AreaChart class

Namespace: Arlecchino.Widgets.Readouts · Assembly: Arlecchino

A series drawn as a filled area over as many rows as it is given, where Sparkline fits one. A cell carries two samples side by side, so it holds twice the history a row of blocks would.

public sealed class AreaChart : IArlecchinoWidget

Implements IArlecchinoWidget

Constructors

Member	Summary
AreaChart()

Properties

Member	Summary
Bands	Where the color changes as the fill climbs, in the same units as the values and in ascending order. A chart given none is drawn in AreaChart.Style throughout.
Invert	Draws it hanging from the top rather than standing on the bottom, for the second half of a mirrored pair — what comes in above, what goes out below.
Maximum	The value a full chart stands for. The largest of the drawn values when left alone.
Minimum	The value an empty chart stands for. The smallest of the drawn values when left alone.
Style	Color of the fill outside every band. The theme's active color when left alone.
Symbols	What to draw with, which is the application's own Glyphs.Graph when left alone. One chart can differ without every other one being told.
Values	The numbers to draw, the oldest first. Nothing is copied, so a ring buffer the application appends to between frames is the right thing to hand over.

Methods

Member	Summary
Draw(SurfaceRegion)	Draws the chart over every row of the region and returns what is left, which is nothing. A chart fills what it is given, so hand over the pane it belongs in.

Constructors in detail

AreaChart()

public AreaChart();

Properties in detail

Bands

public IReadOnlyList<GaugeBand> Bands { get; init; }

Where the color changes as the fill climbs, in the same units as the values and in ascending order. A chart given none is drawn in AreaChart.Style throughout.

Type IReadOnlyList<T><GaugeBand>

Invert

public bool Invert { get; init; }

Draws it hanging from the top rather than standing on the bottom, for the second half of a mirrored pair — what comes in above, what goes out below.

Type bool

Maximum

public Nullable<decimal> Maximum { get; init; }

The value a full chart stands for. The largest of the drawn values when left alone.

Type Nullable<T><decimal>

Minimum

public Nullable<decimal> Minimum { get; init; }

The value an empty chart stands for. The smallest of the drawn values when left alone.

Type Nullable<T><decimal>

Style

public IArlecchinoColor? Style { get; init; }

Color of the fill outside every band. The theme's active color when left alone.

Type IArlecchinoColor

Symbols

public Nullable<GraphSymbols> Symbols { get; set; }

What to draw with, which is the application's own Glyphs.Graph when left alone. One chart can differ without every other one being told.

Type Nullable<T><GraphSymbols>

Values

public IReadOnlyList<decimal> Values { get; set; }

The numbers to draw, the oldest first. Nothing is copied, so a ring buffer the application appends to between frames is the right thing to hand over.

Type IReadOnlyList<T><decimal>

Methods in detail

Draw(SurfaceRegion)

public SurfaceRegion Draw(SurfaceRegion region);

Draws the chart over every row of the region and returns what is left, which is nothing. A chart fills what it is given, so hand over the pane it belongs in.

Parameters

Name	Type	Description
region	SurfaceRegion	Where to draw.

Returns SurfaceRegion — An empty region.