mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
84 lines
4.2 KiB
Swift
84 lines
4.2 KiB
Swift
import Foundation
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import UIKit
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import Display
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import AsyncDisplayKit
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import TelegramCore
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import SyncCore
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import TelegramPresentationData
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private let titleFont = Font.medium(16.0)
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private let textFont = Font.regular(15.0)
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final class ChatRecentActionsEmptyNode: ASDisplayNode {
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private var theme: PresentationTheme
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private var chatWallpaper: TelegramWallpaper
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private let backgroundNode: ASImageNode
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private let titleNode: TextNode
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private let textNode: TextNode
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private var layoutParams: CGSize?
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private var title: String = ""
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private var text: String = ""
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init(theme: PresentationTheme, chatWallpaper: TelegramWallpaper, chatBubbleCorners: PresentationChatBubbleCorners) {
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self.theme = theme
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self.chatWallpaper = chatWallpaper
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self.backgroundNode = ASImageNode()
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self.backgroundNode.isLayerBacked = true
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self.titleNode = TextNode()
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self.titleNode.isUserInteractionEnabled = false
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self.textNode = TextNode()
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self.textNode.isUserInteractionEnabled = false
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super.init()
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let graphics = PresentationResourcesChat.additionalGraphics(theme, wallpaper: chatWallpaper, bubbleCorners: chatBubbleCorners)
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self.backgroundNode.image = graphics.chatEmptyItemBackgroundImage
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self.addSubnode(self.backgroundNode)
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self.addSubnode(self.titleNode)
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self.addSubnode(self.textNode)
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}
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func updateLayout(size: CGSize, transition: ContainedViewLayoutTransition) {
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self.layoutParams = size
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let insets = UIEdgeInsets(top: 10.0, left: 10.0, bottom: 10.0, right: 10.0)
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let maxTextWidth = size.width - insets.left - insets.right - 18.0 * 2.0
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let makeTitleLayout = TextNode.asyncLayout(self.titleNode)
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let makeTextLayout = TextNode.asyncLayout(self.textNode)
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let serviceColor = serviceMessageColorComponents(theme: self.theme, wallpaper: self.chatWallpaper)
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let (titleLayout, titleApply) = makeTitleLayout(TextNodeLayoutArguments(attributedString: NSAttributedString(string: self.title, font: titleFont, textColor: serviceColor.primaryText), backgroundColor: nil, maximumNumberOfLines: 1, truncationType: .end, constrainedSize: CGSize(width: maxTextWidth, height: CGFloat.greatestFiniteMagnitude), alignment: .center, lineSpacing: 0.0, cutout: nil, insets: UIEdgeInsets()))
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let spacing: CGFloat = titleLayout.size.height.isZero ? 0.0 : 5.0
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let (textLayout, textApply) = makeTextLayout(TextNodeLayoutArguments(attributedString: NSAttributedString(string: self.text, font: textFont, textColor: serviceColor.primaryText), backgroundColor: nil, maximumNumberOfLines: 0, truncationType: .end, constrainedSize: CGSize(width: maxTextWidth, height: CGFloat.greatestFiniteMagnitude), alignment: .center, lineSpacing: 0.0, cutout: nil, insets: UIEdgeInsets()))
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let contentSize = CGSize(width: max(titleLayout.size.width, textLayout.size.width) + insets.left + insets.right, height: insets.top + insets.bottom + titleLayout.size.height + spacing + textLayout.size.height)
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let backgroundFrame = CGRect(origin: CGPoint(x: floor((size.width - contentSize.width) / 2.0), y: floor((size.height - contentSize.height) / 2.0)), size: contentSize)
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transition.updateFrame(node: self.backgroundNode, frame: backgroundFrame)
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transition.updateFrame(node: self.titleNode, frame: CGRect(origin: CGPoint(x: backgroundFrame.minX + floor((contentSize.width - titleLayout.size.width) / 2.0), y: backgroundFrame.minY + insets.top), size: titleLayout.size))
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transition.updateFrame(node: self.textNode, frame: CGRect(origin: CGPoint(x: backgroundFrame.minX + floor((contentSize.width - textLayout.size.width) / 2.0), y: backgroundFrame.minY + insets.top + titleLayout.size.height + spacing), size: textLayout.size))
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let _ = titleApply()
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let _ = textApply()
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}
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func setup(title: String, text: String) {
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if self.title != title || self.text != text {
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self.title = title
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self.text = text
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if let size = self.layoutParams {
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self.updateLayout(size: size, transition: .immediate)
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}
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}
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}
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}
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