www.pudn.com > SourceCode_TabControl.zip > TabCtlEx.cs
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Data;
using System.Windows.Forms;
using System.IO;
using System.Reflection;
namespace MyControlLibrary
{
///
/// Summary description for UserControl1.
///
public class TabCtlEx : System.Windows.Forms.TabControl
{
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null;
public delegate void OnHeaderCloseDelegate(object sender,CloseEventArgs e);
public event OnHeaderCloseDelegate OnClose;
public TabCtlEx()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
this.TabStop = false;
// TODO: Add any initialization after the InitComponent call
}
private bool confirmOnClose = true;
public bool ConfirmOnClose
{
get
{
return this.confirmOnClose;
}
set
{
this.confirmOnClose = value;
}
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if( components != null )
components.Dispose();
}
base.Dispose( disposing );
}
#region Component Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
SetStyle(System.Windows.Forms.ControlStyles.DoubleBuffer,true );
this.TabStop = false;
//this.Controls.Add(this.btnClose);
}
#endregion
private Stream GetContentFromResource(string filename)
{
Assembly asm = Assembly.GetExecutingAssembly();
Stream stream = asm.GetManifestResourceStream("MyControlLibrary."+filename);
return stream;
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
RectangleF tabTextArea = RectangleF.Empty;
for (int nIndex = 0; nIndex < this.TabCount; nIndex++)
{
if (nIndex != this.SelectedIndex)
{
tabTextArea = (RectangleF)this.GetTabRect(nIndex);
GraphicsPath _Path = new GraphicsPath();
_Path.AddRectangle(tabTextArea);
using (LinearGradientBrush _Brush = new LinearGradientBrush(tabTextArea, SystemColors.Control, SystemColors.ControlLight, LinearGradientMode.Vertical))
{
ColorBlend _ColorBlend = new ColorBlend(3);
_ColorBlend.Colors = new Color[]{SystemColors.ControlLightLight,
Color.FromArgb(255,SystemColors.ControlLight),SystemColors.ControlDark,
SystemColors.ControlLightLight};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
e.Graphics.FillPath(_Brush, _Path);
using (Pen pen = new Pen(SystemColors.ActiveBorder))
{
e.Graphics.DrawPath(pen, _Path);
}
_ColorBlend.Colors = new Color[]{ SystemColors.ActiveBorder,
SystemColors.ActiveBorder,SystemColors.ActiveBorder,
SystemColors.ActiveBorder};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
e.Graphics.FillRectangle(_Brush, tabTextArea.X + tabTextArea.Width - 22, 4, tabTextArea.Height - 3, tabTextArea.Height - 5);
e.Graphics.DrawRectangle(Pens.White, tabTextArea.X + tabTextArea.Width - 20, 6, tabTextArea.Height - 8, tabTextArea.Height - 9);
using (Pen pen = new Pen(Color.White, 2))
{
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 16, 9, tabTextArea.X + tabTextArea.Width - 7, 17);
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 16, 17, tabTextArea.X + tabTextArea.Width - 7, 9);
}
if (CanDrawMenuButton(nIndex))
{
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
// assign the color blend to the pathgradientbrush
_Brush.InterpolationColors = _ColorBlend;
e.Graphics.FillRectangle(_Brush, tabTextArea.X + tabTextArea.Width - 43, 4, tabTextArea.Height - 3, tabTextArea.Height - 5);
//e.Graphics.DrawRectangle(SystemPens.GradientInactiveCaption, tabTextArea.X + tabTextArea.Width - 37, 7, 13, 13);
e.Graphics.DrawRectangle(new Pen(Color.White), tabTextArea.X + tabTextArea.Width - 41, 6, tabTextArea.Height - 7, tabTextArea.Height - 9);
using (Pen pen = new Pen(Color.White, 2))
{
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 36, 11, tabTextArea.X + tabTextArea.Width - 33, 16);
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 33, 16, tabTextArea.X + tabTextArea.Width - 30, 11);
}
}
}
_Path.Dispose();
}
else
{
tabTextArea = (RectangleF)this.GetTabRect(nIndex);
GraphicsPath _Path = new GraphicsPath();
_Path.AddRectangle(tabTextArea);
