BitmapDataExtensionsMakeOpaque(IReadWriteBitmapData, Color32, IDitherer, ParallelConfig) Method
Makes this bitmapData opaque using the specified backColor.
Namespace: KGySoft.Drawing.ImagingAssembly: KGySoft.Drawing.Core (in KGySoft.Drawing.Core.dll) Version: 10.0.0-rc.1
public static bool MakeOpaque(
this IReadWriteBitmapData bitmapData,
Color32 backColor,
IDitherer? ditherer,
ParallelConfig? parallelConfig
)
<ExtensionAttribute>
Public Shared Function MakeOpaque (
bitmapData As IReadWriteBitmapData,
backColor As Color32,
ditherer As IDitherer,
parallelConfig As ParallelConfig
) As Boolean
public:
[ExtensionAttribute]
static bool MakeOpaque(
IReadWriteBitmapData^ bitmapData,
Color32 backColor,
IDitherer^ ditherer,
ParallelConfig^ parallelConfig
)
[<ExtensionAttribute>]
static member MakeOpaque :
bitmapData : IReadWriteBitmapData *
backColor : Color32 *
ditherer : IDitherer *
parallelConfig : ParallelConfig -> bool
- bitmapData IReadWriteBitmapData
- The IReadWriteBitmapData to make opaque.
- backColor Color32
- Pixels with alpha in bitmapData will be blended with this color.
The Color32.A field of the specified color is ignored.
- ditherer IDitherer
- An optional IDitherer instance to dither the result of the transformation if the inverse of the bitmapData
has no exact representation with its PixelFormat.
- parallelConfig ParallelConfig
- The configuration of the 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.
If , then the degree of parallelization is configured automatically.
Boolean, if the operation completed successfully.
, if the operation has been canceled and the
ThrowIfCanceled property
of the
parallelConfig parameter was
.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).
This method blocks the caller as it executes synchronously, though the
parallelConfig parameter allows configuring the degree of parallelism,
cancellation and progress reporting. Use the
BeginMakeOpaque or
MakeOpaqueAsync (in .NET Framework 4.0 and above) methods to perform the operation asynchronously.
If bitmapData has an indexed PixelFormat and ditherer is ,
then its palette entries are tried to be transformed instead of the actual pixels in the first place (if it is supported by bitmapData).
To transform the colors of an indexed IBitmapData without changing the palette specify a non- ditherer.
Transforming the palette is both faster and provides a better result.
If ditherer is , this method attempts to preserve the original color depth, including wide pixel formats.
The ditherer may have no effect for KnownPixelFormats with more than 16 bits-per-pixel and for grayscale formats.
