mirror of
https://github.com/Swiftgram/Telegram-iOS.git
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106 lines
3.9 KiB
Swift
106 lines
3.9 KiB
Swift
import Foundation
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import UIKit
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import AsyncDisplayKit
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import Display
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private func generateArrowImage(color: UIColor) -> UIImage? {
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return generateImage(CGSize(width: 8.0, height: 5.0), rotatedContext: { size, context in
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context.clear(CGRect(origin: CGPoint(), size: size))
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context.setFillColor(color.cgColor)
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context.beginPath()
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context.move(to: CGPoint())
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context.addLine(to: CGPoint(x: size.width, y: 0.0))
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context.addLine(to: CGPoint(x: size.width / 2.0, y: size.height))
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context.closePath()
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context.fillPath()
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})
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}
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final class ChatRecentActionsTitleView: UIView {
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private let button: HighlightTrackingButtonNode
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private let titleNode: TextNode
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private let arrowNode: ASImageNode
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var color: UIColor {
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didSet {
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if self.color != oldValue {
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self.setNeedsLayout()
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}
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}
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}
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var pressed: (() -> Void)?
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var title: String = "" {
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didSet {
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if self.title != oldValue {
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self.setNeedsLayout()
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}
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}
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}
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init(color: UIColor) {
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self.color = color
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self.button = HighlightTrackingButtonNode()
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self.titleNode = TextNode()
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self.titleNode.isUserInteractionEnabled = false
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self.titleNode.displaysAsynchronously = false
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self.arrowNode = ASImageNode()
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self.arrowNode.isLayerBacked = true
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self.arrowNode.displaysAsynchronously = false
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self.arrowNode.displayWithoutProcessing = true
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self.arrowNode.image = generateArrowImage(color: color)
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super.init(frame: CGRect())
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self.addSubnode(self.titleNode)
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self.addSubnode(self.arrowNode)
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self.addSubnode(self.button)
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self.button.addTarget(self, action: #selector(self.buttonPressed), forControlEvents: [.touchUpInside])
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self.button.highligthedChanged = { [weak self] highlighted in
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if let strongSelf = self {
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if highlighted {
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strongSelf.titleNode.layer.removeAnimation(forKey: "opacity")
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strongSelf.arrowNode.layer.removeAnimation(forKey: "opacity")
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strongSelf.titleNode.alpha = 0.4
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strongSelf.arrowNode.alpha = 0.4
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} else {
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strongSelf.titleNode.alpha = 1.0
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strongSelf.arrowNode.alpha = 1.0
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strongSelf.titleNode.layer.animateAlpha(from: 0.4, to: 1.0, duration: 0.2)
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strongSelf.arrowNode.layer.animateAlpha(from: 0.4, to: 1.0, duration: 0.2)
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}
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}
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}
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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let size = self.bounds.size
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self.button.frame = CGRect(origin: CGPoint(), size: size)
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let makeLayout = TextNode.asyncLayout(self.titleNode)
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let (titleLayout, titleApply) = makeLayout(TextNodeLayoutArguments(attributedString: NSAttributedString(string: self.title, font: Font.semibold(17.0), textColor: self.color), backgroundColor: nil, maximumNumberOfLines: 1, truncationType: .end, constrainedSize: size, alignment: .center, lineSpacing: 0.0, cutout: nil, insets: UIEdgeInsets()))
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let titleFrame = CGRect(origin: CGPoint(x: floor((size.width - titleLayout.size.width) / 2.0), y: floor((size.height - titleLayout.size.height) / 2.0)), size: titleLayout.size)
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self.titleNode.frame = titleFrame
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let _ = titleApply()
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if let image = self.arrowNode.image {
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self.arrowNode.frame = CGRect(origin: CGPoint(x: titleFrame.maxX + 3.0, y: titleFrame.minY + 9.0), size: image.size)
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}
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}
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@objc func buttonPressed() {
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self.pressed?()
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}
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}
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