PaintingBinding mixin
Binding for the painting library.
Hooks into the cache eviction logic to clear the image cache.
Requires the ServicesBinding to be mixed in earlier.
- Superclass Constraints
- Implemented by
Constructors
Properties
- decodedCacheRatioCap ↔ double
-
The maximum multiple of the compressed image size used when caching an
animated image. [...]
read / write
- imageCache → ImageCache
-
The singleton that implements the Flutter framework's image cache. [...]
read-only
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- locked → bool
-
Whether lockEvents is currently locking events. [...]
@protected, read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
createImageCache(
) → ImageCache -
Creates the ImageCache singleton (accessible via imageCache). [...]
@protected
-
evict(
String asset) → void -
Called in response to the
ext.flutter.evictservice extension. [...]override -
initInstances(
) → void -
The initialization method. Subclasses override this method to hook into
the platform and otherwise configure their services. Subclasses must call
"super.initInstances()". [...]
override
-
instantiateImageCodec(
Uint8List list) → Future< Codec> - Calls through to dart:ui with decodedCacheRatioCap from ImageCache.
-
initLicenses(
) → void -
Adds relevant licenses to the LicenseRegistry. [...]
@mustCallSuper, @protected, inherited
-
initServiceExtensions(
) → void -
Called when the binding is initialized, to register service
extensions. [...]
inherited
-
lockEvents(
Future< void> callback()) → Future< void> -
Locks the dispatching of asynchronous events and callbacks until the
callback's future completes. [...]
@protected, inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
performReassemble(
) → Future< void> -
This method is called by reassembleApplication to actually cause the
application to reassemble, e.g. after a hot reload. [...]
@mustCallSuper, @protected, inherited
-
reassembleApplication(
) → Future< void> -
Cause the entire application to redraw, e.g. after a hot reload. [...]
inherited
-
registerBoolServiceExtension(
{String name, AsyncValueGetter< bool> getter, AsyncValueSetter< bool> setter }) → void -
Registers a service extension method with the given name (full
name "ext.flutter.name"), which takes a single argument
"enabled" which can have the value "true" or the value "false"
or can be omitted to read the current value. (Any value other
than "true" is considered equivalent to "false". Other arguments
are ignored.) [...]
@protected, inherited
-
registerNumericServiceExtension(
{String name, AsyncValueGetter< double> getter, AsyncValueSetter< double> setter }) → void -
Registers a service extension method with the given name (full
name "ext.flutter.name"), which takes a single argument with the
same name as the method which, if present, must have a value
that can be parsed by double.parse, and can be omitted to read
the current value. (Other arguments are ignored.) [...]
@protected, inherited
-
registerServiceExtension(
{String name, ServiceExtensionCallback callback }) → void -
Registers a service extension method with the given name (full name
"ext.flutter.name"). [...]
@protected, inherited
-
registerSignalServiceExtension(
{String name, AsyncCallback callback }) → void -
Registers a service extension method with the given name (full
name "ext.flutter.name"), which takes no arguments and returns
no value. [...]
@protected, inherited
-
registerStringServiceExtension(
{String name, AsyncValueGetter< String> getter, AsyncValueSetter< String> setter }) → void -
Registers a service extension method with the given name (full name
"ext.flutter.name"), which optionally takes a single argument with the
name "value". If the argument is omitted, the value is to be read,
otherwise it is to be set. Returns the current value. [...]
@protected, inherited
-
toString(
) → String -
Returns a string representation of this object.
inherited
-
unlocked(
) → void -
Called by lockEvents when events get unlocked. [...]
@mustCallSuper, @protected, inherited
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited
Static Properties
- instance → PaintingBinding
-
The current PaintingBinding, if one has been created.
read-only