Meter

显示已知范围内的标量测量值，并带有语义化的低值、高值和最佳区间。

正在加载交互演示…

func MeterExample(value func() *float64) *ui.Element {
	meter := ui.NewMeter().SetValue(value).Min(0).Max(100).Low(25).High(80).Optimum(50)
	return meter.Root().Children(
		meter.Label().Child("Disk used"),
		meter.Track().Child(meter.Indicator()),
		meter.Value(),
	)
}

#导入

从 github.com/egoist/quickgui/go/ui 导入 ui。

import (
	"github.com/egoist/quickgui/go/ui"
)

#用法

func MeterExample(value func() *float64) *ui.Element {
	meter := ui.NewMeter().SetValue(value).Min(0).Max(100).Low(25).High(80).Optimum(50)
	return meter.Root().Children(
		meter.Label().Child("Disk used"),
		meter.Track().Child(meter.Indicator()),
		meter.Value(),
	)
}

#结构

meter.Root
meter.Track
meter.Indicator
meter.Label
meter.Value

#API 参考

展开条目查看说明和完整签名。短横线表示声明中未记录默认值。

`NewMeter`

查看源码

ui.NewMeter(props ...MeterProps) *MeterComponent

NewMeter declares a Meter instance. Optional props provide initial settings.

Reffunc(*native.Node)—

Receives the retained native node after construction. Keep imperative work in event or lifecycle callbacks.

func(*native.Node)

查看源码

Styleany—

Reusable layout, typography, color, and interaction-state styles. Build with ui.Style() and compose with Merge.

any

查看源码

ChildrenPartChildren—

Content mounted inside the component. Compound child callbacks run after the parent context exists.

PartChildren

查看源码

Disabledany—

Prevents activation and exposes the disabled state to accessibility. Compound parts inherit a disabled root.

any

查看源码

Rolestring—

Accessibility role override. Prefer the component’s built-in semantics.

string

查看源码

FocusOnPointerany—

Whether a pointer press moves keyboard focus to the control.

any

查看源码

Groupany—

Names this element as a group for descendant interaction-state styling.

any

查看源码

AriaLabelany—

Accessible name, especially for icon-only controls or controls without a visible label.

any

查看源码

TabIndex*float64—

Controls sequential keyboard focus order. Omit to retain the component’s default focus behavior.

*float64

查看源码

OnClickfunc(*native.Event)—

Called after QuickGUI resolves an activation, including supported keyboard activation.

func(*native.Event)

查看源码

OnDoubleClickfunc(*native.Event)—

Callback for double click. The signature below lists the event payload.

func(*native.Event)

查看源码

OnContextMenufunc(*native.Event)—

Callback for context menu. The signature below lists the event payload.

func(*native.Event)

查看源码

OnPointerfunc(*native.Event)—

Callback for pointer. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseEnterfunc(*native.Event)—

Callback for mouse enter. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseLeavefunc(*native.Event)—

Callback for mouse leave. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseDownfunc(*native.Event)—

Callback for mouse down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseUpfunc(*native.Event)—

Callback for mouse up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyDownfunc(*native.Event)—

Callback for key down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyUpfunc(*native.Event)—

Callback for key up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnFocusfunc(*native.Event)—

Callback for focus. The signature below lists the event payload.

func(*native.Event)

查看源码

OnBlurfunc(*native.Event)—

Callback for blur. The signature below lists the event payload.

func(*native.Event)

查看源码

Formatstring—

Formatting configuration or callback for the displayed value.

string

查看源码

OnStatusChangefunc(GaugeState, *native.Event)—

Reports the derived status, formatted value, and completion ratio.

func(GaugeState, *native.Event)

查看源码

Valuefunc() *float64—

The current controlled value. Update application state from the change callback to accept a new value.

func() *float64

查看源码

Minany—

Lower bound of the accepted value.

any

查看源码

Maxany—

Upper bound of the accepted value.

any

查看源码

Lowany—

Upper boundary of the low meter range.

any

查看源码

Highany—

Lower boundary of the high meter range.

any

查看源码

Optimumany—

Preferred point or range for the meter value.

any

查看源码

`Meter.Disabled`

查看源码

meter.Disabled(value any) *MeterComponent

Prevents activation and exposes the disabled state to accessibility. Compound parts inherit a disabled root.

