├── .gitignore
├── ESSSquareProgressIndicator.xcodeproj
    ├── project.pbxproj
    └── project.xcworkspace
    │   └── contents.xcworkspacedata
├── ESSSquareProgressIndicator
    ├── AppDelegate.h
    ├── AppDelegate.m
    ├── Base.lproj
    │   ├── LaunchScreen.xib
    │   └── Main.storyboard
    ├── ESSSquareProgressIndicator.h
    ├── ESSSquareProgressIndicator.m
    ├── Images.xcassets
    │   └── AppIcon.appiconset
    │   │   └── Contents.json
    ├── Info.plist
    ├── ViewController.h
    ├── ViewController.m
    └── main.m
├── ESSSquareProgressIndicatorTests
    ├── ESSSquareProgressIndicatorTests.m
    └── Info.plist
└── README.md


/.gitignore:
--------------------------------------------------------------------------------
 1 | # Xcode
 2 | #
 3 | build/
 4 | *.pbxuser
 5 | !default.pbxuser
 6 | *.mode1v3
 7 | !default.mode1v3
 8 | *.mode2v3
 9 | !default.mode2v3
10 | *.perspectivev3
11 | !default.perspectivev3
12 | xcuserdata
13 | *.xccheckout
14 | *.moved-aside
15 | DerivedData
16 | *.hmap
17 | *.ipa
18 | *.xcuserstate
19 | 
20 | # CocoaPods
21 | #
22 | # We recommend against adding the Pods directory to your .gitignore. However
23 | # you should judge for yourself, the pros and cons are mentioned at:
24 | # http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
25 | #
26 | #Pods/
27 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator.xcodeproj/project.pbxproj:
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395 | 					"$(inherited)",
396 | 				);
397 | 				INFOPLIST_FILE = ESSSquareProgressIndicatorTests/Info.plist;
398 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
399 | 				PRODUCT_NAME = "$(TARGET_NAME)";
400 | 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/ESSSquareProgressIndicator.app/ESSSquareProgressIndicator";
401 | 			};
402 | 			name = Release;
403 | 		};
404 | /* End XCBuildConfiguration section */
405 | 
406 | /* Begin XCConfigurationList section */
407 | 		392C47211ACD28830053B770 /* Build configuration list for PBXProject "ESSSquareProgressIndicator" */ = {
408 | 			isa = XCConfigurationList;
409 | 			buildConfigurations = (
410 | 				392C47471ACD28830053B770 /* Debug */,
411 | 				392C47481ACD28830053B770 /* Release */,
412 | 			);
413 | 			defaultConfigurationIsVisible = 0;
414 | 			defaultConfigurationName = Release;
415 | 		};
416 | 		392C47491ACD28830053B770 /* Build configuration list for PBXNativeTarget "ESSSquareProgressIndicator" */ = {
417 | 			isa = XCConfigurationList;
418 | 			buildConfigurations = (
419 | 				392C474A1ACD28830053B770 /* Debug */,
420 | 				392C474B1ACD28830053B770 /* Release */,
421 | 			);
422 | 			defaultConfigurationIsVisible = 0;
423 | 		};
424 | 		392C474C1ACD28830053B770 /* Build configuration list for PBXNativeTarget "ESSSquareProgressIndicatorTests" */ = {
425 | 			isa = XCConfigurationList;
426 | 			buildConfigurations = (
427 | 				392C474D1ACD28830053B770 /* Debug */,
428 | 				392C474E1ACD28830053B770 /* Release */,
429 | 			);
430 | 			defaultConfigurationIsVisible = 0;
431 | 		};
432 | /* End XCConfigurationList section */
433 | 	};
434 | 	rootObject = 392C471E1ACD28830053B770 /* Project object */;
435 | }
436 | 


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


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/AppDelegate.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.h
 3 | //  ESSSquareProgressIndicator
 4 | //
 5 | //  Created by Matthias Gansrigler on 02.04.2015.
