InstantPage V2: render collage & slideshow blocks
Port V1's collage and slideshow InstantPage blocks into the V2 renderer (previously grey-box placeholders). - Collage: layoutCollage computes the mosaic (MosaicLayout, the grouped-message engine) over inner image/video sizes and flattens it into existing top-level .mediaImage/.mediaVideo items + a caption, so gallery / reveal-cost / registry / hidden-media all handle the cells with no collage-specific code. Right-edge cells bleed 4pt for the bubble's rounded clip. - Slideshow: a new .slideshow laid-out item + InstantPageV2SlideshowView, an eager paged carousel (UIScrollView + PageControlNode) of InstantPageImageNode pages, wired through frame/offsetBy/collectMedias/stableId/reuse/makeItemView and the reveal-cost non-text list. - Gallery transitions generalized onto InstantPageItemView via instantPageTransitionNode(for:)/instantPageUpdateHiddenMedia(_:) (default nil/no-op; explicit per-class witnesses on the 4 static media views, the slideshow forwards to its live pages) so the multi-media slideshow can participate alongside single-media views. Docs: document both in docs/instantpage-richtext.md. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
isaac
parent
071799368d
commit
ab68a1af82
6 changed files with 415 additions and 27 deletions
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@ -1,5 +1,6 @@
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import Foundation
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import UIKit
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import AsyncDisplayKit
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import Display
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import CheckNode
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import SwiftSignalKit
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@ -35,7 +36,7 @@ public enum InstantPageV2StableItemId: Hashable {
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}
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public enum InstantPageV2ItemKind: Hashable {
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case text, codeBlock, divider, listMarker, blockQuoteBar, shape, mediaPlaceholder, table, anchor, formula
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case text, codeBlock, divider, listMarker, blockQuoteBar, shape, mediaPlaceholder, table, anchor, formula, slideshow
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}
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// MARK: - Render context
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@ -679,6 +680,10 @@ public final class InstantPageV2View: UIView {
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guard let v = existingView as? InstantPageV2ThinkingView else { return nil }
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v.update(item: thinking, theme: theme)
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return v
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case let .slideshow(slideshow):
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guard let v = existingView as? InstantPageV2SlideshowView, let rc = self.renderContext else { return nil }
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v.update(item: slideshow, theme: theme, renderContext: rc)
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return v
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}
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}
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@ -700,6 +705,7 @@ public final class InstantPageV2View: UIView {
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case .anchor: return .positional(.anchor, position)
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case .formula: return .positional(.formula, position)
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case .thinking: return .thinking(position)
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case .slideshow: return .positional(.slideshow, position)
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}
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}
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@ -724,13 +730,8 @@ public final class InstantPageV2View: UIView {
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guard let wrapperBox = self.trueRegistryRoot.mediaRegistry[media.index], let wrapper = wrapperBox.value else {
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return nil
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}
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let imageNode: InstantPageImageNode? =
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(wrapper as? InstantPageV2MediaImageView)?.wrappedNode
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?? (wrapper as? InstantPageV2MediaVideoView)?.wrappedNode
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?? (wrapper as? InstantPageV2MediaMapView)?.wrappedNode
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?? (wrapper as? InstantPageV2MediaCoverImageView)?.wrappedNode
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guard let imageNode else { return nil }
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guard let transitionNode = imageNode.transitionNode(media: media) else { return nil }
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guard let itemView = wrapper as? InstantPageItemView else { return nil }
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guard let transitionNode = itemView.instantPageTransitionNode(for: media) else { return nil }
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return GalleryTransitionArguments(transitionNode: transitionNode, addToTransitionSurface: addToTransitionSurface)
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}
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@ -739,10 +740,7 @@ public final class InstantPageV2View: UIView {
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func applyHiddenMedia(_ hidden: InstantPageMedia?) {
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for (_, weakBox) in self.trueRegistryRoot.mediaRegistry {
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guard let wrapper = weakBox.value else { continue }
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if let v = wrapper as? InstantPageV2MediaImageView { v.wrappedNode.updateHiddenMedia(media: hidden) }
