实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace CustomUIControls
{
public class TaskbarNotifier : System.Windows.Forms.Form
{
#region TaskbarNotifier Protected Members
protected Bitmap BackgroundBitmap = null;
protected Bitmap CloseBitmap = null;
protected Point CloseBitmapLocation;
protected Size CloseBitmapSize;
protected Rectangle RealTitleRectangle;
protected Rectangle RealContentRectangle;
protected Rectangle WorkAreaRectangle;
protected Timer timer = new Timer();
protected TaskbarStates taskbarState = TaskbarStates.hidden;
protected string titleText;
protected string contentText;
protected Color normalTitleColor = Color.FromArgb(255,0,0);
protected Color hoverTitleColor = Color.FromArgb(255,0,0);
protected Color normalContentColor = Color.FromArgb(0,0,0);
protected Color hoverContentColor = Color.FromArgb(0,0,0x66);
protected Font normalTitleFont = new Font("Arial",12,FontStyle.Regular,GraphicsUnit.Pixel);
protected Font hoverTitleFont = new Font("Arial",12,FontStyle.Bold,GraphicsUnit.Pixel);
protected Font normalContentFont = new Font("Arial",11,FontStyle.Regular,GraphicsUnit.Pixel);
protected Font hoverContentFont = new Font("Arial",11,FontStyle.Regular,GraphicsUnit.Pixel);
protected int nShowEvents;
protected int nHideEvents;
protected int nVisibleEvents;
protected int nIncrementShow;
protected int nIncrementHide;
protected bool bIsMouseOverPopup = false;
protected bool bIsMouseOverClose = false;
protected bool bIsMouseOverContent = false;
protected bool bIsMouseOverTitle = false;
protected bool bIsMouseDown = false;
protected bool bKeepVisibleOnMouseOver = true;
protected bool bReShowOnMouseOver = false;
#endregion
#region TaskbarNotifier Public Members
public Rectangle TitleRectangle;
public Rectangle ContentRectangle;
public bool TitleClickable = false;
public bool ContentClickable = true;
public bool CloseClickable = true;
public bool EnableSelectionRectangle = true;
public event EventHandler CloseClick = null;
public event EventHandler TitleClick = null;
public event EventHandler ContentClick = null;
#endregion
#region TaskbarNotifier Enums
public enum TaskbarStates
{
hidden = 0,
appearing = 1,
visible = 2,
disappearing = 3
}
#endregion
#region TaskbarNotifier Constructor
public TaskbarNotifier()
{
FormBorderStyle = FormBorderStyle.None;
WindowState = FormWindowState.Minimized;
base.Show();
base.Hide();
WindowState = FormWindowState.Normal;
ShowInTaskbar = false;
TopMost = true;
MaximizeBox = false;
MinimizeBox = false;
ControlBox = false;
timer.Enabled = true;
timer.Tick = new EventHandler(OnTimer);
}
#endregion
#region TaskbarNotifier Properties
public TaskbarStates TaskbarState
{
get
{
return taskbarState;
}
}
public string TitleText
{
get
{
return titleText;
}
set
{
titleText=value;
Refresh();
}
}
public string ContentText
{
get
{
return contentText;
}
set
{
contentText=value;
Refresh();
}
}
public Color NormalTitleColor
{
get
{
return normalTitleColor;
}
set
{
normalTitleColor = value;
Refresh();
}
}
public Color HoverTitleColor
{
get
{
return hoverTitleColor;
}
set
{
hoverTitleColor = value;
Refresh();
}
}
public Color NormalContentColor
{
get
{
return normalContentColor;
}
set
{
normalContentColor = value;
Refresh();
}
}
public Color HoverContentColor
{
get
{
return hoverContentColor;
}
set
{
hoverContentColor = value;
Refresh();
}
}
public Font NormalTitleFont
{
get
{
return normalTitleFont;
}
set
{
normalTitleFont = value;
Refresh();
}
}
public Font HoverTitleFont
{
get
{
return hoverTitleFont;
}
set
{
hoverTitleFont = value;
Refresh();
}
}
public Font NormalContentFont
{
get
{
return normalContentFont;
}
set
{
normalContentFont = value;
Refresh();
}
}
public Font HoverContentFont
{
get
{
return hoverContentFont;
}
set
{
hoverContentFont = value;
Refresh();
}
}
public bool KeepVisibleOnMousOver
{
get
{
return bKeepVisibleOnMouseOver;
}
set
{
bKeepVisibleOnMouseOver=value;
}
}
public bool ReShowOnMouseOver
{
get
{
return bReShowOnMouseOver;
}
set
{
bReShowOnMouseOver=value;
}
}
#endregion
#region TaskbarNotifier Public Methods
[DllImport("user32.dll")]
private static extern Boolean ShowWindow(IntPtr hWnd,Int32 nCmdShow);
