using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Runtime.InteropServices; namespace Toolbox.Library { public class BitmapExtension { public BitmapExtension() { } public static Bitmap PaintImage(Brush brush, Bitmap input) { return input; Bitmap colorBitmap = new Bitmap(input.Width, input.Height); using (var g = Graphics.FromImage(colorBitmap)) { Rectangle rect = new Rectangle(0, 0, colorBitmap.Width, colorBitmap.Height); g.FillRectangle(brush, rect); return MultiplyImages(input, colorBitmap); } } public static Bitmap MultiplyImages(Bitmap input1, Bitmap input2) { BitmapData bmData = input1.LockBits(new Rectangle(0, 0, input1.Width, input1.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; BitmapData cmData = input2.LockBits(new Rectangle(0, 0, input2.Width, input2.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int cstride = cmData.Stride; System.IntPtr cScan0 = cmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; byte* p2 = (byte*)(void*)cScan0; int nOffset = stride - input1.Width * 4; byte red, green, blue, alpha; for (int y = 0; y < input1.Height; ++y) { for (int x = 0; x < input1.Width; ++x) { blue = (byte)(p[0] * p2[0] / 255); green = (byte)(p[1] * p2[1] / 255); red = (byte)(p[2] * p2[2] / 255); alpha = (byte)(p[3] * p2[3] / 255); p += 4; p2 += 4; } p += nOffset; p2 += nOffset; } } input1.UnlockBits(bmData); input2.UnlockBits(cmData); return input1; } public static Bitmap FillColor(int Width, int Height, Color color) { Bitmap Bmp = new Bitmap(Width, Height); using (Graphics gfx = Graphics.FromImage(Bmp)) using (SolidBrush brush = new SolidBrush(color)) { gfx.FillRectangle(brush, 0, 0, Width, Height); } return Bmp; } public static string FileFilter { get { return "Supported Formats|*.png;*.tga;*.jpg;*.tiff|" + "Portable Network Graphics |*.png|" + "Joint Photographic Experts Group |*.jpg|" + "Bitmap Image |*.bmp|" + "Tagged Image File Format |*.tiff|" + "All files(*.*)|*.*"; } } public static List GenerateMipMaps(Bitmap bitmap) { List datas = new List(); datas.Add(ImageToByte(bitmap)); while (bitmap.Width / 2 > 0 && bitmap.Height / 2 > 0) { bitmap = Resize(bitmap, bitmap.Width / 2, bitmap.Height / 2); datas.Add(ImageToByte(bitmap)); } return datas; } public static Bitmap Resize(Image original, Size size) { return ResizeImage(original, size.Width, size.Height); } public static Bitmap Resize(Image original, uint width, uint height) { return ResizeImage(original, (int)width, (int)height); } public static Bitmap Resize(Image original, int width, int height) { return ResizeImage(original, width, height); } public static Bitmap ReplaceChannel(Image OriginalImage, Image ChannelImage, STChannelType ChannelType) { Bitmap b = new Bitmap(OriginalImage); Bitmap c = new Bitmap(ChannelImage, new Size(b.Width, b.Height)); //Force to be same size c = GrayScale(c); //Convert to grayscale BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; BitmapData cmData = c.LockBits(new Rectangle(0, 0, c.Width, c.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int cstride = cmData.Stride; System.IntPtr cScan0 = cmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; byte* channelPointer = (byte*)(void*)cScan0; int nOffset = stride - b.Width * 4; byte red, green, blue, alpha; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { blue = p[0]; green = p[1]; red = p[2]; alpha = p[3]; if (ChannelType == STChannelType.Red) { p[2] = channelPointer[2]; p[1] = green; p[0] = blue; p[3] = alpha; } else if (ChannelType == STChannelType.Green) { p[2] = red; p[1] = channelPointer[2]; p[0] = blue; p[3] = alpha; } else if (ChannelType == STChannelType.Blue) { p[2] = red; p[1] = green; p[0] = channelPointer[2]; p[3] = alpha; } else if (ChannelType == STChannelType.Alpha) { p[2] = red; p[1] = green; p[0] = blue; p[3] = channelPointer[2]; } p += 4; channelPointer += 4; } p += nOffset; channelPointer += nOffset; } } b.UnlockBits(bmData); c.UnlockBits(cmData); return b; } public static Bitmap SwapBlueRedChannels(Bitmap orig) { Bitmap b = orig; if (orig.PixelFormat != PixelFormat.Format32bppArgb) { b = new Bitmap(orig.Width, orig.Height, PixelFormat.Format32bppArgb); using (Graphics gr = Graphics.FromImage(b)) { gr.DrawImage(orig, new Rectangle(0, 0, b.Width, b.Height)); } } BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; int nOffset = stride - b.Width * 4; byte red, green, blue, alpha; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { blue = p[0]; green = p[1]; red = p[2]; alpha = p[3]; p[0] = red; p[1] = green; p[2] = blue; p[3] = alpha; p += 4; } p += nOffset; } } b.UnlockBits(bmData); return b; } public static Bitmap ResizeImage(Image image, int width, int height, InterpolationMode interpolationMode = InterpolationMode.HighQualityBicubic, SmoothingMode smoothingMode = SmoothingMode.HighQuality) { if (width == 0) width = 1; if (height == 0) height = 1; var destRect = new Rectangle(0, 0, width, height); var destImage = new Bitmap(width, height); destImage.SetResolution(image.HorizontalResolution, image.VerticalResolution); using (var graphics = Graphics.FromImage(destImage)) { graphics.CompositingMode = CompositingMode.SourceCopy; graphics.CompositingQuality = CompositingQuality.HighQuality; graphics.InterpolationMode = interpolationMode; graphics.SmoothingMode = smoothingMode; graphics.PixelOffsetMode = PixelOffsetMode.HighQuality; using (var wrapMode = new ImageAttributes()) { wrapMode.SetWrapMode(WrapMode.TileFlipXY); graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, wrapMode); } } return destImage; } public static Bitmap GetBitmap(byte[] Buffer, int Width, int Height, PixelFormat pixelFormat = PixelFormat.Format32bppArgb) { Rectangle Rect = new Rectangle(0, 0, Width, Height); Bitmap Img = new Bitmap(Width, Height, pixelFormat); BitmapData ImgData = Img.LockBits(Rect, ImageLockMode.WriteOnly, Img.PixelFormat); if (Buffer.Length > ImgData.Stride * Img.Height) throw new Exception($"Invalid Buffer Length ({Buffer.Length})!!!"); Marshal.Copy(Buffer, 0, ImgData.Scan0, Buffer.Length); Img.UnlockBits(ImgData); return Img; } public static Bitmap SetChannel(Bitmap b, STChannelType channelR, STChannelType channelG, STChannelType channelB, STChannelType channelA) { BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; int nOffset = stride - b.Width * 4; byte red, green, blue, alpha; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { blue = p[0]; green = p[1]; red = p[2]; alpha = p[3]; p[2] = SetChannelByte(channelR, red, green, blue, alpha); p[1] = SetChannelByte(channelG, red, green, blue, alpha); p[0] = SetChannelByte(channelB, red, green, blue, alpha); p[3] = SetChannelByte(channelA, red, green, blue, alpha); p += 4; } p += nOffset; } } b.UnlockBits(bmData); return b; } private static byte SetChannelByte(STChannelType channel, byte r, byte g, byte b, byte a) { switch (channel) { case STChannelType.Red: return r; case STChannelType.Green: return g; case STChannelType.Blue: return b; case STChannelType.Alpha: return a; case STChannelType.One: return 255; case STChannelType.Zero: return 0; default: throw new Exception("Unknown channel type! " + channel); } } public static Bitmap ShowChannel(Bitmap b, STChannelType channel) { BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; int nOffset = stride - b.Width * 4; byte red, green, blue, alpha; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { blue = p[0]; green = p[1]; red = p[2]; alpha = p[3]; if (channel == STChannelType.Red) { p[0] = red; p[1] = red; p[2] = red; p[3] = 255; } else if (channel == STChannelType.Green) { p[0] = green; p[1] = green; p[2] = green; p[3] = 255; } else if (channel == STChannelType.Blue) { p[0] = blue; p[1] = blue; p[2] = blue; p[3] = 255; } else if (channel == STChannelType.Alpha) { p[0] = alpha; p[1] = alpha; p[2] = alpha; p[3] = 255; } p += 4; } p += nOffset; } } b.UnlockBits(bmData); return b; } public static bool SetChannels(Bitmap b, bool UseRed, bool UseBlue, bool UseGreen, bool UseAlpha) { BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; int nOffset = stride - b.Width * 4; byte red, green, blue, alpha; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { blue = p[0]; green = p[1]; red = p[2]; alpha = p[3]; if (!UseRed) red = 0; if (!UseGreen) green = 0; if (!UseBlue) blue = 0; if (!UseAlpha) alpha = 0; p[2] = red; p[1] = green; p[0] = blue; p[3] = alpha; p += 4; } p += nOffset; } } b.UnlockBits(bmData); return true; } public static Bitmap GrayScale(Image b, bool removeAlpha = false) { return GrayScale(new Bitmap(b), removeAlpha); } public static Bitmap GrayScale(Bitmap b, bool removeAlpha = false) { BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; int nOffset = stride - b.Width * 4; byte red, green, blue, alpha; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { blue = p[0]; green = p[1]; red = p[2]; if (removeAlpha) alpha = 255; else alpha = p[3]; p[0] = p[1] = p[2] = (byte)(.299 * red + .587 * green + .114 * blue); p += 4; } p += nOffset; } } b.UnlockBits(bmData); return b; } public static Bitmap EncodeHDRAlpha(Image image, float gamma = 2.2f) { var b = new Bitmap(image); BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; int nOffset = stride - b.Width * 4; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { float alpha = p[3] / 255f; for (int i = 0; i < 3; i++) { var col = (p[i] / 255f) * (float)Math.Pow(alpha, 4) * 1024; col = col / (col + 1.0f); col = (float)Math.Pow(col, 1.0f / gamma); p[i] = (byte)(col * 255); } p[3] = 255; p += 4; } p += nOffset; } } b.UnlockBits(bmData); return b; } public static bool Invert(Bitmap b) { BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* p = (byte*)(void*)Scan0; int nOffset = stride - b.Width * 3; int nWidth = b.Width * 3; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < nWidth; ++x) { p[0] = (byte)(255 - p[0]); ++p; } p += nOffset; } } b.UnlockBits(bmData); return true; } public static Bitmap HueStaturationBrightnessScale(Bitmap image, bool EditHue, bool EditSaturation, bool EditBrightness, float HueScale = 255, float SaturationScale = 0.5f, float BrightnessScale = 0.5f) { Bitmap b = new Bitmap(image); BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); int stride = bmData.Stride; System.IntPtr Scan0 = bmData.Scan0; unsafe { byte* pointer = (byte*)(void*)Scan0; int bytesPerPixel = 4; int nOffset = stride - b.Width * bytesPerPixel; byte red, green, blue, alpha; for (int y = 0; y < b.Height; ++y) { for (int x = 0; x < b.Width; ++x) { blue = pointer[0]; green = pointer[1]; red = pointer[2]; alpha = pointer[3]; double hue, sat, val; ColorToHSV(Color.FromArgb(alpha, red, green, blue), out hue, out sat, out val); var color = ColorFromHSV(hue * HueScale, sat * SaturationScale, val * BrightnessScale); pointer[2] = color.R; pointer[1] = color.G; pointer[0] = color.B; pointer[3] = alpha; pointer += bytesPerPixel; } pointer += nOffset; } } b.UnlockBits(bmData); return b; } public static void ColorToHSV(Color color, out double hue, out double saturation, out double value) { int max = Math.Max(color.R, Math.Max(color.G, color.B)); int min = Math.Min(color.R, Math.Min(color.G, color.B)); hue = color.GetHue(); saturation = (max == 0) ? 0 : 1d - (1d * min / max); value = max / 255d; } public static Color ColorFromHSV(double hue, double saturation, double value) { int hi = Convert.ToInt32(Math.Floor(hue / 60)) % 6; double f = hue / 60 - Math.Floor(hue / 60); value = value * 255; int v = Convert.ToInt32(value); int p = Convert.ToInt32(value * (1 - saturation)); int q = Convert.ToInt32(value * (1 - f * saturation)); int t = Convert.ToInt32(value * (1 - (1 - f) * saturation)); if (hi == 0) return Color.FromArgb(255, v, t, p); else if (hi == 1) return Color.FromArgb(255, q, v, p); else if (hi == 2) return Color.FromArgb(255, p, v, t); else if (hi == 3) return Color.FromArgb(255, p, q, v); else if (hi == 4) return Color.FromArgb(255, t, p, v); else return Color.FromArgb(255, v, p, q); } public static void RgbToHls(int r, int g, int b, out double h, out double l, out double s) { // Convert RGB to a 0.0 to 1.0 range. double double_r = r / 255.0; double