├── KColorPicker.xcodeproj
    ├── project.pbxproj
    └── project.xcworkspace
    │   └── contents.xcworkspacedata
├── LICENSE.txt
├── README.md
└── UndoDrawing
    ├── AppDelegate.h
    ├── AppDelegate.m
    ├── Base.lproj
        ├── LaunchScreen.xib
        └── Main.storyboard
    ├── DKVerticalColorPicker.h
    ├── DKVerticalColorPicker.m
    ├── ImageVC.h
    ├── ImageVC.m
    ├── Images.xcassets
        └── AppIcon.appiconset
        │   └── Contents.json
    ├── Info.plist
    ├── ViewController.h
    ├── ViewController.m
    ├── background.png
    └── main.m


/KColorPicker.xcodeproj/project.pbxproj:
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353 | 


--------------------------------------------------------------------------------
/KColorPicker.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <Workspace
3 |    version = "1.0">
4 |    <FileRef
5 |       location = "self:/Users/latika/Desktop/KRISHNA/KIPLDemo/UndoDrawing/KColorPicker.xcodeproj">
6 |    </FileRef>
7 | </Workspace>
8 | 


--------------------------------------------------------------------------------
/LICENSE.txt:
--------------------------------------------------------------------------------
  1 |                                  Apache License
  2 |                            Version 2.0, January 2004
  3 |                         http://www.apache.org/licenses/
  4 | 
  5 |    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
  6 | 
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  8 | 
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 10 |       and distribution as defined by Sections 1 through 9 of this document.
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 13 |       the copyright owner that is granting the License.
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 15 |       "Legal Entity" shall mean the union of the acting entity and all
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 21 |       outstanding shares, or (iii) beneficial ownership of such entity.
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 23 |       "You" (or "Your") shall mean an individual or Legal Entity
 24 |       exercising permissions granted by this License.
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 27 |       including but not limited to software source code, documentation
 28 |       source, and configuration files.
 29 | 
 30 |       "Object" form shall mean any form resulting from mechanical
 31 |       transformation or translation of a Source form, including but
 32 |       not limited to compiled object code, generated documentation,
 33 |       and conversions to other media types.
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 35 |       "Work" shall mean the work of authorship, whether in Source or
 36 |       Object form, made available under the License, as indicated by a
 37 |       copyright notice that is included in or attached to the work
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 41 |       form, that is based on (or derived from) the Work and for which the
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 44 |       of this License, Derivative Works shall not include works that remain
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # KColorPicker
 2 | A beautiful Color Picker and Text Drawing like Facebook App on Image with UNDO, REDO and RESET options and generate Edited Image as output. 
 3 | 
 4 | 
 5 | NOTE: This Control uses following controls - 
 6 | https://github.com/davecom/DKVerticalColorPicker
 7 | 
 8 | 
 9 | ![simulator screen shot may 11 2017 12 16 00 pm](https://cloud.githubusercontent.com/assets/16478904/25936479/8aeab37c-3645-11e7-8dfd-acd2faacc114.png)
10 | ![simulator screen shot may 11 2017 12 15 34 pm](https://cloud.githubusercontent.com/assets/16478904/25936493/952933fe-3645-11e7-879d-716da17e86ae.png)
11 | ![simulator screen shot may 11 2017 12 16 06 pm](https://cloud.githubusercontent.com/assets/16478904/25936498/9a0098f4-3645-11e7-8d9d-05edc29c37eb.png)
12 | 


--------------------------------------------------------------------------------
/UndoDrawing/AppDelegate.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.h
 3 | //  UndoDrawing
 4 | //
 5 | //  Created by min on 11/18/14.
 6 | //  Copyright (c) 2014 codeall. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface AppDelegate : UIResponder <UIApplicationDelegate>
12 | 
13 | @property (strong, nonatomic) UIWindow *window;
14 | 
15 | 
16 | @end
17 | 
18 | 


--------------------------------------------------------------------------------
/UndoDrawing/AppDelegate.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.m
 3 | //  UndoDrawing
 4 | //
 5 | //  Created by min on 11/18/14.
 6 | //  Copyright (c) 2014 codeall. All rights reserved.
 7 | //
 8 | 
 9 | #import "AppDelegate.h"
10 | 
11 | @interface AppDelegate ()
12 | 
13 | @end
14 | 
15 | @implementation AppDelegate
16 | 
17 | 
18 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
19 |     // Override point for customization after application launch.
20 |     return YES;
21 | }
22 | 
23 | - (void)applicationWillResignActive:(UIApplication *)application {
24 |     // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
25 |     // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
26 | }
27 | 
28 | - (void)applicationDidEnterBackground:(UIApplication *)application {
29 |     // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
30 |     // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
31 | }
32 | 
33 | - (void)applicationWillEnterForeground:(UIApplication *)application {
34 |     // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
35 | }
36 | 
37 | - (void)applicationDidBecomeActive:(UIApplication *)application {
38 |     // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
39 | }
40 | 
41 | - (void)applicationWillTerminate:(UIApplication *)application {
42 |     // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
43 | }
44 | 
45 | @end
46 | 


--------------------------------------------------------------------------------
/UndoDrawing/Base.lproj/LaunchScreen.xib:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="12120" systemVersion="16E195" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES">
 3 |     <device id="retina4_7" orientation="portrait">
 4 |         <adaptation id="fullscreen"/>
 5 |     </device>
 6 |     <dependencies>
 7 |         <deployment identifier="iOS"/>
 8 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12088"/>
 9 |         <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
10 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
11 |     </dependencies>
12 |     <objects>
13 |         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
14 |         <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
15 |         <view contentMode="scaleToFill" id="iN0-l3-epB">
16 |             <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
17 |             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
18 |             <subviews>
19 |                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="KColorPicker" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="kId-c2-rCX">
20 |                     <rect key="frame" x="20" y="140" width="441" height="43"/>
21 |                     <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
22 |                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
23 |                     <nil key="highlightedColor"/>
24 |                 </label>
25 |             </subviews>
26 |             <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
27 |             <constraints>
28 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="centerY" secondItem="iN0-l3-epB" secondAttribute="bottom" multiplier="1/3" constant="1" id="5cJ-9S-tgC"/>
29 |                 <constraint firstAttribute="centerX" secondItem="kId-c2-rCX" secondAttribute="centerX" id="Koa-jz-hwk"/>
30 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="fvb-Df-36g"/>
31 |             </constraints>
32 |             <nil key="simulatedStatusBarMetrics"/>
33 |             <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
34 |             <point key="canvasLocation" x="-18" y="81"/>
35 |         </view>
36 |     </objects>
37 | </document>
38 | 


