Toasts – Rev 2

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// =====COPYRIGHT=====
// Code originally retrieved from http://www.vbforums.com/showthread.php?t=547778 - no license information supplied
// =====COPYRIGHT=====

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

namespace Toasts
{
    public partial class ToastForm : Form
    {
        #region Static Fields and Constants

        private static readonly List<ToastForm> OpenNotifications = new List<ToastForm>();

        #endregion

        #region Public Methods

        /// <summary>
        ///     Displays the form
        /// </summary>
        /// <remarks>
        ///     Required to allow the form to determine the current foreground window before being displayed
        /// </remarks>
        public new void Show()
        {
            // Determine the current foreground window so it can be reactivated each time this form tries to get the focus
            _currentForegroundWindow = NativeMethods.GetForegroundWindow();

            base.Show();
        }

        #endregion

        #region Constructors, Destructors and Finalizers

        /// <summary>
        /// </summary>
        /// <param name="title"></param>
        /// <param name="body"></param>
        /// <param name="duration"></param>
        /// <param name="image"></param>
        /// <param name="animation"></param>
        /// <param name="direction"></param>
        public ToastForm(string title, string body, int duration, Image logo, Image background,
            FormAnimator.AnimationMethod animation, FormAnimator.AnimationDirection direction)
        {
            InitializeComponent();

            lifeTimer.Interval = duration;
            labelTitle.Text = title;
            labelBody.Text = body;
            imageBox.Image = logo;
            BackgroundImage = background;

            _animator = new FormAnimator(this, animation, direction, 500);

            Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
        }

        public ToastForm(string title, string body, int duration, Image logo,
            FormAnimator.AnimationMethod animation, FormAnimator.AnimationDirection direction)
        {
            InitializeComponent();

            lifeTimer.Interval = duration;
            labelTitle.Text = title;
            labelBody.Text = body;
            imageBox.Image = logo;

            _animator = new FormAnimator(this, animation, direction, 500);

            Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
        }

        public ToastForm(string title, string body, int duration, Image logo)
        {
            InitializeComponent();

            lifeTimer.Interval = duration;
            labelTitle.Text = title;
            labelBody.Text = body;
            imageBox.Image = logo;

            _animator = new FormAnimator(this, FormAnimator.AnimationMethod.Slide, FormAnimator.AnimationDirection.Up,
                500);

            Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
        }

        #endregion

        #region Private Delegates, Events, Enums, Properties, Indexers and Fields

        private readonly FormAnimator _animator;

        private bool _allowFocus;

        private IntPtr _currentForegroundWindow;

        #endregion

        #region Event Handlers

        private void Notification_Load(object sender, EventArgs e)
        {
            // Display the form just above the system tray.
            Location = new Point(Screen.PrimaryScreen.WorkingArea.Width - Width,
                Screen.PrimaryScreen.WorkingArea.Height - Height);

            // Move each open form upwards to make room for this one
            foreach (var openForm in OpenNotifications) openForm.Top -= Height;

            OpenNotifications.Add(this);
            lifeTimer.Start();
        }

        private void Notification_Activated(object sender, EventArgs e)
        {
            // Prevent the form taking focus when it is initially shown
            if (!_allowFocus)
                // Activate the window that previously had focus
                NativeMethods.SetForegroundWindow(_currentForegroundWindow);
        }

        private void Notification_Shown(object sender, EventArgs e)
        {
            // Once the animation has completed the form can receive focus
            _allowFocus = true;

            // Close the form by sliding down.
            _animator.Duration = 0;
            _animator.Direction = FormAnimator.AnimationDirection.Down;
        }

        private void Notification_FormClosed(object sender, FormClosedEventArgs e)
        {
            // Move down any open forms above this one
            foreach (var openForm in OpenNotifications)
            {
                if (openForm == this)
                    // Remaining forms are below this one
                    break;

                openForm.Top += Height;
            }

            OpenNotifications.Remove(this);
        }

        private void LifeTimer_Tick(object sender, EventArgs e)
        {
            Close();
        }

        private void Notification_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void LabelTitle_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void LabelRO_Click(object sender, EventArgs e)
        {
            Close();
        }

        #endregion
    }
}

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