mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
554 lines
24 KiB
Swift
554 lines
24 KiB
Swift
import Foundation
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import UIKit
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import UIKit.UIGestureRecognizerSubclass
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import AsyncDisplayKit
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import Display
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import TelegramPresentationData
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import ImageContentAnalysis
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private func findScrollView(view: UIView?) -> UIScrollView? {
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if let view = view {
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if let view = view as? UIScrollView {
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return view
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}
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return findScrollView(view: view.superview)
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} else {
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return nil
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}
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}
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private func cancelScrollViewGestures(view: UIView?) {
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if let view = view {
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if let gestureRecognizers = view.gestureRecognizers {
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for recognizer in gestureRecognizers {
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if let recognizer = recognizer as? UIPanGestureRecognizer {
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switch recognizer.state {
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case .began, .possible:
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recognizer.state = .ended
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default:
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break
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}
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}
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}
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}
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cancelScrollViewGestures(view: view.superview)
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}
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}
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private func generateKnobImage(color: UIColor, diameter: CGFloat, inverted: Bool = false) -> UIImage? {
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let f: (CGSize, CGContext) -> Void = { size, context in
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context.clear(CGRect(origin: CGPoint(), size: size))
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context.setFillColor(color.cgColor)
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context.fill(CGRect(origin: CGPoint(x: (size.width - 2.0) / 2.0, y: size.width / 2.0), size: CGSize(width: 2.0, height: size.height - size.width / 2.0 - 1.0)))
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context.fillEllipse(in: CGRect(origin: CGPoint(x: floor((size.width - diameter) / 2.0), y: floor((size.width - diameter) / 2.0)), size: CGSize(width: diameter, height: diameter)))
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context.fillEllipse(in: CGRect(origin: CGPoint(x: (size.width - 2.0) / 2.0, y: size.width + 2.0), size: CGSize(width: 2.0, height: 2.0)))
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}
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let size = CGSize(width: 12.0, height: 12.0 + 2.0 + 2.0)
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if inverted {
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return generateImage(size, contextGenerator: f)?.stretchableImage(withLeftCapWidth: Int(size.width / 2.0), topCapHeight: Int(size.height) - (Int(size.width) + 1))
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} else {
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return generateImage(size, rotatedContext: f)?.stretchableImage(withLeftCapWidth: Int(size.width / 2.0), topCapHeight: Int(size.width) + 1)
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}
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}
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private func generateSelectionsImage(size: CGSize, rects: [RecognizedContent.Rect], color: UIColor) -> UIImage? {
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return generateImage(size, opaque: false, rotatedContext: { size, c in
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let bounds = CGRect(origin: CGPoint(), size: size)
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c.clear(bounds)
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c.setFillColor(color.cgColor)
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for rect in rects {
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let path = UIBezierPath(rect: rect, radius: 2.5)
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c.addPath(path.cgPath)
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c.fillPath()
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}
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})
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}
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public final class RecognizedTextSelectionTheme {
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public let selection: UIColor
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public let knob: UIColor
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public let knobDiameter: CGFloat
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public init(selection: UIColor, knob: UIColor, knobDiameter: CGFloat = 12.0) {
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self.selection = selection
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self.knob = knob
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self.knobDiameter = knobDiameter
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}
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}
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private enum Knob {
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case left
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case right
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}
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private final class RecognizedTextSelectionGestureRecognizer: UIGestureRecognizer, UIGestureRecognizerDelegate {
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private var longTapTimer: Timer?
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private var movingKnob: (Knob, CGPoint, CGPoint)?
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private var currentLocation: CGPoint?
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var beginSelection: ((CGPoint) -> Void)?
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var knobAtPoint: ((CGPoint) -> (Knob, CGPoint)?)?
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var moveKnob: ((Knob, CGPoint) -> Void)?
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var finishedMovingKnob: (() -> Void)?
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var clearSelection: (() -> Void)?
