using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D; // gradient
using System.Reflection;        // to get attributes from AssemblyInfo

namespace Standard
{
    public partial class AboutForm : System.Windows.Forms.Form
    {

        public AboutForm()
        {
            InitializeComponent();
        }
        
        private void AboutForm_Load(object sender, System.EventArgs e)
        {
            string stringMe = "AboutForm_Load: ";
            try
            {
                this.Icon = new Icon(this.GetType(), "application.ico");
                this.BackColor = Model.BackgroundColor;
                if (Model.Background == Model.BgType.Image)
                    fixImage();
                else
                    this.Invalidate();

                this.CenterToParent();
                this.Text = "About " + Application.ProductName +
                            " " + Model.VersionShort;
           
                this.pictureBox1.Image = Owner.Icon.ToBitmap();

                string tmpstr = Description() +
                    "\n\r\n\r" + "Version " + Application.ProductVersion +
                    "\n\r\n\r" + Company() +
                    "\n\r\n\r" + Copyright();

               this.label1.Text = tmpstr;
            }
            catch (Exception ex)
            { throw new Exception(stringMe + ex.Message); }
        } // end AboutForm_Load


        private void fixImage()
        {
            this.BackgroundImage =
                    new Bitmap(this.GetType(), "background.jpg");
            this.Invalidate();
        }


        /// <summary>
        /// uses reflection to obtain the Description attribute from AssemblyInfo
        /// </summary>
        private string Description()
        {
            string stringMe = "AboutForm.Description: ";
            try
            {
                AssemblyDescriptionAttribute myAttr = 
                    (AssemblyDescriptionAttribute) AssemblyDescriptionAttribute.GetCustomAttribute
                    (System.Reflection.Assembly.GetExecutingAssembly(), typeof
                    (AssemblyDescriptionAttribute));
                return myAttr.Description;
            }
            catch (Exception ex)
            { throw new Exception(stringMe + ex.Message); }
        }


        /// <summary>
        /// uses reflection to obtain the Company attribute from AssemblyInfo
        /// </summary>
        private string Company()
        {
            string stringMe = "AboutForm.Company: ";
            try
            {
                AssemblyCompanyAttribute myAttr = 
                    (AssemblyCompanyAttribute) AssemblyCompanyAttribute.GetCustomAttribute
                    (System.Reflection.Assembly.GetExecutingAssembly(), typeof
                    (AssemblyCompanyAttribute));
                return myAttr.Company;
            }
            catch (Exception ex)
            { throw new Exception(stringMe + ex.Message); }
        }


        /// <summary>
        /// uses reflection to obtain the Copyright attribute from AssemblyInfo
        /// </summary>
        private string Copyright()
        {
            string stringMe = "AboutForm.Copyright: ";
            try
            {
                AssemblyCopyrightAttribute myAttr = 
                    (AssemblyCopyrightAttribute) AssemblyCopyrightAttribute.GetCustomAttribute
                    (System.Reflection.Assembly.GetExecutingAssembly(), typeof
                    (AssemblyCopyrightAttribute));
                return myAttr.Copyright;
            }
            catch (Exception ex)
            { throw new Exception(stringMe + ex.Message); }
        }


        private void buttonClose_Click(object sender, System.EventArgs e)
        {
            string stringMe = "AboutForm.buttonClose_Click: ";
            try
            {
                this.Close();    
            }
            catch (Exception ex)
            { throw new Exception(stringMe + ex.Message); }
        }


        protected override void OnPaintBackground(System.Windows.Forms.PaintEventArgs pevent)
        {
            string stringMe = "MainForm.OnPaintBackground: ";
            try
            {
                if (Model.Background == Model.BgType.Gradient)
                {
                    Graphics gc = pevent.Graphics;
                    // paint from upper-left corner (0,0) to lower-right
                    LinearGradientBrush linGrBrush = new LinearGradientBrush(new Point(0,0),
                        new Point(this.Width, this.Height),
                        Model.GradientColor1,Model.GradientColor2);
                    gc.FillRectangle(linGrBrush, pevent.ClipRectangle);
                }
                else
                {
                    base.OnPaintBackground(pevent);
                }
            }
            catch (Exception ex)
            { throw new Exception(stringMe + ex.Message); }
        }


    } // end class
} // end namespace