Crate operad 

Operad is a small retained-mode UI document layer.

The crate intentionally contains only reusable primitives: layout, text measurement, hit testing, focus, animation, and optional renderer backends. Product-specific screens and game/application state should live in the consuming application crate.

Re-exports

pub use core::document::CosmicTextMeasurer;

pub use core::document::length;

pub use core::document::root_style;

pub use core::document::AccessibilityAction;

pub use core::document::AccessibilityChecked;

pub use core::document::AccessibilityLiveRegion;

pub use core::document::AccessibilityMeta;

pub use core::document::AccessibilityNode;

pub use core::document::AccessibilityRelationKind;

pub use core::document::AccessibilityRelations;

pub use core::document::AccessibilityRole;

pub use core::document::AccessibilitySortDirection;

pub use core::document::AccessibilityStateKind;

pub use core::document::AccessibilitySummary;

pub use core::document::AccessibilitySummaryItem;

pub use core::document::AccessibilityTree;

pub use core::document::AccessibilityValueRange;

pub use core::document::AccessibilityValueRangeIssue;

pub use core::document::AnimatedValues;

pub use core::document::AnimationActiveTransitionSnapshot;

pub use core::document::AnimationBlendBinding;

pub use core::document::AnimationCondition;

pub use core::document::AnimationInputValue;

pub use core::document::AnimationMachine;

pub use core::document::AnimationNumberComparison;

pub use core::document::AnimationState;

pub use core::document::AnimationTickOutcome;

pub use core::document::AnimationTickReport;

pub use core::document::AnimationTransition;

pub use core::document::AnimationTrigger;

pub use core::document::ApproxTextMeasurer;

pub use core::document::AvailableSize;

pub use core::document::CanvasContent;

pub use core::document::CanvasContextDescriptor;

pub use core::document::CanvasContextKind;

pub use core::document::CanvasInteractionPolicy;

pub use core::document::CanvasRenderMode;

pub use core::document::CanvasRenderProgram;

pub use core::document::CanvasShaderConstant;

pub use core::document::ClipBehavior;

pub use core::document::ClipScope;

pub use core::document::ColorRgba;

pub use core::document::ComputedLayout;

pub use core::document::EditPhase;

pub use core::document::FocusDirection;

pub use core::document::FontFamily;

pub use core::document::FontStretch;

pub use core::document::FontStyle;

pub use core::document::FontWeight;

pub use core::document::ImageContent;

pub use core::document::InputBehavior;

pub use core::document::InteractionVisuals;

pub use core::document::IntrinsicSize;

pub use core::document::KeyCode;

pub use core::document::KeyModifiers;

pub use core::document::KnownSize;

pub use core::document::LayoutSnapshot;

pub use core::document::LayoutStyle;

pub use core::document::PaintCompositorLayer;

pub use core::document::PaintItem;

pub use core::document::PaintKind;

pub use core::document::PaintList;

pub use core::document::PaintTransform;

pub use core::document::ScenePrimitive;

pub use core::document::ScrollAxes;

pub use core::document::ScrollState;

pub use core::document::ShaderEffect;

pub use core::document::ShaderUniform;

pub use core::document::StrokeStyle;

pub use core::document::TextContent;

pub use core::document::TextInteractionStyles;

pub use core::document::TextMeasurer;

pub use core::document::TextStyle;

pub use core::document::TextWrap;

pub use core::document::UiContent;

pub use core::document::UiDocument;

pub use core::document::UiDocumentScale;

pub use core::document::UiFocusState;

pub use core::document::UiInputEvent;

pub use core::document::UiInputResult;

pub use core::document::UiNode;

pub use core::document::UiNodeId;

pub use core::document::UiNodeLayoutConstraint;

pub use core::document::UiNodeStyle;

pub use core::document::UiPoint;

pub use core::document::UiPortalId;

pub use core::document::UiPortalTarget;

pub use core::document::UiRect;

pub use core::document::UiSize;

pub use core::document::UiVisual;

pub use core::document::UiWheelEvent;

pub use core::document::ANIMATION_INPUT_ACTIVATED;

pub use core::document::ANIMATION_INPUT_ACTIVE;

pub use core::document::ANIMATION_INPUT_FOCUSED;

