89 lines
2.8 KiB
Swift
89 lines
2.8 KiB
Swift
//
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// BoardView.swift
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// TTTKit
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//
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// Created by Shadowfacts on 12/21/22.
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//
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import SwiftUI
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@available(iOS 16.0, *)
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struct BoardView<Cell: View>: View {
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let board: any Board
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@Binding var cellSize: CGFloat
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let spacing: CGFloat
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let cellProvider: (_ column: Int, _ row: Int) -> Cell
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init(board: any Board, cellSize: Binding<CGFloat>, spacing: CGFloat, @ViewBuilder cellProvider: @escaping (Int, Int) -> Cell) {
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self.board = board
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self._cellSize = cellSize
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self.spacing = spacing
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self.cellProvider = cellProvider
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}
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var body: some View {
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ZStack {
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if let win = board.win {
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winOverlay(win)
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}
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Grid(horizontalSpacing: 10, verticalSpacing: 10) {
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GridRow {
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cellProvider(0, 0)
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.background(GeometryReader { proxy in
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Color.clear
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.preference(key: MarkSizePrefKey.self, value: proxy.size.width)
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.onPreferenceChange(MarkSizePrefKey.self) { newValue in
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cellSize = newValue
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}
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})
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cellProvider(1, 0)
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cellProvider(2, 0)
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}
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GridRow {
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cellProvider(0, 1)
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cellProvider(1, 1)
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cellProvider(2, 1)
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}
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GridRow {
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cellProvider(0, 2)
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cellProvider(1, 2)
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cellProvider(2, 2)
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}
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}
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let sepOffset = (cellSize + spacing) / 2
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Separator(axis: .vertical)
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.offset(x: -sepOffset)
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Separator(axis: .vertical)
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.offset(x: sepOffset)
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Separator(axis: .horizontal)
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.offset(y: -sepOffset)
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Separator(axis: .horizontal)
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.offset(y: sepOffset)
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}
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.padding(.all, spacing / 2)
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.aspectRatio(1, contentMode: .fit)
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}
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private func winOverlay(_ win: Win) -> some View {
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let pointsWithIndices = win.points.map { ($0, $0.row * 3 + $0.column) }
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let cellSize = cellSize + spacing
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return ForEach(pointsWithIndices, id: \.1) { (point, _) in
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Rectangle()
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.foregroundColor(Color(UIColor.green))
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.opacity(0.5)
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.frame(width: cellSize, height: cellSize)
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.offset(x: CGFloat(point.column - 1) * cellSize, y: CGFloat(point.row - 1) * cellSize)
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}
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}
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}
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private struct MarkSizePrefKey: PreferenceKey {
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static var defaultValue: CGFloat = 0
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static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
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value = nextValue()
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}
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}
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