How can make my Window size be big as Screen of mac?

Question

I am using this code for help Xcode to build my Window Size as big as the screen of mac, but it does not get maxed! How we can read the size of screen and set it for view size for taking all available space on screen? It would be great getting a SwiftUI approach for the issue.

struct ContentView: View {

    var body: some View {
        
        Color.purple
            .frame(maxWidth: .infinity, maxHeight: .infinity)

    }
    
}

https://stackoverflow.com/questions/56857782/define-macos-window-size-using-swiftui — ChrisR, Feb 21 '22 at 13:17
I rarely ever use a mac app in full screen mode. Shouldn't that preference be left to the user. — Marcy, Feb 24 '23 at 23:55

score 0 · Accepted Answer · answered Feb 21 '22 at 15:07

0

    let screenSize = NSScreen.main?.frame.size ?? CGSize(width: 800, height: 600)
    
    Color.purple
        .frame(width: screenSize.width, height: screenSize.height)

answered Feb 21 '22 at 15:07

ChrisR

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It is not 100% SwiftUI, but it is better than nothing. thanks – ios coder Feb 21 '22 at 15:29
yeah, I don't know of a pure SwiftUI solution yet.e.g. would be nice to maximize a window to full screen programmatically ... – ChrisR Feb 21 '22 at 15:41
Yes, that would be nice some view that can full all available space of screen like iOS. – ios coder Feb 21 '22 at 17:20

score 0 · Answer 2 · answered Feb 23 '23 at 19:51

Here's a cross-platform version I've created, please let me know if you spot anything amiss.

It's not yet tested on MacOS or WatchOS but compiles fine.

import Foundation

#if os(macOS)
import AppKit
#elseif os(iOS)
import UIKit
#elseif os(watchOS)
import WatchKit
#endif

struct Screen {
#if os(macOS)
    static var size: CGSize = NSScreen.main?.visibleFrame.size ?? NSScreen.main?.frame.size ?? CGSizeMake(0, 0)
#elseif os(iOS)
    static var size: CGSize = UIScreen.main.bounds.size
#elseif os(watchOS)
    static var size: CGSize = WKInterfaceDevice.current().screenBounds.size
#endif
    static var minX: CGFloat { 0 }
    static var minY: CGFloat { 0 }
    static var maxX: CGFloat { size.width }
    static var maxY: CGFloat { size.height }
    static var midX: CGFloat { (maxX - minX) / 2 }
    static var midY: CGFloat { (maxY - minY) / 2 }
}

How can make my Window size be big as Screen of mac?

2 Answers2