//
// GtkCustomRenderer.cs
//
// Author:
//       Vsevolod Kukol <v.kukol@rubologic.de>
//
// Copyright (c) 2014 Vsevolod Kukol
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using Gtk;

namespace Xwt.GtkBackend
{
	public abstract class GtkCellRendererCustom : CellRenderer
	{
		protected override void Render (Gdk.Drawable window, Gtk.Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, CellRendererState flags)
		{
			using (var cr = Gdk.CairoHelper.Create (window)) {
				cr.Rectangle (background_area.X, background_area.Y, background_area.Width, background_area.Height);
				cr.Clip ();
				OnRender (cr, widget, background_area, cell_area, flags);
			}
		}

		protected abstract void OnRender (Cairo.Context cr, Gtk.Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, CellRendererState flags);


		public override void GetSize (Gtk.Widget widget, ref Gdk.Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height)
		{
			OnGetSize (widget, ref cell_area, out x_offset, out y_offset, out width, out height);
		}

		protected abstract void OnGetSize (Gtk.Widget widget, ref Gdk.Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height);
	}
}