--------------------------------------------------------------------------------
/UndoDrawing/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12120" systemVersion="16E195" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="lic-bk-pWj">
  3 |     <device id="retina4_0" orientation="portrait">
  4 |         <adaptation id="fullscreen"/>
  5 |     </device>
  6 |     <dependencies>
  7 |         <deployment identifier="iOS"/>
  8 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12088"/>
  9 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
 10 |     </dependencies>
 11 |     <scenes>
 12 |         <!--Delegate-->
 13 |         <scene sceneID="tne-QT-ifu">
 14 |             <objects>
 15 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
 16 |                     <layoutGuides>
 17 |                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
 18 |                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
 19 |                     </layoutGuides>
 20 |                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
 21 |                         <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
 22 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
 23 |                         <subviews>
 24 |                             <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="KQb-Xd-57t" userLabel="MainImage">
 25 |                                 <rect key="frame" x="0.0" y="50" width="300" height="468"/>
 26 |                             </imageView>
 27 |                             <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="background.png" translatesAutoresizingMaskIntoConstraints="NO" id="3x0-uM-9Lx" userLabel="TempImage">
 28 |                                 <rect key="frame" x="0.0" y="50" width="300" height="468"/>
 29 |                             </imageView>
 30 |                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="jTr-nL-zhk">
 31 |                                 <rect key="frame" x="0.0" y="532" width="51" height="36"/>
 32 |                                 <color key="backgroundColor" red="0.25882352941176467" green="0.077935112847222224" blue="0.34065755205555553" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 33 |                                 <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="20"/>
 34 |                                 <state key="normal" title="Undo">
 35 |                                     <color key="titleColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
 36 |                                     <color key="titleShadowColor" red="0.5" green="0.5" blue="0.5" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 37 |                                 </state>
 38 |                                 <connections>
 39 |                                     <action selector="btnClicked:" destination="BYZ-38-t0r" eventType="touchUpInside" id="AqL-UJ-qhd"/>
 40 |                                 </connections>
 41 |                             </button>
 42 |                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="He6-JI-Hqk" customClass="DKVerticalColorPicker">
 43 |                                 <rect key="frame" x="300" y="50" width="20" height="468"/>
 44 |                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
 45 |                                 <constraints>
 46 |                                     <constraint firstAttribute="width" constant="20" id="fmt-4i-mqA"/>
 47 |                                 </constraints>
 48 |                                 <connections>
 49 |                                     <outlet property="delegate" destination="BYZ-38-t0r" id="hvv-il-98C"/>
 50 |                                 </connections>
 51 |                             </view>
 52 |                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="bJI-e7-JLH">
 53 |                                 <rect key="frame" x="197" y="532" width="62" height="36"/>
 54 |                                 <color key="backgroundColor" red="0.25882352941176467" green="0.077935112847222224" blue="0.34065755205555553" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 55 |                                 <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="20"/>
 56 |                                 <state key="normal" title="RESET">
 57 |                                     <color key="titleColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
 58 |                                 </state>
 59 |                                 <connections>
 60 |                                     <action selector="resetAction:" destination="BYZ-38-t0r" eventType="touchUpInside" id="aLx-Cs-bmA"/>
 61 |                                 </connections>
 62 |                             </button>
 63 |                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Nw1-Pw-AgU">
 64 |                                 <rect key="frame" x="269" y="532" width="51" height="36"/>
 65 |                                 <color key="backgroundColor" red="0.25882352941176467" green="0.077935112847222224" blue="0.34065755205555553" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 66 |                                 <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="20"/>
 67 |                                 <state key="normal" title="SAVE">
 68 |                                     <color key="titleColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
 69 |                                 </state>
 70 |                                 <connections>
 71 |                                     <action selector="saveAction:" destination="BYZ-38-t0r" eventType="touchUpInside" id="UqH-qI-TTy"/>
 72 |                                 </connections>
 73 |                             </button>
 74 |                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="W8P-QY-COU">
 75 |                                 <rect key="frame" x="59" y="532" width="49" height="36"/>
 76 |                                 <color key="backgroundColor" red="0.25882352941176467" green="0.077935112847222224" blue="0.34065755205555553" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 77 |                                 <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="20"/>
 78 |                                 <state key="normal" title="Redo">
 79 |                                     <color key="titleColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
 80 |                                     <color key="titleShadowColor" red="0.5" green="0.5" blue="0.5" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 81 |                                 </state>
 82 |                                 <connections>
 83 |                                     <action selector="redoBtnClicked:" destination="BYZ-38-t0r" eventType="touchUpInside" id="26L-oQ-t1a"/>
 84 |                                 </connections>
 85 |                             </button>
 86 |                         </subviews>
 87 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 88 |                         <constraints>
 89 |                             <constraint firstItem="3x0-uM-9Lx" firstAttribute="centerY" secondItem="KQb-Xd-57t" secondAttribute="centerY" id="0X0-CE-9f3"/>
 90 |                             <constraint firstAttribute="trailing" secondItem="Nw1-Pw-AgU" secondAttribute="trailing" id="2c7-9X-5P0"/>
 91 |                             <constraint firstItem="Nw1-Pw-AgU" firstAttribute="leading" secondItem="bJI-e7-JLH" secondAttribute="trailing" constant="10" id="6Zb-m0-vLD"/>
 92 |                             <constraint firstItem="wfy-db-euE" firstAttribute="top" secondItem="Nw1-Pw-AgU" secondAttribute="bottom" id="ATa-W3-aQq"/>
 93 |                             <constraint firstItem="wfy-db-euE" firstAttribute="top" secondItem="jTr-nL-zhk" secondAttribute="bottom" id="ByY-SB-MCL"/>
 94 |                             <constraint firstItem="3x0-uM-9Lx" firstAttribute="leading" secondItem="KQb-Xd-57t" secondAttribute="leading" id="EVX-Sg-VBV"/>
 95 |                             <constraint firstAttribute="trailing" secondItem="He6-JI-Hqk" secondAttribute="trailing" id="EZX-yn-YIy"/>
 96 |                             <constraint firstItem="KQb-Xd-57t" firstAttribute="leading" secondItem="8bC-Xf-vdC" secondAttribute="leading" id="GEf-pe-Gkf"/>
 97 |                             <constraint firstAttribute="bottom" secondItem="He6-JI-Hqk" secondAttribute="bottom" constant="50" id="GsF-tR-cY3"/>
 98 |                             <constraint firstItem="He6-JI-Hqk" firstAttribute="top" secondItem="8bC-Xf-vdC" secondAttribute="top" constant="50" id="HkD-EO-fhF"/>
 99 |                             <constraint firstItem="wfy-db-euE" firstAttribute="top" secondItem="bJI-e7-JLH" secondAttribute="bottom" id="NCn-TV-r0I"/>
100 |                             <constraint firstItem="KQb-Xd-57t" firstAttribute="top" secondItem="8bC-Xf-vdC" secondAttribute="top" constant="50" id="RXx-qv-RMJ"/>
101 |                             <constraint firstItem="3x0-uM-9Lx" firstAttribute="centerX" secondItem="KQb-Xd-57t" secondAttribute="centerX" id="UG1-bQ-LvB"/>
102 |                             <constraint firstItem="wfy-db-euE" firstAttribute="top" secondItem="W8P-QY-COU" secondAttribute="bottom" id="bju-5o-HKP"/>
103 |                             <constraint firstItem="3x0-uM-9Lx" firstAttribute="top" secondItem="KQb-Xd-57t" secondAttribute="top" id="d4o-rF-E9r"/>
104 |                             <constraint firstAttribute="bottom" secondItem="KQb-Xd-57t" secondAttribute="bottom" constant="50" id="dRH-bz-Xms"/>
105 |                             <constraint firstItem="jTr-nL-zhk" firstAttribute="leading" secondItem="8bC-Xf-vdC" secondAttribute="leading" id="eQZ-Ht-Vxa"/>
106 |                             <constraint firstAttribute="trailing" secondItem="KQb-Xd-57t" secondAttribute="trailing" constant="20" id="rhx-Wd-MSe"/>
107 |                             <constraint firstItem="W8P-QY-COU" firstAttribute="leading" secondItem="jTr-nL-zhk" secondAttribute="trailing" constant="8" id="uwU-a7-VTK"/>
108 |                         </constraints>
109 |                     </view>
110 |                     <navigationItem key="navigationItem" id="Sz5-ZA-7Y1"/>
111 |                     <connections>
112 |                         <outlet property="mainImage" destination="KQb-Xd-57t" id="6UL-VD-WSp"/>
113 |                         <outlet property="tempImage" destination="3x0-uM-9Lx" id="dJz-WF-VtN"/>
114 |                         <segue destination="GJU-EP-iTk" kind="show" identifier="NAVIGATE_TO_IMAGE" id="so8-Jk-dVr"/>
115 |                     </connections>
116 |                 </viewController>
117 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
118 |             </objects>
119 |             <point key="canvasLocation" x="1316.25" y="278.87323943661971"/>
120 |         </scene>
121 |         <!--ImageVC-->
122 |         <scene sceneID="V9X-af-Z89">
123 |             <objects>
124 |                 <viewController id="GJU-EP-iTk" customClass="ImageVC" sceneMemberID="viewController">
125 |                     <layoutGuides>
126 |                         <viewControllerLayoutGuide type="top" id="W22-9m-Mtq"/>
127 |                         <viewControllerLayoutGuide type="bottom" id="eQd-RJ-cT4"/>
128 |                     </layoutGuides>
129 |                     <view key="view" contentMode="scaleToFill" id="4Gs-O1-clP">
130 |                         <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
131 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
132 |                         <subviews>
133 |                             <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="lHK-7M-G5W">
134 |                                 <rect key="frame" x="0.0" y="64" width="320" height="504"/>
135 |                             </imageView>
136 |                         </subviews>
137 |                         <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
138 |                         <constraints>
139 |                             <constraint firstItem="lHK-7M-G5W" firstAttribute="leading" secondItem="4Gs-O1-clP" secondAttribute="leading" id="AiI-eu-rz9"/>
140 |                             <constraint firstItem="lHK-7M-G5W" firstAttribute="top" secondItem="4Gs-O1-clP" secondAttribute="top" constant="64" id="CYc-zX-Sze"/>
141 |                             <constraint firstAttribute="trailing" secondItem="lHK-7M-G5W" secondAttribute="trailing" id="kCi-kK-eHf"/>
142 |                             <constraint firstItem="eQd-RJ-cT4" firstAttribute="top" secondItem="lHK-7M-G5W" secondAttribute="bottom" id="zUL-on-Bd5"/>
143 |                         </constraints>
144 |                     </view>
145 |                     <connections>
146 |                         <outlet property="imageView" destination="lHK-7M-G5W" id="zrB-qy-zpO"/>
147 |                     </connections>
148 |                 </viewController>
149 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="d7i-Ft-Wbe" userLabel="First Responder" sceneMemberID="firstResponder"/>
150 |             </objects>
151 |             <point key="canvasLocation" x="2059" y="278"/>
152 |         </scene>
153 |         <!--Navigation Controller-->
154 |         <scene sceneID="V7N-Pz-aJs">
155 |             <objects>
156 |                 <navigationController automaticallyAdjustsScrollViewInsets="NO" id="lic-bk-pWj" sceneMemberID="viewController">
157 |                     <toolbarItems/>
158 |                     <navigationBar key="navigationBar" contentMode="scaleToFill" id="rQr-fQ-hL0">
159 |                         <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
160 |                         <autoresizingMask key="autoresizingMask"/>
161 |                     </navigationBar>
162 |                     <nil name="viewControllers"/>
163 |                     <connections>
164 |                         <segue destination="BYZ-38-t0r" kind="relationship" relationship="rootViewController" id="gk6-zJ-2zo"/>
165 |                     </connections>
166 |                 </navigationController>
167 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="T8l-im-iEn" userLabel="First Responder" sceneMemberID="firstResponder"/>
168 |             </objects>
169 |             <point key="canvasLocation" x="600" y="295"/>
170 |         </scene>
171 |     </scenes>
172 |     <resources>
173 |         <image name="background.png" width="320" height="480"/>
174 |     </resources>
175 | </document>
176 | 


