From 92de74552847d295f6e9787b8aba21b7a518287b Mon Sep 17 00:00:00 2001
From: Michael Kirk <michael@signal.org>
Date: Sun, 19 Aug 2018 00:59:20 +0200
Subject: [PATCH 1/2] theme gallery section headers

// FREEBIE
---
 Signal/src/ViewControllers/MediaGalleryViewController.swift | 2 +-
 Signal/src/ViewControllers/MediaTileViewController.swift    | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/Signal/src/ViewControllers/MediaGalleryViewController.swift b/Signal/src/ViewControllers/MediaGalleryViewController.swift
index 6a63a548e..e33d8fdeb 100644
--- a/Signal/src/ViewControllers/MediaGalleryViewController.swift
+++ b/Signal/src/ViewControllers/MediaGalleryViewController.swift
@@ -35,7 +35,7 @@ public struct MediaGalleryItem: Equatable, Hashable {
 
     var thumbnailImage: UIImage {
         guard let image = attachmentStream.thumbnailImage() else {
-            owsFail("\(logTag) in \(#function) unexpectedly unable to build attachment thumbnail")
+//            owsFail("\(logTag) in \(#function) unexpectedly unable to build attachment thumbnail")
             return UIImage()
         }
 
diff --git a/Signal/src/ViewControllers/MediaTileViewController.swift b/Signal/src/ViewControllers/MediaTileViewController.swift
index 0a6366e53..a76c91c01 100644
--- a/Signal/src/ViewControllers/MediaTileViewController.swift
+++ b/Signal/src/ViewControllers/MediaTileViewController.swift
@@ -770,14 +770,17 @@ private class MediaGallerySectionHeader: UICollectionReusableView {
 
     override init(frame: CGRect) {
         label = UILabel()
+        label.textColor = Theme.primaryColor
 
-        let blurEffect = UIBlurEffect(style: .extraLight)
+        let blurEffect = Theme.barBlurEffect
         let blurEffectView = UIVisualEffectView(effect: blurEffect)
 
         blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
 
         super.init(frame: frame)
 
+        self.backgroundColor = Theme.navbarBackgroundColor.withAlphaComponent(OWSNavigationBar.backgroundBlurMutingFactor)
+
         self.addSubview(blurEffectView)
         self.addSubview(label)
 
@@ -814,6 +817,7 @@ private class MediaGalleryStaticHeader: UICollectionViewCell {
 
         addSubview(label)
 
+        label.textColor = Theme.primaryColor
         label.textAlignment = .center
         label.numberOfLines = 0
         label.autoPinEdgesToSuperviewMargins()

From 8cd290ba2be9e9f7aee6ac7e2e089bf09a4b17f1 Mon Sep 17 00:00:00 2001
From: Michael Kirk <michael@signal.org>
Date: Sun, 19 Aug 2018 01:15:09 +0200
Subject: [PATCH 2/2] fix section headers not appearing on iOS11/iPhoneX

// FREEBIE
---
 Signal/src/ViewControllers/MediaGalleryViewController.swift | 2 +-
 Signal/src/ViewControllers/MediaTileViewController.swift    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Signal/src/ViewControllers/MediaGalleryViewController.swift b/Signal/src/ViewControllers/MediaGalleryViewController.swift
index e33d8fdeb..6a63a548e 100644
--- a/Signal/src/ViewControllers/MediaGalleryViewController.swift
+++ b/Signal/src/ViewControllers/MediaGalleryViewController.swift
@@ -35,7 +35,7 @@ public struct MediaGalleryItem: Equatable, Hashable {
 
     var thumbnailImage: UIImage {
         guard let image = attachmentStream.thumbnailImage() else {
-//            owsFail("\(logTag) in \(#function) unexpectedly unable to build attachment thumbnail")
+            owsFail("\(logTag) in \(#function) unexpectedly unable to build attachment thumbnail")
             return UIImage()
         }
 
diff --git a/Signal/src/ViewControllers/MediaTileViewController.swift b/Signal/src/ViewControllers/MediaTileViewController.swift
index a76c91c01..7cfc9f1ee 100644
--- a/Signal/src/ViewControllers/MediaTileViewController.swift
+++ b/Signal/src/ViewControllers/MediaTileViewController.swift
@@ -8,7 +8,7 @@ public protocol MediaTileViewControllerDelegate: class {
     func mediaTileViewController(_ viewController: MediaTileViewController, didTapView tappedView: UIView, mediaGalleryItem: MediaGalleryItem)
 }
 
-public class MediaTileViewController: UICollectionViewController, MediaGalleryDataSourceDelegate {
+public class MediaTileViewController: UICollectionViewController, MediaGalleryDataSourceDelegate, UICollectionViewDelegateFlowLayout {
 
     private weak var mediaGalleryDataSource: MediaGalleryDataSource?