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NavigationTabStyle.swift
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NavigationTabStyle.swift
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/*
* Backpack - Skyscanner's Design System
*
* Copyright 2018 Skyscanner Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import SwiftUI
struct NavigationTabStyle: ButtonStyle {
let style: BPKNavigationTabGroup.Style
let selected: Bool
func makeBody(configuration: Self.Configuration) -> some View {
configuration.label
.frame(minHeight: .xl)
.fixedSize(horizontal: true, vertical: false)
.background(backgroundColor(configuration.isPressed))
.foregroundColor(foregroundColor(configuration.isPressed))
.outline(outlineColor(configuration.isPressed), cornerRadius: .lg)
.clipShape(RoundedRectangle(cornerRadius: .lg))
.if(!BPKFont.enableDynamicType, transform: {
$0.sizeCategory(.large)
})
}
private func outlineColor(_ isPressed: Bool) -> BPKColor {
switch style {
case .`default`:
if selected || isPressed {
return .coreAccentColor
}
return .lineColor
case .onDark:
if selected {
return .coreAccentColor
} else if isPressed {
return .chipOnDarkPressedStrokeColor
} else {
return .lineOnDarkColor
}
}
}
private func backgroundColor(_ isPressed: Bool) -> BPKColor {
return selected ? .coreAccentColor : .clear
}
private func foregroundColor(_ isPressed: Bool) -> BPKColor {
if selected {
return .textPrimaryInverseColor
} else if isPressed {
return style == .default ? .buttonLinkPressedForegroundColor : .buttonLinkOnDarkPressedForegroundColor
} else {
return style == .default ? .textPrimaryColor : .textOnDarkColor
}
}
}