Crate inset_embedder

Expand description

Flutter’s dart:ui: host traits (Platform, View) and value types (Offset, Color, Canvas, Paint, Shadow).

The framework depends on this crate. This crate does not depend on the framework. Hosts implement Platform and View, and invoke EmbedderClient on the client the start closure returns. They do not name App.

Re-exports§

pub use valo;

Structs§

ApplicationSwitcherDescription: Specifies a description of the application that is pertinent to the embedder’s application switcher (also known as “recent tasks”) user interface.
AutofillConfiguration: A collection of autofill related information that represents an AutofillClient.
Backdrop: Backdrop filters the sampled scene before a save layer’s children paint.
Color: An immutable color value in ARGB format.
FontCollection: FontCollection owns registered faces and sources for resolving missing fonts.
FontDemand: FontDemand describes font requests that no registered face could satisfy.
FontFeature: A feature tag and value that affect the selection of glyphs in a font.
FontId: FontId identifies a registered font within a FaceSet or FontCollection.
FontVariation: An axis tag and value that can be used to customize variable fonts.
FontWeight: The thickness of the glyphs used to draw the text.
Frame: One complete engine frame delivered to the client.
GestureSettings: A null field indicates that the platform or view does not have a preference and the fallback constants should be used instead.
GlyphInfo: The measurements of a character (or a sequence of visually connected characters) within a paragraph.
Image: Image is a cheap-to-clone handle to an immutable GPU image.
ImageFrame: One decoded frame, prepared and ready to draw. Flutter dart:ui FrameInfo.
InertPlatform: Platform for hand-pumped tests.
Instant: A measurement of a monotonically nondecreasing clock. Opaque and useful only with Duration.
KeyData: Information about a key event.
LineMetrics: LineMetrics stores the measurements and statistics of a single line in the paragraph.
Locale: An identifier used to select a user’s language and formatting preferences.
MaskBlur: MaskBlur applies a Gaussian blur to a draw’s coverage mask.
Matrix4: Matrix is a full 4×4 column-major transform.
Offset: An immutable 2D floating-point offset.
Paint: Paint describes how a drawing operation produces and composites pixels.
Paragraph: A paragraph of text.
ParagraphBuilder: Builds a Paragraph containing text with the given styling information.
ParagraphConstraints: Layout constraints for Paragraph objects.
ParagraphStyle: An opaque object that determines the configuration used by ParagraphBuilder to position lines within a Paragraph of text.
Path: Path is an immutable collection of line and Bézier contours.
PathBuilder: PathBuilder records commands used to create an immutable Path.
PointerData: Information about the state of a pointer.
PointerDataPacket: A sequence of reports about the state of pointers.
Quaternion: A rotation as a unit quaternion.
RRect: An immutable rounded rectangle with the custom radii for all four corners.
RSuperellipse: An immutable rounded superellipse.
Radius: A radius for either circular or elliptical shapes.
RawFloatingCursorPoint: The current state and position of the floating cursor.
Rect: An immutable, 2D, axis-aligned, floating-point rectangle whose coordinates are relative to a given origin.
RestorationUpdate: What the host answers when the framework asks for the restoration data it stored.
SceneBuilder: Builds a Scene containing the given visuals.
Shadow: A representation of a shadow.
Size: Holds a 2D floating-point size.
Stroke: Stroke describes the width, ends, joins, and optional dash pattern of a line.
SystemFontSource: The engine’s font manager: the platform’s installed fonts through a FontManager, and the two family names Flutter’s engine defines for the platform’s own user-interface font.
SystemUiOverlayStyle: Specifies a system overlay style for a portion of the app.
TextBox: A rectangle enclosing a run of text.
TextDecoration: A linear decoration to draw near the text.
TextEditingValue: The current text, selection, and composing state for editing a run of text.
TextHeightBehavior: Defines how to apply TextStyle.height over and under text.
TextInputConfiguration: Controls the visual appearance of the text input control.
TextInputType: The type of information for which to optimize the text input control.
TextPosition: A position in a string of text.
TextRange: A range of characters in a string of text.
TextSelection: A range of text that represents a selection.
TextStyle: An opaque object that determines the size, position, and rendering of text.
Typeface: Typeface is one face the platform matched: a font file, the face’s index in it, and how the platform names and styles that face.
Vector3: A three-dimensional vector.
ViewConstraints: Immutable layout constraints for a view (dart:ui ViewConstraints).
ViewFocusEvent: An event for the engine to communicate view focus changes to the app. Flutter counterpart: ViewFocusEvent in dart:ui/platform_dispatcher.dart.
ViewId: Opaque id for one View (FlutterView.viewId).
ViewMetrics: Per-view geometry the host reports (_ViewConfiguration fields we use).
ViewPadding: Physical padding on each side of a view (dart:ui ViewPadding).
WindowConfig: How a window is made. Sizes and positions are logical, in the host’s screen space with the origin at the top left of the primary screen.

