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111 lines
3.8 KiB
C#
111 lines
3.8 KiB
C#
// Graphics.cs - System.Drawing integration with Gtk#
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//
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// Author: Miguel de Icaza <miguel@novell.com>
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//
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// Copyright (c) 2004 Novell, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the Lesser GNU General
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// Public License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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// API issues:
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// Maybe make the translation `out' parameters so they are explicit and the user knows about it?
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// Add a way to copy a Graphics into a drawable?
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//
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using System;
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using System.Reflection;
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using System.Runtime.InteropServices;
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namespace Gtk.DotNet {
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public class Graphics {
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private const string GdkNativeDll = "libgdk-3-0.dll";
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private Graphics () {}
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[DllImport (GdkNativeDll, CallingConvention = CallingConvention.Cdecl)]
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internal static extern IntPtr gdk_win32_drawable_get_handle(IntPtr raw);
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[DllImport (GdkNativeDll, CallingConvention = CallingConvention.Cdecl)]
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internal static extern IntPtr gdk_win32_hdc_get(IntPtr drawable, IntPtr gc, int usage);
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[DllImport (GdkNativeDll, CallingConvention = CallingConvention.Cdecl)]
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internal static extern void gdk_win32_hdc_release(IntPtr drawable,IntPtr gc,int usage);
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[DllImport (GdkNativeDll, CallingConvention = CallingConvention.Cdecl)]
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internal static extern IntPtr gdk_x11_drawable_get_xdisplay (IntPtr raw);
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[DllImport (GdkNativeDll, CallingConvention = CallingConvention.Cdecl)]
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internal static extern IntPtr gdk_x11_drawable_get_xid (IntPtr raw);
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public static System.Drawing.Graphics FromDrawable (Gdk.Window drawable)
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{
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return FromDrawable (drawable, true);
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}
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public static System.Drawing.Graphics FromDrawable(Gdk.Window drawable, bool double_buffered)
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{
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#if FIXME30
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IntPtr x_drawable;
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int x_off = 0, y_off = 0;
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PlatformID osversion = Environment.OSVersion.Platform;
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if (osversion == PlatformID.Win32Windows || osversion == PlatformID.Win32NT ||
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osversion == PlatformID.Win32S || osversion == PlatformID.WinCE){
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if (drawable is Gdk.Window && double_buffered)
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((Gdk.Window)drawable).GetInternalPaintInfo(out drawable, out x_off, out y_off);
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Cairo.Context gcc = new Gdk.GC(drawable);
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IntPtr windc = gdk_win32_hdc_get(drawable.Handle, gcc.Handle, 0);
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System.Drawing.Graphics g = System.Drawing.Graphics.FromHdc(windc);
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if (double_buffered) {
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gdk_win32_hdc_release(drawable.Handle, gcc.Handle, 0);
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}
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g.TranslateTransform(-x_off, -y_off);
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return g;
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} else {
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if (drawable is Gdk.Window && double_buffered)
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((Gdk.Window) drawable).GetInternalPaintInfo(out drawable, out x_off, out y_off);
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x_drawable = drawable.Handle;
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IntPtr display = gdk_x11_drawable_get_xdisplay (x_drawable);
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Type graphics = typeof (System.Drawing.Graphics);
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MethodInfo mi = graphics.GetMethod ("FromXDrawable", BindingFlags.Static | BindingFlags.NonPublic);
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if (mi == null)
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throw new NotImplementedException ("In this implementation I can not get a graphics from a drawable");
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object [] args = new object [2] { (IntPtr) gdk_x11_drawable_get_xid (drawable.Handle), (IntPtr) display };
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object r = mi.Invoke (null, args);
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System.Drawing.Graphics g = (System.Drawing.Graphics) r;
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g.TranslateTransform (-x_off, -y_off);
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return g;
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}
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#else
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throw new NotSupportedException ();
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#endif
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}
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}
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}
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