`Meter.Format`

查看源码

meter.Format(value string) *MeterComponent

Formatting configuration or callback for the displayed value.

`Meter.OnStatusChange`

查看源码

meter.OnStatusChange(value func(GaugeState, *native.Event)) *MeterComponent

Reports the derived status, formatted value, and completion ratio.

`Meter.SetValue`

查看源码

meter.SetValue(value any) *MeterComponent

Configures set value for this part. The declared type and source define the accepted value.

`Meter.Min`

查看源码

meter.Min(value any) *MeterComponent

Lower bound of the accepted value.

`Meter.Max`

查看源码

meter.Max(value any) *MeterComponent

Upper bound of the accepted value.

`Meter.Low`

查看源码

meter.Low(value any) *MeterComponent

Upper boundary of the low meter range.

`Meter.High`

查看源码

meter.High(value any) *MeterComponent

Lower boundary of the high meter range.

`Meter.Optimum`

查看源码

meter.Optimum(value any) *MeterComponent

Preferred point or range for the meter value.

`Meter.Root`

查看源码

meter.Root() *Element

Configures root for this part. The declared type and source define the accepted value.

`Meter.Track`

查看源码

meter.Track(options ...PartProps) *Element

Configures track for this part. The declared type and source define the accepted value.

Reffunc(*native.Node)—

Receives the retained native node after construction. Keep imperative work in event or lifecycle callbacks.

func(*native.Node)

查看源码

Styleany—

Reusable layout, typography, color, and interaction-state styles. Build with ui.Style() and compose with Merge.

any

查看源码

ChildrenPartChildren—

Content mounted inside the component. Compound child callbacks run after the parent context exists.

PartChildren

查看源码

Disabledany—

Prevents activation and exposes the disabled state to accessibility. Compound parts inherit a disabled root.

any

查看源码

Rolestring—

Accessibility role override. Prefer the component’s built-in semantics.

string

查看源码

FocusOnPointerany—

Whether a pointer press moves keyboard focus to the control.

any

查看源码

Groupany—

Names this element as a group for descendant interaction-state styling.

any

查看源码

AriaLabelany—

Accessible name, especially for icon-only controls or controls without a visible label.

any

查看源码

TabIndex*float64—

Controls sequential keyboard focus order. Omit to retain the component’s default focus behavior.

*float64

查看源码

OnClickfunc(*native.Event)—

Called after QuickGUI resolves an activation, including supported keyboard activation.

func(*native.Event)

查看源码

OnDoubleClickfunc(*native.Event)—

Callback for double click. The signature below lists the event payload.

func(*native.Event)

查看源码

OnContextMenufunc(*native.Event)—

Callback for context menu. The signature below lists the event payload.

func(*native.Event)

查看源码

OnPointerfunc(*native.Event)—

Callback for pointer. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseEnterfunc(*native.Event)—

Callback for mouse enter. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseLeavefunc(*native.Event)—

Callback for mouse leave. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseDownfunc(*native.Event)—

Callback for mouse down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseUpfunc(*native.Event)—

Callback for mouse up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyDownfunc(*native.Event)—

Callback for key down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyUpfunc(*native.Event)—

Callback for key up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnFocusfunc(*native.Event)—

Callback for focus. The signature below lists the event payload.

func(*native.Event)

查看源码

OnBlurfunc(*native.Event)—

Callback for blur. The signature below lists the event payload.

func(*native.Event)

查看源码

`Meter.Indicator`

查看源码

meter.Indicator(options ...PartProps) *Element

Configures indicator for this part. The declared type and source define the accepted value.

Reffunc(*native.Node)—

Receives the retained native node after construction. Keep imperative work in event or lifecycle callbacks.

func(*native.Node)

查看源码

Styleany—

Reusable layout, typography, color, and interaction-state styles. Build with ui.Style() and compose with Merge.

any

查看源码

ChildrenPartChildren—

Content mounted inside the component. Compound child callbacks run after the parent context exists.

PartChildren

查看源码

Disabledany—

Prevents activation and exposes the disabled state to accessibility. Compound parts inherit a disabled root.

any

查看源码

Rolestring—

Accessibility role override. Prefer the component’s built-in semantics.

string

查看源码

FocusOnPointerany—

Whether a pointer press moves keyboard focus to the control.

any

查看源码

Groupany—

Names this element as a group for descendant interaction-state styling.

any

查看源码

AriaLabelany—

Accessible name, especially for icon-only controls or controls without a visible label.

any

查看源码

TabIndex*float64—

Controls sequential keyboard focus order. Omit to retain the component’s default focus behavior.

*float64

查看源码

OnClickfunc(*native.Event)—

Called after QuickGUI resolves an activation, including supported keyboard activation.

func(*native.Event)

查看源码

OnDoubleClickfunc(*native.Event)—

Callback for double click. The signature below lists the event payload.

func(*native.Event)

查看源码

OnContextMenufunc(*native.Event)—

Callback for context menu. The signature below lists the event payload.

func(*native.Event)

查看源码

OnPointerfunc(*native.Event)—

Callback for pointer. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseEnterfunc(*native.Event)—

Callback for mouse enter. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseLeavefunc(*native.Event)—

Callback for mouse leave. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseDownfunc(*native.Event)—

Callback for mouse down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseUpfunc(*native.Event)—

Callback for mouse up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyDownfunc(*native.Event)—

Callback for key down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyUpfunc(*native.Event)—

Callback for key up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnFocusfunc(*native.Event)—

Callback for focus. The signature below lists the event payload.

func(*native.Event)

查看源码

OnBlurfunc(*native.Event)—

Callback for blur. The signature below lists the event payload.

func(*native.Event)

查看源码

`Meter.Label`

查看源码

meter.Label(options ...PartProps) *Element

Visible native SwiftUI control label.

Reffunc(*native.Node)—

Receives the retained native node after construction. Keep imperative work in event or lifecycle callbacks.

func(*native.Node)

查看源码

Styleany—

Reusable layout, typography, color, and interaction-state styles. Build with ui.Style() and compose with Merge.

any

查看源码

ChildrenPartChildren—

Content mounted inside the component. Compound child callbacks run after the parent context exists.

PartChildren

查看源码

Disabledany—

Prevents activation and exposes the disabled state to accessibility. Compound parts inherit a disabled root.

any

查看源码

Rolestring—

Accessibility role override. Prefer the component’s built-in semantics.

string

查看源码

FocusOnPointerany—

Whether a pointer press moves keyboard focus to the control.

any

查看源码

Groupany—

Names this element as a group for descendant interaction-state styling.

any

查看源码

AriaLabelany—

Accessible name, especially for icon-only controls or controls without a visible label.

any

查看源码

TabIndex*float64—

Controls sequential keyboard focus order. Omit to retain the component’s default focus behavior.

*float64

查看源码

OnClickfunc(*native.Event)—

Called after QuickGUI resolves an activation, including supported keyboard activation.

func(*native.Event)

查看源码

OnDoubleClickfunc(*native.Event)—

Callback for double click. The signature below lists the event payload.

func(*native.Event)

查看源码

OnContextMenufunc(*native.Event)—

Callback for context menu. The signature below lists the event payload.

func(*native.Event)

查看源码

OnPointerfunc(*native.Event)—

Callback for pointer. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseEnterfunc(*native.Event)—

Callback for mouse enter. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseLeavefunc(*native.Event)—

Callback for mouse leave. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseDownfunc(*native.Event)—

