Table of Contents

Class Sparkline

Namespace
McServerLauncher.Controls
Assembly
McServerLauncher.dll

Tiny line chart (sparkline) for the CPU/RAM history in the status cards. Renders the values as a polyline with a translucent fill underneath; newest sample at the right edge.

public class Sparkline : Control, INotifyPropertyChanged, IDataContextProvider, ILogical, IThemeVariantHost, IResourceHost, IResourceNode, IStyleHost, ISetLogicalParent, ISetInheritanceParent, ISupportInitialize, IStyleable, INamed, IInputElement, IDataTemplateHost, ISetterValue
Inheritance
AvaloniaObject
Animatable
StyledElement
Visual
Layoutable
Interactive
InputElement
Control
Sparkline
Implements
IDataContextProvider
ILogical
IThemeVariantHost
IResourceHost
IResourceNode
IStyleHost
ISetLogicalParent
ISetInheritanceParent
IStyleable
INamed
IInputElement
IDataTemplateHost
ISetterValue
Inherited Members
Control.FocusAdornerProperty
Control.TagProperty
Control.ContextMenuProperty
Control.ContextFlyoutProperty
Control.RequestBringIntoViewEvent
Control.ContextRequestedEvent
Control.LoadedEvent
Control.UnloadedEvent
Control.SizeChangedEvent
Control.GetTemplateFocusTarget()
Control.OnLoaded(RoutedEventArgs)
Control.OnUnloaded(RoutedEventArgs)
Control.OnSizeChanged(SizeChangedEventArgs)
Control.OnAttachedToVisualTreeCore(VisualTreeAttachmentEventArgs)
Control.OnDetachedFromVisualTreeCore(VisualTreeAttachmentEventArgs)
Control.OnGotFocus(GotFocusEventArgs)
Control.OnLostFocus(RoutedEventArgs)
Control.OnCreateAutomationPeer()
Control.OnPointerReleased(PointerReleasedEventArgs)
Control.OnKeyUp(KeyEventArgs)
Control.OnPropertyChanged(AvaloniaPropertyChangedEventArgs)
Control.FocusAdorner
Control.DataTemplates
Control.ContextMenu
Control.ContextFlyout
Control.IsLoaded
Control.Tag
Control.ContextRequested
Control.Loaded
Control.Unloaded
Control.SizeChanged
InputElement.FocusableProperty
InputElement.IsEnabledProperty
InputElement.IsEffectivelyEnabledProperty
InputElement.CursorProperty
InputElement.IsKeyboardFocusWithinProperty
InputElement.IsFocusedProperty
InputElement.IsHitTestVisibleProperty
InputElement.IsPointerOverProperty
InputElement.IsTabStopProperty
InputElement.GotFocusEvent
InputElement.LostFocusEvent
InputElement.KeyDownEvent
InputElement.KeyUpEvent
InputElement.TabIndexProperty
InputElement.TextInputEvent
InputElement.TextInputMethodClientRequestedEvent
InputElement.PointerEnteredEvent
InputElement.PointerExitedEvent
InputElement.PointerMovedEvent
InputElement.PointerPressedEvent
InputElement.PointerReleasedEvent
InputElement.PointerCaptureLostEvent
InputElement.PointerWheelChangedEvent
InputElement.TappedEvent
InputElement.HoldingEvent
InputElement.DoubleTappedEvent
InputElement.Focus(NavigationMethod, KeyModifiers)
InputElement.OnKeyDown(KeyEventArgs)
InputElement.OnTextInput(TextInputEventArgs)
InputElement.OnPointerEntered(PointerEventArgs)
InputElement.OnPointerExited(PointerEventArgs)
InputElement.OnPointerMoved(PointerEventArgs)
InputElement.OnPointerPressed(PointerPressedEventArgs)
InputElement.OnPointerCaptureLost(PointerCaptureLostEventArgs)
InputElement.OnPointerWheelChanged(PointerWheelEventArgs)
InputElement.UpdateIsEffectivelyEnabled()
InputElement.Focusable
InputElement.IsEnabled
InputElement.Cursor
InputElement.IsKeyboardFocusWithin
InputElement.IsFocused
InputElement.IsHitTestVisible
InputElement.IsPointerOver
InputElement.IsTabStop
InputElement.IsEffectivelyEnabled
InputElement.TabIndex
InputElement.KeyBindings
InputElement.IsEnabledCore
InputElement.GestureRecognizers
InputElement.GotFocus
InputElement.LostFocus
InputElement.KeyDown
InputElement.KeyUp
InputElement.TextInput
InputElement.TextInputMethodClientRequested
InputElement.PointerEntered
InputElement.PointerExited
InputElement.PointerMoved
InputElement.PointerPressed
InputElement.PointerReleased
InputElement.PointerCaptureLost
InputElement.PointerWheelChanged
InputElement.Tapped
InputElement.Holding
InputElement.DoubleTapped
Interactive.RaiseEvent(RoutedEventArgs)
Interactive.BuildEventRoute(RoutedEvent)
Layoutable.DesiredSizeProperty
Layoutable.WidthProperty
Layoutable.HeightProperty
Layoutable.MinWidthProperty
Layoutable.MaxWidthProperty
Layoutable.MinHeightProperty
Layoutable.MaxHeightProperty
Layoutable.MarginProperty
Layoutable.HorizontalAlignmentProperty
