mirror of https://github.com/oxen-io/session-ios
Make new private chat screen use a UITextView
nielsandriesse
5 years ago
parent
b5f5ffec7d
commit
cd761d2687
@ -0,0 +1,57 @@
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import UITextView_Placeholder
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final class TextView : UITextView {
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private let usesDefaultHeight: Bool
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private let height: CGFloat
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private let horizontalInset: CGFloat
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private let verticalInset: CGFloat
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override var contentSize: CGSize { didSet { centerTextVertically() } }
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init(placeholder: String, usesDefaultHeight: Bool = true, customHeight: CGFloat? = nil, customHorizontalInset: CGFloat? = nil, customVerticalInset: CGFloat? = nil) {
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self.usesDefaultHeight = usesDefaultHeight
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self.height = customHeight ?? Values.textFieldHeight
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self.horizontalInset = customHorizontalInset ?? (isIPhone5OrSmaller ? Values.mediumSpacing : Values.largeSpacing)
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self.verticalInset = customVerticalInset ?? (isIPhone5OrSmaller ? Values.smallSpacing : Values.largeSpacing)
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super.init(frame: CGRect.zero, textContainer: nil)
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self.placeholder = placeholder
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setUpStyle()
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}
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override init(frame: CGRect, textContainer: NSTextContainer?) {
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preconditionFailure("Use init(placeholder:) instead.")
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}
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required init?(coder: NSCoder) {
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preconditionFailure("Use init(placeholder:) instead.")
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}
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private func setUpStyle() {
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showsHorizontalScrollIndicator = false
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showsVerticalScrollIndicator = false
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let placeholder = NSMutableAttributedString(string: self.placeholder!)
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self.placeholder = nil
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let placeholderColor = Colors.text.withAlphaComponent(Values.unimportantElementOpacity)
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placeholder.addAttribute(.foregroundColor, value: placeholderColor, range: NSRange(location: 0, length: placeholder.length))
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placeholder.addAttribute(.font, value: UIFont.systemFont(ofSize: Values.smallFontSize), range: NSRange(location: 0, length: placeholder.length))
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attributedPlaceholder = placeholder
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backgroundColor = .clear
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textColor = Colors.text
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font = .systemFont(ofSize: Values.smallFontSize)
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tintColor = Colors.accent
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keyboardAppearance = isLightMode ? .light : .dark
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if usesDefaultHeight {
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set(.height, to: height)
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}
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layer.borderColor = isLightMode ? Colors.text.cgColor : Colors.border.withAlphaComponent(Values.textFieldBorderOpacity).cgColor
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layer.borderWidth = Values.borderThickness
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layer.cornerRadius = Values.textFieldCornerRadius
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let horizontalInset = usesDefaultHeight ? self.horizontalInset : Values.mediumSpacing
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textContainerInset = UIEdgeInsets(top: 0, leading: horizontalInset, bottom: 0, trailing: horizontalInset)
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}
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private func centerTextVertically() {
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let topInset = max(0, (bounds.size.height - contentSize.height * zoomScale) / 2)
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contentInset = UIEdgeInsets(top: topInset, left: 0, bottom: 0, right: 0)
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}
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}
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