--------------------------------------------------------------------------------
/UndoDrawing/DKVerticalColorPicker.h:
--------------------------------------------------------------------------------
 1 | //  DKVerticalColorPicker.h
 2 | 
 3 | /*
 4 | DKVerticalColorPicker
 5 | Copyright (c) 2015 David Kopec
 6 | 
 7 | Permission is hereby granted, free of charge, to any person obtaining a copy
 8 | of this software and associated documentation files (the "Software"), to deal
 9 | in the Software without restriction, including without limitation the rights
10 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 | copies of the Software, and to permit persons to whom the Software is
12 | furnished to do so, subject to the following conditions:
13 | 
14 | The above copyright notice and this permission notice shall be included in all
15 | copies or substantial portions of the Software.
16 | 
17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 | SOFTWARE.
24 | */
25 |  
26 | #import <UIKit/UIKit.h>
27 | 
28 | /*!
29 |  A delegate that gets notifications when the color picked changes.
30 |  */
31 | @protocol DKVerticalColorPickerDelegate <NSObject>
32 | @optional
33 | -(void)colorPicked:(UIColor *)color withXAxis:(float)x andYAxis:(float)y;
34 | -(void)startedDraging;
35 | -(void)endDraging;
36 | 
37 | @end
38 | 
39 | IB_DESIGNABLE
40 | 
41 | @interface DKVerticalColorPicker : UIView
42 | 
43 | @property (nonatomic, weak) IBOutlet id<DKVerticalColorPickerDelegate> delegate;  //set after inited
44 | @property (nonatomic) IBInspectable UIColor *selectedColor;  //setting this will update the UI & notify the delegate
45 | 
46 | @end
47 | 


