WinFormsPopupAlerts/CustomTooltipAlertRenderer.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.ComponentModel;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace WinFormsPopupAlerts
{
    /// <summary>
    /// 
    /// </summary>
    [ToolboxBitmapAttribute(typeof(CustomTooltipAlertRenderer))]
    public class CustomTooltipAlertRenderer : TooltipAlertRenderer
    {
        private Color backColor;
        private Color titleForeColor;
        private Color foreColor;
        private Color borderColor;
        private Font font;
        private Font titleFont;
        private CornerRadius cornerRadius;
        private Brush backBrush;
        private Brush titleForeBrush;
        private Brush foreBrush;
        private Pen borderPen;
        private int borderThickness = 1;

        public CustomTooltipAlertRenderer()
        {
            BackColor = Color.Gray;
            TitleForeColor = Color.White;
            ForeColor = Color.White;
            BorderColor = Color.Black;
            TitleFont = new Font(SystemFonts.DefaultFont, FontStyle.Bold);
            Font = SystemFonts.DefaultFont;
            CornerRadius = new CornerRadius(15, 0, 0, 15);
        }

        protected override void Draw(System.Drawing.Graphics dc, string title, string text, Rectangle rect, Rectangle titleRect, Rectangle bodyRect, Image img, int iconWidth)
        {
            Rectangle borderRect = new Rectangle(rect.X + borderThickness / 2, rect.Y + borderThickness / 2, rect.Width - borderThickness, rect.Height - borderThickness);
            dc.FillPath(backBrush, GetCapsule(borderRect, CornerRadius));
            dc.DrawPath(borderPen, GetCapsule(borderRect, CornerRadius));
            StringFormat format = new StringFormat(StringFormatFlags.NoWrap);
            format.Trimming = StringTrimming.EllipsisCharacter;
            dc.DrawString(title, titleFont, titleForeBrush,
                new RectangleF(Padding.Left + iconWidth, Padding.Top, Math.Min(titleRect.Width, bodyRect.Width), titleRect.Height), format);
            dc.DrawString(text, font, foreBrush,
                new RectangleF(Padding.Left + iconWidth, Padding.Top + titleRect.Height, bodyRect.Width, bodyRect.Height),
                new StringFormat());
        }

        protected override Rectangle GetBodyTextRect(System.Drawing.Graphics dc, string text, Rectangle rect)
        {
            SizeF size = dc.MeasureString(text, font, rect.Size.Width,
                new StringFormat());
            return new Rectangle(new Point(0, 0), Size.Ceiling(size));
        }