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December 27, 2015 12:29
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Functions to manipulate images. Planning to add more in the future. (Update: added a function to put the split images back together)
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| using System; | |
| using System.Collections.Generic; | |
| using System.Drawing; | |
| using System.Drawing.Imaging; | |
| using System.IO; | |
| using System.Linq; | |
| using System.Windows.Forms; | |
| public static class ImageFunctions | |
| { | |
| public static byte[] TakeScreenshot(int monitorIndex) | |
| { | |
| Screen monitor = Screen.AllScreens[monitorIndex]; | |
| using (var bmp = new Bitmap(monitor.Bounds.Width, monitor.Bounds.Height)) | |
| { | |
| using (var g = Graphics.FromImage(bmp)) | |
| g.CopyFromScreen(monitor.Bounds.X, monitor.Bounds.Y, 0, 0, monitor.Bounds.Size); | |
| using (var ms = new MemoryStream()) | |
| { | |
| EncoderParameters myEncoderParameters = new EncoderParameters(); | |
| myEncoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 20L); | |
| bmp.Save(ms, GetEncoder(ImageFormat.Jpeg), myEncoderParameters); | |
| return ms.ToArray(); | |
| } | |
| } | |
| } | |
| private static ImageCodecInfo GetEncoder(ImageFormat format) | |
| { | |
| ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders(); | |
| foreach (ImageCodecInfo codec in codecs) | |
| { | |
| if (codec.FormatID == format.Guid) | |
| { | |
| return codec; | |
| } | |
| } | |
| return null; | |
| } | |
| public static Bitmap RetrieveImage(byte[] imageData) | |
| { | |
| using (var ms = new MemoryStream(imageData)) | |
| { | |
| return new Bitmap(ms); | |
| } | |
| } | |
| public static IEnumerable<Bitmap> SplitImage(Bitmap src, int amount) | |
| { | |
| int pieces = (int)Math.Sqrt(amount); | |
| var posY = src.Height / pieces; | |
| var posX = src.Width / pieces; | |
| for (var y = 0; y < pieces; y++) | |
| for (var x = 0; x < pieces; x++) | |
| yield return src.Clone(new Rectangle(x * posX, y * posY, posX, posY), src.PixelFormat); | |
| } | |
| public static Bitmap ArrangeImage(IEnumerable<Bitmap> images, int amount) | |
| { | |
| var pieces = (int)Math.Sqrt(amount); | |
| var height = images.First().Height; | |
| var width = images.First().Width; | |
| using (var image = new Bitmap(width * pieces, height * pieces)) | |
| { | |
| using (var g = Graphics.FromImage(image)) | |
| { | |
| int imageCount = 0; | |
| for (int y = 0; y < pieces; y++) | |
| for (int x = 0; x < pieces; x++) | |
| { | |
| g.DrawImage(images.ElementAt(imageCount), new Rectangle(x * width, y * height, width, height)); | |
| imageCount++; | |
| } | |
| } | |
| using (var ms = new MemoryStream()) | |
| { | |
| image.Save(ms, ImageFormat.Png); | |
| return new Bitmap(ms); | |
| } | |
| } | |
| } | |
| } |
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