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- using InABox.Core;
- using Syncfusion.Pdf.Parsing;
- using System.Drawing.Drawing2D;
- using System.Drawing.Imaging;
- using System.Globalization;
- using System.IO;
- using System.Runtime.InteropServices;
- using System.Windows;
- using System.Windows.Interop;
- using System.Windows.Media;
- using System.Windows.Media.Imaging;
- using System.Xml.Linq;
- using ColorHelper;
- using Color = System.Drawing.Color;
- using Pen = System.Drawing.Pen;
- using PixelFormat = System.Drawing.Imaging.PixelFormat;
- using Point = System.Drawing.Point;
- using Size = System.Drawing.Size;
- using System.Windows.Controls;
- using System.Drawing;
- using System.Collections.Generic;
- using System;
- using System.Linq;
- using Syncfusion.Pdf.Graphics;
- using Syncfusion.Pdf;
- using System.Diagnostics.CodeAnalysis;
- using System.Runtime;
- using System.Text;
- using Encoder = System.Drawing.Imaging.Encoder;
- namespace InABox.WPF
- {
- public static class ImageUtils
- {
-
- // https://en.wikipedia.org/wiki/List_of_file_signatures
- /* Bytes in c# have a range of 0 to 255 so each byte can be represented as
- * a two digit hex string. */
- private static readonly Dictionary<ImageFormat, string[][]> SignatureTable = new()
- {
- {
- ImageFormat.Jpeg,
- new[]
- {
- new[] { "FF", "D8", "FF", "DB" },
- new[] { "FF", "D8", "FF", "EE" },
- new[] { "FF", "D8", "FF", "E0", "00", "10", "4A", "46", "49", "46", "00", "01" }
- }
- },
- {
- ImageFormat.Gif,
- new[]
- {
- new[] { "47", "49", "46", "38", "37", "61" },
- new[] { "47", "49", "46", "38", "39", "61" }
- }
- },
- {
- ImageFormat.Png,
- new[]
- {
- new[] { "89", "50", "4E", "47", "0D", "0A", "1A", "0A" }
- }
- },
- {
- ImageFormat.Bmp,
- new[]
- {
- new[] { "42", "4D" }
- }
- }
- };
- public static Size Adjust(this Size src, double maxWidth, double maxHeight, bool enlarge = false)
- {
- maxWidth = enlarge ? maxWidth : Math.Min(maxWidth, src.Width);
- maxHeight = enlarge ? maxHeight : Math.Min(maxHeight, src.Height);
- var rnd = Math.Min((decimal)maxWidth / src.Width, (decimal)maxHeight / src.Height);
- return new Size((int)Math.Round(src.Width * rnd), (int)Math.Round(src.Height * rnd));
- }
- public static Bitmap AsGrayScale(this Bitmap source)
- {
- //create a blank bitmap the same size as original
- var newBitmap = new Bitmap(source.Width, source.Height);
- //get a graphics object from the new image
- var g = Graphics.FromImage(newBitmap);
- //create the grayscale ColorMatrix
- var colorMatrix = new ColorMatrix(
- new[]
- {
- new[] { .3f, .3f, .3f, 0, 0 },
- new[] { .59f, .59f, .59f, 0, 0 },
- new[] { .11f, .11f, .11f, 0, 0 },
- new float[] { 0, 0, 0, 1, 0 },
- new float[] { 0, 0, 0, 0, 1 }
- });
- //create some image attributes
- var attributes = new ImageAttributes();
- //set the color matrix attribute
- attributes.SetColorMatrix(colorMatrix);
- //draw the original image on the new image
- //using the grayscale color matrix
- g.DrawImage(source, new Rectangle(0, 0, source.Width, source.Height),
- 0, 0, source.Width, source.Height, GraphicsUnit.Pixel, attributes);
- //dispose the Graphics object
- g.Dispose();
- return newBitmap;
- }
- public static BitmapImage AsBitmapImage(this Bitmap src, int height, int width, bool transparent = true)
- {
- var resized = new Bitmap(src, new Size(width, height));
- return AsBitmapImage(resized, transparent);
- }
