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Miguel Ángel
0150a0a1b4
- Zoom anchors to cursor position instead of always zooming toward center. The resolvePreviewWheelZoom function now accepts cursorX/cursorY (offset from viewport center) and uses the standard zoom-to-point formula to adjust pan so the content point under the cursor stays fixed. - Add visible "Reset" button (bottom-right) showing current zoom % when not at fit zoom. Driven by settledZoom state that updates after the 200ms settle debounce, so no re-renders during active zoom gestures. - Fix border-expands-inward bug: scaleIframeToFit in the player now uses offsetWidth/offsetHeight instead of getBoundingClientRect. The latter returns values inflated by ancestor CSS zoom, causing double-scaling that made the iframe appear smaller than its container. - Fix zoom HUD appearing during pan: split applyZoom (shows HUD) from applyPan (silent) so trackpad/middle-mouse panning no longer flashes the zoom percentage overlay. - Fix stale closure performance regression: replace stageSize in effect dependency arrays with stageSizeRef pattern. The old deps caused wheel and pointer handlers to re-register on every viewport resize. - Widen pan clamp range (Math.abs instead of Math.max(0,...)) so content can float within the viewport when zoomed below fit — required for zoom-to-cursor to work correctly at any zoom level. Closes #900