Rework "empty inbox" state.

Signal/Images.xcassets/home_empty_splash_1.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "human-1@3x.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Signal/Images.xcassets/home_empty_splash_2.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "human-2@3x.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Signal/Images.xcassets/home_empty_splash_3.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "human-3@3x.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Signal/Images.xcassets/home_empty_splash_4.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "human-4@3x.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Signal/Images.xcassets/home_empty_splash_5.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "human-5@3x.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Signal/src/ViewControllers/AppSettings/OWSLinkDeviceViewController.m

@@ -56,7 +56,7 @@ NS_ASSUME_NONNULL_BEGIN
     [self.qrScanningController.view autoPinEdgeToSuperviewEdge:ALEdgeLeading];
     [self.qrScanningController.view autoPinEdgeToSuperviewEdge:ALEdgeTrailing];
     [self.qrScanningController.view autoPinToTopLayoutGuideOfViewController:self withInset:0.f];
-    [self.qrScanningController.view autoPinToAspectRatio:1.f];
+    [self.qrScanningController.view autoPinToSquareAspectRatio];
 
     UIView *bottomView = [UIView new];
     [self.view addSubview:bottomView];

Signal/src/ViewControllers/HomeView/HomeViewController.m

@@ -7,6 +7,7 @@
 #import "AppSettingsViewController.h"
 #import "HomeViewCell.h"
 #import "NewContactThreadViewController.h"
+#import "OWS2FARegistrationViewController.h"
 #import "OWSNavigationController.h"
 #import "OWSPrimaryStorage.h"
 #import "ProfileViewController.h"
@@ -24,6 +25,7 @@
 #import <SignalMessaging/OWSContactsManager.h>
 #import <SignalMessaging/OWSFormat.h>
 #import <SignalMessaging/SignalMessaging-Swift.h>
+#import <SignalMessaging/Theme.h>
 #import <SignalMessaging/UIUtil.h>
 #import <SignalServiceKit/OWSMessageSender.h>
 #import <SignalServiceKit/OWSMessageUtils.h>
@@ -68,7 +70,7 @@ NSString *const kArchivedConversationsReuseIdentifier = @"kArchivedConversations
     OWSBlockListCacheDelegate>
 
 @property (nonatomic) UITableView *tableView;
-@property (nonatomic) UILabel *emptyBoxLabel;
+@property (nonatomic) UIView *emptyInboxView;
 
 @property (nonatomic) YapDatabaseConnection *editingDbConnection;
 @property (nonatomic) YapDatabaseConnection *uiDatabaseConnection;
@@ -328,17 +330,42 @@ NSString *const kArchivedConversationsReuseIdentifier = @"kArchivedConversations
     self.tableView.rowHeight = UITableViewAutomaticDimension;
     self.tableView.estimatedRowHeight = 60;
 
