GtkSharp/gtk/CellRenderer.custom

//
// CellRenderer.custom - Gtk CellRenderer class customizations
//
// Author: Todd Berman <tberman@sevenl.net>,
//         Peter Johanson <peter@peterjohanson.com>
//
// Copyright (C) 2004 Todd Berman
// Copyright (C) 2007 Peter Johanson
//
// This code is inserted after the automatically generated code.
//
//
// 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.

		[DllImport ("libgtk-win32-2.0-0.dll")]
		static extern IntPtr gtk_cell_renderer_start_editing (IntPtr handle, IntPtr evnt, IntPtr widget, IntPtr path, ref Gdk.Rectangle bg_area, ref Gdk.Rectangle cell_area, int flags);

		public CellEditable StartEditing (Widget widget, Gdk.Event evnt, string path, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, CellRendererState flags)
		{
			IntPtr native = GLib.Marshaller.StringToPtrGStrdup (path);
			IntPtr raw_ret = gtk_cell_renderer_start_editing (Handle, evnt.Handle, widget.Handle, native, ref background_area, ref cell_area, (int) flags);
			GLib.Marshaller.Free (native);
			Gtk.CellEditable ret = (Gtk.CellEditable) GLib.Object.GetObject(raw_ret);
			return ret;
		}

		[DllImport("libgtk-win32-2.0-0.dll")]
		static extern void gtk_cell_renderer_render (IntPtr handle, IntPtr drawable, IntPtr widget, ref Gdk.Rectangle bg_area, ref Gdk.Rectangle cell_area, ref Gdk.Rectangle expose_area, int flags);
		
		public void Render (Widget widget, Gdk.Drawable window, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, CellRendererState flags)
		{
			gtk_cell_renderer_render (Handle, window == null ? IntPtr.Zero : window.Handle, widget == null ? IntPtr.Zero : widget.Handle, ref background_area, ref cell_area, ref expose_area, (int) flags);
		}

		// We have to implement this VM manually because x_offset, y_offset, width and height params may be NULL and therefore cannot be treated as "out int"
		// TODO: Implement "nullable" attribute for value type parameters in GAPI
		[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
		delegate void OnGetSizeDelegate (IntPtr item, IntPtr widget, IntPtr cell_area_ptr, IntPtr x_offset, IntPtr y_offset, IntPtr width, IntPtr height);
                
		static void OnGetSize_cb (IntPtr item, IntPtr widget, IntPtr cell_area_ptr, IntPtr x_offset, IntPtr y_offset, IntPtr width, IntPtr height)
		{
			try {
				CellRenderer obj = GLib.Object.GetObject (item, false) as CellRenderer;
				Gtk.Widget widg = GLib.Object.GetObject (widget, false) as Gtk.Widget;
				Gdk.Rectangle cell_area = Gdk.Rectangle.New (cell_area_ptr);
				int a, b, c, d;

				obj.OnGetSize (widg, ref cell_area, out a, out b, out c, out d);
				if (x_offset != IntPtr.Zero)
					Marshal.WriteInt32 (x_offset, a);
				if (y_offset != IntPtr.Zero)
					Marshal.WriteInt32 (y_offset, b);
				if (width != IntPtr.Zero)
					Marshal.WriteInt32 (width, c);
				if (height != IntPtr.Zero)
					Marshal.WriteInt32 (height, d);
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}
		}

		[DllImport("gtksharpglue-2")]
		static extern void gtksharp_cellrenderer_override_get_size (IntPtr gtype, OnGetSizeDelegate cb);

		static OnGetSizeDelegate OnGetSizeCallback;
		static void OverrideOnGetSize (GLib.GType gtype)
		{
			if (OnGetSizeCallback == null)
				OnGetSizeCallback = new OnGetSizeDelegate (OnGetSize_cb);
			gtksharp_cellrenderer_override_get_size (gtype.Val, OnGetSizeCallback);
		}
               
		[GLib.DefaultSignalHandler (Type=typeof(Gtk.CellRenderer), ConnectionMethod="OverrideOnGetSize")] 
		protected virtual void OnGetSize (Gtk.Widget widget, ref Gdk.Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height) 
		{
			InternalOnGetSize (widget, ref cell_area, out x_offset, out y_offset, out width, out height);
		}

		[DllImport("gtksharpglue-2")]
		static extern void gtksharp_cellrenderer_base_get_size (IntPtr cell, IntPtr widget, IntPtr cell_area, out int x_offset, out int y_offset, out int width, out int height);

		private void InternalOnGetSize (Gtk.Widget widget, ref Gdk.Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height) 
		{
			IntPtr native_cell_area = GLib.Marshaller.StructureToPtrAlloc (cell_area);
			gtksharp_cellrenderer_base_get_size (Handle, widget == null ? IntPtr.Zero : widget.Handle, native_cell_area, out x_offset, out y_offset, out width, out height);
			cell_area = Gdk.Rectangle.New (native_cell_area);
			Marshal.FreeHGlobal (native_cell_area);
		}

