added drawing project

5 files changed, 566 insertions, 0 deletions

diff --git a/Emby.Drawing/GDI/GDIImageEncoder.cs b/Emby.Drawing/GDI/GDIImageEncoder.cs
new file mode 100644
index 0000000000..c6537fc436
--- /dev/null
+++ b/Emby.Drawing/GDI/GDIImageEncoder.cs
@@ -0,0 +1,233 @@
+using MediaBrowser.Common.IO;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Model.Drawing;
+using MediaBrowser.Model.Logging;
+using System;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Drawing.Imaging;
+using System.IO;
+using ImageFormat = MediaBrowser.Model.Drawing.ImageFormat;
+
+namespace Emby.Drawing.GDI
+{
+    public class GDIImageEncoder : IImageEncoder
+    {
+        private readonly IFileSystem _fileSystem;
+        private readonly ILogger _logger;
+
+        public GDIImageEncoder(IFileSystem fileSystem, ILogger logger)
+        {
+            _fileSystem = fileSystem;
+            _logger = logger;
+        }
+
+        public string[] SupportedInputFormats
+        {
+            get
+            {
+                return new[]
+                {
+                    "png",
+                    "jpeg",
+                    "jpg",
+                    "gif",
+                    "bmp"
+                };
+            }
+        }
+
+        public ImageFormat[] SupportedOutputFormats
+        {
+            get
+            {
+                return new[] { ImageFormat.Gif, ImageFormat.Jpg, ImageFormat.Png };
+            }
+        }
+
+        public ImageSize GetImageSize(string path)
+        {
+            using (var image = Image.FromFile(path))
+            {
+                return new ImageSize
+                {
+                    Width = image.Width,
+                    Height = image.Height
+                };
+            }
+        }
+
+        public void CropWhiteSpace(string inputPath, string outputPath)
+        {
+            using (var image = (Bitmap)Image.FromFile(inputPath))
+            {
+                using (var croppedImage = image.CropWhitespace())
+                {
+                    Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
+
+                    using (var outputStream = _fileSystem.GetFileStream(outputPath, FileMode.Create, FileAccess.Write, FileShare.Read, false))
+                    {
+                        croppedImage.Save(System.Drawing.Imaging.ImageFormat.Png, outputStream, 100);
+                    }
+                } 
+            }
+        }
+
+        public void EncodeImage(string inputPath, string cacheFilePath, int width, int height, int quality, ImageProcessingOptions options)
+        {
+            var hasPostProcessing = !string.IsNullOrEmpty(options.BackgroundColor) || options.UnplayedCount.HasValue || options.AddPlayedIndicator || options.PercentPlayed > 0;
+
+            using (var originalImage = Image.FromFile(inputPath))
+            {
+                var newWidth = Convert.ToInt32(width);
+                var newHeight = Convert.ToInt32(height);
+
+                var selectedOutputFormat = options.OutputFormat;
+
+                // Graphics.FromImage will throw an exception if the PixelFormat is Indexed, so we need to handle that here
+                // Also, Webp only supports Format32bppArgb and Format32bppRgb
+                var pixelFormat = selectedOutputFormat == ImageFormat.Webp
+                    ? PixelFormat.Format32bppArgb
+                    : PixelFormat.Format32bppPArgb;
+
+                using (var thumbnail = new Bitmap(newWidth, newHeight, pixelFormat))
+                {
+                    // Mono throw an exeception if assign 0 to SetResolution
+                    if (originalImage.HorizontalResolution > 0 && originalImage.VerticalResolution > 0)
+                    {
+                        // Preserve the original resolution
+                        thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
+                    }
+
+                    using (var thumbnailGraph = Graphics.FromImage(thumbnail))
+                    {
+                        thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality;
+                        thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality;
+                        thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;
+                        thumbnailGraph.PixelOffsetMode = PixelOffsetMode.HighQuality;
+                        thumbnailGraph.CompositingMode = !hasPostProcessing ?
