From e46017f3150d4d37b022dbf2d9761dd25b093cb3 Mon Sep 17 00:00:00 2001
From: Matt Bruce <matt.bruce@verizon.com>
Date: Thu, 10 Nov 2022 14:43:02 -0600
Subject: [PATCH] updated FontLabelAttribute for Kerning/line spacing/ line
 height

Signed-off-by: Matt Bruce <matt.bruce@verizon.com>
---
 .../Label/Attributes/FontLabelAttribute.swift | 42 ++++++++++++++++++-
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/VDS/Components/Label/Attributes/FontLabelAttribute.swift b/VDS/Components/Label/Attributes/FontLabelAttribute.swift
index 6456b76c..a1fc2ff2 100644
--- a/VDS/Components/Label/Attributes/FontLabelAttribute.swift
+++ b/VDS/Components/Label/Attributes/FontLabelAttribute.swift
@@ -24,21 +24,59 @@ public struct FontLabelAttribute: LabelAttributeModel {
     public var length: Int
     public var style: TypographicalStyle
     public var color: UIColor
+    public var textPosition: TextPosition
+    public var lineBreakMode: NSLineBreakMode
     //--------------------------------------------------
     // MARK: - Initializer
     //--------------------------------------------------
-    public init(location: Int, length: Int, style: TypographicalStyle, color: UIColor = .black) {
+    public init(location: Int, length: Int, style: TypographicalStyle, color: UIColor = .black, textPosition: TextPosition = .left, lineBreakMode: NSLineBreakMode = .byWordWrapping) {
         self.location = location
         self.length = length
         self.style = style
         self.color = color
+        self.textPosition = textPosition
+        self.lineBreakMode = lineBreakMode
     }
     
     public func setAttribute(on attributedString: NSMutableAttributedString) {
-        
         attributedString.removeAttribute(.font, range: range)
         attributedString.removeAttribute(.foregroundColor, range: range)
         attributedString.addAttribute(.font, value: style.font, range: range)
         attributedString.addAttribute(.foregroundColor, value: color, range: range)
+        setStyleAttributes(attributedString)
     }
+    
+    private func setStyleAttributes(_ attributedString: NSMutableAttributedString) {
+        //set letterSpacing
+        if style.letterSpacing > 0.0 {
+            attributedString.removeAttribute(.kern, range: range)
+            attributedString.addAttribute(.kern, value: style.letterSpacing, range: range)
+        }
+        
+        //set lineHeight
+        if style.lineHeight > 0.0 {
+            let lineHeight = style.lineHeight
+            let adjustment = lineHeight > style.font.lineHeight ? 2.0 : 1.0
+            let baselineOffset = (lineHeight - style.font.lineHeight) / 2.0 / adjustment
+            let paragraph = NSMutableParagraphStyle().with {
+                $0.maximumLineHeight = lineHeight
+                $0.minimumLineHeight = lineHeight
+                $0.alignment = textPosition.textAlignment
+                $0.lineBreakMode = lineBreakMode
+            }
+            attributedString.removeAttribute(.baselineOffset, range: range)
+            attributedString.removeAttribute(.paragraphStyle, range: range)
+            attributedString.addAttribute(.baselineOffset, value: baselineOffset, range: range)
+            attributedString.addAttribute(.paragraphStyle, value: paragraph, range: range)
+            
+        } else if textPosition != .left {
+            let paragraph = NSMutableParagraphStyle().with {
+                $0.alignment = textPosition.textAlignment
+                $0.lineBreakMode = lineBreakMode
+            }
+            attributedString.removeAttribute(.paragraphStyle, range: range)
+            attributedString.addAttribute(.paragraphStyle, value: paragraph, range: range)
+        }
+    }
+
 }