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Fix CategoryAxis labels not visible on Android XXHDPI devices #219

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Fix CategoryAxis labels not visible on Android XXHDPI devices #219

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9cbe51c
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Copilot Jul 16, 2025
a487888
Fix CategoryAxis label positioning on Android XXHDPI devices
Copilot Jul 16, 2025
1d0d67b
Fix CategoryAxis label generation on Android XXHDPI devices
Copilot Jul 24, 2025
22766de
Fix CategoryAxis interval calculation on Android XXHDPI devices
Copilot Jul 25, 2025
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31 changes: 31 additions & 0 deletions maui/src/Charts/Axis/CategoryAxis.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,12 +14,43 @@ protected override double CalculateActualInterval(DoubleRange range, Size availa
{
if (double.IsNaN(AxisInterval) || AxisInterval <= 0)
{
#if ANDROID
// Fix for CategoryAxis labels not visible on Android XXHDPI devices
// Normalize size by display density to ensure consistent interval calculation across different screen densities
var density = Android.Content.Res.Resources.System?.DisplayMetrics?.Density ?? 1.0f;
var normalizedAvailableSize = new Size(availableSize.Width / density, availableSize.Height / density);
return Math.Max(1d, Math.Floor(range.Delta / GetActualDesiredIntervalsCount(normalizedAvailableSize)));
#else
return Math.Max(1d, Math.Floor(range.Delta / GetActualDesiredIntervalsCount(availableSize)));
#endif
}

return AxisInterval;
}

/// <inheritdoc/>
protected override double CalculateVisibleInterval(DoubleRange visibleRange, Size availableSize)
{
if (ZoomFactor < 1 || ZoomPosition > 0)
{
#if ANDROID
// Fix for CategoryAxis labels not visible on Android XXHDPI devices
// Normalize size by display density to ensure consistent interval calculation across different screen densities
var density = Android.Content.Res.Resources.System?.DisplayMetrics?.Density ?? 1.0f;
var normalizedAvailableSize = new Size(availableSize.Width / density, availableSize.Height / density);
return EnableAutoIntervalOnZooming
? CalculateNiceInterval(visibleRange, normalizedAvailableSize)
: ActualInterval;
#else
return EnableAutoIntervalOnZooming
? CalculateNiceInterval(visibleRange, availableSize)
: ActualInterval;
#endif
}

return ActualInterval;
}

/// <inheritdoc/>
protected override DoubleRange ApplyRangePadding(DoubleRange range, double interval)
{
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