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// Graphics.cs - System.Drawing integration with Gtk#
//
// Author: Miguel de Icaza <miguel@novell.com>
//
// Copyright (c) 2004 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
// 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 Gtk.DotNet {
public class Graphics {
private Graphics () {}
[DllImport ("libgdk-win32-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr gdk_win32_drawable_get_handle(IntPtr raw);
[DllImport ("libgdk-win32-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr gdk_win32_hdc_get(IntPtr drawable, IntPtr gc, int usage);
[DllImport ("libgdk-win32-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
internal static extern void gdk_win32_hdc_release(IntPtr drawable,IntPtr gc,int usage);
[DllImport ("libgdk-win32-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr gdk_x11_drawable_get_xdisplay (IntPtr raw);
[DllImport ("libgdk-win32-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr gdk_x11_drawable_get_xid (IntPtr raw);
public static System.Drawing.Graphics FromDrawable (Gdk.Window drawable)
{
return FromDrawable (drawable, true);
}
public static System.Drawing.Graphics FromDrawable(Gdk.Window drawable, bool double_buffered)
{
#if FIXME30
IntPtr x_drawable;
int x_off = 0, y_off = 0;
PlatformID osversion = Environment.OSVersion.Platform;
if (osversion == PlatformID.Win32Windows || osversion == PlatformID.Win32NT ||
osversion == PlatformID.Win32S || osversion == PlatformID.WinCE){
if (drawable is Gdk.Window && double_buffered)
((Gdk.Window)drawable).GetInternalPaintInfo(out drawable, out x_off, out y_off);
Cairo.Context gcc = new Gdk.GC(drawable);
IntPtr windc = gdk_win32_hdc_get(drawable.Handle, gcc.Handle, 0);
System.Drawing.Graphics g = System.Drawing.Graphics.FromHdc(windc);
if (double_buffered) {
gdk_win32_hdc_release(drawable.Handle, gcc.Handle, 0);
}
g.TranslateTransform(-x_off, -y_off);
return g;
} else {
if (drawable is Gdk.Window && double_buffered)
((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;
}
#else
throw new NotSupportedException ();
#endif
}
}
}
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