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148
submodules/Display/Source/Navigation/NavigationModalFrame.swift
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148
submodules/Display/Source/Navigation/NavigationModalFrame.swift
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import Foundation
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import UIKit
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import AsyncDisplayKit
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import SwiftSignalKit
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private enum CornerType {
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case topLeft
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case topRight
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case bottomLeft
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case bottomRight
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}
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private func generateCornerImage(radius: CGFloat, type: CornerType) -> UIImage? {
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return generateImage(CGSize(width: radius, height: radius), rotatedContext: { size, context in
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context.setFillColor(UIColor.black.cgColor)
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context.fill(CGRect(origin: CGPoint(), size: size))
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context.setBlendMode(.copy)
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context.setFillColor(UIColor.clear.cgColor)
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UIGraphicsPushContext(context)
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let origin: CGPoint
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switch type {
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case .topLeft:
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origin = CGPoint()
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case .topRight:
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origin = CGPoint(x: -radius, y: 0.0)
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case .bottomLeft:
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origin = CGPoint(x: 0.0, y: -radius)
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case .bottomRight:
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origin = CGPoint(x: -radius, y: -radius)
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}
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UIBezierPath(roundedRect: CGRect(origin: origin, size: CGSize(width: radius * 2.0, height: radius * 2.0)), cornerRadius: radius).fill()
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UIGraphicsPopContext()
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})
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}
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final class NavigationModalFrame: ASDisplayNode {
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private let topShade: ASDisplayNode
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private let leftShade: ASDisplayNode
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private let rightShade: ASDisplayNode
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private let bottomShade: ASDisplayNode
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private let topLeftCorner: ASImageNode
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private let topRightCorner: ASImageNode
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private let bottomLeftCorner: ASImageNode
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private let bottomRightCorner: ASImageNode
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private var currentMaxCornerRadius: CGFloat?
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private var progress: CGFloat = 1.0
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private var additionalProgress: CGFloat = 0.0
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private var validLayout: ContainerViewLayout?
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init(theme: NavigationControllerTheme) {
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self.topShade = ASDisplayNode()
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self.topShade.backgroundColor = .black
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self.leftShade = ASDisplayNode()
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self.leftShade.backgroundColor = .black
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self.rightShade = ASDisplayNode()
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self.rightShade.backgroundColor = .black
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self.bottomShade = ASDisplayNode()
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self.bottomShade.backgroundColor = .black
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self.topLeftCorner = ASImageNode()
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self.topLeftCorner.displaysAsynchronously = false
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self.topRightCorner = ASImageNode()
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self.topRightCorner.displaysAsynchronously = false
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self.bottomLeftCorner = ASImageNode()
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self.bottomLeftCorner.displaysAsynchronously = false
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self.bottomRightCorner = ASImageNode()
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self.bottomRightCorner.displaysAsynchronously = false
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super.init()
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self.addSubnode(self.topShade)
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self.addSubnode(self.leftShade)
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self.addSubnode(self.rightShade)
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self.addSubnode(self.bottomShade)
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self.addSubnode(self.topLeftCorner)
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self.addSubnode(self.topRightCorner)
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self.addSubnode(self.bottomLeftCorner)
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self.addSubnode(self.bottomRightCorner)
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}
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func update(layout: ContainerViewLayout, transition: ContainedViewLayoutTransition) {
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self.validLayout = layout
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self.updateShades(layout: layout, progress: 1.0 - self.progress, additionalProgress: self.additionalProgress, transition: transition, completion: {})
