jellyfin-server/Jellyfin.Drawing.Skia/PercentPlayedDrawer.cs

using System;
using MediaBrowser.Model.Drawing;
using SkiaSharp;

namespace Jellyfin.Drawing.Skia
{
    /// <summary>
    /// Static helper class used to draw percentage-played indicators on images.
    /// </summary>
    public static class PercentPlayedDrawer
    {
        private const int IndicatorHeight = 8;

        /// <summary>
        /// Draw a percentage played indicator on a canvas.
        /// </summary>
        /// <param name="canvas">The canvas to draw the indicator on.</param>
        /// <param name="imageSize">The size of the image being drawn on.</param>
        /// <param name="percent">The percentage played to display with the indicator.</param>
        public static void Process(SKCanvas canvas, ImageDimensions imageSize, double percent)
        {
            using var paint = new SKPaint();
            var endX = imageSize.Width - 1;
            var endY = imageSize.Height - 1;

            paint.Color = SKColor.Parse("#99000000");
            paint.Style = SKPaintStyle.Fill;
            canvas.DrawRect(SKRect.Create(0, (float)endY - IndicatorHeight, endX, endY), paint);

            double foregroundWidth = (endX * percent) / 100;

            paint.Color = SKColor.Parse("#FF00A4DC");
            canvas.DrawRect(SKRect.Create(0, (float)endY - IndicatorHeight, Convert.ToInt32(foregroundWidth), endY), paint);
        }
    }
}