- public static BitmapImage AsBitmapImage(this Bitmap src, Color transparent)
- {
- src.MakeTransparent(transparent);
- return src.AsBitmapImage();
- }
- public static Bitmap ChangeColor(this Bitmap image, Color fromColor, Color toColor)
- {
- var attributes = new ImageAttributes();
- attributes.SetRemapTable(new ColorMap[]
- {
- new()
- {
- OldColor = fromColor,
- NewColor = toColor
- }
- }, ColorAdjustType.Bitmap);
- using (var g = Graphics.FromImage(image))
- {
- g.DrawImage(
- image,
- new Rectangle(Point.Empty, image.Size),
- 0, 0, image.Width, image.Height,
- GraphicsUnit.Pixel,
- attributes);
- }
- return image;
- }
- public static Bitmap Fade(this Bitmap source, float opacity)
- {
- var result = new Bitmap(source.Width, source.Height);
- //create a graphics object from the image
- using (var gfx = Graphics.FromImage(result))
- {
- if (opacity < 1.0)
- gfx.Clear(Color.White);
- //create a color matrix object
- var matrix = new ColorMatrix();
- //set the opacity
- matrix.Matrix33 = opacity;
- //create image attributes
- var attributes = new ImageAttributes();
- //set the color(opacity) of the image
- attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
- //now draw the image
- gfx.DrawImage(source, new Rectangle(0, 0, source.Width, source.Height), 0, 0, source.Width, source.Height, GraphicsUnit.Pixel,
- attributes);
- }
- return result;
- }
- public static BitmapImage AsBitmapImage(this Bitmap src, Color replace, Color with)
- {
- return src.ChangeColor(replace, with).AsBitmapImage(false);
- }
- public static Bitmap AsBitmap(this BitmapImage bitmapImage)
- {
- using (var outStream = new MemoryStream())
- {
- BitmapEncoder enc = new BmpBitmapEncoder();
- enc.Frames.Add(BitmapFrame.Create(bitmapImage));
- enc.Save(outStream);
- var bitmap = new Bitmap(outStream);
- return new Bitmap(bitmap);
- }
- }
- public static Bitmap AsBitmap(this BitmapSource source)
- {
- var width = source.PixelWidth;
- var height = source.PixelHeight;
- var stride = width * ((source.Format.BitsPerPixel + 7) / 8);
- var ptr = IntPtr.Zero;
- try
- {
- ptr = Marshal.AllocHGlobal(height * stride);
- source.CopyPixels(new Int32Rect(0, 0, width, height), ptr, height * stride, stride);
- using (var btm = new Bitmap(width, height, stride, PixelFormat.Format1bppIndexed, ptr))
- {
- return new Bitmap(btm);
- }
- }
- finally
- {
- if (ptr != IntPtr.Zero)
- Marshal.FreeHGlobal(ptr);
- }
- }
- public static Bitmap AsBitmap2(this BitmapSource source)
- {
- var bmp = new Bitmap(
- source.PixelWidth,
- source.PixelHeight,
- PixelFormat.Format32bppPArgb);
- var data = bmp.LockBits(
- new Rectangle(Point.Empty, bmp.Size),
- ImageLockMode.WriteOnly,
- PixelFormat.Format32bppPArgb);
- source.CopyPixels(
- Int32Rect.Empty,
- data.Scan0,
- data.Height * data.Stride,
- data.Stride);
- bmp.UnlockBits(data);
- return bmp;
- }
- public static BitmapImage? BitmapImageFromBase64(string base64)
- {
- return BitmapImageFromBytes(Convert.FromBase64String(base64));
- }
- public static BitmapImage? BitmapImageFromBytes(byte[]? data)
- {
- if (data?.Any() != true)
- return null;
-
- var imageSource = new BitmapImage();
- using (var ms = new MemoryStream(data))
- {
- imageSource.BeginInit();
- imageSource.StreamSource = ms;
- imageSource.CacheOption = BitmapCacheOption.OnLoad;
- imageSource.EndInit();
- }
- return imageSource;
- }
-
- public static BitmapImage? BitmapImageFromStream(Stream data)
- {
- var imageSource = new BitmapImage();
- imageSource.BeginInit();