using (LinearGradientBrush _Brush = new LinearGradientBrush(tabTextArea, SystemColors.Control, SystemColors.ControlLight, LinearGradientMode.Vertical))
{
ColorBlend _ColorBlend = new ColorBlend(3);
_ColorBlend.Colors = new Color[]{SystemColors.ControlLightLight,
Color.FromArgb(255,SystemColors.Control),SystemColors.ControlLight,
SystemColors.Control};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
e.Graphics.FillPath(_Brush, _Path);
using (Pen pen = new Pen(SystemColors.ActiveBorder))
{
e.Graphics.DrawPath(pen, _Path);
}
//Drawing Close Button
_ColorBlend.Colors = new Color[]{Color.FromArgb(255,231,164,152),
Color.FromArgb(255,231,164,152),Color.FromArgb(255,197,98,79),
Color.FromArgb(255,197,98,79)};
_Brush.InterpolationColors = _ColorBlend;
e.Graphics.FillRectangle(_Brush, tabTextArea.X + tabTextArea.Width - 22, 4, tabTextArea.Height - 3, tabTextArea.Height - 5);
e.Graphics.DrawRectangle(Pens.White, tabTextArea.X + tabTextArea.Width - 20, 6, tabTextArea.Height - 8, tabTextArea.Height - 9);
using (Pen pen = new Pen(Color.White, 2))
{
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 16, 9, tabTextArea.X + tabTextArea.Width - 7, 17);
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 16, 17, tabTextArea.X + tabTextArea.Width - 7, 9);
}
if (CanDrawMenuButton(nIndex))
{
//Drawing menu button
_ColorBlend.Colors = new Color[]{SystemColors.ControlLightLight,
Color.FromArgb(255,SystemColors.ControlLight),SystemColors.ControlDark,
SystemColors.ControlLightLight};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
_ColorBlend.Colors = new Color[]{Color.FromArgb(255,170,213,243),
Color.FromArgb(255,170,213,243),Color.FromArgb(255,44,137,191),
Color.FromArgb(255,44,137,191)};
_Brush.InterpolationColors = _ColorBlend;
e.Graphics.FillRectangle(_Brush, tabTextArea.X + tabTextArea.Width - 43, 4, tabTextArea.Height - 3, tabTextArea.Height - 5);
e.Graphics.DrawRectangle(Pens.White, tabTextArea.X + tabTextArea.Width - 41, 6, tabTextArea.Height - 7, tabTextArea.Height - 9);
using (Pen pen = new Pen(Color.White, 2))
{
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 36, 11, tabTextArea.X + tabTextArea.Width - 33, 16);
e.Graphics.DrawLine(pen, tabTextArea.X + tabTextArea.Width - 33, 16, tabTextArea.X + tabTextArea.Width - 30, 11);
}
}
}
_Path.Dispose();
}
string str = this.TabPages[nIndex].Text;
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center;
e.Graphics.DrawString(str, this.Font, new SolidBrush(this.TabPages[nIndex].ForeColor), tabTextArea, stringFormat);
}
}
private bool CanDrawMenuButton(int nIndex)
{
if(((TabPageEx)this.TabPages[nIndex]).Menu != null)
return true;
return false;
}
protected override void OnMouseLeave(EventArgs e)
{
Invalidate();
}
protected override void OnMouseMove(MouseEventArgs e)
{
for(int nIndex = 0 ; nIndex < this.TabCount ; nIndex++)
{
RectangleF tabTextArea = (RectangleF)this.GetTabRect(nIndex);
tabTextArea = new RectangleF(tabTextArea.X + tabTextArea.Width - 22, 4, tabTextArea.Height - 3, tabTextArea.Height - 5);
Graphics g = CreateGraphics();
g.SmoothingMode = SmoothingMode.AntiAlias;
Point pt = new Point(e.X,e.Y) ;
if(tabTextArea.Contains(pt))
{
using (LinearGradientBrush _Brush = new LinearGradientBrush(tabTextArea, SystemColors.Control, SystemColors.ControlLight, LinearGradientMode.Vertical))
{
ColorBlend _ColorBlend = new ColorBlend(3);
_ColorBlend.Colors = new Color[]{Color.FromArgb(255,252,193,183),
Color.FromArgb(255,252,193,183),Color.FromArgb(255,210,35,2),
Color.FromArgb(255,210,35,2)};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
g.FillRectangle(_Brush, tabTextArea);
g.DrawRectangle(Pens.White, tabTextArea.X +2, 6, tabTextArea.Height - 3, tabTextArea.Height - 4);
using (Pen pen = new Pen(Color.White, 2))
{
g.DrawLine(pen, tabTextArea.X + 6, 9, tabTextArea.X + 15, 17);
g.DrawLine(pen, tabTextArea.X + 6, 17, tabTextArea.X + 15, 9);
}
}
}
else
{
if (nIndex != SelectedIndex)
{
