#region header
// ========================================================================
// Copyright (c) 2018 - Julien Caillon (julien.caillon@gmail.com)
// This file (RFont.cs) is part of YamuiFramework.
// 
// YamuiFramework is a 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.
// 
// YamuiFramework 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 YamuiFramework. If not, see <http://www.gnu.org/licenses/>.
// ========================================================================
#endregion
namespace YamuiFramework.HtmlRenderer.Core.Adapters {
    /// <summary>
    /// Adapter for platform specific font object - used to render text using specific font.
    /// </summary>
    public abstract class RFont {
        /// <summary>
        /// Gets the em-size of this Font measured in the units specified by the Unit property.
        /// </summary>
        public abstract double Size { get; }

        /// <summary>
        /// The line spacing, in pixels, of this font.
        /// </summary>
        public abstract double Height { get; }

        /// <summary>
        /// Get the vertical offset of the font underline location from the top of the font.
        /// </summary>
        public abstract double UnderlineOffset { get; }

        /// <summary>
        /// Get the left padding, in pixels, of the font.
        /// </summary>
        public abstract double LeftPadding { get; }

        public abstract double GetWhitespaceWidth(RGraphics graphics);
    }
}