C# 클래스 Microsoft.DwayneNeed.Media.Imaging.ChainedBitmap

The ChainedBitmap class is the base class for custom bitmaps that processes the content of another source.
The default implementation of the BitmapSource virtuals is to delegate to the source. This makes sense for most properties like DpiX, DpiY, PixelWidth, PixelHeight, etc, as in many scenarios these properties are the same for the entire chain of bitmap sources. However, derived classes should pay special attention to the Format property. Many bitmap processors only support a limited number of pixel formats, and they should return this for the Format property. ChainedBitmap will take care of converting the pixel format as needed in the base implementation of CopyPixels.
상속: CustomBitmap
파일 보기 프로젝트 열기: cplotts/WPFSLBlendModeFx 1 사용 예제들

공개 프로퍼티들

프로퍼티 타입 설명
SourceProperty System.Windows.DependencyProperty

보호된 메소드들

메소드 설명
CopyCore ( CustomBitmap original, bool useCurrentValue, bool willBeFrozen ) : void

Copies data into a cloned instance.

Override this method if you have additional non-DP state that should be transfered to clones.

CopyPixelsCore ( System.Windows.Int32Rect sourceRect, int stride, int bufferSize, IntPtr buffer ) : void

Requests pixels from the ChainedCustomBitmapSource.

This implementation simply delegates to the source, if present.

CreateInstanceCore ( ) : System.Windows.Freezable

Creates an instance of the ChainedBitmap class.
FreezeCore ( bool isChecking ) : bool

Transitions this instance into a thread-safe, read-only mode.

Override this method if you have additional non-DP state that should be frozen along with the instance.

OnSourcePropertyChanged ( System.Windows.DependencyPropertyChangedEventArgs e ) : void

비공개 메소드들

메소드 설명
OnSourceDecodeFailed ( object sender, ExceptionEventArgs e ) : void
OnSourceDownloadCompleted ( object sender, EventArgs e ) : void
OnSourceDownloadFailed ( object sender, ExceptionEventArgs e ) : void
OnSourceDownloadProgress ( object sender, System.Windows.Media.Imaging.DownloadProgressEventArgs e ) : void
OnSourcePropertyChanged ( DependencyObject d, System.Windows.DependencyPropertyChangedEventArgs e ) : void

메소드 상세

CopyCore() 보호된 메소드

Copies data into a cloned instance.
Override this method if you have additional non-DP state that should be transfered to clones.
protected CopyCore ( CustomBitmap original, bool useCurrentValue, bool willBeFrozen ) : void
original CustomBitmap /// The original instance to copy data from. ///
useCurrentValue bool /// Whether or not to copy the current value of expressions, or the /// expressions themselves. ///
willBeFrozen bool /// Indicates whether or not the clone will be frozen. If the /// clone will be immediately frozen, there is no need to clone /// data that is already frozen, you can just share the instance. ///
리턴 void

CopyPixelsCore() 보호된 메소드

Requests pixels from the ChainedCustomBitmapSource.
This implementation simply delegates to the source, if present.
protected CopyPixelsCore ( System.Windows.Int32Rect sourceRect, int stride, int bufferSize, IntPtr buffer ) : void
sourceRect System.Windows.Int32Rect /// The rectangle of pixels being requested. ///
stride int /// The stride of the destination buffer. ///
bufferSize int /// The size of the destination buffer. ///
buffer System.IntPtr /// The destination buffer. ///
리턴 void

CreateInstanceCore() 보호된 메소드

Creates an instance of the ChainedBitmap class.
protected CreateInstanceCore ( ) : System.Windows.Freezable
리턴 System.Windows.Freezable

FreezeCore() 보호된 메소드

Transitions this instance into a thread-safe, read-only mode.
Override this method if you have additional non-DP state that should be frozen along with the instance.
protected FreezeCore ( bool isChecking ) : bool
isChecking bool /// Whether or not the transition should really happen, or just to /// determine if the transition is possible. ///
리턴 bool

OnSourcePropertyChanged() 보호된 메소드

protected OnSourcePropertyChanged ( System.Windows.DependencyPropertyChangedEventArgs e ) : void
e System.Windows.DependencyPropertyChangedEventArgs
리턴 void

프로퍼티 상세

SourceProperty 공개적으로 정적으로 프로퍼티

The DependencyProperty for the Source property.
public static DependencyProperty,System.Windows SourceProperty
리턴 System.Windows.DependencyProperty