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Fix: Zoom Values turning to NaN in Reader

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This commit is contained in:
Youwes09
2026-04-20 10:59:49 -05:00
parent e49df4501f
commit 044c93a790
6 changed files with 123 additions and 142 deletions
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src/core/ui/zoom.ts
+33 -12
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@@ -7,11 +7,9 @@ export function applyZoom() {
const uiZoom = store.settings.uiZoom ?? 1.0;
if (uiZoom === _appliedZoom) return;
_appliedZoom = uiZoom;
document.documentElement.style.setProperty("--ui-zoom", String(uiZoom));
document.documentElement.style.setProperty("--ui-scale", String(uiZoom));
document.documentElement.style.zoom = `${uiZoom * 100}%`;
if (_vhRafId !== null) cancelAnimationFrame(_vhRafId);
_vhRafId = requestAnimationFrame(() => {
_vhRafId = null;
@@ -22,19 +20,42 @@ export function applyZoom() {
export function handleZoomKey(e: KeyboardEvent) {
if (!e.ctrlKey) return;
const current = store.settings.uiZoom ?? 1.0;
if (e.key === "=" || e.key === "+") {
e.preventDefault();
store.settings.uiZoom = Math.min(2.0, Math.round((current + 0.1) * 10) / 10);
} else if (e.key === "-") {
e.preventDefault();
store.settings.uiZoom = Math.max(0.5, Math.round((current - 0.1) * 10) / 10);
} else if (e.key === "0") {
e.preventDefault();
store.settings.uiZoom = 1.0;
}
if (e.key === "=" || e.key === "+") { e.preventDefault(); store.settings.uiZoom = Math.min(2.0, Math.round((current + 0.1) * 10) / 10); }
else if (e.key === "-") { e.preventDefault(); store.settings.uiZoom = Math.max(0.5, Math.round((current - 0.1) * 10) / 10); }
else if (e.key === "0") { e.preventDefault(); store.settings.uiZoom = 1.0; }
}
export function mountZoomKey(): () => void {
window.addEventListener("keydown", handleZoomKey);
return () => window.removeEventListener("keydown", handleZoomKey);
}
export function clampZoom(z: number, min: number, max: number): number {
return Math.round(Math.min(max, Math.max(min, z)) * 1000) / 1000;
}
export function captureZoomAnchor(
containerEl: HTMLElement | null,
style: string,
out: { el: HTMLElement | null; offset: number },
) {
if (!containerEl || style !== "longstrip") return;
const containerTop = containerEl.getBoundingClientRect().top;
for (const img of containerEl.querySelectorAll<HTMLElement>("img[data-local-page]")) {
const rect = img.getBoundingClientRect();
if (rect.bottom > containerTop) { out.el = img; out.offset = rect.top - containerTop; return; }
}
}
export function restoreZoomAnchor(
containerEl: HTMLElement | null,
out: { el: HTMLElement | null; offset: number },
) {
if (!out.el || !containerEl) return;
const el = out.el;
out.el = null;
requestAnimationFrame(() => {
const containerTop = containerEl!.getBoundingClientRect().top;
containerEl!.scrollTop += (el.getBoundingClientRect().top - containerTop) - out.offset;
});
}