public void Show(string strTitle, string strContent, int nTimeToShow, int nTimeToStay, int nTimeToHide)
{
WorkAreaRectangle = Screen.GetWorkingArea(WorkAreaRectangle);
titleText = strTitle;
contentText = strContent;
nVisibleEvents = nTimeToStay;
CalculateMouseRectangles();
int nEvents;
if (nTimeToShow > 10)
{
nEvents = Math.Min((nTimeToShow / 10), BackgroundBitmap.Height);
nShowEvents = nTimeToShow / nEvents;
nIncrementShow = BackgroundBitmap.Height / nEvents;
}
else
{
nShowEvents = 10;
nIncrementShow = BackgroundBitmap.Height;
}
if( nTimeToHide > 10)
{
nEvents = Math.Min((nTimeToHide / 10), BackgroundBitmap.Height);
nHideEvents = nTimeToHide / nEvents;
nIncrementHide = BackgroundBitmap.Height / nEvents;
}
else
{
nHideEvents = 10;
nIncrementHide = BackgroundBitmap.Height;
}
switch (taskbarState)
{
case TaskbarStates.hidden:
taskbarState = TaskbarStates.appearing;
SetBounds(WorkAreaRectangle.Right-BackgroundBitmap.Width-17, WorkAreaRectangle.Bottom-1, BackgroundBitmap.Width, 0);
timer.Interval = nShowEvents;
timer.Start();
ShowWindow(this.Handle, 4);
break;
case TaskbarStates.appearing:
Refresh();
break;
case TaskbarStates.visible:
timer.Stop();
timer.Interval = nVisibleEvents;
timer.Start();
Refresh();
break;
case TaskbarStates.disappearing:
timer.Stop();
taskbarState = TaskbarStates.visible;
SetBounds(WorkAreaRectangle.Right-BackgroundBitmap.Width-17, WorkAreaRectangle.Bottom-BackgroundBitmap.Height-1, BackgroundBitmap.Width, BackgroundBitmap.Height);
timer.Interval = nVisibleEvents;
timer.Start();
Refresh();
break;
}
}
public new void Hide()
{
if (taskbarState != TaskbarStates.hidden)
{
timer.Stop();
taskbarState = TaskbarStates.hidden;
base.Hide();
}
}
public void SetBackgroundBitmap(string strFilename, Color transparencyColor)
{
BackgroundBitmap = new Bitmap(strFilename);
Width = BackgroundBitmap.Width;
Height = BackgroundBitmap.Height;
Region = BitmapToRegion(BackgroundBitmap, transparencyColor);
}
public void SetBackgroundBitmap(Image image, Color transparencyColor)
{
BackgroundBitmap = new Bitmap(image);
Width = BackgroundBitmap.Width;
Height = BackgroundBitmap.Height;
Region = BitmapToRegion(BackgroundBitmap, transparencyColor);
}
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;
}
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;
sf.Trimming = StringTrimming.EllipsisCharacter;
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;
sf.Trimming = StringTrimming.Word;
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();
if (sizefTitle.Height > TitleRectangle.Height)
{
RealTitleRectangle = new Rectangle(TitleRectangle.Left, TitleRectangle.Top, TitleRectangle.Width , TitleRectangle.Height );
}
else
{
RealTitleRectangle = new Rectangle(TitleRectangle.Left, TitleRectangle.Top, (int)sizefTitle.Width, (int)sizefTitle.Height);
}
RealTitleRectangle.Inflate(0,2);
if (sizefContent.Height > ContentRectangle.Height)
{
RealContentRectangle = new Rectangle((ContentRectangle.Width-(int)sizefContent.Width)/2 ContentRectangle.Left, ContentRectangle.Top, (int)sizefContent.Width, ContentRectangle.Height );
}
else
{
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;
if ((bKeepVisibleOnMouseOver && !bIsMouseOverPopup ) || (!bKeepVisibleOnMouseOver))
{
taskbarState = TaskbarStates.disappearing;
}
timer.Start();
break;
case TaskbarStates.disappearing:
if (bReShowOnMouseOver && bIsMouseOverPopup)
{
taskbarState = TaskbarStates.appearing;
}
else
{
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.OnMouseUp(mea);
bIsMouseDown = false;
if (bIsMouseOverClose)
{
Hide();
if (CloseClick != null)
CloseClick(this, new EventArgs());
}
else if (bIsMouseOverTitle)
{
if (TitleClick != null)
TitleClick(this, new EventArgs());
}
else if (bIsMouseOverContent)
{
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
private void InitializeComponent()
{
//
// TaskbarNotifier
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Name = "TaskbarNotifier";
this.Load = new System.EventHandler(this.TaskbarNotifier_Load);
}
private void TaskbarNotifier_Load(object sender, System.EventArgs e)
{
}
}
}
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