taskbarnotifier.cs

Csharp编写的关于智能手机（smartphone）闹钟程序

		/// </summary>
		/// <returns>Nothing</returns>
		public new void Hide()
		{

			if (taskbarState != TaskbarStates.hidden )
			{
				timer.Stop();
				taskbarState = TaskbarStates.hidden;
				base.Hide();
			}
		}

		/// <summary>
		/// Sets the background bitmap and its transparency color
		/// </summary>
		/// <param name="strFilename">Path of the Background Bitmap on the disk</param>
		/// <param name="transparencyColor">Color of the Bitmap which won't be visible</param>
		/// <returns>Nothing</returns>
		public void SetBackgroundBitmap(string strFilename, Color transparencyColor)
		{
			BackgroundBitmap = new Bitmap(strFilename);
			Width = BackgroundBitmap.Width;
			Height = BackgroundBitmap.Height;
			Region = BitmapToRegion(BackgroundBitmap, transparencyColor);
		}

		/// <summary>
		/// Sets the background bitmap and its transparency color
		/// </summary>
		/// <param name="image">Image/Bitmap object which represents the Background Bitmap</param>
		/// <param name="transparencyColor">Color of the Bitmap which won't be visible</param>
		/// <returns>Nothing</returns>
		public void SetBackgroundBitmap(Image image, Color transparencyColor)
		{
			BackgroundBitmap = new Bitmap(image);
			Width = BackgroundBitmap.Width;
			Height = BackgroundBitmap.Height;
			Region = BitmapToRegion(BackgroundBitmap, transparencyColor);
		}

		/// <summary>
		/// Sets the 3-State Close Button bitmap, its transparency color and its coordinates
		/// </summary>
		/// <param name="strFilename">Path of the 3-state Close button Bitmap on the disk (width must a multiple of 3)</param>
		/// <param name="transparencyColor">Color of the Bitmap which won't be visible</param>
		/// <param name="position">Location of the close button on the popup</param>
		/// <returns>Nothing</returns>
		public void SetCloseBitmap(string strFilename, Color transparencyColor, Point position)
		{
			CloseBitmap = new Bitmap(strFilename);
			CloseBitmap.MakeTransparent(transparencyColor);
			CloseBitmapSize = new Size(CloseBitmap.Width/3, CloseBitmap.Height);
			CloseBitmapLocation = position;
		}

		/// <summary>
		/// Sets the 3-State Close Button bitmap, its transparency color and its coordinates
		/// </summary>
		/// <param name="image">Image/Bitmap object which represents the 3-state Close button Bitmap (width must be a multiple of 3)</param>
		/// <param name="transparencyColor">Color of the Bitmap which won't be visible</param>
		/// /// <param name="position">Location of the close button on the popup</param>
		/// <returns>Nothing</returns>
		public void SetCloseBitmap(Image image, Color transparencyColor, Point position)
		{
			CloseBitmap = new Bitmap(image);
			CloseBitmap.MakeTransparent(transparencyColor);
			CloseBitmapSize = new Size(CloseBitmap.Width/3, CloseBitmap.Height);
			CloseBitmapLocation = position;
		}
		#endregion

		#region TaskbarNotifier Protected Methods
		protected void DrawCloseButton(Graphics grfx)
		{
			if (CloseBitmap != null)
			{	
				Rectangle rectDest = new Rectangle(CloseBitmapLocation, CloseBitmapSize);
				Rectangle rectSrc;

				if (bIsMouseOverClose)
				{
					if (bIsMouseDown)
						rectSrc = new Rectangle(new Point(CloseBitmapSize.Width*2, 0), CloseBitmapSize);
					else
						rectSrc = new Rectangle(new Point(CloseBitmapSize.Width, 0), CloseBitmapSize);
				}		
				else
					rectSrc = new Rectangle(new Point(0, 0), CloseBitmapSize);
					