-    UILabel *emptyBoxLabel = [UILabel new];
-    self.emptyBoxLabel = emptyBoxLabel;
-    [self.view addSubview:emptyBoxLabel];
-
-    //  Let the label use as many lines as needed. It will very rarely be more than 2 but may happen for verbose locs.
-    [emptyBoxLabel setNumberOfLines:0];
-    emptyBoxLabel.lineBreakMode = NSLineBreakByWordWrapping;
-
-    [emptyBoxLabel autoPinLeadingToSuperviewMargin];
-    [emptyBoxLabel autoPinTrailingToSuperviewMargin];
-    [emptyBoxLabel autoAlignAxisToSuperviewAxis:ALAxisHorizontal];
+    NSArray<NSString *> *emptyInboxImageNames = @[
+                                                  @"home_empty_splash_1",
+                                                  @"home_empty_splash_2",
+                                                  @"home_empty_splash_3",
+                                                  @"home_empty_splash_4",
+                                                  @"home_empty_splash_5",
+                                                  ];
+    NSString *emptyInboxImageName = emptyInboxImageNames[arc4random_uniform((uint32_t) emptyInboxImageNames.count)];
+    UIImageView *emptyInboxImageView = [UIImageView new];
+    emptyInboxImageView.image = [UIImage imageNamed:emptyInboxImageName];
+    emptyInboxImageView.layer.minificationFilter = kCAFilterTrilinear;
+    emptyInboxImageView.layer.magnificationFilter = kCAFilterTrilinear;
+    [emptyInboxImageView autoPinToAspectRatioWithSize:emptyInboxImageView.image.size];
+    
+    UILabel *emptyInboxLabel = [UILabel new];
+    emptyInboxLabel.text = NSLocalizedString(@"INBOX_VIEW_EMPTY_INBOX",
+                                             @"Message shown in the home view when the inbox is empty.");
+    emptyInboxLabel.font = UIFont.ows_dynamicTypeBodyFont;
+    emptyInboxLabel.textColor = Theme.secondaryColor;
+    emptyInboxLabel.textAlignment = NSTextAlignmentCenter;
+    emptyInboxLabel.numberOfLines = 0;
+    emptyInboxLabel.lineBreakMode = NSLineBreakByWordWrapping;
+    
+    UIStackView *emptyInboxStack = [[UIStackView alloc] initWithArrangedSubviews:@[
+                                                                                   emptyInboxImageView,
+                                                                                   emptyInboxLabel,
+                                                                                   ]];
+    emptyInboxStack.axis = UILayoutConstraintAxisVertical;
+    emptyInboxStack.alignment = UIStackViewAlignmentCenter;
+    emptyInboxStack.spacing = 12;
+    emptyInboxStack.layoutMargins = UIEdgeInsetsMake(50, 50, 50, 50);
+    emptyInboxStack.layoutMarginsRelativeArrangement = YES;
+    self.emptyInboxView = emptyInboxStack;
+    [self.view addSubview:emptyInboxStack];
+    [emptyInboxStack autoPinWidthToSuperviewMargins];
+    [emptyInboxStack autoVCenterInSuperview];
 
     UIRefreshControl *pullToRefreshView = [UIRefreshControl new];
     pullToRefreshView.tintColor = [UIColor grayColor];
@@ -1445,67 +1472,14 @@ NSString *const kArchivedConversationsReuseIdentifier = @"kArchivedConversations
     NSUInteger archiveCount = self.numberOfArchivedThreads;
 
     if (self.homeViewMode == HomeViewMode_Inbox && inboxCount == 0 && archiveCount == 0) {
-        [self updateEmptyBoxText];
         [_tableView setHidden:YES];
-        [_emptyBoxLabel setHidden:NO];
-    } else if (self.homeViewMode == HomeViewMode_Archive && archiveCount == 0) {
-        [self updateEmptyBoxText];
-        [_tableView setHidden:YES];
-        [_emptyBoxLabel setHidden:NO];
+        [self.emptyInboxView setHidden:NO];
     } else {
-        [_emptyBoxLabel setHidden:YES];
         [_tableView setHidden:NO];
+        [self.emptyInboxView setHidden:YES];
     }
 }
 
-- (void)updateEmptyBoxText
-{
-    // TODO: Theme, review with design.
-    _emptyBoxLabel.textColor = [UIColor grayColor];
-    _emptyBoxLabel.font = [UIFont ows_regularFontWithSize:18.f];
-    _emptyBoxLabel.textAlignment = NSTextAlignmentCenter;
-
-    NSString *firstLine = @"";
-    NSString *secondLine = @"";
-
-    if (self.homeViewMode == HomeViewMode_Inbox) {
-        if ([Environment.shared.preferences hasSentAMessage]) {
-            firstLine = NSLocalizedString(
-                @"EMPTY_INBOX_TITLE", @"Header text an existing user sees when viewing an empty inbox");
-            secondLine = NSLocalizedString(
-                @"EMPTY_INBOX_TEXT", @"Body text an existing user sees when viewing an empty inbox");
-        } else {
-            firstLine = NSLocalizedString(
-                @"EMPTY_INBOX_NEW_USER_TITLE", @"Header text a new user sees when viewing an empty inbox");
-            secondLine = NSLocalizedString(
-                @"EMPTY_INBOX_NEW_USER_TEXT", @"Body text a new user sees when viewing an empty inbox");
-        }
-    } else {
-        OWSAssertDebug(self.homeViewMode == HomeViewMode_Archive);
-        firstLine = NSLocalizedString(
-            @"EMPTY_ARCHIVE_TITLE", @"Header text an existing user sees when viewing an empty archive");
-        secondLine = NSLocalizedString(
-            @"EMPTY_ARCHIVE_TEXT", @"Body text an existing user sees when viewing an empty archive");
-    }
-    NSMutableAttributedString *fullLabelString =
-        [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@\n%@", firstLine, secondLine]];
-
-    [fullLabelString addAttribute:NSFontAttributeName
-                            value:[UIFont ows_boldFontWithSize:15.f]
-                            range:NSMakeRange(0, firstLine.length)];
-    [fullLabelString addAttribute:NSFontAttributeName
-                            value:[UIFont ows_regularFontWithSize:14.f]
-                            range:NSMakeRange(firstLine.length + 1, secondLine.length)];
-    [fullLabelString addAttribute:NSForegroundColorAttributeName
-                            value:Theme.primaryColor
-                            range:NSMakeRange(0, firstLine.length)];
-    // TODO: Theme, Review with design.
-    [fullLabelString addAttribute:NSForegroundColorAttributeName
-                            value:Theme.secondaryColor
-                            range:NSMakeRange(firstLine.length + 1, secondLine.length)];
-    _emptyBoxLabel.attributedText = fullLabelString;
-}
-
 // We want to delay asking for a review until an opportune time.
 // If the user has *just* launched Signal they intend to do something, we don't want to interrupt them.
 // If the user hasn't sent a message, we don't want to ask them for a review yet.

