// Created with MonoDevelop
//
//    QuickStep: Acquire, view and identify spectra 
//    Copyright (C) 2018 Thomas Klose & Torsten Schache, Hiperscan GmbH Dresden, Germany
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    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 General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program.  If not, see <http://www.gnu.org/licenses/>.


using System;
using Gtk;
using Cairo;
using Gdk;

namespace Hiperscan.Extensions.ApoIdent
{
    public class CellRendererInfo : CellRendererToggle
    {
        private static ImageSurface InfoImage  {get; set;}

        public static void Init()
        {
            string tmp_file = System.IO.Path.GetTempFileName();


            Pixbuf tmp_pixbuf = new Gtk.Image().RenderIcon(Stock.Info, IconSize.Menu, String.Empty);
            tmp_pixbuf.Save(tmp_file, "png");
            CellRendererInfo.InfoImage = new ImageSurface(tmp_file);
        }

        protected override void Render (Gdk.Drawable window, Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, CellRendererState flags)
        {
            if (this.Active == true)
            {
                Cairo.Context context = Gdk.CairoHelper.Create(window);

                context.SetSource(CellRendererInfo.InfoImage, cell_area.X, cell_area.Y + 3);
                context.Paint();
                (context.GetTarget() as System.IDisposable).Dispose();
                (context as IDisposable).Dispose();
            }
        }
    }
}