double_g = g / 255.0; double double_b = b / 255.0; // Get the maximum and minimum RGB components. double max = double_r; if (max < double_g) max = double_g; if (max < double_b) max = double_b; double min = double_r; if (min > double_g) min = double_g; if (min > double_b) min = double_b; double diff = max - min; l = (max + min) / 2; if (Math.Abs(diff) < 0.00001) { s = 0; h = 0; // H is really undefined. } else { if (l <= 0.5) s = diff / (max + min); else s = diff / (2 - max - min); double r_dist = (max - double_r) / diff; double g_dist = (max - double_g) / diff; double b_dist = (max - double_b) / diff; if (double_r == max) h = b_dist - g_dist; else if (double_g == max) h = 2 + r_dist - b_dist; else h = 4 + g_dist - r_dist; h = h * 60; if (h < 0) h += 360; } } // Convert an HLS value into an RGB value. public static void HlsToRgb(double h, double l, double s, out int r, out int g, out int b) { double p2; if (l <= 0.5) p2 = l * (1 + s); else p2 = l + s - l * s; double p1 = 2 * l - p2; double double_r, double_g, double_b; if (s == 0) { double_r = l; double_g = l; double_b = l; } else { double_r = QqhToRgb(p1, p2, h + 120); double_g = QqhToRgb(p1, p2, h); double_b = QqhToRgb(p1, p2, h - 120); } // Convert RGB to the 0 to 255 range. r = (int)(double_r * 255.0); g = (int)(double_g * 255.0); b = (int)(double_b * 255.0); } private static double QqhToRgb(double q1, double q2, double hue) { if (hue > 360) hue -= 360; else if (hue < 0) hue += 360; if (hue < 60) return q1 + (q2 - q1) * hue / 60; if (hue < 180) return q2; if (hue < 240) return q1 + (q2 - q1) * (240 - hue) / 60; return q1; } private static void ConvertBgraToRgba(byte[] bytes) { for (int i = 0; i < bytes.Length; i += 4) { var temp = bytes[i]; bytes[i] = bytes[i + 2]; bytes[i + 2] = temp; } } public static Bitmap CreateImageThumbnail(Bitmap image, int width, int height) { int tw, th, tx, ty; int w = image.Width; int h = image.Height; double whRatio = (double)w / h; if (image.Width >= image.Height) { tw = width; th = (int)(tw / whRatio); } else { th = height; tw = (int)(th * whRatio); } tx = (width - tw) / 2; ty = (height - th) / 2; Bitmap thumb = new Bitmap(width, height, image.PixelFormat); Graphics g = Graphics.FromImage(thumb); // g.Clear(Color.White); g.InterpolationMode = InterpolationMode.NearestNeighbor; g.DrawImage(image, new Rectangle(tx, ty, tw, th), new Rectangle(0, 0, w, h), GraphicsUnit.Pixel); return thumb; } public static Bitmap AdjustBrightness(Image image, float level) { ImageAttributes attributes = new ImageAttributes(); ColorMatrix cm = new ColorMatrix(new float[][] { new float[] { level, 0, 0, 0, 0}, new float[] {0, level, 0, 0, 0}, new float[] {0, 0, level, 0, 0}, new float[] {0, 0, 0, 1, 0}, new float[] {0, 0, 0, 0, 1}, }); attributes.SetColorMatrix(cm); Point[] points = { new Point(0, 0), new Point(image.Width, 0), new Point(0, image.Height), }; Rectangle rect = new Rectangle(0, 0, image.Width, image.Height); Bitmap bm = new Bitmap(image.Width, image.Height); using (Graphics gr = Graphics.FromImage(bm)) { gr.DrawImage(image, points, rect, GraphicsUnit.Pixel, attributes); } return bm; } public static Bitmap AdjustGamma(Image image, float gamma) { ImageAttributes attributes = new ImageAttributes(); attributes.SetGamma(gamma); Point[] points = { new Point(0, 0), new Point(image.Width, 0), new Point(0, image.Height), }; Rectangle rect = new Rectangle(0, 0, image.Width, image.Height); Bitmap bm = new Bitmap(image.Width, image.Height); using (Graphics gr = Graphics.FromImage(bm)) { gr.DrawImage(image, points, rect, GraphicsUnit.Pixel, attributes); } return bm; } public static byte[] ImageToByte(Bitmap bitmap) { BitmapData bmpdata = null; try { bmpdata = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, bitmap.PixelFormat); int numbytes = bmpdata.Stride * bitmap.Height; byte[] bytedata = new byte[numbytes]; IntPtr ptr = bmpdata.Scan0; Marshal.Copy(ptr, bytedata, 0, numbytes); return bytedata; } finally { if (bmpdata != null) bitmap.UnlockBits(bmpdata); } } } }