| GrayscaleEffect Class |
Converts an image to monochromatic gray.
Inheritance HierarchySystemObject
Microsoft.Graphics.Canvas.EffectsGrayscaleEffect
Microsoft.Graphics.Canvas.EffectsGrayscaleEffect
Namespace: Microsoft.Graphics.Canvas.Effects
Assembly: Microsoft.Graphics.Canvas (in Microsoft.Graphics.Canvas.dll) Version: 0.0.0.0
SyntaxC#
public sealed class GrayscaleEffect : ICanvasEffect, IGraphicsEffect, IGraphicsEffectSource, ICanvasImage, IDisposable
The GrayscaleEffect type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | GrayscaleEffect | Initializes a new instance of the GrayscaleEffect class. |
Properties| Name | Description | |
|---|---|---|
 | BufferPrecision | Specifies what precision to use for intermediate buffers when drawing this effect. |
| CacheOutput | Enables caching the output from drawing this effect. |
| Name | Attaches a user-defined name string to the effect. |
| Source | Gets or sets the input source for Grayscale effect. |
Methods| Name | Description | |
|---|---|---|
| Dispose | Releases all resources used by the effect. |
| GetBounds(ICanvasResourceCreator) | Retrieves the bounds of this GrayscaleEffect. |
| GetBounds(ICanvasResourceCreator, Matrix3x2) | Retrieves the bounds of this GrayscaleEffect. |
| GetInvalidRectangles | Queries what regions of the effect output have changed since it was last drawn. |
 | GetRequiredSourceRectangle | Queries what part of an effect source image is needed to draw an output region. |
| GetRequiredSourceRectangles | Queries what parts of the effect source images are needed to draw an output region. |
| InvalidateSourceRectangle | Notifies the effect that one of its source images has changed. |
RemarksEffect inputs and outputs are assumed to be in premultiplied alpha format, but this effect operates internally on straight alpha data, so its input values will be unpremultiplied, then the grayscale conversion applied, and finally the result converted back to premultiplied format.
See Also