Class NullScreen

Inheritance

object

NullScreen

Implements

ITextScreen

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: SociallyDistant.Core.OS.Devices

Assembly: SociallyDistant.Framework.dll

Syntax

public sealed class NullScreen : ITextScreen

Properties

Columns

Gets the width of the screen, in characters.

Declaration

public int Columns { get; }

Property Value

Type	Description
int

CursorLeft

Gets the horizontal position of the cursor, in characters.

Declaration

public int CursorLeft { get; }

Property Value

Type	Description
int

CursorTop

Gets the vertical position of the cursor, in characters.

Declaration

public int CursorTop { get; }

Property Value

Type	Description
int

Rows

Gets the height of the screen, in characters.

Declaration

public int Rows { get; }

Property Value

Type	Description
int

Title

Gets or sets the title of this text screen. Implementations or users of ITextScreen can display this text in other UI elements, such as a tab.

Declaration

public string Title { get; set; }

Property Value

Type	Description
string

Methods

ClearScreen()

Clear the screen.

Declaration

public void ClearScreen()

Fill(Rune, int, int, int, int)

Fill a rectangular region of the screen with a specified Rune value.

Declaration

public void Fill(Rune rune, int x, int y, int width, int height)

Parameters

Type	Name	Description
Rune	rune	The character to fill the rectangle with.
int	x	The left column of the rectangle.
int	y	The top row of the rectangle.
int	width	The width, in columns, of the rectangle.
int	height	The height, in rows, of the rectangle.

Print(in ReadOnlySpan<Rune>)

Print the specified set of Rune values to the screen.

Declaration

public void Print(in ReadOnlySpan<Rune> unicodeRunes)

Parameters

Type	Name	Description
ReadOnlySpan<Rune>	unicodeRunes	A set of Unicode characters to write.

Print(string)

Print the specified text to the screen.

Declaration

public void Print(string text)

Parameters

Type	Name	Description
string	text	A string of text to write.

ReadLine(IHistoryCollection?, CancellationToken?)

Prompts the user to enter a line of text into the screen, creating a task that resolves with the entered text.

Declaration

public Task<string?> ReadLine(IHistoryCollection? historyCollection = null, CancellationToken? cancellationToken = null)

Parameters

Type	Name	Description
IHistoryCollection	historyCollection	An optional IHistoryCollection containing command-line history, if applicable.
CancellationToken?	cancellationToken	A cancellation token for interrupting the prompt.

Returns

Type	Description
Task<string>	A task that resolves with the entered text. If a null string is returned, the screen doesn't support keyboard input.

ResetBackgroundColor()

Reset the cursor's background color to its default.

Declaration

public void ResetBackgroundColor()

ResetCursorPosition()

Move the cursor to the top-left.

Declaration

public void ResetCursorPosition()

ResetFont()

Reset the cursor's font style to its default.

Declaration

public void ResetFont()

ResetForegroundColor()

Reset the cursor's foreground color to its default.

Declaration

public void ResetForegroundColor()

ResetTextEffects()

Reset the cursor's text effects to the default.

Declaration

public void ResetTextEffects()

SetBackgroundColor(Color)

Declaration

public void SetBackgroundColor(Color newBackgroundColor)

Parameters

Type	Name	Description
Color	newBackgroundColor

SetBackgroundColor(byte, byte, byte)

Set the background color of the cursor to the specified true color.

Declaration

public void SetBackgroundColor(byte red, byte green, byte blue)

Parameters

Type	Name	Description
byte	red	Value for the red channel.
byte	green	Value for the green channel.
byte	blue	Value for the blue channel.

SetBackgroundColor(ConsoleColor)

Set the background color of the cursor to the specified ConsoleColor value.

Declaration

public void SetBackgroundColor(ConsoleColor paletteColor)

Parameters

Type	Name	Description
ConsoleColor	paletteColor	One of the 16 colors available in the ConsoleColor palette.

SetCursorPosition(int, int)

Move the cursor to a new position.

Declaration

public void SetCursorPosition(int left, int top)

Parameters

Type	Name	Description
int	left	The new column for the cursor.
int	top	The new row for the cursor.

SetFont(bool, bool)

Change the cursor's font style.

Declaration

public void SetFont(bool bold, bool italic)

Parameters

Type	Name	Description
bool	bold	Value indicating whether text should be bold.
bool	italic	Value indicating whether text should be italic.

SetForegroundColor(Color)

Declaration

public void SetForegroundColor(Color newBackgroundColor)

Parameters

Type	Name	Description
Color	newBackgroundColor

SetForegroundColor(byte, byte, byte)

Set the foreground color of the cursor to the specified true color.

Declaration

public void SetForegroundColor(byte red, byte green, byte blue)

Parameters

Type	Name	Description
byte	red	Value for the red channel.
byte	green	Value for the green channel.
byte	blue	Value for the blue channel.

SetForegroundColor(ConsoleColor)

Set the foreground color of the cursor to the specified ConsoleColor value.

Declaration

public void SetForegroundColor(ConsoleColor paletteColor)

Parameters

Type	Name	Description
ConsoleColor	paletteColor	One of the 16 colors available in the ConsoleColor palette.

SetTextEffects(bool, bool)

Change the cursor's text effects.

Declaration

public void SetTextEffects(bool underline, bool strikeThrough)

Parameters

Type	Name	Description
bool	underline	Value indicating whether text should be underlined.
bool	strikeThrough	Value indicating whether text should be stricken out.

WaitForKey(CancellationToken?)

Creates an awaitable task that resolves when a key is pressed.

Declaration

public Task<ConsoleInputData?> WaitForKey(CancellationToken? cancellationToken = null)

Parameters

Type	Name	Description
CancellationToken?	cancellationToken	A cancellation token for cancelling the task.

Returns

Type	Description
Task<ConsoleInputData?>	A Task<TResult> that resolves when a key is pressed inside this screen. A null value returned at task completion means that this screen doessn't support input.

Write(Rune)

Write the specified Rune value to the screen, and advance the cursor by one cell.

Declaration

public void Write(Rune rune)

Parameters

Type	Name	Description
Rune	rune	The Unicode character to write to the screen.

Implements

ITextScreen

Extension Methods

TextScreenExtensions.Fill(ITextScreen, char, int, int, int, int)