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// Copyright (C) 2024 Rubén Beltrán del Río
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see https://map.tranquil.systems.
import SwiftUI
struct MapMask: View {
let mapSize: CGSize
let vertexSize: CGSize
let vertices: [Vertex]
let labelPositions: [Int: CGPoint]
let padding = CGFloat(5.0)
var body: some View {
ZStack(alignment: .topLeading) {
ForEach(vertices, id: \.id) { vertex in
ZStack(alignment: .topLeading) {
Text(vertex.label.replacingOccurrences(of: "\\n", with: "\n"))
.font(.Theme.Map.vertexLabel)
.lineSpacing(
Dimensions.LineHeight.Map.vertexLabel - Dimensions.FontSize.Map.vertexLabel
)
.foregroundColor(.white)
.background(.white)
.padding(.horizontal, 1.0)
.clipShape(Capsule())
.offset(
CGSize(
width: labelPositions[vertex.id]?.x
?? (w(vertex.position.x) + vertexSize.width + padding),
height: labelPositions[vertex.id]?.y ?? (h(vertex.position.y) + 7.0))
)
.blendMode(.destinationOut)
}.zIndex(1)
}
Rectangle()
.fill(.black)
}.drawingGroup()
}
func h(_ dimension: CGFloat) -> CGFloat {
max(0.0, min(mapSize.height, dimension * mapSize.height / 100.0))
}
func w(_ dimension: CGFloat) -> CGFloat {
max(0.0, min(mapSize.width, dimension * mapSize.width / 100.0))
}
}
#Preview {
MapMask(
mapSize: CGSize(width: 400.0, height: 400.0), vertexSize: CGSize(width: 25.0, height: 25.0),
vertices: [
Vertex(id: 0, label: "A Circle", position: CGPoint(x: 50.0, y: 50.0)),
Vertex(id: 1, label: "A Square", position: CGPoint(x: 10.0, y: 20.0), shape: .square),
Vertex(id: 2, label: "A triangle", position: CGPoint(x: 25, y: 32.0), shape: .triangle),
Vertex(id: 3, label: "An X", position: CGPoint(x: 70.0, y: 70.0), shape: .xMark)
],
labelPositions: [:])
}
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