108 lines
5.2 KiB
C#
108 lines
5.2 KiB
C#
//
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// CellRenderer.cs - Gtk CellRenderer class customizations
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//
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// Author: Todd Berman <tberman@sevenl.net>,
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// Peter Johanson <peter@peterjohanson.com>
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//
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// Copyright (C) 2004 Todd Berman
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// Copyright (C) 2007 Peter Johanson
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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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namespace Gtk {
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using System;
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using System.Runtime.InteropServices;
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public partial class CellRenderer {
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[DllImport ("libgtk-win32-3.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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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);
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public ICellEditable StartEditing (Widget widget, Gdk.Event evnt, string path, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, CellRendererState flags)
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{
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IntPtr native = GLib.Marshaller.StringToPtrGStrdup (path);
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IntPtr raw_ret = gtk_cell_renderer_start_editing (Handle, evnt != null ? evnt.Handle : IntPtr.Zero, widget.Handle, native, ref background_area, ref cell_area, (int) flags);
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GLib.Marshaller.Free (native);
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var ret = (ICellEditable) GLib.Object.GetObject (raw_ret);
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return ret;
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}
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[DllImport ("libgtk-win32-3.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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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);
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public void Render (Cairo.Context context, Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, CellRendererState flags)
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{
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gtk_cell_renderer_render (Handle, context == null ? IntPtr.Zero : context.Handle, widget == null ? IntPtr.Zero : widget.Handle, ref background_area, ref cell_area, ref expose_area, (int) flags);
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}
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// 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"
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// TODO: Implement "nullable" attribute for value type parameters in GAPI
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[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
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delegate void OnGetSizeDelegate (IntPtr item, IntPtr widget, IntPtr cell_area_ptr, IntPtr x_offset, IntPtr y_offset, IntPtr width, IntPtr height);
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static void OnGetSize_cb (IntPtr item, IntPtr widget, IntPtr cell_area_ptr, IntPtr x_offset, IntPtr y_offset, IntPtr width, IntPtr height)
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{
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try {
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CellRenderer obj = GLib.Object.GetObject (item, false) as CellRenderer;
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Gtk.Widget widg = GLib.Object.GetObject (widget, false) as Gtk.Widget;
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Gdk.Rectangle cell_area = Gdk.Rectangle.Zero;
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if (cell_area_ptr != IntPtr.Zero)
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cell_area = Gdk.Rectangle.New (cell_area_ptr);
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int a, b, c, d;
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obj.OnGetSize (widg, ref cell_area, out a, out b, out c, out d);
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if (x_offset != IntPtr.Zero)
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Marshal.WriteInt32 (x_offset, a);
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if (y_offset != IntPtr.Zero)
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Marshal.WriteInt32 (y_offset, b);
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if (width != IntPtr.Zero)
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Marshal.WriteInt32 (width, c);
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if (height != IntPtr.Zero)
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Marshal.WriteInt32 (height, d);
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} catch (Exception e) {
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GLib.ExceptionManager.RaiseUnhandledException (e, false);
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}
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}
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[DllImport("gtksharpglue-3")]
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static extern void gtksharp_cellrenderer_override_get_size (IntPtr gtype, OnGetSizeDelegate cb);
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static OnGetSizeDelegate OnGetSizeCallback;
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static void OverrideOnGetSize (GLib.GType gtype)
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{
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if (OnGetSizeCallback == null)
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OnGetSizeCallback = new OnGetSizeDelegate (OnGetSize_cb);
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gtksharp_cellrenderer_override_get_size (gtype.Val, OnGetSizeCallback);
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}
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[GLib.DefaultSignalHandler (Type=typeof(Gtk.CellRenderer), ConnectionMethod="OverrideOnGetSize")]
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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)
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{
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InternalOnGetSize (widget, ref cell_area, out x_offset, out y_offset, out width, out height);
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}
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[DllImport("gtksharpglue-3")]
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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);
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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)
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{
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IntPtr native_cell_area = GLib.Marshaller.StructureToPtrAlloc (cell_area);
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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);
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cell_area = Gdk.Rectangle.New (native_cell_area);
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Marshal.FreeHGlobal (native_cell_area);
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}
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}
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}
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