From 8704cf6234eaee39659a76909b1f42e3a25bd3ca Mon Sep 17 00:00:00 2001
From: Meysam Parvizi <meysam.parvizi.ir@gmail.com>
Date: Sat, 10 Oct 2026 02:22:37 +0200
Subject: [PATCH] fix(site): allow zooming in after "Show the whole page"

The whole-page view sits below the minimum zoom, so every zoom-in step was rejected as out of range. Limits now only stop steps that go further out of range, and zooming out can reach the whole-page view.
---
 site/mapview.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/site/mapview.js b/site/mapview.js
index a26322e..5bdd21a 100644
--- a/site/mapview.js
+++ b/site/mapview.js
@@ -423,10 +423,11 @@ export function createMapView({ root, plan, data, build, onSelect }) {
     fitButton.title = 'Show the whole page';
   }
 
+  const pageFitWidth = (size) => Math.max(page.w, (page.h + 40) / (size ? size.h / size.w : page.h / page.w)) + 40;
+
   function fitPage() {
     const size = canvasSize();
-    const aspect = size ? size.h / size.w : page.h / page.w;
-    const width = Math.max(page.w, (page.h + 40) / aspect) + 40;
+    const width = pageFitWidth(size);
     fitMode = 'page';
     setView({ x: (page.w - width) / 2, y: 0, w: width });
     fitButton.title = 'Fit the width';
@@ -446,7 +447,9 @@ export function createMapView({ root, plan, data, build, onSelect }) {
     const size = canvasSize();
     if (!size) return;
     const scale = (size.w / v.w) * factor;
-    if (scale < (size.w / page.w) * MIN_ZOOM || scale > MAX_ZOOM) return;
+    // Limits only stop a step that goes further out of range; the whole-page view is always reachable.
+    const minScale = Math.min((size.w / page.w) * MIN_ZOOM, size.w / pageFitWidth(size), size.w / v.w);
+    if (factor > 1 ? scale > MAX_ZOOM : scale < minScale) return;
     const [px, py] = clientX == null ? [v.x + v.w / 2, v.y + v.h / 2] : toChart(clientX, clientY);
     fitMode = 'custom';
     setView({ x: px - (px - v.x) / factor, y: py - (py - v.y) / factor, w: v.w / factor });