From c48709d6e472b547ea1691af202e12d9686150e7 Mon Sep 17 00:00:00 2001
From: RadRussianRus <radrussianrus@gmail.com>
Date: Thu, 15 Sep 2022 23:35:57 +0300
Subject: [PATCH] [Visual] Allow hiding shadow of modal window header

This was needed for custom changelog box, which is currently not in main branch.
---
 ui/layers/box_content.cpp | 12 ++++++++----
 ui/layers/box_content.h   |  9 +++++++++
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/ui/layers/box_content.cpp b/ui/layers/box_content.cpp
index e1a0423..07eb8fc 100644
--- a/ui/layers/box_content.cpp
+++ b/ui/layers/box_content.cpp
@@ -204,10 +204,12 @@ void BoxContent::updateShadowsVisibility() {
 
 	const auto top = _scroll->scrollTop();
 	_topShadow->toggle(
-		(top > 0 || _innerTopSkip > 0),
+		(top > 0
+			|| (_innerTopSkip > 0 && !_topShadowWithSkip)),
 		anim::type::normal);
 	_bottomShadow->toggle(
-		(top < _scroll->scrollTopMax() || _innerBottomSkip > 0),
+		(top < _scroll->scrollTopMax()
+			|| (_innerBottomSkip > 0 && !_bottomShadowWithSkip)),
 		anim::type::normal);
 }
 
@@ -298,10 +300,12 @@ void BoxContent::updateScrollAreaGeometry() {
 
 		const auto top = _scroll->scrollTop();
 		_topShadow->toggle(
-			(top > 0 || _innerTopSkip > 0),
+			(top > 0
+				|| (_innerTopSkip > 0 && !_topShadowWithSkip)),
 			anim::type::instant);
 		_bottomShadow->toggle(
-			(top < _scroll->scrollTopMax() || _innerBottomSkip > 0),
+			(top < _scroll->scrollTopMax()
+				|| (_innerBottomSkip > 0 && !_bottomShadowWithSkip)),
 			anim::type::instant);
 	}
 }
diff --git a/ui/layers/box_content.h b/ui/layers/box_content.h
index fa275f5..63970c9 100644
--- a/ui/layers/box_content.h
+++ b/ui/layers/box_content.h
@@ -209,6 +209,13 @@ protected:
 		getDelegate()->setLayerType(layerType);
 	}
 
+	void setTopShadowWithSkip(bool enabled) {
+		_topShadowWithSkip = enabled;
+	}
+	void setBottomShadowWithSkip(bool enabled) {
+		_bottomShadowWithSkip = enabled;
+	}
+
 	void setDimensions(
 			int newWidth,
 			int maxHeight,
@@ -277,6 +284,8 @@ private:
 	bool _preparing = false;
 	bool _noContentMargin = false;
 	bool _closeByEscape = true;
+	bool _topShadowWithSkip = false;
+	bool _bottomShadowWithSkip = false;
 	int _innerTopSkip = 0;
 	int _innerBottomSkip = 0;
 	object_ptr<ScrollArea> _scroll = { nullptr };