--------------------------------------------------------------------------------
/UndoDrawing/DKVerticalColorPicker.m:
--------------------------------------------------------------------------------
  1 | //  DKVerticalColorPicker.m
  2 | 
  3 | /*
  4 |  DKVerticalColorPicker
  5 |  Copyright (c) 2015 David Kopec
  6 |  
  7 |  Permission is hereby granted, free of charge, to any person obtaining a copy
  8 |  of this software and associated documentation files (the "Software"), to deal
  9 |  in the Software without restriction, including without limitation the rights
 10 |  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 11 |  copies of the Software, and to permit persons to whom the Software is
 12 |  furnished to do so, subject to the following conditions:
 13 |  
 14 |  The above copyright notice and this permission notice shall be included in all
 15 |  copies or substantial portions of the Software.
 16 |  
 17 |  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 18 |  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 19 |  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 20 |  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 21 |  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 22 |  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 23 |  SOFTWARE.
 24 |  */
 25 | 
 26 | #import "DKVerticalColorPicker.h"
 27 | 
 28 | @interface DKVerticalColorPicker ()
 29 | 
 30 | @property (nonatomic) CGFloat currentSelectionY;
 31 | @property (nonatomic) CGFloat currentSelectionX;
 32 | 
 33 | @end
 34 | 
 35 | @implementation DKVerticalColorPicker
 36 | 
 37 | - (instancetype)initWithFrame:(CGRect)frame
 38 | {
 39 |     self = [super initWithFrame:frame];
 40 |     if (self) {
 41 |         self.currentSelectionY = 0.0;
 42 |         self.backgroundColor = [UIColor clearColor];
 43 |     }
 44 |     return self;
 45 | }
 46 | 
 47 | // for when coming out of a nib
 48 | - (instancetype)initWithCoder:(NSCoder *)coder
 49 | {
 50 |     self = [super initWithCoder:coder];
 51 |     if (self) {
 52 |         self.currentSelectionY = 0.0;
 53 |         self.backgroundColor = [UIColor clearColor];
 54 |     }
 55 |     return self;
 56 | }
 57 | 
 58 | - (void)drawRect:(CGRect)rect {
 59 |     // Drawing code
 60 |     [super drawRect:rect];
 61 |     
 62 |     //draw wings
 63 |     [[UIColor blackColor] set];
 64 |     CGFloat tempYPlace = self.currentSelectionY;
 65 |     if (tempYPlace < 0.0) {
 66 |         tempYPlace = 0.0;
 67 |     } else if (tempYPlace >= self.frame.size.height) {
 68 |         tempYPlace = self.frame.size.height - 1.0;
 69 |     }
 70 |     CGRect temp = CGRectMake(0.0, tempYPlace, self.frame.size.width, 1.0);
 71 |     UIRectFill(temp);
 72 |     
 73 |     //draw central bar over it
 74 |     CGFloat cbxbegin = self.frame.size.width * 0.2;
 75 |     CGFloat cbwidth = self.frame.size.width * 0.6;
 76 |     for (int y = 0; y < self.frame.size.height; y++) {
 77 |         [[UIColor colorWithHue:(y/self.frame.size.height) saturation:1.0 brightness:1.0 alpha:1.0] set];
 78 |         CGRect temp = CGRectMake(cbxbegin, y, cbwidth, 1.0);
 79 |         UIRectFill(temp);
 80 |     }
 81 | }
 82 | 
 83 | /*!
 84 |  Changes the selected color, updates the UI, and notifies the delegate.
 85 |  */
 86 | - (void)setSelectedColor:(UIColor *)selectedColor
 87 | {
 88 |     if (selectedColor != _selectedColor)
 89 |     {
 90 |         CGFloat hue = 0.0, temp = 0.0;
 91 |         if ([selectedColor getHue:&hue saturation:&temp brightness:&temp alpha:&temp])
 92 |         {
 93 |             self.currentSelectionY = floorf(hue * self.frame.size.height);
 94 |             [self setNeedsDisplay];
 95 |         }
 96 |         _selectedColor = selectedColor;
 97 |         if([self.delegate respondsToSelector:@selector(colorPicked:withXAxis:andYAxis:)])
 98 |         {
 99 |             [self.delegate colorPicked:self.selectedColor withXAxis:self.currentSelectionX andYAxis:self.currentSelectionY];
100 |         }
101 |     }
102 | }
103 | 
104 | #pragma mark - Touch Events
105 | 
106 | - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
107 | {
108 |     //update color
109 |     self.currentSelectionY = [((UITouch *)[touches anyObject]) locationInView:self].y;
110 |     self.currentSelectionX = [((UITouch *)[touches anyObject]) locationInView:self].x;
111 |    // NSLog(@"x axis on touch began-> %f", self.currentSelectionX);
112 |     _selectedColor = [UIColor colorWithHue:(self.currentSelectionY / self.frame.size.height) saturation:1.0 brightness:1.0 alpha:1.0];
113 |     //notify delegate
114 |     if([self.delegate respondsToSelector:@selector(colorPicked:withXAxis:andYAxis:)])
115 |     {
116 |         [self.delegate colorPicked:self.selectedColor withXAxis:self.currentSelectionX andYAxis:self.currentSelectionY];
117 |     }
118 | 
119 |     [self setNeedsDisplay];
120 |     if([self.delegate respondsToSelector:@selector(startedDraging)])
121 |     {
122 |         [self.delegate startedDraging];
123 |     }
124 | }
125 | - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
126 | {
127 |     //update color
128 |     self.currentSelectionY = [((UITouch *)[touches anyObject]) locationInView:self].y;
129 |     self.currentSelectionX = [((UITouch *)[touches anyObject]) locationInView:self].x;
130 |    // NSLog(@"x axis on touch began-> %f", self.currentSelectionX);
131 | 
132 |     _selectedColor = [UIColor colorWithHue:(self.currentSelectionY / self.frame.size.height) saturation:1.0 brightness:1.0 alpha:1.0];
133 |     //notify delegate
134 |     if([self.delegate respondsToSelector:@selector(colorPicked:withXAxis:andYAxis:)])
135 |     {
136 |         [self.delegate colorPicked:self.selectedColor withXAxis:self.currentSelectionX andYAxis:self.currentSelectionY];
137 |     }
138 | 
139 |     [self setNeedsDisplay];
140 | }
141 | 
142 | - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
143 | {
144 |     //update color
145 |     self.currentSelectionY = [((UITouch *)[touches anyObject]) locationInView:self].y;
146 |     self.currentSelectionX = [((UITouch *)[touches anyObject]) locationInView:self].x;
147 |     //NSLog(@"x axis on touch began-> %f", self.currentSelectionX);
148 |     _selectedColor = [UIColor colorWithHue:(self.currentSelectionY / self.frame.size.height) saturation:1.0 brightness:1.0 alpha:1.0];
149 |     //notify delegate
150 |     if([self.delegate respondsToSelector:@selector(colorPicked:withXAxis:andYAxis:)])
151 |     {
152 |         [self.delegate colorPicked:self.selectedColor withXAxis:self.currentSelectionX andYAxis:self.currentSelectionY];
153 |     }
154 |     if([self.delegate respondsToSelector:@selector(endDraging)])
155 |     {
156 |         [self.delegate endDraging];
157 |     }
158 |     [self setNeedsDisplay];
159 | }
160 | 
161 | - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
162 | {
163 |     
164 | }
165 | @end
166 | 