- imageSource.StreamSource = data;
- imageSource.CacheOption = BitmapCacheOption.OnLoad;
- imageSource.EndInit();
- return imageSource;
- }
- public static BitmapImage AsBitmapImage(this Bitmap src, bool transparent = true)
- {
- if (transparent)
- {
- var pixel = src.GetPixel(0, 0);
- if(pixel.A == byte.MaxValue)
- {
- src.MakeTransparent(pixel);
- }
- }
- var bitmapImage = new BitmapImage();
- using (var memory = new MemoryStream())
- {
- src.Save(memory, ImageFormat.Png);
- memory.Position = 0;
- bitmapImage.BeginInit();
- bitmapImage.StreamSource = memory;
- bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
- bitmapImage.EndInit();
- }
- return bitmapImage;
- }
- public static BitmapSource AsBitmapSource(this Metafile metafile, int width, int height, Color background)
- {
- var src = new Bitmap(metafile.Width, metafile.Height);
- src.SetResolution(metafile.HorizontalResolution, metafile.VerticalResolution);
- using (var g = Graphics.FromImage(src))
- {
- g.DrawImage(metafile, 0, 0, metafile.Width, metafile.Height);
- }
- var scale = Math.Min(width / (float)metafile.Width, height / (float)metafile.Height);
- var scaleWidth = src.Width * scale;
- var scaleHeight = src.Height * scale;
- var xoffset = (width - scaleWidth) / 2.0F;
- var yoffset = (height - scaleHeight) / 2.0F;
- using (var bmp = new Bitmap(width, height))
- {
- bmp.SetResolution(metafile.HorizontalResolution, metafile.VerticalResolution);
- using (var g = Graphics.FromImage(bmp))
- {
- g.InterpolationMode = InterpolationMode.High;
- g.CompositingQuality = CompositingQuality.HighQuality;
- g.SmoothingMode = SmoothingMode.AntiAlias;
- g.FillRectangle(new SolidBrush(background), new RectangleF(0, 0, width, height));
- g.DrawImage(src, xoffset, yoffset, scaleWidth, scaleHeight);
- }
- bmp.Save("c:\\development\\emf2bmp.png");
- return Imaging.CreateBitmapSourceFromHBitmap(bmp.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
- }
- }
- public static Bitmap BitmapSourceToBitmap(BitmapSource source)
- {
- if (source == null)
- return null;
- var pixelFormat = System.Drawing.Imaging.PixelFormat.Format32bppArgb; //Bgr32 equiv default
- if (source.Format == PixelFormats.Bgr24)
- pixelFormat = System.Drawing.Imaging.PixelFormat.Format24bppRgb;
- else if (source.Format == PixelFormats.Pbgra32)
- pixelFormat = System.Drawing.Imaging.PixelFormat.Format32bppPArgb;
- else if (source.Format == PixelFormats.Prgba64)
- pixelFormat = System.Drawing.Imaging.PixelFormat.Format64bppPArgb;
- Bitmap bmp = new Bitmap(
- source.PixelWidth,
- source.PixelHeight,
- pixelFormat);
- BitmapData data = bmp.LockBits(
- new Rectangle(System.Drawing.Point.Empty, bmp.Size),
- ImageLockMode.WriteOnly,
- pixelFormat);
- source.CopyPixels(
- Int32Rect.Empty,
- data.Scan0,
- data.Height * data.Stride,
- data.Stride);
- bmp.UnlockBits(data);
- return bmp;
- }
- public static BitmapImage ToBitmapImage(this Bitmap bitmap)
- {
- using (var memory = new MemoryStream())
- {
- bitmap.Save(memory, ImageFormat.Png);
- memory.Position = 0;
- var bitmapImage = new BitmapImage();
- bitmapImage.BeginInit();
- bitmapImage.StreamSource = memory;
- bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
- bitmapImage.EndInit();
- bitmapImage.Freeze();
- return bitmapImage;
- }
- }
- /// <summary>
- /// Load an image from image data; this will return <see langword="null"/> if <paramref name="imageData"/> is <see langword="null"/> or empty.