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override init(target: Any?, action: Selector?) {
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super.init(target: nil, action: nil)
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self.delegate = self
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}
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override public func reset() {
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super.reset()
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self.longTapTimer?.invalidate()
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self.longTapTimer = nil
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self.movingKnob = nil
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self.currentLocation = nil
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}
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override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesBegan(touches, with: event)
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let currentLocation = touches.first?.location(in: self.view)
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self.currentLocation = currentLocation
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if let currentLocation = currentLocation {
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if let (knob, knobPosition) = self.knobAtPoint?(currentLocation) {
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self.movingKnob = (knob, knobPosition, currentLocation)
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cancelScrollViewGestures(view: self.view?.superview)
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self.state = .began
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} else if self.longTapTimer == nil {
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final class TimerTarget: NSObject {
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let f: () -> Void
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init(_ f: @escaping () -> Void) {
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self.f = f
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}
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@objc func event() {
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self.f()
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}
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}
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let longTapTimer = Timer(timeInterval: 0.3, target: TimerTarget({ [weak self] in
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self?.longTapEvent()
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}), selector: #selector(TimerTarget.event), userInfo: nil, repeats: false)
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self.longTapTimer = longTapTimer
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RunLoop.main.add(longTapTimer, forMode: .common)
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}
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}
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}
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override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesMoved(touches, with: event)
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let currentLocation = touches.first?.location(in: self.view)
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self.currentLocation = currentLocation
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if let (knob, initialKnobPosition, initialGesturePosition) = self.movingKnob, let currentLocation = currentLocation {
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self.moveKnob?(knob, CGPoint(x: initialKnobPosition.x + currentLocation.x - initialGesturePosition.x, y: initialKnobPosition.y + currentLocation.y - initialGesturePosition.y))
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}
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}
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override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesEnded(touches, with: event)
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if let longTapTimer = self.longTapTimer {
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self.longTapTimer = nil
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longTapTimer.invalidate()
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self.clearSelection?()
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} else {
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if let _ = self.currentLocation, let _ = self.movingKnob {
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self.finishedMovingKnob?()
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}
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}
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self.state = .ended
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}
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override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesCancelled(touches, with: event)
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self.state = .cancelled
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}
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private func longTapEvent() {
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if let currentLocation = self.currentLocation {
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self.beginSelection?(currentLocation)
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self.state = .ended
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}
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}
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func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
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return true
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}
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@available(iOS 9.0, *)
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func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive press: UIPress) -> Bool {
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return true
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}
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}
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public final class RecognizedTextSelectionNodeView: UIView {
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var hitTestImpl: ((CGPoint, UIEvent?) -> UIView?)?
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override public func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
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return self.hitTestImpl?(point, event)
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}
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}
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public enum RecognizedTextSelectionAction {
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case copy
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case share
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case lookup
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case speak
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case translate
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}
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public final class RecognizedTextSelectionNode: ASDisplayNode {
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private let size: CGSize
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private let theme: RecognizedTextSelectionTheme
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private let strings: PresentationStrings
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private let recognitions: [(string: String, rect: RecognizedContent.Rect)]
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private let updateIsActive: (Bool) -> Void
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private let present: (ViewController, Any?) -> Void
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private weak var rootNode: ASDisplayNode?
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private let performAction: (String, RecognizedTextSelectionAction) -> Void
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private var highlightOverlay: ASImageNode?
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private let leftKnob: ASImageNode
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private let rightKnob: ASImageNode
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private var selectedIndices: Set<Int>?
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private var currentRects: [RecognizedContent.Rect]?
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private var currentTopLeft: CGPoint?
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private var currentBottomRight: CGPoint?
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public let highlightAreaNode: ASDisplayNode
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private var recognizer: RecognizedTextSelectionGestureRecognizer?
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public init(size: CGSize, theme: RecognizedTextSelectionTheme, strings: PresentationStrings, recognitions: [RecognizedContent], updateIsActive: @escaping (Bool) -> Void, present: @escaping (ViewController, Any?) -> Void, rootNode: ASDisplayNode, performAction: @escaping (String, RecognizedTextSelectionAction) -> Void) {
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self.size = size
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self.theme = theme
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self.strings = strings
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let sortedRecognitions = recognitions.sorted(by: { lhs, rhs in
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if abs(lhs.rect.leftMidPoint.y - rhs.rect.rightMidPoint.y) < min(lhs.rect.leftHeight, rhs.rect.leftHeight) / 2.0 {
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return lhs.rect.leftMidPoint.x < rhs.rect.leftMidPoint.x
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} else {
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return lhs.rect.leftMidPoint.y > rhs.rect.leftMidPoint.y
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}
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})
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var textRecognitions: [(String, RecognizedContent.Rect)] = []
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for recognition in sortedRecognitions {
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if case let .text(string, _) = recognition.content {
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textRecognitions.append((string, recognition.rect))
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// for word in words {
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// textRecognitions.append((String(string[word.0]), word.1))
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// }
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}
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}
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self.recognitions = textRecognitions
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self.updateIsActive = updateIsActive
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self.present = present
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self.rootNode = rootNode
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self.performAction = performAction
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self.leftKnob = ASImageNode()
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self.leftKnob.isUserInteractionEnabled = false
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self.leftKnob.image = generateKnobImage(color: theme.knob, diameter: theme.knobDiameter)
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self.leftKnob.displaysAsynchronously = false
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self.leftKnob.displayWithoutProcessing = true
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self.leftKnob.alpha = 0.0
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self.rightKnob = ASImageNode()
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self.rightKnob.isUserInteractionEnabled = false
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self.rightKnob.image = generateKnobImage(color: theme.knob, diameter: theme.knobDiameter, inverted: true)
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self.rightKnob.displaysAsynchronously = false
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self.rightKnob.displayWithoutProcessing = true
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self.rightKnob.alpha = 0.0
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self.highlightAreaNode = ASDisplayNode()
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super.init()
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self.setViewBlock({
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return RecognizedTextSelectionNodeView()
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})
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self.addSubnode(self.leftKnob)
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self.addSubnode(self.rightKnob)
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}
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override public func didLoad() {
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super.didLoad()
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(self.view as? RecognizedTextSelectionNodeView)?.hitTestImpl = { [weak self] point, event in
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return self?.hitTest(point, with: event)
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}
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let recognizer = RecognizedTextSelectionGestureRecognizer(target: nil, action: nil)
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recognizer.knobAtPoint = { [weak self] point in
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return self?.knobAtPoint(point)
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}
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recognizer.moveKnob = { [weak self] knob, point in
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guard let strongSelf = self, let _ = strongSelf.selectedIndices, let currentTopLeft = strongSelf.currentTopLeft, let currentBottomRight = strongSelf.currentBottomRight else {
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return
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}
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let topLeftPoint: CGPoint
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let bottomRightPoint: CGPoint
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switch knob {
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case .left:
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topLeftPoint = point
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bottomRightPoint = currentBottomRight
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case .right:
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topLeftPoint = currentTopLeft
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bottomRightPoint = point
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}
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let selectionRect = CGRect(x: min(topLeftPoint.x, bottomRightPoint.x), y: min(topLeftPoint.y, bottomRightPoint.y), width: max(bottomRightPoint.x, topLeftPoint.x) - min(bottomRightPoint.x, topLeftPoint.x), height: max(bottomRightPoint.y, topLeftPoint.y) - min(bottomRightPoint.y, topLeftPoint.y))
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var i = 0
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var selectedIndices: Set<Int>?
