C# 클래스 PhotoSharingApp.Universal.Controls.CropControl

A crop control that allows the user to crop images to a 1:1 ratio before uploading.

상속: Windows.UI.Xaml.Controls.Control, ICropControl, INotifyPropertyChanged

파일 보기 프로젝트 열기: Microsoft/Appsample-Photosharing

Private Properties

프로퍼티	타입	설명
AddCornerEvents	void
Corner_PointerMoved	void
Corner_PointerPressed	void
Corner_PointerReleased	void
RemoveCornerEvents	void
SelectRegion_ManipulationCompleted	void
SelectRegion_ManipulationDelta	void
UpdatePreviewImage	void
selectedRegion_PropertyChanged	void
sourceImage_SizeChanged	void

공개 메소드들

메소드	설명
CropControl ( ) : System	Initializes a new instance of the CropControl class.
Dispose ( ) : void	Releases resources and unregisters from event handlers.
GetCroppedImage ( ) : Task	Creates the non-scaled cropped image.
LoadImage ( IRandomAccessStream fileStream ) : System.Threading.Tasks.Task	Loads the image.

보호된 메소드들

메소드	설명
OnApplyTemplate ( ) : void	Template to manage crop selection of image.

비공개 메소드들

메소드	설명
AddCornerEvents ( Control corner ) : void	Adds pointer events to the given control.
Corner_PointerMoved ( object sender, PointerRoutedEventArgs e ) : void	If a pointer which is captured by the corner moves，the select region will be updated.
Corner_PointerPressed ( object sender, PointerRoutedEventArgs e ) : void	If a pointer presses in the corner, it means that the user starts to move the corner. 1. Capture the pointer, so that the UIElement can get the Pointer events (PointerMoved, PointerReleased...) even the pointer is outside of the UIElement. 2. Record the start position of the move.
Corner_PointerReleased ( object sender, PointerRoutedEventArgs e ) : void	The pressed pointer is released, which means that the move is ended. 1. Release the Pointer. 2. Clear the position history of the Pointer.
RemoveCornerEvents ( Control corner ) : void	Remove pointer events for the corner.
SelectRegion_ManipulationCompleted ( object sender, ManipulationCompletedRoutedEventArgs e ) : void	The manipulation is completed, and then update the preview image
SelectRegion_ManipulationDelta ( object sender, ManipulationDeltaRoutedEventArgs e ) : void	The user manipulates the selectRegion. The manipulation includes 1. Translate 2. Scale
UpdatePreviewImage ( ) : void	Updates the preview image.
selectedRegion_PropertyChanged ( object sender, PropertyChangedEventArgs e ) : void	Show the select region information.
sourceImage_SizeChanged ( object sender, SizeChangedEventArgs e ) : void	This event will be fired when 1. An new image is opened. 2. The source of the sourceImage is set to null. 3. The view state of this application is changed.

메소드 상세

CropControl() 공개 메소드

Initializes a new instance of the CropControl class.

public CropControl ( ) : System
리턴	System

Dispose() 공개 메소드

Releases resources and unregisters from event handlers.

public Dispose ( ) : void
리턴	void

GetCroppedImage() 공개 메소드

Creates the non-scaled cropped image.

public GetCroppedImage ( ) : Task
리턴	Task

LoadImage() 공개 메소드

Loads the image.

The file stream must not be null

public LoadImage ( IRandomAccessStream fileStream ) : System.Threading.Tasks.Task
fileStream	IRandomAccessStream	The file stream.
리턴	System.Threading.Tasks.Task

OnApplyTemplate() 보호된 메소드

Template to manage crop selection of image.

protected OnApplyTemplate ( ) : void
리턴	void