ImageExtension class

Inheritance

• Object
• HtmlExtension
• ImageExtension

Constructors

ImageExtension({AssetBundle? assetBundle, String? assetPackage, String assetSchema = "asset:", String? dataEncoding, Set<String>? fileExtensions, Set<String>? mimeTypes, Set<String>? networkDomains, Map<String, String>? networkHeaders, Set<String> networkSchemas = const {"http", "https"}, bool handleAssetImages = true, bool handleDataImages = true, bool handleNetworkImages = true, Widget? child, Widget builder(ExtensionContext)?})

ImageExtension allows you to extend the built-in support by providing a custom way to render a specific selection of attributes or providing headers or asset package/bundle specifications.

ImageExtension.inline({AssetBundle? assetBundle, String? assetPackage, String assetSchema = "asset:", String? dataEncoding, Set<String>? fileExtensions, Set<String>? mimeTypes, Set<String>? networkDomains, Map<String, String>? networkHeaders, Set<String> networkSchemas = const {"http", "https"}, bool handleAssetImages = true, bool handleDataImages = true, bool handleNetworkImages = true, InlineSpan? child, InlineSpan builder(ExtensionContext)?})

See ImageExtension. The only difference is that this method allows you to directly pass an InlineSpan through child or builder, allowing you to construct more seamless extensions.

Properties

assetBundle → AssetBundle?

final, inherited

assetPackage → String?

final, inherited

assetSchema → String

final, inherited

builder ↔ InlineSpan Function(ExtensionContext)?

late, final

dataEncoding → String?

final, inherited

fileExtensions → Set<String>?

final, inherited

handleAssetImages → bool

final, inherited

handleDataImages → bool

final, inherited

handleNetworkImages → bool

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

mimeTypes → Set<String>?

final, inherited

networkDomains → Set<String>?

final, inherited

networkHeaders → Map<String, String>?

final, inherited

networkSchemas → Set<String>

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

supportedTags → Set<String>

Tells the HtmlParser what additional tags to add to the default supported tag list (the extension's user can still override this by setting an explicit tagList on the Html widget).

no setter, inherited

Methods

beforeProcessing(ExtensionContext context) → void

Called after styling, but before extra elements/whitespace has been removed, margins collapsed, list characters processed, or relative values calculated. Default behavior: do nothing;

inherited

beforeStyle(ExtensionContext context) → void

Called before styles are applied to the tree. Default behavior: do nothing;

inherited

build(ExtensionContext context) → InlineSpan

The final step in the chain. Converts the StyledElement tree, with its attached Style elements, into an InlineSpan tree that includes Widget/TextSpans that can be rendered in a RichText widget.

matches(ExtensionContext context) → bool

This method is called to test whether or not this extension needs to do any work in this context.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onDispose() → void

Called when the Html widget is being destroyed. This would be a very good place to dispose() any controllers or free any resources that the extension uses. Default behavior: do nothing.

inherited

prepare(ExtensionContext context, List<StyledElement> children) → StyledElement

Converts parsed HTML to a StyledElement.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited