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Readable coloring for calendar events.

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This commit is contained in:
Burak Kaan Köse
2024-12-30 01:15:06 +01:00
parent 332f2ab89f
commit bb56815210
2 changed files with 37 additions and 1 deletions
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6
Wino.Calendar/Styles/WinoCalendarResources.xaml
View File

@@ -5,6 +5,7 @@
xmlns:controls="using:Wino.Calendar.Controls" xmlns:controls="using:Wino.Calendar.Controls"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:data="using:Wino.Calendar.ViewModels.Data" xmlns:data="using:Wino.Calendar.ViewModels.Data"
xmlns:helpers="using:Wino.Helpers"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:models="using:Wino.Core.Domain.Models.Calendar" xmlns:models="using:Wino.Core.Domain.Models.Calendar"
xmlns:muxc="using:Microsoft.UI.Xaml.Controls" xmlns:muxc="using:Microsoft.UI.Xaml.Controls"
@@ -12,9 +13,12 @@
<!-- Default Calendar Item View Model Template --> <!-- Default Calendar Item View Model Template -->
<DataTemplate x:Key="CalendarItemViewModelItemTemplate" x:DataType="data:CalendarItemViewModel"> <DataTemplate x:Key="CalendarItemViewModelItemTemplate" x:DataType="data:CalendarItemViewModel">
<Grid Background="Red" CornerRadius="4"> <Grid Background="{x:Bind helpers:XamlHelpers.GetSolidColorBrushFromHex(AssignedCalendar.BackgroundColorHex), Mode=OneWay}" CornerRadius="4">
<TextBlock <TextBlock
Margin="2,0"
HorizontalAlignment="Center" HorizontalAlignment="Center"
VerticalAlignment="Center"
Foreground="{x:Bind helpers:XamlHelpers.GetReadableTextColor(AssignedCalendar.BackgroundColorHex), Mode=OneWay}"
Text="{x:Bind CalendarItem.Title}" Text="{x:Bind CalendarItem.Title}"
TextWrapping="Wrap" /> TextWrapping="Wrap" />
</Grid> </Grid>

32
Wino.Core.UWP/Helpers/XamlHelpers.cs
View File

@@ -1,4 +1,5 @@
using System; using System;
using System.Globalization;
using System.Linq; using System.Linq;
using Microsoft.Toolkit.Uwp.Helpers; using Microsoft.Toolkit.Uwp.Helpers;
using Microsoft.UI.Xaml.Controls; using Microsoft.UI.Xaml.Controls;
@@ -42,6 +43,37 @@ namespace Wino.Helpers
}; };
} }
public static SolidColorBrush GetReadableTextColor(string backgroundColor)
{
if (!backgroundColor.StartsWith("#")) throw new ArgumentException("Hex color must start with #.");
backgroundColor = backgroundColor.TrimStart('#');
if (backgroundColor.Length == 6)
{
var r = int.Parse(backgroundColor.Substring(0, 2), NumberStyles.HexNumber);
var g = int.Parse(backgroundColor.Substring(2, 2), NumberStyles.HexNumber);
var b = int.Parse(backgroundColor.Substring(4, 2), NumberStyles.HexNumber);
// Calculate relative luminance
double luminance = (0.2126 * GetLinearValue(r)) +
(0.7152 * GetLinearValue(g)) +
(0.0722 * GetLinearValue(b));
return luminance > 0.5 ? new SolidColorBrush(Colors.Black) : new SolidColorBrush(Colors.White);
}
else
{
throw new ArgumentException("Hex color must be 6 characters long (e.g., #RRGGBB).");
}
}
private static double GetLinearValue(int colorComponent)
{
double sRGB = colorComponent / 255.0;
return sRGB <= 0.03928 ? sRGB / 12.92 : Math.Pow((sRGB + 0.055) / 1.055, 2.4);
}
public static Microsoft.UI.Xaml.Controls.NavigationViewDisplayMode NavigationViewDisplayModeConverter(SplitViewDisplayMode splitViewDisplayMode) public static Microsoft.UI.Xaml.Controls.NavigationViewDisplayMode NavigationViewDisplayModeConverter(SplitViewDisplayMode splitViewDisplayMode)
{ {
return splitViewDisplayMode switch return splitViewDisplayMode switch