implement image preview for quotes

DcCore/DcCore/Extensions/UIView+Extensions.swift

@@ -176,6 +176,20 @@ public extension UIView {
         return constraint
     }
 
+    func constraintTrailingToLeadingOf(_ view: UIView, paddingTrailing: CGFloat = 0.0, priority: UILayoutPriority? = .none) -> NSLayoutConstraint {
+        let constraint = NSLayoutConstraint(
+            item: self,
+            attribute: .trailing,
+            relatedBy: .equal,
+            toItem: view,
+            attribute: .leading,
+            multiplier: 1.0,
+            constant: -paddingTrailing)
+        if let priority = priority {
+            constraint.priority = priority
+        }
+        return constraint
+    }
 
     func constraintCenterXTo(_ view: UIView, paddingX: CGFloat = 0.0, priority: UILayoutPriority? = .none) -> NSLayoutConstraint {
         let constraint = NSLayoutConstraint(item: self,

deltachat-ios/Chat/Views/Cells/BaseMessageCell.swift

@@ -276,6 +276,7 @@ public class BaseMessageCell: UITableViewCell {
                 quoteView.senderTitle.text = contact.displayName
                 quoteView.senderTitle.textColor = contact.color
                 quoteView.citeBar.backgroundColor = contact.color
+                quoteView.imagePreview.image = quoteMsg.image
             }
         } else {
             quoteView.isHidden = true

deltachat-ios/Chat/Views/QuoteView.swift

@@ -14,7 +14,6 @@ public class QuoteView: UIView {
     public lazy var quote: UILabel = {
         let view = UILabel()
         view.font = UIFont.preferredFont(for: .caption2, weight: .light)
-        view.text = "quote"
         view.textColor = DcColors.grayTextColor
         view.translatesAutoresizingMaskIntoConstraints = false
         return view
@@ -23,7 +22,12 @@ public class QuoteView: UIView {
     public lazy var senderTitle: UILabel = {
         let view = UILabel()
         view.font = UIFont.preferredFont(for: .caption2, weight: .semibold)
-        view.text = "title"
+        view.translatesAutoresizingMaskIntoConstraints = false
+        return view
+    }()
+
+    public lazy var imagePreview: UIImageView = {
+        let view = UIImageView()
         view.translatesAutoresizingMaskIntoConstraints = false
         return view
     }()
@@ -40,20 +44,25 @@ public class QuoteView: UIView {
     func setupSubviews() {
         addSubview(citeBar)
         addSubview(senderTitle)
+        addSubview(imagePreview)
         addSubview(quote)
 
         addConstraints([
+            imagePreview.constraintAlignTrailingTo(self, paddingTrailing: 16),
+            imagePreview.constraintHeightTo(36),
+            imagePreview.constraintWidthTo(36),
+            imagePreview.constraintCenterYTo(citeBar),
             senderTitle.constraintAlignTopTo(self),
             senderTitle.constraintAlignLeadingTo(self, paddingLeading: 24),
-            senderTitle.constraintAlignTrailingTo(self, paddingTrailing: 8),
+            senderTitle.constraintTrailingToLeadingOf(imagePreview, paddingTrailing: 8),
             quote.constraintAlignLeadingTo(self, paddingLeading: 24),
             quote.constraintToBottomOf(senderTitle),
-            quote.constraintAlignTrailingTo(self, paddingTrailing: 8),
+            quote.constraintTrailingToLeadingOf(imagePreview, paddingTrailing: 8),
             quote.constraintAlignBottomTo(self, paddingBottom: 4),
             citeBar.constraintAlignLeadingTo(self, paddingLeading: 16),
             citeBar.constraintAlignTopTo(senderTitle, paddingTop: 4),
             citeBar.constraintAlignBottomTo(quote, paddingBottom: 4),
-            citeBar.constraintWidthTo(3)
+            citeBar.constraintWidthTo(3),
         ])
     }
 
@@ -63,5 +72,6 @@ public class QuoteView: UIView {
         senderTitle.text = nil
         senderTitle.attributedText = nil
         citeBar.backgroundColor = DcColors.grayDateColor
+        imagePreview.image = nil
     }
 }