 6 | //  Copyright (c) 2015 Eternal Storms Software. 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 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/AppDelegate.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.m
 3 | //  ESSSquareProgressIndicator
 4 | //
 5 | //  Created by Matthias Gansrigler on 02.04.2015.
 6 | //  Copyright (c) 2015 Eternal Storms Software. 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 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/Base.lproj/LaunchScreen.xib:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6214" systemVersion="14A314h" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6207"/>
 5 |         <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
 6 |     </dependencies>
 7 |     <objects>
 8 |         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
 9 |         <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
10 |         <view contentMode="scaleToFill" id="iN0-l3-epB">
11 |             <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
12 |             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
13 |             <subviews>
14 |                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2015 Eternal Storms Software. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="8ie-xW-0ye">
15 |                     <rect key="frame" x="20" y="439" width="441" height="21"/>
16 |                     <fontDescription key="fontDescription" type="system" pointSize="17"/>
17 |                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
18 |                     <nil key="highlightedColor"/>
19 |                 </label>
20 |                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="ESSSquareProgressIndicator" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="kId-c2-rCX">
21 |                     <rect key="frame" x="20" y="140" width="441" height="43"/>
22 |                     <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
23 |                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
24 |                     <nil key="highlightedColor"/>
25 |                 </label>
26 |             </subviews>
27 |             <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
28 |             <constraints>
29 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="centerY" secondItem="iN0-l3-epB" secondAttribute="bottom" multiplier="1/3" constant="1" id="5cJ-9S-tgC"/>
30 |                 <constraint firstAttribute="centerX" secondItem="kId-c2-rCX" secondAttribute="centerX" id="Koa-jz-hwk"/>
31 |                 <constraint firstAttribute="bottom" secondItem="8ie-xW-0ye" secondAttribute="bottom" constant="20" id="Kzo-t9-V3l"/>
32 |                 <constraint firstItem="8ie-xW-0ye" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="MfP-vx-nX0"/>
33 |                 <constraint firstAttribute="centerX" secondItem="8ie-xW-0ye" secondAttribute="centerX" id="ZEH-qu-HZ9"/>
34 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="fvb-Df-36g"/>
35 |             </constraints>
36 |             <nil key="simulatedStatusBarMetrics"/>
37 |             <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
38 |             <point key="canvasLocation" x="548" y="455"/>
39 |         </view>
40 |     </objects>
41 | </document>
42 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6751" systemVersion="14C1514" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6736"/>
 5 |     </dependencies>
 6 |     <scenes>
 7 |         <!--View Controller-->
 8 |         <scene sceneID="tne-QT-ifu">
 9 |             <objects>
10 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
11 |                     <layoutGuides>
12 |                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
13 |                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
14 |                     </layoutGuides>
15 |                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
16 |                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
17 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
18 |                         <subviews>
19 |                             <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="rkD-sb-Piv" customClass="ESSSquareProgressIndicator">
20 |                                 <rect key="frame" x="16" y="28" width="50" height="50"/>
21 |                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
22 |                             </view>
23 |                         </subviews>
24 |                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
25 |                     </view>
26 |                 </viewController>
27 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
28 |             </objects>
29 |         </scene>
30 |     </scenes>
31 | </document>
32 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/ESSSquareProgressIndicator.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ESSSquareProgressIndicator.h
 3 | //
 4 | //  Created by Matthias Gansrigler on 14.10.2014.
 5 | //  Copyright (c) 2014 Eternal Storms Software. All rights reserved.
