import Foundation
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public enum MinimizedWindowFallbackPolicy {
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public static let syntheticWindowIDMarker: UInt32 = 0x8000_0000
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public static func shouldCreateAXOnlyFallback(hasCGWindowID: Bool, isMinimized: Bool) -> Bool {
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!hasCGWindowID && isMinimized
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}
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public static func isSyntheticWindow(_ window: AlignerWindow) -> Bool {
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window.identifierSource == .syntheticAX
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}
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public static func syntheticWindowID(
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processIdentifier: Int32,
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windowIndex: Int,
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title: String,
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subroleDescription: String,
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occupiedWindowIDs: Set<UInt32> = []
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) -> UInt32 {
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let key = "\(processIdentifier)|\(windowIndex)|\(title)|\(subroleDescription)"
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var candidate = syntheticWindowIDMarker | (fnv1a32(key) & ~syntheticWindowIDMarker)
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while candidate == 0 || occupiedWindowIDs.contains(candidate) {
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candidate = syntheticWindowIDMarker | ((candidate &+ 1) & ~syntheticWindowIDMarker)
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}
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return candidate
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}
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private static func fnv1a32(_ value: String) -> UInt32 {
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var hash: UInt32 = 2_166_136_261
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for byte in value.utf8 {
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hash ^= UInt32(byte)
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hash = hash &* 16_777_619
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}
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return hash
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}
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}
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