- /// </summary>
- /// <param name="imageData"></param>
- /// <returns></returns>
- public static BitmapImage? LoadImage(byte[]? imageData)
- {
- if(imageData is null || imageData.Length == 0)
- {
- return null;
- }
- var result = new BitmapImage();
- result.LoadImage(imageData);
- return result;
- }
- private static void LoadImage(this BitmapImage image, byte[] imageData)
- {
- using (var mem = new MemoryStream(imageData))
- {
- mem.Position = 0;
- image.BeginInit();
- image.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
- image.CacheOption = BitmapCacheOption.OnLoad;
- image.UriSource = null;
- image.StreamSource = mem;
- image.EndInit();
- }
- image.Freeze();
- }
-
- public static Bitmap? MergeBitmaps(IEnumerable<Bitmap> bitmaps, int padding)
- {
- if (!bitmaps.Any())
- return null;
-
- var totalwidth = bitmaps.Aggregate(0, (total, next) => total + next.Width + (total > 0 ? padding : 0) );
- var maxheight = bitmaps.Aggregate(0, (max, next) => Math.Max(next.Height,max) );
- Bitmap result = new Bitmap(totalwidth, maxheight);
- using (Graphics g = Graphics.FromImage(result))
- {
- g.Clear(Color.Transparent);
- int left = 0;
- foreach (var bitmap in bitmaps)
- {
- g.DrawImage(bitmap, left, 0);
- left += bitmap.Width + padding;
- }
- }
- return result;
- }
-
- public static byte[] ToArray<T>(this BitmapImage image) where T : BitmapEncoder, new()
- {
- byte[] data;
- var encoder = new T();
- encoder.Frames.Add(BitmapFrame.Create(image));
- using (var ms = new MemoryStream())
- {
- encoder.Save(ms);
- data = ms.ToArray();
- }
- return data;
- }
- public static BitmapImage Resize(this BitmapImage image, int height, int width)
- {
- var buffer = image.ToArray<BmpBitmapEncoder>();
- var ms = new MemoryStream(buffer);
- var result = new BitmapImage();
- result.BeginInit();
- result.CacheOption = BitmapCacheOption.None;
- result.CreateOptions = BitmapCreateOptions.IgnoreColorProfile;
- result.DecodePixelWidth = width;
- result.DecodePixelHeight = height;
- result.StreamSource = ms;
- result.Rotation = Rotation.Rotate0;
- result.EndInit();
- buffer = null;
- return result;
- }
- public static Bitmap Resize(this Bitmap bitmap, int width, int height)
- {
- if ((width == bitmap.Width) && (height == bitmap.Height))
- return bitmap;
- return new Bitmap(bitmap,new Size(width,height));
- }
- public static BitmapImage Scale(this BitmapImage image, int maxheight, int maxwidth)
- {
- var scaleHeight = maxheight / (float)image.Height;
- var scaleWidth = maxwidth / (float)image.Width;
- var scale = Math.Min(scaleHeight, scaleWidth);
- return image.Resize((int)(image.Height * scale), (int)(image.Width * scale));
- }
- public static Bitmap BitmapFromColor(Color color, int width, int height, Color frame)
- {
- var result = new Bitmap(width, height);
- var g = Graphics.FromImage(result);
- g.Clear(color);
- if (frame != Color.Transparent)
- g.DrawRectangle(new Pen(new SolidBrush(frame), 1), new Rectangle(0, 0, width-1, height-1));
- return result;
- }
-
- public static Bitmap BitmapFromColor(System.Windows.Media.Color color, int width, int height, System.Windows.Media.Color frame)
- {
- var result = new Bitmap(width, height);
- var g = Graphics.FromImage(result);
- g.Clear(Color.FromArgb(color.A,color.R,color.G,color.B));
- if (frame != Colors.Transparent)
- g.DrawRectangle(new Pen(new SolidBrush(Color.FromArgb(frame.A,frame.R,frame.G,frame.B)), 1F), new Rectangle(0, 0, width-1, height-1));
- return result;
- }
- public static Color MixColors(this Color color1, double factor, Color color2)
- {
- if (factor < 0) throw new Exception($"Factor {factor} must be >= 0.");
- if (factor > 1) throw new Exception($"Factor {factor} must be <= 1.");
- if (factor == 0) return color2;
- if (factor == 1) return color1;
- var factor1 = 1 - factor;
- return Color.FromArgb(
- (byte)(color1.A * factor + color2.A * factor1),
- (byte)(color1.R * factor + color2.R * factor1),
- (byte)(color1.G * factor + color2.G * factor1),
- (byte)(color1.B * factor + color2.B * factor1));
- }
- public static System.Windows.Media.Color MixColors(this System.Windows.Media.Color color1, double factor, System.Windows.Media.Color color2)
- {
- if (factor < 0) throw new Exception($"Factor {factor} must be >= 0.");
- if (factor > 1) throw new Exception($"Factor {factor} must be <= 1.");
- if (factor == 0) return color2;
- if (factor == 1) return color1;
- var factor1 = 1 - factor;
- return System.Windows.Media.Color.FromArgb(
- (byte)(color1.A * factor + color2.A * factor1),
- (byte)(color1.R * factor + color2.R * factor1),
- (byte)(color1.G * factor + color2.G * factor1),
- (byte)(color1.B * factor + color2.B * factor1));
- }
- public static string ColorToString(Color color)
- {
- return string.Format("#{0:X2}{1:X2}{2:X2}{3:X2}",
- color.A,
- color.R,
- color.G,
- color.B
- );
- }
- public static Color StringToColor(string colorcode)
- {
- var col = Color.Transparent;
- if (!string.IsNullOrEmpty(colorcode))
- {
- var code = colorcode.Replace("#", "");
- if (code.Length == 6)
- col = Color.FromArgb(255,
- byte.Parse(code.Substring(0, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(2, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(4, 2), NumberStyles.HexNumber));
- else if (code.Length == 8)
- col = Color.FromArgb(
- byte.Parse(code.Substring(0, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(2, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(4, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(6, 2), NumberStyles.HexNumber));
- }
- return col;
- }
- public static System.Windows.Media.Color StringToMediaColor(string colorcode)
- {
- var col = Colors.Transparent;
- if (!string.IsNullOrEmpty(colorcode))
- {
- var code = colorcode.Replace("#", "");
- if (code.Length == 6)
- col = System.Windows.Media.Color.FromArgb(255,
- byte.Parse(code.Substring(0, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(2, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(4, 2), NumberStyles.HexNumber));
- else if (code.Length == 8)
- col = System.Windows.Media.Color.FromArgb(
- byte.Parse(code.Substring(0, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(2, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(4, 2), NumberStyles.HexNumber),
- byte.Parse(code.Substring(6, 2), NumberStyles.HexNumber));
- }
- return col;
- }
- /// <summary>
- /// Creates color with corrected brightness.
- /// </summary>
- /// <param name="color">Color to correct.</param>
- /// <param name="correctionFactor">
- /// The brightness correction factor. Must be between -1 and 1.
- /// Negative values produce darker colors.
- /// </param>
- /// <returns>
- /// Corrected <see cref="Color" /> structure.
- /// </returns>
- public static System.Windows.Media.Color AdjustBrightness(this System.Windows.Media.Color color, float correctionFactor)
- {
- float red = color.R;
- float green = color.G;
- float blue = color.B;
- if (correctionFactor < 0)
- {
- correctionFactor = 1 + correctionFactor;
- red *= correctionFactor;
- green *= correctionFactor;
- blue *= correctionFactor;
- }
- else
- {
- red = (255 - red) * correctionFactor + red;
- green = (255 - green) * correctionFactor + green;
- blue = (255 - blue) * correctionFactor + blue;
- }
- return System.Windows.Media.Color.FromArgb(color.A, (byte)red, (byte)green, (byte)blue);
- }
- public static bool TryGetImageType(byte[] imageData, [NotNullWhen(true)] out ImageFormat? format)
- {
- foreach (var signatureEntry in SignatureTable)
- foreach (var signature in signatureEntry.Value)
- {
- var isMatch = true;
- for (var i = 0; i < signature.Length; i++)
- {
- var signatureByte = signature[i];
- // ToString("X") gets the hex representation and pads it to always be length 2
- var imageByte = imageData[i]
- .ToString("X2");
- if (signatureByte == imageByte)
- continue;
- isMatch = false;
- break;
- }
- if (isMatch)
- {
- format = signatureEntry.Key;
- return true;
- }
- }
- format = null;
- return false;
- }
- /// <summary>
- /// Takes a byte array and determines the image file type by
- /// comparing the first few bytes of the file to a list of known
- /// image file signatures.
- /// </summary>
- /// <param name="imageData">Byte array of the image data</param>
- /// <returns>ImageFormat corresponding to the image file format</returns>
- /// <exception cref="ArgumentException">Thrown if the image type can't be determined</exception>
- public static ImageFormat GetImageType(byte[] imageData)
- {
- if(TryGetImageType(imageData, out var format))
- {
- return format;
- }
- throw new ArgumentException("The byte array did not match any known image file signatures.");
- }
- public static System.Drawing.Bitmap Invert(this System.Drawing.Bitmap source)
- {
- Bitmap bmpDest = new Bitmap(source.Width,source.Height);
- ColorMatrix clrMatrix = new ColorMatrix(new float[][]
- {
- new float[] {-1, 0, 0, 0, 0},
- new float[] {0, -1, 0, 0, 0},
- new float[] {0, 0, -1, 0, 0},
- new float[] {0, 0, 0, 1, 0},
- new float[] {1, 1, 1, 0, 1}
- });
- using (ImageAttributes attrImage = new ImageAttributes())
- {
- attrImage.SetColorMatrix(clrMatrix);
- using (Graphics g = Graphics.FromImage(bmpDest))
- {
- g.DrawImage(source, new Rectangle(0, 0,
- source.Width, source.Height), 0, 0,
- source.Width, source.Height, GraphicsUnit.Pixel,
- attrImage);
- }
- }
- return bmpDest;
- }
-
-
- public static Font AdjustSize(this Font font, Graphics graphics, string text, int width)
- {
- Font result = null;
- for (int size = (int)font.Size; size > 0; size--)
- {
- result = new Font(font.Name, size, font.Style);
- SizeF adjustedSizeNew = graphics.MeasureString(text, result);
- if (width > Convert.ToInt32(adjustedSizeNew.Width))
- return result;
- }
- return result;
-
- }
- public static Bitmap WatermarkImage(this Bitmap image, String text, System.Windows.Media.Color color, int maxfontsize = 0)
- {
- return image.WatermarkImage(text, Color.FromArgb(color.A, color.R, color.G, color.B),maxfontsize);
- }
-
- public static Bitmap WatermarkImage(this Bitmap image, String text, Color color, int maxfontsize = 0)