				grfx.DrawImage(CloseBitmap, rectDest, rectSrc, GraphicsUnit.Pixel);
			}
		}

		protected void DrawText(Graphics grfx)
		{
			if (titleText != null && titleText.Length != 0)
			{
				StringFormat sf = new StringFormat();
				sf.Alignment = StringAlignment.Near;
				sf.LineAlignment = StringAlignment.Center;
				sf.FormatFlags = StringFormatFlags.NoWrap;
				if (bIsMouseOverTitle)
					grfx.DrawString(titleText, hoverTitleFont, new SolidBrush(hoverTitleColor), TitleRectangle, sf);
				else
					grfx.DrawString(titleText, normalTitleFont, new SolidBrush(normalTitleColor), TitleRectangle, sf);
			}

			if (contentText != null && contentText.Length != 0)
			{
				StringFormat sf = new StringFormat();
				sf.Alignment = StringAlignment.Center;
				sf.LineAlignment = StringAlignment.Center;
				sf.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
				
				if (bIsMouseOverContent)
				{
					grfx.DrawString(contentText, hoverContentFont, new SolidBrush(hoverContentColor), ContentRectangle, sf);
					if (EnableSelectionRectangle)
						ControlPaint.DrawBorder3D(grfx, RealContentRectangle, Border3DStyle.Etched, Border3DSide.Top | Border3DSide.Bottom | Border3DSide.Left | Border3DSide.Right);
					
				}
				else
					grfx.DrawString(contentText, normalContentFont, new SolidBrush(normalContentColor), ContentRectangle, sf);
			}
		}

		protected void CalculateMouseRectangles()
		{
			Graphics grfx = CreateGraphics();
			StringFormat sf = new StringFormat();
			sf.Alignment = StringAlignment.Center;
			sf.LineAlignment = StringAlignment.Center;
			sf.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
			SizeF sizefTitle = grfx.MeasureString(titleText, hoverTitleFont, TitleRectangle.Width, sf);
			SizeF sizefContent = grfx.MeasureString(contentText, hoverContentFont, ContentRectangle.Width, sf);
			grfx.Dispose();

			RealTitleRectangle = new Rectangle(TitleRectangle.Left, TitleRectangle.Top, (int)sizefTitle.Width, (int)sizefTitle.Height);
			RealTitleRectangle.Inflate(0,2);
			RealContentRectangle = new Rectangle((ContentRectangle.Width-(int)sizefContent.Width)/2+ContentRectangle.Left, (ContentRectangle.Height-(int)sizefContent.Height)/2+ContentRectangle.Top, (int)sizefContent.Width, (int)sizefContent.Height);
			RealContentRectangle.Inflate(0,2);
		}

		protected Region BitmapToRegion(Bitmap bitmap, Color transparencyColor)
		{
			if (bitmap == null)
				throw new ArgumentNullException("Bitmap", "Bitmap cannot be null!");

			int height = bitmap.Height;
			int width = bitmap.Width;

			GraphicsPath path = new GraphicsPath();

			for (int j=0; j<height; j++ )
				for (int i=0; i<width; i++)
				{
					if (bitmap.GetPixel(i, j) == transparencyColor)
						continue;

					int x0 = i;

					while ((i < width) && (bitmap.GetPixel(i, j) != transparencyColor))
						i++;

					path.AddRectangle(new Rectangle(x0, j, i-x0, 1));
				}

			Region region = new Region(path);
			path.Dispose();
			return region;
		}
		#endregion

		#region TaskbarNotifier Events Overrides
		protected void OnTimer(Object obj, EventArgs ea)
		{
			switch (taskbarState)
			{
				case TaskbarStates.appearing:
					if (Height < BackgroundBitmap.Height)
						SetBounds(Left, Top-nIncrementShow ,Width, Height + nIncrementShow);
					else
					{
						timer.Stop();
						Height = BackgroundBitmap.Height;
						timer.Interval = nVisibleEvents;
						taskbarState = TaskbarStates.visible;
						timer.Start();
					}
					break;

				case TaskbarStates.visible:
					timer.Stop();
					timer.Interval = nHideEvents;
					taskbarState = TaskbarStates.disappearing;
					if(AutoHide)
						timer.Start();
					break;

				case TaskbarStates.disappearing:
					if (Top < WorkAreaRectangle.Bottom)
						SetBounds(Left, Top + nIncrementHide, Width, Height - nIncrementHide);
					else
						Hide();
					break;
			}
			