+                            CompositingMode.SourceCopy :
+                            CompositingMode.SourceOver;
+
+                        SetBackgroundColor(thumbnailGraph, options);
+
+                        thumbnailGraph.DrawImage(originalImage, 0, 0, newWidth, newHeight);
+
+                        DrawIndicator(thumbnailGraph, newWidth, newHeight, options);
+
+                        var outputFormat = GetOutputFormat(originalImage, selectedOutputFormat);
+
+                        Directory.CreateDirectory(Path.GetDirectoryName(cacheFilePath));
+
+                        // Save to the cache location
+                        using (var cacheFileStream = _fileSystem.GetFileStream(cacheFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, false))
+                        {
+                            // Save to the memory stream
+                            thumbnail.Save(outputFormat, cacheFileStream, quality);
+                        }
+                    }
+                }
+
+            }
+        }
+
+        /// <summary>
+        /// Sets the color of the background.
+        /// </summary>
+        /// <param name="graphics">The graphics.</param>
+        /// <param name="options">The options.</param>
+        private void SetBackgroundColor(Graphics graphics, ImageProcessingOptions options)
+        {
+            var color = options.BackgroundColor;
+
+            if (!string.IsNullOrEmpty(color))
+            {
+                Color drawingColor;
+
+                try
+                {
+                    drawingColor = ColorTranslator.FromHtml(color);
+                }
+                catch
+                {
+                    drawingColor = ColorTranslator.FromHtml("#" + color);
+                }
+
+                graphics.Clear(drawingColor);
+            }
+        }
+
+        /// <summary>
+        /// Draws the indicator.
+        /// </summary>
+        /// <param name="graphics">The graphics.</param>
+        /// <param name="imageWidth">Width of the image.</param>
+        /// <param name="imageHeight">Height of the image.</param>
+        /// <param name="options">The options.</param>
+        private void DrawIndicator(Graphics graphics, int imageWidth, int imageHeight, ImageProcessingOptions options)
+        {
+            if (!options.AddPlayedIndicator && !options.UnplayedCount.HasValue && options.PercentPlayed.Equals(0))
+            {
+                return;
+            }
+
+            try
+            {
+                if (options.AddPlayedIndicator)
+                {
+                    var currentImageSize = new Size(imageWidth, imageHeight);
+
+                    new PlayedIndicatorDrawer().DrawPlayedIndicator(graphics, currentImageSize);
+                }
+                else if (options.UnplayedCount.HasValue)
+                {
+                    var currentImageSize = new Size(imageWidth, imageHeight);
+
+                    new UnplayedCountIndicator().DrawUnplayedCountIndicator(graphics, currentImageSize, options.UnplayedCount.Value);
+                }
+
+                if (options.PercentPlayed > 0)
+                {
+                    var currentImageSize = new Size(imageWidth, imageHeight);
+
+                    new PercentPlayedDrawer().Process(graphics, currentImageSize, options.PercentPlayed);
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Error drawing indicator overlay", ex);
+            }
+        }
+
+        /// <summary>
+        /// Gets the output format.
+        /// </summary>
+        /// <param name="image">The image.</param>
+        /// <param name="outputFormat">The output format.</param>
+        /// <returns>ImageFormat.</returns>
+        private System.Drawing.Imaging.ImageFormat GetOutputFormat(Image image, ImageFormat outputFormat)
+        {
+            switch (outputFormat)
+            {
+                case ImageFormat.Bmp:
+                    return System.Drawing.Imaging.ImageFormat.Bmp;
+                case ImageFormat.Gif:
+                    return System.Drawing.Imaging.ImageFormat.Gif;
+                case ImageFormat.Jpg:
+                    return System.Drawing.Imaging.ImageFormat.Jpeg;
+                case ImageFormat.Png:
+                    return System.Drawing.Imaging.ImageFormat.Png;
+                default:
+                    return image.RawFormat;
+            }
+        }
+
+        public void CreateImageCollage(ImageCollageOptions options)
+        {
+        }
+
+        public void Dispose()
+        {
+        }
+    }
+}
diff --git a/Emby.Drawing/GDI/ImageExtensions.cs b/Emby.Drawing/GDI/ImageExtensions.cs
new file mode 100644
index 0000000000..6af5a8688f
--- /dev/null
+++ b/Emby.Drawing/GDI/ImageExtensions.cs
@@ -0,0 +1,217 @@
+using System;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Drawing.Imaging;
+using System.IO;
+
+namespace Emby.Drawing.GDI
+{
+    public static class ImageExtensions
+    {
+        /// <summary>
+        /// Saves the image.