- {
- int w = image.Width;
- int h = image.Height;
- Bitmap result = new System.Drawing.Bitmap(w, h);
- Graphics graphics = System.Drawing.Graphics.FromImage((System.Drawing.Image)result);
- graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
- graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
- graphics.Clear(System.Drawing.Color.Transparent);
- graphics.DrawImage(image, 0, 0, w, h);
-
- Font drawFont = new System.Drawing.Font("Arial", 96).AdjustSize(graphics,text,(int)(image.Width * 0.9F));
- if ((maxfontsize > 0) && (drawFont.Size > maxfontsize))
- drawFont = new System.Drawing.Font("Arial", maxfontsize);
-
- SolidBrush drawBrush = new System.Drawing.SolidBrush(color);
-
- StringFormat stringFormat = new StringFormat();
- stringFormat.Alignment = StringAlignment.Center;
- stringFormat.LineAlignment = StringAlignment.Center;
-
- graphics.DrawString(text, drawFont, drawBrush, new Rectangle(0,0,w,h), stringFormat);
-
- graphics.Dispose();
- return result;
- }
-
- private static System.Windows.Media.Color AdjustColor(System.Windows.Media.Color color, Action<HSL> action)
- {
- var hsl = ColorHelper.ColorConverter.RgbToHsl(new RGB(color.R,color.G,color.B));
- action(hsl);
- var rgb = ColorHelper.ColorConverter.HslToRgb(hsl);
- return System.Windows.Media.Color.FromArgb(color.A, rgb.R, rgb.G, rgb.B);
- }
- private static int AdjustPercentage(int original, int percentage)
- {
- int percent = Math.Min(100, Math.Max(-100, percentage));
- int newvalue = (percent < 0)
- ? (byte)((percent * original) / 100)
- : (byte)((percent * (100 - original)) / 100);
- return original + newvalue;
- }
-
- public static System.Windows.Media.Color AdjustHue(this System.Windows.Media.Color color, int degrees) =>
- AdjustColor(color, (hsl => hsl.H += degrees));
- public static System.Windows.Media.Color AdjustSaturation(this System.Windows.Media.Color color, int percentage) =>
- AdjustColor(color, (hsl =>
- {
- hsl.S = (byte)AdjustPercentage(hsl.S, percentage);
- }));
-
- public static System.Windows.Media.Color SetSaturation(this System.Windows.Media.Color color, int percentage) =>
- AdjustColor(color, (hsl => hsl.S = (byte)percentage));
-
- public static System.Windows.Media.Color AdjustLightness(this System.Windows.Media.Color color, int percentage) =>
- AdjustColor(color, (hsl =>
- {
- hsl.L = (byte)AdjustPercentage(hsl.L, percentage);
- }));
- public static System.Windows.Media.Color SetLightness(this System.Windows.Media.Color color, int percentage) =>
- AdjustColor(color, (hsl => hsl.L = (byte)percentage));
- public static System.Windows.Media.Color SetAlpha(this System.Windows.Media.Color color, byte alpha) =>
- System.Windows.Media.Color.FromArgb(alpha, color.R, color.G, color.B);
- public static HSL ToHSL(this System.Windows.Media.Color color)
- {
- return ColorHelper.ColorConverter.RgbToHsl(new RGB(color.R, color.G, color.B));
- }
- public static System.Windows.Media.Color ToColor(this HSL hsl)
- {
- var rgb = ColorHelper.ColorConverter.HslToRgb(hsl);
- return System.Windows.Media.Color.FromRgb(rgb.R, rgb.G, rgb.B);
- }
-
- public static HSL ToHSL(this System.Drawing.Color color)
- {
- return ColorHelper.ColorConverter.RgbToHsl(new RGB(color.R, color.G, color.B));
- }
- public static System.Windows.Media.Color GetForegroundColor(this System.Windows.Media.Color c, int threshold = 130)
- {
- var perceivedbrightness = (int)Math.Sqrt(
- c.R * c.R * .299 +
- c.G * c.G * .587 +
- c.B * c.B * .114);
- return perceivedbrightness >= threshold ? Colors.Black : Colors.White;
- }
-
- public static uint ToUint(this System.Drawing.Color color) => (uint)((color.A << 24) | (color.R << 16) | (color.G << 8) | (color.B << 0));
