Class HexView

An hex viewer and editor View over a System.IO.Stream
Inheritance
System.Object
Responder
View
HexView
Implements
System.IDisposable
System.ComponentModel.ISupportInitializeNotification
System.ComponentModel.ISupportInitialize
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: Terminal.Gui
Assembly: Terminal.Gui.dll
Syntax
public class HexView : View, IDisposable, ISupportInitializeNotification, ISupportInitialize
Remarks

HexView provides a hex editor on top of a seekable System.IO.Stream with the left side showing an hex dump of the values in the System.IO.Stream and the right side showing the contents (filtered to non-control sequence ASCII characters).

Users can switch from one side to the other by using the tab key.

To enable editing, set AllowEdits to true. When AllowEdits is true the user can make changes to the hexadecimal values of the System.IO.Stream. Any changes are tracked in the Edits property (a System.Collections.Generic.SortedDictionary`2) indicating the position where the changes were made and the new values. A convenience method, ApplyEdits() will apply the edits to the System.IO.Stream.

Control the first byte shown by setting the DisplayStart property to an offset in the stream.

Constructors

HexView()

Initialzies a HexView class using Computed layout.
Declaration
public HexView()

HexView(Stream)

Initialzies a HexView class using Computed layout.
Declaration
public HexView(Stream source)
Parameters
Type Name Description
System.IO.Stream source The System.IO.Stream to view and edit as hex, this System.IO.Stream must support seeking, or an exception will be thrown.

Properties

AllowEdits

Gets or sets whether this HexView allow editing of the System.IO.Stream of the underlying System.IO.Stream.
Declaration
public bool AllowEdits { get; set; }
Property Value
Type Description
System.Boolean true if allow edits; otherwise, false.

DesiredCursorVisibility

Get / Set the wished cursor when the field is focused
Declaration
public CursorVisibility DesiredCursorVisibility { get; set; }
Property Value
Type Description
CursorVisibility

DisplayStart

Sets or gets the offset into the System.IO.Stream that will displayed at the top of the HexView
Declaration
public long DisplayStart { get; set; }
Property Value
Type Description
System.Int64 The display start.

Edits

Gets a System.Collections.Generic.SortedDictionary`2 describing the edits done to the HexView. Each Key indicates an offset where an edit was made and the Value is the changed byte.
Declaration
public IReadOnlyDictionary<long, byte> Edits { get; }
Property Value
Type Description
System.Collections.Generic.IReadOnlyDictionary<System.Int64, System.Byte> The edits.

Frame

Declaration
public override Rect Frame { get; set; }
Property Value
Type Description
Rect
Overrides

Source

Sets or gets the System.IO.Stream the HexView is operating on; the stream must support seeking (System.IO.Stream.CanSeek == true).
Declaration
public Stream Source { get; set; }
Property Value
Type Description
System.IO.Stream The source.

Methods

ApplyEdits()

This method applies andy edits made to the System.IO.Stream and resets the contents of the Edits property
Declaration
public void ApplyEdits()

PositionCursor()

Declaration
public override void PositionCursor()
Overrides

ProcessKey(KeyEvent)

Declaration
public override bool ProcessKey(KeyEvent keyEvent)
Parameters
Type Name Description
KeyEvent keyEvent
Returns
Type Description
System.Boolean
Overrides

Redraw(Rect)

Declaration
public override void Redraw(Rect bounds)
Parameters
Type Name Description
Rect bounds
Overrides

Implements

System.IDisposable
System.ComponentModel.ISupportInitializeNotification
System.ComponentModel.ISupportInitialize