 6 | //
 7 | 
 8 | #import <Foundation/Foundation.h>
 9 | 
10 | #define isMac (!TARGET_OS_IPHONE && !TARGET_OS_EMBEDDED && !TARGET_IPHONE_SIMULATOR)
11 | #define isiOS ((TARGET_OS_IPHONE || TARGET_OS_EMBEDDED || TARGET_IPHONE_SIMULATOR))
12 | 
13 | #if (isiOS)
14 | 
15 | #import <UIKit/UIKit.h>
16 | 
17 | IB_DESIGNABLE @interface ESSSquareProgressIndicator : UIView
18 | 
19 | #else
20 | 
21 | #import <Cocoa/Cocoa.h>
22 | #import <Quartz/Quartz.h>
23 | 
24 | IB_DESIGNABLE @interface ESSSquareProgressIndicator : NSView
25 | 
26 | #endif
27 | 
28 | /*!
29 |  @class			ESSSquareProgressIndicator
30 |  
31 |  @abstract
32 |  An indeterminate progress indicator that animates in a square form.
33 |  
34 |  @discussion
35 |  Drop a UIView in your interface file and set its class to ESSSquareProgressIndicator. It will animate as long as it's a subview of a UIView or not hidden. The animation will stop when removed from the superview or when the view is hidden.
36 |  
37 |  The point of this class is that a CAShapeLayer can not animate beyond its 1.0 -strokeEnd value to make for a continuous animation. ESSSquareProgressIndicator hence uses two (2) CAShapeLayers to do its job.
38 |  
39 |  It was created in the process of developing the iOS game ReachZEN http://zen.gansrigler.com
40 |  */
41 | 
42 | /*!
43 |  @property		strokeColor
44 |  @abstract		The NSColor/UIColor the progress indicator should be drawn in.
45 |  */
46 | #if isiOS
47 | @property (strong) IBInspectable UIColor *strokeColor;
48 | #else
49 | @property (strong) IBInspectable NSColor *strokeColor;
50 | #endif
51 | 
52 | /*!
53 |  @property		strokeWidth
54 |  @abstract		The width of the progress indicator's line.
55 |  @discussion	Minimum value is 2.0.
56 |  */
57 | @property (assign) IBInspectable CGFloat strokeWidth;
58 | 
59 | @end


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/ESSSquareProgressIndicator.m:
--------------------------------------------------------------------------------
  1 | //
  2 | //  ESSSquareProgressIndicator.m
  3 | //
  4 | //  Created by Matthias Gansrigler on 14.10.2014.
  5 | //  Copyright (c) 2014 Eternal Storms Software. All rights reserved.
  6 | //
  7 | 
  8 | #import "ESSSquareProgressIndicator.h"
  9 | 
 10 | @interface ESSSquareProgressIndicator ()
 11 | 
 12 | /*!
 13 |  @property		shapeLayer
 14 |  @abstract		One of the shape layers used for animating the progress indicator.
 15 |  @discussion	Two shape layers are needed because -strokeEnd can not be animated beyond 1.0. With two layers, the illusion is created that the line moves endlessly around the rect.
 16 |  */
 17 | @property (strong) CAShapeLayer *shapeLayer;
 18 | 
 19 | /*!
 20 |  @property		shapeLayer2
 21 |  @abstract		One of the shape layers used for animating the progress indicator.
 22 |  @discussion	Two shape layers are needed because -strokeEnd can not be animated beyond 1.0. With two layers, the illusion is created that the line moves endlessly around the rect.
 23 |  */
 24 | @property (strong) CAShapeLayer *shapeLayer2;
 25 | 
 26 | /*!
 27 |  @property		shouldAnimate
 28 |  @abstract		Indicates whether animation should continue.
 29 |  @discussion	If set to NO, another round of animation is not started.
 30 |  */
 31 | @property (assign) BOOL shouldAnimate;
 32 | 
 33 | @end
 34 | 
 35 | @implementation ESSSquareProgressIndicator
 36 | #if !TARGET_INTERFACE_BUILDER
 37 | - (void)awakeFromNib
 38 | {
 39 | 	self.shouldAnimate = !(self.isHidden);
 40 | 	
 41 | 	if (self.strokeWidth <= 2.0)
 42 | 		self.strokeWidth = 2.0;
 43 | 	
 44 | 	CGFloat strokeWidthHalf = self.strokeWidth/2.0;
 45 | 	
 46 | 	//we do this instead of CGPathCreateWithRect() because if we did that, the direction would be counter-clockwise, but we want it clockwise.
 47 | #if (isiOS)
 48 | 	CGMutablePathRef pathRef = CGPathCreateMutable();
 49 | 	CGPathMoveToPoint(pathRef, nil, strokeWidthHalf, 0+strokeWidthHalf);
 50 | 	CGPathAddLineToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, 0+strokeWidthHalf);
 51 | 	CGPathMoveToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, 0+strokeWidthHalf);
 52 | 	CGPathAddLineToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 53 | 	CGPathMoveToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 54 | 	CGPathAddLineToPoint(pathRef, nil, strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 55 | 	CGPathMoveToPoint(pathRef, nil, strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 56 | 	CGPathAddLineToPoint(pathRef, nil, strokeWidthHalf, 0+strokeWidthHalf);
 57 | 	CGPathMoveToPoint(pathRef, nil, strokeWidthHalf, 0+strokeWidthHalf);
 58 | 	CGPathCloseSubpath(pathRef);
 59 | #elif (isMac)
 60 | 	CGMutablePathRef pathRef = CGPathCreateMutable();
 61 | 	CGPathMoveToPoint(pathRef, nil, strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 62 | 	CGPathAddLineToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 63 | 	CGPathMoveToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 64 | 	CGPathAddLineToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, strokeWidthHalf);
 65 | 	CGPathMoveToPoint(pathRef, nil, self.frame.size.width-strokeWidthHalf, strokeWidthHalf);
 66 | 	CGPathAddLineToPoint(pathRef, nil, strokeWidthHalf, strokeWidthHalf);
 67 | 	CGPathMoveToPoint(pathRef, nil, strokeWidthHalf, strokeWidthHalf);
 68 | 	CGPathAddLineToPoint(pathRef, nil, strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 69 | 	CGPathMoveToPoint(pathRef, nil, strokeWidthHalf, self.frame.size.height-strokeWidthHalf);
 70 | 	CGPathCloseSubpath(pathRef);
 71 | #endif
 72 | 	
 73 | 	self.shapeLayer = [CAShapeLayer layer];
 74 | 	self.shapeLayer2 = [CAShapeLayer layer];
 75 | 	
 76 | 	self.shapeLayer.path = pathRef;
 77 | 	self.shapeLayer.lineWidth = self.strokeWidth;
 78 | 	self.shapeLayer2.path = pathRef;
 79 | 	self.shapeLayer2.lineWidth = self.strokeWidth;
 80 | 	
 81 | 	self.shapeLayer.strokeStart = 0.0;
 82 | 	self.shapeLayer.strokeEnd = 0.125;
 83 | 	self.shapeLayer2.strokeStart = 0.75+0.125;
 84 | 	self.shapeLayer2.strokeEnd = 1.0;
 85 | 	
 86 | #if (isiOS)
 87 | 	self.backgroundColor = [UIColor clearColor];
 88 | 	
 89 | 	if (self.strokeColor == nil)
 90 | 		self.strokeColor = [UIColor blackColor];
 91 | 	
 92 | 	self.shapeLayer.fillColor = [[UIColor clearColor] CGColor];
 93 | 	self.shapeLayer2.fillColor = [[UIColor clearColor] CGColor];
 94 | #else //isMac
 95 | 	if (self.strokeColor == nil)
 96 | 		self.strokeColor = [NSColor whiteColor];
 97 | 	
 98 | 	self.shapeLayer.fillColor = [[NSColor clearColor] CGColor];
 99 | 	self.shapeLayer2.fillColor = [[NSColor clearColor] CGColor];
100 | #endif
101 | 	
102 | 	self.shapeLayer.strokeColor = self.strokeColor.CGColor;
103 | 	self.shapeLayer2.strokeColor = self.strokeColor.CGColor;
104 | 	[self.layer addSublayer:self.shapeLayer];
105 | 	[self.layer addSublayer:self.shapeLayer2];
106 | 	
107 | 	CGPathRelease(pathRef);
108 | 	
109 | 	[self addObserver:self forKeyPath:@"color" options:NSKeyValueObservingOptionNew context:nil];
110 | 	[self addObserver:self forKeyPath:@"lineWidth" options:NSKeyValueObservingOptionNew context:nil];
111 | }
112 | 
113 | - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
114 | {
115 | 	if (object == self && [keyPath isEqualToString:@"color"])
116 | 	{
117 | 		self.shapeLayer.strokeColor = self.strokeColor.CGColor;
118 | 		self.shapeLayer2.strokeColor = self.strokeColor.CGColor;
119 | 		return;
120 | 	} else if (object == self && [keyPath isEqualToString:@"lineWidth"])
121 | 	{
122 | 		if (self.strokeWidth <= 2.0)
123 | 			self.strokeWidth = 2.0;
124 | 		
125 | 		self.shapeLayer.lineWidth = self.strokeWidth;
126 | 		self.shapeLayer2.lineWidth = self.strokeWidth;
127 | 		return;
128 | 	}
129 | 	
130 | 	[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
131 | }
132 | 
133 | - (void)removeFromSuperview
134 | {
135 | 	self.shouldAnimate = NO;
136 | 	
137 | 	[super removeFromSuperview];
138 | }
139 | 
140 | - (void)setHidden:(BOOL)hidden
141 | {
142 | 	self.shouldAnimate = !hidden;
143 | 	if (hidden)
144 | 		[super setHidden:hidden];
145 | 	else
146 | 	{
147 | 		[super setHidden:hidden];
148 | 		[self _animate];
149 | 	}
150 | }
151 | 
152 | static CAMediaTimingFunction *tf = nil;
153 | static CGFloat duration = 0.125;
154 | - (void)_animate
155 | {
156 | 	if (tf == nil)
157 | 		tf = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
158 | 	
159 | 	//second animation, to whole left line
160 | 	[CATransaction setCompletionBlock:^{
161 | 		[CATransaction begin];
162 | 		[CATransaction setAnimationDuration:0.0];
163 | 		self.shapeLayer2.strokeStart = 0.75;
164 | 		self.shapeLayer2.strokeEnd = 0.75;
165 | 		[CATransaction commit];
166 | 		[CATransaction flush];
167 | 		
168 | 		[CATransaction setCompletionBlock:^{
169 | 			[CATransaction begin];
170 | 			[CATransaction setAnimationDuration:0.0];
171 | 			self.shapeLayer2.strokeStart = 0.75;
172 | 			self.shapeLayer2.strokeEnd = 1.0;
173 | 			self.shapeLayer.strokeStart = 0.0;
174 | 			self.shapeLayer.strokeEnd = 0.0;
175 | 			[CATransaction commit];
176 | 			[CATransaction flush];
177 | 			//third animation, to half left line and half top line
178 | 			[CATransaction setCompletionBlock:^{
179 | 				if (self.shouldAnimate)
180 | 					[self _animate];
181 | 			}];
182 | 			[CATransaction begin];
183 | 			[CATransaction setAnimationTimingFunction:tf];
184 | 			[CATransaction setAnimationDuration:duration];
185 | 			self.shapeLayer2.strokeStart = 0.75+0.125;
186 | 			self.shapeLayer.strokeEnd = 0.125;
187 | 			[CATransaction commit];
188 | 			
189 | 			/* 4; animate back to initial position:
190 | 			 
191 | 			 | - - .
192 | 			 |     .
193 | 			 .     .
194 | 			 . . . .
195 | 			 
196 | 			 */
197 | 		}];
198 | 		[CATransaction begin];
199 | 		[CATransaction setAnimationTimingFunction:tf];
200 | 		[CATransaction setAnimationDuration:duration*6]; //*6 because it's 6 steps
201 | 		self.shapeLayer.strokeStart = 0.75;
202 | 		self.shapeLayer.strokeEnd = 1.0;
203 | 		[CATransaction commit];
204 | 		
205 | 		/* 3; animate to this (second animation, all done in one animation)
206 | 		 
207 | 		 . - - |
208 | 		 .     |
209 | 		 .     .
210 | 		 . . . .
211 | 		 
212 | 		 . . . |
213 | 		 .     |
214 | 		 .     |
215 | 		 . . . |
216 | 		 
217 | 		 . . . .
218 | 		 .     .
219 | 		 .     |
220 | 		 . _ _ |
221 | 		 
222 | 		 . . . .
223 | 		 .     .
224 | 		 .     .
225 | 		 _ _ _ _
226 | 		 
227 | 		 . . . .
228 | 		 |     .
229 | 		 |     .
230 | 		 _ _ . .
231 | 		 
232 | 		 | . . .
233 | 		 |     .
234 | 		 |     .
235 | 		 | . . .
236 | 		 
237 | 		 */
238 | 	}];
239 | 	
240 | 	//first animation, from left half and top half to top whole line
241 | 	/* 1; initial position:
242 | 	 
243 | 		| - - .
244 | 		|     .
245 | 		.     .
246 | 		. . . .
247 | 	 
248 | 	 */
249 | 	[CATransaction begin];
250 | 	[CATransaction setAnimationTimingFunction:tf];
251 | 	[CATransaction setAnimationDuration:duration];
252 | 	
253 | 	self.shapeLayer2.strokeStart = 1.0;
254 | 	self.shapeLayer2.strokeEnd = 1.0;
255 | 	
256 | 	self.shapeLayer.strokeStart = 0.0;
257 | 	self.shapeLayer.strokeEnd = 0.25;
258 | 	[CATransaction commit];
259 | 	
260 | 	/* 2; animated to this:
261 | 	 
262 | 		- - - -
263 | 		.     .
264 | 		.     .
265 | 		. . . .
266 | 	 
267 | 	 */
268 | }
269 | 
270 | - (void)dealloc
271 | {
272 | 	[self removeObserver:self forKeyPath:@"color"];
273 | 	[self removeObserver:self forKeyPath:@"lineWidth"];
274 | }
275 | 
276 | #else //is Interface Builder
277 | #pragma mark - Interface Builder Mockup Drawing
278 | 
279 | #if (isiOS)
280 | - (instancetype)initWithFrame:(CGRect)frameRect
281 | #elif (isMac)
282 | - (instancetype)initWithFrame:(NSRect)frameRect
283 | #endif
284 | {
285 | 	if (self = [super initWithFrame:frameRect])
286 | 	{
287 | 		[self inspectableDefaults];
288 | 		return self;
289 | 	}
290 | 	
291 | 	return nil;
292 | }
293 | 
294 | - (instancetype)initWithCoder:(NSCoder *)coder
295 | {
296 | 	if (self = [super initWithCoder:coder])
297 | 	{
298 | 		[self inspectableDefaults];
299 | 		return self;
300 | 	}
301 | 	
302 | 	return nil;
303 | }
304 | 
305 | - (void)inspectableDefaults
306 | {
307 | #if (isiOS)
308 | 	_strokeColor = [UIColor blackColor];
309 | #elif (isMac)
310 | 	_strokeColor = [NSColor blackColor];
311 | #endif
312 | 	_strokeWidth = 2.0;
313 | }
314 | 
315 | /*
316 |  Draws a part of the path that will be animated in the built app.
317 |  Animation with CALayer seems to be not supported by live rendering.
318 |  */
319 | #if (isiOS)
320 | - (void)drawRect:(CGRect)rect
321 | #elif (isMac)
322 | - (void)drawRect:(NSRect)dirtyRect
323 | #endif
324 | {
325 | 	[_strokeColor set];
326 | 	CGFloat strokeWidthHalf = _strokeWidth/2.0;
327 | 	
328 | #if (isiOS)
329 | 	UIBezierPath *bp = [UIBezierPath bezierPath];
330 | 	bp.lineWidth = _strokeWidth;
331 | 	[bp moveToPoint:CGPointMake(strokeWidthHalf, self.frame.size.height/2.0)];
332 | 	[bp addLineToPoint:CGPointMake(strokeWidthHalf, 0+strokeWidthHalf)];
333 | 	[bp moveToPoint:CGPointMake(strokeWidthHalf, 0+strokeWidthHalf)];
334 | 	[bp addLineToPoint:CGPointMake(self.frame.size.width/2.0, 0+strokeWidthHalf)];
335 | #elif (isMac)
336 | 	NSBezierPath *bp = [NSBezierPath bezierPath];
337 | 	bp.lineWidth = _strokeWidth;
338 | 	[bp moveToPoint:NSMakePoint(strokeWidthHalf, self.frame.size.height/2.0)];
339 | 	[bp lineToPoint:NSMakePoint(strokeWidthHalf, self.frame.size.height-strokeWidthHalf)];
340 | 	[bp moveToPoint:NSMakePoint(strokeWidthHalf, self.frame.size.height-strokeWidthHalf)];
341 | 	[bp lineToPoint:NSMakePoint(self.frame.size.width/2.0, self.frame.size.height-strokeWidthHalf)];
342 | #endif
343 | 	[bp closePath];
344 | 	[bp stroke];
345 | }
346 | 
347 | #endif
348 | @end
349 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/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 | }


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/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>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>at.EternalStorms.$(PRODUCT_NAME:rfc1034identifier)</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 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
37 | 		<string>UIInterfaceOrientationLandscapeRight</string>
38 | 	</array>
39 | 	<key>UISupportedInterfaceOrientations~ipad</key>
40 | 	<array>
41 | 		<string>UIInterfaceOrientationPortrait</string>
42 | 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
43 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
44 | 		<string>UIInterfaceOrientationLandscapeRight</string>
45 | 	</array>
46 | </dict>
47 | </plist>
48 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/ViewController.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.h
 3 | //  ESSSquareProgressIndicator
 4 | //
 5 | //  Created by Matthias Gansrigler on 02.04.2015.
 6 | //  Copyright (c) 2015 Eternal Storms Software. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface ViewController : UIViewController
12 | 
13 | 
14 | @end
15 | 
16 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/ViewController.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.m
 3 | //  ESSSquareProgressIndicator
 4 | //
 5 | //  Created by Matthias Gansrigler on 02.04.2015.
 6 | //  Copyright (c) 2015 Eternal Storms Software. All rights reserved.
 7 | //
 8 | 
 9 | #import "ViewController.h"
10 | 
11 | @interface ViewController ()
12 | 
13 | @end
14 | 
15 | @implementation ViewController
16 | 
17 | - (void)viewDidLoad {
18 | 	[super viewDidLoad];
19 | 	// Do any additional setup after loading the view, typically from a nib.
20 | }
21 | 
22 | - (void)didReceiveMemoryWarning {
23 | 	[super didReceiveMemoryWarning];
24 | 	// Dispose of any resources that can be recreated.
25 | }
26 | 
27 | @end
28 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicator/main.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  main.m
 3 | //  ESSSquareProgressIndicator
 4 | //
 5 | //  Created by Matthias Gansrigler on 02.04.2015.
 6 | //  Copyright (c) 2015 Eternal Storms Software. 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 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicatorTests/ESSSquareProgressIndicatorTests.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ESSSquareProgressIndicatorTests.m
 3 | //  ESSSquareProgressIndicatorTests
 4 | //
 5 | //  Created by Matthias Gansrigler on 02.04.2015.
 6 | //  Copyright (c) 2015 Eternal Storms Software. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | #import <XCTest/XCTest.h>
11 | 
12 | @interface ESSSquareProgressIndicatorTests : XCTestCase
13 | 
14 | @end
15 | 
16 | @implementation ESSSquareProgressIndicatorTests
17 | 
18 | - (void)setUp {
19 |     [super setUp];
20 |     // Put setup code here. This method is called before the invocation of each test method in the class.
21 | }
22 | 
23 | - (void)tearDown {
24 |     // Put teardown code here. This method is called after the invocation of each test method in the class.
25 |     [super tearDown];
26 | }
27 | 
28 | - (void)testExample {
29 |     // This is an example of a functional test case.
30 |     XCTAssert(YES, @"Pass");
31 | }
32 | 
33 | - (void)testPerformanceExample {
34 |     // This is an example of a performance test case.
35 |     [self measureBlock:^{
36 |         // Put the code you want to measure the time of here.
37 |     }];
38 | }
39 | 
40 | @end
41 | 


--------------------------------------------------------------------------------
/ESSSquareProgressIndicatorTests/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>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>at.EternalStorms.$(PRODUCT_NAME:rfc1034identifier)</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>BNDL</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 | </dict>
24 | </plist>
25 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # ESSSquareProgressIndicator
 2 | A rectangular (square), indeterminate progress indicator for iOS and OS X ([Blog Post](https://eternalstorms.wordpress.com/2015/04/02/esssquareprogressindicator-for-ios-and-os-x/))
 3 | 
 4 | ![ESSSquareProgressIndicator Animation](http://eternalstorms.at/opensource/ESSSquareProgressIndicator/indicator.gif "ESSSquareProgressIndicator Animation")
 5 | 
 6 | It was created during the development of the iOS game [Reach ZEN](http://zen.gansrigler.com).
 7 | 
 8 | ## First, the License Agreement
 9 | 
10 | 1) You can use the code in your own products.  
11 | 2) You can modify the code as you wish, and use the modified code in your products.  
12 | 3) You can redistribute the original, unmodified code, but you have to include the full license text below.  
13 | 4) You can redistribute the modified code as you wish (without the full license text below).  
14 | 5) In all cases, you must include a credit mentioning Matthias Gansrigler as the original author of the source.  
15 | 6) I’m not liable for anything you do with the code, no matter what. So be sensible.  
16 | 7) You can’t use my name or other marks to promote your products based on the code.  
17 | 8) If you agree to all of that, go ahead and download the source. Otherwise, don’t.
18 | 
19 | # How To Use ESSSquareProgressIndicator
20 | 
21 | Place a UIView / NSView in your interface and set its class to ESSSquareProgressIndicator. Done.  
22 | The color and stroke width of the progress indicator can be changed in code or in Interface Builder due to IB_DESIGNABLE and IBInspectable.
23 | 
24 | ## Requirements
25 | This code has been tested on iOS 7.1 and OS X Yosemite 10.10. It might work with earlier versions of these platforms.  
26 | Developed with Xcode 6.2
27 | 
28 | ## Support
29 | The framework and code is provided as-is, but if you need help or have suggestions, you can contact me anytime at [opensource@eternalstorms.at](mailto:opensource@eternalstorms.at) or [@eternalstorms on twitter](http://twitter.com/eternalstorms)
30 | 
31 | For other Open Source projects of mine, please visit http://www.eternalstorms.at/opensource
32 | 
33 | # I want to hear from you
34 | If you use ESSSquareProgressIndicator in one of your projects, please [let me know](mailto:opensource@eternalstorms.at)! I'd love to hear about your apps and mention them here on this project page :) !!


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