feat(helpers): add resize image before compression ✨ (#356)

Author: PierreBrisorgueil

waosSwift/config/default/development.json

@@ -74,6 +74,7 @@
     ],
     "img": {
         "compresion": 0.25,
+        "max": 4096,
         "styles": {
             "blured": 10,
             "overlayFraction": 0.9

waosSwift/lib/helpers/Extensions/UIImage.swift

@@ -27,23 +27,23 @@ extension UIImage {
         guard let cgImage2 = ciContext.createCGImage(resultImage, from: inputImage.extent) else { return self }
         return UIImage(cgImage: cgImage2)
     }
-
+    
     /**
      * @desc lighter image
      * @param {CGFloat} percentage,
      */
     func lighter(by percentage: CGFloat = 30) -> UIImage? {
         return self.adjust(by: abs(percentage) )
     }
-
+    
     /**
      * @desc darker image
      * @param {CGFloat} percentage,
      */
     func darker(by percentage: CGFloat = 30) -> UIImage? {
         return self.adjust(by: -1 * abs(percentage) )
     }
-
+    
     /**
      * @desc adjust image darkness / lightness from coefficient
      * @param {CGFloat} percentage,
@@ -59,7 +59,7 @@ extension UIImage {
         guard let cgImage2 = ciContext.createCGImage(resultImage, from: inputImage.extent) else { return self }
         return UIImage(cgImage: cgImage2)
     }
-
+    
     /**
      * @desc adjust image orientation if needed in exif
      */
@@ -75,4 +75,22 @@ extension UIImage {
             return result
         }
     }
+    
+    /**
+     * @desc resizeImage width max target Size
+     */
+    func resizeImage(targetSize: CGSize) -> UIImage? {
+        let size = self.size
+        let widthRatio  = targetSize.width  / size.width
+        let heightRatio = targetSize.height / size.height
+        let newSize = widthRatio > heightRatio ?  CGSize(width: size.width * heightRatio, height: size.height * heightRatio) : CGSize(width: size.width * widthRatio, height: size.height * widthRatio)
+        let rect = CGRect(x: 0, y: 0, width: newSize.width, height: newSize.height)
+        
+        UIGraphicsBeginImageContextWithOptions(newSize, false, 1.0)
+        self.draw(in: rect)
+        let newImage = UIGraphicsGetImageFromCurrentImageContext()
+        UIGraphicsEndImageContext()
+        
+        return newImage
+    }
 }

waosSwift/modules/core/controllers/CoreFormController.swift

@@ -38,6 +38,7 @@ class CoreFormController: FormViewController {
         static let tabBarTitle = NSString(string: config["theme"]["tabBar"]["title"].string ?? "").boolValue
         static let tabBarBorder = NSString(string: config["theme"]["tabBar"]["border"].string ?? "").boolValue
         static let imgCompression = CGFloat(config["img"]["compresion"].float ?? 1.0)
+        static let imgMax = CGFloat(config["img"]["max"].float ?? 4096)
         static let margin = CGFloat(config["theme"]["global"]["margin"].int ?? 0)
         static let radius = CGFloat(config["theme"]["global"]["radius"].int ?? 0)
         static let timesButtonsThrottle = Int(config["times"]["buttons"]["throttle"].int ?? 2000)

waosSwift/modules/users/controllers/UserViewController.swift

@@ -142,7 +142,7 @@ class UserViewController: CoreFormController, View {
             <<< self.inputAvatar.cellUpdate { cell, _ in
                 cell.accessoryView?.layer.cornerRadius = (cell.accessoryView?.frame.height ?? 20)/2
             }.onChange({ (img) in
-                if let aux = img.value?.adjustOrientation() {
+                if let aux = img.value?.adjustOrientation()?.resizeImage(targetSize: CGSize(width: Metric.imgMax, height: Metric.imgMax)) {
                     self.avatar.accept(aux.jpegData(compressionQuality: Metric.imgCompression))
                 } else {
                     self.avatar.accept(nil)