public void Present()
{
_bitmap.LockPixels();
IntPtr length;
var pixels = _bitmap.GetPixels(out length);
#if __IOS__
const int bitmapInfo = ((int)CGBitmapFlags.ByteOrder32Big) | ((int)CGImageAlphaInfo.PremultipliedLast);
var bounds = GetApplicationFrame();
var statusBarOffset = UIScreen.MainScreen.Bounds.Height - bounds.Height;
using (var colorSpace = CGColorSpace.CreateDeviceRGB())
using (var bContext = new CGBitmapContext(pixels, _bitmap.Width, _bitmap.Height, 8, _bitmap.Width * 4, colorSpace, (CGImageAlphaInfo)bitmapInfo))
using (var image = bContext.ToImage())
using (var context = UIGraphics.GetCurrentContext())
{
// flip the image for CGContext.DrawImage
context.TranslateCTM(0, bounds.Height + statusBarOffset);
context.ScaleCTM(1, -1);
context.DrawImage(bounds, image);
}
#elif WIN32
UnmanagedMethods.BITMAPINFO bmi = new UnmanagedMethods.BITMAPINFO();
bmi.biSize = UnmanagedMethods.SizeOf_BITMAPINFOHEADER;
bmi.biWidth = _bitmap.Width;
bmi.biHeight = -_bitmap.Height; // top-down image
bmi.biPlanes = 1;
bmi.biBitCount = 32;
bmi.biCompression = (uint)UnmanagedMethods.BitmapCompressionMode.BI_RGB;
bmi.biSizeImage = 0;
IntPtr hdc = UnmanagedMethods.GetDC(_hwnd);
int ret = UnmanagedMethods.SetDIBitsToDevice(hdc,
0, 0,
(uint)_bitmap.Width, (uint)_bitmap.Height,
0, 0,
0, (uint)_bitmap.Height,
pixels,
ref bmi,
(uint)UnmanagedMethods.DIBColorTable.DIB_RGB_COLORS);
UnmanagedMethods.ReleaseDC(_hwnd, hdc);
#endif
_bitmap.UnlockPixels();
}
public void Present()
{
_bitmap.LockPixels();
IntPtr length;
var pixels = _bitmap.GetPixels(out length);
#if WIN32
UnmanagedMethods.BITMAPINFO bmi = new UnmanagedMethods.BITMAPINFO();
bmi.biSize = UnmanagedMethods.SizeOf_BITMAPINFOHEADER;
bmi.biWidth = _bitmap.Width;
bmi.biHeight = -_bitmap.Height; // top-down image
bmi.biPlanes = 1;
bmi.biBitCount = 32;
bmi.biCompression = (uint)UnmanagedMethods.BitmapCompressionMode.BI_RGB;
bmi.biSizeImage = 0;
IntPtr hdc = UnmanagedMethods.GetDC(_hwnd.Handle);
int ret = UnmanagedMethods.SetDIBitsToDevice(hdc,
0, 0,
(uint)_bitmap.Width, (uint)_bitmap.Height,
0, 0,
0, (uint)_bitmap.Height,
pixels,
ref bmi,
(uint)UnmanagedMethods.DIBColorTable.DIB_RGB_COLORS);
UnmanagedMethods.ReleaseDC(_hwnd.Handle, hdc);
#else
throw new NotImplementedException();
#endif
_bitmap.UnlockPixels();
}