Callback for mouse down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseUpfunc(*native.Event)—

Callback for mouse up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyDownfunc(*native.Event)—

Callback for key down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyUpfunc(*native.Event)—

Callback for key up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnFocusfunc(*native.Event)—

Callback for focus. The signature below lists the event payload.

func(*native.Event)

查看源码

OnBlurfunc(*native.Event)—

Callback for blur. The signature below lists the event payload.

func(*native.Event)

查看源码

`Meter.Value`

查看源码

meter.Value(options ...PartProps) *Element

The current controlled value. Update application state from the change callback to accept a new value.

Reffunc(*native.Node)—

Receives the retained native node after construction. Keep imperative work in event or lifecycle callbacks.

func(*native.Node)

查看源码

Styleany—

Reusable layout, typography, color, and interaction-state styles. Build with ui.Style() and compose with Merge.

any

查看源码

ChildrenPartChildren—

Content mounted inside the component. Compound child callbacks run after the parent context exists.

PartChildren

查看源码

Disabledany—

Prevents activation and exposes the disabled state to accessibility. Compound parts inherit a disabled root.

any

查看源码

Rolestring—

Accessibility role override. Prefer the component’s built-in semantics.

string

查看源码

FocusOnPointerany—

Whether a pointer press moves keyboard focus to the control.

any

查看源码

Groupany—

Names this element as a group for descendant interaction-state styling.

any

查看源码

AriaLabelany—

Accessible name, especially for icon-only controls or controls without a visible label.

any

查看源码

TabIndex*float64—

Controls sequential keyboard focus order. Omit to retain the component’s default focus behavior.

*float64

查看源码

OnClickfunc(*native.Event)—

Called after QuickGUI resolves an activation, including supported keyboard activation.

func(*native.Event)

查看源码

OnDoubleClickfunc(*native.Event)—

Callback for double click. The signature below lists the event payload.

func(*native.Event)

查看源码

OnContextMenufunc(*native.Event)—

Callback for context menu. The signature below lists the event payload.

func(*native.Event)

查看源码

OnPointerfunc(*native.Event)—

Callback for pointer. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseEnterfunc(*native.Event)—

Callback for mouse enter. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseLeavefunc(*native.Event)—

Callback for mouse leave. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseDownfunc(*native.Event)—

Callback for mouse down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnMouseUpfunc(*native.Event)—

Callback for mouse up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyDownfunc(*native.Event)—

Callback for key down. The signature below lists the event payload.

func(*native.Event)

查看源码

OnKeyUpfunc(*native.Event)—

Callback for key up. The signature below lists the event payload.

func(*native.Event)

查看源码

OnFocusfunc(*native.Event)—

Callback for focus. The signature below lists the event payload.

func(*native.Event)

查看源码

OnBlurfunc(*native.Event)—

Callback for blur. The signature below lists the event payload.

func(*native.Event)

查看源码

`Element`

查看源码

part.Child(content).Style(style)

Every part returns a fluent element. Strings, numbers, elements, and deferred child factories compose directly.

ChildChild(child any) *Element—

Child appends content and returns this element. Content can be an element, native node, scalar, accessor, or node-returning construction callback.

Child(child any) *Element

查看源码

ChildrenChildren(children ...any) *Element—

Children appends multiple children in order without replacing existing content. It also accepts []any, []*Element, and []*native.Node slices as arguments. Read the retained child nodes through element.Node.Children.

Children(children ...any) *Element

查看源码

StyleStyle(style StyleBuilder) *Element—

Style merges a reusable style. Scalar accessors retain independent native bindings.

Style(style StyleBuilder) *Element

查看源码

OnClickOnClick(handler func()) *Element—

OnClick handles a click without an unused event parameter.

OnClick(handler func()) *Element

查看源码

RefRef(handler func(*native.Node)) *Element—

Ref exposes the native handle once at this point in the declaration chain.

Ref(handler func(*native.Node)) *Element

查看源码