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[WIP] Monoforums

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Isaac
2025-05-14 00:50:46 +08:00
parent 9e18743b1b
commit f90402102b
36 changed files with 1191 additions and 340 deletions
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203
submodules/Display/Source/ListView.swift
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@@ -9,6 +9,11 @@ private let insertionAnimationDuration: Double = 0.4
private struct VisibleHeaderNodeId: Hashable {
var id: ListViewItemNode.HeaderId
var affinity: Int
init(id: ListViewItemNode.HeaderId, affinity: Int) {
self.id = id
self.affinity = affinity
}
}
private final class ListViewBackingLayer: CALayer {
@@ -3871,23 +3876,84 @@ open class ListView: ASDisplayNode, ASScrollViewDelegate, ASGestureRecognizerDel
func addHeader(id: VisibleHeaderNodeId, upperBound: CGFloat, upperIndex: Int, upperBoundEdge: CGFloat, lowerBound: CGFloat, lowerIndex: Int, item: ListViewItemHeader, hasValidNodes: Bool) {
let itemHeaderHeight: CGFloat = item.height
let headerFrame: CGRect
let stickLocationDistanceFactor: CGFloat
let stickLocationDistance: CGFloat
var insertItemBelowOtherHeaders = false
var offsetByHeaderNodeId: ListViewItemNode.HeaderId?
var didOffsetByHeaderNode = false
var headerFrame: CGRect
let naturalY: CGFloat
var stickLocationDistanceFactor: CGFloat = 0.0
var stickLocationDistance: CGFloat
switch item.stickDirection {
case .top:
naturalY = lowerBound
headerFrame = CGRect(origin: CGPoint(x: 0.0, y: min(max(upperDisplayBound, upperBound), lowerBound - itemHeaderHeight)), size: CGSize(width: self.visibleSize.width, height: itemHeaderHeight))
stickLocationDistance = headerFrame.minY - upperBound
stickLocationDistanceFactor = max(0.0, min(1.0, stickLocationDistance / itemHeaderHeight))
case .topEdge:
naturalY = lowerBound
headerFrame = CGRect(origin: CGPoint(x: 0.0, y: min(max(upperDisplayBound, upperBoundEdge - itemHeaderHeight), lowerBound - itemHeaderHeight)), size: CGSize(width: self.visibleSize.width, height: itemHeaderHeight))
stickLocationDistance = headerFrame.minY - upperBoundEdge + itemHeaderHeight
stickLocationDistanceFactor = max(0.0, min(1.0, stickLocationDistance / itemHeaderHeight))
case .bottom:
naturalY = lowerBound
headerFrame = CGRect(origin: CGPoint(x: 0.0, y: max(upperBound, min(lowerBound, lowerDisplayBound) - itemHeaderHeight)), size: CGSize(width: self.visibleSize.width, height: itemHeaderHeight))
stickLocationDistance = lowerBound - headerFrame.maxY
stickLocationDistanceFactor = max(0.0, min(1.0, stickLocationDistance / itemHeaderHeight))
if let stackingId = item.stackingId {
insertItemBelowOtherHeaders = true
var naturalOverlapLowerBound: CGFloat = naturalY
do {
for (otherId, otherNode) in self.itemHeaderNodes {
if otherId.id.space == stackingId.space {
if !visibleHeaderNodes.contains(otherId) {
continue
}
if let otherNaturalOriginY = otherNode.naturalOriginY, otherNaturalOriginY == naturalY {
naturalOverlapLowerBound = otherNaturalOriginY - 7.0 - 20.0
break
}
}
}
}
for _ in 0 ..< 2 {
var mostOverlap: (CGRect, CGFloat, ListViewItemHeaderNode)?
for (otherId, otherNode) in self.itemHeaderNodes {
if otherId.id.space == stackingId.space {
if !visibleHeaderNodes.contains(otherId) {
continue
}
if headerFrame.intersects(otherNode.frame) {
let intersectionHeight = headerFrame.intersection(otherNode.frame).height
if intersectionHeight > 0.0 {
if let (currentOverlapFrame, _, _) = mostOverlap {
if headerFrame.minY < currentOverlapFrame.minY {
mostOverlap = (otherNode.frame, intersectionHeight, otherNode)
}
} else {
mostOverlap = (otherNode.frame, intersectionHeight, otherNode)
}
}
}
}
}
if let (mostOverlap, _, otherNode) = mostOverlap {
let originalY = headerFrame.origin.y
headerFrame.origin.y = min(headerFrame.origin.y, mostOverlap.minY - 7.0 - 20.0)
headerFrame.origin.y = max(upperBound, headerFrame.origin.y)
offsetByHeaderNodeId = otherNode.item?.id
didOffsetByHeaderNode = originalY != headerFrame.origin.y
}
}
stickLocationDistance = naturalOverlapLowerBound - headerFrame.maxY
stickLocationDistanceFactor = max(0.0, min(1.0, stickLocationDistance / itemHeaderHeight))
}
}
visibleHeaderNodes.append(id)
let initialHeaderNodeAlpha = self.itemHeaderNodesAlpha
@@ -3896,7 +3962,14 @@ open class ListView: ASDisplayNode, ASScrollViewDelegate, ASGestureRecognizerDel
headerNode = current
switch transition.0 {
case .immediate:
let previousFrame = headerNode.frame
headerNode.updateFrame(headerFrame, within: self.visibleSize)
if headerNode.offsetByHeaderNodeId != nil && offsetByHeaderNodeId != nil && headerNode.offsetByHeaderNodeId != offsetByHeaderNodeId {
let _ = didOffsetByHeaderNode
if !previousFrame.isEmpty {
ContainedViewLayoutTransition.animated(duration: 0.35, curve: .spring).animatePositionAdditive(node: headerNode, offset: CGPoint(x: 0.0, y: previousFrame.minY - headerFrame.minY))
}
}
case let .animated(duration, curve):
let previousFrame = headerNode.frame
headerNode.updateFrame(headerFrame, within: self.visibleSize)
@@ -3927,7 +4000,7 @@ open class ListView: ASDisplayNode, ASScrollViewDelegate, ASGestureRecognizerDel
item.updateNode(headerNode, previous: nil, next: nil)
headerNode.item = item
}
headerNode.updateLayoutInternal(size: headerFrame.size, leftInset: leftInset, rightInset: rightInset, transition: transition.0)
headerNode.updateLayoutInternal(size: headerFrame.size, leftInset: leftInset, rightInset: rightInset, transition: animateInsertion ? .immediate : transition.0)
headerNode.updateInternalStickLocationDistanceFactor(stickLocationDistanceFactor, animated: true)
headerNode.internalStickLocationDistance = stickLocationDistance
if !hasValidNodes && !headerNode.alpha.isZero {
@@ -3940,7 +4013,7 @@ open class ListView: ASDisplayNode, ASScrollViewDelegate, ASGestureRecognizerDel
headerNode.animateAdded(duration: 0.2)
}
}
headerNode.updateStickDistanceFactor(stickLocationDistanceFactor, transition: transition.0)
headerNode.updateStickDistanceFactor(stickLocationDistanceFactor, distance: stickLocationDistance, transition: transition.0)
} else {
headerNode = item.node(synchronousLoad: synchronousLoad)
headerNode.alpha = initialHeaderNodeAlpha
@@ -3950,10 +4023,28 @@ open class ListView: ASDisplayNode, ASScrollViewDelegate, ASGestureRecognizerDel
}
headerNode.updateFlashingOnScrolling(flashing, animated: false)
headerNode.frame = headerFrame
headerNode.updateLayoutInternal(size: headerFrame.size, leftInset: leftInset, rightInset: rightInset, transition: transition.0)
headerNode.updateLayoutInternal(size: headerFrame.size, leftInset: leftInset, rightInset: rightInset, transition: animateInsertion ? .immediate : transition.0)
headerNode.updateInternalStickLocationDistanceFactor(stickLocationDistanceFactor, animated: false)
self.itemHeaderNodes[id] = headerNode
if let verticalScrollIndicator = self.verticalScrollIndicator {
if insertItemBelowOtherHeaders {
var lowestHeaderNode: ASDisplayNode?
