/*
    Copyright (C) 2014-2019 de4dot@gmail.com

    This file is part of dnSpy

    dnSpy 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.

    dnSpy 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 dnSpy.  If not, see <http://www.gnu.org/licenses/>.
*/

using System;
using System.Globalization;
using System.Windows.Data;
using dnSpy.Contracts.Controls;

namespace dnSpy.Contracts.MVVM.Converters {
	/// <summary>
	/// Font size converter
	/// </summary>
	public sealed class FontSizeConverter : IValueConverter {
		object IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture) => Math.Round((double)value / (96.0 / 72.0));

		object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
			var s = (string)value;
			if (double.TryParse(s, out double v))
				return v * (96.0 / 72.0);
			return FontUtilities.DEFAULT_FONT_SIZE;
		}
	}
}