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Optimize image loading

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This commit is contained in:
Ali
2021-10-27 23:10:47 +04:00
parent eef25b4070
commit aebdefc477
3 changed files with 116 additions and 95 deletions
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27
submodules/TelegramUI/Sources/PeerInfo/Panes/PeerInfoVisualMediaPaneNode.swift
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@@ -1109,6 +1109,16 @@ private final class SparseItemGridBindingImpl: SparseItemGridBinding, ListShimme
return nil
}
private static let widthSpecs: ([Int], [Int]) = {
let list: [(Int, Int)] = [
(50, 64),
(100, 150),
(140, 200),
(Int.max, 280)
]
return (list.map(\.0), list.map(\.1))
}()
func bindLayers(items: [SparseItemGrid.Item], layers: [SparseItemGridDisplayItem], synchronous: Bool) {
for i in 0 ..< items.count {
guard let item = items[i] as? VisualMediaItem else {
@@ -1138,15 +1148,12 @@ private final class SparseItemGridBindingImpl: SparseItemGridBinding, ListShimme
continue
}
let imageWidthSpec: Int
if layer.bounds.width <= 50 {
imageWidthSpec = 64
} else if layer.bounds.width <= 100 {
imageWidthSpec = 150
} else if layer.bounds.width <= 140 {
imageWidthSpec = 200
} else {
imageWidthSpec = 280
var imageWidthSpec: Int = SparseItemGridBindingImpl.widthSpecs.1[0]
for i in 0 ..< SparseItemGridBindingImpl.widthSpecs.0.count {
if Int(layer.bounds.width) <= SparseItemGridBindingImpl.widthSpecs.0[i] {
imageWidthSpec = SparseItemGridBindingImpl.widthSpecs.1[i]
break
}
}
let message = item.message
@@ -1163,7 +1170,7 @@ private final class SparseItemGridBindingImpl: SparseItemGridBinding, ListShimme
}
if let selectedMedia = selectedMedia {
if let result = directMediaImageCache.getImage(message: message, media: selectedMedia, width: imageWidthSpec, synchronous: synchronous) {
if let result = directMediaImageCache.getImage(message: message, media: selectedMedia, width: imageWidthSpec, possibleWidths: SparseItemGridBindingImpl.widthSpecs.1, synchronous: synchronous) {
if let image = result.image {
layer.contents = image.cgImage
layer.hasContents = true