+        /// </summary>
+        /// <param name="outputFormat">The output format.</param>
+        /// <param name="image">The image.</param>
+        /// <param name="toStream">To stream.</param>
+        /// <param name="quality">The quality.</param>
+        public static void Save(this Image image, ImageFormat outputFormat, Stream toStream, int quality)
+        {
+            // Use special save methods for jpeg and png that will result in a much higher quality image
+            // All other formats use the generic Image.Save
+            if (ImageFormat.Jpeg.Equals(outputFormat))
+            {
+                SaveAsJpeg(image, toStream, quality);
+            }
+            else if (ImageFormat.Png.Equals(outputFormat))
+            {
+                image.Save(toStream, ImageFormat.Png);
+            }
+            else
+            {
+                image.Save(toStream, outputFormat);
+            }
+        }
+
+        /// <summary>
+        /// Saves the JPEG.
+        /// </summary>
+        /// <param name="image">The image.</param>
+        /// <param name="target">The target.</param>
+        /// <param name="quality">The quality.</param>
+        public static void SaveAsJpeg(this Image image, Stream target, int quality)
+        {
+            using (var encoderParameters = new EncoderParameters(1))
+            {
+                encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, quality);
+                image.Save(target, GetImageCodecInfo("image/jpeg"), encoderParameters);
+            }
+        }
+
+        private static readonly ImageCodecInfo[] Encoders = ImageCodecInfo.GetImageEncoders();
+
+        /// <summary>
+        /// Gets the image codec info.
+        /// </summary>
+        /// <param name="mimeType">Type of the MIME.</param>
+        /// <returns>ImageCodecInfo.</returns>
+        private static ImageCodecInfo GetImageCodecInfo(string mimeType)
+        {
+            foreach (var encoder in Encoders)
+            {
+                if (string.Equals(encoder.MimeType, mimeType, StringComparison.OrdinalIgnoreCase))
+                {
+                    return encoder;
+                }
+            }
+
+            return Encoders.Length == 0 ? null : Encoders[0];
+        }
+
+        /// <summary>
+        /// Crops an image by removing whitespace and transparency from the edges
+        /// </summary>
+        /// <param name="bmp">The BMP.</param>
+        /// <returns>Bitmap.</returns>
+        /// <exception cref="System.Exception"></exception>
+        public static Bitmap CropWhitespace(this Bitmap bmp)
+        {
+            var width = bmp.Width;
+            var height = bmp.Height;
+
+            var topmost = 0;
+            for (int row = 0; row < height; ++row)
+            {
+                if (IsAllWhiteRow(bmp, row, width))
+                    topmost = row;
+                else break;
+            }
+
+            int bottommost = 0;
+            for (int row = height - 1; row >= 0; --row)
+            {
+                if (IsAllWhiteRow(bmp, row, width))
+                    bottommost = row;
+                else break;
+            }
+
+            int leftmost = 0, rightmost = 0;
+            for (int col = 0; col < width; ++col)
+            {
+                if (IsAllWhiteColumn(bmp, col, height))
+                    leftmost = col;
+                else
+                    break;
+            }
+
+            for (int col = width - 1; col >= 0; --col)
+            {
+                if (IsAllWhiteColumn(bmp, col, height))
+                    rightmost = col;
+                else
+                    break;
+            }
+
+            if (rightmost == 0) rightmost = width; // As reached left
+            if (bottommost == 0) bottommost = height; // As reached top.