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for recognition in strongSelf.recognitions {
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let rect = recognition.rect.convertTo(size: strongSelf.size, insets: UIEdgeInsets(top: -4.0, left: -2.0, bottom: -4.0, right: -2.0))
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if selectionRect.intersects(rect.boundingFrame) {
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if selectedIndices == nil {
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selectedIndices = Set()
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}
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selectedIndices?.insert(i)
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}
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i += 1
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}
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strongSelf.selectedIndices = selectedIndices
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strongSelf.updateSelection(range: selectedIndices, animateIn: false)
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}
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recognizer.finishedMovingKnob = { [weak self] in
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guard let strongSelf = self else {
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return
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}
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strongSelf.displayMenu()
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}
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recognizer.beginSelection = { [weak self] point in
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guard let strongSelf = self else {
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return
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}
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let _ = strongSelf.dismissSelection()
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var i = 0
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var selectedIndices: Set<Int>?
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var topLeft: CGPoint?
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var bottomRight: CGPoint?
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for recognition in strongSelf.recognitions {
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let rect = recognition.rect.convertTo(size: strongSelf.size, insets: UIEdgeInsets(top: -4.0, left: -2.0, bottom: -4.0, right: -2.0))
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if rect.boundingFrame.contains(point) {
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topLeft = rect.topLeft
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bottomRight = rect.bottomRight
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selectedIndices = Set([i])
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break
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}
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i += 1
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}
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strongSelf.selectedIndices = selectedIndices
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strongSelf.currentTopLeft = topLeft
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strongSelf.currentBottomRight = bottomRight
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strongSelf.updateSelection(range: selectedIndices, animateIn: true)
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strongSelf.displayMenu()
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strongSelf.updateIsActive(true)
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}
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recognizer.clearSelection = { [weak self] in
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let _ = self?.dismissSelection()
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self?.updateIsActive(false)
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}
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self.recognizer = recognizer
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self.view.addGestureRecognizer(recognizer)
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}
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public func updateLayout() {
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if let selectedIndices = self.selectedIndices {
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self.updateSelection(range: selectedIndices, animateIn: false)
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}
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}
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private func updateSelection(range: Set<Int>?, animateIn: Bool) {
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var rects: [RecognizedContent.Rect]? = nil
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var startEdge: (position: CGPoint, height: CGFloat)?
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var endEdge: (position: CGPoint, height: CGFloat)?
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if let range = range {
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var i = 0
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rects = []
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for recognition in self.recognitions {
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let rect = recognition.rect.convertTo(size: self.size)
