notifywindow.cs

股票操作员每日一记 源程序 股票操作员每日一记 源程序

// NotifyWindow.cs
// Copyright ?2004 by Robert Misiak <[e-mail]>
// All Rights Reserved.
//
// Permission is granted to use, modify and distribute this code, as long as credit is given to the original author, and the copyright notice
// is retained.
//
// Based on a similar implementation used in ChronosXP, an open-source project:  http://chronosxp.sourceforge.net

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Reflection;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace stock_Log
{
	/// <summary>
	/// Display An MSN-Messenger-Style NotifyWindow.
	/// </summary>
	public class NotifyWindow : System.Windows.Forms.Form
	{
		#region Public Variables
		/// <summary>
		/// Gets or sets the title text to be displayed in the NotifyWindow.
		/// </summary>
		public string Title;
		/// <summary>
		/// Gets or sets the Font used for the title text.
		/// </summary>
		public System.Drawing.Font TitleFont;
		/// <summary>
		/// Gets or sets the Font used when the mouse hovers over the main body of text.
		/// </summary>
		public System.Drawing.Font HoverFont;
		/// <summary>
		/// Gets or sets the Font used when the mouse hovers over the title text.
		/// </summary>
		public System.Drawing.Font TitleHoverFont;
		/// <summary>
		/// Gets or sets the style used when drawing the background of the NotifyWindow.
		/// </summary>
		public BackgroundStyles BackgroundStyle;
		/// <summary>
		/// Gets or sets the Blend used when drawing a gradient background for the NotifyWindow.
		/// </summary>
		public System.Drawing.Drawing2D.Blend Blend;
		/// <summary>
		/// Gets or sets the StringFormat used when drawing text in the NotifyWindow.
		/// </summary>
		public System.Drawing.StringFormat StringFormat;
		/// <summary>
		/// Gets or sets a value specifiying whether or not the window should continue to be displayed if the mouse cursor is inside the bounds
		/// of the NotifyWindow.
		/// </summary>
		public bool WaitOnMouseOver;
		/// <summary>
		/// An EventHandler called when the NotifyWindow main text is clicked.
		/// </summary>
		public event System.EventHandler TextClicked;
		/// <summary>
		/// An EventHandler called when the NotifyWindow title text is clicked.
		/// </summary>
		public event System.EventHandler TitleClicked;
		/// <summary>
		/// Gets or sets the color of the title text.
		/// </summary>
		public System.Drawing.Color TitleColor;
		/// <summary>
		/// Gets or sets the color of the NotifyWindow main text.
		/// </summary>
		public System.Drawing.Color TextColor;
		/// <summary>
		/// Gets or sets the gradient color which will be blended in drawing the background.
		/// </summary>
		public System.Drawing.Color GradientColor;
		/// <summary>
		/// Gets or sets the color of text when the user clicks on it.
		/// </summary>
		public System.Drawing.Color PressedColor;
		/// <summary>
		/// Gets or sets the amount of milliseconds to display the NotifyWindow for.
		/// </summary>
		public int WaitTime;
		/// <summary>
		/// Gets or sets the full height of the NotifyWindow, used after the opening animation has been completed.
		/// </summary>
		public int ActualHeight;
		/// <summary>
		/// Gets or sets the full width of the NotifyWindow.
		/// </summary>
		public int ActualWidth;

		public enum BackgroundStyles { BackwardDiagonalGradient, ForwardDiagonalGradient, HorizontalGradient, VerticalGradient, Solid };
		public enum ClockStates { Opening, Closing, Showing, None };
		public ClockStates ClockState;
		#endregion

		#region Protected Variables
		protected bool closePressed = false, textPressed = false, titlePressed = false, closeHot = false, textHot = false, titleHot = false;
		protected Rectangle rClose, rText, rTitle, rDisplay, rScreen, rGlobClose, rGlobText, rGlobTitle, rGlobDisplay;
		protected System.Windows.Forms.Timer viewClock;
		#endregion

		#region Constructor
		/// <param name="title">Title text displayed in the NotifyWindow</param>
		/// <param name="text">Main text displayedin the NotifyWindow</param>
		public NotifyWindow (string title, string text) : this() { Title = title; Text = text; }
		/// <param name="text">Text displayed in the NotifyWindow</param>
		public NotifyWindow (string text) : this() { Text = text; }
		public NotifyWindow()
		{
			SetStyle (ControlStyles.UserMouse, true);
			SetStyle (ControlStyles.UserPaint, true);
			SetStyle (ControlStyles.AllPaintingInWmPaint, true);		// WmPaint calls OnPaint and OnPaintBackground
			SetStyle (ControlStyles.DoubleBuffer, true);

			ShowInTaskbar = false;
			FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
			StartPosition = System.Windows.Forms.FormStartPosition.Manual;

			// Default values
			BackgroundStyle = BackgroundStyles.VerticalGradient;
			ClockState = ClockStates.None;
			BackColor = Color.SteelBlue;
			GradientColor = Color.WhiteSmoke;
			PressedColor = Color.Gray;
			TitleColor = SystemColors.ControlText;
			TextColor = SystemColors.ControlText;
			WaitOnMouseOver = true;
			ActualWidth = 130;
			ActualHeight = 110;
			WaitTime = 11000;
		}
		#endregion

		#region Public Methods
		/// <summary>
		/// Sets the width and height of the NotifyWindow.
		/// </summary>
		public void SetDimensions (int width, int height)
		{
			ActualWidth = width;
			ActualHeight = height;
		}

