From 736a1626aad22dc81a11ca3546fc19147f79771f Mon Sep 17 00:00:00 2001
From: dev <dev@local>
Date: Thu, 26 Feb 2026 12:15:34 +0000
Subject: [PATCH] feat(ui_builders_shared): implement class
 ScrollbarWheelOnlyScrollArea

---
 scanslicer/ui_builders_shared.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/scanslicer/ui_builders_shared.py b/scanslicer/ui_builders_shared.py
index 4fab19c..81033e7 100644
--- a/scanslicer/ui_builders_shared.py
+++ b/scanslicer/ui_builders_shared.py
@@ -71,3 +71,21 @@ def icon_from_svg_data_url(data_url, size=24, color_hex=None, palette=None):
     renderer.render(painter)
     painter.end()
     return QIcon(pixmap)
+
+
+# ScrollbarWheelOnlyScrollArea: class definition for ScanSlicer behavior.
+class ScrollbarWheelOnlyScrollArea(QScrollArea):
+    # wheelEvent: function definition for ScanSlicer behavior.
+    def wheelEvent(self, event):
+        scrollbar = self.verticalScrollBar()
+        if scrollbar is None or not scrollbar.isVisible():
+            event.ignore()
+            return
+
+        global_pos = event.globalPosition().toPoint()
+        scrollbar_rect = QRect(scrollbar.mapToGlobal(QPoint(0, 0)), scrollbar.size())
+        if not scrollbar_rect.contains(global_pos):
+            event.ignore()
+            return
+
+        super().wheelEvent(event)