Fix audio navigation race condition and font size increments in ReadingPage

[Copilot]

Three UX issues: double-tap doesn't start audio, next/prev buttons desync audio/UI during playback, font size adjustments too slow.

Changes

Font Size Increments

• Changed step from ±2 to ±4 points
• Fixed minimum from 32 to 12 points

Audio Navigation Race Condition

Root cause: UI state updated before audio manager, causing SentenceChanged event to conflict with direct state updates.

// Before: UI updates first, audio second → race condition
SetState(s => s.CurrentSentenceIndex = newIndex);
await _audioManager.NextSentenceAsync();

// After: Single source of truth
if (State.IsAudioPlaying)
    await _audioManager.NextSentenceAsync();  // Audio manager fires SentenceChanged
else
    SetState(s => s.CurrentSentenceIndex = newIndex);  // Direct UI update

When audio plays, audio manager owns state and UI reacts to events. When paused, UI owns state directly.

Playback Guarantee

PlayFromSentenceAsync now tracks playback state before seek and ensures Play() is called if player stopped during seek (platform-specific behavior).

Files

• ReadingPage.cs: NextSentence/PreviousSentence logic, font size functions
• TimestampedAudioManager.cs: PlayFromSentenceAsync state tracking

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:

• crl3.digicert.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.ServiceDefaults/SentenceStudio.ServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/36C1340DD01B4B67C9B3943A164EB4B3/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• crl4.digicert.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/B36CFA6416854FEDF968291988243543/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/E5630192442723D4FD51CE2E701AE7F3/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• dc.services.visualstudio.com
  • Triggering command: dotnet build src/SentenceStudio/SentenceStudio.csproj -f net10.0-android (dns block)
  • Triggering command: dotnet --info (dns block)
  • Triggering command: dotnet nuget list source --format Short (dns block)
• ocsp.digicert.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.ServiceDefaults/SentenceStudio.ServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/36C1340DD01B4B67C9B3943A164EB4B3/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• s.symcb.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/B36CFA6416854FEDF968291988243543/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/E5630192442723D4FD51CE2E701AE7F3/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• s.symcd.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/B36CFA6416854FEDF968291988243543/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/E5630192442723D4FD51CE2E701AE7F3/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• scanning-api.github.com
  • Triggering command: /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)
• ts-crl.ws.symantec.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/B36CFA6416854FEDF968291988243543/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/E5630192442723D4FD51CE2E701AE7F3/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• ts-ocsp.ws.symantec.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/B36CFA6416854FEDF968291988243543/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/E5630192442723D4FD51CE2E701AE7F3/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• www.microsoft.com
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.ServiceDefaults/SentenceStudio.ServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/SentenceStudio/src/SentenceStudio.WebServiceDefaults/SentenceStudio.WebServiceDefaults.csproj --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: dotnet restore --no-dependencies /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/777E6BE119433B32B60DFBA0824DFCC2/missingpackages_workingdir --packages /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/SentenceStudio/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)

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Original prompt

There are a few UX bugs on this view. When double tapping a sentence, I expect the audio to move to that sentence and play it. Right now it does not.

Also when I am playing the audio and I tap the next sentence or previous sentence buttons, I expect the audio to move with it. If it's not already playing then it should just move the highlighting as it does now. If I later tap the play button, it should start playing from the selected/highlighted sentence.

The font increase / decrease is too small in steps. I want to be able to increase much faster with each tap. Look at the sizing and choose a more realistic increment.

Troubleshoot and fix these issues.

The user has attached the following file paths as relevant context:

• src/SentenceStudio/Pages/Reading/ReadingPage.cs
• src/SentenceStudio/Components/InteractiveTextRenderer.cs
• src/SentenceStudio/Components/RxInteractiveTextRenderer.cs

1. User Intent Evolution:

• The user has been focused on improving the UI/UX of the SentenceStudio application, specifically addressing issues with the activity timer, audio playback, and font size adjustments. They have provided detailed feedback on expected behaviors and have requested troubleshooting and fixes for various components.

2. Technical Foundation:

• [Core Technology 1]: .NET MAUI - Used for building cross-platform applications.
• [Framework/Library 2]: MauiReactor - A framework for building .NET MAUI applications using a React-like approach.
• [Architectural Pattern 3]: MVVM (Model-View-ViewModel) - Used for separating the UI from business logic.
• [Environment Detail 4]: The application is being developed in a local environment with a focus on UI/UX improvements.

3. Codebase Status:

• • Purpose: Handles the vocabulary quiz functionality.
  • Current State: Encountered an exception when checking answers.
  • Key Code Segments: Involved in updating spaced repetition schedules.
  • Dependencies: Relies on VocabularyProgressService for tracking progress.
• • Purpose: Displays the activity timer in the UI.
  • Current State: Needs to be rendered correctly in the TitleView or upper right corner.
  • Key Code Segments: Timer logic and UI rendering.
  • Dependencies: Tied to the overall activity tracking functionality.

4. Problem Resolution:

• Issues Encountered:
  • Timer not displaying in the UI.
  • Audio playback not moving with sentence navigation.
  • Font size adjustments being too small.
  • Exception thrown when checking answers in the vocabulary quiz.
• Solutions Implemented:
  • Proposed using TitleView for the timer.
  • Suggested logging to troubleshoot rendering issues.
  • Recommended adjusting font size increments.
• Debugging Context: The user has requested logging to verify if components are being rendered and functioning as expected.

5. Progress Tracking:

• Completed Tasks:
  • User has provided feedback on various UI components.
• Partially Complete Work:
  • Timer implementation and audio playback adjustments are in progress.
• Validated Outcomes:
  • User has confirmed issues with the current implementation of the vocabulary quiz.

6. Active Work State:

• Current Focus: Troubleshooting the activity timer and audio playback issues.
• Recent Context: The user expressed frustration with the current implementation and requested specific changes to improve functionality.
• Working Code: The user is actively working on the VocabularyQuizPage and ActivityTimerBar components.
• Immediate Context: The user is looking for fixes to the timer display and audio navigation issues.

7. Recent Operations:

• Last Agent Commands:
  • "Delegate: 'Delegate to cloud agent'" - This command indicates a handoff to another agent for further assistance.
• Tool Results Summary:
  • No specific tool results were returned as the last command was a delegation.
• Pre-Summary State: The agent was focused on addressing the user's concerns regarding the timer and audio playback functionality.
• Operation Context: The user is seeking to enhance the overall user experience by ensuring that the timer and audio features work seamlessly.

8. Continuation Plan:

• [Pending Task 1]: Implement the timer in the upper right corner of the ContentPage.
• [Pending Task 2]: Adjust audio playback behavior to follow sentence navigation.
• [Priority Information]: Fixing the vocabulary quiz functionality is urgent as it directly impacts user experience.
• [Next Action]: Investigate the rendering of the timer and audio playback logic, ensuring proper logging is in place to track issues.

Created from VS Code.

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