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if let v = wrapper as? InstantPageV2MediaVideoView { v.wrappedNode.updateHiddenMedia(media: hidden) }
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if let v = wrapper as? InstantPageV2MediaMapView { v.wrappedNode.updateHiddenMedia(media: hidden) }
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if let v = wrapper as? InstantPageV2MediaCoverImageView { v.wrappedNode.updateHiddenMedia(media: hidden) }
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(wrapper as? InstantPageItemView)?.instantPageUpdateHiddenMedia(hidden)
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}
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}
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@ -800,6 +798,12 @@ public final class InstantPageV2View: UIView {
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return InstantPageV2FormulaView(item: formula, theme: theme)
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case let .thinking(thinking):
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return InstantPageV2ThinkingView(item: thinking, theme: theme)
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case let .slideshow(slideshow):
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if let renderContext = self.renderContext {
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return InstantPageV2SlideshowView(item: slideshow, renderContext: renderContext, theme: theme)
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} else {
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return InstantPageV2MediaPlaceholderView(item: InstantPageV2MediaPlaceholderItem(frame: slideshow.frame, kind: .slideshow, cornerRadius: 0.0), theme: theme)
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}
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}
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}
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@ -853,10 +857,18 @@ protocol InstantPageItemView: UIView {
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var itemFrame: CGRect { get }
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/// Recursion hook for nested layouts (details body, table cells, table title).
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var subLayoutView: InstantPageV2View? { get }
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/// Gallery open: the transition source for `media` if this view (or a descendant) shows it.
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/// Default nil (non-media views). Media views forward to their wrapped `InstantPageImageNode`;
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/// the slideshow forwards to its matching page.
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func instantPageTransitionNode(for media: InstantPageMedia) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))?
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/// Gallery hidden-media tick: hide/show the source for `media`. Default no-op.
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func instantPageUpdateHiddenMedia(_ media: InstantPageMedia?)
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}
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extension InstantPageItemView {
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var subLayoutView: InstantPageV2View? { return nil }
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func instantPageTransitionNode(for media: InstantPageMedia) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? { return nil }
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func instantPageUpdateHiddenMedia(_ media: InstantPageMedia?) { }
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}
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// MARK: - Text view (port of V1 InstantPageTextItem.drawInTile)
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@ -6,6 +6,7 @@ import TelegramPresentationData
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import TelegramUIPreferences
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import TextFormat
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import TelegramStringFormatting
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import MosaicLayout
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// MARK: - Public layout data types
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@ -49,6 +50,7 @@ public struct InstantPageV2Layout {
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case let .mediaVideo(m): result.append(m.media)
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case let .mediaMap(m): result.append(m.media)
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case let .mediaCoverImage(m): result.append(m.media)
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case let .slideshow(s): result.append(contentsOf: s.medias)
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case let .details(d):
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if let inner = d.innerLayout {
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collectMedias(in: inner.items, into: &result)
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@ -86,6 +88,7 @@ public enum InstantPageV2LaidOutItem {
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case mediaCoverImage(InstantPageV2MediaCoverImageItem)
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case formula(InstantPageV2FormulaItem)
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case thinking(InstantPageV2ThinkingItem)
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case slideshow(InstantPageV2SlideshowItem)
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public var frame: CGRect {
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switch self {
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@ -105,6 +108,7 @@ public enum InstantPageV2LaidOutItem {
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case let .mediaCoverImage(item): return item.frame
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case let .formula(item): return item.frame
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case let .thinking(item): return item.frame
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case let .slideshow(item): return item.frame
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}
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}
