Files
Aaru/Aaru.Gui/Helpers/ThemeToSvgPathConverter.cs

77 lines
2.8 KiB
C#

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : ThemeToSvgPathConverter.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : GUI helpers.
//
// --[ Description ] ----------------------------------------------------------
//
// Converter to provide theme-aware SVG asset paths.
//
// --[ License ] --------------------------------------------------------------
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General public License for more details.
//
// You should have received a copy of the GNU General public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2025 Natalia Portillo
// ****************************************************************************/
#nullable enable
using System;
using System.Globalization;
using Avalonia.Data.Converters;
using Avalonia.Styling;
namespace Aaru.Gui.Helpers;
/// <summary>
/// Converter that returns different SVG asset paths based on the current theme (light or dark).
/// </summary>
/// <inheritdoc />
public class ThemeToSvgPathConverter : IValueConverter
{
/// <inheritdoc />
public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
{
if(value is not ThemeVariant themeVariant || parameter is not string fullPath) return null;
// Check if it's dark theme
bool isDark = themeVariant == ThemeVariant.Dark;
if(!isDark) return fullPath;
// For dark theme, insert "Dark/" before the filename
int lastSlashIndex = fullPath.LastIndexOf('/');
if(lastSlashIndex == -1)
{
// No path separator, just filename
return $"Dark/{fullPath}";
}
// Split path and filename, insert Dark/ before filename
string directory = fullPath[..(lastSlashIndex + 1)];
string filename = fullPath[(lastSlashIndex + 1)..];
return $"{directory}Dark/{filename}";
}
/// <inheritdoc />
public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) =>
throw new NotImplementedException();
}