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// | |
// UIView+Helpers.swift | |
// DMLOOYFG | |
// | |
// Created by Roman Rechich on 07.10.2021. | |
// | |
import UIKit | |
import SwiftUI |
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extension Binding { | |
func onChange(_ handler: @escaping (Value) -> Void) -> Binding<Value> { | |
Binding( | |
get: { self.wrappedValue }, | |
set: { newValue in | |
self.wrappedValue = newValue | |
handler(newValue) | |
} | |
) | |
} |
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extension Collection { | |
subscript(safe index: Index) -> Element? { | |
return indices.contains(index) ? self[index] : nil | |
} | |
} |
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struct ColSpan<Content: View>: View { | |
let span: Bool | |
let content: () -> Content | |
init(span: Bool, @ViewBuilder content: @escaping () -> Content) { | |
self.span = span | |
self.content = content | |
} | |
var body: some View { |
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struct SizePreferenceKey: PreferenceKey { | |
static var defaultValue: CGSize = .zero | |
static func reduce(value: inout CGSize, nextValue: () -> CGSize) {} | |
} | |
extension View { | |
func readSize(onChange: @escaping (CGSize) -> Void) -> some View { | |
background( | |
GeometryReader { geometryProxy in | |
Color.clear |
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struct ContentView: View { | |
var body: some View { | |
ScrollViewOffset(onOffsetChange: { (offset) in | |
print("New ScrollView offset: \(offset)") | |
}) { | |
VStack { | |
ForEach(0..<100) { index in | |
Text("\(index)") | |
} | |
} |
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struct SwiftUIView: View { | |
var condition1: Bool = true | |
var condition2: Bool = false | |
var customColor: Color? | |
var body: some View { | |
Text("Hello, World!") | |
.ifLet(customColor) { $0.foregroundColor($1) } | |
.if(condition1) { $0.padding(16) } | |
.if(condition2) { $0.hidden() } |
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extension UIImage { | |
func replaceColor(_ color: UIColor, with: UIColor) -> UIImage? { | |
guard let fromRGB = color.rgb(), let toRGB = with.rgb() else { return self } | |
let rect = CGRect(x: 0, y: 0, width: self.size.width, height: self.size.height) | |
UIGraphicsBeginImageContextWithOptions(rect.size, false, self.scale) | |
UIRectFill(rect) | |
draw(in: rect, blendMode: .copy, alpha: 1) | |
guard let contextRef = UIGraphicsGetCurrentContext() else { return self } |
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<key>NSAppTransportSecurity</key> | |
<dict> | |
<key>NSAllowsArbitraryLoads</key> | |
<true/> | |
</dict> |
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# Xcode | |
# | |
# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore | |
## Build generated | |
build/ | |
DerivedData/ | |
## Various settings | |
*.pbxuser |
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