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@ -129,6 +133,7 @@ public enum InstantPageV2LaidOutItem {
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case var .mediaCoverImage(item): item.frame = item.frame.offsetBy(dx: delta.x, dy: delta.y); return .mediaCoverImage(item)
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case var .formula(item): item.frame = item.frame.offsetBy(dx: delta.x, dy: delta.y); return .formula(item)
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case var .thinking(item): item.frame = item.frame.offsetBy(dx: delta.x, dy: delta.y); return .thinking(item)
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case var .slideshow(item): item.frame = item.frame.offsetBy(dx: delta.x, dy: delta.y); return .slideshow(item)
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}
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}
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}
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@ -290,6 +295,18 @@ public struct InstantPageV2MediaPlaceholderItem {
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public let cornerRadius: CGFloat
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}
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public struct InstantPageV2SlideshowItem {
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public var frame: CGRect
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public let medias: [InstantPageMedia]
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public let webPage: TelegramMediaWebpage
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public init(frame: CGRect, medias: [InstantPageMedia], webPage: TelegramMediaWebpage) {
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self.frame = frame
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self.medias = medias
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self.webPage = webPage
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}
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}
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public struct InstantPageV2DetailsItem {
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public var frame: CGRect
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public let index: Int
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@ -822,17 +839,13 @@ private func layoutBlock(
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isCover: false, cornerRadius: 8.0, flush: true, boundingWidth: boundingWidth,
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horizontalInset: horizontalInset, context: &context)
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case let .collage(_, caption):
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return layoutMediaWithCaption(kind: .collage,
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naturalSize: CGSize(width: boundingWidth, height: 240.0), caption: caption,
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isCover: false, cornerRadius: 8.0, flush: true, boundingWidth: boundingWidth,
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horizontalInset: horizontalInset, context: &context)
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case let .collage(items, caption):
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return layoutCollage(items: items, caption: caption, isCover: isCover,
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boundingWidth: boundingWidth, horizontalInset: horizontalInset, context: &context)
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case let .slideshow(_, caption):
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return layoutMediaWithCaption(kind: .slideshow,
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naturalSize: CGSize(width: boundingWidth, height: 240.0), caption: caption,
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isCover: false, cornerRadius: 8.0, flush: true, boundingWidth: boundingWidth,
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horizontalInset: horizontalInset, context: &context)
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case let .slideshow(items, caption):
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return layoutSlideshow(items: items, caption: caption,
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boundingWidth: boundingWidth, horizontalInset: horizontalInset, context: &context)
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case let .channelBanner(channel):
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if channel == nil { return [] }
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@ -1763,6 +1776,132 @@ private func layoutTypedMediaWithCaption(
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return result
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}
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/// Lays out an `InstantPageBlock.collage(items:caption:)`. Mirrors V1
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/// (InstantPageLayout.swift:692-727): compute a mosaic over the inner image/video sizes, then emit
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/// one existing typed media item per cell at its mosaic frame, flush (cornerRadius 0) so the bubble's
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/// rounded clip handles the outer corners and the 1pt mosaic spacing handles the interior gaps. A
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/// single caption renders below the whole mosaic. Cells are top-level `.mediaImage`/`.mediaVideo`
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/// items, so gallery / reveal / registry / hidden-media all work with no extra code.
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private func layoutCollage(
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items innerBlocks: [InstantPageBlock],
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caption: InstantPageCaption,
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isCover: Bool,
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boundingWidth: CGFloat,
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horizontalInset: CGFloat,
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context: inout LayoutContext
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) -> [InstantPageV2LaidOutItem] {
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// 1. One size per inner block (zero for unresolved — V1 still reserves a mosaic slot).
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var itemSizes: [CGSize] = []
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for block in innerBlocks {
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switch block {
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case let .image(id, _, _, _):
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if case let .image(image) = context.media[id], let largest = largestImageRepresentation(image.representations) {
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itemSizes.append(CGSize(width: CGFloat(largest.dimensions.width), height: CGFloat(largest.dimensions.height)))
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} else {
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itemSizes.append(CGSize())
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}
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case let .video(id, _, _, _):
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if case let .file(file) = context.media[id], let dimensions = file.dimensions {
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itemSizes.append(CGSize(width: CGFloat(dimensions.width), height: CGFloat(dimensions.height)))
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} else {
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itemSizes.append(CGSize())
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}
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default:
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itemSizes.append(CGSize())
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}
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}
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// 2. Mosaic geometry — the same engine V1 uses.
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let (mosaic, mosaicSize) = chatMessageBubbleMosaicLayout(maxSize: CGSize(width: boundingWidth, height: boundingWidth), itemSizes: itemSizes)
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// 3. One typed media item per resolvable cell, at its mosaic frame.
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var result: [InstantPageV2LaidOutItem] = []
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let webpage = context.webpage
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for (i, block) in innerBlocks.enumerated() {
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guard i < mosaic.count else { break }
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let (cellFrame, position) = mosaic[i]
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// Right-edge cells bleed 4pt so the bubble's rounded clip leaves no trailing sliver.
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var frame = cellFrame
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if position.contains(.right) {
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frame.size.width += instantPageV2MediaEdgeBleed
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}
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switch block {
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case let .image(id, blockCaption, url, webpageId):
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guard case let .image(image) = context.media[id] else { continue }
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let mediaIndex = context.mediaIndexCounter
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context.mediaIndexCounter += 1
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let mediaUrl: InstantPageUrlItem? = url.flatMap { InstantPageUrlItem(url: $0, webpageId: webpageId) }
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let media = InstantPageMedia(index: mediaIndex, media: .image(image), url: mediaUrl, caption: blockCaption.text, credit: blockCaption.credit)
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result.append(.mediaImage(InstantPageV2MediaImageItem(frame: frame, cornerRadius: 0.0, media: media, webPage: webpage, attributes: [])))
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case let .video(id, blockCaption, _, _):
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guard case let .file(file) = context.media[id] else { continue }
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let mediaIndex = context.mediaIndexCounter
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context.mediaIndexCounter += 1
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let media = InstantPageMedia(index: mediaIndex, media: .file(file), url: nil, caption: blockCaption.text, credit: blockCaption.credit)
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result.append(.mediaVideo(InstantPageV2MediaVideoItem(frame: frame, cornerRadius: 0.0, media: media, webPage: webpage, attributes: [])))
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default:
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continue
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}
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}
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// 4. Caption below the mosaic.
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let (captionItems, captionHeight) = layoutCaptionAndCredit(caption, offset: mosaicSize.height, boundingWidth: boundingWidth, horizontalInset: horizontalInset, context: &context)
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result.append(contentsOf: captionItems)
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// Cover-caption padding parity with layoutTypedMediaWithCaption.
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if isCover && captionHeight > 0.0 {
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if let lastIndex = result.lastIndex(where: { if case .text = $0 { return true } else { return false } }) {
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if case var .text(lastText) = result[lastIndex] {
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lastText.frame = CGRect(origin: lastText.frame.origin, size: CGSize(width: lastText.frame.width, height: lastText.frame.height + 14.0))
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result[lastIndex] = .text(lastText)
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}
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}
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}
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return result
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}
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/// Lays out an `InstantPageBlock.slideshow(items:caption:)`. Mirrors V1
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/// (InstantPageLayout.swift:809-843): collect the inner image medias, size the block to the tallest
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/// image fitted into the bounding width (cap 1200), emit a single full-width slideshow carousel item,
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/// caption below. Only `.image` inner blocks contribute (matches V1).