+
+            var croppedWidth = rightmost - leftmost;
+            var croppedHeight = bottommost - topmost;
+
+            if (croppedWidth == 0) // No border on left or right
+            {
+                leftmost = 0;
+                croppedWidth = width;
+            }
+
+            if (croppedHeight == 0) // No border on top or bottom
+            {
+                topmost = 0;
+                croppedHeight = height;
+            }
+
+            // Graphics.FromImage will throw an exception if the PixelFormat is Indexed, so we need to handle that here
+            var thumbnail = new Bitmap(croppedWidth, croppedHeight, PixelFormat.Format32bppPArgb);
+
+            // Preserve the original resolution
+            TrySetResolution(thumbnail, bmp.HorizontalResolution, bmp.VerticalResolution);
+
+            using (var thumbnailGraph = Graphics.FromImage(thumbnail))
+            {
+                thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality;
+                thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality;
+                thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;
+                thumbnailGraph.PixelOffsetMode = PixelOffsetMode.HighQuality;
+                thumbnailGraph.CompositingMode = CompositingMode.SourceCopy;
+
+                thumbnailGraph.DrawImage(bmp,
+                  new RectangleF(0, 0, croppedWidth, croppedHeight),
+                  new RectangleF(leftmost, topmost, croppedWidth, croppedHeight),
+                  GraphicsUnit.Pixel);
+            }
+            return thumbnail;
+        }
+
+        /// <summary>
+        /// Tries the set resolution.
+        /// </summary>
+        /// <param name="bmp">The BMP.</param>
+        /// <param name="x">The x.</param>
+        /// <param name="y">The y.</param>
+        private static void TrySetResolution(Bitmap bmp, float x, float y)
+        {
+            if (x > 0 && y > 0)
+            {
+                bmp.SetResolution(x, y);
+            }
+        }
+
+        /// <summary>
+        /// Determines whether or not a row of pixels is all whitespace
+        /// </summary>
+        /// <param name="bmp">The BMP.</param>
+        /// <param name="row">The row.</param>
+        /// <param name="width">The width.</param>
+        /// <returns><c>true</c> if [is all white row] [the specified BMP]; otherwise, <c>false</c>.</returns>
+        private static bool IsAllWhiteRow(Bitmap bmp, int row, int width)
+        {
+            for (var i = 0; i < width; ++i)
+            {
+                if (!IsWhiteSpace(bmp.GetPixel(i, row)))
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        /// <summary>
+        /// Determines whether or not a column of pixels is all whitespace
+        /// </summary>
+        /// <param name="bmp">The BMP.</param>
+        /// <param name="col">The col.</param>
+        /// <param name="height">The height.</param>
+        /// <returns><c>true</c> if [is all white column] [the specified BMP]; otherwise, <c>false</c>.</returns>
+        private static bool IsAllWhiteColumn(Bitmap bmp, int col, int height)
+        {
+            for (var i = 0; i < height; ++i)
+            {
+                if (!IsWhiteSpace(bmp.GetPixel(col, i)))
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        /// <summary>
+        /// Determines if a color is whitespace
+        /// </summary>
+        /// <param name="color">The color.</param>
+        /// <returns><c>true</c> if [is white space] [the specified color]; otherwise, <c>false</c>.</returns>
+        private static bool IsWhiteSpace(Color color)
+        {
+            return (color.R == 255 && color.G == 255 && color.B == 255) || color.A == 0;
+        }
+    }
+}
diff --git a/Emby.Drawing/GDI/PercentPlayedDrawer.cs b/Emby.Drawing/GDI/PercentPlayedDrawer.cs
new file mode 100644
index 0000000000..c7afda60e4
--- /dev/null
+++ b/Emby.Drawing/GDI/PercentPlayedDrawer.cs
@@ -0,0 +1,34 @@
+using System;
+using System.Drawing;
+
+namespace Emby.Drawing.GDI
+{
+    public class PercentPlayedDrawer
+    {
+        private const int IndicatorHeight = 8;
+
+        public void Process(Graphics graphics, Size imageSize, double percent)
