Class RichTextBoxBase

Base class for all rich text box controls which can gather text input from the user and present text in highly formatted and stylized way.

System.Object
Control
ContainerControl
TextBoxBase
RichTextBoxBase
RichTextBox
System.IComparable
Namespace: FlaxEngine.GUI
Assembly: FlaxEngine.CSharp.dll
Syntax
public abstract class RichTextBoxBase : TextBoxBase, IComparable, IDrawable

Constructors

RichTextBoxBase()

Initializes a new instance of the RichTextBoxBase class.

Declaration
protected RichTextBoxBase()

Fields

_textBlocks

The text blocks.

Declaration
protected List<TextBlock> _textBlocks
Field Value
System.Collections.Generic.List<TextBlock>

Methods

DrawSelf()

Draws the control.

Declaration
public override void DrawSelf()
Overrides

GetCharPosition(Int32, out Single)

Calculates character position for given character index.

Declaration
public override Float2 GetCharPosition(int index, out float height)
Parameters
System.Int32 index

The text position to get it's coordinates.
System.Single height

The character height (at the given character position).
Returns
Float2

The character position (upper left corner which can be used for a caret position).
Overrides

GetNearestTextBlock(Int32, out TextBlock, Boolean)

Gets the text block or the nearest text block of the character at the given index.

Declaration
public bool GetNearestTextBlock(int index, out TextBlock result, bool snapToNext = false)
Parameters
System.Int32 index

The character index.
TextBlock result

The result text block descriptor.
System.Boolean snapToNext

If true, the when the index is between two text blocks, it will return the next block.
Returns
System.Boolean

True if a text block is found, otherwise false.

GetTextBlock(Int32, out TextBlock)

Gets the text block of the character at the given index.

Declaration
public bool GetTextBlock(int index, out TextBlock result)
Parameters
System.Int32 index

The character index.
TextBlock result

The result text block descriptor.
Returns
System.Boolean

True if got text block, otherwise false.

GetTextSize()

Calculates total text size. Called by OnTextChanged() to cache the text size.

Declaration
public override Float2 GetTextSize()
Returns
Float2

The total text size.
Overrides

HitTestText(Float2)

Calculates hit character index at given location.

Declaration
public override int HitTestText(Float2 location)
Parameters
Float2 location

The location to test.
Returns
System.Int32

The selected character position index (can be equal to text length if location is outside of the layout rectangle).
Overrides

OnDestroy()

Method called when managed instance should be destroyed

Declaration
public override void OnDestroy()
Overrides

OnMouseDoubleClick(Float2, MouseButton)

When mouse double clicks over control's area

Declaration
public override bool OnMouseDoubleClick(Float2 location, MouseButton button)
Parameters
Float2 location

Mouse location in Control Space
MouseButton button

Mouse buttons state (flags)
Returns
System.Boolean

True if event has been handled, otherwise false
Overrides

OnParseTextBlocks()

Called when text blocks needs to be updated from the current text.

Declaration
protected virtual void OnParseTextBlocks()

OnTextChanged()

Action called when text gets modified.

Declaration
protected override void OnTextChanged()
Overrides

SetSelection(Int32, Int32, Boolean)

Sets the selection.

Declaration
protected override void SetSelection(int start, int end, bool withScroll = true)
Parameters
System.Int32 start

The selection start character.
System.Int32 end

The selection end character.
System.Boolean withScroll

If set to true with auto-scroll.
Overrides

UpdateTextBlocks()

Updates the text blocks.

Declaration
public virtual void UpdateTextBlocks()

Extension Methods