--------------------------------------------------------------------------------
/UndoDrawing/ImageVC.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ImageVC.h
 3 | //  UndoDrawing
 4 | //
 5 | //  Created by Krishana on 1/19/17.
 6 | //  Copyright © 2017 codeall. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface ImageVC : UIViewController
12 | 
13 | @property (weak, nonatomic)  UIImage *image;
14 | 
15 | @end
16 | 


--------------------------------------------------------------------------------
/UndoDrawing/ImageVC.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ImageVC.m
 3 | //  UndoDrawing
 4 | //
 5 | //  Created by Krishana on 1/19/17.
 6 | //  Copyright © 2017 codeall. All rights reserved.
 7 | //
 8 | 
 9 | #import "ImageVC.h"
10 | 
11 | @interface ImageVC ()
12 | 
13 | @property (weak, nonatomic) IBOutlet UIImageView *imageView;
14 | 
15 | @end
16 | 
17 | @implementation ImageVC
18 | 
19 | - (void)viewDidLoad {
20 |     [super viewDidLoad];
21 |     // Do any additional setup after loading the view.
22 |     
23 |     self.imageView.image = self.image;
24 | }
25 | 
26 | - (void)viewWillAppear:(BOOL)animated {
27 |     [self.navigationController setNavigationBarHidden:NO];
28 | }
29 | 
30 | - (void)didReceiveMemoryWarning {
31 |     [super didReceiveMemoryWarning];
32 |     // Dispose of any resources that can be recreated.
33 | }
34 | 
35 | /*
36 | #pragma mark - Navigation
37 | 
38 | // In a storyboard-based application, you will often want to do a little preparation before navigation
39 | - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
40 |     // Get the new view controller using [segue destinationViewController].
41 |     // Pass the selected object to the new view controller.
42 | }
43 | */
44 | 
45 | @end
46 | 