+        {
+            var y = imageSize.Height - IndicatorHeight;
+
+            using (var backdroundBrush = new SolidBrush(Color.FromArgb(225, 0, 0, 0)))
+            {
+                const int innerX = 0;
+                var innerY = y;
+                var innerWidth = imageSize.Width;
+                var innerHeight = imageSize.Height;
+
+                graphics.FillRectangle(backdroundBrush, innerX, innerY, innerWidth, innerHeight);
+
+                using (var foregroundBrush = new SolidBrush(Color.FromArgb(82, 181, 75)))
+                {
+                    double foregroundWidth = innerWidth;
+                    foregroundWidth *= percent;
+                    foregroundWidth /= 100;
+
+                    graphics.FillRectangle(foregroundBrush, innerX, innerY, Convert.ToInt32(Math.Round(foregroundWidth)), innerHeight);
+                }
+            }
+        }
+    }
+}
diff --git a/Emby.Drawing/GDI/PlayedIndicatorDrawer.cs b/Emby.Drawing/GDI/PlayedIndicatorDrawer.cs
new file mode 100644
index 0000000000..4428e4cbac
--- /dev/null
+++ b/Emby.Drawing/GDI/PlayedIndicatorDrawer.cs
@@ -0,0 +1,32 @@
+using System.Drawing;
+
+namespace Emby.Drawing.GDI
+{
+    public class PlayedIndicatorDrawer
+    {
+        private const int IndicatorHeight = 40;
+        public const int IndicatorWidth = 40;
+        private const int FontSize = 40;
+        private const int OffsetFromTopRightCorner = 10;
+
+        public void DrawPlayedIndicator(Graphics graphics, Size imageSize)
+        {
+            var x = imageSize.Width - IndicatorWidth - OffsetFromTopRightCorner;
+
+            using (var backdroundBrush = new SolidBrush(Color.FromArgb(225, 82, 181, 75)))
+            {
+                graphics.FillEllipse(backdroundBrush, x, OffsetFromTopRightCorner, IndicatorWidth, IndicatorHeight);
+
+                x = imageSize.Width - 45 - OffsetFromTopRightCorner;
+
+                using (var font = new Font("Webdings", FontSize, FontStyle.Regular, GraphicsUnit.Pixel))
+                {
+                    using (var fontBrush = new SolidBrush(Color.White))
+                    {
+                        graphics.DrawString("a", font, fontBrush, x, OffsetFromTopRightCorner - 2);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/Emby.Drawing/GDI/UnplayedCountIndicator.cs b/Emby.Drawing/GDI/UnplayedCountIndicator.cs
new file mode 100644
index 0000000000..6420abb27f
--- /dev/null
+++ b/Emby.Drawing/GDI/UnplayedCountIndicator.cs
@@ -0,0 +1,50 @@
+using System.Drawing;
+
+namespace Emby.Drawing.GDI
+{
+    public class UnplayedCountIndicator
+    {
+        private const int IndicatorHeight = 41;
+        public const int IndicatorWidth = 41;
+        private const int OffsetFromTopRightCorner = 10;
+
+        public void DrawUnplayedCountIndicator(Graphics graphics, Size imageSize, int count)
+        {
+            var x = imageSize.Width - IndicatorWidth - OffsetFromTopRightCorner;
+
+            using (var backdroundBrush = new SolidBrush(Color.FromArgb(225, 82, 181, 75)))
+            {
+                graphics.FillEllipse(backdroundBrush, x, OffsetFromTopRightCorner, IndicatorWidth, IndicatorHeight);
+
+                var text = count.ToString();
+
+                x = imageSize.Width - IndicatorWidth - OffsetFromTopRightCorner;
+                var y = OffsetFromTopRightCorner + 6;
+                var fontSize = 24;
+
+                if (text.Length == 1)
+                {
+                    x += 10;
+                }
+                else if (text.Length == 2)
+                {
+                    x += 3;
+                }
+                else if (text.Length == 3)
+                {
+                    x += 1;
+                    y += 1;
+                    fontSize = 20;
+                }
+
+                using (var font = new Font("Sans-Serif", fontSize, FontStyle.Regular, GraphicsUnit.Pixel))
+                {
+                    using (var fontBrush = new SolidBrush(Color.White))
+                    {
+                        graphics.DrawString(text, font, fontBrush, x, y);
+                    }
+                }
+            }
+        }
+    }
+}