Signal/src/views/RemoteVideoView.m

@@ -1,5 +1,5 @@
 //
-//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2019 Open Whisper Systems. All rights reserved.
 //
 
 #import "RemoteVideoView.h"
@@ -104,7 +104,6 @@ NS_ASSUME_NONNULL_BEGIN
     }
 
     CGFloat aspectRatio = remoteVideoSize.width / remoteVideoSize.height;
-
     OWSLogVerbose(@"Remote video size: width: %f height: %f ratio: %f",
         remoteVideoSize.width,
         remoteVideoSize.height,
@@ -125,7 +124,7 @@ NS_ASSUME_NONNULL_BEGIN
         // to approximate "scale to fill" contentMode
         // - Pin aspect ratio
         // - Width and height is *at least* as wide as superview
-        [constraints addObject:[videoView autoPinToAspectRatio:aspectRatio]];
+        [constraints addObject:[videoView autoPinToAspectRatioWithSize:remoteVideoSize]];
         [constraints addObject:[videoView autoSetDimension:ALDimensionWidth
                                                     toSize:containingView.width
                                                   relation:NSLayoutRelationGreaterThanOrEqual]];

Signal/translations/en.lproj/Localizable.strings

@@ -1122,6 +1122,9 @@
 /* Label reminding the user that they are in archive mode. */
 "INBOX_VIEW_ARCHIVE_MODE_REMINDER" = "These conversations are archived and will only appear in the Inbox if new messages are received.";
 
+/* Message shown in the home view when the inbox is empty. */
+"INBOX_VIEW_EMPTY_INBOX" = "Give your inbox something to write home about. Get started by messaging a friend.";
+
 /* Multi-line label explaining how to show names instead of phone numbers in your inbox */
 "INBOX_VIEW_MISSING_CONTACTS_PERMISSION" = "You can enable contacts access in the iOS Settings app to see contact names in your Signal conversation list.";
 

SignalMessaging/categories/UIView+OWS.h

@@ -41,6 +41,7 @@ CGFloat ScaleFromIPhone5(CGFloat iPhone5Value);
 - (void)autoPinHeightToHeightOfView:(UIView *)view;
 
 - (NSLayoutConstraint *)autoPinToSquareAspectRatio;
+- (NSLayoutConstraint *)autoPinToAspectRatioWithSize:(CGSize)size;
 - (NSLayoutConstraint *)autoPinToAspectRatio:(CGFloat)ratio;
 
 #pragma mark - Content Hugging and Compression Resistance

SignalMessaging/categories/UIView+OWS.m

@@ -142,6 +142,10 @@ CGFloat ScaleFromIPhone5(CGFloat iPhone5Value)
     return [self autoPinToAspectRatio:1.0];
 }
 
+- (NSLayoutConstraint *)autoPinToAspectRatioWithSize:(CGSize)size {
+    return [self autoPinToAspectRatio:size.width / size.height];
+}
+
 - (NSLayoutConstraint *)autoPinToAspectRatio:(CGFloat)ratio
 {
     // Clamp to ensure view has reasonable aspect ratio.