SingletonFlutterWindow class Null safety
A FlutterWindow that includes access to setting callbacks and retrieving properties that reside on the PlatformDispatcher.
It is the type of the global window singleton used by applications that only have a single main window.
In addition to the properties of FlutterView, this class provides access
to platform-specific properties. To modify or retrieve these properties,
applications designed for more than one main window should prefer using
WidgetsBinding.instance.platformDispatcher
instead.
Prefer access through WidgetsBinding.instance.window
or
WidgetsBinding.instance.platformDispatcher
over a static reference to
window, or PlatformDispatcher.instance. See the documentation for
PlatformDispatcher.instance for more details about this recommendation.
- Inheritance
-
- Object
- FlutterView
- FlutterWindow
- SingletonFlutterWindow
- Implementers
Properties
- accessibilityFeatures → AccessibilityFeatures
-
Additional accessibility features that may be enabled by the platform.
read-only
- alwaysUse24HourFormat → bool
-
The setting indicating whether time should always be shown in the 24-hour
format.
read-only
- brieflyShowPassword → bool
-
Whether briefly displaying the characters as you type in obscured text
fields is enabled in system settings.
read-only
- defaultRouteName → String
-
The route or path that the embedder requested when the application was
launched.
read-only
- devicePixelRatio → double
-
The number of device pixels for each logical pixel for the screen this
view is displayed on.
read-onlyinherited
-
displayFeatures
→ List<
DisplayFeature> -
Areas of the display that are obstructed by hardware features.
read-onlyinherited
- frameData → FrameData
-
The FrameData object for the current frame.
read-only
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- initialLifecycleState → String
-
The lifecycle state immediately after dart isolate initialization.
read-only
- locale → Locale
-
The system-reported default locale of the device.
read-only
-
locales
→ List<
Locale> -
The full system-reported supported locales of the device.
read-only
- nativeSpellCheckServiceDefined → bool
-
Whether the spell check service is supported on the current platform.
read-only
- onAccessibilityFeaturesChanged ↔ VoidCallback?
-
A callback that is invoked when the value of accessibilityFeatures changes.
read / write
- onBeginFrame ↔ FrameCallback?
-
A callback that is invoked to notify the window that it is an appropriate
time to provide a scene using the SceneBuilder API and the render
method.
read / write
- onDrawFrame ↔ VoidCallback?
-
A callback that is invoked for each frame after onBeginFrame has
completed and after the microtask queue has been drained.
read / write
- onFrameDataChanged ↔ VoidCallback?
-
A callback that is invoked when the window updates the FrameData.
read / write
- onKeyData ↔ KeyDataCallback?
-
A callback that is invoked when key data is available.
read / write
- onLocaleChanged ↔ VoidCallback?
-
A callback that is invoked whenever locale changes value.
read / write
- onMetricsChanged ↔ VoidCallback?
-
A callback that is invoked whenever the devicePixelRatio,
physicalSize, padding, viewInsets, PlatformDispatcher.views, or
systemGestureInsets values change.
read / write
- onPlatformBrightnessChanged ↔ VoidCallback?
-
A callback that is invoked whenever platformBrightness changes value.
read / write
- onPlatformMessage ↔ PlatformMessageCallback?
-
Called whenever this window receives a message from a platform-specific
plugin.
read / write
- onPointerDataPacket ↔ PointerDataPacketCallback?
-
A callback that is invoked when pointer data is available.
read / write
- onReportTimings ↔ TimingsCallback?
-
A callback that is invoked to report the FrameTiming of recently
rasterized frames.
read / write
- onSemanticsAction ↔ SemanticsActionCallback?
-
A callback that is invoked whenever the user requests an action to be
performed.
read / write
- onSemanticsEnabledChanged ↔ VoidCallback?
-
A callback that is invoked when the value of semanticsEnabled changes.
read / write
- onSystemFontFamilyChanged ↔ VoidCallback?
-
A callback that is invoked whenever systemFontFamily changes value.
read / write
- onTextScaleFactorChanged ↔ VoidCallback?
-
A callback that is invoked whenever textScaleFactor changes value.
read / write
- padding → WindowPadding
-
The number of physical pixels on each side of the display rectangle into
which the view can render, but which may be partially obscured by system
UI (such as the system notification area), or physical intrusions in
the display (e.g. overscan regions on television screens or phone sensor
housings).
read-onlyinherited
- physicalGeometry → Rect
-
The dimensions and location of the rectangle into which the scene rendered
in this view will be drawn on the screen, in physical pixels.
read-onlyinherited
- physicalSize → Size
-
The dimensions of the rectangle into which the scene rendered in this view
will be drawn on the screen, in physical pixels.
read-onlyinherited
- platformBrightness → Brightness
-
The setting indicating the current brightness mode of the host platform.
read-only
- platformDispatcher → PlatformDispatcher
-
The platform dispatcher that this view is registered with, and gets its
information from.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
- semanticsEnabled → bool
-
Whether the user has requested that updateSemantics be called when
the semantic contents of window changes.
read-only
- systemFontFamily → String?
-
The setting indicating the system font of the host platform.
read-only
- systemGestureInsets → WindowPadding
-
The number of physical pixels on each side of the display rectangle into
which the view can render, but where the operating system will consume
input gestures for the sake of system navigation.
read-onlyinherited
- textScaleFactor → double
-
The system-reported text scale.
read-only
- viewConfiguration → ViewConfiguration
-
The configuration of this view.
read-onlyinherited
- viewInsets → WindowPadding
-
The number of physical pixels on each side of the display rectangle into
which the view can render, but over which the operating system will likely
place system UI, such as the keyboard, that fully obscures any content.
read-onlyinherited
- viewPadding → WindowPadding
-
The number of physical pixels on each side of the display rectangle into
which the view can render, but which may be partially obscured by system
UI (such as the system notification area), or physical intrusions in
the display (e.g. overscan regions on television screens or phone sensor
housings).
read-onlyinherited
Methods
-
computePlatformResolvedLocale(
List< Locale> supportedLocales) → Locale? - Performs the platform-native locale resolution.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
render(
Scene scene) → void -
Updates the view's rendering on the GPU with the newly provided Scene.
inherited
-
scheduleFrame(
) → void - Requests that, at the next appropriate opportunity, the onBeginFrame and onDrawFrame callbacks be invoked.
-
sendPlatformMessage(
String name, ByteData? data, PlatformMessageResponseCallback? callback) → void - Sends a message to a platform-specific plugin.
-
setIsolateDebugName(
String name) → void - Set the debug name associated with this platform dispatcher's root isolate.
-
toString(
) → String -
A string representation of this object.
inherited
-
updateSemantics(
SemanticsUpdate update) → void - Change the retained semantics data about this window.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited