0xMarK’s gists

0xMarK / MyDataModel.swift

Created July 15, 2019 14:25

SwifttUI CoreData integration

	class MyDataModel: BindableObject {
	var didChange = PassthroughSubject<Void, Never>()
	}

	extension MyDataModel: NSFetchedResultsControllerDelegate {
	func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
	didChange.send()
	}
	}

0xMarK / KeyValueObserving.swift

Last active July 15, 2019 14:19

SwiftUI (Combine) Publishers

	class MyDefaults: BindableObject {
	public var didChange: AnyPublisher<Bool, Never>

	init() {
	let defaults = UserDefaults.standard
	didChange = Publishers.Merge(
	defaults.publisher(for: \.userOption1),
	defaults.publisher(for: \.userOption2)
	)
	.receive(on: RunLoop.main)

0xMarK / MaskHole

Created April 15, 2015 22:46

Mask a hole inside a rect.

	// Mask
	CAShapeLayer *maskLayer = [CAShapeLayer layer];
	maskLayer.fillRule = kCAFillRuleEvenOdd;
	maskLayer.frame = CGRectMake(0, 0, self.notificationsTabBarButton.frame.size.width, self.notificationsTabBarButton.frame.size.height);

	CGPoint circleCenter = self.notificationsBadge.center;
	CGFloat innerCircleRadius = self.notificationsBadge.frame.size.width/2;
	CGFloat circleRadius = innerCircleRadius + 2;

	UIBezierPath circlePath = [UIBezierPath bezierPathWithArcCenter:circleCenter radius:circleRadius startAngle:0.0 endAngle:M_PI 2.0 clockwise:YES];

0xMarK / gist:8678511

Created January 28, 2014 23:03

Adds a white bordered complex shape to a UIView.

	UIBezierPath* bezierPath = [UIBezierPath bezierPath];
	[bezierPath moveToPoint:CGPointMake(0.0, 5.0)];
	[bezierPath addArcWithCenter:CGPointMake(5.0, 5.0) radius:5.0 startAngle:DEGREES_TO_RADIANS(180) endAngle:DEGREES_TO_RADIANS(-90) clockwise:YES];
	[bezierPath addLineToPoint:CGPointMake(5.0, 20.0)];
	[bezierPath closePath];

	CAShapeLayer *shape = [CAShapeLayer layer];
	shape.frame = self.poster.bounds;
	shape.path = bezierPath.CGPath;
	shape.fillColor = [UIColor clearColor].CGColor;

0xMarK / gist:8678441

Created January 28, 2014 22:59

A complicated mask with UIBezierPath

	CAShapeLayer *maskLayer = [CAShapeLayer layer];
	maskLayer.frame = CGRectMake(0, 0, self.poster.frame.size.width, self.poster.frame.size.height);

	UIBezierPath* bezierPath = [UIBezierPath bezierPath];
	[bezierPath moveToPoint:CGPointMake(0.0, 5.0)];
	[bezierPath addArcWithCenter:CGPointMake(5.0, 5.0) radius:5.0 startAngle:DEGREES_TO_RADIANS(180) endAngle:DEGREES_TO_RADIANS(-90) clockwise:YES];
	[bezierPath addLineToPoint:CGPointMake(107.0, 0.0)];
	[bezierPath addArcWithCenter:CGPointMake(107.0, 5.0) radius:5.0 startAngle:DEGREES_TO_RADIANS(-90) endAngle:DEGREES_TO_RADIANS(0) clockwise:YES];
	[bezierPath addLineToPoint:CGPointMake(112.0, 89.0)];
	[bezierPath addArcWithCenter:CGPointMake(107.0, 89.0) radius:5.0 startAngle:DEGREES_TO_RADIANS(0) endAngle:DEGREES_TO_RADIANS(90) clockwise:YES];

0xMarK / gist:8678345

Created January 28, 2014 22:53

Create mask layer with image file

	// Create mask layer
	UIImage *maskImage = [UIImage imageNamed:@"posterMask"];
	CAShapeLayer* maskLayer = [CAShapeLayer layer];
	maskLayer.frame = CGRectMake(0, 0, maskImage.size.width,maskImage.size.height);
	maskLayer.contents = (__bridge id)maskImage.CGImage;
	self.poster.layer.mask = maskLayer;

0xMarK / gist:5850441

Created June 24, 2013 14:27

Form fields stepper

	- (void) viewWillAppear:(BOOL)animated {
	UIToolbar* toolbar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)];
	toolbar.barStyle = UIBarStyleBlackTranslucent;
	toolbar.items = [NSArray arrayWithObjects:
	[[UIBarButtonItem alloc]initWithTitle:@"Previous" style:UIBarButtonItemStyleBordered target:self action:@selector(previous:)],
	[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil],
	[[UIBarButtonItem alloc]initWithTitle:@"Next" style:UIBarButtonItemStyleDone target:self action:@selector(next:)],
	nil];
	[toolbar sizeToFit];
	for (UIView * view in self.view.subviews) {

Anton Kaliuzhnyi 0xMarK