pub use core::document::ANIMATION_INPUT_HOVER;

pub use core::document::ANIMATION_INPUT_POINTER_NORM_X;

pub use core::document::ANIMATION_INPUT_POINTER_NORM_Y;

pub use core::document::ANIMATION_INPUT_POINTER_X;

pub use core::document::ANIMATION_INPUT_POINTER_Y;

pub use core::document::ANIMATION_INPUT_PRESSED;

pub use core::document::APP_OVERLAY_PORTAL;

pub use accessibility::FocusNavigationDirection;

pub use accessibility::FocusRestoreTarget;

pub use accessibility::FocusTrap;

pub use actions::WidgetAction;

pub use actions::WidgetActionBinding;

pub use actions::WidgetActionId;

pub use actions::WidgetActionKind;

pub use actions::WidgetActionMode;

pub use actions::WidgetActionQueue;

pub use actions::WidgetActionTrigger;

pub use actions::WidgetActivation;

pub use actions::WidgetDrag;

pub use actions::WidgetDragPhase;

pub use actions::WidgetFocusChange;

pub use actions::WidgetPointerEdit;

pub use actions::WidgetSelection;

pub use actions::WidgetTextEdit;

pub use actions::WidgetValueEditPhase;

pub use assets::BuiltInIcon;

pub use commands::Command;

pub use commands::CommandEffect;

pub use commands::CommandId;

pub use commands::CommandMeta;

pub use commands::CommandRegistry;

pub use commands::CommandScope;

pub use commands::Shortcut;

pub use drag_drop::DragDropSurfaceKind;

pub use drag_drop::DropPayloadFilter;

pub use forms::FieldId;

pub use forms::FieldState;

pub use forms::FormId;

pub use forms::FormState;

pub use forms::ValidationMessage;

pub use forms::ValidationSeverity;

pub use i18n::BidiPolicy;

pub use i18n::DynamicLabelMeta;

pub use i18n::LabelUpdatePolicy;

pub use i18n::LayoutMirrorMode;

pub use i18n::LocaleId;

pub use i18n::LocaleIdentifierError;

pub use i18n::LocalizationPolicy;

pub use i18n::ResolvedTextDirection;

pub use i18n::TextDirection;

pub use input::DragGesture;

pub use input::GestureEvent;

pub use input::GesturePhase;

pub use input::PointerButton;

pub use input::PointerButtons;

pub use input::PointerClick;

pub use input::PointerEventKind;

pub use input::PointerId;

pub use input::PointerKind;

pub use layout::ContainedFlowLayout;

pub use layout::Layout;

pub use layout::LayoutAlignment;

pub use layout::LayoutDimension;

pub use layout::LayoutDisplay;

pub use layout::LayoutFlexDirection;

pub use layout::LayoutFlexWrap;

pub use layout::LayoutGap;

pub use layout::LayoutGridTrack;

pub use layout::LayoutInset;

pub use layout::LayoutInsets;

pub use layout::LayoutJustifyContent;

pub use layout::LayoutLength;

pub use layout::LayoutPosition;

pub use layout::LayoutSize;

pub use layout::LayoutSpacing;

pub use overlays::OverlayDismissPolicy;

pub use overlays::OverlayDismissReason;

pub use overlays::OverlayEntry;

pub use overlays::OverlayFocusRestoreTarget;

pub use overlays::OverlayId;

pub use overlays::OverlayKind;

pub use overlays::OverlayStack;

pub use paint::AlignedStroke;

pub use paint::CornerRadii;

pub use paint::GradientStop;

pub use paint::ImageAlignment;

pub use paint::ImageFit;

pub use paint::LinearGradient;

pub use paint::PaintBrush;

pub use paint::PaintEffect;

pub use paint::PaintEffectKind;

pub use paint::PaintImage;

pub use paint::PaintPath;

pub use paint::PaintRect;

pub use paint::PaintText;

pub use paint::PathFillRule;

pub use paint::PathStrokeOptions;

pub use paint::PathVerb;

pub use paint::PixelSnapPolicy;

pub use paint::StrokeAlignment;

pub use paint::StrokeLineCap;

pub use paint::StrokeLineJoin;

pub use paint::TextHorizontalAlign;

pub use paint::TextOverflow;

