DocumentSettings

DocumentSettings is a struct you construct before creating a DocumentController. After creation, you can update it at any time by calling controller.ApplyDocumentSettings(newSettings).

Property	Type	Default	Description
DocumentBackgroundColor	SKColor	White	Page background color painted behind all text and images.
TextStyle	IStyle	—	Default text style applied when no explicit style exists. Set font family, size, and color here.
PageWidth	float	800	Total page width in pixels (including margins).
DocumentMargins	DocumentMargins	default	Left, right, top, and bottom margin values in pixels.
Alignment	TextAlignment	Left	Default paragraph alignment for new paragraphs.

var settings = new DocumentSettings
{
    PageWidth               = 850f,
    DocumentBackgroundColor = SKColors.White,
    DocumentMargins         = new DocumentMargins(80, 80, 60, 60),
    TextStyle               = new Style { FontFamily = "Segoe UI", FontSize = 13 },
    Alignment               = TextAlignment.Left
};

DocumentMargins

struct

All properties are init-only and specified in pixels.

Property	Type	Description
Left	float	Left margin in pixels
Right	float	Right margin in pixels
Top	float	Top margin in pixels
Bottom	float	Bottom margin in pixels

// Constructor form
var margins = new DocumentMargins(80, 80, 60, 60);
// left=80, right=80, top=60, bottom=60

// Or object-initializer form
var margins = new DocumentMargins { Left = 100, Right = 100, Top = 80, Bottom = 80 };

DocumentInfo

struct

A read-only snapshot of the document's current dimensions, delivered via the OnContentSizeChanged event.

Property	Type	Description
Width	float	Total document width as measured
Height	float	Total document height as measured
ScrollOffset	Vector2	Current scroll position (X, Y)

NavigationInfo

struct

Published via DocumentController.OnNavigation when the caret moves or the style changes.

Property	Type	Description
StyleAtCaret	IStyle	Fully merged text style at the current caret position
SelectionInfo	SelectionInfo	Paragraph-level info: alignment, list type/level, line spacing
Selection	TextRange	The current selection range (start == end when no selection)

controller.OnNavigation += (info) =>
{
    var style = info.StyleAtCaret;
    boldBtn.IsChecked   = style.FontWeight >= 700;
    italicBtn.IsChecked = style.FontItalic == true;

    var sel = info.SelectionInfo;
    alignLeft.IsChecked     = sel.Alignment == TextAlignment.Left;
    alignCenter.IsChecked   = sel.Alignment == TextAlignment.Center;
    bulletBtn.IsChecked     = sel.ListType  == ListType.Bullet;
};

IStyle Properties

IStyle is defined by Topten.RichTextKit. All properties are nullable — null means "inherit from the document default."

Property	Type	Description
FontFamily	string?	Font family name (e.g., `"Arial"`)
FontSize	float?	Font size in points
FontWeight	int?	400 = normal, 700 = bold
FontItalic	bool?	True for italic
TextColor	SKColor?	Foreground text color
BackgroundColor	SKColor?	Background highlight color
Underline	UnderlineStyle?	`None` or `Solid`
StrikeThrough	StrikeThroughStyle?	`None` or `Solid`
FontVariant	FontVariant?	`Normal`, `SubScript`, or `SuperScript`