectionChangedCause cause}) → void - Move the selection to the beginning or end of a word.
-
selectWordsInRange(
{required Offset from, Offset? to, required SelectionChangedCause cause}) → void - Selects the set words of a paragraph that intersect a given range of global positions.
-
sendSemanticsEvent(
SemanticsEvent semanticsEvent) → void -
Sends a SemanticsEvent associated with this render object's SemanticsNode.
inherited
-
setFloatingCursor(
FloatingCursorDragState state, Offset boundedOffset, TextPosition lastTextPosition, {double? resetLerpValue}) → void - Sets the screen position of the floating cursor and the text position closest to the cursor.
-
setPromptRectRange(
TextRange? newRange) → void -
Dismisses the currently displayed prompt rectangle and displays a new prompt rectangle
over
newRange
in the given color promptRectColor. -
setupParentData(
covariant RenderBox child) → void -
Override to setup parent data correctly for your children.
inherited
-
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
-
startVerticalCaretMovement(
TextPosition startPosition) → VerticalCaretMovementRun - Starts a VerticalCaretMovementRun at the given location in the text, for handling consecutive vertical caret movements.
-
systemFontsDidChange(
) → void -
A callback that is called when system fonts have changed.
override
-
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.
override
-
visitChildrenForSemantics(
RenderObjectVisitor visitor) → void -
Called when collecting the semantics of this node.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited