mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
608 lines
28 KiB
Swift
608 lines
28 KiB
Swift
import Foundation
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import UIKit
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import AsyncDisplayKit
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import Postbox
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import Display
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import TelegramCore
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import SyncCore
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import SwiftSignalKit
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import TelegramPresentationData
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import AnimationUI
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import AppBundle
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import AccountContext
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private let deletedIcon = UIImage(bundleImageName: "Avatar/DeletedIcon")?.precomposed()
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private let savedMessagesIcon = generateTintedImage(image: UIImage(bundleImageName: "Avatar/SavedMessagesIcon"), color: .white)
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private let archivedChatsIcon = UIImage(bundleImageName: "Avatar/ArchiveAvatarIcon")?.precomposed()
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public func avatarPlaceholderFont(size: CGFloat) -> UIFont {
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return Font.with(size: size, design: .round, traits: [.bold])
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}
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public enum AvatarNodeClipStyle {
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case none
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case round
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}
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private class AvatarNodeParameters: NSObject {
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let theme: PresentationTheme?
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let accountPeerId: PeerId?
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let peerId: PeerId?
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let letters: [String]
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let font: UIFont
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let icon: AvatarNodeIcon
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let explicitColorIndex: Int?
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let hasImage: Bool
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let clipStyle: AvatarNodeClipStyle
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init(theme: PresentationTheme?, accountPeerId: PeerId?, peerId: PeerId?, letters: [String], font: UIFont, icon: AvatarNodeIcon, explicitColorIndex: Int?, hasImage: Bool, clipStyle: AvatarNodeClipStyle) {
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self.theme = theme
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self.accountPeerId = accountPeerId
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self.peerId = peerId
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self.letters = letters
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self.font = font
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self.icon = icon
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self.explicitColorIndex = explicitColorIndex
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self.hasImage = hasImage
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self.clipStyle = clipStyle
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super.init()
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}
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func withUpdatedHasImage(_ hasImage: Bool) -> AvatarNodeParameters {
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return AvatarNodeParameters(theme: self.theme, accountPeerId: self.accountPeerId, peerId: self.peerId, letters: self.letters, font: self.font, icon: self.icon, explicitColorIndex: self.explicitColorIndex, hasImage: hasImage, clipStyle: self.clipStyle)
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}
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}
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private func generateGradientFilledCircleImage(diameter: CGFloat, colors: NSArray) -> UIImage? {
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return generateImage(CGSize(width: diameter, height: diameter), contextGenerator: { size, context in
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let bounds = CGRect(origin: CGPoint(), size: size)
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context.clear(bounds)
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context.addEllipse(in: bounds)
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context.clip()
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var locations: [CGFloat] = [0.0, 1.0]
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let colorSpace = CGColorSpaceCreateDeviceRGB()
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let gradient = CGGradient(colorsSpace: colorSpace, colors: colors, locations: &locations)!
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context.drawLinearGradient(gradient, start: CGPoint(), end: CGPoint(x: 0.0, y: bounds.size.height), options: CGGradientDrawingOptions())
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})
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}
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private let grayscaleColors: NSArray = [
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UIColor(rgb: 0xb1b1b1).cgColor, UIColor(rgb: 0xcdcdcd).cgColor
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]
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private let savedMessagesColors: NSArray = [
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UIColor(rgb: 0x2a9ef1).cgColor, UIColor(rgb: 0x72d5fd).cgColor
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]
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private enum AvatarNodeState: Equatable {
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case empty
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case peerAvatar(PeerId, [String], TelegramMediaImageRepresentation?)
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case custom(letter: [String], explicitColorIndex: Int?)
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}
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private func ==(lhs: AvatarNodeState, rhs: AvatarNodeState) -> Bool {
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switch (lhs, rhs) {
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case (.empty, .empty):
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return true
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case let (.peerAvatar(lhsPeerId, lhsLetters, lhsPhotoRepresentations), .peerAvatar(rhsPeerId, rhsLetters, rhsPhotoRepresentations)):
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return lhsPeerId == rhsPeerId && lhsLetters == rhsLetters && lhsPhotoRepresentations == rhsPhotoRepresentations
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case let (.custom(lhsLetters, lhsIndex), .custom(rhsLetters, rhsIndex)):
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return lhsLetters == rhsLetters && lhsIndex == rhsIndex
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default:
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return false
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}
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}
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private enum AvatarNodeIcon: Equatable {
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case none
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case savedMessagesIcon
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case archivedChatsIcon(hiddenByDefault: Bool)
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case editAvatarIcon
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case deletedIcon
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}
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public enum AvatarNodeImageOverride: Equatable {
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case none
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case image(TelegramMediaImageRepresentation)
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case savedMessagesIcon
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case archivedChatsIcon(hiddenByDefault: Bool)
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case editAvatarIcon
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case deletedIcon
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}
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public enum AvatarNodeColorOverride {
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case blue
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}
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public final class AvatarEditOverlayNode: ASDisplayNode {
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override public init() {
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super.init()
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self.isOpaque = false
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self.displaysAsynchronously = true
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}
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@objc override public class func draw(_ bounds: CGRect, withParameters parameters: Any?, isCancelled: () -> Bool, isRasterizing: Bool) {
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assertNotOnMainThread()
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let context = UIGraphicsGetCurrentContext()!
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if !isRasterizing {
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context.setBlendMode(.copy)
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context.setFillColor(UIColor.clear.cgColor)
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context.fill(bounds)
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}
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context.beginPath()
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context.addEllipse(in: CGRect(x: 0.0, y: 0.0, width: bounds.size.width, height:
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bounds.size.height))
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context.clip()
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context.setFillColor(UIColor(rgb: 0x000000, alpha: 0.4).cgColor)
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context.fill(bounds)
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context.translateBy(x: bounds.size.width / 2.0, y: bounds.size.height / 2.0)
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context.scaleBy(x: 1.0, y: -1.0)
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context.translateBy(x: -bounds.size.width / 2.0, y: -bounds.size.height / 2.0)
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context.setBlendMode(.normal)
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if let editAvatarIcon = generateTintedImage(image: UIImage(bundleImageName: "Avatar/EditAvatarIcon"), color: .white) {
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context.draw(editAvatarIcon.cgImage!, in: CGRect(origin: CGPoint(x: floor((bounds.size.width - editAvatarIcon.size.width) / 2.0) + 0.5, y: floor((bounds.size.height - editAvatarIcon.size.height) / 2.0) + 1.0), size: editAvatarIcon.size))
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}
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}
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}
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public final class AvatarNode: ASDisplayNode {
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public static let gradientColors: [NSArray] = [
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[UIColor(rgb: 0xff516a).cgColor, UIColor(rgb: 0xff885e).cgColor],
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[UIColor(rgb: 0xffa85c).cgColor, UIColor(rgb: 0xffcd6a).cgColor],
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[UIColor(rgb: 0x665fff).cgColor, UIColor(rgb: 0x82b1ff).cgColor],
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[UIColor(rgb: 0x54cb68).cgColor, UIColor(rgb: 0xa0de7e).cgColor],
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[UIColor(rgb: 0x4acccd).cgColor, UIColor(rgb: 0x00fcfd).cgColor],
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[UIColor(rgb: 0x2a9ef1).cgColor, UIColor(rgb: 0x72d5fd).cgColor],
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[UIColor(rgb: 0xd669ed).cgColor, UIColor(rgb: 0xe0a2f3).cgColor],
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]
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public var font: UIFont {
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didSet {
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if oldValue !== font {
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if let parameters = self.parameters {
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self.parameters = AvatarNodeParameters(theme: parameters.theme, accountPeerId: parameters.accountPeerId, peerId: parameters.peerId, letters: parameters.letters, font: self.font, icon: parameters.icon, explicitColorIndex: parameters.explicitColorIndex, hasImage: parameters.hasImage, clipStyle: parameters.clipStyle)
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}
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if !self.displaySuspended {
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self.setNeedsDisplay()
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}
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}
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}
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}
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private var parameters: AvatarNodeParameters?
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private var theme: PresentationTheme?
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private var overrideImage: AvatarNodeImageOverride?
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public let imageNode: ImageNode
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private var animationBackgroundNode: ImageNode?
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private var animationNode: AnimationNode?
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public var editOverlayNode: AvatarEditOverlayNode?
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private let imageReadyDisposable = MetaDisposable()
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private var state: AvatarNodeState = .empty
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private let imageReady = Promise<Bool>(false)
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public var ready: Signal<Void, NoError> {
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let imageReady = self.imageReady
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return Signal { subscriber in
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return imageReady.get().start(next: { next in
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if next {
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subscriber.putCompletion()
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}
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})
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}
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}
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public init(font: UIFont) {
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self.font = font
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self.imageNode = ImageNode(enableHasImage: true)
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super.init()
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self.isOpaque = false
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self.displaysAsynchronously = true
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self.imageNode.isLayerBacked = true
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self.addSubnode(self.imageNode)
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}
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override public func didLoad() {
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super.didLoad()
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if #available(iOSApplicationExtension 11.0, iOS 11.0, *), !self.isLayerBacked {
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self.view.accessibilityIgnoresInvertColors = true
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}
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}
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override public var frame: CGRect {
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get {
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return super.frame
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} set(value) {
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let updateImage = !value.size.equalTo(super.frame.size)
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super.frame = value
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self.imageNode.frame = CGRect(origin: CGPoint(), size: value.size)
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self.editOverlayNode?.frame = self.imageNode.frame
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if updateImage && !self.displaySuspended {
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self.setNeedsDisplay()
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self.editOverlayNode?.setNeedsDisplay()
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}
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}
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}
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public func playArchiveAnimation() {
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guard let theme = self.theme else {
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return
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}
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var iconColor = theme.chatList.unpinnedArchiveAvatarColor.foregroundColor
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var backgroundColor = theme.chatList.unpinnedArchiveAvatarColor.backgroundColors.topColor
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let animationBackgroundNode = ASImageNode()
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animationBackgroundNode.frame = self.imageNode.frame
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if let overrideImage = self.overrideImage, case let .archivedChatsIcon(hiddenByDefault) = overrideImage {
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let backgroundColors: (UIColor, UIColor)
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if hiddenByDefault {
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backgroundColors = theme.chatList.unpinnedArchiveAvatarColor.backgroundColors.colors
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iconColor = theme.chatList.unpinnedArchiveAvatarColor.foregroundColor
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} else {
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backgroundColors = theme.chatList.pinnedArchiveAvatarColor.backgroundColors.colors
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iconColor = theme.chatList.pinnedArchiveAvatarColor.foregroundColor
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}
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let colors: NSArray = [backgroundColors.1.cgColor, backgroundColors.0.cgColor]
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backgroundColor = backgroundColors.1.mixedWith(backgroundColors.0, alpha: 0.5)
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animationBackgroundNode.image = generateGradientFilledCircleImage(diameter: self.imageNode.frame.width, colors: colors)
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}
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self.addSubnode(animationBackgroundNode)
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let animationNode = AnimationNode(animation: "anim_archiveAvatar", colors: ["box1.box1.Fill 1": iconColor, "box3.box3.Fill 1": iconColor, "box2.box2.Fill 1": backgroundColor], scale: 0.1653828)
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animationNode.completion = { [weak animationBackgroundNode, weak self] in
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self?.imageNode.isHidden = false
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animationBackgroundNode?.removeFromSupernode()
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}
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animationBackgroundNode.addSubnode(animationNode)
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animationBackgroundNode.layer.animateScale(from: 1.0, to: 1.07, duration: 0.12, removeOnCompletion: false, completion: { [weak animationBackgroundNode] finished in
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animationBackgroundNode?.layer.animateScale(from: 1.07, to: 1.0, duration: 0.12, removeOnCompletion: false)
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})
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if var size = animationNode.preferredSize() {
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size = CGSize(width: ceil(size.width), height: ceil(size.height))
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animationNode.frame = CGRect(x: floor((self.bounds.width - size.width) / 2.0), y: floor((self.bounds.height - size.height) / 2.0) + 1.0, width: size.width, height: size.height)
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animationNode.play()
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}
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self.imageNode.isHidden = true
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}
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public func setPeer(context: AccountContext, theme: PresentationTheme, peer: Peer?, authorOfMessage: MessageReference? = nil, overrideImage: AvatarNodeImageOverride? = nil, emptyColor: UIColor? = nil, clipStyle: AvatarNodeClipStyle = .round, synchronousLoad: Bool = false, displayDimensions: CGSize = CGSize(width: 60.0, height: 60.0)) {
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var synchronousLoad = synchronousLoad
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var representation: TelegramMediaImageRepresentation?
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var icon = AvatarNodeIcon.none
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if let overrideImage = overrideImage {
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switch overrideImage {
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case .none:
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representation = nil
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case let .image(image):
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representation = image
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synchronousLoad = false
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case .savedMessagesIcon:
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representation = nil
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icon = .savedMessagesIcon
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case let .archivedChatsIcon(hiddenByDefault):
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representation = nil
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icon = .archivedChatsIcon(hiddenByDefault: hiddenByDefault)
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case .editAvatarIcon:
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representation = peer?.smallProfileImage
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icon = .editAvatarIcon
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case .deletedIcon:
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representation = nil
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icon = .deletedIcon
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}
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} else if peer?.restrictionText(platform: "ios", contentSettings: context.currentContentSettings.with { $0 }) == nil {
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representation = peer?.smallProfileImage
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}
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let updatedState: AvatarNodeState = .peerAvatar(peer?.id ?? PeerId(namespace: 0, id: 0), peer?.displayLetters ?? [], representation)
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if updatedState != self.state || overrideImage != self.overrideImage || theme !== self.theme {
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self.state = updatedState
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self.overrideImage = overrideImage
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self.theme = theme
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let parameters: AvatarNodeParameters
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if let peer = peer, let signal = peerAvatarImage(account: context.account, peerReference: PeerReference(peer), authorOfMessage: authorOfMessage, representation: representation, displayDimensions: displayDimensions, emptyColor: emptyColor, synchronousLoad: synchronousLoad) {
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self.contents = nil
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self.displaySuspended = true
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self.imageReady.set(self.imageNode.ready)
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self.imageNode.setSignal(signal)
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if case .editAvatarIcon = icon {
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if self.editOverlayNode == nil {
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let editOverlayNode = AvatarEditOverlayNode()
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editOverlayNode.frame = self.imageNode.frame
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self.addSubnode(editOverlayNode)
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self.editOverlayNode = editOverlayNode
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}
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self.editOverlayNode?.isHidden = false
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} else {
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self.editOverlayNode?.isHidden = true
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}
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parameters = AvatarNodeParameters(theme: theme, accountPeerId: context.account.peerId, peerId: peer.id, letters: peer.displayLetters, font: self.font, icon: icon, explicitColorIndex: nil, hasImage: true, clipStyle: clipStyle)
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} else {
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self.imageReady.set(.single(true))
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self.displaySuspended = false
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if self.isNodeLoaded {
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self.imageNode.contents = nil
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}
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self.editOverlayNode?.isHidden = true
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parameters = AvatarNodeParameters(theme: theme, accountPeerId: context.account.peerId, peerId: peer?.id ?? PeerId(namespace: 0, id: 0), letters: peer?.displayLetters ?? [], font: self.font, icon: icon, explicitColorIndex: nil, hasImage: false, clipStyle: clipStyle)
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}
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if self.parameters == nil || self.parameters != parameters {
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self.parameters = parameters
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self.setNeedsDisplay()
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if synchronousLoad {
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self.recursivelyEnsureDisplaySynchronously(true)
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}
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}
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}
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}
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public func setCustomLetters(_ letters: [String], explicitColor: AvatarNodeColorOverride? = nil) {
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var explicitIndex: Int?
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if let explicitColor = explicitColor {
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switch explicitColor {
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case .blue:
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explicitIndex = 5
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}
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}
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let updatedState: AvatarNodeState = .custom(letter: letters, explicitColorIndex: explicitIndex)
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if updatedState != self.state {
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self.state = updatedState
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let parameters = AvatarNodeParameters(theme: nil, accountPeerId: nil, peerId: nil, letters: letters, font: self.font, icon: .none, explicitColorIndex: explicitIndex, hasImage: false, clipStyle: .round)
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self.displaySuspended = true
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self.contents = nil
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self.imageReady.set(.single(true))
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self.displaySuspended = false
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if self.parameters == nil || self.parameters != parameters {
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self.parameters = parameters
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self.setNeedsDisplay()
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}
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}
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}
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override public func drawParameters(forAsyncLayer layer: _ASDisplayLayer) -> NSObjectProtocol {
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return parameters ?? NSObject()
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}
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@objc override public class func draw(_ bounds: CGRect, withParameters parameters: Any?, isCancelled: () -> Bool, isRasterizing: Bool) {
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assertNotOnMainThread()
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let context = UIGraphicsGetCurrentContext()!
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if !isRasterizing {
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context.setBlendMode(.copy)
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context.setFillColor(UIColor.clear.cgColor)
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context.fill(bounds)
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}
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let colorIndex: Int
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if let parameters = parameters as? AvatarNodeParameters {
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if case .round = parameters.clipStyle {
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context.beginPath()
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context.addEllipse(in: CGRect(x: 0.0, y: 0.0, width: bounds.size.width, height:
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bounds.size.height))
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context.clip()
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}
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if let explicitColorIndex = parameters.explicitColorIndex {
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colorIndex = explicitColorIndex
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} else {
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if let accountPeerId = parameters.accountPeerId, let peerId = parameters.peerId {
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if peerId.namespace == -1 {
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colorIndex = -1
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} else {
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colorIndex = abs(Int(clamping: peerId.id))
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}
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} else {
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colorIndex = -1
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}
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}
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} else {
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colorIndex = -1
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}
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let colorsArray: NSArray
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var iconColor = UIColor.white
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if let parameters = parameters as? AvatarNodeParameters, parameters.icon != .none {
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if case .deletedIcon = parameters.icon {
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colorsArray = grayscaleColors
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} else if case .savedMessagesIcon = parameters.icon {
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colorsArray = savedMessagesColors
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} else if case .editAvatarIcon = parameters.icon, let theme = parameters.theme {
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colorsArray = [theme.list.blocksBackgroundColor.cgColor, theme.list.blocksBackgroundColor.cgColor]
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} else if case let .archivedChatsIcon(hiddenByDefault) = parameters.icon, let theme = parameters.theme {
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let backgroundColors: (UIColor, UIColor)
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if hiddenByDefault {
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iconColor = theme.chatList.unpinnedArchiveAvatarColor.foregroundColor
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backgroundColors = theme.chatList.unpinnedArchiveAvatarColor.backgroundColors.colors
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} else {
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iconColor = theme.chatList.pinnedArchiveAvatarColor.foregroundColor
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backgroundColors = theme.chatList.pinnedArchiveAvatarColor.backgroundColors.colors
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}
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colorsArray = [backgroundColors.1.cgColor, backgroundColors.0.cgColor]
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} else {
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colorsArray = grayscaleColors
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}
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} else if colorIndex == -1 {
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if let parameters = parameters as? AvatarNodeParameters, let theme = parameters.theme {
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let colors = theme.chatList.unpinnedArchiveAvatarColor.backgroundColors.colors
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colorsArray = [colors.1.cgColor, colors.0.cgColor]
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} else {
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colorsArray = grayscaleColors
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}
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} else {
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colorsArray = AvatarNode.gradientColors[colorIndex % AvatarNode.gradientColors.count]
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}
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var locations: [CGFloat] = [1.0, 0.0]
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let colorSpace = CGColorSpaceCreateDeviceRGB()
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let gradient = CGGradient(colorsSpace: colorSpace, colors: colorsArray, locations: &locations)!
|
|
|
|
context.drawLinearGradient(gradient, start: CGPoint(), end: CGPoint(x: 0.0, y: bounds.size.height), options: CGGradientDrawingOptions())
|
|
|
|
context.setBlendMode(.normal)
|
|
|
|
if let parameters = parameters as? AvatarNodeParameters {
|
|
if case .deletedIcon = parameters.icon {
|
|
let factor = bounds.size.width / 60.0
|
|
context.translateBy(x: bounds.size.width / 2.0, y: bounds.size.height / 2.0)
|
|
context.scaleBy(x: factor, y: -factor)
|
|
context.translateBy(x: -bounds.size.width / 2.0, y: -bounds.size.height / 2.0)
|
|
|
|
if let deletedIcon = deletedIcon {
|
|
context.draw(deletedIcon.cgImage!, in: CGRect(origin: CGPoint(x: floor((bounds.size.width - deletedIcon.size.width) / 2.0), y: floor((bounds.size.height - deletedIcon.size.height) / 2.0)), size: deletedIcon.size))
|
|
}
|
|
} else if case .savedMessagesIcon = parameters.icon {
|
|
let factor = bounds.size.width / 60.0
|
|
context.translateBy(x: bounds.size.width / 2.0, y: bounds.size.height / 2.0)
|
|
context.scaleBy(x: factor, y: -factor)
|
|
context.translateBy(x: -bounds.size.width / 2.0, y: -bounds.size.height / 2.0)
|
|
|
|
if let savedMessagesIcon = savedMessagesIcon {
|
|
context.draw(savedMessagesIcon.cgImage!, in: CGRect(origin: CGPoint(x: floor((bounds.size.width - savedMessagesIcon.size.width) / 2.0), y: floor((bounds.size.height - savedMessagesIcon.size.height) / 2.0)), size: savedMessagesIcon.size))
|
|
}
|
|
} else if case .editAvatarIcon = parameters.icon, let theme = parameters.theme, !parameters.hasImage {
|
|
context.translateBy(x: bounds.size.width / 2.0, y: bounds.size.height / 2.0)
|
|
context.scaleBy(x: 1.0, y: -1.0)
|
|
context.translateBy(x: -bounds.size.width / 2.0, y: -bounds.size.height / 2.0)
|
|
|
|
if let editAvatarIcon = generateTintedImage(image: UIImage(bundleImageName: "Avatar/EditAvatarIcon"), color: theme.list.itemAccentColor) {
|
|
context.draw(editAvatarIcon.cgImage!, in: CGRect(origin: CGPoint(x: floor((bounds.size.width - editAvatarIcon.size.width) / 2.0) + 0.5, y: floor((bounds.size.height - editAvatarIcon.size.height) / 2.0) + 1.0), size: editAvatarIcon.size))
|
|
}
|
|
} else if case .archivedChatsIcon = parameters.icon {
|
|
let factor = bounds.size.width / 60.0
|
|
context.translateBy(x: bounds.size.width / 2.0, y: bounds.size.height / 2.0)
|
|
context.scaleBy(x: factor, y: -factor)
|
|
context.translateBy(x: -bounds.size.width / 2.0, y: -bounds.size.height / 2.0)
|
|
|
|
if let archivedChatsIcon = generateTintedImage(image: archivedChatsIcon, color: iconColor) {
|
|
context.draw(archivedChatsIcon.cgImage!, in: CGRect(origin: CGPoint(x: floor((bounds.size.width - archivedChatsIcon.size.width) / 2.0), y: floor((bounds.size.height - archivedChatsIcon.size.height) / 2.0)), size: archivedChatsIcon.size))
|
|
}
|
|
} else {
|
|
let letters = parameters.letters
|
|
let string = letters.count == 0 ? "" : (letters[0] + (letters.count == 1 ? "" : letters[1]))
|
|
let attributedString = NSAttributedString(string: string, attributes: [NSAttributedString.Key.font: parameters.font, NSAttributedString.Key.foregroundColor: UIColor.white])
|
|
|
|
let line = CTLineCreateWithAttributedString(attributedString)
|
|
let lineBounds = CTLineGetBoundsWithOptions(line, .useGlyphPathBounds)
|
|
|
|
let lineOffset = CGPoint(x: string == "B" ? 1.0 : 0.0, y: 0.0)
|
|
let lineOrigin = CGPoint(x: floorToScreenPixels(-lineBounds.origin.x + (bounds.size.width - lineBounds.size.width) / 2.0) + lineOffset.x, y: floorToScreenPixels(-lineBounds.origin.y + (bounds.size.height - lineBounds.size.height) / 2.0))
|
|
|
|
context.translateBy(x: bounds.size.width / 2.0, y: bounds.size.height / 2.0)
|
|
context.scaleBy(x: 1.0, y: -1.0)
|
|
context.translateBy(x: -bounds.size.width / 2.0, y: -bounds.size.height / 2.0)
|
|
|
|
context.translateBy(x: lineOrigin.x, y: lineOrigin.y)
|
|
CTLineDraw(line, context)
|
|
context.translateBy(x: -lineOrigin.x, y: -lineOrigin.y)
|
|
}
|
|
}
|
|
}
|
|
|
|
static func asyncLayout(_ node: AvatarNode?) -> (_ context: AccountContext, _ peer: Peer, _ font: UIFont) -> () -> AvatarNode? {
|
|
let currentState = node?.state
|
|
let createNode = node == nil
|
|
return { [weak node] context, peer, font in
|
|
let state: AvatarNodeState = .peerAvatar(peer.id, peer.displayLetters, peer.smallProfileImage)
|
|
if currentState != state {
|
|
|
|
}
|
|
var createdNode: AvatarNode?
|
|
if createNode {
|
|
createdNode = AvatarNode(font: font)
|
|
}
|
|
return {
|
|
let updatedNode: AvatarNode?
|
|
if let createdNode = createdNode {
|
|
updatedNode = createdNode
|
|
} else {
|
|
updatedNode = node
|
|
}
|
|
if let updatedNode = updatedNode {
|
|
return updatedNode
|
|
} else {
|
|
return nil
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public func drawPeerAvatarLetters(context: CGContext, size: CGSize, font: UIFont, letters: [String], peerId: PeerId) {
|
|
context.beginPath()
|
|
context.addEllipse(in: CGRect(x: 0.0, y: 0.0, width: size.width, height:
|
|
size.height))
|
|
context.clip()
|
|
|
|
let colorIndex: Int
|
|
if peerId.namespace == -1 {
|
|
colorIndex = -1
|
|
} else {
|
|
colorIndex = Int(abs(peerId.id))
|
|
}
|
|
|
|
let colorsArray: NSArray
|
|
if colorIndex == -1 {
|
|
colorsArray = grayscaleColors
|
|
} else {
|
|
colorsArray = AvatarNode.gradientColors[colorIndex % AvatarNode.gradientColors.count]
|
|
}
|
|
|
|
var locations: [CGFloat] = [1.0, 0.0]
|
|
|
|
let colorSpace = CGColorSpaceCreateDeviceRGB()
|
|
let gradient = CGGradient(colorsSpace: colorSpace, colors: colorsArray, locations: &locations)!
|
|
|
|
context.drawLinearGradient(gradient, start: CGPoint(), end: CGPoint(x: 0.0, y: size.height), options: CGGradientDrawingOptions())
|
|
|
|
context.resetClip()
|
|
|
|
context.setBlendMode(.normal)
|
|
|
|
let string = letters.count == 0 ? "" : (letters[0] + (letters.count == 1 ? "" : letters[1]))
|
|
let attributedString = NSAttributedString(string: string, attributes: [NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: UIColor.white])
|
|
|
|
let line = CTLineCreateWithAttributedString(attributedString)
|
|
let lineBounds = CTLineGetBoundsWithOptions(line, .useGlyphPathBounds)
|
|
|
|
let lineOffset = CGPoint(x: string == "B" ? 1.0 : 0.0, y: 0.0)
|
|
let lineOrigin = CGPoint(x: floorToScreenPixels(-lineBounds.origin.x + (size.width - lineBounds.size.width) / 2.0) + lineOffset.x, y: floorToScreenPixels(-lineBounds.origin.y + (size.height - lineBounds.size.height) / 2.0))
|
|
|
|
context.translateBy(x: size.width / 2.0, y: size.height / 2.0)
|
|
context.scaleBy(x: 1.0, y: -1.0)
|
|
context.translateBy(x: -size.width / 2.0, y: -size.height / 2.0)
|
|
|
|
let textPosition = context.textPosition
|
|
context.translateBy(x: lineOrigin.x, y: lineOrigin.y)
|
|
CTLineDraw(line, context)
|
|
context.translateBy(x: -lineOrigin.x, y: -lineOrigin.y)
|
|
context.textPosition = textPosition
|
|
}
|