SKManagedStream Class
Definition
Important
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Wraps a Stream into a SKStreamAsset (a seekable, rewindable Skia stream)
public class SKManagedStream : SkiaSharp.SKAbstractManagedStream- Inheritance
Examples
public static void BitmapShader (SKCanvas canvas, int width, int height)
{
var assembly = typeof(Demos).GetTypeInfo ().Assembly;
// load the image from the embedded resource stream
using (var resource = assembly.GetManifestResourceStream ("embedded.png"))
using (var stream = new SKManagedStream(resource))
using (var source = SKBitmap.Decode (stream)) {
var matrix = SKMatrix.MakeRotation (30.0f);
using (var shader = SKShader.CreateBitmap (source, SKShaderTileMode.Repeat, SKShaderTileMode.Repeat, matrix))
using (var paint = new SKPaint ()) {
paint.IsAntialias = true;
paint.Shader = shader;
// tile the bitmap
canvas.Clear (SKColors.White);
canvas.DrawPaint (paint);
}
}
}
Remarks
The following example shows how to wrap a Stream that represents a stream into an embedded resource in an assembly and use it with SkiaSharp APIs that use resources:
Constructors
| SKManagedStream(Stream, Boolean) |
Creates a new read-only stream from a Stream, can optionally dispose the provided stream when this stream is disposed. |
| SKManagedStream(Stream) |
Creates a new read-only stream from a Stream. |
Properties
| Handle |
Gets or sets the handle to the underlying native object. (Inherited from SKObject) |
| HasLength |
Gets a value indicating whether this stream can report it's total length. (Inherited from SKStream) |
| HasPosition |
Gets a value indicating whether this stream can report it's current position. (Inherited from SKStream) |
| IgnorePublicDispose |
Gets or sets a value indicating whether the call the public Dispose() should be no-op. (Inherited from SKNativeObject) |
| IsAtEnd |
Gets a value indicating whether all the bytes in the stream have been read. (Inherited from SKStream) |
| IsDisposed |
Gets or sets a value indicating whether the object has already been disposed. (Inherited from SKNativeObject) |
| Length |
Gets the total length of the stream. If this is not supported, the length will be reported as 0. (Inherited from SKStream) |
| OwnsHandle |
Gets a value indicating whether this object should destroy the underlying native object. (Inherited from SKObject) |
| Position |
Gets the current position in the stream. If this is not supported, the position will be reported as 0. (Inherited from SKStream) |
Methods
| CopyTo(SKWStream) |
Copy the contents of this stream into the destination stream. |
| Dispose() |
Releases all resources used by this SKNativeObject. (Inherited from SKNativeObject) |
| Dispose(Boolean) |
Releases the unmanaged resources used by the SKManagedStream and optionally releases the managed resources. |
| DisposeInternal() |
Triggers a dispose, ignoring the value of IgnorePublicDispose. (Inherited from SKNativeObject) |
| DisposeManaged() |
Implemented by derived SKNativeObject types to destroy any managed objects. |
| DisposeManaged() |
Implemented by derived SKObject types to destroy any managed objects. (Inherited from SKObject) |
| DisposeNative() |
Implemented by derived SKObject types to destroy any native objects. (Inherited from SKAbstractManagedStream) |
| DisposeUnownedManaged() | (Inherited from SKObject) |
| GetMemoryBase() |
Returns the memory address of the data if the stream is a memory stream. (Inherited from SKStream) |
| Move(Int32) |
Seeks to an relative offset in the stream. (Inherited from SKStream) |
| Move(Int64) |
Seeks to an relative offset in the stream. (Inherited from SKStream) |
| OnCreateNew() |
Implemented by derived SKAbstractManagedStream types to copy the current stream. |
| OnDuplicate() |
Implemented by derived SKAbstractManagedStream types to duplicate the current stream. |
| OnDuplicate() |
Implemented by derived SKAbstractManagedStream types to duplicate the current stream. (Inherited from SKAbstractManagedStream) |
| OnFork() |
Implemented by derived SKAbstractManagedStream types to fork the current stream. |
| OnFork() |
Implemented by derived SKAbstractManagedStream types to fork the current stream. (Inherited from SKAbstractManagedStream) |
| OnGetLength() |
Implemented by derived SKAbstractManagedStream types to return the total length of the stream. |
| OnGetPosition() |
Implemented by derived SKAbstractManagedStream types to get the current position in the stream |
| OnHasLength() |
Implemented by derived SKAbstractManagedStream types to indicate whether this stream can report it's total length. |
| OnHasPosition() |
Implemented by derived SKAbstractManagedStream types to indicate whether this stream can report it's current position. |
| OnIsAtEnd() |
Implemented by derived SKAbstractManagedStream types to indicate whether all the bytes in the stream have been read. |
| OnMove(Int32) |
Implemented by derived SKAbstractManagedStream types to seek to a relative offset. |
| OnPeek(IntPtr, IntPtr) |
Implemented by derived SKAbstractManagedStream types to copy the specified number of bytes into the specified buffer. |
| OnRead(IntPtr, IntPtr) |
Implemented by derived SKAbstractManagedStream types to copy the specified number of bytes into the specified buffer. |
| OnRewind() |
Implemented by derived SKAbstractManagedStream types to rewind the current stream. |
| OnSeek(IntPtr) |
Implemented by derived SKAbstractManagedStream types to seek to an absolute position. |
| Peek(IntPtr, Int32) |
Attempt to peek at |
| Read(Byte[], Int32) |
Reads a copy of the specified number of bytes into the provided buffer. (Inherited from SKStream) |
| Read(IntPtr, Int32) |
Reads a copy of the specified number of bytes into the provided buffer. (Inherited from SKStream) |
| ReadBool() |
Read a single boolean. (Inherited from SKStream) |
| ReadBool(Boolean) |
Read a single boolean. (Inherited from SKStream) |
| ReadByte() |
Read a single byte. (Inherited from SKStream) |
| ReadByte(Byte) |
Read a single byte. (Inherited from SKStream) |
| ReadInt16() |
Read a single 16-bit integer. (Inherited from SKStream) |
| ReadInt16(Int16) |
Read a single 16-bit integer. (Inherited from SKStream) |
| ReadInt32() |
Read a single 32-bit integer. (Inherited from SKStream) |
| ReadInt32(Int32) |
Read a single 32-bit integer. (Inherited from SKStream) |
| ReadSByte() |
Read a single, signed byte. (Inherited from SKStream) |
| ReadSByte(SByte) |
Read a single, signed byte. (Inherited from SKStream) |
| ReadUInt16() |
Read a single, unsigned 16-bit integer. (Inherited from SKStream) |
| ReadUInt16(UInt16) |
Read a single, unsigned 16-bit integer. (Inherited from SKStream) |
| ReadUInt32() |
Read a single, unsigned 32-bit integer. (Inherited from SKStream) |
| ReadUInt32(UInt32) |
Read a single, unsigned 32-bit integer. (Inherited from SKStream) |
| Rewind() |
Rewinds to the beginning of the stream. (Inherited from SKStream) |
| Seek(Int32) |
Seeks to an absolute position in the stream. (Inherited from SKStream) |
| Skip(Int32) |
Moves the current position on by the specified number of bytes. (Inherited from SKStream) |
| ToMemoryStream() |
Copies the contents of this stream into a new memory stream. |
