BitmapDataExtensionsFillRoundedRectangleAsync(IReadWriteBitmapData, Brush, Rectangle, Int32, Int32, Int32, Int32, DrawingOptions, TaskConfig) Method

Fills a rounded rectangle with the specified Brush asynchronously, applying a custom corner radius to each corner.

Definition

Namespace: KGySoft.Drawing.Shapes
Assembly: KGySoft.Drawing.Core (in KGySoft.Drawing.Core.dll) Version: 10.0.0-rc.1
C#
public static Task<bool> FillRoundedRectangleAsync(
	this IReadWriteBitmapData bitmapData,
	Brush brush,
	Rectangle bounds,
	int radiusTopLeft,
	int radiusTopRight,
	int radiusBottomRight,
	int radiusBottomLeft,
	DrawingOptions? drawingOptions = null,
	TaskConfig? asyncConfig = null
)

Parameters

bitmapData  IReadWriteBitmapData
The IReadWriteBitmapData instance to draw on.
brush  Brush
The Brush to use for filling the rounded rectangle.
bounds  Rectangle
The bounding rectangle that defines the rounded rectangle.
radiusTopLeft  Int32
The size of the top-left corner radius of the rounded rectangle.
radiusTopRight  Int32
The size of the top-right corner radius of the rounded rectangle.
radiusBottomRight  Int32
The size of the bottom-right corner radius of the rounded rectangle.
radiusBottomLeft  Int32
The size of the bottom-left corner radius of the rounded rectangle.
drawingOptions  DrawingOptions  (Optional)
A DrawingOptions instance that specifies the drawing options to use. If , then the default options are used. This parameter is optional.
Default value: .
asyncConfig  TaskConfig  (Optional)
The configuration of the asynchronous operation such as parallelization, cancellation, reporting progress, etc. When Progress is set in this parameter, then this library always passes a DrawingOperation instance to the generic methods of the IAsyncProgress interface. This parameter is optional.
Default value: .

Return Value

TaskBoolean
A task that represents the asynchronous operation. Its result is , if the operation completed successfully, or , if the operation has been canceled and the ThrowIfCanceled property in asyncConfig parameter was .

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IReadWriteBitmapData. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

When filling a rounded rectangle, the right/bottom values of the bounding rectangle are exclusive, so if the width or height is zero, then nothing is drawn.

If a corner radius parameter is negative, its absolute value will be used. If the sum of any adjacent corner radius parameters is greater than the corresponding side of the bounding rectangle, then all corner radius parameters will be scaled down proportionally to fit into the bounding rectangle.

This method does not use optimized shortcuts. If the same rounded rectangle is filled repeatedly, creating a Path with PreferCaching enabled and adding the rounded rectangle to it can provide a better performance.

This method is not a blocking call even if the MaxDegreeOfParallelism property of the asyncConfig parameter is 1.

Exceptions

ArgumentNullExceptionbitmapData or brush is .
OverflowExceptionThe coordinates (after a possible transformation specified in drawingOptions) are outside the bounds of an int value.
TaskCanceledExceptionThe operation has been canceled and the ThrowIfCanceled property in asyncConfig was . This exception is thrown when the result is awaited.

See Also