		// Compatibility code for old GetSize(..) virtual method
		static void ObsoleteGetSize_cb (IntPtr item, IntPtr widget, IntPtr cell_area_ptr, IntPtr x_offset, IntPtr y_offset, IntPtr width, IntPtr height)
		{
			try {
				CellRenderer obj = GLib.Object.GetObject (item, false) as CellRenderer;
				Gtk.Widget widg = GLib.Object.GetObject (widget, false) as Gtk.Widget;
				Gdk.Rectangle cell_area = Gdk.Rectangle.New (cell_area_ptr);
				int a, b, c, d;

				obj.GetSize (widg, ref cell_area, out a, out b, out c, out d);
				if (x_offset != IntPtr.Zero)
					Marshal.WriteInt32 (x_offset, a);
				if (y_offset != IntPtr.Zero)
					Marshal.WriteInt32 (y_offset, b);
				if (width != IntPtr.Zero)
					Marshal.WriteInt32 (width, c);
				if (height != IntPtr.Zero)
					Marshal.WriteInt32 (height, d);
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}
		}

		static void OverrideObsoleteGetSize (GLib.GType gtype)
		{
			if (OnGetSizeCallback == null)
				OnGetSizeCallback = new OnGetSizeDelegate (ObsoleteGetSize_cb);
			gtksharp_cellrenderer_override_get_size (gtype.Val, OnGetSizeCallback);
		}

		[Obsolete ("Replaced by OnGetSize for implementations and GetSize(..., out Gdk.Rectangle bounds) for callers.")]
		[GLib.DefaultSignalHandler(Type=typeof(Gtk.CellRenderer), ConnectionMethod="OverrideObsoleteGetSize")]
		public virtual void GetSize(Gtk.Widget widget, ref Gdk.Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height) 
		{
			InternalOnGetSize (widget, ref cell_area, out x_offset, out y_offset, out width, out height);
		}

		// Compatibility code for old Render(..) virtual method
		static void ObsoleteRender_cb (IntPtr cell, IntPtr window, IntPtr widget, IntPtr background_area, IntPtr cell_area, IntPtr expose_area, int flags)
		{
			try {
				Gtk.CellRenderer __obj = GLib.Object.GetObject (cell, false) as Gtk.CellRenderer;
				__obj.Render (GLib.Object.GetObject(window) as Gdk.Drawable, GLib.Object.GetObject(widget) as Gtk.Widget, Gdk.Rectangle.New (background_area), Gdk.Rectangle.New (cell_area), Gdk.Rectangle.New (expose_area), (Gtk.CellRendererState) flags);
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}
		}

		static RenderNativeDelegate ObsoleteRenderVMCallback;
		static void OverrideObsoleteRender (GLib.GType gtype)
		{
			if (ObsoleteRenderVMCallback == null)
				ObsoleteRenderVMCallback = new RenderNativeDelegate (ObsoleteRender_cb);
			OverrideRender (gtype, ObsoleteRenderVMCallback); // -> autogenerated method
		}

		[Obsolete ("Replaced by OnRender for subclass overrides and Render (Widget ...) for callers.")]
		[GLib.DefaultSignalHandler(Type=typeof(Gtk.CellRenderer), ConnectionMethod="OverrideObsoleteRender")]
		protected virtual void Render (Gdk.Drawable window, Gtk.Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, Gtk.CellRendererState flags)
		{
			InternalRender (window, widget, background_area, cell_area, expose_area, flags);
		}

		// Compatibility code for old StartEditing(..) virtual method
		static IntPtr ObsoleteStartEditing_cb (IntPtr cell, IntPtr evnt, IntPtr widget, IntPtr path, IntPtr background_area, IntPtr cell_area, int flags)
		{
			try {
				Gtk.CellRenderer __obj = GLib.Object.GetObject (cell, false) as Gtk.CellRenderer;
				Gtk.CellEditable __result = __obj.StartEditing (Gdk.Event.GetEvent (evnt), GLib.Object.GetObject(widget) as Gtk.Widget, GLib.Marshaller.Utf8PtrToString (path), Gdk.Rectangle.New (background_area), Gdk.Rectangle.New (cell_area), (Gtk.CellRendererState) flags);
				return __result == null ? IntPtr.Zero : __result.Handle;
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, true);
				// NOTREACHED: above call does not return.
				throw e;
			}
		}

		static StartEditingNativeDelegate ObsoleteStartEditingVMCallback;
		static void OverrideObsoleteStartEditing (GLib.GType gtype)
		{
			if (ObsoleteStartEditingVMCallback == null)
				ObsoleteStartEditingVMCallback = new StartEditingNativeDelegate (ObsoleteStartEditing_cb);
			OverrideStartEditing (gtype, ObsoleteStartEditingVMCallback);
		}

		[Obsolete ("Replaced by OnStartEditing for subclass overrides and StartEditing (Gtk.Widget ...) for callers.")]
		[GLib.DefaultSignalHandler(Type=typeof(Gtk.CellRenderer), ConnectionMethod="OverrideObsoleteStartEditing")]
		public virtual Gtk.CellEditable StartEditing(Gdk.Event evnt, Gtk.Widget widget, string path, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gtk.CellRendererState flags) {
			return InternalStartEditing (evnt, widget, path, background_area, cell_area, flags);
		}