		}

		protected override void OnMouseEnter(EventArgs ea)
		{
			base.OnMouseEnter(ea);
			bIsMouseOverPopup = true;
			Refresh();
		}

		protected override void OnMouseLeave(EventArgs ea)
		{
			base.OnMouseLeave(ea);
			bIsMouseOverPopup = false;
			bIsMouseOverClose = false;
			bIsMouseOverTitle = false;
			bIsMouseOverContent = false;
			Refresh();
		}

		protected override void OnMouseMove(MouseEventArgs mea)
		{
			base.OnMouseMove(mea);

			bool bContentModified = false;
			
			if ( (mea.X > CloseBitmapLocation.X) && (mea.X < CloseBitmapLocation.X + CloseBitmapSize.Width) && (mea.Y > CloseBitmapLocation.Y) && (mea.Y < CloseBitmapLocation.Y + CloseBitmapSize.Height) && CloseClickable )
			{
				if (!bIsMouseOverClose)
				{
					bIsMouseOverClose = true;
					bIsMouseOverTitle = false;
					bIsMouseOverContent = false;
					Cursor = Cursors.Hand;
					bContentModified = true;
				}
			}
			else if (RealContentRectangle.Contains(new Point(mea.X, mea.Y)) && ContentClickable)
			{
				if (!bIsMouseOverContent)
				{
					bIsMouseOverClose = false;
					bIsMouseOverTitle = false;
					bIsMouseOverContent = true;
					Cursor = Cursors.Hand;
					bContentModified = true;
				}
			}
			else if (RealTitleRectangle.Contains(new Point(mea.X, mea.Y)) && TitleClickable)
			{
				if (!bIsMouseOverTitle)
				{
					bIsMouseOverClose = false;
					bIsMouseOverTitle = true;
					bIsMouseOverContent = false;
					Cursor = Cursors.Hand;
					bContentModified = true;
				}
			}
			else
			{
				if (bIsMouseOverClose || bIsMouseOverTitle || bIsMouseOverContent)
					bContentModified = true;

				bIsMouseOverClose = false;
				bIsMouseOverTitle = false;
				bIsMouseOverContent = false;
				Cursor = Cursors.Default;
			}

			if (bContentModified)
				Refresh();
		}

		protected override void OnMouseDown(MouseEventArgs mea)
		{
			base.OnMouseDown(mea);
			bIsMouseDown = true;
			
			if (bIsMouseOverClose)
				Refresh();
		}

		protected override void OnMouseUp(MouseEventArgs mea)
		{
			base.OnMouseDown(mea);
			bIsMouseDown = false;

			if (bIsMouseOverClose)
			{
					timer.Interval = nHideEvents ;
					this.taskbarState = TaskbarStates.disappearing ;
					timer.Start ();
							
				if (CloseClick != null)
					CloseClick(this, new EventArgs());
			}
			else if (bIsMouseOverTitle)
			{
				if (TitleClick != null)
					TitleClick(this, new EventArgs());
			}
			else if (bIsMouseOverContent)
			{
				if(!AutoHide)
				{
					timer.Interval = nHideEvents ;
					this.taskbarState = TaskbarStates.disappearing ;
					timer.Start ();
				}

				if (ContentClick != null)
					ContentClick(this, new EventArgs());
			}
		}

		protected override void OnPaintBackground(PaintEventArgs pea)
		{
			Graphics grfx = pea.Graphics;
			grfx.PageUnit = GraphicsUnit.Pixel;
			
			Graphics offScreenGraphics;
			Bitmap offscreenBitmap;
			
			offscreenBitmap = new Bitmap(BackgroundBitmap.Width, BackgroundBitmap.Height);
			offScreenGraphics = Graphics.FromImage(offscreenBitmap);
			
			if (BackgroundBitmap != null)
			{
				offScreenGraphics.DrawImage(BackgroundBitmap, 0, 0, BackgroundBitmap.Width, BackgroundBitmap.Height);
			}
			
			DrawCloseButton(offScreenGraphics);
			DrawText(offScreenGraphics);

			grfx.DrawImage(offscreenBitmap, 0, 0);
		}
		#endregion
	}
}