Layoutable.VerticalAlignmentProperty
Layoutable.UseLayoutRoundingProperty
Layoutable.UpdateLayout()
Layoutable.ApplyTemplate()
Layoutable.Measure(Size)
Layoutable.Arrange(Rect)
Layoutable.InvalidateMeasure()
Layoutable.InvalidateArrange()
Layoutable.AffectsMeasure<T>(params AvaloniaProperty[])
Layoutable.AffectsArrange<T>(params AvaloniaProperty[])
Layoutable.MeasureCore(Size)
Layoutable.MeasureOverride(Size)
Layoutable.ArrangeCore(Rect)
Layoutable.ArrangeOverride(Size)
Layoutable.OnMeasureInvalidated()
Layoutable.OnVisualParentChanged(Visual, Visual)
Layoutable.Width
Layoutable.Height
Layoutable.MinWidth
Layoutable.MaxWidth
Layoutable.MinHeight
Layoutable.MaxHeight
Layoutable.Margin
Layoutable.HorizontalAlignment
Layoutable.VerticalAlignment
Layoutable.DesiredSize
Layoutable.IsMeasureValid
Layoutable.IsArrangeValid
Layoutable.UseLayoutRounding
Layoutable.EffectiveViewportChanged
Layoutable.LayoutUpdated
Visual.BoundsProperty
Visual.ClipToBoundsProperty
Visual.ClipProperty
Visual.IsVisibleProperty
Visual.OpacityProperty
Visual.OpacityMaskProperty
Visual.EffectProperty
Visual.HasMirrorTransformProperty
Visual.RenderTransformProperty
Visual.RenderTransformOriginProperty
Visual.FlowDirectionProperty
Visual.VisualParentProperty
Visual.ZIndexProperty
Visual.GetFlowDirection(Visual)
Visual.SetFlowDirection(Visual, FlowDirection)
Visual.InvalidateVisual()
Visual.AffectsRender<T>(params AvaloniaProperty[])
Visual.OnAttachedToVisualTree(VisualTreeAttachmentEventArgs)
Visual.OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs)
Visual.InvalidateMirrorTransform()
Visual.Bounds
Visual.ClipToBounds
Visual.Clip
Visual.IsEffectivelyVisible
Visual.IsVisible
Visual.Opacity
Visual.OpacityMask
Visual.Effect
Visual.HasMirrorTransform
Visual.RenderTransform
Visual.RenderTransformOrigin
Visual.FlowDirection
Visual.ZIndex
Visual.VisualChildren
Visual.VisualRoot
Visual.BypassFlowDirectionPolicies
Visual.AttachedToVisualTree
Visual.DetachedFromVisualTree
StyledElement.DataContextProperty
StyledElement.NameProperty
StyledElement.ParentProperty
StyledElement.TemplatedParentProperty
StyledElement.ThemeProperty
StyledElement.BeginInit()
StyledElement.EndInit()
StyledElement.ApplyStyling()
StyledElement.InitializeIfNeeded()
StyledElement.OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs)
StyledElement.OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs)
StyledElement.OnDataContextBeginUpdate()
StyledElement.OnDataContextEndUpdate()
StyledElement.OnInitialized()
StyledElement.Name
StyledElement.Classes
StyledElement.DataContext
StyledElement.IsInitialized
StyledElement.Styles
StyledElement.StyleKey
StyledElement.Resources
StyledElement.TemplatedParent
StyledElement.Theme
StyledElement.LogicalChildren
StyledElement.PseudoClasses
StyledElement.StyleKeyOverride
StyledElement.Parent
StyledElement.ActualThemeVariant
StyledElement.AttachedToLogicalTree
StyledElement.DetachedFromLogicalTree
StyledElement.DataContextChanged
StyledElement.Initialized
StyledElement.ResourcesChanged
StyledElement.ActualThemeVariantChanged
Animatable.TransitionsProperty
Animatable.OnPropertyChangedCore(AvaloniaPropertyChangedEventArgs)
Animatable.Transitions
AvaloniaObject.CheckAccess()
AvaloniaObject.VerifyAccess()
AvaloniaObject.ClearValue(AvaloniaProperty)
AvaloniaObject.ClearValue<T>(AvaloniaProperty<T>)
AvaloniaObject.ClearValue<T>(StyledProperty<T>)
AvaloniaObject.ClearValue<T>(DirectPropertyBase<T>)
AvaloniaObject.GetHashCode()
AvaloniaObject.GetValue(AvaloniaProperty)
AvaloniaObject.GetValue<T>(StyledProperty<T>)
AvaloniaObject.GetValue<T>(DirectPropertyBase<T>)
AvaloniaObject.GetBaseValue<T>(StyledProperty<T>)
AvaloniaObject.IsAnimating(AvaloniaProperty)
AvaloniaObject.IsSet(AvaloniaProperty)
AvaloniaObject.SetValue<T>(StyledProperty<T>, T, BindingPriority)
AvaloniaObject.SetValue<T>(DirectPropertyBase<T>, T)
AvaloniaObject.SetCurrentValue<T>(StyledProperty<T>, T)
AvaloniaObject.Bind(AvaloniaProperty, IBinding)
AvaloniaObject.CoerceValue(AvaloniaProperty)
AvaloniaObject.RaisePropertyChanged<T>(DirectPropertyBase<T>, T, T)
AvaloniaObject.SetAndRaise<T>(DirectPropertyBase<T>, ref T, T)
AvaloniaObject.InheritanceParent
AvaloniaObject.this[AvaloniaProperty]
AvaloniaObject.this[IndexerDescriptor]
AvaloniaObject.PropertyChanged