var lowestHeaderNodeIndex: Int?
for (_, headerNode) in self.itemHeaderNodes {
if let index = self.view.subviews.firstIndex(of: headerNode.view) {
if lowestHeaderNodeIndex == nil || index < lowestHeaderNodeIndex! {
lowestHeaderNodeIndex = index
lowestHeaderNode = headerNode
}
}
}
if let lowestHeaderNode {
self.insertSubnode(headerNode, belowSubnode: lowestHeaderNode)
} else if let verticalScrollIndicator = self.verticalScrollIndicator {
self.insertSubnode(headerNode, belowSubnode: verticalScrollIndicator)
} else {
self.addSubnode(headerNode)
}
} else if let verticalScrollIndicator = self.verticalScrollIndicator {
self.insertSubnode(headerNode, belowSubnode: verticalScrollIndicator)
} else {
self.addSubnode(headerNode)
@@ -3962,8 +4053,10 @@ open class ListView: ASDisplayNode, ASScrollViewDelegate, ASGestureRecognizerDel
headerNode.alpha = initialHeaderNodeAlpha
headerNode.animateAdded(duration: 0.2)
}
headerNode.updateStickDistanceFactor(stickLocationDistanceFactor, transition: .immediate)
headerNode.updateStickDistanceFactor(stickLocationDistanceFactor, distance: stickLocationDistance, transition: .immediate)
}
headerNode.offsetByHeaderNodeId = offsetByHeaderNodeId
headerNode.naturalOriginY = naturalY
var maxIntersectionHeight: (CGFloat, Int)?
for i in upperIndex ... lowerIndex {
let itemNode = self.itemNodes[i]
@@ -4008,53 +4101,65 @@ open class ListView: ASDisplayNode, ASScrollViewDelegate, ASGestureRecognizerDel
var previousHeaderBySpace: [AnyHashable: (id: VisibleHeaderNodeId, upperBound: CGFloat, upperBoundIndex: Int, upperBoundEdge: CGFloat, lowerBound: CGFloat, lowerBoundIndex: Int, item: ListViewItemHeader, hasValidNodes: Bool)] = [:]
for i in 0 ..< self.itemNodes.count {
let itemNode = self.itemNodes[i]
let itemFrame = itemNode.apparentFrame
let itemTopInset = itemNode.insets.top
var validItemHeaderSpaces: [AnyHashable] = []
if let itemHeaders = itemNode.headers() {
for itemHeader in itemHeaders {
guard let affinity = itemNode.headerSpaceAffinities[itemHeader.id] else {
assertionFailure()
continue
}
let headerId = VisibleHeaderNodeId(id: itemHeader.id, affinity: affinity)
validItemHeaderSpaces.append(itemHeader.id.space)
let itemMaxY: CGFloat
if itemHeader.stickOverInsets {
itemMaxY = itemFrame.maxY
} else {
itemMaxY = itemFrame.maxY - (self.rotated ? itemNode.insets.top : itemNode.insets.bottom)
}
if let (previousHeaderId, previousUpperBound, previousUpperIndex, previousUpperBoundEdge, previousLowerBound, previousLowerIndex, previousHeaderItem, hasValidNodes) = previousHeaderBySpace[itemHeader.id.space] {
if previousHeaderId == headerId {
previousHeaderBySpace[itemHeader.id.space] = (previousHeaderId, previousUpperBound, previousUpperIndex, previousUpperBoundEdge, itemMaxY, i, previousHeaderItem, hasValidNodes || itemNode.index != nil)
for phase in 0 ..< 2 {
for i in 0 ..< self.itemNodes.count {
let itemNode = self.itemNodes[i]
let itemFrame = itemNode.apparentFrame
let itemTopInset = itemNode.insets.top
var validItemHeaderSpaces: [AnyHashable] = []
if let itemHeaders = itemNode.headers() {
outerItemHeaders: for itemHeader in itemHeaders {
if phase == 0 {
if itemHeader.stackingId != nil {
