Merge branch 'charlesmchen/tweakTextInsets'

Signal/src/ViewControllers/ConversationView/Cells/OWSBubbleView.h

@@ -8,10 +8,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 extern const CGFloat kOWSMessageCellCornerRadius;
 
-extern const CGFloat kBubbleTextHInset;
-extern const CGFloat kBubbleTextTopInset;
-extern const CGFloat kBubbleTextBottomInset;
-
 @class OWSBubbleView;
 
 @protocol OWSBubbleViewPartner <NSObject>

Signal/src/ViewControllers/ConversationView/Cells/OWSBubbleView.m

@@ -9,10 +9,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 const CGFloat kOWSMessageCellCornerRadius = 18;
 
-const CGFloat kBubbleTextHInset = 10.f;
-const CGFloat kBubbleTextTopInset = 8.f;
-const CGFloat kBubbleTextBottomInset = 6.f;
-
 @interface OWSBubbleView ()
 
 @property (nonatomic) CAShapeLayer *maskLayer;

Signal/src/ViewControllers/ConversationView/Cells/OWSMessageBubbleView.h

@@ -66,8 +66,6 @@ typedef NS_ENUM(NSUInteger, OWSMessageGestureLocation) {
 
 @property (nonatomic, nullable, readonly) UIView *bodyMediaView;
 
-@property (nonatomic) BOOL alwaysShowBubbleTail;
-
 @property (nonatomic, weak) id<OWSMessageBubbleViewDelegate> delegate;
 
 - (instancetype)init NS_UNAVAILABLE;

Signal/src/ViewControllers/ConversationView/Cells/OWSMessageBubbleView.m

@@ -390,6 +390,9 @@ NS_ASSUME_NONNULL_BEGIN
         }
     }
 
+    OWSDirectionalEdgeInsets *textInsets = self.layoutInfo.textInsets;
+    OWSAssert(textInsets);
+
     OWSMessageTextView *_Nullable bodyTextView = nil;
     // We render malformed messages as "empty text" messages,
     // so create a text view if there is no body media view.
@@ -399,8 +402,8 @@ NS_ASSUME_NONNULL_BEGIN
     if (bodyTextView) {
         [self.bubbleView addSubview:bodyTextView];
         [self.viewConstraints addObjectsFromArray:@[
-            [bodyTextView autoPinLeadingToSuperviewMarginWithInset:self.textLeadingMargin],
-            [bodyTextView autoPinTrailingToSuperviewMarginWithInset:self.textTrailingMargin],
+            [bodyTextView autoPinLeadingToSuperviewMarginWithInset:textInsets.leading],
+            [bodyTextView autoPinTrailingToSuperviewMarginWithInset:textInsets.trailing],
         ]];
         [self.viewConstraints
             addObject:[bodyTextView autoSetDimension:ALDimensionHeight toSize:bodyTextContentSize.height]];
@@ -409,13 +412,13 @@ NS_ASSUME_NONNULL_BEGIN
             [self.viewConstraints addObject:[bodyTextView autoPinEdge:ALEdgeTop
                                                                toEdge:ALEdgeBottom
                                                                ofView:lastSubview
-                                                           withOffset:self.textTopMargin]];
+                                                           withOffset:textInsets.top]];
         } else {
             [self.viewConstraints
-                addObject:[bodyTextView autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:self.textTopMargin]];
+                addObject:[bodyTextView autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:textInsets.top]];
         }
         lastSubview = bodyTextView;
-        bottomMargin = self.textBottomMargin;
+        bottomMargin = textInsets.bottom;
     }
 
     UIView *_Nullable tapForMoreLabel = [self createTapForMoreLabelIfNecessary];
@@ -424,13 +427,13 @@ NS_ASSUME_NONNULL_BEGIN
         OWSAssert(lastSubview == bodyTextView);
         [self.bubbleView addSubview:tapForMoreLabel];
         [self.viewConstraints addObjectsFromArray:@[
-            [tapForMoreLabel autoPinLeadingToSuperviewMarginWithInset:self.textLeadingMargin],
-            [tapForMoreLabel autoPinTrailingToSuperviewMarginWithInset:self.textTrailingMargin],
+            [tapForMoreLabel autoPinLeadingToSuperviewMarginWithInset:textInsets.leading],
+            [tapForMoreLabel autoPinTrailingToSuperviewMarginWithInset:textInsets.trailing],
             [tapForMoreLabel autoPinEdge:ALEdgeTop toEdge:ALEdgeBottom ofView:lastSubview],
             [tapForMoreLabel autoSetDimension:ALDimensionHeight toSize:self.tapForMoreHeight],
         ]];
         lastSubview = tapForMoreLabel;
-        bottomMargin = self.textBottomMargin;
+        bottomMargin = textInsets.bottom;
     }
 
     OWSAssert(lastSubview);
@@ -859,7 +862,10 @@ NS_ASSUME_NONNULL_BEGIN
         return CGSizeZero;
     }
 