Fields

MaxValueProperty

Fixed scale ceiling (e.g. 100 for a CPU %). 0 = auto-scale to the data. When set, the scale still grows if a sample exceeds it, so the line never clips.

public static readonly StyledProperty<double> MaxValueProperty

Field Value

StyledProperty<double>

StrokeProperty 

public static readonly StyledProperty<IBrush?> StrokeProperty

Field Value

StyledProperty<IBrush>

ValuesProperty 

public static readonly StyledProperty<IReadOnlyList<double>?> ValuesProperty

Field Value

StyledProperty<IReadOnlyList<double>>

Properties

MaxValue 

public double MaxValue { get; set; }

Property Value

double

Stroke 

public IBrush? Stroke { get; set; }

Property Value

IBrush

Values 

public IReadOnlyList<double>? Values { get; set; }

Property Value

IReadOnlyList<double>

Methods

BuildPoints(IReadOnlyList<double>, double, double, double)

Maps samples to pixel points inside a width×height box: X spreads the samples evenly (newest at the right edge), Y scales 0..scale to bottom..top. Kept static and pure so the scaling math can be exercised in tests without any rendering infrastructure.

public static Point[] BuildPoints(IReadOnlyList<double> values, double width, double height, double maxValue)

Parameters

values IReadOnlyList<double>
width double
height double
maxValue double

Returns

Point[]

Render(DrawingContext)

Renders the visual to a Avalonia.Media.DrawingContext.

public override void Render(DrawingContext context)

Parameters

context DrawingContext

The drawing context.

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