Replace FilePreviewScreen with InteractiveQuickLook. (#1187)

* Replace FilePreviewScreen with InteractiveQuickLook.

- Allows full screen presentation.
- Allows dismiss gesture to work.
- Presentation looks much better on macOS.
This commit is contained in:
Doug
2023-06-28 15:32:16 +01:00
committed by GitHub
parent 908b368680
commit afbb0a8260
14 changed files with 147 additions and 363 deletions
@@ -1,101 +0,0 @@
//
// Copyright 2022 New Vector Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
import QuickLook
import SwiftUI
import UIKit
struct FilePreviewScreen: View {
@ObservedObject var context: FilePreviewScreenViewModel.Context
var body: some View {
ZStack(alignment: .leading) {
PreviewView(context: context,
fileURL: context.viewState.mediaFile.url,
title: context.viewState.title)
.ignoresSafeArea(edges: .bottom)
// Drop a random view on top to make QLPreviewController stop
// swallowing all gestures and allow swiping backwards
Rectangle()
.frame(maxWidth: 20.0)
.foregroundColor(.red)
.opacity(0.005)
.ignoresSafeArea()
}
}
}
private struct PreviewView: UIViewControllerRepresentable {
let context: FilePreviewScreenViewModel.Context
let fileURL: URL
let title: String?
func makeUIViewController(context: Context) -> UINavigationController {
let controller = QLPreviewController()
controller.dataSource = context.coordinator
return UINavigationController(rootViewController: controller)
}
func updateUIViewController(_ uiViewController: UINavigationController, context: Context) { }
func makeCoordinator() -> Coordinator {
Coordinator(view: self)
}
class Coordinator: NSObject, QLPreviewControllerDataSource {
let view: PreviewView
init(view: PreviewView) {
self.view = view
}
@objc func done() {
Task { await view.context.send(viewAction: .cancel) }
}
// MARK: - QLPreviewControllerDataSource
func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
1
}
func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
PreviewItem(previewItemURL: view.fileURL, previewItemTitle: view.title)
}
}
}
private class PreviewItem: NSObject, QLPreviewItem {
var previewItemURL: URL?
var previewItemTitle: String?
init(previewItemURL: URL?, previewItemTitle: String?) {
self.previewItemURL = previewItemURL
self.previewItemTitle = previewItemTitle
}
}
// MARK: - Previews
struct FilePreviewScreen_Previews: PreviewProvider {
static let viewModel = FilePreviewScreenViewModel(mediaFile: .unmanaged(url: URL(staticString: "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf")))
static var previews: some View {
FilePreviewScreen(context: viewModel.context)
}
}