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if range.contains(i) {
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if startEdge == nil {
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startEdge = (rect.leftMidPoint, rect.leftHeight)
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}
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rects?.append(rect)
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}
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i += 1
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}
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if let rect = rects?.last {
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endEdge = (rect.rightMidPoint, rect.rightHeight)
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}
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}
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self.currentRects = rects
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if let rects = rects, let startEdge = startEdge, let endEdge = endEdge, !rects.isEmpty {
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let highlightOverlay: ASImageNode
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if let current = self.highlightOverlay {
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highlightOverlay = current
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} else {
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highlightOverlay = ASImageNode()
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self.highlightOverlay = highlightOverlay
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self.highlightAreaNode.addSubnode(highlightOverlay)
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}
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highlightOverlay.frame = self.bounds
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highlightOverlay.image = generateSelectionsImage(size: self.size, rects: rects, color: self.theme.selection.withAlphaComponent(1.0))
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highlightOverlay.alpha = self.theme.selection.alpha
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if let image = self.leftKnob.image {
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self.leftKnob.frame = CGRect(origin: CGPoint(x: floor(startEdge.position.x - image.size.width / 2.0), y: startEdge.position.y - floorToScreenPixels(startEdge.height / 2.0) - self.theme.knobDiameter), size: CGSize(width: image.size.width, height: self.theme.knobDiameter + startEdge.height + 2.0))
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self.rightKnob.frame = CGRect(origin: CGPoint(x: floor(endEdge.position.x + 1.0 - image.size.width / 2.0), y: endEdge.position.y - floorToScreenPixels(endEdge.height / 2.0)), size: CGSize(width: image.size.width, height: self.theme.knobDiameter + endEdge.height + 2.0))
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}
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if self.leftKnob.alpha.isZero {
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highlightOverlay.layer.animateAlpha(from: 0.0, to: highlightOverlay.alpha, duration: 0.3, timingFunction: CAMediaTimingFunctionName.easeOut.rawValue)
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self.leftKnob.alpha = 1.0
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self.leftKnob.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.14, delay: 0.19)
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self.rightKnob.alpha = 1.0
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self.rightKnob.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.14, delay: 0.19)
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self.leftKnob.layer.animateSpring(from: 0.5 as NSNumber, to: 1.0 as NSNumber, keyPath: "transform.scale", duration: 0.2, delay: 0.25, initialVelocity: 0.0, damping: 80.0)
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self.rightKnob.layer.animateSpring(from: 0.5 as NSNumber, to: 1.0 as NSNumber, keyPath: "transform.scale", duration: 0.2, delay: 0.25, initialVelocity: 0.0, damping: 80.0)
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if animateIn {
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var result = CGRect()
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for rect in rects {
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if result.isEmpty {
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result = rect.boundingFrame
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} else {
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result = result.union(rect.boundingFrame)
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}
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}
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highlightOverlay.layer.animateScale(from: 2.0, to: 1.0, duration: 0.26)
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let fromResult = CGRect(origin: CGPoint(x: result.minX - result.width / 2.0, y: result.minY - result.height / 2.0), size: CGSize(width: result.width * 2.0, height: result.height * 2.0))
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highlightOverlay.layer.animatePosition(from: CGPoint(x: (-fromResult.midX + highlightOverlay.bounds.midX) / 1.0, y: (-fromResult.midY + highlightOverlay.bounds.midY) / 1.0), to: CGPoint(), duration: 0.26, additive: true)
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}
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}
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} else if let highlightOverlay = self.highlightOverlay {
