Support redo in graffiti and mosaic tools.

Author: longitachi

Example/Example/ViewController.swift

@@ -225,6 +225,7 @@ class ViewController: UIViewController {
             .fontChooserContainerView(FontChooserContainerView())
             // Custom filter
 //            .filters = [.normal]
+            .canRedo(true)
     }
 
     @objc func pickImage() {

Sources/Extensions/UIView+ZLImageEditor.swift

@@ -0,0 +1,53 @@
+//
+//  UIView+ZLImageEditor.swift
+//  ZLImageEditor
+//
+//  Created by long on 2022/8/30.
+//
+//  Copyright (c) 2020 Long Zhang <495181165@qq.com>
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import UIKit
+
+extension ZLImageEditorWrapper where Base: UIView {
+    var top: CGFloat {
+        base.frame.minY
+    }
+    
+    var bottom: CGFloat {
+        base.frame.maxY
+    }
+    
+    var left: CGFloat {
+        base.frame.minX
+    }
+    
+    var right: CGFloat {
+        base.frame.maxX
+    }
+    
+    var width: CGFloat {
+        base.frame.width
+    }
+    
+    var height: CGFloat {
+        base.frame.height
+    }
+}