pub use paint::TextVerticalAlign;

pub use runtime::native;

pub use testing::DirtyFlags;

pub use testing::FrameTiming;

pub use theme::color_with_alpha;

pub use theme::text_style_with_color;

pub use theme::text_style_with_scale;

pub use theme::ColorTokens;

pub use theme::ComponentIconStates;

pub use theme::ComponentLayoutTokens;

pub use theme::ComponentRole;

pub use theme::ComponentState;

pub use theme::ComponentStateSlot;

pub use theme::ComponentStyle;

pub use theme::ComponentTextStates;

pub use theme::ComponentTokens;

pub use theme::ComponentVisualStates;

pub use theme::EffectTokens;

pub use theme::IconStyle;

pub use theme::LayerEffect;

pub use theme::LayerEffectKind;

pub use theme::MotionCurve;

pub use theme::MotionTokens;

pub use theme::OpacityTokens;

pub use theme::RadiusTokens;

pub use theme::ScopedThemeRegistry;

pub use theme::SpacingTokens;

pub use theme::StrokeTokens;

pub use theme::Theme;

pub use theme::ThemePatch;

pub use theme::ThemeScope;

pub use theme::ThemeScopeError;

pub use theme::ThemeScopeId;

pub use theme::ThemeScopeKind;

pub use theme::TypographyTokens;

pub use theme::OPERAD_DARK_THEME_NAME;

Modules

accessibility

Backend-facing accessibility contracts.

actions

Renderer-neutral widget action events.

adapters

Optional host, renderer, and platform adapter integrations.

assets

Renderer-neutral icon and image asset registry contracts.

charts

Renderer-neutral chart, sparkline, and dense grid-map geometry helpers.

commands

Command metadata and keyboard shortcut routing primitives.

compositor

Backend-neutral compositor and layer contracts.

core

Core retained UI contracts.

debug

Renderer-neutral debug snapshots and dumps.

diagnostics

Diagnostics, error, limit, and test-support APIs.

display

Retained display-list cache contracts for static and semi-static surfaces.

domain

Higher-level reusable UI domains.

drag_drop

Renderer-neutral drag/drop surface metadata.

editor

Renderer-neutral editor surface geometry and interaction helpers.

effective_geometry

Backend-neutral effective geometry contracts.

errors

Structured error classification and local fallback contracts.

fonts

Backend-neutral font lifecycle and cache accounting.

forms

Form and validation lifecycle contracts.

host

Host adapter contracts for pre-paint interaction state.

i18n

Locale, text-direction, and dynamic label policy primitives.

input

Renderer-neutral raw input and gesture routing primitives.

input_devices

Higher-level input device policy contracts.

interaction

Backend-neutral input and interaction contracts.

layout

Operad-owned public layout primitives.

layout_animation

Layout animation planning.

limits

Resource and input limit policies with non-panicking validation reports.

navigation

Backend-neutral keyboard navigation contracts for composite widgets.

overlays

Shared overlay stack model for popovers, menus, dialogs, and tooltips.

paint

Renderer-neutral paint primitives for dense application and editor surfaces.

platform

Backend-neutral platform contracts for Operad adapters.

prelude

Common Operad imports for application code.

render

Backend-neutral rendering and display-list contracts.

renderer

Renderer/backend adapter contracts for Operad paint lists.

resource_cache

Backend-neutral resource lifecycle and cache accounting.

runtime

Backend-neutral runtime and frame scheduling contracts.

scrolling

Backend-neutral contracts for advanced scrolling behavior.

shell

Persistable app-shell and workspace state contracts.

state

Backend-neutral retained widget state and lifecycle reconciliation.

tasks

Backend-neutral async task lifecycle contracts.

testing

Renderer-neutral testing helpers for Operad documents.

theme

Backend-neutral theme tokens for Operad v3.

theme_stability

Stability records for v5 theme and design-token APIs.

tooltips

Tooltip and shortcut-display contracts for commands and compact controls.

transactions

Reusable edit transaction, selection, and text edit history primitives.

versioning

Public API stability and feature-versioning markers.

virtualization

Backend-neutral virtualization contracts for large retained collections.

wgpu_renderer

widgets

windows

Backend-neutral multi-window routing state.