--------------------------------------------------------------------------------
/UndoDrawing/Images.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "29x29",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "29x29",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "40x40",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "40x40",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "60x60",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "60x60",
31 |       "scale" : "3x"
32 |     },
33 |     {
34 |       "idiom" : "ipad",
35 |       "size" : "29x29",
36 |       "scale" : "1x"
37 |     },
38 |     {
39 |       "idiom" : "ipad",
40 |       "size" : "29x29",
41 |       "scale" : "2x"
42 |     },
43 |     {
44 |       "idiom" : "ipad",
45 |       "size" : "40x40",
46 |       "scale" : "1x"
47 |     },
48 |     {
49 |       "idiom" : "ipad",
50 |       "size" : "40x40",
51 |       "scale" : "2x"
52 |     },
53 |     {
54 |       "idiom" : "ipad",
55 |       "size" : "76x76",
56 |       "scale" : "1x"
57 |     },
58 |     {
59 |       "idiom" : "ipad",
60 |       "size" : "76x76",
61 |       "scale" : "2x"
62 |     }
63 |   ],
64 |   "info" : {
65 |     "version" : 1,
66 |     "author" : "xcode"
67 |   }
68 | }


--------------------------------------------------------------------------------
/UndoDrawing/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleSignature</key>
20 | 	<string>????</string>
21 | 	<key>CFBundleVersion</key>
22 | 	<string>1</string>
23 | 	<key>LSRequiresIPhoneOS</key>
24 | 	<true/>
25 | 	<key>UILaunchStoryboardName</key>
26 | 	<string>LaunchScreen</string>
27 | 	<key>UIMainStoryboardFile</key>
28 | 	<string>Main</string>
29 | 	<key>UIRequiredDeviceCapabilities</key>
30 | 	<array>
31 | 		<string>armv7</string>
32 | 	</array>
33 | 	<key>UISupportedInterfaceOrientations</key>
34 | 	<array>
35 | 		<string>UIInterfaceOrientationPortrait</string>
36 | 	</array>
37 | 	<key>UISupportedInterfaceOrientations~ipad</key>
38 | 	<array>
39 | 		<string>UIInterfaceOrientationPortrait</string>
40 | 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
41 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
42 | 		<string>UIInterfaceOrientationLandscapeRight</string>
43 | 	</array>
44 | </dict>
45 | </plist>
46 | 


--------------------------------------------------------------------------------
/UndoDrawing/ViewController.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.h
 3 | //  UndoDrawing
 4 | //
 5 | //  Created by min on 11/18/14.
 6 | //  Copyright (c) 2014 codeall. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface ViewController : UIViewController
12 | 
13 | 
14 | @end
15 | 
16 | 


