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EPG: Scroll-Position nach Erinnerung-Rebuild beibehalten

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administrator 2026-05-17 17:53:16 +02:00
parent 951e02f0fb
commit dbd7aad30d
1 changed files with 18 additions and 6 deletions
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24
MainWindow.xaml.cs
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@ -823,6 +823,8 @@ public partial class MainWindow : Window
private const int EpgTotalHours = 8;
private DateTime _epgStartTime;
private double _epgScrollH = 0;
private double _epgScrollV = 0;
private async Task ShowEpgOverlayAsync()
{
@ -844,7 +846,7 @@ public partial class MainWindow : Window
}
TxtEpgOverlayStatus.Text = "Baue Programm\u2026";
await BuildEpgGridAsync();
await BuildEpgGridAsync(resetScroll: true);
}
private void HideEpgOverlay()
@ -853,9 +855,11 @@ public partial class MainWindow : Window
EpgCanvas.Children.Clear();
}
private async Task BuildEpgGridAsync()
private async Task BuildEpgGridAsync(bool resetScroll = false)
{
// Erst nach Background-Priority clearen damit laufende Event-Handler fertig sind
_epgScrollH = EpgScrollViewer.HorizontalOffset;
_epgScrollV = EpgScrollViewer.VerticalOffset;
await Dispatcher.InvokeAsync(() => EpgCanvas.Children.Clear(),
System.Windows.Threading.DispatcherPriority.Background);
EpgCanvas.Children.Clear();
@ -887,8 +891,16 @@ public partial class MainWindow : Window
}
TxtEpgOverlayStatus.Text = $"{channels.Count} Sender \u00b7 {EpgTotalHours} Stunden";
EpgScrollViewer.ScrollToHorizontalOffset(0);
EpgScrollViewer.ScrollToVerticalOffset(0);
if (resetScroll)
{
EpgScrollViewer.ScrollToHorizontalOffset(0);
EpgScrollViewer.ScrollToVerticalOffset(0);
}
else
{
EpgScrollViewer.ScrollToHorizontalOffset(_epgScrollH);
EpgScrollViewer.ScrollToVerticalOffset(_epgScrollV);
}
}
private void BuildEpgHeader(double totalMinutes, double contentWidth, double contentHeight)
@ -1104,7 +1116,7 @@ public partial class MainWindow : Window
});
}
// Verzoegert neu bauen damit Event-Handler sauber abgeschlossen ist
Dispatcher.BeginInvoke(async () => await BuildEpgGridAsync(),
Dispatcher.BeginInvoke(async () => await BuildEpgGridAsync(resetScroll: false),
System.Windows.Threading.DispatcherPriority.Background);
};
menu.Items.Add(remind);