Enums§

AppExitResponse: The possible responses to a request to exit the application.
AppLifecycleState: States that an application can be in once it is running.
BlendMode: BlendMode controls how source pixels combine with destination pixels.
BlurStyle: BlurStyle controls where blurred coverage appears relative to a shape.
BoxHeightStyle: Defines various ways to vertically bound the boxes returned by Paragraph::get_boxes_for_range.
BoxWidthStyle: Defines various ways to horizontally bound the boxes returned by Paragraph::get_boxes_for_range.
Brightness: Describes the contrast of a theme or color palette.
Clip: Different ways to clip content.
ClipOp: ClipOp controls how a clip shape changes the current clip.
ColorFilter: A description of a color filter to apply when drawing a shape or compositing a layer with a particular Paint. A color filter is a function that takes two colors, and outputs one color. When applied during compositing, it is independently applied to each pixel of the layer being drawn before the entire layer is merged with the destination.
ColorSpace: The color space describes the colors that are available to an Image.
FillRule: FillRule determines which regions of overlapping contours are filled.
FloatingCursorDragState: The state of a “floating cursor” drag on an iOS soft keyboard.
FontStyle: Whether to use the italic type variation of glyphs in the font.
HapticFeedbackType: The kind of haptic feedback to play.
ImageDecodeError: Why an image could not be read. Flutter reports these as an exception on the codec future.
ImageFilter: A filter operation to apply to a raster image.
ImageRepetition: How an animation repeats once it has played through.
KeyEventDeviceType: The source device for the key event.
KeyEventType: The type of a key event.
MatrixKind: MatrixKind classifies the behavior relevant to two-dimensional rendering.
PaintStyle: PaintStyle selects filled geometry or a stroked outline.
PlaceholderAlignment: Where to vertically align the placeholder relative to the surrounding text.
PointerChange: How the pointer has changed since the last report.
PointerDeviceKind: The kind of pointer device.
PointerSignalKind: The kind of pointer signal event.
PopupMenuEntry: One line of a popup menu the host shows with its own menu system.
RawWindowHandle: A window handle for a particular windowing system.
RestorationData: One value in the restoration data, of the kinds StandardMessageCodec can carry.
SmartDashesType: Indicates how to handle the intelligent replacement of dashes in text input.
SmartQuotesType: Indicates how to handle the intelligent replacement of quotes in text input.
SystemContextMenuItem: A button to show in the system-rendered context menu.
SystemMouseCursorKind: A system cursor kind (SystemMouseCursor.kind). The host maps each to its native cursor and shows the basic arrow for one it lacks; None hides the cursor.
TargetPlatform: The platform that user interaction should adapt to target.
TextAffinity: A way to disambiguate a TextPosition when its offset could match two different locations in the rendered string.
TextAlign: Whether and how to align text horizontally.
TextBaseline: A horizontal line used for aligning text.
TextCapitalization: Configures how the platform keyboard will select an uppercase or lowercase keyboard.
TextDecorationStyle: The style in which to draw a text decoration
TextDirection: A direction in which text flows.
TextInputAction: An action the user has requested the text input control to perform.
TextLeadingDistribution: How the leading of the text is distributed over and under the text.
ViewFocusDirection: Represents the direction in which focus transitioned across views.
ViewFocusState: Represents the focus state of a given view.
WindowBackground: What the window shows behind the app’s painting. Anything but Solid lets what is behind the window show where the app paints nothing.
WindowError
WindowLevel

Constants§

K_TEXT_HEIGHT_NONE: A TextStyle.height value that indicates the text span should take the height defined by the font, which may not be exactly the height of fontSize.

Traits§

CanvasText: Paragraph drawing on a Canvas (Dart’s Canvas.drawParagraph).
EmbedderClient: Complete frames and typed view lifecycle notifications.
FontManager: FontManager is the platform’s font lookup, in the shape of Skia’s SkFontMgr.
FontSource: FontSource locates fonts that are not already registered.
HostWindow: A window the host has on screen. Its view is what the framework draws into and receives input from, like the implicit view.
ImageCodec: One encoded image, opened and ready to give up its frames. Flutter dart:ui Codec.
Platform: The long-lived host object held by the application.
View: A stable handle to one host-provided view.
WindowingOwner: The host’s window maker. None from crate::Platform::windowing_owner where the implicit view is the only one there can be.

Functions§

clamp_double: Same as f64::clamp but maps NaN to max.
compose: Composes a matrix from translation, rotation and scale.
decompose: Decomposes matrix into its translation, rotation and scale components.
default_font_families: Flutter txt::GetDefaultFontFamilies(): the family names FontCollection::setDefaultFontManager looks up when a style leaves fontFamily unset.
flattened_ops: The picture’s operations in replay order with every embedded list’s following its embedding op, for a test or a diagnostic that asks what a scene draws regardless of how its layers nested it.
lerp_double: Linearly interpolate between two numbers, a and b, by an extrapolation factor t.
lerp_int: Linearly interpolate between two integers.
rrect_radii_elliptical: Per-corner elliptical radii in valo’s order (clockwise from top-left).
rsuperellipse_radii_elliptical: Per-corner elliptical radii in valo’s order (clockwise from top-left).
set_default_font_manager: Flutter skia::textlayout::FontCollection::setDefaultFontManager: register the default family’s faces as the collection’s fallback chain, then keep source for later lookups.
transform3: Transforms a point as a 3-vector, with no perspective division.

Type Aliases§

Canvas: Flutter Canvas — valo records into a display list.
EngineLayer: Flutter EngineLayer — the display list a layer’s subtree recorded when it was last added to a scene, which SceneBuilder::add_retained embeds again while nothing in it changed. The engine keeps a node of its layer tree; valo keeps a nested list.
ImageCodecFuture: A codec being opened. Flutter’s Future<ui.Codec>.
ImageFrameFuture: A frame being decoded. Flutter’s Future<ui.FrameInfo>.
Picture: Flutter Picture — a finished display list, what crate::View::present takes (Flutter FlutterView.render takes a Scene).
PlatformRef
RestorationMap: Flutter’s Map<Object?, Object?> of restoration data: insertion-ordered, keyed by value.
Scene: Flutter Scene — what SceneBuilder::build produces and crate::View::present takes.
ViewRef
WindowFuture: A window being made: the host finishes it on its own loop.
WindowRef

Crate inset_embedder

Crate inset_embedder Copy item path

Re-exports§

Structs§

Enums§

Constants§

Traits§

Functions§

Type Aliases§

Crate inset_embedder