Add Picture in Picture (PiP) support

[Copilot]

Exploration/draft of PiP mode support, allowing the app to float in a small window so users can continue work (notes, forms) while browsing other parts of the journal.

Description of Change

Library — DIPS.Mobile.UI.API.PictureInPicture.PipService

• IsSupported — device/platform capability check
• Enter() — enters PiP with default 9:16 portrait ratio
• Enter(int ratioWidth, int ratioHeight) — configurable aspect ratio
• PipModeChanged event — subscribe to enter/exit transitions
• NotifyPipModeChanged(bool) — call from host app's MainActivity.OnPictureInPictureModeChanged (Android)

Android: Uses PictureInPictureParams.Builder; seamless resize enabled on API 31+.

iOS (15+): Uses AVPictureInPictureController with AVSampleBufferDisplayLayer. On Enter(), captures a snapshot of the current window and displays it in the PiP overlay. No audio session setup is required — this is a display-only implementation.

Host app wiring required (Android)

[Activity(SupportsPictureInPicture = true, ...)]
public class MainActivity : MauiAppCompatActivity
{
    public override void OnPictureInPictureModeChanged(bool isInPictureInPictureMode, Configuration newConfig)
    {
        base.OnPictureInPictureModeChanged(isInPictureInPictureMode, newConfig);
        PipService.NotifyPipModeChanged(isInPictureInPictureMode);
    }
}

Sample app

Added PictureInPictureSamples to the Components app demonstrating a notes field entering PiP mode with live status feedback. Registered in REGISTER_YOUR_SAMPLES_HERE.

Todos

• I have tested on an Android device.
• I have tested on an iOS device.
• I have supported accessibility

View original Slack conversation

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[haavamoa]

@copilot I notice you did not implement ios. Use this guide to do it:

https://dev.to/sylar/ios-picture-in-picture-pip-implementation-guide-3b56

[Copilot]

@copilot I notice you did not implement ios. Use this guide to do it:

https://dev.to/sylar/ios-picture-in-picture-pip-implementation-guide-3b56

Implemented iOS PiP in commit 0fc9495 using AVPictureInPictureController with AVSampleBufferDisplayLayer (iOS 15+):

• PipPlaybackDelegate implements IAVPictureInPictureSampleBufferPlaybackDelegate with the required [Export] selectors
• On Enter(), captures a snapshot of the current window using UIView.Layer.RenderInContext into a CVPixelBuffer, wraps it as a CMSampleBuffer, and enqueues it to the AVSampleBufferDisplayLayer — this becomes the content shown in the PiP window
• AVAudioSession is configured with .Playback category (required by iOS for PiP to work)
• UIBackgroundModes: audio added to the Components app's Info.plist
• Uses UIApplication.SharedApplication.ConnectedScenes (non-deprecated) to resolve the key window
• PipControllerDelegate fires the shared PipModeChanged event on PiP start/stop

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dev.to
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[haavamoa]

@copilot we wont actually use it for audio purposes, but to simply display a custom view. Remove all overhead with AVCaptureSession

[Copilot]

Done in 375652c. Removed SetupAudioSession(), the AVAudioSession call in Enter(), the DIPS.Mobile.UI.Internal.Logging import, and the UIBackgroundModes: audio entry from Info.plist. The iOS PiP implementation now only uses AVPictureInPictureController + AVSampleBufferDisplayLayer to display a snapshot of the current window.