Class ChartRenderer

Provides the base implementation for chart rendering functionality, handling drawing operations and text measurement for chart elements.

Inheritance
System.Object
ChartRenderer
CartesianRenderer
FunnelRenderer
PieRenderer
PolarRenderer
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.ChartView.dll

Syntax

public class ChartRenderer : IChartRenderer

Constructors

ChartRenderer(ChartArea)

Initializes a new instance of the ChartRenderer class with the specified chart area.

Declaration
public ChartRenderer(ChartArea area)
Parameters
ChartArea area

The chart area that this renderer will be associated with.

Properties

Graphics

Gets the System.Drawing.Graphics object from the current rendering surface.

Declaration
public Graphics Graphics { get; }
Property Value
System.Drawing.Graphics

Surface

Gets or sets the rendering surface used for drawing operations.

Declaration
public object Surface { get; }
Property Value
System.Object

Implements

Methods

Draw(Object)

Draws the chart using the specified rendering context.

Declaration
public virtual void Draw(object context)
Parameters
System.Object context

The graphics context used for rendering operations.
Implements

GetDistanceBetweenPoints(PointF, PointF)

Calculates the Euclidean distance between two points.

Declaration
public float GetDistanceBetweenPoints(PointF start, PointF end)
Parameters
System.Drawing.PointF start

The starting point.
System.Drawing.PointF end

The ending point.
Returns
System.Single

The distance between the two points as a float value.

HitTest(Int32, Int32)

Performs hit testing to find the data point at the specified coordinates.

Declaration
public virtual DataPoint HitTest(int x, int y)
Parameters
System.Int32 x

The x-coordinate for hit testing.
System.Int32 y

The y-coordinate for hit testing.
Returns
DataPoint

The DataPoint at the specified coordinates, or null if no data point is found.
Implements

Initialize()

Initializes the renderer by setting up smart labels controller and calculating label positions if available.

Declaration
protected virtual void Initialize()

Invalidate(Object)

Invalidates the specified model to trigger a redraw operation.

Declaration
public virtual void Invalidate(object model)
Parameters
System.Object model

The model object to invalidate.
Implements

MeasureRotatedLabels(String, Object, Double)

Measures the size of rotated text labels considering the rotation angle.

Declaration
public virtual RadSize MeasureRotatedLabels(string text, object context, double rotationAngle)
Parameters
System.String text

The text to measure.
System.Object context

The font context used for measurement.
System.Double rotationAngle

The rotation angle in degrees.
Returns
RadSize

A RadSize representing the measured dimensions of the rotated text.
Implements

MeasureText(String, Object)

Measures the size of the specified text using the provided font context.

Declaration
public virtual RadSize MeasureText(string text, object context)
Parameters
System.String text

The text to measure.
System.Object context

The font context used for measurement.
Returns
RadSize

A RadSize representing the measured dimensions of the text.
Implements

ToPoint(RadPoint)

Converts a RadPoint to a System.Drawing.Point with rounded coordinates.

Declaration
public static Point ToPoint(RadPoint point)
Parameters
RadPoint point

The RadPoint to convert.
Returns
System.Drawing.Point

A System.Drawing.Point with rounded integer coordinates.

ToPointF(RadPoint)

Converts a RadPoint to a System.Drawing.PointF.

Declaration
public static PointF ToPointF(RadPoint point)
Parameters
RadPoint point

The RadPoint to convert.
Returns
System.Drawing.PointF

A System.Drawing.PointF with equivalent coordinates.

ToRectangle(RadRect)

Converts a RadRect to a System.Drawing.Rectangle with rounded coordinates.

Declaration
public static Rectangle ToRectangle(RadRect rect)
Parameters
RadRect rect

The RadRect to convert.
Returns
System.Drawing.Rectangle

A System.Drawing.Rectangle with rounded integer coordinates.

ToRectangleF(RadRect)

Converts a RadRect to a System.Drawing.RectangleF.

Declaration
public static RectangleF ToRectangleF(RadRect rect)
Parameters
RadRect rect

The RadRect to convert.
Returns
System.Drawing.RectangleF

A System.Drawing.RectangleF with equivalent dimensions.

ToSize(RadSize)

Converts a RadSize to a System.Drawing.Size with rounded coordinates.

Declaration
public static Size ToSize(RadSize size)
Parameters
RadSize size

The RadSize to convert.
Returns
System.Drawing.Size

A System.Drawing.Size with rounded integer dimensions.

ToSizeF(RadSize)

Converts a RadSize to a System.Drawing.SizeF.

Declaration
public static SizeF ToSizeF(RadSize size)
Parameters
RadSize size

The RadSize to convert.
Returns
System.Drawing.SizeF

A System.Drawing.SizeF with equivalent dimensions.

Extension Methods