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https://github.com/Swiftgram/Telegram-iOS.git
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104 lines
4.5 KiB
Swift
104 lines
4.5 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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import TelegramPresentationData
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import ItemListUI
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import PresentationDataUtils
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import AnimatedStickerNode
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import TelegramAnimatedStickerNode
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import AccountContext
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final class AttachmentFileEmptyStateItem: ItemListControllerEmptyStateItem {
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let context: AccountContext
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let theme: PresentationTheme
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let strings: PresentationStrings
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init(context: AccountContext, theme: PresentationTheme, strings: PresentationStrings) {
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self.context = context
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self.theme = theme
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self.strings = strings
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}
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func isEqual(to: ItemListControllerEmptyStateItem) -> Bool {
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if let item = to as? AttachmentFileEmptyStateItem {
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return self.theme === item.theme && self.strings === item.strings
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} else {
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return false
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}
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}
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func node(current: ItemListControllerEmptyStateItemNode?) -> ItemListControllerEmptyStateItemNode {
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if let current = current as? AttachmentFileEmptyStateItemNode {
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current.item = self
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return current
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} else {
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return AttachmentFileEmptyStateItemNode(item: self)
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}
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}
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}
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final class AttachmentFileEmptyStateItemNode: ItemListControllerEmptyStateItemNode {
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private var animationNode: AnimatedStickerNode
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private let textNode: ASTextNode
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private var validLayout: (ContainerViewLayout, CGFloat)?
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var item: AttachmentFileEmptyStateItem {
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didSet {
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self.updateThemeAndStrings(theme: self.item.theme, strings: self.item.strings)
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if let (layout, navigationHeight) = self.validLayout {
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self.updateLayout(layout: layout, navigationBarHeight: navigationHeight, transition: .immediate)
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}
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}
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}
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init(item: AttachmentFileEmptyStateItem) {
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self.item = item
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self.animationNode = AnimatedStickerNode()
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self.animationNode.setup(source: AnimatedStickerNodeLocalFileSource(name: "Files"), width: 320, height: 320, playbackMode: .loop, mode: .direct(cachePathPrefix: nil))
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self.animationNode.visibility = true
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self.textNode = ASTextNode()
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self.textNode.isUserInteractionEnabled = false
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self.textNode.lineSpacing = 0.1
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self.textNode.textAlignment = .center
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super.init()
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self.isUserInteractionEnabled = false
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self.addSubnode(self.animationNode)
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self.addSubnode(self.textNode)
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self.updateThemeAndStrings(theme: self.item.theme, strings: self.item.strings)
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}
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private func updateThemeAndStrings(theme: PresentationTheme, strings: PresentationStrings) {
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self.textNode.attributedText = NSAttributedString(string: strings.Attachment_FilesIntro, font: Font.regular(15.0), textColor: theme.list.freeTextColor, paragraphAlignment: .center)
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}
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override func updateLayout(layout: ContainerViewLayout, navigationBarHeight: CGFloat, transition: ContainedViewLayoutTransition) {
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self.validLayout = (layout, navigationBarHeight)
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var insets = layout.insets(options: [])
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insets.top += navigationBarHeight - 92.0
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let imageSpacing: CGFloat = 12.0
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let imageSize = CGSize(width: 144.0, height: 144.0)
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let imageHeight = layout.size.width < layout.size.height ? imageSize.height + imageSpacing : 0.0
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self.animationNode.frame = CGRect(origin: CGPoint(x: floor((layout.size.width - imageSize.width) / 2.0), y: -10.0), size: imageSize)
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self.animationNode.updateLayout(size: imageSize)
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let textSize = self.textNode.measure(CGSize(width: layout.size.width - layout.safeInsets.left - layout.safeInsets.right - 70.0, height: max(1.0, layout.size.height - insets.top - insets.bottom)))
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let totalHeight = imageHeight + textSize.height
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let topOffset = insets.top + floor((layout.size.height - insets.top - insets.bottom - totalHeight) / 2.0)
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transition.updateAlpha(node: self.animationNode, alpha: imageHeight > 0.0 ? 1.0 : 0.0)
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transition.updateFrame(node: self.animationNode, frame: CGRect(origin: CGPoint(x: floor((layout.size.width - imageSize.width) / 2.0), y: topOffset), size: imageSize))
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transition.updateFrame(node: self.textNode, frame: CGRect(origin: CGPoint(x: layout.safeInsets.left + floor((layout.size.width - textSize.width - layout.safeInsets.left - layout.safeInsets.right) / 2.0), y: topOffset + imageHeight), size: textSize))
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}
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}
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