Compress the image after edit; Not generate a new image if there is no operation.

Author: zhanglong15

Sources/Exttensions/Bundle+ZLImageEditor.swift renamed to Sources/Extensions/Bundle+ZLImageEditor.swift

@@ -25,6 +25,7 @@
 //  THE SOFTWARE.
 
 import UIKit
+import Accelerate
 
 extension UIImage {
 
@@ -152,6 +153,49 @@ extension UIImage {
         return temp
     }
 
+    /// Processing speed is better than resize(:) method
+    func resize_vI(_ size: CGSize) -> UIImage? {
+        guard  let cgImage = self.cgImage else { return nil }
+        
+        var format = vImage_CGImageFormat(bitsPerComponent: 8, bitsPerPixel: 32, colorSpace: nil,
+                                          bitmapInfo: CGBitmapInfo(rawValue: CGImageAlphaInfo.first.rawValue),
+                                          version: 0, decode: nil, renderingIntent: .defaultIntent)
+        
+        var sourceBuffer = vImage_Buffer()
+        defer {
+            if #available(iOS 13.0, *) {
+                sourceBuffer.free()
+            } else {
+                sourceBuffer.data.deallocate()
+            }
+        }
+        
+        var error = vImageBuffer_InitWithCGImage(&sourceBuffer, &format, nil, cgImage, numericCast(kvImageNoFlags))
+        guard error == kvImageNoError else { return nil }
+        
+        let destWidth = Int(size.width)
+        let destHeight = Int(size.height)
+        let bytesPerPixel = cgImage.bitsPerPixel / 8
+        let destBytesPerRow = destWidth * bytesPerPixel
+        
+        let destData = UnsafeMutablePointer<UInt8>.allocate(capacity: destHeight * destBytesPerRow)
+        defer {
+            destData.deallocate()
+        }
+        var destBuffer = vImage_Buffer(data: destData, height: vImagePixelCount(destHeight), width: vImagePixelCount(destWidth), rowBytes: destBytesPerRow)
+        
+        // scale the image
+        error = vImageScale_ARGB8888(&sourceBuffer, &destBuffer, nil, numericCast(kvImageHighQualityResampling))
+        guard error == kvImageNoError else { return nil }
+        
+        // create a CGImage from vImage_Buffer
+        guard let destCGImage = vImageCreateCGImageFromBuffer(&destBuffer, &format, nil, nil, numericCast(kvImageNoFlags), &error)?.takeRetainedValue() else { return nil }
+        guard error == kvImageNoError else { return nil }
+        
+        // create a UIImage
+        return UIImage(cgImage: destCGImage, scale: self.scale, orientation: self.imageOrientation)
+    }
+    
     func toCIImage() -> CIImage? {
         var ci = self.ciImage
         if ci == nil, let cg = self.cgImage {

Sources/Exttensions/CGFloat+ZLImageEditor.swift renamed to Sources/Extensions/CGFloat+ZLImageEditor.swift

@@ -668,9 +668,22 @@ public class ZLEditImageViewController: UIViewController {
             }
         }
 
-        var image = self.buildImage()
-        image = image.clipImage(self.angle, self.editRect) ?? image
-        self.editFinishBlock?(image, ZLEditImageModel(drawPaths: self.drawPaths, mosaicPaths: self.mosaicPaths, editRect: self.editRect, angle: self.angle, selectRatio: self.selectRatio, selectFilter: self.currentFilter, textStickers: textStickers, imageStickers: imageStickers))
+        var hasEdit = true
+        if self.drawPaths.isEmpty, self.editRect.size == self.imageSize, self.angle == 0, self.mosaicPaths.isEmpty, imageStickers.isEmpty, textStickers.isEmpty, self.currentFilter.applier == nil {
+            hasEdit = false
+        }
+        
+        var resImage = self.originalImage
+        let editModel = ZLEditImageModel(drawPaths: self.drawPaths, mosaicPaths: self.mosaicPaths, editRect: self.editRect, angle: self.angle, selectRatio: self.selectRatio, selectFilter: self.currentFilter, textStickers: textStickers, imageStickers: imageStickers)
+        if hasEdit {
+            resImage = self.buildImage()
+            resImage = resImage.clipImage(self.angle, self.editRect) ?? resImage
+            if let resizeImage = resImage.resize_vI(CGSize(width: resImage.size.width / 2, height: resImage.size.height / 2)) {
+                resImage = resizeImage
+            }
+        }
+        self.editFinishBlock?(resImage, editModel)
+        
         self.dismiss(animated: self.animateDismiss, completion: nil)
     }
 

Sources/Exttensions/Cell+ZLImageEditor.swift renamed to Sources/Extensions/Cell+ZLImageEditor.swift

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name                  = 'ZLImageEditor'
-  s.version               = '1.0.1'
+  s.version               = '1.0.2'
   s.summary               = 'A powerful image editor framework. Supports graffiti, cropping, mosaic, text stickers, picture stickers, filters.'
 
   s.homepage              = 'https://github.com/longitachi/ZLImageEditor'
@@ -14,7 +14,7 @@ Pod::Spec.new do |s|
   s.swift_versions        = ['5.0', '5.1', '5.2']
 
   s.requires_arc          = true
-  s.frameworks            = 'UIKit'
+  s.frameworks            = 'UIKit', 'Accelerate'
 
   s.resources             = 'Sources/*.{png,bundle}'
 

Sources/Exttensions/String+ZLImageEditor.swift renamed to Sources/Extensions/String+ZLImageEditor.swift

@@ -83,7 +83,7 @@
 				E40208DA256B9BA60077F5DC /* ZLImageEditor.h */,
 				E4020904256BA0390077F5DC /* ZLImageEditor.bundle */,
 				E4020902256BA00D0077F5DC /* General */,
-				E4020903256BA01F0077F5DC /* Exttensions */,
+				E4020903256BA01F0077F5DC /* Extensions */,
 				E40208DB256B9BA60077F5DC /* Info.plist */,
 			);
 			path = Sources;
@@ -106,7 +106,7 @@
 			path = General;
 			sourceTree = "<group>";
 		};
-		E4020903256BA01F0077F5DC /* Exttensions */ = {
+		E4020903256BA01F0077F5DC /* Extensions */ = {
 			isa = PBXGroup;
 			children = (
 				E4020917256BA6840077F5DC /* UIControl+ZLImageEditor.swift */,
@@ -116,7 +116,7 @@
 				E40208FA256BA0080077F5DC /* String+ZLImageEditor.swift */,
 				E40208F9256BA0070077F5DC /* UIImage+ZLImageEditor.swift */,
 			);
-			path = Exttensions;
+			path = Extensions;
 			sourceTree = "<group>";
 		};
 /* End PBXGroup section */