58 lines
2.8 KiB
Swift
58 lines
2.8 KiB
Swift
import UITextView_Placeholder
|
|
|
|
final class TextView : UITextView {
|
|
private let usesDefaultHeight: Bool
|
|
private let height: CGFloat
|
|
private let horizontalInset: CGFloat
|
|
private let verticalInset: CGFloat
|
|
|
|
override var contentSize: CGSize { didSet { centerTextVertically() } }
|
|
|
|
init(placeholder: String, usesDefaultHeight: Bool = true, customHeight: CGFloat? = nil, customHorizontalInset: CGFloat? = nil, customVerticalInset: CGFloat? = nil) {
|
|
self.usesDefaultHeight = usesDefaultHeight
|
|
self.height = customHeight ?? Values.textFieldHeight
|
|
self.horizontalInset = customHorizontalInset ?? (isIPhone5OrSmaller ? Values.mediumSpacing : Values.largeSpacing)
|
|
self.verticalInset = customVerticalInset ?? (isIPhone5OrSmaller ? Values.smallSpacing : Values.largeSpacing)
|
|
super.init(frame: CGRect.zero, textContainer: nil)
|
|
self.placeholder = placeholder
|
|
setUpStyle()
|
|
}
|
|
|
|
override init(frame: CGRect, textContainer: NSTextContainer?) {
|
|
preconditionFailure("Use init(placeholder:) instead.")
|
|
}
|
|
|
|
required init?(coder: NSCoder) {
|
|
preconditionFailure("Use init(placeholder:) instead.")
|
|
}
|
|
|
|
private func setUpStyle() {
|
|
showsHorizontalScrollIndicator = false
|
|
showsVerticalScrollIndicator = false
|
|
let placeholder = NSMutableAttributedString(string: self.placeholder!)
|
|
self.placeholder = nil
|
|
let placeholderColor = Colors.text.withAlphaComponent(Values.unimportantElementOpacity)
|
|
placeholder.addAttribute(.foregroundColor, value: placeholderColor, range: NSRange(location: 0, length: placeholder.length))
|
|
placeholder.addAttribute(.font, value: UIFont.systemFont(ofSize: Values.smallFontSize), range: NSRange(location: 0, length: placeholder.length))
|
|
attributedPlaceholder = placeholder
|
|
backgroundColor = .clear
|
|
textColor = Colors.text
|
|
font = .systemFont(ofSize: Values.smallFontSize)
|
|
tintColor = Colors.accent
|
|
keyboardAppearance = isLightMode ? .light : .dark
|
|
if usesDefaultHeight {
|
|
set(.height, to: height)
|
|
}
|
|
layer.borderColor = isLightMode ? Colors.text.cgColor : Colors.border.withAlphaComponent(Values.textFieldBorderOpacity).cgColor
|
|
layer.borderWidth = Values.borderThickness
|
|
layer.cornerRadius = Values.textFieldCornerRadius
|
|
let horizontalInset = usesDefaultHeight ? self.horizontalInset : Values.mediumSpacing
|
|
textContainerInset = UIEdgeInsets(top: 0, leading: horizontalInset, bottom: 0, trailing: horizontalInset)
|
|
}
|
|
|
|
private func centerTextVertically() {
|
|
let topInset = max(0, (bounds.size.height - contentSize.height * zoomScale) / 2)
|
|
contentInset = UIEdgeInsets(top: topInset, left: 0, bottom: 0, right: 0)
|
|
}
|
|
}
|