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Code Issues Packages Projects Releases Wiki Activity

scroll: more consistent scrolling behavior

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Scrolling will always anchor the active note to the top of the screen

This is less confusing overall

Changelog-Changed: Clicking on a note will now always scroll it to the top
Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin 2022-08-09 09:32:22 -07:00
parent ff6f2a61ac
commit eec8763733
6 changed files with 72 additions and 19 deletions
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4
damus.xcodeproj/project.pbxproj
View File

@ -84,6 +84,7 @@
4CA2EFA0280E37AC0044ACD8 /* TimelineView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CA2EF9F280E37AC0044ACD8 /* TimelineView.swift */; };
4CACA9D5280C31E100D9BBE8 /* ReplyView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CACA9D4280C31E100D9BBE8 /* ReplyView.swift */; };
4CACA9DC280C38C000D9BBE8 /* Profiles.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CACA9DB280C38C000D9BBE8 /* Profiles.swift */; };
4CD7641B28A1641400B6928F /* EndBlock.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CD7641A28A1641400B6928F /* EndBlock.swift */; };
4CE4F8CD281352B30009DFBB /* Notifications.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CE4F8CC281352B30009DFBB /* Notifications.swift */; };
4CE4F9DE2852768D00C00DD9 /* ConfigView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CE4F9DD2852768D00C00DD9 /* ConfigView.swift */; };
4CE4F9E1285287B800C00DD9 /* TextFieldAlert.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CE4F9E0285287B800C00DD9 /* TextFieldAlert.swift */; };
@ -202,6 +203,7 @@
4CA2EF9F280E37AC0044ACD8 /* TimelineView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineView.swift; sourceTree = "<group>"; };
4CACA9D4280C31E100D9BBE8 /* ReplyView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ReplyView.swift; sourceTree = "<group>"; };
4CACA9DB280C38C000D9BBE8 /* Profiles.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Profiles.swift; sourceTree = "<group>"; };
4CD7641A28A1641400B6928F /* EndBlock.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EndBlock.swift; sourceTree = "<group>"; };
4CE4F8CC281352B30009DFBB /* Notifications.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Notifications.swift; sourceTree = "<group>"; };
4CE4F9DD2852768D00C00DD9 /* ConfigView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConfigView.swift; sourceTree = "<group>"; };
4CE4F9E0285287B800C00DD9 /* TextFieldAlert.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TextFieldAlert.swift; sourceTree = "<group>"; };
@ -370,6 +372,7 @@
isa = PBXGroup;
children = (
4CE4F9E0285287B800C00DD9 /* TextFieldAlert.swift */,
4CD7641A28A1641400B6928F /* EndBlock.swift */,
);
path = Components;
sourceTree = "<group>";
@ -646,6 +649,7 @@
4C363A8828236948006E126D /* BlocksView.swift in Sources */,
4C75EFAF28049D350006080F /* NostrFilter.swift in Sources */,
4C363A9C282838B9006E126D /* EventRef.swift in Sources */,
4CD7641B28A1641400B6928F /* EndBlock.swift in Sources */,
4C8682872814DE470026224F /* ProfileView.swift in Sources */,
4C5F9114283D694D0052CD1C /* FollowTarget.swift in Sources */,
4C5C7E6A284EDE2E00A22DF5 /* SearchResultsView.swift in Sources */,

32
damus/Components/EndBlock.swift Normal file
View File

@ -0,0 +1,32 @@
//
// EndBlock.swift
// damus
//
// Created by William Casarin on 2022-08-08.
//
import SwiftUI
struct EndBlock: View {
let height: CGFloat
init () {
self.height = 80.0
}
init (height: Float) {
self.height = CGFloat(height)
}
var body: some View {
Color.white.opacity(0)
.id("endblock")
.frame(height: height)
}
}
struct EndBlock_Previews: PreviewProvider {
static var previews: some View {
EndBlock()
}
}

2
damus/Models/ThreadModel.swift
View File

@ -189,8 +189,10 @@ class ThreadModel: ObservableObject {
}
if done {
if (events.contains { ev in ev.id == initial_event.id }) {
loading = false
}
}
}
}

9
damus/Views/ChatroomView.swift
View File

@ -14,7 +14,7 @@ struct ChatroomView: View {
var body: some View {
ScrollViewReader { scroller in
ScrollView {
ScrollView(.vertical) {
LazyVStack(alignment: .leading) {
let count = thread.events.count
ForEach(Array(zip(thread.events, thread.events.indices)), id: \.0.id) { (ev, ind) in
@ -34,17 +34,20 @@ struct ChatroomView: View {
}
.environmentObject(thread)
}
}
EndBlock()
}
.onReceive(NotificationCenter.default.publisher(for: .select_quote)) { notif in
let ev = notif.object as! NostrEvent
if ev.id != thread.initial_event.id {
thread.set_active_event(ev, privkey: damus.keypair.privkey)
}
scroll_to_event(scroller: scroller, id: ev.id, delay: 0, animate: true, anchor: .top)
scroll_to_event(scroller: scroller, id: ev.id, delay: 0, animate: true)
}
.onAppear() {
scroll_to_event(scroller: scroller, id: thread.initial_event.id, delay: 0.3, animate: false, anchor: .bottom)
scroll_to_event(scroller: scroller, id: thread.initial_event.id, delay: 0.1, animate: false)
}
}
}

4
damus/Views/DMChatView.swift
View File

@ -21,9 +21,7 @@ struct DMChatView: View {
DMView(event: dms.events[ind], damus_state: damus_state)
.event_context_menu(ev, privkey: damus_state.keypair.privkey)
}
Color.white.opacity(0)
.id("endblock")
.frame(height: 80)
EndBlock()
}
}
.onAppear {

38
damus/Views/EventDetailView.swift
View File

@ -37,11 +37,11 @@ struct EventDetailView: View {
@StateObject var thread: ThreadModel
@State var collapsed: Bool = true
func toggle_collapse_thread(scroller: ScrollViewProxy, id mid: String?, animate: Bool = true, anchor: UnitPoint = .center) {
func toggle_collapse_thread(scroller: ScrollViewProxy, id mid: String?, animate: Bool = true) {
self.collapsed = !self.collapsed
if let id = mid {
if !self.collapsed {
scroll_to_event(scroller: scroller, id: id, delay: 0.1, animate: animate, anchor: anchor)
scroll_to_event(scroller: scroller, id: id, delay: 0.1, animate: animate)
}
}
}
@ -52,7 +52,7 @@ struct EventDetailView: View {
print("uncollapsing section at \(c.start) '\(ev.content.prefix(12))...'")
let start_id = ev.id
toggle_collapse_thread(scroller: scroller, id: start_id, animate: false, anchor: .top)
toggle_collapse_thread(scroller: scroller, id: start_id, animate: false)
}
func CollapsedEventView(_ cev: CollapsedEvent, scroller: ScrollViewProxy) -> some View {
@ -76,18 +76,17 @@ struct EventDetailView: View {
thread.set_active_event(ev, privkey: damus.keypair.privkey)
}
}
.onAppear() {
if highlight.is_main {
scroll_to_event(scroller: scroller, id: ev.id, delay: 0.5, animate: true)
}
}
}
}
}
var body: some View {
ScrollViewReader { proxy in
ScrollView {
if thread.loading {
ProgressView().progressViewStyle(.circular)
}
ScrollView(.vertical) {
let collapsed_events = calculated_collapsed_events(
privkey: damus.keypair.privkey,
collapsed: self.collapsed,
@ -97,12 +96,27 @@ struct EventDetailView: View {
ForEach(collapsed_events, id: \.id) { cev in
CollapsedEventView(cev, scroller: proxy)
}
EndBlock(height: 600)
}
.onChange(of: thread.loading) { val in
scroll_after_load(proxy)
}
.onAppear() {
scroll_after_load(proxy)
}
}
.navigationBarTitle("Thread")
}
func scroll_after_load(_ proxy: ScrollViewProxy) {
if !thread.loading {
let id = thread.initial_event.id
scroll_to_event(scroller: proxy, id: id, delay: 0.1, animate: false)
}
}
func toggle_thread_view() {
NotificationCenter.default.post(name: .toggle_thread_view, object: nil)
}
@ -273,14 +287,14 @@ func print_event(_ ev: NostrEvent) {
print(ev.description)
}
func scroll_to_event(scroller: ScrollViewProxy, id: String, delay: Double, animate: Bool, anchor: UnitPoint = .center) {
func scroll_to_event(scroller: ScrollViewProxy, id: String, delay: Double, animate: Bool) {
DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
if animate {
withAnimation {
scroller.scrollTo(id, anchor: anchor)
scroller.scrollTo(id, anchor: .top)
}
} else {
scroller.scrollTo(id, anchor: anchor)
scroller.scrollTo(id, anchor: .top)
}
}
}