From 6f684bb49131b29366831c0e75ef0fde8aa5ba59 Mon Sep 17 00:00:00 2001
From: pax <paxxe@protonmail.com>
Date: Sun, 5 Apr 2026 14:52:28 -0500
Subject: [PATCH] =?UTF-8?q?Fix=20diagonal=20navigation=20=E2=80=94=20use?=
 =?UTF-8?q?=20viewport=20width=20for=20column=20count?=
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FlowLayout.columns now reads the scroll area viewport width
instead of its own width, which can be stale after appending
posts or scrollbar visibility changes.
---
 booru_viewer/gui/grid.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/booru_viewer/gui/grid.py b/booru_viewer/gui/grid.py
index 89f8dca..78c0c4b 100644
--- a/booru_viewer/gui/grid.py
+++ b/booru_viewer/gui/grid.py
@@ -258,7 +258,12 @@ class FlowLayout(QWidget):
     def columns(self) -> int:
         if not self._items:
             return 1
-        w = self.width() or 800
+        # Use parent viewport width if inside a QScrollArea
+        parent = self.parentWidget()
+        if parent and hasattr(parent, 'viewport'):
+            w = parent.viewport().width()
+        else:
+            w = self.width() or 800
         return max(1, w // (THUMB_SIZE + THUMB_SPACING))