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self.highlightOverlay = nil
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highlightOverlay.layer.animateAlpha(from: highlightOverlay.alpha, to: 0.0, duration: 0.18, removeOnCompletion: false, completion: { [weak highlightOverlay] _ in
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highlightOverlay?.removeFromSupernode()
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})
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self.leftKnob.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.18)
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self.leftKnob.alpha = 0.0
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self.leftKnob.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.18)
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self.rightKnob.alpha = 0.0
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self.rightKnob.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.18)
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}
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}
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private func knobAtPoint(_ point: CGPoint) -> (Knob, CGPoint)? {
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if !self.leftKnob.alpha.isZero, self.leftKnob.frame.insetBy(dx: -4.0, dy: -8.0).contains(point) {
|
|
return (.left, self.leftKnob.frame.offsetBy(dx: 0.0, dy: self.leftKnob.frame.width / 2.0).center)
|
|
}
|
|
if !self.rightKnob.alpha.isZero, self.rightKnob.frame.insetBy(dx: -4.0, dy: -8.0).contains(point) {
|
|
return (.right, self.rightKnob.frame.offsetBy(dx: 0.0, dy: -self.rightKnob.frame.width / 2.0).center)
|
|
}
|
|
if !self.leftKnob.alpha.isZero, self.leftKnob.frame.insetBy(dx: -14.0, dy: -14.0).contains(point) {
|
|
return (.left, self.leftKnob.frame.offsetBy(dx: 0.0, dy: self.leftKnob.frame.width / 2.0).center)
|
|
}
|
|
if !self.rightKnob.alpha.isZero, self.rightKnob.frame.insetBy(dx: -14.0, dy: -14.0).contains(point) {
|
|
return (.right, self.rightKnob.frame.offsetBy(dx: 0.0, dy: -self.rightKnob.frame.width / 2.0).center)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
public func dismissSelection() -> Bool {
|
|
if let _ = self.selectedIndices {
|
|
self.selectedIndices = nil
|
|
self.updateSelection(range: nil, animateIn: false)
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
private func displayMenu() {
|
|
guard let currentRects = self.currentRects, !currentRects.isEmpty, let selectedIndices = self.selectedIndices else {
|
|
return
|
|
}
|
|
|
|
var completeRect = currentRects[0].boundingFrame
|
|
for i in 0 ..< currentRects.count {
|
|
completeRect = completeRect.union(currentRects[i].boundingFrame)
|
|
}
|
|
completeRect = completeRect.insetBy(dx: 0.0, dy: -12.0)
|
|
|
|
var selectedText = ""
|
|
for i in 0 ..< self.recognitions.count {
|
|
if selectedIndices.contains(i) {
|
|
let (string, _) = self.recognitions[i]
|
|
if !selectedText.isEmpty {
|
|
selectedText += "\n"
|
|
}
|
|
selectedText.append(contentsOf: string.trimmingCharacters(in: .whitespacesAndNewlines))
|
|
}
|
|
}
|
|
|
|
var actions: [ContextMenuAction] = []
|
|
actions.append(ContextMenuAction(content: .text(title: self.strings.Conversation_ContextMenuCopy, accessibilityLabel: self.strings.Conversation_ContextMenuCopy), action: { [weak self] in
|
|
self?.performAction(selectedText, .copy)
|
|
let _ = self?.dismissSelection()
|
|
}))
|
|
actions.append(ContextMenuAction(content: .text(title: self.strings.Conversation_ContextMenuLookUp, accessibilityLabel: self.strings.Conversation_ContextMenuLookUp), action: { [weak self] in
|
|
self?.performAction(selectedText, .lookup)
|
|
let _ = self?.dismissSelection()
|
|
}))
|
|
if #available(iOS 15.0, *) {
|
|
actions.append(ContextMenuAction(content: .text(title: self.strings.Conversation_ContextMenuTranslate, accessibilityLabel: self.strings.Conversation_ContextMenuTranslate), action: { [weak self] in
|
|
self?.performAction(selectedText, .translate)
|
|
let _ = self?.dismissSelection()
|
|
}))
|
|
}
|
|
// if isSpeakSelectionEnabled() {
|
|
// actions.append(ContextMenuAction(content: .text(title: self.strings.Conversation_ContextMenuSpeak, accessibilityLabel: self.strings.Conversation_ContextMenuSpeak), action: { [weak self] in
|
|
// self?.performAction(selectedText, .speak)
|
|
// let _ = self?.dismissSelection()
|
|
// }))
|
|
// }
|
|
actions.append(ContextMenuAction(content: .text(title: self.strings.Conversation_ContextMenuShare, accessibilityLabel: self.strings.Conversation_ContextMenuShare), action: { [weak self] in
|
|
self?.performAction(selectedText, .share)
|
|
let _ = self?.dismissSelection()
|
|
}))
|
|
|
|
self.present(makeContextMenuController(actions: actions, catchTapsOutside: false, hasHapticFeedback: false), ContextMenuControllerPresentationArguments(sourceNodeAndRect: { [weak self] in
|
|
guard let strongSelf = self, let rootNode = strongSelf.rootNode else {
|
|
return nil
|
|
}
|
|
return (strongSelf, completeRect, rootNode, rootNode.bounds)
|
|
}, bounce: false))
|
|
}
|
|
|
|
override public func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
|
|
if self.knobAtPoint(point) != nil {
|
|
return self.view
|
|
}
|
|
if self.bounds.contains(point) {
|
|
for recognition in self.recognitions {
|
|
let mappedRect = recognition.rect.convertTo(size: self.bounds.size)
|
|
if mappedRect.boundingFrame.insetBy(dx: -20.0, dy: -20.0).contains(point) {
|
|
return self.view
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
return nil
|
|
}
|
|
}
|