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//
// System.Drawing integration with Gtk#
//
// Miguel de Icaza
//
// API issues:
// Maybe make the translation `out' parameters so they are explicit and the user knows about it?
// Add a way to copy a Graphics into a drawable?
//
using System;
using System.Reflection;
using System.Runtime.InteropServices;
namespace Gdk {
public class Graphics {
[DllImport("libgdk-win32-2.0-0.dll")]
internal static extern IntPtr gdk_x11_drawable_get_xdisplay (IntPtr raw);
[DllImport("libgdk-win32-2.0-0.dll")]
internal static extern IntPtr gdk_x11_drawable_get_xid (IntPtr raw);
public static System.Drawing.Graphics FromDrawable (Gdk.Drawable drawable)
{
IntPtr x_drawable;
int x_off = 0, y_off = 0;
if (drawable is Gdk.Window){
((Gdk.Window) drawable).GetInternalPaintInfo(out drawable, out x_off, out y_off);
}
x_drawable = drawable.Handle;
IntPtr display = gdk_x11_drawable_get_xdisplay (x_drawable);
Type graphics = typeof (System.Drawing.Graphics);
MethodInfo mi = graphics.GetMethod ("FromXDrawable", BindingFlags.Static | BindingFlags.NonPublic);
if (mi == null)
throw new NotImplementedException ("In this implementation I can not get a graphics from a drawable");
object [] args = new object [2] { (IntPtr) gdk_x11_drawable_get_xid (drawable.Handle), (IntPtr) display };
object r = mi.Invoke (null, args);
System.Drawing.Graphics g = (System.Drawing.Graphics) r;
g.TranslateTransform (-x_off, -y_off);
return g;
}
}
}
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