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}
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func updateDismissal(transition: ContainedViewLayoutTransition, progress: CGFloat, additionalProgress: CGFloat, completion: @escaping () -> Void) {
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self.progress = progress
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self.additionalProgress = additionalProgress
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if let layout = self.validLayout {
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self.updateShades(layout: layout, progress: 1.0 - progress, additionalProgress: additionalProgress, transition: transition, completion: completion)
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} else {
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completion()
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}
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}
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private func updateShades(layout: ContainerViewLayout, progress: CGFloat, additionalProgress: CGFloat, transition: ContainedViewLayoutTransition, completion: @escaping () -> Void) {
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let sideInset: CGFloat = 16.0
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var topInset: CGFloat = 0.0
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if let statusBarHeight = layout.statusBarHeight {
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topInset += statusBarHeight
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}
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let additionalTopInset: CGFloat = 10.0
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let contentScale = (layout.size.width - sideInset * 2.0) / layout.size.width
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let bottomInset: CGFloat = layout.size.height - contentScale * layout.size.height - topInset
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let cornerRadius: CGFloat = 9.0
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let initialCornerRadius: CGFloat
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if !layout.safeInsets.top.isZero {
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initialCornerRadius = 40.0
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} else {
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initialCornerRadius = 0.0
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}
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if self.currentMaxCornerRadius != cornerRadius {
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self.topLeftCorner.image = generateCornerImage(radius: max(initialCornerRadius, cornerRadius), type: .topLeft)
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self.topRightCorner.image = generateCornerImage(radius: max(initialCornerRadius, cornerRadius), type: .topRight)
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self.bottomLeftCorner.image = generateCornerImage(radius: max(initialCornerRadius, cornerRadius), type: .bottomLeft)
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self.bottomRightCorner.image = generateCornerImage(radius: max(initialCornerRadius, cornerRadius), type: .bottomRight)
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}
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let cornerSize = progress * cornerRadius + (1.0 - progress) * initialCornerRadius
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let cornerSideOffset: CGFloat = progress * sideInset + additionalProgress * sideInset
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let cornerTopOffset: CGFloat = progress * topInset + additionalProgress * additionalTopInset
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let cornerBottomOffset: CGFloat = progress * bottomInset
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transition.updateFrame(node: self.topLeftCorner, frame: CGRect(origin: CGPoint(x: cornerSideOffset, y: cornerTopOffset), size: CGSize(width: cornerSize, height: cornerSize)))
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transition.updateFrame(node: self.topRightCorner, frame: CGRect(origin: CGPoint(x: layout.size.width - cornerSideOffset - cornerSize, y: cornerTopOffset), size: CGSize(width: cornerSize, height: cornerSize)))
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transition.updateFrame(node: self.bottomLeftCorner, frame: CGRect(origin: CGPoint(x: cornerSideOffset, y: layout.size.height - cornerBottomOffset - cornerSize), size: CGSize(width: cornerSize, height: cornerSize)))
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transition.updateFrame(node: self.bottomRightCorner, frame: CGRect(origin: CGPoint(x: layout.size.width - cornerSideOffset - cornerSize, y: layout.size.height - cornerBottomOffset - cornerSize), size: CGSize(width: cornerSize, height: cornerSize)))
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let topShadeOffset: CGFloat = progress * topInset + additionalProgress * additionalTopInset
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let bottomShadeOffset: CGFloat = progress * bottomInset
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let leftShadeOffset: CGFloat = progress * sideInset + additionalProgress * sideInset
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let rightShadeWidth: CGFloat = progress * sideInset + additionalProgress * sideInset
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let rightShadeOffset: CGFloat = layout.size.width - rightShadeWidth
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transition.updateFrame(node: self.topShade, frame: CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: CGSize(width: layout.size.width, height: topShadeOffset)))
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transition.updateFrame(node: self.bottomShade, frame: CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - bottomShadeOffset), size: CGSize(width: layout.size.width, height: bottomShadeOffset)))
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transition.updateFrame(node: self.leftShade, frame: CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: CGSize(width: leftShadeOffset, height: layout.size.height)))
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transition.updateFrame(node: self.rightShade, frame: CGRect(origin: CGPoint(x: rightShadeOffset, y: 0.0), size: CGSize(width: rightShadeWidth, height: layout.size.height)), completion: { _ in
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completion()
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})
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}
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}
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