RawImage class

A widget that displays a dart:ui.Image directly.

The image is painted using paintImage, which describes the meanings of the various fields on this class in more detail.

The image is not disposed of by this widget. Creators of the widget are expected to call Image.dispose on the image once the RawImage is no longer buildable.

This widget is rarely used directly. Instead, consider using Image.

Inheritance

• Object
• DiagnosticableTree
• Widget
• RenderObjectWidget
• LeafRenderObjectWidget
• RawImage
• RawImage

Constructors

RawImage({Key? key, Image? image, String? debugImageLabel, double? width, double? height, double scale = 1.0, Color? color, Animation<double>? opacity, BlendMode? colorBlendMode, BoxFit? fit, AlignmentGeometry alignment = Alignment.center, ImageRepeat repeat = ImageRepeat.noRepeat, Rect? centerSlice, bool matchTextDirection = false, bool invertColors = false, FilterQuality filterQuality = FilterQuality.low, bool isAntiAlias = false})

const

Properties

alignment → AlignmentGeometry

How to align the image within its bounds.

final, inherited

centerSlice → Rect?

The center slice for a nine-patch image.

final, inherited

color → Color?

If non-null, this color is blended with each image pixel using colorBlendMode.

final, inherited

colorBlendMode → BlendMode?

Used to combine color with this image.

final, inherited

debugImageLabel → String?

A string identifying the source of the image.

final, inherited

filterQuality → FilterQuality

Used to set the filterQuality of the image.

final, inherited

fit → BoxFit?

How to inscribe the image into the space allocated during layout.

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

height → double?

If non-null, require the image to have this height.

final, inherited

image → Image?

The image to display.

final, inherited

invertColors → bool

Whether the colors of the image are inverted when drawn.

final, inherited

isAntiAlias → bool

Whether to paint the image with anti-aliasing.

final, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

matchTextDirection → bool

Whether to paint the image in the direction of the TextDirection.

final, inherited

opacity → Animation<double>?

If non-null, the value from the Animation is multiplied with the opacity of each image pixel before painting onto the canvas.

final, inherited

repeat → ImageRepeat

How to paint any portions of the layout bounds not covered by the image.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

scale → double

The linear scale factor for drawing this image at its intended size.

final, inherited

width → double?

If non-null, require the image to have this width.

final, inherited

Methods

createElement() → LeafRenderObjectElement

RenderObjectWidgets always inflate to a RenderObjectElement subclass.

inherited

createRenderObject(BuildContext context) → RenderImagePixelSnap

Creates an instance of the RenderObject class that this RenderObjectWidget represents, using the configuration described by this RenderObjectWidget.

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

didUnmountRenderObject(covariant RenderImage renderObject) → void

A render object previously associated with this widget has been removed from the tree. The given RenderObject will be of the same type as returned by this object's createRenderObject.

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

updateRenderObject(BuildContext context, covariant RenderImagePixelSnap renderObject) → void

Copies the configuration described by this RenderObjectWidget to the given RenderObject, which will be of the same type as returned by this object's createRenderObject.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited