From ee2a1b47d92cd5862479c57cf9914b81d397252f Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 7 Jan 2022 13:55:01 +0300
Subject: [PATCH] Fallthrough wheel events from ScrollBar to ScrollArea.

---
 ui/widgets/scroll_area.cpp | 4 ++++
 ui/widgets/scroll_area.h   | 1 +
 2 files changed, 5 insertions(+)

diff --git a/ui/widgets/scroll_area.cpp b/ui/widgets/scroll_area.cpp
index b4b59e6..f7075dd 100644
--- a/ui/widgets/scroll_area.cpp
+++ b/ui/widgets/scroll_area.cpp
@@ -284,6 +284,10 @@ void ScrollBar::resizeEvent(QResizeEvent *e) {
 	updateBar();
 }
 
+void ScrollBar::wheelEvent(QWheelEvent *e) {
+	static_cast<ScrollArea*>(parentWidget())->viewportEvent(e);
+}
+
 auto ScrollBar::shadowVisibilityChanged() const
 -> rpl::producer<ScrollBar::ShadowVisibility> {
 	return _shadowVisibilityChanged.events();
diff --git a/ui/widgets/scroll_area.h b/ui/widgets/scroll_area.h
index e7143d9..3ab7db1 100644
--- a/ui/widgets/scroll_area.h
+++ b/ui/widgets/scroll_area.h
@@ -88,6 +88,7 @@ protected:
 	void mousePressEvent(QMouseEvent *e) override;
 	void mouseReleaseEvent(QMouseEvent *e) override;
 	void resizeEvent(QResizeEvent *e) override;
+	void wheelEvent(QWheelEvent *e) override;
 
 private:
 	ScrollArea *area();