From af3476bb0f987479819d5ed11a185c39778df0a8 Mon Sep 17 00:00:00 2001
From: Erik Terwan <erik@erikterwan.com>
Date: Thu, 21 Sep 2023 12:04:56 +0200
Subject: [PATCH] Add shadowColor to MMMScrollViewShadowsSettings

---
 MMMCommonUI.podspec                           |  2 +-
 .../MMMCommonUIObjC/MMMScrollViewShadows.h    |  3 +++
 .../MMMCommonUIObjC/MMMScrollViewShadows.m    | 19 +++++++++++++------
 3 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/MMMCommonUI.podspec b/MMMCommonUI.podspec
index 42509b4..43afede 100644
--- a/MMMCommonUI.podspec
+++ b/MMMCommonUI.podspec
@@ -6,7 +6,7 @@
 Pod::Spec.new do |s|
 
 	s.name = "MMMCommonUI"
-	s.version = "3.8.1"
+	s.version = "3.9.0"
 	s.summary = "Small UI-related pieces reused in many components from MMMTemple"
 	s.description =	"#{s.summary}."
 	s.homepage = "https://github.com/mediamonks/#{s.name}"
diff --git a/Sources/MMMCommonUIObjC/MMMScrollViewShadows.h b/Sources/MMMCommonUIObjC/MMMScrollViewShadows.h
index fb5b3ac..82786e7 100644
--- a/Sources/MMMCommonUIObjC/MMMScrollViewShadows.h
+++ b/Sources/MMMCommonUIObjC/MMMScrollViewShadows.h
@@ -41,6 +41,9 @@ NS_ASSUME_NONNULL_BEGIN
 /** The base shadow color is black with this amount of transparency applied to it. */
 @property (nonatomic, readwrite) CGFloat shadowAlpha;
 
+/** The base shadow color, ensure this is an RGB color. Note that the alpha channel is ignored, use ``shadowAlpha`` instead.  */
+@property (nonatomic, readwrite) UIColor *shadowColor;
+
 /**
  * The value between 0 and 1 telling how close to an elliptical curve the shadow's border should be.
  *
diff --git a/Sources/MMMCommonUIObjC/MMMScrollViewShadows.m b/Sources/MMMCommonUIObjC/MMMScrollViewShadows.m
index a5ec7cb..6b03383 100644
--- a/Sources/MMMCommonUIObjC/MMMScrollViewShadows.m
+++ b/Sources/MMMCommonUIObjC/MMMScrollViewShadows.m
@@ -16,7 +16,9 @@ @implementation MMMScrollViewShadowsSettings
 - (id)init {
 
 	if (self = [super init]) {
-
+		
+		_shadowColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0];
+		
 		_shadowAlpha = .3;
 		_shadowCurvature = 0.5;
 
@@ -35,7 +37,8 @@ - (id)init {
 - (id)copyWithZone:(NSZone *)zone {
 
 	MMMScrollViewShadowsSettings *result = [[MMMScrollViewShadowsSettings alloc] init];
-
+	
+	result.shadowColor = self.shadowColor;
 	result.shadowAlpha = self.shadowAlpha;
 	result.shadowCurvature = self.shadowCurvature;
 
@@ -84,16 +87,20 @@ - (void)drawRect:(CGRect)rect {
 	CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
 
 	const CGFloat shadowAlpha = _settings.shadowAlpha;
-
+	
+	CGFloat red, green, blue;
+	
+	[_settings.shadowColor getRed:&red green:&green blue:&blue alpha:nil];
+	
 	NSInteger numberOfSteps = MAX(8, MIN(b.size.height * 2, 24));
 	CGFloat *colors = alloca(4 * sizeof(CGFloat) * numberOfSteps);
 	CGFloat *steps = alloca(sizeof(CGFloat) * numberOfSteps);
 	for (NSInteger i = 0; i < numberOfSteps; i++) {
 		CGFloat t = (CGFloat)i / (numberOfSteps - 1);
 		steps[i] = t;
-		colors[i * 4 + 0] = 0;
-		colors[i * 4 + 1] = 0;
-		colors[i * 4 + 2] = 0;
+		colors[i * 4 + 0] = red;
+		colors[i * 4 + 1] = green;
+		colors[i * 4 + 2] = blue;
 		colors[i * 4 + 3] = powf(
 			[MMMAnimation
 				interpolateFrom:shadowAlpha to:0