-    CGFloat hMargins = self.textTrailingMargin + self.textLeadingMargin;
+    OWSDirectionalEdgeInsets *textInsets = self.layoutInfo.textInsets;
+    OWSAssert(textInsets);
+
+    CGFloat hMargins = textInsets.leading + textInsets.trailing;
 
     const int maxTextWidth = (int)floor(self.layoutInfo.maxMessageWidth - hMargins);
 
@@ -870,7 +876,7 @@ NS_ASSUME_NONNULL_BEGIN
 
     if (includeMargins) {
         result.width += hMargins;
-        result.height += self.textTopMargin + self.textBottomMargin;
+        result.height += textInsets.top + textInsets.bottom;
     }
 
     return CGSizeCeil(result);
@@ -1018,28 +1024,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark -
 
-- (CGFloat)textLeadingMargin
-{
-    CGFloat result = kBubbleTextHInset;
-    return result;
-}
-
-- (CGFloat)textTrailingMargin
-{
-    CGFloat result = kBubbleTextHInset;
-    return result;
-}
-
-- (CGFloat)textTopMargin
-{
-    return kBubbleTextTopInset;
-}
-
-- (CGFloat)textBottomMargin
-{
-    return kBubbleTextBottomInset;
-}
-
 - (UIColor *)bodyTextColor
 {
     return self.isIncoming ? [UIColor blackColor] : [UIColor whiteColor];

Signal/src/ViewControllers/ConversationView/ConversationLayoutInfo.swift

@@ -4,6 +4,34 @@
 
 import Foundation
 
+@objc
+public class OWSDirectionalEdgeInsets: NSObject {
+
+    @objc public let leading: CGFloat
+    @objc public let trailing: CGFloat
+    @objc public let top: CGFloat
+    @objc public let bottom: CGFloat
+
+    @objc
+    public required init(top: CGFloat = 0,
+                         leading: CGFloat = 0,
+                         bottom: CGFloat = 0,
+                         trailing: CGFloat = 0) {
+
+        self.leading = leading
+        self.trailing = trailing
+        self.top = top
+        self.bottom = bottom
+
+        super.init()
+    }
+
+    static var zero = OWSDirectionalEdgeInsets(top: 0,
+                                               leading: 0,
+                                               bottom: 0,
+                                               trailing: 0)
+}
+
 @objc
 public class ConversationLayoutInfo: NSObject {
 
@@ -40,6 +68,8 @@ public class ConversationLayoutInfo: NSObject {
     @objc public var maxMessageWidth: CGFloat = 0
     @objc public var maxFooterWidth: CGFloat = 0
 
+    @objc public var textInsets = OWSDirectionalEdgeInsets.zero
+
     @objc
     public required init(thread: TSThread) {
 
@@ -49,8 +79,25 @@ public class ConversationLayoutInfo: NSObject {
         super.init()
 
         updateProperties()
+
+        NotificationCenter.default.addObserver(self,
+                                               selector: #selector(uiContentSizeCategoryDidChange),
+                                               name: NSNotification.Name.UIContentSizeCategoryDidChange,
+                                               object: nil)
+    }
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+
+    @objc func uiContentSizeCategoryDidChange() {
+        SwiftAssertIsOnMainThread(#function)
+
+        updateProperties()
     }
 
+    // MARK: -
+
     private func updateProperties() {
         if thread.isGroupThread() {
             gutterLeading = 40
@@ -70,5 +117,19 @@ public class ConversationLayoutInfo: NSObject {
         maxMessageWidth = floor(contentWidth * 0.8)
         // TODO: Should this be different?
         maxFooterWidth = maxMessageWidth - 10
+
+        let messageTextFont = UIFont.ows_dynamicTypeBody
+        // Don't include the distance from the "cap height" to the top of the UILabel
+        // in the top margin.
+        let textInsetTop = max(0, 12 - (messageTextFont.ascender - messageTextFont.capHeight))
+        // Don't include the distance from the "baseline" to the bottom of the UILabel
+        // (e.g. the descender) in the top margin. Note that UIFont.descender is a
+        // negative value.
+        let textInsetBottom = max(0, 12 - abs(messageTextFont.descender))
+
+        textInsets = OWSDirectionalEdgeInsets(top: textInsetTop,
+                                   leading: 12,
+                                   bottom: textInsetBottom,
+                                   trailing: 12)
     }
 }

Signal/src/ViewControllers/MessageDetailViewController.swift

@@ -346,7 +346,6 @@ class MessageDetailViewController: OWSViewController, MediaGalleryDataSourceDele
         messageBubbleView.viewItem = viewItem
         messageBubbleView.cellMediaCache = NSCache()
         messageBubbleView.layoutInfo = self.conversationLayoutInfo
-        messageBubbleView.alwaysShowBubbleTail = true
         messageBubbleView.configureViews()
         messageBubbleView.loadContent()