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74 changes: 74 additions & 0 deletions
74
DocumentationTests/DocumentationTests/DocumentationTests/03-guides/10-custom-events.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| import StreamVideo | ||
| import StreamVideoSwiftUI | ||
| import SwiftUI | ||
| import Combine | ||
|
|
||
| @MainActor | ||
| fileprivate func content() { | ||
| asyncContainer { | ||
| let response = try await call.sendCustomEvent(["type": .string("draw"), "x": .number(10), "y": .number(20)]) | ||
| } | ||
|
|
||
| asyncContainer { | ||
| func sendImageData(_ data: Data) async { | ||
| guard | ||
| let snapshot = UIImage(data: data), | ||
| let resizedImage = resize(image: snapshot, to: .init(width: 30, height: 30)), | ||
| let snapshotData = resizedImage.jpegData(compressionQuality: 0.8) | ||
| else { | ||
| return | ||
| } | ||
|
|
||
| do { | ||
| try await call.sendCustomEvent([ | ||
| "snapshot": .string(snapshotData.base64EncodedString()) | ||
| ]) | ||
| } catch { | ||
| log.error("Failed to send image.", error: error) | ||
| } | ||
| } | ||
|
|
||
| func resize( | ||
| image: UIImage, | ||
| to targetSize: CGSize | ||
| ) -> UIImage? { | ||
| guard | ||
| image.size.width > targetSize.width || image.size.height > targetSize.height | ||
| else { | ||
| return image | ||
| } | ||
|
|
||
| let widthRatio = targetSize.width / image.size.width | ||
| let heightRatio = targetSize.height / image.size.height | ||
|
|
||
| // Determine the scale factor that preserves aspect ratio | ||
| let scaleFactor = min(widthRatio, heightRatio) | ||
|
|
||
| let scaledWidth = image.size.width * scaleFactor | ||
| let scaledHeight = image.size.height * scaleFactor | ||
| let targetRect = CGRect( | ||
| x: (targetSize.width - scaledWidth) / 2, | ||
| y: (targetSize.height - scaledHeight) / 2, | ||
| width: scaledWidth, | ||
| height: scaledHeight | ||
| ) | ||
|
|
||
| // Create a new image context | ||
| UIGraphicsBeginImageContextWithOptions(targetSize, false, 0) | ||
| image.draw(in: targetRect) | ||
|
|
||
| let newImage = UIGraphicsGetImageFromCurrentImageContext() | ||
| UIGraphicsEndImageContext() | ||
|
|
||
| return newImage | ||
| } | ||
| } | ||
|
|
||
| asyncContainer { | ||
| for await event in call.subscribe(for: CustomVideoEvent.self) { | ||
| // read custom data | ||
| let customData = event.custom | ||
| // perform actions with the custom data. | ||
| } | ||
| } | ||
| } |
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