public static extern bool BitBlt(IntPtr hdc, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, System.Drawing.CopyPixelOperation dwRop);
public static extern bool BitBlt(IntPtr hdcDest, int xDest, int yDest, int wDest, int hDest, IntPtr hdcSource, int xSrc, int ySrc, System.Drawing.CopyPixelOperation rop);
public static System.Drawing.Bitmap CopyFromScreenX11(int sourceX, int sourceY,
System.Drawing.Size blockRegionSize
, System.Drawing.CopyPixelOperation copyPixelOperation)
{
System.UIntPtr window;
System.IntPtr image, defvisual, vPtr;
int AllPlanes = ~0, nitems = 0, pixel;
System.UIntPtr AllPlanes2 = new System.UIntPtr((uint)AllPlanes);
if (copyPixelOperation != System.Drawing.CopyPixelOperation.SourceCopy)
{
throw new System.NotImplementedException("Operation not implemented under X11");
}
if (Gdip.Display == System.IntPtr.Zero)
{
Gdip.Display = LibX11Functions.XOpenDisplay(System.IntPtr.Zero);
}
window = LibX11Functions.XRootWindow(Gdip.Display, 0);
defvisual = LibX11Functions.XDefaultVisual(Gdip.Display, 0);
XVisualInfo visual = new XVisualInfo();
// Get XVisualInfo for this visual
visual.visualid = LibX11Functions.XVisualIDFromVisual(defvisual);
vPtr = LibX11Functions.XGetVisualInfo(Gdip.Display, VisualIDMask, ref visual, ref nitems);
visual = (XVisualInfo)System.Runtime.InteropServices.Marshal.PtrToStructure(vPtr, typeof(XVisualInfo));
image = LibX11Functions.XGetImage(Gdip.Display, window, sourceX, sourceY, (uint)blockRegionSize.Width,
(uint)blockRegionSize.Height, AllPlanes2, ZPixmap);
if (image == System.IntPtr.Zero)
{
string s = string.Format("XGetImage returned NULL when asked to for a {0}x{1} region block",
blockRegionSize.Width, blockRegionSize.Height);
throw new System.InvalidOperationException(s);
}
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(blockRegionSize.Width, blockRegionSize.Height);
int red, blue, green;
int red_mask = (int)visual.red_mask;
int blue_mask = (int)visual.blue_mask;
int green_mask = (int)visual.green_mask;
for (int y = 0; y < blockRegionSize.Height; y++)
{
for (int x = 0; x < blockRegionSize.Width; x++)
{
pixel = LibX11Functions.XGetPixel(image, x, y);
switch (visual.depth)
{
case 16: /* 16bbp pixel transformation */
red = (int)((pixel & red_mask) >> 8) & 0xff;
green = (int)(((pixel & green_mask) >> 3)) & 0xff;
blue = (int)((pixel & blue_mask) << 3) & 0xff;
break;
case 24:
case 32:
// int a = (int)((pixel ) >> 24) & 0xff;
red = (int)((pixel & red_mask) >> 16) & 0xff;
green = (int)(((pixel & green_mask) >> 8)) & 0xff;
blue = (int)((pixel & blue_mask)) & 0xff;
break;
default:
string text = string.Format("{0}bbp depth not supported.", visual.depth);
throw new System.NotImplementedException(text);
}
bmp.SetPixel(x, y, System.Drawing.Color.FromArgb(255, red, green, blue));
}
}
// DrawImage(bmp, destinationX, destinationY);
// bmp.Dispose();
LibX11Functions.XDestroyImage(image);
LibX11Functions.XFree(vPtr);
return(bmp);
}