--------------------------------------------------------------------------------
/UndoDrawing/ViewController.m:
--------------------------------------------------------------------------------
  1 | //
  2 | //  ViewController.m
  3 | //  UndoDrawing
  4 | //
  5 | //  Created by min on 11/18/14.
  6 | //  Copyright (c) 2014 codeall. All rights reserved.
  7 | //
  8 | 
  9 | #import "ViewController.h"
 10 | #import "DKVerticalColorPicker.h"
 11 | #import "ImageVC.h"
 12 | 
 13 | 
 14 | @interface ViewController () <DKVerticalColorPickerDelegate>
 15 | {
 16 |     CGPoint lastPoint;
 17 |     CGFloat opacity;
 18 |     CGFloat brush;
 19 |     CGFloat red, green, blue;
 20 |     UIImage *previousImage;
 21 |     UIImage *rawImage;
 22 | }
 23 | 
 24 | @property (weak, nonatomic) IBOutlet UIImageView *tempImage;
 25 | @property (weak, nonatomic) IBOutlet UIImageView *mainImage;
 26 | @property (nonatomic, strong) NSMutableArray *stack;
 27 | @property (nonatomic, strong) NSMutableArray *contextArray;
 28 | 
 29 | @property (nonatomic, strong) NSMutableArray *pointsArray;
 30 | @property (strong, nonatomic) IBOutlet UIView *movingView;
 31 | @property (strong, nonatomic) IBOutlet UIView *movingWidthView;
 32 | @property (nonatomic, strong) UIColor *selectedColor;
 33 | 
 34 | @end
 35 | 
 36 | @implementation ViewController
 37 | 
 38 | - (void)viewDidLoad {
 39 |     [super viewDidLoad];
 40 |     brush = 4; opacity = 1.0; red = 0.5; green = blue =  0.4;
 41 | //    previousImage = self.tempImage.image;
 42 |     _stack = [NSMutableArray array];
 43 |     _contextArray = [NSMutableArray array];
 44 | 
 45 |     rawImage = [UIImage imageNamed:@"0.png"];
 46 |     previousImage = [UIImage imageNamed:@"0.png"];
 47 |     
 48 |     self.movingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
 49 |     self.movingWidthView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
 50 |     self.movingWidthView.center = self.movingView.center;
 51 |     self.movingWidthView.backgroundColor = self.selectedColor;
 52 |     [self.movingView addSubview:self.movingWidthView];
 53 |     self.movingView.layer.cornerRadius = 25;
 54 |     self.movingView.layer.borderWidth = 0;
 55 |     self.movingView.layer.borderColor = [UIColor whiteColor].CGColor;
 56 |     self.movingView.layer.masksToBounds = YES;
 57 |     
 58 |     self.movingWidthView.layer.cornerRadius = 20;
 59 |     self.movingWidthView.layer.borderWidth = 4;
 60 |     self.movingWidthView.layer.borderColor = [UIColor whiteColor].CGColor;
 61 |     self.movingWidthView.layer.masksToBounds = YES;
 62 |     
 63 |     self.movingView.backgroundColor = self.selectedColor;
 64 |     [self.movingView setHidden:YES];
 65 |     [self.view addSubview:self.movingView];
 66 |     self.selectedColor = [UIColor redColor];
 67 |     
 68 | }
 69 | 
 70 | - (void)viewWillAppear:(BOOL)animated {
 71 |     self.title = @"Image Edit";
 72 |     //[self.navigationController setNavigationBarHidden:YES];
 73 | }
 74 | 
 75 | - (void)didReceiveMemoryWarning {
 76 |     [super didReceiveMemoryWarning];
 77 | }
 78 | 
 79 | - (IBAction)btnClicked:(id)sender {
 80 |     if ([self.undoManager canUndo]) {
 81 |         [self.undoManager undo];
 82 |     }
 83 | }
 84 | 
 85 | - (IBAction)redoBtnClicked:(id)sender {
 86 |     if ([self.undoManager canRedo]) {
 87 |         [self.undoManager redo];
 88 |     }
 89 | }
 90 | 
 91 | - (IBAction)resetAction:(id)sender {
 92 |     [self setImage:previousImage fromImage:self.tempImage.image];
 93 | }
 94 | 
 95 | - (IBAction)saveAction:(id)sender {
 96 |     [self performSegueWithIdentifier:@"NAVIGATE_TO_IMAGE" sender:nil];
 97 | }
 98 | 
 99 | - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
100 | 
101 |     UITouch *touch = [touches anyObject];
102 |     lastPoint = [touch locationInView:self.view];
103 |     _pointsArray = [NSMutableArray array];
104 |     [_pointsArray addObject:NSStringFromCGPoint(lastPoint)];
105 |     
106 |     UIGraphicsBeginImageContext(self.view.frame.size);
107 |     CGContextRef context = UIGraphicsGetCurrentContext();
108 |     [self.tempImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
109 |     CGContextSetLineCap(context, kCGLineCapRound);
110 |     CGContextSetLineWidth(context, brush);
111 |     CGContextSetStrokeColorWithColor(UIGraphicsGetCurrentContext(), self.selectedColor.CGColor);
112 |     CGContextMoveToPoint(context, lastPoint.x, lastPoint.y);
113 |     CGContextAddLineToPoint(context, lastPoint.x, lastPoint.y);
114 |     CGContextStrokePath(context);
115 |     self.tempImage.image = UIGraphicsGetImageFromCurrentImageContext();
116 |     UIGraphicsEndImageContext();
117 | 
118 | }
119 | 
120 | - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
121 |     
122 |     UITouch *touch = [touches anyObject];
123 |     CGPoint currentPoint = [touch locationInView:self.view];
124 |     
125 |     UIGraphicsBeginImageContext(self.view.frame.size);
126 |     [self.tempImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
127 |     
128 |     CGContextRef context = UIGraphicsGetCurrentContext();
129 |     CGContextMoveToPoint(context, lastPoint.x, lastPoint.y);
130 |     CGContextAddLineToPoint(context, currentPoint.x, currentPoint.y);
131 |     
132 |     //Now set our brush size and opacity and brush stroke color:
133 |     CGContextSetLineCap(context, kCGLineCapRound);
134 |     CGContextSetLineWidth(context, brush );
135 |     CGContextSetStrokeColorWithColor(UIGraphicsGetCurrentContext(), self.selectedColor.CGColor);
136 |     CGContextSetBlendMode(context,kCGBlendModeNormal);
137 |     CGContextStrokePath(context);
138 |     
139 |     self.tempImage.image = UIGraphicsGetImageFromCurrentImageContext();
140 |     [self.tempImage setAlpha:opacity];
141 |     UIGraphicsEndImageContext();
142 |     
143 |     lastPoint = currentPoint;
144 |     [self.pointsArray addObject:NSStringFromCGPoint(lastPoint)];
145 |     
146 | }
147 | 
148 | - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
149 |     //handle single tap, make _pointsArray has two identical points, draw a line between them
150 |     if (_pointsArray.count == 1) {
151 |         [_pointsArray addObject:NSStringFromCGPoint(lastPoint)];
152 |     }
153 | 
154 |     [self.stack addObject:_pointsArray];
155 |     NSLog(@"color -> %@ \nwidth->%f", self.selectedColor.description, brush);
156 |     
157 |     NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
158 |     [dic setObject:self.selectedColor forKey:@"color"];
159 |     [dic setObject:[NSNumber numberWithFloat:brush] forKey:@"width"];
160 |     [self.contextArray addObject:dic];
161 |     
162 |     [self.undoManager registerUndoWithTarget: self
163 |                                     selector: @selector(popDrawing)
164 |                                       object: nil];
165 | 
166 | }
167 | 
168 | - (void)pushDrawing:(NSDictionary *)allDic