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private func layoutSlideshow(
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items innerBlocks: [InstantPageBlock],
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caption: InstantPageCaption,
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boundingWidth: CGFloat,
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horizontalInset: CGFloat,
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context: inout LayoutContext
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) -> [InstantPageV2LaidOutItem] {
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var medias: [InstantPageMedia] = []
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var height: CGFloat = 0.0
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for block in innerBlocks {
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switch block {
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case let .image(id, blockCaption, url, webpageId):
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if case let .image(image) = context.media[id], let imageSize = largestImageRepresentation(image.representations)?.dimensions {
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let mediaIndex = context.mediaIndexCounter
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context.mediaIndexCounter += 1
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let filledSize = imageSize.cgSize.fitted(CGSize(width: boundingWidth, height: 1200.0))
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height = max(height, filledSize.height)
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let mediaUrl: InstantPageUrlItem? = url.flatMap { InstantPageUrlItem(url: $0, webpageId: webpageId) }
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medias.append(InstantPageMedia(index: mediaIndex, media: .image(image), url: mediaUrl, caption: blockCaption.text, credit: blockCaption.credit))
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}
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default:
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break
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}
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}
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var result: [InstantPageV2LaidOutItem] = []
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result.append(.slideshow(InstantPageV2SlideshowItem(
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frame: CGRect(x: 0.0, y: 0.0, width: boundingWidth, height: height),
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medias: medias,
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webPage: context.webpage
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)))
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let (captionItems, _) = layoutCaptionAndCredit(caption, offset: height, boundingWidth: boundingWidth, horizontalInset: horizontalInset, context: &context)
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result.append(contentsOf: captionItems)
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return result
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}
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private func layoutMediaWithCaption(
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kind: InstantPageV2MediaPlaceholderKind,
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naturalSize: CGSize,
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@ -19,7 +19,7 @@ private final class WrapperRef {
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// Hosts a V1 `InstantPageImageNode` inside a V2 UIView wrapper. The caller sizes its own
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// frame from `item.frame` and adds the returned node's view as a subview.
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private func makeMediaWrapper(
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func makeMediaWrapper(
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frame: CGRect,
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media: InstantPageMedia,
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webPage: TelegramMediaWebpage,
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@ -68,14 +68,14 @@ private func findEnclosingV2View(from start: UIView?) -> InstantPageV2View? {
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// its `rootMediaRegistryHost` chain transitively (nested details blocks can leave an inner
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// body's host pointing at an intermediate body — see `trueRegistryRoot`). No-op if the wrapper
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// isn't yet attached to a V2View ancestor.
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private func registerInRootRegistry(wrapper: UIView, mediaIndex: Int) {
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func registerInRootRegistry(wrapper: UIView, mediaIndex: Int) {
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guard let v2 = findEnclosingV2View(from: wrapper.superview) else { return }
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v2.trueRegistryRoot.mediaRegistry[mediaIndex] = Weak(wrapper)
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}
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// Routes a tap on `tapped` through `openInstantPageMedia`, sourcing sibling medias from the
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// root V2View's `currentLayout`. No-op if the wrapper isn't currently in a V2View tree.
