DXUI

Layout, style, and theme types: Full declarations ​

Usage and examples · All APIs

These declarations are extracted from the Go AST, retaining English source contracts and field comments while hiding private fields. struct {} represents an opaque implementation, not permission to use a zero value instead of its constructor. Constant blocks retain iota context.

Length ​

text
Length is an opaque automatic, logical-pixel, or percentage length. Its zero
value means automatic sizing; use Px or Percent for an explicit value.
go
type Length struct {
}

Related example · Source style.go:13

Px ​

text
Px creates a logical-pixel length.
go
func Px(value float32) Length

Related example · Source style.go:19

Percent ​

text
Percent creates a percentage length in the range 0..100.
go
func Percent(value float32) Length

Related example · Source style.go:22

Fill ​

text
Fill is the common full-available-axis length. It is equivalent to
Percent(100) and remains subject to the parent's definite-size rules.
go
func Fill() Length

Related example · Source style.go:26

MetricToken ​

text
MetricToken names a theme metric.
go
type MetricToken string

Related example · Source style.go:29

ColorToken ​

text
ColorToken names a theme color.
go
type ColorToken string

Related example · Source style.go:32

MetricValue ​

text
MetricValue is either a literal logical-unit metric or a theme token.
go
type MetricValue struct {
}

Related example · Source style.go:35

Metric ​

text
Metric creates a literal metric.
go
func Metric(value float32) MetricValue

Related example · Source style.go:43

NoShrink ​

text
NoShrink explicitly disables flex shrinking. It is equivalent to Some(0)
and is distinct from an unset Shrink, whose default is one.
go
func NoShrink() Option[float32]

Related example · Source style.go:47

Padding ​

text
Padding applies one literal logical-unit metric to every edge. The returned
metrics are explicitly set, including when value is zero.
go
func Padding(value float32) EdgeValues

Related example · Source style.go:51

PaddingXY ​

text
PaddingXY applies literal logical-unit metrics to the horizontal and vertical
edges. The returned metrics are explicitly set, including zero values.
go
func PaddingXY(horizontal, vertical float32) EdgeValues

Related example · Source style.go:55

Margin ​

text
Margin applies one literal logical-unit metric to every edge, like Padding.
The returned metrics are explicitly set, including when value is zero.
go
func Margin(value float32) EdgeValues

Related example · Source style.go:64

MarginXY ​

text
MarginXY applies literal logical-unit metrics to the horizontal and vertical
edges, like PaddingXY. The returned metrics are explicitly set, including zero values.
go
func MarginXY(horizontal, vertical float32) EdgeValues

Related example · Source style.go:68

Round ​

text
Round applies one literal logical-unit radius to every corner. The returned
metrics are explicitly set, including when value is zero.
go
func Round(value float32) CornerValues

Related example · Source style.go:72

TokenMetric ​

text
TokenMetric creates a token-backed metric.
go
func TokenMetric(token MetricToken) MetricValue

Related example · Source style.go:75

ColorValue ​

text
ColorValue is either a literal color or a theme token.
go
type ColorValue struct {
}

Related example · Source style.go:80

ColorRGBA ​

text
ColorRGBA creates an explicitly set literal paint color from RGBA channels,
including transparent zero. Use RGBA for raw RGBAColor data instead.
go
func ColorRGBA(r, g, b, a uint8) ColorValue

Related example · Source style.go:89

LiteralColor ​

text
LiteralColor wraps existing raw RGBA data as a literal paint color.
Use ColorRGBA when supplying channels directly.
go
func LiteralColor(value RGBAColor) ColorValue

Related example · Source style.go:93

TokenColor ​

text
TokenColor creates a token-backed paint color.
go
func TokenColor(token ColorToken) ColorValue

Related example · Source style.go:96

EdgeValues ​

text
EdgeValues contains metrics in top, right, bottom, left order. Its zero-value
fields are unset.
go
type EdgeValues struct{ Top, Right, Bottom, Left MetricValue }

Related example · Source style.go:102

Edges ​

text
Edges creates explicit logical-unit edges in top, right, bottom, left order.
go
func Edges(top, right, bottom, left float32) EdgeValues

Related example · Source style.go:105

UniformEdges ​

text
UniformEdges applies one metric to every edge.
go
func UniformEdges(value MetricValue) EdgeValues

Related example · Source style.go:115

CornerValues ​

text
CornerValues contains radii in top-left, top-right, bottom-right, bottom-left order.
Its zero-value fields are unset.
go
type CornerValues struct{ TopLeft, TopRight, BottomRight, BottomLeft MetricValue }

Related example · Source style.go:121

Corners ​

text
Corners creates explicit logical-unit radii in top-left, top-right,
bottom-right, bottom-left order.
go
func Corners(topLeft, topRight, bottomRight, bottomLeft float32) CornerValues

Related example · Source style.go:125

UniformCorners ​

text
UniformCorners applies one radius to every corner.
go
func UniformCorners(value MetricValue) CornerValues

Related example · Source style.go:135

Position ​

text
Position controls normal-flow versus absolute layout.
go
type Position uint8

