108 lines
3.2 KiB
Swift
108 lines
3.2 KiB
Swift
//
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import Foundation
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public import SignalServiceKit
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import UIKit
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// MARK: -
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/// ColorOrGradientSetting is used for persistence and comparison.
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/// ColorOrGradientValue is used for rendering.
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public enum ColorOrGradientValue: CustomStringConvertible {
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case transparent
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case solidColor(color: UIColor)
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/// If angleRadians = 0, gradientColor1 is N.
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/// If angleRadians = PI / 2, gradientColor1 is E.
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/// etc.
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case gradient(
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gradientColor1: UIColor,
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gradientColor2: UIColor,
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angleRadians: CGFloat
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)
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public var description: String {
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switch self {
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case .transparent:
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return "[transparent]"
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case .solidColor(let color):
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return "[solidColor: \(color.asOWSColor)]"
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case .gradient(let gradientColor1, let gradientColor2, let angleRadians):
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return "[gradient gradientColor1: \(gradientColor1.asOWSColor), gradientColor2: \(gradientColor2.asOWSColor), angleRadians: \(angleRadians)]"
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}
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}
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}
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// MARK: -
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public enum ColorOrGradientThemeMode: Int {
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case auto
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case alwaysLight
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case alwaysDark
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}
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// MARK: -
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public extension ColorOrGradientSetting {
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var asValue: ColorOrGradientValue {
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asValue(themeMode: .auto)
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}
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func asValue(themeMode: ColorOrGradientThemeMode) -> ColorOrGradientValue {
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let shouldUseDarkColors: Bool = {
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switch themeMode {
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case .auto:
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return Theme.isDarkThemeEnabled
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case .alwaysDark:
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return true
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case .alwaysLight:
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return false
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}
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}()
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switch self {
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case .solidColor(let solidColor):
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return .solidColor(color: solidColor.asUIColor)
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case .themedColor(let lightThemeColor, let darkThemeColor):
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let color = shouldUseDarkColors ? darkThemeColor : lightThemeColor
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return .solidColor(color: color.asUIColor)
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case .gradient(let gradientColor1, let gradientColor2, let angleRadians):
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return .gradient(
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gradientColor1: gradientColor1.asUIColor,
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gradientColor2: gradientColor2.asUIColor,
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angleRadians: angleRadians
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)
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case .themedGradient(
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let lightGradientColor1,
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let lightGradientColor2,
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let darkGradientColor1,
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let darkGradientColor2,
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let angleRadians
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):
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let gradientColor1 = shouldUseDarkColors ? darkGradientColor1 : lightGradientColor1
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let gradientColor2 = shouldUseDarkColors ? darkGradientColor2 : lightGradientColor2
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return .gradient(
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gradientColor1: gradientColor1.asUIColor,
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gradientColor2: gradientColor2.asUIColor,
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angleRadians: angleRadians
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)
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}
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}
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}
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// MARK: -
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public extension UIColor {
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var asOWSColor: OWSColor {
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var red: CGFloat = 0
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var green: CGFloat = 0
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var blue: CGFloat = 0
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var alpha: CGFloat = 0
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self.getRed(&red, green: &green, blue: &blue, alpha: &alpha)
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return OWSColor(red: red.clamp01(), green: green.clamp01(), blue: blue.clamp01())
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}
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}
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