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Magnifier Object

Overview​

The Magnifier is a viewer subsystem that provides high-precision visual inspection and alignment capabilities. It is primarily used during interactive alignment workflows where users need magnified, pixel-accurate feedback while positioning control points.

The Magnifier integrates tightly with:

  • The viewer rendering pipeline
  • Markup and annotation logic
  • User interaction callbacks

Responsibilities​

The Magnifier object is responsible for:

  • Rendering a magnified view of the underlying document content
  • Synchronizing magnification with cursor or alignment points
  • Managing overlay panels and visual guides
  • Emitting callbacks during alignment workflows

High-Level Architecture​

At a high level, the Magnifier consists of:

  • Magnifier core object – coordinates state and lifecycle
  • Magnify panel – visual container responsible for rendering the zoomed view
  • Overlay logic – guides, crosshairs, and alignment indicators
  • Callbacks & events – integration points for host applications