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private func handleOpenMediaTap(
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func handleOpenMediaTap(
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tapped: InstantPageMedia,
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wrapper: UIView,
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renderContext: InstantPageV2RenderContext
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@ -164,6 +164,14 @@ final class InstantPageV2MediaImageView: UIView, InstantPageItemView {
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let strings = renderContext.context.sharedContext.currentPresentationData.with { $0 }.strings
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self.wrappedNode.update(strings: strings, theme: theme)
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}
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func instantPageTransitionNode(for media: InstantPageMedia) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? {
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return self.wrappedNode.transitionNode(media: media)
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}
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func instantPageUpdateHiddenMedia(_ media: InstantPageMedia?) {
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self.wrappedNode.updateHiddenMedia(media: media)
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}
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}
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final class InstantPageV2MediaVideoView: UIView, InstantPageItemView {
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@ -219,6 +227,14 @@ final class InstantPageV2MediaVideoView: UIView, InstantPageItemView {
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let strings = renderContext.context.sharedContext.currentPresentationData.with { $0 }.strings
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self.wrappedNode.update(strings: strings, theme: theme)
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}
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func instantPageTransitionNode(for media: InstantPageMedia) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? {
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return self.wrappedNode.transitionNode(media: media)
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}
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func instantPageUpdateHiddenMedia(_ media: InstantPageMedia?) {
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self.wrappedNode.updateHiddenMedia(media: media)
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}
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}
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final class InstantPageV2MediaMapView: UIView, InstantPageItemView {
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@ -274,6 +290,14 @@ final class InstantPageV2MediaMapView: UIView, InstantPageItemView {
|
|||
let strings = renderContext.context.sharedContext.currentPresentationData.with { $0 }.strings
|
||||
self.wrappedNode.update(strings: strings, theme: theme)
|
||||
}
|
||||
|
||||
func instantPageTransitionNode(for media: InstantPageMedia) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? {
|
||||
return self.wrappedNode.transitionNode(media: media)
|
||||
}
|
||||
|
||||
func instantPageUpdateHiddenMedia(_ media: InstantPageMedia?) {
|
||||
self.wrappedNode.updateHiddenMedia(media: media)
|
||||
}
|
||||
}
|
||||
|
||||
final class InstantPageV2MediaCoverImageView: UIView, InstantPageItemView {
|
||||
|
|
@ -329,4 +353,12 @@ final class InstantPageV2MediaCoverImageView: UIView, InstantPageItemView {
|
|||
let strings = renderContext.context.sharedContext.currentPresentationData.with { $0 }.strings
|
||||
self.wrappedNode.update(strings: strings, theme: theme)
|
||||
}
|
||||
|
||||
func instantPageTransitionNode(for media: InstantPageMedia) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? {
|
||||
return self.wrappedNode.transitionNode(media: media)
|
||||
}
|
||||
|
||||
func instantPageUpdateHiddenMedia(_ media: InstantPageMedia?) {
|
||||
self.wrappedNode.updateHiddenMedia(media: media)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -334,7 +334,7 @@ private func computeEntries(items: [InstantPageV2LaidOutItem], cursor: inout Int
|
|||
// positions are identical whether or not thinking blocks are present, so adding/
|
||||
// removing a thinking block never jumps the answer's reveal position.
|
||||
entries.append(.thinking(start: cursor))
|
||||
case .formula, .mediaImage, .mediaVideo, .mediaMap, .mediaCoverImage, .mediaPlaceholder,
|
||||
case .formula, .mediaImage, .mediaVideo, .mediaMap, .mediaCoverImage, .mediaPlaceholder, .slideshow,
|
||||
.divider, .listMarker, .blockQuoteBar, .shape, .anchor:
|
||||
let start = cursor
|
||||
cursor += itemWidthCost(item)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,183 @@
|
|||
import Foundation
|
||||
import UIKit
|
||||
import AsyncDisplayKit
|
||||
import Display
|
||||
import AccountContext
|
||||
import TelegramCore
|
||||
import TelegramPresentationData
|
||||
|
||||
// A paged carousel for an `InstantPageBlock.slideshow`. Ports V1's InstantPageSlideshowNode /
|
||||
// InstantPageSlideshowPagerNode (InstantPageSlideshowItemNode.swift), simplified to create all pages
|
||||
// eagerly (slideshows are short; this avoids V1's central±1 index bookkeeping and makes the gallery
|
||||
// transition source available for every page). Each image page hosts an `InstantPageImageNode` exactly
|
||||
// like the static media views; non-image medias render an empty page (matches V1).
