Class BOBTreemapChart<TY>

Namespace

BlazOrbit.Charts.Components

Assembly

BlazOrbit.Charts.dll

Hierarchical treemap - subdivides the chart area into nested rectangles whose size is proportional to each node's value. Uses the squarified algorithm (Bruls / Huijing / van Wijk, 2000) so rectangles stay close to square, making adjacent magnitudes easier to compare than the long thin strips of the classic slice-and-dice approach.

public sealed class BOBTreemapChart<TY> : BOBChartBase<object, TY>, IDataVisualizationFamilyComponent

Type Parameters

TY

Numeric type of the node values.

Inheritance

object

ComponentBase

BOBComponentBase

BOBChartBase<object, TY>

BOBTreemapChart<TY>

Implements

IDataVisualizationFamilyComponent

Inherited Members

BOBChartBase<object, TY>.ToggleSeriesAsync(string)

BOBChartBase<object, TY>.OnResize(double, double)

BOBChartBase<object, TY>.DisposeAsync()

BOBChartBase<object, TY>.ExportAsPngAsync()

BOBChartBase<object, TY>.Width

BOBChartBase<object, TY>.Height

BOBChartBase<object, TY>.AspectRatio

BOBChartBase<object, TY>.ShowExportButton

BOBChartBase<object, TY>.ExportFileName

BOBChartBase<object, TY>.ShowLegend

BOBChartBase<object, TY>.LegendPosition

BOBChartBase<object, TY>.OnLegendToggle

BOBChartBase<object, TY>.OnChartReady

BOBChartBase<object, TY>.Theme

BOBChartBase<object, TY>.TooltipTemplate

BOBChartBase<object, TY>.TooltipFormat

BOBChartBase<object, TY>.Animated

BOBChartBase<object, TY>.AnimationDuration

BOBComponentBase.DisposeAsync()

BOBComponentBase.AdditionalAttributes

BOBComponentBase.ComputedAttributes

Constructors

BOBTreemapChart()

public BOBTreemapChart()

Properties

MinLabelSize

Minimum width / height (in pixels) a cell must reach before its label is drawn. Smaller cells skip the label to avoid visual clutter. Default 32.

[Parameter]
public double MinLabelSize { get; set; }

Property Value

double

Nodes

Hierarchical dataset rendered into nested rectangles.

[Parameter]
public IEnumerable<BOBChartTreemapNode<TY>>? Nodes { get; set; }

Property Value

IEnumerable<BOBChartTreemapNode<TY>>

OnNodeClick

Fired when the user clicks any cell (leaf or branch). Carries the node, its root-to-self path and its depth in the tree.

[Parameter]
public EventCallback<BOBChartTreemapClickArgs<TY>> OnNodeClick { get; set; }

Property Value

EventCallback<BOBChartTreemapClickArgs<TY>>

Padding

Pixel padding inside each branch rect so child rectangles don't bleed into the parent's border. Default 2.

[Parameter]
public double Padding { get; set; }

Property Value

double

Methods

BuildAriaLabel()

Default ARIA label for the chart's <svg> root. Subclasses override to inject series / value summaries (improves screen-reader experience).

protected override string BuildAriaLabel()

Returns

string

RenderSvg(RenderTreeBuilder)

Concrete charts override this to emit SVG content. The supplied builder is positioned inside the <svg> root, so implementations only need to add geometry primitives (lines, paths, rects, text). Sequence numbers must remain unique within the override.

protected override void RenderSvg(RenderTreeBuilder builder)

Parameters

builder RenderTreeBuilder

Render tree builder positioned inside the SVG root.