169 | {
170 |     
171 |     [self.stack addObject: (NSArray *)[allDic objectForKey:@"points"]];
172 |     [self.contextArray addObject:(NSDictionary *)[allDic objectForKey:@"context"]];
173 |     
174 |     [self redrawLastLine:(NSArray *)[allDic objectForKey:@"points"]];
175 | 
176 |     [self.undoManager registerUndoWithTarget: self
177 |                                     selector: @selector(popDrawing)
178 |                                       object: nil];
179 | }
180 | 
181 | - (void)popDrawing
182 | {
183 |     NSArray *array = [self.stack lastObject];
184 |     [self.stack removeLastObject];
185 |     NSDictionary *contextDic = [_contextArray lastObject];
186 |     
187 |     NSDictionary *allDic = @{
188 |                              @"points" : array,
189 |                              @"context" : contextDic
190 |                              };
191 |     [self.contextArray removeLastObject];
192 |     [self redrawLinePathsInStack];
193 |     [self.undoManager registerUndoWithTarget: self
194 |                                     selector: @selector(pushDrawing:)
195 |                                       object: allDic];
196 | }
197 | 
198 | - (void)redrawLastLine:(NSArray*)array
199 | {
200 |     UIGraphicsBeginImageContext(self.view.frame.size);
201 |     CGContextRef context = UIGraphicsGetCurrentContext();
202 |     [self.tempImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
203 |     CGContextSetLineCap(context, kCGLineCapRound);
204 |     CGContextSetBlendMode(context,kCGBlendModeNormal);
205 |     
206 |     for(int i = 0; i < array.count - 1; i++)
207 |     {
208 |         NSDictionary *contextDic = [self.contextArray lastObject];
209 |         float lineWidth = [[contextDic objectForKey:@"width"] floatValue];
210 |         UIColor *lineColor = (UIColor *)[contextDic objectForKey:@"color"] ;
211 |         CGContextSetLineWidth(context, lineWidth);
212 |         CGContextSetStrokeColorWithColor(UIGraphicsGetCurrentContext(), lineColor.CGColor);
213 | 
214 |         NSString *pointStr = [array objectAtIndex:i];
215 |         NSString *pointStr1 = [array objectAtIndex:i+1];
216 |         
217 |         CGPoint point = CGPointFromString(pointStr);
218 |         CGPoint point1 = CGPointFromString(pointStr1);
219 |         
220 |         CGContextMoveToPoint(context, point.x, point.y);
221 |         CGContextAddLineToPoint(context, point1.x, point1.y);
222 |         CGContextStrokePath(UIGraphicsGetCurrentContext());
223 |     }
224 | 
225 |     
226 |     self.tempImage.image = UIGraphicsGetImageFromCurrentImageContext();
227 |     [self.tempImage setAlpha:opacity];
228 |     UIGraphicsEndImageContext();
229 | }
230 | 
231 | - (void)redrawLinePathsInStack
232 | {
233 |     
234 |     UIGraphicsBeginImageContext(self.view.frame.size);
235 |     CGContextRef context = UIGraphicsGetCurrentContext();
236 |     [rawImage drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
237 |     CGContextSetLineCap(context, kCGLineCapRound);
238 | 
239 |     CGContextSetBlendMode(context,kCGBlendModeNormal);
240 |     
241 |     int count = 0;
242 |     for (NSArray *array in self.stack)
243 |     {
244 |         NSDictionary *contextDic = [self.contextArray objectAtIndex:count];
245 |         float lineWidth = [[contextDic objectForKey:@"width"] floatValue];
246 |         UIColor *lineColor = (UIColor *)[contextDic objectForKey:@"color"] ;
247 |         CGContextSetLineWidth(context, lineWidth);
248 |         CGContextSetStrokeColorWithColor(UIGraphicsGetCurrentContext(), lineColor.CGColor);
249 |         
250 |         for(int i = 0; i < array.count - 1; i++)
251 |         {
252 |             NSString *pointStr = [array objectAtIndex:i];
253 |             NSString *pointStr1 = [array objectAtIndex:i+1];
254 |             
255 |             CGPoint point = CGPointFromString(pointStr);
256 |             CGPoint point1 = CGPointFromString(pointStr1);
257 |             
258 |             CGContextMoveToPoint(context, point.x, point.y);
259 |             CGContextAddLineToPoint(context, point1.x, point1.y);
260 |             CGContextStrokePath(UIGraphicsGetCurrentContext());
261 |         }
262 |         count ++;
263 |     }
264 |     
265 |     self.tempImage.image = UIGraphicsGetImageFromCurrentImageContext();
266 |     [self.tempImage setAlpha:opacity];
267 |     UIGraphicsEndImageContext();
268 | }
269 | 
270 | - (void)setImage:(UIImage*)currentImage fromImage:(UIImage*)preImage
271 | {
272 |     // Prepare undo-redo
273 |     [[self.undoManager prepareWithInvocationTarget:self] setImage:preImage fromImage:currentImage];
274 |     //self.mainImage.image = currentImage;
275 |     self.tempImage.image = currentImage;
276 |     //prev = currentImage;
277 | }
278 | 
279 | 
280 | #pragma mark color picker delegate
281 | 
282 | - (void)colorPicked:(UIColor *)color withXAxis:(float)x andYAxis:(float)y {
283 |     if (self.movingView.isHidden) {
284 |         [self.movingView setHidden:NO];
285 |     }
286 |     
287 |     self.selectedColor = color;
288 |     //[self.drawerView setSelectedColor:color];
289 |     self.movingView.backgroundColor = color;
290 |     
291 |     //NSLog(@"touch distance ->%f", y);
292 |     if (x <= 0) {
293 |         float distanceFromPicker = (-1) * x;
294 |         //[self.drawerView setFontWidth:distanceFromPicker / 10];
295 |         float brushWidth = distanceFromPicker / 10;
296 |         if (brushWidth > 1) {
297 |             brush = distanceFromPicker / 10;
298 |         }
299 |         else {
300 |             brushWidth = 1;
301 |         }
302 |         self.movingView.center = CGPointMake(300 - distanceFromPicker, y);
303 |         self.movingWidthView.layer.borderWidth = 15 - (distanceFromPicker / 20);
304 |     }
305 | }
306 | 
307 | - (void)endDraging {
308 |     [self.movingView setHidden:YES];
309 | }
310 | 
311 | - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
312 |     ImageVC *imgVC = [segue destinationViewController];
313 |     imgVC.image = self.tempImage.image;
314 | }
315 | 
316 | @end
317 | 


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/UndoDrawing/background.png:
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https://raw.githubusercontent.com/krishnads/KColorPicker/43e2de41142705fb20be59ce036232232e042b4e/UndoDrawing/background.png


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/UndoDrawing/main.m:
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 1 | //
 2 | //  main.m
 3 | //  UndoDrawing
 4 | //
 5 | //  Created by min on 11/18/14.
 6 | //  Copyright (c) 2014 codeall. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | #import "AppDelegate.h"
11 | 
12 | int main(int argc, char * argv[]) {
13 |     @autoreleasepool {
14 |         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
15 |     }
16 | }
17 | 


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