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Package: Pretext.DirectWrite

Pretext.DirectWrite is the first-party Windows-native measurement backend.

Install it when

  • your host runs on Windows and you want native DirectWrite metrics
  • you want Pretext to prefer the Windows-native backend automatically
  • you are not using SkiaSharp as your measurement source of truth

Runtime behavior

The package advertises DirectWriteTextMeasurerFactory to the core engine.

  • Name: DirectWrite
  • IsSupported: true on Windows
  • Priority: 100

When Pretext.DirectWrite and Pretext are both referenced, backend discovery will choose it on Windows unless you explicitly configure another factory.

Relationship to the rest of the stack

  • depends on Pretext.Contracts
  • does not depend on Pretext.Uno
  • can live beside Pretext.SkiaSharp, which remains the lower-priority fallback

Typical hosts

  • WinUI or Uno desktop hosts that want native Windows metrics
  • custom Windows controls
  • document or editor surfaces that do their own drawing and placement