From 7dca55fdb8187ea10e70168ab774e0b7a6e6beae Mon Sep 17 00:00:00 2001
From: Dimitrie Hoekstra <hi@dimitr.ie>
Date: Mon, 29 Sep 2025 20:04:26 +0200
Subject: [PATCH] Add dynamic minimum zoom recalculation on viewport resize

- Recalculate minimum zoom when window resizes to ensure canvas fits properly
- Automatically adjust zoom if current level falls below new minimum after resize
- Ensures canvas boundaries remain appropriate for different viewport sizes
---
 .../editor-client/src/js/ui/view-zoom-constants.js     |  2 +-
 .../@node-red/editor-client/src/js/ui/view.js          | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/view-zoom-constants.js b/packages/node_modules/@node-red/editor-client/src/js/ui/view-zoom-constants.js
index ff32bb92d..92e0f526c 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/view-zoom-constants.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/view-zoom-constants.js
@@ -3,7 +3,7 @@
  */
 RED.view.zoomConstants = {
     // Zoom limits
-    MIN_ZOOM: 0.15,  // Default minimum, will be dynamically calculated to fit canvas
+    MIN_ZOOM: 0.05,  // Default minimum, will be dynamically calculated to fit canvas
     MAX_ZOOM: 2.0,
     
     // Zoom step for keyboard/button controls
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
index e61375847..bbe0438c7 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
@@ -640,6 +640,16 @@ RED.view = (function() {
                 spacebarPressed = false;
             }
         })
+        
+        // Recalculate minimum zoom when window resizes
+        $(window).on("resize.red-ui-view", function() {
+            // Recalculate minimum zoom to ensure canvas fits in viewport
+            var newMinZoom = calculateMinZoom();
+            // If current zoom is below new minimum, adjust it
+            if (scaleFactor < newMinZoom) {
+                zoomView(newMinZoom);
+            }
+        })
 
         // Workspace Background
         eventLayer.append("svg:rect")