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Overview

PanAndZoom is an interactive viewport control with zoom, pan, history, bounds, resize, rotation, and state persistence support.

Start with Quickstart: ZoomBorder to build an interactive canvas, editor, or viewer.

What ZoomBorder Adds

Avalonia.Controls.PanAndZoom.ZoomBorder wraps a single child and manages a transform matrix over that content. Common capabilities include:

  • mouse-wheel zoom and pointer-based pan
  • pinch and scroll gestures
  • bounds policies such as KeepContentVisible and FillViewport
  • view history, saved views, and import/export of serialized state
  • keyboard navigation and ICommand bindings for MVVM surfaces

Automated Testing

Headless testing helpers are maintained in ProTest. Use its xUnit 3 or xUnit 4 adapter to test Avalonia interaction without a desktop session. The ProTest setup guide explains the matching package and framework versions.