LeadKit/TIUIElements/Sources/Appearance/UIButton+AppearanceConfigur...

108 lines
4.7 KiB
Swift

//
// Copyright (c) 2023 Touch Instinct
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the Software), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
import TIUIKitCore
import UIKit
extension UIButton {
public func configureUIButton(appearance: BaseAppearance<some ViewLayout, some BaseContentLayout>,
for state: UIControl.State = .normal) {
appearance.textAttributes?
.configure(button: self,
with: title(for: state),
for: state)
if #available(iOS 15, *) {
var config = configuration ?? .plain()
configureInsets(in: &config,
contentInsets: appearance.contentLayout.contentInsets.replacingNan(with: .zero),
titleInsets: appearance.contentLayout.titleInsets.replacingNan(with: .zero),
imageInsets: appearance.contentLayout.imageInsets.replacingNan(with: .zero))
configuration = config
} else {
contentEdgeInsets = appearance.contentLayout.contentInsets.replacingNan(with: .zero)
titleEdgeInsets = appearance.contentLayout.titleInsets.replacingNan(with: .zero)
imageEdgeInsets = appearance.contentLayout.imageInsets.replacingNan(with: .zero)
}
super.configureUIView(appearance: appearance)
}
@available(iOS 15.0, *)
private func configureInsets(in config: inout UIButton.Configuration,
contentInsets: UIEdgeInsets,
titleInsets: UIEdgeInsets,
imageInsets: UIEdgeInsets) {
let topContentInset = contentInsets.top + titleInsets.top
let bottomContentInset = contentInsets.bottom + titleInsets.bottom
let fullLeadingContentInset = contentInsets.left + titleInsets.left
let fullTrailingContentInset = contentInsets.right + titleInsets.right
let hasNonEmptyImage = [
config.image,
currentImage
]
.compactMap { $0 }
.contains { !($0.size.width.isZero || $0.size.height.isZero) }
if hasNonEmptyImage {
let leadingContentInset: CGFloat
let trailingContentInset: CGFloat
let imagePadding: CGFloat
switch config.imagePlacement {
case .leading:
leadingContentInset = contentInsets.left
trailingContentInset = fullTrailingContentInset
imagePadding = titleInsets.left + imageInsets.right
case .trailing:
leadingContentInset = fullLeadingContentInset
trailingContentInset = contentInsets.right
imagePadding = titleInsets.right + imageInsets.left
default:
leadingContentInset = fullLeadingContentInset
trailingContentInset = fullTrailingContentInset
imagePadding = .zero
}
config.contentInsets = NSDirectionalEdgeInsets(top: topContentInset,
leading: leadingContentInset,
bottom: bottomContentInset,
trailing: trailingContentInset)
config.imagePadding = imagePadding
} else {
config.contentInsets = NSDirectionalEdgeInsets(top: topContentInset,
leading: fullLeadingContentInset,
bottom: bottomContentInset,
trailing: fullTrailingContentInset)
}
}
}