|
||||
final class InstantPageV2SlideshowView: UIView, InstantPageItemView, UIScrollViewDelegate {
|
||||
private(set) var item: InstantPageV2SlideshowItem
|
||||
var itemFrame: CGRect { return self.item.frame }
|
||||
|
||||
private let renderContext: InstantPageV2RenderContext
|
||||
private var theme: InstantPageTheme
|
||||
|
||||
private let scrollView: UIScrollView
|
||||
private let pageControlNode: PageControlNode
|
||||
|
||||
// One wrapper view per media (so page count stays aligned with the page control). `pageImageNodes`
|
||||
// holds only the real image nodes; it may be shorter than `pageViews` if a non-image media appears
|
||||
// (which `layoutSlideshow` currently filters out). Nothing relies on positional correspondence.
|
||||
private var pageViews: [UIView] = []
|
||||
private var pageImageNodes: [InstantPageImageNode] = []
|
||||
|
||||
init(item: InstantPageV2SlideshowItem, renderContext: InstantPageV2RenderContext, theme: InstantPageTheme) {
|
||||
self.item = item
|
||||
self.renderContext = renderContext
|
||||
self.theme = theme
|
||||
self.scrollView = UIScrollView()
|
||||
self.pageControlNode = PageControlNode(dotColor: .white, inactiveDotColor: UIColor(white: 1.0, alpha: 0.5))
|
||||
|
||||
super.init(frame: item.frame)
|
||||
|
||||
self.backgroundColor = theme.panelSecondaryColor // structural
|
||||
self.clipsToBounds = true // structural
|
||||
|
||||
self.scrollView.isPagingEnabled = true
|
||||
self.scrollView.showsHorizontalScrollIndicator = false
|
||||
self.scrollView.showsVerticalScrollIndicator = false
|
||||
self.scrollView.scrollsToTop = false
|
||||
if #available(iOS 11.0, *) {
|
||||
self.scrollView.contentInsetAdjustmentBehavior = .never
|
||||
}
|
||||
self.scrollView.delegate = self
|
||||
self.addSubview(self.scrollView) // structural
|
||||
|
||||
self.pageControlNode.isUserInteractionEnabled = false
|
||||
self.addSubview(self.pageControlNode.view) // structural
|
||||
|
||||
self.rebuildPages()
|
||||
}
|
||||
|
||||
@available(*, unavailable)
|
||||
required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") }
|
||||
|
||||
private func rebuildPages() {
|
||||
for view in self.pageViews {
|
||||
view.removeFromSuperview()
|
||||
}
|
||||
self.pageViews = []
|
||||
self.pageImageNodes = []
|
||||
|
||||
let renderContext = self.renderContext
|
||||
// The image node owns this closure, and is owned (transitively) by self — capture weakly.
|
||||
let openMedia: (InstantPageMedia) -> Void = { [weak self] tapped in
|
||||
guard let self else { return }
|
||||
handleOpenMediaTap(tapped: tapped, wrapper: self, renderContext: renderContext)
|
||||
}
|
||||
|
||||
for media in self.item.medias {
|
||||
let pageView = UIView()
|
||||
pageView.clipsToBounds = true
|
||||
if case .image = media.media {
|
||||
let node = makeMediaWrapper(
|
||||
frame: CGRect(origin: .zero, size: self.item.frame.size),
|
||||
media: media,
|
||||
webPage: self.item.webPage,
|
||||
attributes: [],
|
||||
renderContext: self.renderContext,
|
||||
theme: self.theme,
|
||||
openMedia: openMedia,
|
||||
longPressMedia: { _ in }
|
||||
)
|
||||
pageView.addSubview(node.view)
|
||||
self.pageImageNodes.append(node)
|
||||
}
|
||||
// Non-image medias (none in practice — layoutSlideshow filters to images) get an empty page
|
||||
// to keep page indices aligned with the page control.
|
||||
self.scrollView.addSubview(pageView)
|
||||
self.pageViews.append(pageView)
|
||||
}
|
||||
|
||||
self.pageControlNode.pagesCount = self.item.medias.count
|
||||
self.pageControlNode.setPage(0.0)
|
||||
// Re-register media indices when rebuilding while already on-window (positional reuse with
|
||||
// changed content); no-ops before the view is attached, where didMoveToWindow handles it.
