Channel premium gifts

submodules/PremiumUI/Sources/CreateGiveawayHeaderItem.swift

@@ -0,0 +1,169 @@
+import Foundation
+import UIKit
+import Display
+import AsyncDisplayKit
+import SwiftSignalKit
+import TelegramPresentationData
+import ItemListUI
+import PresentationDataUtils
+import Markdown
+import ComponentFlow
+
+final class CreateGiveawayHeaderItem: ListViewItem, ItemListItem {
+    let theme: PresentationTheme
+    let title: String
+    let text: String
+    let sectionId: ItemListSectionId
+    
+    init(theme: PresentationTheme, title: String, text: String, sectionId: ItemListSectionId) {
+        self.theme = theme
+        self.title = title
+        self.text = text
+        self.sectionId = sectionId
+    }
+    
+    func nodeConfiguredForParams(async: @escaping (@escaping () -> Void) -> Void, params: ListViewItemLayoutParams, synchronousLoads: Bool, previousItem: ListViewItem?, nextItem: ListViewItem?, completion: @escaping (ListViewItemNode, @escaping () -> (Signal<Void, NoError>?, (ListViewItemApply) -> Void)) -> Void) {
+        async {
+            let node = CreateGiveawayHeaderItemNode()
+            let (layout, apply) = node.asyncLayout()(self, params, itemListNeighbors(item: self, topItem: previousItem as? ItemListItem, bottomItem: nextItem as? ItemListItem))
+            
+            node.contentSize = layout.contentSize
+            node.insets = layout.insets
+            
+            Queue.mainQueue().async {
+                completion(node, {
+                    return (nil, { _ in apply() })
+                })
+            }
+        }
+    }
+    
+    func updateNode(async: @escaping (@escaping () -> Void) -> Void, node: @escaping () -> ListViewItemNode, params: ListViewItemLayoutParams, previousItem: ListViewItem?, nextItem: ListViewItem?, animation: ListViewItemUpdateAnimation, completion: @escaping (ListViewItemNodeLayout, @escaping (ListViewItemApply) -> Void) -> Void) {
+        Queue.mainQueue().async {
+            guard let nodeValue = node() as? CreateGiveawayHeaderItemNode else {
+                assertionFailure()
+                return
+            }
+            
+            let makeLayout = nodeValue.asyncLayout()
+            
+            async {
+                let (layout, apply) = makeLayout(self, params, itemListNeighbors(item: self, topItem: previousItem as? ItemListItem, bottomItem: nextItem as? ItemListItem))
+                Queue.mainQueue().async {
+                    completion(layout, { _ in
+                        apply()
+                    })
+                }
+            }
+        }
+    }
+}
+
+private let titleFont = Font.semibold(20.0)
+private let textFont = Font.regular(15.0)
+
+class CreateGiveawayHeaderItemNode: ListViewItemNode {
+    private let titleNode: TextNode
+    private let textNode: TextNode
+    
+    private var hostView: ComponentHostView<Empty>?
+    
+    private var params: (AnyComponent<Empty>, CGSize, ListViewItemNodeLayout)?
+        
+    private var item: CreateGiveawayHeaderItem?
+    
+    init() {
+        self.titleNode = TextNode()
+        self.titleNode.isUserInteractionEnabled = false
+        self.titleNode.contentMode = .left
+        self.titleNode.contentsScale = UIScreen.main.scale
+        
+        self.textNode = TextNode()
+        self.textNode.isUserInteractionEnabled = false
+        self.textNode.contentMode = .left
+        self.textNode.contentsScale = UIScreen.main.scale
+        
+        super.init(layerBacked: false, dynamicBounce: false)
+        
+        self.addSubnode(self.titleNode)
+        self.addSubnode(self.textNode)
+    }
+    
+    override func didLoad() {
+        super.didLoad()
+        
+        let hostView = ComponentHostView<Empty>()
+        self.hostView = hostView
+        self.view.addSubview(hostView)
+        
+        if let (component, containerSize, layout) = self.params {
+            let size = hostView.update(
+                transition: .immediate,
+                component: component,
+                environment: {},
+                containerSize: containerSize
+            )
+            hostView.frame = CGRect(origin: CGPoint(x: floorToScreenPixels((layout.size.width - size.width) / 2.0), y: -121.0), size: size)
+        }
+    }
+    
+    func asyncLayout() -> (_ item: CreateGiveawayHeaderItem, _ params: ListViewItemLayoutParams, _ neighbors: ItemListNeighbors) -> (ListViewItemNodeLayout, () -> Void) {
+        let makeTitleLayout = TextNode.asyncLayout(self.titleNode)
+        let makeTextLayout = TextNode.asyncLayout(self.textNode)
+        
+        return { item, params, neighbors in
+            let topInset: CGFloat = 2.0
+            let leftInset: CGFloat = 24.0 + params.leftInset
+        
+            let attributedTitle = NSAttributedString(string: item.title, font: titleFont, textColor: item.theme.list.itemPrimaryTextColor, paragraphAlignment: .center)
+            let attributedText = NSAttributedString(string: item.text, font: textFont, textColor: item.theme.list.freeTextColor, paragraphAlignment: .center)
+                        
+            let (titleLayout, titleApply) = makeTitleLayout(TextNodeLayoutArguments(attributedString: attributedTitle, backgroundColor: nil, maximumNumberOfLines: 0, truncationType: .end, constrainedSize: CGSize(width: params.width - leftInset * 2.0, height: CGFloat.greatestFiniteMagnitude), alignment: .center, cutout: nil, insets: UIEdgeInsets()))
+            
+            let (textLayout, textApply) = makeTextLayout(TextNodeLayoutArguments(attributedString: attributedText, backgroundColor: nil, maximumNumberOfLines: 0, truncationType: .end, constrainedSize: CGSize(width: params.width - leftInset * 2.0, height: CGFloat.greatestFiniteMagnitude), alignment: .center, cutout: nil, insets: UIEdgeInsets()))
+            
+            let contentSize = CGSize(width: params.width, height: topInset + titleLayout.size.height + textLayout.size.height + 80.0)
+            
+            let insets = itemListNeighborsGroupedInsets(neighbors, params)
+            let layout = ListViewItemNodeLayout(contentSize: contentSize, insets: insets)
+            
+            return (layout, { [weak self] in
+                if let strongSelf = self {
+                    strongSelf.item = item
+                    
+                    let component = AnyComponent(PremiumStarComponent(isIntro: true, isVisible: true, hasIdleAnimations: true))
+                    let containerSize = CGSize(width: min(414.0, layout.size.width), height: 220.0)
+                    
+                    if let hostView = strongSelf.hostView {
+                        let size = hostView.update(
+                            transition: .immediate,
+                            component: component,
+                            environment: {},
+                            containerSize: containerSize
+                        )
+                        hostView.frame = CGRect(origin: CGPoint(x: floorToScreenPixels((layout.size.width - size.width) / 2.0), y: -121.0), size: size)
+                    }
+                    
+                    var origin: CGFloat = 78.0
+                    let _ = titleApply()
+                    strongSelf.titleNode.frame = CGRect(origin: CGPoint(x: floor((layout.size.width - titleLayout.size.width) / 2.0), y: origin), size: titleLayout.size)
+                    
+                    origin += titleLayout.size.height + 10.0
+                    
+                    let _ = textApply()
+                    strongSelf.textNode.frame = CGRect(origin: CGPoint(x: floor((layout.size.width - textLayout.size.width) / 2.0), y: origin), size: textLayout.size)
+                    
+                    strongSelf.params = (component, containerSize, layout)
+                }
+            })
+        }
+    }
+    
+    override func animateInsertion(_ currentTimestamp: Double, duration: Double, short: Bool) {
+        self.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.4)
+    }
+    
+    override func animateRemoved(_ currentTimestamp: Double, duration: Double) {
+        self.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.15, removeOnCompletion: false)
+    }
+}