PrismZoomableImage class
An image with pinch-to-zoom and pan, plus double-tap to reset.
Wraps InteractiveViewer and adds the pieces the default does not have:
a border radius from the tokens, a place to put a placeholder while the image
loads, and an error handler that does not render a broken-image glyph.
PrismZoomableImage(
imageUrl: 'https://example.com/photo.jpg',
borderRadius: BorderRadius.circular(16),
placeholder: const CircularProgressIndicator(),
)
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- PrismZoomableImage
Constructors
-
PrismZoomableImage({Key? key, required String imageUrl, double? width, double? height, BorderRadius? borderRadius, Widget? placeholder, ImageErrorWidgetBuilder? errorBuilder, double maxScale = 4, Map<
String, String> ? headers, String? semanticLabel}) -
Creates a zoomable image.
const
Properties
- borderRadius → BorderRadius?
-
Corner radius, which clips the image.
final
- errorBuilder → ImageErrorWidgetBuilder?
-
Called when the image fails to load. Return a widget to show instead.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
-
headers
→ Map<
String, String> ? -
HTTP headers to send with the request.
final
- height → double?
-
Constrained height. Defaults to filling the parent.
final
- imageUrl → String
-
Network URL of the image.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- maxScale → double
-
Maximum zoom level. Defaults to 4.
final
- placeholder → Widget?
-
Widget shown while the image loads.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- semanticLabel → String?
-
Accessibility label for the image.
final
- width → double?
-
Constrained width. Defaults to filling the parent.
final
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
override
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
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
-
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