Related example · Source style.go:140

PositionFlow ​

go
const (
	PositionFlow Position = iota
	PositionAbsolute
)

Related example · Source style.go:143

PositionAbsolute ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:144

Insets ​

text
Insets contains absolute-position insets.
go
type Insets struct{ Top, Right, Bottom, Left Length }

Related example · Source style.go:148

Overflow ​

text
Overflow controls container clipping.
go
type Overflow uint8

Related example · Source style.go:151

OverflowVisible ​

go
const (
	OverflowVisible Overflow = iota
	OverflowClip
)

Related example · Source style.go:154

OverflowClip ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:155

Align ​

text
Align controls cross-axis alignment.
go
type Align uint8

Related example · Source style.go:159

AlignStart ​

go
const (
	AlignStart Align = iota
	AlignCenter
	AlignEnd
	AlignStretch
)

Related example · Source style.go:162

AlignCenter ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:163

AlignEnd ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:164

AlignStretch ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:165

Justify ​

text
Justify controls main-axis alignment.
go
type Justify uint8

Related example · Source style.go:169

JustifyStart ​

go
const (
	JustifyStart Justify = iota
	JustifyCenter
	JustifyEnd
	JustifySpaceBetween
)

Related example · Source style.go:172

JustifyCenter ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:173

JustifyEnd ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:174

JustifySpaceBetween ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:175

Style ​

text
Style contains the supported layout, paint, and typography controls. Box
is always single-line; there is intentionally no wrap or order
property. The zero value is safe and selects intrinsic sizing and theme
defaults.
go
type Style struct {
	Width, Height       Length
	MinWidth, MinHeight Length
	MaxWidth, MaxHeight Length
	Margin, Padding     EdgeValues
	Position            Position
	Insets              Insets
	Grow                float32
	Shrink              Option[float32]
	Basis               Length
	AlignSelf           Option[Align]
	ZIndex              int
	Overflow            Overflow
	Background          ColorValue
	Border              Border
	Radius              CornerValues
	// Shadow is an explicitly requested list of outer shadows. A nil value
	// leaves a theme/state value unchanged; a non-nil empty slice removes it.
	Shadow     []Shadow
	Opacity    Option[float32]
	Visibility Visibility
	Text       TextStyle
	// Force is applied after component and interaction-state styles. It is for
	// deliberate paint overrides such as suppressing a focus ring; ordinary
	// base appearance belongs in the fields above so Hover/Pressed/Focus remain
	// visible. Force cannot affect layout.
	Force StylePatch
}

Related example · Source style.go:182

Visibility ​

text
Visibility controls whether a node contributes display items.
go
type Visibility uint8

Related example · Source style.go:212

Visible ​

go
const (
	Visible Visibility = iota
	Hidden
)

Related example · Source style.go:215

Hidden ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:216

PointerBehavior ​

text
PointerBehavior controls pointer participation for a view subtree.
go
type PointerBehavior uint8

Related example · Source style.go:220

PointerAuto ​

go
const (
	PointerAuto PointerBehavior = iota
	// PointerNone excludes the view and all descendants. It is intended for
	// decorative overlays that must not intercept content below them.
	PointerNone
)

Related example · Source style.go:223

PointerNone ​

text
PointerNone excludes the view and all descendants. It is intended for
decorative overlays that must not intercept content below them.

See the corresponding constant block on this page for types and values.

Related example · Source style.go:226

BorderPattern ​

text
BorderPattern selects how a border is painted. The zero value is solid.
go
type BorderPattern uint8

Related example · Source style.go:230

BorderSolid ​

go
const (
	BorderSolid BorderPattern = iota
	BorderDashed
)

Related example · Source style.go:233

BorderDashed ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:234

BorderSides ​

text
BorderSides selects edges. Zero means all edges, not an absent border.
go
type BorderSides uint8

Related example · Source style.go:238

BorderTop ​

go
const (
	BorderTop BorderSides = 1 << iota
	BorderRight
	BorderBottom
	BorderLeft
	BorderAll = BorderTop | BorderRight | BorderBottom | BorderLeft
)

Related example · Source style.go:241

BorderRight ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:242

BorderBottom ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:243

BorderLeft ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:244

BorderAll ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:245

Border ​

text
Border is a paint-only border drawn inside a view's layout bounds.
Each side owns the nearest half of its two adjacent corner arcs.
go
type Border struct {
	Width   MetricValue
	Color   ColorValue
	Pattern BorderPattern
	// Sides defaults to all edges. In Style, a Width/Color assignment resets
	// Sides too; otherwise nonzero Sides changes only edge selection.
	// StylePatch.Border replaces the complete Border.
	Sides BorderSides
}

Related example · Source style.go:250

NoBorder ​

text
NoBorder explicitly clears the border width. In ordinary Style, later state
patches may restore a border; Style.Force is applied after those patches.
go
func NoBorder() Border

Related example · Source style.go:262

Stroke ​

text
Stroke creates a solid border with a literal logical-unit width.
go
func Stroke(width float32, color ColorValue) Border

