public static int[] GetPixels(System.Windows.Media.Imaging.BitmapImage imageSource)
{
System.Windows.Media.Imaging.WriteableBitmap wbmp = new System.Windows.Media.Imaging.WriteableBitmap(imageSource);
int[] pixels = new int[wbmp.PixelWidth * wbmp.PixelHeight];
wbmp.CopyPixels(pixels, wbmp.PixelWidth * 4, 0);
return(pixels);
}
public static int[] GetPixels(System.Windows.Media.Imaging.BitmapImage imageSource)
{
System.Windows.Media.Imaging.WriteableBitmap wbmp = new System.Windows.Media.Imaging.WriteableBitmap(imageSource);
int[] pixels = new int[wbmp.PixelWidth * wbmp.PixelHeight];
wbmp.CopyPixels(pixels, wbmp.PixelWidth * 4, 0);
return pixels;
}
private static void SaveImageAsPngFile(System.Windows.Media.Imaging.WriteableBitmap bitmap, string fileName, IntPtr hwnd, System.Windows.Int32Rect clippingRect)
{
if (bitmap == null)
{
throw new ArgumentNullException("Invalid bitmap!!");
}
if (!User32DllMethodsInvoker.IsWindow(hwnd))
{
throw new ArgumentException("Invalid window!!");
}
// クライアント矩形やユーザー定義クリッピング矩形で切り出した内容のみを保存する。
var intersectRect = MyWin32InteropHelper.CalcClientIntersectRect(hwnd, clippingRect);
System.Diagnostics.Debug.Assert(intersectRect.HasArea);
var tempSubBitmap = new System.Windows.Media.Imaging.WriteableBitmap(intersectRect.Width, intersectRect.Height,
MyDeviceHelper.DefaultDpi, MyDeviceHelper.DefaultDpi, System.Windows.Media.PixelFormats.Pbgra32, null);
try
{
tempSubBitmap.Lock();
bitmap.CopyPixels(new System.Windows.Int32Rect(0, 0, intersectRect.Width, intersectRect.Height),
tempSubBitmap.BackBuffer,
tempSubBitmap.PixelWidth * tempSubBitmap.PixelHeight * 4,
tempSubBitmap.PixelWidth * 4);
}
catch (Exception)
{
throw;
}
finally
{
tempSubBitmap.Unlock();
}
using (var stream = new System.IO.FileStream(fileName,
System.IO.FileMode.Create, System.IO.FileAccess.Write))
{
var encoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
//encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(bitmap));
encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(tempSubBitmap));
encoder.Save(stream);
}
tempSubBitmap = null;
}