- public static uint ToUint(this System.Windows.Media.Color color) => (uint)((color.A << 24) | (color.R << 16) | (color.G << 8) | (color.B << 0));
- public enum ImageEncoding
- {
- JPEG
- }
- public static ImageCodecInfo? GetEncoder(ImageFormat format)
- {
- ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
- foreach (ImageCodecInfo codec in codecs)
- {
- if (codec.FormatID == format.Guid)
- {
- return codec;
- }
- }
- return null;
- }
- public static byte[] BitmapToPdf(Bitmap bitmap)
- {
- byte[]? _result = null;
- using (var _stream = new MemoryStream())
- {
- bitmap.Save(_stream, ImageFormat.Png);
- _result = BitmapToPdf(_stream);
- }
- return _result;
- }
-
- public static byte[] BitmapToPdf(byte[] bitmap)
- {
- byte[] _result = null;
- using (var _stream = new MemoryStream(bitmap))
- _result = BitmapToPdf(_stream);
-
- return _result;
- }
- public static byte[] BitmapToPdf(Stream stream)
- {
- byte[]? _result = null;
- PdfDocument _doc = new PdfDocument();
- PdfPage _page = _doc.Pages.Add();
- PdfGraphics _graphics = _page.Graphics;
- stream.Position = 0;
- PdfBitmap _image = new PdfBitmap(stream);
- _graphics.DrawImage(_image, 0, 0);
- using (var _out = new MemoryStream())
- {
- _doc.Save(_out);
- _out.Position = 0;
- _doc.Close(true);
- _result = _out.ToArray();
- }
- return _result;
- }
-
-
- public static bool IsPdf(byte[] data)
- {
- var pdfBytes = Encoding.ASCII.GetBytes("%PDF-");
- return data.Take(pdfBytes.Length).SequenceEqual(pdfBytes);
- }
- public static byte[] GetPDFThumbnail(byte[] pdfData, int width, int height)
- {
- PdfLoadedDocument loadeddoc = new PdfLoadedDocument(pdfData);
- Bitmap image = loadeddoc.ExportAsImage(0, new SizeF(width, height), true);
- MemoryStream stream = new MemoryStream();
- image.Save(stream, ImageFormat.Jpeg);
- return stream.ToArray();
- }
-
- public static byte[] PDFToBitmap(byte[] pdfData, int page)
- {
- PdfLoadedDocument loadeddoc = new PdfLoadedDocument(pdfData);
- Bitmap image = loadeddoc.ExportAsImage(page, new ImageExportSettings() { KeepAspectRatio = true });
- MemoryStream stream = new MemoryStream();
- image.Save(stream, ImageFormat.Jpeg);
- return stream.ToArray();
- }
- [System.Runtime.InteropServices.DllImport("gdi32.dll")]
- public static extern bool DeleteObject(IntPtr hObject);
- public static List<ImageSource> RenderPDFToImageSources(byte[] pdfData, ImageEncoding encoding = ImageEncoding.JPEG)
- {
- using var profiler = new Profiler(true);
- var rendered = new List<ImageSource>();
- var loadeddoc = new PdfLoadedDocument(pdfData);
- loadeddoc.FlattenAnnotations();
- var images = loadeddoc.ExportAsImage(0, loadeddoc.Pages.Count - 1);
- if (images != null)
- foreach (var image in images)
- {
- var hBitmap = image.GetHbitmap();
- try
- {
- var source = (ImageSource)Imaging.CreateBitmapSourceFromHBitmap(
- hBitmap,
- IntPtr.Zero,
- Int32Rect.Empty,
- BitmapSizeOptions.FromEmptyOptions());
- source.Freeze();
- rendered.Add(source);
- }
- finally
- {
- DeleteObject(hBitmap);
- }
- }
- return rendered;
- }
- public static List<byte[]> RenderPDFToImageBytes(byte[] pdfData, ImageEncoding encoding = ImageEncoding.JPEG)
- {
- var rendered = new List<byte[]>();
- PdfLoadedDocument loadeddoc = new PdfLoadedDocument(pdfData);
- loadeddoc.FlattenAnnotations();
- Bitmap[] images = loadeddoc.ExportAsImage(0, loadeddoc.Pages.Count - 1);
- var jpgEncoder = GetEncoder(ImageFormat.Jpeg)!;
- var quality = Encoder.Quality;
- var encodeParams = new EncoderParameters(1);
- encodeParams.Param[0] = new EncoderParameter(quality, 100L);
- if (images != null)
- foreach (var image in images)
