[GH-1440] - Added function to insert a text in the current image.

mapbox · Jul 24, 2018 · 1de6956 · 1de6956
1 parent d8ec835
commit 1de6956
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/MapboxNavigation/UIImage.swift b/MapboxNavigation/UIImage.swift
@@ -9,4 +9,22 @@ extension UIImage {
         UIGraphicsEndImageContext()
         return tintedImage
     }
+
+    func insert(text: NSString, color: UIColor, font: UIFont, atPoint: CGPoint, scale: CGFloat) -> UIImage? {
+        UIGraphicsBeginImageContextWithOptions(size, false, scale)
+
+        let textStyle = NSMutableParagraphStyle()
+        textStyle.alignment = .center
+
+        let textFontAttributes: [NSAttributedStringKey: Any] = [.font: font, .foregroundColor: color, .paragraphStyle: textStyle]
+        draw(in: CGRect(x: 0, y: 0, width: size.width, height: size.height))
+
+        let rect = CGRect(x: atPoint.x, y: atPoint.y, width: size.width, height: size.height)
+        text.draw(in: rect.integral, withAttributes: textFontAttributes)
+
+        let newImage = UIGraphicsGetImageFromCurrentImageContext()
+        UIGraphicsEndImageContext()
+
+        return newImage
+    }
 }