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ParentElement.RichText.Core

A .NET rich-text editing library built on RichTextKit and SkiaSharp. It provides a document controller, formatting operations, inline images, embedded tables, clipboard support, and import/export to RTF.

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Architecture Overview

┌─────────────────────────────────────────────────────────┐
│                      Your UI Layer                      │
│          (Avalonia, MAUI, WPF, Blazor, etc.)            │
└────────────────────────┬────────────────────────────────┘
                         │ IDocumentController
┌────────────────────────▼────────────────────────────────┐
│                  DocumentController                     │
│   Formatting · Clipboard · Tables · Undo/Redo · PDF     │
├──────────────┬──────────────────────┬───────────────────┤
│  CaretController  │  ShortcutHandler  │  StyleManager    │
├──────────────┴──────────────────────┴───────────────────┤
│          ParentElement.Topten.RichTextKit                │
│              TextDocument · IStyle · Layout              │
└─────────────────────────────────────────────────────────┘

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Namespaces

Namespace	Description
ParentElement.RichText.Core.Abstractions.Controllers	Core interfaces — start here
ParentElement.RichText.Core.Abstractions.IO	Import / export contracts
ParentElement.RichText.Core.Controllers	DocumentController concrete implementation
ParentElement.RichText.Core.Content	Read-only content model returned by DocumentReader
ParentElement.RichText.Core.Data	Settings and info data structures
ParentElement.RichText.Core.Geometry	Platform-agnostic Point, Rectangle, Size
ParentElement.RichText.Core.Images	Inline image support
ParentElement.RichText.Core.Input	Keyboard handling and shortcut mapping
ParentElement.RichText.Core.Tables	Inline table support
ParentElement.RichText.Core.IO	RTF import and export

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Pages

Interfaces

Page	Description
IDocumentController	The primary contract for all editor operations
IClipboardHandler	Platform clipboard abstraction
IExportContent	Export a document to a stream or file
IImportContent	Import content into a document
ICellWriter	Write-only API for populating table cell content

Implementation

Page	Description
DocumentController	Concrete IDocumentController implementation

Content Model

Page	Description
Content-Model	ContentBlock, ContentRun, ContentTable, ContentTableCell, DocumentReader

Data Structures

Page	Description
Data-Structures	DocumentSettings, DocumentMargins, DocumentInfo, NavigationInfo, ViewModifier

Supporting APIs

Page	Description
Geometry	Point, Rectangle, Size
Input-and-Shortcuts	KeyInfo, KeyMap, Shortcut, ShortcutHandler, KeyCode
Tables	InlineTable, TableCell, TableOptions, TableBorderStyle, CellController
Images	InlineImage, EditorCursor, ResizeHandleType
IO	ExporterBase, ImporterBase, RtfExporter, RtfImporter

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Quick Start

// 1. Configure the document
var settings = new DocumentSettings
{
    PageWidth    = 800,
    DocumentMargins = new DocumentMargins(40, 40, 40, 40),
    ShowPageBreaks = true,
};

// 2. Create the controller
IDocumentController editor = new DocumentController(settings, myClipboard);

// 3. Wire up rendering and input in your UI framework
editor.RequestRedraw  = () => myCanvas.InvalidateSurface();
editor.VisibleBounds  = new Rectangle(0, 0, viewWidth, viewHeight);

// 4. Draw
void OnPaintSurface(SKCanvas canvas)
{
    editor.Draw(canvas);
}

// 5. Forward pointer and key events
void OnPointerDown(float x, float y) => editor.Click(new Point(x, y));
void OnPointerMove(float x, float y) => editor.DragTo(new Point(x, y));
async void OnKeyDown(KeyInfo key)    => await editor.OnKeyEvent(key);