Source/AdvTree/Drawing/RectangleShape.cs

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using System;
using System.Text;
using System.Drawing;
using System.ComponentModel;
using DevComponents.AdvTree;
using System.Drawing.Drawing2D;
using DevComponents.DotNetBar;

namespace DevComponents.WinForms.Drawing
{
    internal class RectangleShape : Shape
    {
        #region Internal Implementation
        /// <summary>
        /// Renders rectangle on canvas.
        /// </summary>
        /// <param name="g">Target graphics to render shape on.</param>
        /// <param name="bounds">Shape bounds.</param>
        public override void Paint(Graphics g, Rectangle bounds)
        {
            if (bounds.Width < 2 || bounds.Height < 2 || g == null || _Fill == null && _Border == null) return;

            GraphicsPath path = null;
            
            if (!_CornerRadius.IsZero)
            {
                path = DisplayHelp.GetRoundedRectanglePath(bounds, _CornerRadius.TopLeft, _CornerRadius.TopRight, 
                    _CornerRadius.BottomRight, _CornerRadius.BottomLeft);
            }

            if (_Fill != null)
            {
                Brush brush = _Fill.CreateBrush(bounds);
                if (brush != null)
                {
                    if (path == null)
                        g.FillRectangle(brush, bounds);
                    else
                        g.FillPath(brush, path);
                    
                    brush.Dispose();
                }
            }

            if (_Border != null)
            {
                Pen pen = _Border.CreatePen();
                if (pen != null)
                {
                    if (path == null)
                        g.DrawRectangle(pen, bounds);
                    else
                        g.DrawPath(pen, path);

                    pen.Dispose();
                }
            }

            Shape content = this.Content;
            if (content != null)