Tetris/TetrisUI/GridView.swift

49 lines
1.3 KiB
Swift

//
// GridView.swift
// Tetris
//
// Created by Shadowfacts on 10/14/19.
// Copyright © 2019 Shadowfacts. All rights reserved.
//
import SwiftUI
struct GridView<Cell>: View where Cell: View {
let rows: Int
let columns: Int
let cellProvider: (Int, Int, CGFloat) -> Cell
init(rows: Int, columns: Int, @ViewBuilder cellProvider: @escaping (Int, Int, CGFloat) -> Cell) {
self.rows = rows
self.columns = columns
self.cellProvider = cellProvider
}
var body: some View {
GeometryReader { (geometry) in
VStack(spacing: 0) {
ForEach(0..<self.rows, id: \.self) { (row) in
HStack(spacing: 0) {
ForEach(0..<self.columns, id: \.self) { (col) in
self.cellProvider(col, row, self.cellSize(for: geometry))
}
}
}
}
}
}
func cellSize(for geometry: GeometryProxy) -> CGFloat {
min(geometry.size.width / CGFloat(columns), geometry.size.height / CGFloat(rows))
}
}
struct GridView_Previews: PreviewProvider {
static var previews: some View {
GridView(rows: 3, columns: 3) { (col, row, size) in
Rectangle().frame(width: size, height: size).foregroundColor(Color.red)
}
}
}