Related example · Source style.go:265

Shadow ​

text
Shadow is an outer paint-only shadow. MVP shadows support finite,
non-negative blur/spread and are rendered by a bounded approximation.
go
type Shadow struct {
	OffsetX, OffsetY MetricValue
	Blur, Spread     MetricValue
	Color            ColorValue
}

Related example · Source style.go:271

FontWeight ​

text
FontWeight selects the nearest registered face weight in a family.
go
type FontWeight uint16

Related example · Source style.go:278

WeightRegular ​

go
const (
	WeightRegular FontWeight = 400
	WeightMedium  FontWeight = 500
	WeightBold    FontWeight = 700
)

Related example · Source style.go:281

WeightMedium ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:282

WeightBold ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:283

FontSlant ​

text
FontSlant selects a registered normal or italic face.
go
type FontSlant uint8

Related example · Source style.go:287

SlantNormal ​

go
const (
	SlantNormal FontSlant = iota
	SlantItalic
)

Related example · Source style.go:290

SlantItalic ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:291

TextAlign ​

text
TextAlign is horizontal alignment within a Text node's content box.
go
type TextAlign uint8

Related example · Source style.go:295

TextStart ​

go
const (
	TextStart TextAlign = iota
	TextCenter
	TextEnd
)

Related example · Source style.go:298

TextCenter ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:299

TextEnd ​

See the corresponding constant block on this page for types and values.

Related example · Source style.go:300

TextStyle ​

text
TextStyle contains the simple-LTR/CJK MVP text inputs. Families are tried in
order before the App default and built-in Latin fallback. Size is a font
size in logical units; zero uses the current theme's default. LineHeight is
a logical-unit line height; zero uses the current theme's default.
Arabic/Indic shaping, bidi/RTL, color emoji, and vertical text are not
supported by this API.
go
type TextStyle struct {
	Families   []FontFamily
	Size       float32
	LineHeight float32
	Weight     FontWeight
	Slant      FontSlant
	Color      ColorValue
	Align      TextAlign
}

Related example · Source style.go:309

ComponentToken ​

text
ComponentToken names a component-level theme entry.
go
type ComponentToken string

Related example · Source style.go:320

PrimitiveTokens ​

text
PrimitiveTokens are the literal foundation of a theme.
go
type PrimitiveTokens struct {
	Colors  map[ColorToken]RGBAColor
	Metrics map[MetricToken]float32
}

Related example · Source style.go:323

SemanticTokens ​

text
SemanticTokens map product meaning onto primitive or earlier semantic
tokens. A literal ColorValue/MetricValue is also accepted.
go
type SemanticTokens struct {
	Colors  map[ColorToken]ColorValue
	Metrics map[MetricToken]MetricValue
}

Related example · Source style.go:330

StylePatch ​

text
StylePatch is an explicitly optional paint-only override. State styles are
intentionally paint-only in MVP, so interaction never moves layout.
go
type StylePatch struct {
	Background Option[ColorValue]
	Border     Option[Border]
	Radius     Option[CornerValues]
	Shadow     Option[[]Shadow]
	Opacity    Option[float32]
	Visibility Option[Visibility]
	TextColor  Option[ColorValue]
}

Related example · Source style.go:337

StateStyles ​

text
StateStyles contains the deterministic MVP visual-state cascade.
go
type StateStyles struct {
	Default  StylePatch
	Hover    StylePatch
	Focus    StylePatch
	Disabled StylePatch
	Pressed  StylePatch
	Checked  StylePatch
}

Related example · Source style.go:348

ComponentTheme ​

text
ComponentTheme supplies semantic-token-backed defaults for one component.
go
type ComponentTheme struct {
	Base   StylePatch
	States StateStyles
}

Related example · Source style.go:358

Theme ​

text
Theme is the public, type-safe Primitive -> Semantic -> Component token
structure. SetTheme validates and copies every map and slice atomically.
go
type Theme struct {
	Primitive  PrimitiveTokens
	Semantic   SemanticTokens
	Components map[ComponentToken]ComponentTheme
}

Related example · Source style.go:365

Direction ​

text
Direction selects Box's main axis. Vertical is the zero value.
go
type Direction uint8

Related example · Source style.go:384

Vertical ​

text
Vertical lays out Box children from top to bottom and is the zero value.
go
const (
	// Vertical lays out Box children from top to bottom and is the zero value.
	Vertical Direction = iota
	// Horizontal lays out Box children from left to right.
	Horizontal
)

Related example · Source style.go:388

Horizontal ​

text
Horizontal lays out Box children from left to right.

See the corresponding constant block on this page for types and values.

Related example · Source style.go:390

BoxProps ​

text
BoxProps configures a Box. Gap is a fixed logical-unit spacing; zero means
no spacing between children.
go
type BoxProps struct {
	Key     string
	Style   Style
	Token   ComponentToken
	States  StateStyles
	Pointer PointerBehavior

	Direction Direction
	Gap       float32
	Justify   Justify
	Align     Align
}

Related example · Source style.go:395