Package sc.fiji.snt.seed

Class SeedOverlayCanvasHandler

java.lang.Object
sc.fiji.snt.seed.SeedOverlayCanvasHandler
public final class SeedOverlayCanvasHandler extends Object
Attaches a lightweight MouseListener to a TracerCanvas that lets the user click on a rendered seed to select it (mirroring SeedOverlayBigViewerHandler's plain-click behavior for Bvv/Bdv.Selection flows through SeedOverlay.setSelectedSeeds(java.util.Collection<? extends sc.fiji.snt.seed.SeedPoint>) so the Seed Manager table stays in sync), or Alt+Click it to open the per-seed edit dialog. Right-clicks pass through to the existing tracing-canvas handlers unchanged.

Selection (plain click) is intentionally narrower-gated than editing (Alt+Click): the classic canvas traces on plain click by default whenever the UI is idle, and - unlike Bvv/Bdv, where tracing-by-click is an opt-in per-viewer toggle - InteractiveTracerCanvas handles that in mouseReleased, which runs before this class's listener ever sees the click, so e.consume() here cannot suppress it. onPlainClick(sc.fiji.snt.TracerCanvas, sc.fiji.snt.SNT, java.awt.event.MouseEvent) therefore only acts while the UI is genuinely paused (SNT_PAUSED/TRACING_PAUSED - see isPausedForSelection(sc.fiji.snt.SNT)), the same states in which InteractiveTracerCanvas disables click-to-trace itself, so the two gestures never collide. onAltClick(sc.fiji.snt.TracerCanvas, sc.fiji.snt.SNT, java.awt.event.MouseEvent) keeps the broader isUiReady(sc.fiji.snt.SNT) test since Alt is not used by tracing today.

The hit-test uses the SeedOverlay's spatial index (SeedOverlay.nearest(double, double, double, double)). Tolerance is derived from the canvas magnification so it matches what the user sees on screen.

Author:
Tiago Ferreira
See Also:

  • Method Details

    • install

      public static void install(TracerCanvas canvas, SNT snt)
      Installs the Alt+Click → edit-nearest-seed listener on the given canvas.