using (LinearGradientBrush _Brush = new LinearGradientBrush(tabTextArea, SystemColors.Control, SystemColors.ControlLight, LinearGradientMode.Vertical))
{
ColorBlend _ColorBlend = new ColorBlend(3);
_ColorBlend.Colors = new Color[]{SystemColors.ActiveBorder,
SystemColors.ActiveBorder,SystemColors.ActiveBorder,
SystemColors.ActiveBorder};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
g.FillRectangle(_Brush, tabTextArea);
g.DrawRectangle(Pens.White, tabTextArea.X + 2, 6, tabTextArea.Height - 3, tabTextArea.Height - 4);
using (Pen pen = new Pen(Color.White, 2))
{
g.DrawLine(pen, tabTextArea.X + 6, 9, tabTextArea.X + 15, 17);
g.DrawLine(pen, tabTextArea.X + 6, 17, tabTextArea.X + 15, 9);
}
}
}
}
if (CanDrawMenuButton(nIndex))
{
RectangleF tabMenuArea = (RectangleF)this.GetTabRect(nIndex);
tabMenuArea = new RectangleF(tabMenuArea.X + tabMenuArea.Width - 43, 4, tabMenuArea.Height - 3, tabMenuArea.Height - 5);
pt = new Point(e.X, e.Y);
if (tabMenuArea.Contains(pt))
{
using (LinearGradientBrush _Brush = new LinearGradientBrush(tabMenuArea, SystemColors.Control, SystemColors.ControlLight, LinearGradientMode.Vertical))
{
ColorBlend _ColorBlend = new ColorBlend(3);
_ColorBlend.Colors = new Color[]{Color.FromArgb(255,170,213,255),
Color.FromArgb(255,170,213,255),Color.FromArgb(255,44,157,250),
Color.FromArgb(255,44,157,250)};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
g.FillRectangle(_Brush, tabMenuArea);
g.DrawRectangle(Pens.White, tabMenuArea.X + 2, 6, tabMenuArea.Height - 2, tabMenuArea.Height - 4);
using (Pen pen = new Pen(Color.White, 2))
{
g.DrawLine(pen, tabMenuArea.X + 7, 11, tabMenuArea.X + 10, 16);
g.DrawLine(pen, tabMenuArea.X + 10, 16, tabMenuArea.X + 13, 11);
}
}
}
else
{
if (nIndex != SelectedIndex)
{
using (LinearGradientBrush _Brush = new LinearGradientBrush(tabMenuArea, SystemColors.Control, SystemColors.ControlLight, LinearGradientMode.Vertical))
{
ColorBlend _ColorBlend = new ColorBlend(3);
_ColorBlend.Colors = new Color[]{SystemColors.ActiveBorder,
SystemColors.ActiveBorder,SystemColors.ActiveBorder,
SystemColors.ActiveBorder};
_ColorBlend.Positions = new float[] { 0f, .4f, 0.5f, 1f };
_Brush.InterpolationColors = _ColorBlend;
g.FillRectangle(_Brush, tabMenuArea);
g.DrawRectangle(Pens.White, tabMenuArea.X + 2, 6, tabMenuArea.Height - 2, tabMenuArea.Height - 4);
using (Pen pen = new Pen(Color.White, 2))
{
g.DrawLine(pen, tabMenuArea.X + 7, 11, tabMenuArea.X + 10, 16);
g.DrawLine(pen, tabMenuArea.X + 10, 16, tabMenuArea.X + 13, 11);
}
}
}
}
}
g.Dispose();
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
RectangleF tabTextArea = (RectangleF)this.GetTabRect(SelectedIndex);
tabTextArea = tabTextArea = new RectangleF(tabTextArea.X + tabTextArea.Width - 22, 4, tabTextArea.Height - 3, tabTextArea.Height - 5);
Point pt = new Point(e.X,e.Y);
if(tabTextArea.Contains(pt))
{
if(confirmOnClose)
{
if(MessageBox.Show("You are about to close "+this.TabPages[SelectedIndex].Text.TrimEnd() + " tab. Are you sure you want to continue?","Confirm close",MessageBoxButtons.YesNo) == DialogResult.No)
return;
}
//Fire Event to Client
if(OnClose != null)
{
OnClose(this,new CloseEventArgs(SelectedIndex));
}
}
if (CanDrawMenuButton(SelectedIndex))
{
RectangleF tabMenuArea = (RectangleF)this.GetTabRect(SelectedIndex);
tabMenuArea = new RectangleF(tabMenuArea.X + tabMenuArea.Width - 43, 4, tabMenuArea.Height - 3, tabMenuArea.Height - 5);
pt = new Point(e.X, e.Y);
if (tabMenuArea.Contains(pt))
{
if (((TabPageEx)this.TabPages[SelectedIndex]).Menu != null)
{
((TabPageEx)this.TabPages[SelectedIndex]).Menu.Show(this, new Point((int)tabMenuArea.X, (int)(tabMenuArea.Y + tabMenuArea.Height)));
}
}
}
}
}
public class CloseEventArgs:EventArgs
{
private int nTabIndex = -1;
public CloseEventArgs(int nTabIndex)
{
this.nTabIndex = nTabIndex;
}
///
/// Get/Set the tab index value where the close button is clicked
///
public int TabIndex
{
get
{
return this.nTabIndex;
}
set
{
this.nTabIndex = value;
}
}
}
}