using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Windows.Forms;

namespace RibbonStyle {
    
    /// <summary>
    /// Handy layout helper utils.
    /// </summary>
    static class LayoutUtils {
        /// <summary>
        /// Increases the size of the rectangle by the padding
        /// </summary>
        /// <param name="rect"></param>
        /// <param name="padding"></param>
        /// <returns></returns>
        public static Rectangle InflateRect(Rectangle rect, Padding padding) {
            rect.X -= padding.Left;
            rect.Y -= padding.Top;
            rect.Width += padding.Horizontal;
            rect.Height += padding.Vertical;
            return rect;
        }


        /// <summary>
        /// Decreases the rectangle by the amount of padding
        /// </summary>
        /// <param name="rect"></param>
        /// <param name="padding"></param>
        /// <returns></returns>
        public static Rectangle DeflateRect(Rectangle rect, Padding padding) {
            rect.X += padding.Left;
            rect.Y += padding.Top;
            rect.Width -= padding.Horizontal;
            rect.Height -= padding.Vertical;
            return rect;
        }


        /// <summary>
        /// Given two sizes, returns the maximum width and maximum height
        /// </summary>
        /// <param name="a"></param>
        /// <param name="b"></param>
        /// <returns></returns>
        public static Size UnionSizes(Size a, Size b) {
            return new Size(
                Math.Max(a.Width, b.Width),
                Math.Max(a.Height, b.Height));
        }
    }
}