101 lines
3.7 KiB
Swift
101 lines
3.7 KiB
Swift
//
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// ComposeReplyView.swift
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// Tusker
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//
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// Created by Shadowfacts on 8/22/20.
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// Copyright © 2020 Shadowfacts. All rights reserved.
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//
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import SwiftUI
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struct ComposeReplyView: View {
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let status: StatusMO
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let rowTopInset: CGFloat
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let globalFrameOutsideList: CGRect
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@State private var displayNameHeight: CGFloat?
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@State private var contentHeight: CGFloat?
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@EnvironmentObject private var mastodonController: MastodonController
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@ObservedObject private var preferences = Preferences.shared
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private let horizSpacing: CGFloat = 8
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var body: some View {
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HStack(alignment: .top, spacing: horizSpacing) {
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GeometryReader(content: self.replyAvatarImage)
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.frame(width: 50)
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VStack(alignment: .leading, spacing: 0) {
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HStack {
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AccountDisplayNameLabel(account: status.account, textStyle: .body, emojiSize: 17)
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.lineLimit(1)
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.layoutPriority(1)
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Text(verbatim: "@\(status.account.acct)")
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.font(.system(size: 17, weight: .light))
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.foregroundColor(.secondary)
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.lineLimit(1)
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Spacer()
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}
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.background(GeometryReader { proxy in
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Color.clear
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.preference(key: DisplayNameHeightPrefKey.self, value: proxy.size.height)
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.onPreferenceChange(DisplayNameHeightPrefKey.self) { newValue in
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displayNameHeight = newValue
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}
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})
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ComposeReplyContentView(status: status, mastodonController: mastodonController) { newHeight in
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// otherwise, with long in-reply-to statuses, the main content text view position seems not to update
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// and it ends up partially behind the header
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DispatchQueue.main.async {
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contentHeight = newHeight
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}
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}
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.frame(height: contentHeight ?? 0)
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}
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}
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.frame(minHeight: 50, alignment: .top)
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}
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private func replyAvatarImage(geometry: GeometryProxy) -> some View {
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// using a coordinate space declared outside of the List doesn't work, so we do the math ourselves
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let globalFrame = geometry.frame(in: .global)
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let scrollOffset = -(globalFrame.minY - globalFrameOutsideList.minY)
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// add rowTopInset so that the image is always at least rowTopInset away from the top
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var offset = scrollOffset + rowTopInset
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// offset can never be less than 0 (i.e., above the top of the in-reply-to content)
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offset = max(offset, 0)
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// subtract 50, because we care about where the bottom of the view is but the offset is relative to the top of the view
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let maxOffset = max((contentHeight ?? 0) + (displayNameHeight ?? 0) - 50, 0)
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// once you scroll past the in-reply-to-content, the bottom of the avatar should be pinned to the bottom of the content
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offset = min(offset, maxOffset)
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return ComposeAvatarImageView(url: status.account.avatar)
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.frame(width: 50, height: 50)
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.cornerRadius(preferences.avatarStyle.cornerRadiusFraction * 50)
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.offset(x: 0, y: offset)
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.accessibilityHidden(true)
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}
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}
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private struct DisplayNameHeightPrefKey: PreferenceKey {
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static var defaultValue: CGFloat = 0
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static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
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value = nextValue()
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}
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}
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//struct ComposeReplyView_Previews: PreviewProvider {
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// static var previews: some View {
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// ComposeReplyView()
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// }
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//}
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