86 lines
2.9 KiB
Swift
Executable File
86 lines
2.9 KiB
Swift
Executable File
// (c) 2018 and onwards Sindre Sorhus (MIT License).
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// ====================
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// This code is released under the MIT license (SPDX-License-Identifier: MIT)
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import SwiftUI
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@available(macOS 10.15, *)
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public extension SSPreferences {
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/**
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Function builder for `Preferences` components used in order to restrict types of child views to be of type `Section`.
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*/
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@resultBuilder
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enum SectionBuilder {
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public static func buildBlock(_ sections: Section...) -> [Section] {
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sections
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}
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}
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/**
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A view which holds `Preferences.Section` views and does all the alignment magic similar to `NSGridView` from AppKit.
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*/
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struct Container: View {
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private let sectionBuilder: () -> [Section]
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private let contentWidth: Double
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private let minimumLabelWidth: Double
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@State private var maximumLabelWidth = 0.0
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/**
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Creates an instance of container component, which handles layout of stacked `Preferences.Section` views.
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Custom alignment requires content width to be specified beforehand.
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- Parameters:
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- contentWidth: A fixed width of the container's content (excluding paddings).
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- minimumLabelWidth: A minimum width for labels within this container. By default, it will fit to the largest label.
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- builder: A view builder that creates `Preferences.Section`'s of this container.
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*/
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public init(
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contentWidth: Double,
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minimumLabelWidth: Double = 0,
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@SectionBuilder builder: @escaping () -> [Section]
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) {
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sectionBuilder = builder
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self.contentWidth = contentWidth
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self.minimumLabelWidth = minimumLabelWidth
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}
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public var body: some View {
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let sections = sectionBuilder()
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let labelWidth = max(minimumLabelWidth, maximumLabelWidth)
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return VStack(alignment: .preferenceSectionLabel) {
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ForEach(0 ..< sections.count, id: \.self) { index in
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if sections[index].label != nil {
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sections[index].bodyLimited(rightPaneWidth: contentWidth - labelWidth)
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} else {
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sections[index]
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.alignmentGuide(.preferenceSectionLabel) { $0[.leading] + labelWidth }
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}
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if sections[index].bottomDivider, index < sections.count - 1 {
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Divider()
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.frame(height: 10)
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.alignmentGuide(.preferenceSectionLabel) { $0[.leading] + labelWidth }
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}
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}
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}
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.modifier(Section.LabelWidthModifier(maximumWidth: $maximumLabelWidth))
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.frame(width: contentWidth, alignment: .leading)
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.padding(.vertical, 20)
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.padding(.horizontal, 30)
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}
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}
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}
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/// Extension with custom alignment guide for section title labels.
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@available(macOS 10.15, *)
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extension HorizontalAlignment {
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private enum PreferenceSectionLabelAlignment: AlignmentID {
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static func defaultValue(in context: ViewDimensions) -> CGFloat {
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context[HorizontalAlignment.leading]
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}
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}
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static let preferenceSectionLabel = HorizontalAlignment(PreferenceSectionLabelAlignment.self)
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}
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