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** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt VS Tools.
**
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** GNU General Public License Usage
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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using System.Drawing;
using System.Windows.Forms;

namespace QtProjectLib
{
    public class ImageButton : Button
    {
        private readonly Image img;
        private readonly Image dimg;

        // support for disabled image
        public ImageButton(Image image, Image dimage)
        {
            img = image;
            dimg = dimage;
        }

        public sealed override Color BackColor
        {
            get { return SystemColors.Control; }
        }

        protected override void OnPaint(PaintEventArgs pevent)
        {
            base.OnPaint(pevent);

            var xoffset = (Size.Width - img.Width) / 2;
            var yoffset = (Size.Height - img.Height) / 2;
            var imgWidth = img.Width;
            var imgHeight = img.Height;

            // make it smaller if necessary
            if (xoffset < 0)
                imgWidth = Size.Width;
            if (yoffset < 0)
                imgHeight = Size.Height;

            if ((dimg != null) && (!Enabled)) {
                pevent.Graphics.DrawImage(dimg, xoffset, yoffset,
                    imgWidth, imgHeight);
            } else if (img != null) {
                pevent.Graphics.DrawImage(img, xoffset, yoffset,
                    imgWidth, imgHeight);
            }
        }
    }
}