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Peter
170
TelegramUI/ChatMessageTextBubbleContentNode.swift
Normal file
170
TelegramUI/ChatMessageTextBubbleContentNode.swift
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import Foundation
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import AsyncDisplayKit
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import Display
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import TelegramCore
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private let messageFont: UIFont = UIFont.systemFont(ofSize: 17.0)
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private let messageBoldFont: UIFont = UIFont.boldSystemFont(ofSize: 17.0)
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class ChatMessageTextBubbleContentNode: ChatMessageBubbleContentNode {
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private let textNode: TextNode
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private let statusNode: ChatMessageDateAndStatusNode
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required init() {
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self.textNode = TextNode()
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self.statusNode = ChatMessageDateAndStatusNode()
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super.init()
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self.textNode.isLayerBacked = true
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self.textNode.contentMode = .topLeft
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self.textNode.contentsScale = UIScreenScale
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self.textNode.displaysAsynchronously = true
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self.addSubnode(self.textNode)
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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 asyncLayoutContent() -> (_ item: ChatMessageItem, _ layoutConstants: ChatMessageItemLayoutConstants, _ position: ChatMessageBubbleContentPosition, _ constrainedSize: CGSize) -> (CGFloat, (CGSize) -> (CGFloat, (CGFloat) -> (CGSize, () -> Void))) {
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let textLayout = TextNode.asyncLayout(self.textNode)
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let statusLayout = self.statusNode.asyncLayout()
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return { item, layoutConstants, position, _ in
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return (CGFloat.greatestFiniteMagnitude, { constrainedSize in
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let message = item.message
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let incoming = item.account.peerId != message.author?.id
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let horizontalInset = layoutConstants.text.bubbleInsets.left + layoutConstants.text.bubbleInsets.right
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let textConstrainedSize = CGSize(width: constrainedSize.width - horizontalInset, height: constrainedSize.height)
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var t = Int(item.message.timestamp)
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var timeinfo = tm()
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localtime_r(&t, &timeinfo)
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let dateText = String(format: "%02d:%02d", arguments: [Int(timeinfo.tm_hour), Int(timeinfo.tm_min)])
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//let dateText = "\(message.id.id)"
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let statusType: ChatMessageDateAndStatusType?
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if case .None = position.bottom {
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if incoming {
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statusType = .BubbleIncoming
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} else {
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if message.flags.contains(.Failed) {
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statusType = .BubbleOutgoing(.Failed)
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} else if message.flags.contains(.Unsent) {
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statusType = .BubbleOutgoing(.Sending)
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} else {
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statusType = .BubbleOutgoing(.Sent(read: true))
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}
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}
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} else {
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statusType = nil
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}
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var statusSize: CGSize?
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var statusApply: (() -> Void)?
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if let statusType = statusType {
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let (size, apply) = statusLayout(dateText, statusType, textConstrainedSize)
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statusSize = size
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statusApply = apply
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}
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let attributedText: NSAttributedString
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var entities: TextEntitiesMessageAttribute?
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for attribute in item.message.attributes {
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if let attribute = attribute as? TextEntitiesMessageAttribute {
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entities = attribute
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break
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}
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}
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if let entities = entities {
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let string = NSMutableAttributedString(string: message.text, attributes: [NSFontAttributeName: messageFont, NSForegroundColorAttributeName: UIColor.black])
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for entity in entities.entities {
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switch entity.type {
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case .Url:
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string.addAttribute(NSForegroundColorAttributeName, value: UIColor(0x004bad), range: NSRange(location: entity.range.lowerBound, length: entity.range.upperBound - entity.range.lowerBound))
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case .Bold:
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string.addAttribute(NSFontAttributeName, value: messageBoldFont, range: NSRange(location: entity.range.lowerBound, length: entity.range.upperBound - entity.range.lowerBound))
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default:
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break
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}
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}
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attributedText = string
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} else {
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attributedText = NSAttributedString(string: message.text, font: messageFont, textColor: UIColor.black)
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}
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let (textLayout, textApply) = textLayout(attributedText, nil, 0, .end, textConstrainedSize, nil)
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var textFrame = CGRect(origin: CGPoint(), size: textLayout.size)
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let textSize = textLayout.size
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var statusFrame: CGRect?
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if let statusSize = statusSize {
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var frame = CGRect(origin: CGPoint(), size: statusSize)
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let trailingLineWidth = textLayout.trailingLineWidth
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if textSize.width - trailingLineWidth >= statusSize.width {
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frame.origin = CGPoint(x: textFrame.maxX - statusSize.width, y: textFrame.maxY - statusSize.height)
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} else if trailingLineWidth + statusSize.width < textConstrainedSize.width {
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frame.origin = CGPoint(x: textFrame.minX + trailingLineWidth, y: textFrame.maxY - statusSize.height)
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} else {
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frame.origin = CGPoint(x: textFrame.maxX - statusSize.width, y: textFrame.maxY)
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}
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statusFrame = frame
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}
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textFrame = textFrame.offsetBy(dx: layoutConstants.text.bubbleInsets.left, dy: layoutConstants.text.bubbleInsets.top)
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statusFrame = statusFrame?.offsetBy(dx: layoutConstants.text.bubbleInsets.left, dy: layoutConstants.text.bubbleInsets.top)
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var boundingSize: CGSize
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if let statusFrame = statusFrame {
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boundingSize = textFrame.union(statusFrame).size
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} else {
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boundingSize = textFrame.size
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}
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boundingSize.width += layoutConstants.text.bubbleInsets.left + layoutConstants.text.bubbleInsets.right
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boundingSize.height += layoutConstants.text.bubbleInsets.top + layoutConstants.text.bubbleInsets.bottom
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return (boundingSize.width, { boundingWidth in
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var adjustedStatusFrame: CGRect?
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if let statusFrame = statusFrame {
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adjustedStatusFrame = CGRect(origin: CGPoint(x: boundingWidth - statusFrame.size.width - layoutConstants.text.bubbleInsets.right, y: statusFrame.origin.y), size: statusFrame.size)
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}
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return (boundingSize, { [weak self] in
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if let strongSelf = self {
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let _ = textApply()
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if let statusApply = statusApply, let adjustedStatusFrame = adjustedStatusFrame {
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strongSelf.statusNode.frame = adjustedStatusFrame
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statusApply()
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if strongSelf.statusNode.supernode == nil {
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strongSelf.addSubnode(strongSelf.statusNode)
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}
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} else if strongSelf.statusNode.supernode != nil {
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strongSelf.statusNode.removeFromSupernode()
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}
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strongSelf.textNode.frame = textFrame
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}
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})
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})
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})
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}
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}
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override func animateInsertion(_ currentTimestamp: Double, duration: Double) {
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self.textNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
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self.statusNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
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}
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override func animateAdded(_ currentTimestamp: Double, duration: Double) {
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self.textNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
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self.statusNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
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}
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}
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