- The optimized image loading process;

- clearCache now global method;
- added changelog;

Author: sh-khashimov

Documentation/Changelog.md

@@ -0,0 +1,12 @@
+## CHANGELOG
+
+### v0.3.0
+- The optimized image loading process;
+- `clearCache` now global method, use: `RESegmentedControl.clearCache()`;
+
+### v0.2.1
+- fixed Auto-Layout warnings;
+
+### v0.2.0
+
+First public release

README.md

@@ -189,6 +189,10 @@ Please make sure to update tests as appropriate.
 
 Sherzod Khashimov
 
+## Changelog
+
+See [**changelog here**](/Documentation/Changelog.md)
+
 ## License
 
 RESegmentedControl is available under the MIT license. See the LICENSE file for more info.

RESegmentedControl.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'RESegmentedControl'
-  s.version          = '0.2.1'
+  s.version          = '0.3.0'
   s.summary          = 'A Customizable Segmented Control.'
 
 # This description is used to generate tags and improve search results.
@@ -22,7 +22,8 @@ Pod::Spec.new do |s|
                        DESC
 
   s.homepage         = 'https://github.com/sh-khashimov/RESegmentedControl'
-  # s.screenshots     = 'www.example.com/screenshots_1', 'www.example.com/screenshots_2'
+  s.documentation_url = 'https://sh-khashimov.github.io/RESegmentedControl'
+  s.screenshots     = 'https://raw.githubusercontent.com/sh-khashimov/RESegmentedControl/master/Images/1.png', 'https://raw.githubusercontent.com/sh-khashimov/RESegmentedControl/master/Images/2.png', 'https://raw.githubusercontent.com/sh-khashimov/RESegmentedControl/master/Images/3.png'
   s.license          = { :type => 'MIT', :file => 'LICENSE' }
   s.author           = { 'Sherzod Khashimov' => 'sh.khashimov@gmail.com' }
   s.source           = { :git => 'https://github.com/sh-khashimov/RESegmentedControl.git', :tag => s.version.to_s }

Sources/RESegmentedControl/Classes/Cells/SegmentCollectionViewCell.swift

@@ -23,25 +23,30 @@ internal class SegmentCollectionViewCell: UICollectionViewCell {
             textLabel.text = item?.title ?? ""
             textLabel.isHidden = item?.title == nil
 
-            if let imageUrl = item?.imageUrl {
-                imageDownload.downloadImage(url: imageUrl) { [weak self] (image, url, error) in
-                    guard let image = image else { return }
-                    guard imageUrl == url else { return }
-                    self?.imageView.image = image.withRenderingMode(self?.style?.imageRenderMode ?? .automatic)
-                }
-            } else {
-                if let imageName = item?.imageName {
-                    let bundle = item?.bundle ?? Bundle.main
-                    if let image = UIImage(named: imageName, in: bundle, compatibleWith: nil) {
-                        imageView.image = image.withRenderingMode(style?.imageRenderMode ?? .automatic)
-                    }
-                }
-            }
-
             imageView.isHidden = !(item?.isImageAvailable ?? false)
         }
     }
 
+    func loadImageIfNeeded() {
+        if let imageUrl = item?.imageUrl {
+            imageDownload.downloadImage(url: imageUrl) { [weak self] (image, url, error) in
+                guard let image = image else { return }
+                guard imageUrl == url else { return }
+                self?.imageView.image = image.withRenderingMode(self?.style?.imageRenderMode ?? .automatic)
+            }
+        } else if let imageName = item?.imageName {
+            let bundle = item?.bundle ?? Bundle.main
+            if let image = UIImage(named: imageName, in: bundle, compatibleWith: nil) {
+                imageView.image = image.withRenderingMode(style?.imageRenderMode ?? .automatic)
+            }
+        }
+    }
+
+    func cancelImageDownloadIfNeeded() {
+        guard item?.imageUrl != nil else { return }
+        imageDownload.cancel()
+    }
+
     private var style: SegmentItemStylable? {
         didSet {
             configUI()
@@ -54,14 +59,12 @@ internal class SegmentCollectionViewCell: UICollectionViewCell {
         self.backgroundColor = .clear
         item = nil
         imageView.image = nil
-        imageDownload.cancel()
     }
 
     override func prepareForReuse() {
         super.prepareForReuse()
         imageView.image = nil
         item = nil
-        imageDownload.cancel()
     }
 
     override var isSelected: Bool {

Sources/RESegmentedControl/Classes/Models/SegmentModel.swift

@@ -58,7 +58,7 @@ public struct SegmentModel {
             return true
         }
 
-        if let imageName = imageName, imageName != "" {
+        if imageName != "" {
             return true
         }
 

Sources/RESegmentedControl/Classes/RESegmentedControl.swift

@@ -337,6 +337,18 @@ extension RESegmentedControl: UICollectionViewDataSource {
 
         return cell ?? UICollectionViewCell()
     }
+
+    public func collectionView(_ collectionView: UICollectionView, willDisplay cell: UICollectionViewCell, forItemAt indexPath: IndexPath) {
+        guard collectionView == self.collectionView else { return }
+        guard let _cell = cell as? SegmentCollectionViewCell else { return }
+        _cell.loadImageIfNeeded()
+    }
+
+    public func collectionView(_ collectionView: UICollectionView, didEndDisplaying cell: UICollectionViewCell, forItemAt indexPath: IndexPath) {
+        guard collectionView == self.collectionView else { return }
+        guard let _cell = cell as? SegmentCollectionViewCell else { return }
+        _cell.cancelImageDownloadIfNeeded()
+    }
 }
 
 // - MARK: UICollectionViewDelegate

Sources/RESegmentedControl/Classes/SegmentedControl+API.swift

@@ -50,7 +50,7 @@ extension RESegmentedControl {
     }
 
     /// Clears images cache, that was downloaded from a remote server
-    public func clearCache() {
+    public static func clearCache() {
         let fileManager = FileManager()
         fileManager.removeImagesDirectory()
     }