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 dart:ui.Image.dispose on the image once the RawImage is no longer buildable.
This widget is rarely used directly. Instead, consider using Image.
- Inheritance
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.medium, bool isAntiAlias = false}) -
Creates a widget that displays an image.
const
Properties
- alignment → AlignmentGeometry
-
How to align the image within its bounds.
final
- centerSlice → Rect?
-
The center slice for a nine-patch image.
final
- color → Color?
-
If non-null, this color is blended with each image pixel using colorBlendMode.
final
- colorBlendMode → BlendMode?
-
Used to combine color with this image.
final
- debugImageLabel → String?
-
A string identifying the source of the image.
final
- filterQuality → FilterQuality
-
Used to set the filterQuality of the image.
final
- fit → BoxFit?
-
How to inscribe the image into the space allocated during layout.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- height → double?
-
If non-null, require the image to have this height.
final
- image → Image?
-
The image to display.
final
- invertColors → bool
-
Whether the colors of the image are inverted when drawn.
final
- isAntiAlias → bool
-
Whether to paint the image with anti-aliasing.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- matchTextDirection → bool
-
Whether to paint the image in the direction of the TextDirection.
final
-
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
- repeat → ImageRepeat
-
How to paint any portions of the layout bounds not covered by the image.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scale → double
-
Specifies the image's scale.
final
- width → double?
-
If non-null, require the image to have this width.
final
Methods
-
createElement(
) → LeafRenderObjectElement -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
-
createRenderObject(
BuildContext context) → RenderImage -
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.
override
-
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.
override
-
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}) → 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 RenderImage 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