| using System.Drawing; |
| using System.Drawing.Imaging; |
| using System.IO; |
| using System.Windows; |
| using System.Windows.Media; |
| using System.Windows.Media.Imaging; |
| using ScreenGrab.Utilities; |
| using PixelFormat = System.Drawing.Imaging.PixelFormat; |
|
|
| namespace ScreenGrab.Extensions; |
|
|
| public static class ImageExtensions |
| { |
| public static ImageSource? GetWindowBoundsImage(this Window passedWindow) |
| { |
| var bmp = passedWindow.GetWindowsBoundsBitmap(); |
| return bmp.ToImageSource(); |
| } |
|
|
| public static Tuple<double, double> GetWidthHeight(this Window window) |
| { |
| var dpi = VisualTreeHelper.GetDpi(window); |
| return new Tuple<double, double>(window.ActualWidth * dpi.DpiScaleX, window.ActualHeight * dpi.DpiScaleY); |
| } |
|
|
| public static Bitmap GetWindowsBoundsBitmap(this Window passedWindow) |
| { |
| var (windowWidth, windowHeight) = passedWindow.GetWidthHeight(); |
|
|
| var absPosPoint = passedWindow.GetAbsolutePosition(); |
|
|
| var thisCorrectedLeft = (int)absPosPoint.X; |
| var thisCorrectedTop = (int)absPosPoint.Y; |
|
|
| Bitmap bmp = new((int)windowWidth, (int)windowHeight, PixelFormat.Format32bppArgb); |
| using var g = Graphics.FromImage(bmp); |
|
|
| g.CopyFromScreen(thisCorrectedLeft, thisCorrectedTop, 0, 0, bmp.Size, CopyPixelOperation.SourceCopy); |
| return bmp; |
| } |
|
|
| public static BitmapImage? ToImageSource(this Bitmap? bitmap) |
| { |
| if (bitmap == null) return default; |
| using MemoryStream memory = new(); |
| using WrappingStream wrapper = new(memory); |
|
|
| bitmap.Save(wrapper, ImageFormat.Bmp); |
| wrapper.Position = 0; |
| BitmapImage bitmapImage = new(); |
| bitmapImage.BeginInit(); |
| bitmapImage.StreamSource = wrapper; |
| bitmapImage.CacheOption = BitmapCacheOption.OnLoad; |
| bitmapImage.EndInit(); |
| bitmapImage.StreamSource = null; |
| bitmapImage.Freeze(); |
|
|
| memory.Flush(); |
| wrapper.Flush(); |
|
|
| return bitmapImage; |
| } |
|
|
| public static Bitmap GetRegionOfScreenAsBitmap(this Rectangle region) |
| { |
| if (region.Width <= 1 || region.Height <= 1) |
| { |
| return null; |
| } |
|
|
| Bitmap bmp = new(region.Width, region.Height, PixelFormat.Format32bppArgb); |
| using var g = Graphics.FromImage(bmp); |
|
|
| g.CopyFromScreen(region.Left, region.Top, 0, 0, bmp.Size, CopyPixelOperation.SourceCopy); |
| bmp = bmp.PadImage(); |
|
|
| return bmp; |
| } |
|
|
| public static Bitmap PadImage(this Bitmap image, int minW = 64, int minH = 64) |
| { |
| if (image.Height >= minH && image.Width >= minW) |
| return image; |
|
|
| var width = Math.Max(image.Width + 16, minW + 16); |
| var height = Math.Max(image.Height + 16, minH + 16); |
|
|
| |
| Bitmap destination = new(width, height, image.PixelFormat); |
| using var gd = Graphics.FromImage(destination); |
|
|
| gd.Clear(image.GetPixel(0, 0)); |
| gd.DrawImageUnscaled(image, 8, 8); |
|
|
| return destination; |
| } |
| } |