|
||||
self.registerMedias()
|
||||
self.setNeedsLayout()
|
||||
}
|
||||
|
||||
private func registerMedias() {
|
||||
guard self.window != nil else { return }
|
||||
// Register under every contained media index so transitionArgsFor(media) can find this view.
|
||||
for media in self.item.medias {
|
||||
registerInRootRegistry(wrapper: self, mediaIndex: media.index)
|
||||
}
|
||||
}
|
||||
|
||||
override func didMoveToWindow() {
|
||||
super.didMoveToWindow()
|
||||
self.registerMedias()
|
||||
}
|
||||
|
||||
override func layoutSubviews() {
|
||||
super.layoutSubviews()
|
||||
let size = self.bounds.size
|
||||
guard size.width > 0.0, size.height > 0.0 else { return }
|
||||
|
||||
self.scrollView.frame = CGRect(origin: .zero, size: size)
|
||||
for (i, pageView) in self.pageViews.enumerated() {
|
||||
pageView.frame = CGRect(x: CGFloat(i) * size.width, y: 0.0, width: size.width, height: size.height)
|
||||
}
|
||||
for node in self.pageImageNodes {
|
||||
node.frame = CGRect(origin: .zero, size: size)
|
||||
}
|
||||
self.scrollView.contentSize = CGSize(width: CGFloat(self.pageViews.count) * size.width, height: size.height)
|
||||
|
||||
self.pageControlNode.layer.transform = CATransform3DIdentity
|
||||
self.pageControlNode.frame = CGRect(x: 0.0, y: size.height - 20.0, width: size.width, height: 20.0)
|
||||
let maxWidth = size.width - 36.0
|
||||
let pageControlSize = self.pageControlNode.calculateSizeThatFits(size)
|
||||
if pageControlSize.width > maxWidth, pageControlSize.width > 0.0 {
|
||||
let scale = maxWidth / pageControlSize.width
|
||||
self.pageControlNode.layer.transform = CATransform3DMakeScale(scale, scale, 1.0)
|
||||
}
|
||||
}
|
||||
|
||||
func scrollViewDidScroll(_ scrollView: UIScrollView) {
|
||||
let width = self.bounds.size.width
|
||||
guard width > 0.0, !self.item.medias.isEmpty else { return }
|
||||
let page = Int((scrollView.contentOffset.x + width / 2.0) / width)
|
||||
let clamped = max(0, min(self.item.medias.count - 1, page))
|
||||
self.pageControlNode.setPage(CGFloat(clamped))
|
||||
}
|
||||
|
||||
func update(item: InstantPageV2SlideshowItem, theme: InstantPageTheme, renderContext: InstantPageV2RenderContext) {
|
||||
let mediasChanged = self.item.medias.map { $0.index } != item.medias.map { $0.index }
|
||||
self.item = item
|
||||
self.theme = theme
|
||||
self.backgroundColor = theme.panelSecondaryColor
|
||||
if mediasChanged {
|
||||
self.rebuildPages()
|
||||
} else {
|
||||
let strings = renderContext.context.sharedContext.currentPresentationData.with { $0 }.strings
|
||||
for node in self.pageImageNodes {
|
||||
node.update(strings: strings, theme: theme)
|
||||
}
|
||||
}
|
||||
self.setNeedsLayout()
|
||||
}
|
||||
|
||||
// MARK: InstantPageItemView gallery hooks
|
||||
|
||||
func instantPageTransitionNode(for media: InstantPageMedia) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? {
|
||||
for node in self.pageImageNodes {
|
||||
if let transition = node.transitionNode(media: media) {
|
||||
return transition
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func instantPageUpdateHiddenMedia(_ media: InstantPageMedia?) {
|
||||
for node in self.pageImageNodes {
|
||||
node.updateHiddenMedia(media: media)
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue