Hi community, newbie here and decided to tackle an app with a big element using Shape. I have created a view which draws segments of a circle and puts them together into said circle. I am now trying to add text to each segment to label them (as they act as buttons). I have tried using simple attempts such as .overlay as well as searching forums for solutions such as this one: https://stackoverflow.com/questions/66187564/how-can-i-insert-uiimages-in-my-circle-segments-with-swiftui
Unfortunately I am not able to get the label to sit over its respective segment. The code I am sharing removes all attempts at labelling to show its current state.
Here is my code to draw the segmented wheel:
struct EmotionWheelView: View {
// Prepare array of emotions for the selector
let emotions: [Emotion] = Bundle.main.decode("emotions.json")
// Bringing in the tapped and selected emotions to set in the parent
@Binding public var tappedEmotion: String
@Binding public var selectedEmotion: String
@Binding public var selectedSegment: Int?
var selectableEmotions: [Emotion] {
var results: [Emotion] = []
if selectedEmotion.isEmpty {
for emotion in emotions {
if emotion.level == 1 {
results.append(emotion)
}
}
} else {
var baseEmotion: Emotion {
var result: Emotion = emotions[0]
for emotion in emotions {
if emotion.name == selectedEmotion {
result = emotion
}
}
return result
}
for emotion in emotions {
for subID in baseEmotion.subID {
if emotion.id == subID {
results.append(emotion)
}
}
}
}
return results
}
var data: [Double] {
var results: [Double] = []
for _ in selectableEmotions {
results.append(2.0)
}
return results
}
var colors: [Color] {
var results: [Color] = []
var color: Color = .red
for emotion in selectableEmotions {
switch emotion.color {
case "purple":
color = Color.purple
case "pink":
color = Color.pink
case "orange":
color = Color.orange
case "yellow":
color = Color.yellow
case "green":
color = Color.green
case "teal":
color = Color.teal
case "blue":
color = Color.blue
default:
color = Color.black
}
results.append(color)
}
return results
}
var body: some View {
EmotionWheel(selectableEmotions: selectableEmotions, data: data, colors: colors, tappedEmotion: $tappedEmotion, selectedSegment: $selectedSegment)
.frame(maxHeight: 200)
}
}
struct EmotionWheel: View {
var selectableEmotions: [Emotion]
var data: [Double]
var colors: [Color]
@Binding var tappedEmotion: String
@Binding var selectedSegment: Int?
private var totalValue: Double {
data.reduce(0, +)
}
private var startAngles: [Double] {
var angles: [Double] = []
var currentAngle = -Double.pi / 2
for value in data {
angles.append(currentAngle)
currentAngle += value / totalValue * 2 * .pi
}
return angles
}
private var endAngles: [Double] {
var angles: [Double] = []
var currentAngle = -Double.pi / 2
for value in data {
currentAngle += value / totalValue * 2 * .pi
angles.append(currentAngle)
}
return angles
}
var body: some View {
GeometryReader { geo in
ZStack {
ForEach(0..<data.count, id: \.self) { index in
WheelSegment(startAngle: startAngles[index], endAngle: endAngles[index])
.stroke(Color(UIColor.systemBackground), lineWidth: 1)
.fill(colors[index].gradient)
.onTapGesture {
withAnimation {
selectedSegment = index
tappedEmotion = selectableEmotions[index].name
}
}
.scaleEffect(selectedSegment == index ? 1.1 : 1.0)
.animation(.spring(dampingFraction: 0.8), value: selectedSegment)
}
Circle()
.foregroundStyle(Color(UIColor.systemBackground))
.frame(width: geo.size.width / 2)
.overlay {
Text(tappedEmotion)
.fontWeight(.bold)
.foregroundStyle(getTappedColor(tappedEmotion: tappedEmotion))
.padding()
}
}
.padding(40)
}
}
}
struct WheelSegment: Shape {
var startAngle: Double
var endAngle: Double
func path(in rect: CGRect) -> Path {
var path = Path()
let center = CGPoint(x: rect.midX, y: rect.midY)
let radius = min(rect.width, rect.height)
path.move(to: center)
path.addArc(center: center, radius: radius, startAngle: Angle(radians: startAngle), endAngle: Angle(radians: endAngle), clockwise: false)
path.closeSubpath()
return path
}
}
func getTappedColor(tappedEmotion: String) -> Color {
let emotions: [Emotion] = Bundle.main.decode("emotions.json")
var color: Color = .red
var toColor: Emotion {
for emotion in emotions {
if emotion.name == tappedEmotion {
return emotion
}
}
return emotions[0]
}
switch toColor.color {
case "purple":
color = Color.purple
case "pink":
color = Color.pink
case "orange":
color = Color.orange
case "yellow":
color = Color.yellow
case "green":
color = Color.green
case "teal":
color = Color.teal
case "blue":
color = Color.blue
default:
color = Color.black
}
return color
}
Result:
Crude representation of goal (you get the idea):