onDoubleTap property
Stage-level fallback for displayed-state double-tap. Resolved as: DisplayConfig.onDoubleTap → this. Both null means no DoubleTapGestureRecognizer is registered — so single-tap fires on the up event without waiting for the double-tap timeout. Pass Stage.zoomToggleOnDoubleTap explicitly to opt in to the baseRect ↔ fit-cover-at-focal toggle.
Implementation
final OnStageTap? onDoubleTap;