Access control
-
privatedoesn't allow anyone outside the struct/class access it -
private(set)means that setting is private but reading is not meaning that anyone can read it
ViewBuilder (12:05)
@ViewBuilder can be added to any function that returns a view. If there is a list of views it combines them into one.
"The contents of a @ViewBuilder is a list of Views. No need to type return. Cannot use vars.
@ViewBuilder
func front(of card: Card) -> some View {
RoundedRectangle(cornerRadius: 10)
RoundedRectangle(cornerRadius: 10).stroke()
Text(card.content)
}
Shape (20:22)
CG = Core Graphics
import SwiftUI
struct Pie: Shape {
var startAngle: Angle
var endAngle: Angle
var clockwise: Bool = false
func path(in rect: CGRect) -> Path {
let center = CGPoint(x: react.midX, y: react.midY)
let radius = min(rect.width, rect.height) / 2
let start = CGPoint(
x: center.x + radius * cos(CGFloat(startAngle.radians)),
y: center.y + radius * sin(CGFloat(startAngle.radians))
)
var p = Path()
p.move(to: center)
p.addLine(to: start)
p.addArc(
center: center,
radius: radius,
startAngle: startAngle,
endAngle: endAngle,
clockwise: clockwise
)
p.addLine(to: center)
return p
}
- 0 degrees is to right
- 0x0 is in left top corner and increases by going down and right
ViewModifier (41:54)
- There are two things that can be animated: shapes and views.
- Animating views happens in ViewModifier
- Modifier can for example make any view to look like a card, cardify
Text("Ghost").modifier(Cardify(isFaceUp: true))
struct Cardify: ViewModifier {
var isFaceUp: Bool
func body(content: Content) -> some View {
ZStack {
if isFaceUp {
RoundedRectangle(cornerRadius: 10).fill(Color.white)
RoundedRectangle(cornerRadius: 10).stroke()
content
} else {
RoundedRectangle(cornerRadius: 10)
}
}
}
}
Text("Ghost").cardify(isFaceUp: true)
extension View {
func cardify(isFaceUp: Bool) -> some View {
return self.modifier(Cardify(isFaceUp: isFaceUp))
}
}
Top comments (0)