continue outerItemHeaders
}
} else {
if itemHeader.stackingId == nil {
continue outerItemHeaders
}
}
guard let affinity = itemNode.headerSpaceAffinities[itemHeader.id] else {
assertionFailure()
continue
}
let headerId = VisibleHeaderNodeId(id: itemHeader.id, affinity: affinity)
validItemHeaderSpaces.append(itemHeader.id.space)
var itemMaxY: CGFloat
if itemHeader.stickOverInsets {
itemMaxY = itemFrame.maxY
} else {
itemMaxY = itemFrame.maxY - (self.rotated ? itemNode.insets.top : itemNode.insets.bottom)
}
if let (previousHeaderId, previousUpperBound, previousUpperIndex, previousUpperBoundEdge, previousLowerBound, previousLowerIndex, previousHeaderItem, hasValidNodes) = previousHeaderBySpace[itemHeader.id.space] {
if previousHeaderId == headerId {
previousHeaderBySpace[itemHeader.id.space] = (previousHeaderId, previousUpperBound, previousUpperIndex, previousUpperBoundEdge, itemMaxY, i, previousHeaderItem, hasValidNodes || itemNode.index != nil)
} else {
addHeader(id: previousHeaderId, upperBound: previousUpperBound, upperIndex: previousUpperIndex, upperBoundEdge: previousUpperBoundEdge, lowerBound: previousLowerBound, lowerIndex: previousLowerIndex, item: previousHeaderItem, hasValidNodes: hasValidNodes)
previousHeaderBySpace[itemHeader.id.space] = (headerId, itemFrame.minY, i, itemFrame.minY + itemTopInset, itemMaxY, i, itemHeader, itemNode.index != nil)
}
} else {
addHeader(id: previousHeaderId, upperBound: previousUpperBound, upperIndex: previousUpperIndex, upperBoundEdge: previousUpperBoundEdge, lowerBound: previousLowerBound, lowerIndex: previousLowerIndex, item: previousHeaderItem, hasValidNodes: hasValidNodes)
previousHeaderBySpace[itemHeader.id.space] = (headerId, itemFrame.minY, i, itemFrame.minY + itemTopInset, itemMaxY, i, itemHeader, itemNode.index != nil)
}
} else {
previousHeaderBySpace[itemHeader.id.space] = (headerId, itemFrame.minY, i, itemFrame.minY + itemTopInset, itemMaxY, i, itemHeader, itemNode.index != nil)
}
}
}
for (space, previousHeader) in previousHeaderBySpace {
if validItemHeaderSpaces.contains(space) {
continue
for (space, previousHeader) in previousHeaderBySpace {
if validItemHeaderSpaces.contains(space) {
continue
}
let (previousHeaderId, previousUpperBound, previousUpperIndex, previousUpperBoundEdge, previousLowerBound, previousLowerIndex, previousHeaderItem, hasValidNodes) = previousHeader
addHeader(id: previousHeaderId, upperBound: previousUpperBound, upperIndex: previousUpperIndex, upperBoundEdge: previousUpperBoundEdge, lowerBound: previousLowerBound, lowerIndex: previousLowerIndex, item: previousHeaderItem, hasValidNodes: hasValidNodes)
previousHeaderBySpace.removeValue(forKey: space)
}
let (previousHeaderId, previousUpperBound, previousUpperIndex, previousUpperBoundEdge, previousLowerBound, previousLowerIndex, previousHeaderItem, hasValidNodes) = previousHeader
addHeader(id: previousHeaderId, upperBound: previousUpperBound, upperIndex: previousUpperIndex, upperBoundEdge: previousUpperBoundEdge, lowerBound: previousLowerBound, lowerIndex: previousLowerIndex, item: previousHeaderItem, hasValidNodes: hasValidNodes)
previousHeaderBySpace.removeValue(forKey: space)
}
}