		/// <summary>
		/// Displays the NotifyWindow.
		/// </summary>
		public void Notify()
		{
			if (Text == null || Text.Length < 1)
				throw new System.Exception ("You must set NotifyWindow.Text before calling Notify()");

			Width = ActualWidth;
			rScreen = Screen.GetWorkingArea (Screen.PrimaryScreen.Bounds);
			Height = 0;
			Top = rScreen.Bottom;
			Left = rScreen.Width - Width - 11;

			if (HoverFont == null)
				HoverFont = new Font (Font, Font.Style | FontStyle.Underline);
			if (TitleFont == null)
				TitleFont = Font;
			if (TitleHoverFont == null)
				TitleHoverFont = new Font (TitleFont, TitleFont.Style | FontStyle.Underline);
			if (this.StringFormat == null)
			{
				this.StringFormat = new StringFormat();
				this.StringFormat.Alignment = StringAlignment.Center;
				this.StringFormat.LineAlignment = StringAlignment.Center;
				this.StringFormat.Trimming = StringTrimming.EllipsisWord;
			}

			rDisplay = new Rectangle (0, 0, Width, ActualHeight);
			rClose = new Rectangle (Width - 21, 10, 13, 13);

			int offset;
			if (Title != null)
			{
				using (Graphics fx = CreateGraphics())
				{
					SizeF sz = fx.MeasureString (Title, TitleFont, ActualWidth - rClose.Width - 22, this.StringFormat);
					rTitle = new Rectangle (11, 12, (int) Math.Ceiling (sz.Width), (int) Math.Ceiling (sz.Height));
					offset = (int) Math.Max (Math.Ceiling (sz.Height + rTitle.Top + 2), rClose.Bottom + 5);
				}
			}
			else
			{
				offset = rClose.Bottom + 1;
				rTitle = new Rectangle (-1, -1, 1, 1);
			}

			rText = new Rectangle (11, offset, ActualWidth - 22, ActualHeight - (int)(offset * 1.5));
			// rGlob* are Rectangle's Offset'ed to their actual position on the screen, for use with Cursor.Position.
			rGlobClose = rClose;
			rGlobClose.Offset (Left, rScreen.Bottom - ActualHeight);
			rGlobText = rText;
			rGlobText.Offset (Left, rScreen.Bottom - ActualHeight);
			rGlobTitle = rTitle;
			if (Title != null)
				rGlobTitle.Offset (Left, rScreen.Bottom - ActualHeight);
			rGlobDisplay = rDisplay;
			rGlobDisplay.Offset (Left, rScreen.Bottom - ActualHeight);
			rGlobClose = rClose;
			rGlobClose.Offset (Left, rScreen.Bottom - ActualHeight);
			rGlobDisplay = rDisplay;
			rGlobDisplay.Offset (Left, rScreen.Bottom - ActualHeight);

			// Use unmanaged ShowWindow() and SetWindowPos() instead of the managed Show() to display the window - this method will display
			// the window TopMost, but without stealing focus (namely the SW_SHOWNOACTIVATE and SWP_NOACTIVATE flags)
			ShowWindow (Handle, SW_SHOWNOACTIVATE);
			SetWindowPos (Handle, HWND_TOPMOST, rScreen.Width - ActualWidth - 11, rScreen.Bottom, ActualWidth, 0, SWP_NOACTIVATE);

			viewClock = new System.Windows.Forms.Timer();
			viewClock.Tick += new System.EventHandler (viewTimer);
			viewClock.Interval = 1;
			viewClock.Start();

			ClockState = ClockStates.Opening;
		}
		#endregion

		#region Drawing
		protected override void OnPaint (System.Windows.Forms.PaintEventArgs e)
		{
			// Draw the close button and text.
			drawCloseButton (e.Graphics);

			Font useFont;  Color useColor;
			if (Title != null)
			{
				if (titleHot)
					useFont = TitleHoverFont;
				else
					useFont = TitleFont;
				if (titlePressed)
					useColor = PressedColor;
				else
					useColor = TitleColor;
				using (SolidBrush sb = new SolidBrush (useColor))
					e.Graphics.DrawString (Title, useFont, sb, rTitle, this.StringFormat);
			}

			if (textHot)
				useFont = HoverFont;
			else
				useFont = Font;
			if (textPressed)
				useColor = PressedColor;
			else
				useColor = TextColor;
			using (SolidBrush sb = new SolidBrush (useColor))
				e.Graphics.DrawString (Text, useFont, sb, rText, this.StringFormat);
		}

		protected override void OnPaintBackground (System.Windows.Forms.PaintEventArgs e)
		{
			// First paint the background
			if (BackgroundStyle == BackgroundStyles.Solid)
			{
				using (SolidBrush sb = new SolidBrush (BackColor))
					e.Graphics.FillRectangle (sb, rDisplay);
			}
			else
			{
				LinearGradientMode lgm;
				switch (BackgroundStyle)
				{
					case BackgroundStyles.BackwardDiagonalGradient:
						lgm = LinearGradientMode.BackwardDiagonal;
						break;
					case BackgroundStyles.ForwardDiagonalGradient:
						lgm = LinearGradientMode.ForwardDiagonal;
						break;
					case BackgroundStyles.HorizontalGradient:
						lgm = LinearGradientMode.Horizontal;
						break;
					default:
					case BackgroundStyles.VerticalGradient:
						lgm = LinearGradientMode.Vertical;
						break;
				}
				using (LinearGradientBrush lgb = new LinearGradientBrush (rDisplay, GradientColor, BackColor, lgm))
				{
					if (this.Blend != null)
						lgb.Blend = this.Blend;
					e.Graphics.FillRectangle (lgb, rDisplay);
				}