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80 lines
2.5 KiB
Swift
80 lines
2.5 KiB
Swift
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import SwiftUI
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struct PrimaryActionButtonStyle: ButtonStyle {
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@Environment(\.theme) private var theme
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@Environment(\.isEnabled) private var isEnabled
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var customColor: Color?
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private var fontColor: Color {
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// Always white unless disabled with a dark theme.
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.white.opacity(theme.isDark && !isEnabled ? 0.3 : 1.0)
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}
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private var backgroundColor: Color {
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customColor ?? theme.colors.accent
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}
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func makeBody(configuration: Self.Configuration) -> some View {
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configuration.label
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.padding(12.0)
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.frame(maxWidth: .infinity)
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.foregroundColor(fontColor)
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.font(theme.fonts.body)
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.background(backgroundColor.opacity(backgroundOpacity(when: configuration.isPressed)))
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.cornerRadius(8.0)
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}
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func backgroundOpacity(when isPressed: Bool) -> CGFloat {
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guard isEnabled else { return 0.3 }
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return isPressed ? 0.6 : 1.0
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}
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}
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struct PrimaryActionButtonStyle_Previews: PreviewProvider {
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static var buttons: some View {
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Group {
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VStack {
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Button("Enabled") { }
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.buttonStyle(PrimaryActionButtonStyle())
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Button("Disabled") { }
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.buttonStyle(PrimaryActionButtonStyle())
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.disabled(true)
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Button { } label: {
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Text("Clear BG")
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.foregroundColor(.red)
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}
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.buttonStyle(PrimaryActionButtonStyle(customColor: .clear))
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Button("Red BG") { }
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.buttonStyle(PrimaryActionButtonStyle(customColor: .red))
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}
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.padding()
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}
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}
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static var previews: some View {
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buttons
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.theme(.light).preferredColorScheme(.light)
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buttons
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.theme(.dark).preferredColorScheme(.dark)
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}
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}
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