- {
- using (var data = new MemoryStream())
- {
- image.Save(data, jpgEncoder, encodeParams);
- rendered.Add(data.ToArray());
- }
- }
- return rendered;
- }
- public static List<byte[]> RenderTextFileToImages(string textData)
- {
- var pdfDocument = new PdfDocument();
- var page = pdfDocument.Pages.Add();
- var font = new PdfStandardFont(PdfFontFamily.Courier, 14);
- var textElement = new PdfTextElement(textData, font);
- var layoutFormat = new PdfLayoutFormat
- {
- Layout = PdfLayoutType.Paginate,
- Break = PdfLayoutBreakType.FitPage
- };
- textElement.Draw(page, new RectangleF(0, 0, page.GetClientSize().Width, page.GetClientSize().Height), layoutFormat);
- using var docStream = new MemoryStream();
- pdfDocument.Save(docStream);
- var loadeddoc = new PdfLoadedDocument(docStream.ToArray());
- Bitmap[] bmpImages = loadeddoc.ExportAsImage(0, loadeddoc.Pages.Count - 1);
- var jpgEncoder = GetEncoder(ImageFormat.Jpeg)!;
- var quality = Encoder.Quality;
- var encodeParams = new EncoderParameters(1);
- encodeParams.Param[0] = new EncoderParameter(quality, 100L);
- var images = new List<byte[]>();
- if (bmpImages != null)
- foreach (var image in bmpImages)
- {
- using var data = new MemoryStream();
- image.Save(data, jpgEncoder, encodeParams);
- images.Add(data.ToArray());
- }
- return images;
- }
- public static ContentControl CreatePreviewWindowButtonContent(string caption, Bitmap bitmap)
- {
- Frame frame = new Frame();
- frame.Padding = new Thickness(0);
- frame.Margin = new Thickness(10, 10, 10, 5);
- Grid grid = new Grid();
- grid.Margin = new Thickness(0);
- grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Star) });
- grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Auto) });
- var img = new System.Windows.Controls.Image
- {
- Source = bitmap.AsBitmapImage(),
- Height = 32.0F,
- Width = 32.0F,
- Margin = new Thickness(10)
- };
- img.SetValue(Grid.RowProperty, 0);
- img.Margin = new Thickness(0);
- grid.Children.Add(img);
- var txt = new System.Windows.Controls.TextBox();
- txt.IsEnabled = false;
- txt.Text = caption;
- txt.BorderThickness = new Thickness(0);
- txt.TextWrapping = TextWrapping.WrapWithOverflow;
- txt.MaxWidth = 90;
- txt.HorizontalContentAlignment = System.Windows.HorizontalAlignment.Center;
- txt.SetValue(Grid.RowProperty, 1);
- grid.Children.Add(txt);
- frame.Content = grid;
- return frame;
- }
- public static String AsExtension(this ImageFormat format)
- {
- if (format.Equals(ImageFormat.Bmp) || format.Equals(ImageFormat.MemoryBmp))
- return "bmp";
- if (format.Equals(ImageFormat.Emf))
- return "emf";
- if (format.Equals(ImageFormat.Wmf))
- return "wmf";
- if (format.Equals(ImageFormat.Gif))
- return "gif";
- if (format.Equals(ImageFormat.Jpeg))
- return "jpeg";
- if (format.Equals(ImageFormat.Png))
- return "png";
- if (format.Equals(ImageFormat.Tiff))
- return "tiff";
- if (format.Equals(ImageFormat.Exif))
- return "exif";
- if (format.Equals(ImageFormat.Icon))
- return "ico";
- return "";
- }
-
- public static bool IsEqual(this BitmapImage? image1, BitmapImage? image2)
- {
- if (image1 == null || image2 == null)
- return false;
- return image1.ToBytes().SequenceEqual(image2.ToBytes());
- }
- public static byte[] ToBytes(this BitmapImage image)
- {
- byte[] data = new byte[] { };
- if (image != null)
- {
- try
- {
- var encoder = new BmpBitmapEncoder();
- encoder.Frames.Add(BitmapFrame.Create(image));
- using (MemoryStream ms = new MemoryStream())
- {
- encoder.Save(ms);
- data = ms.ToArray();
- }
- return data;
- }
- catch (Exception ex)
- {
- }
- }
- return data;
- }
- }
- }
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