using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Runtime.InteropServices;
using System;
using System.Drawing.Text;
using System.ComponentModel;
namespace ControlExs.ControlExs.CTabControl
{
public class CTabControl : TabControl
{
public CTabControl()
: base()
{
SetStyles();
}
private void SetStyles()
{
base.SetStyle(
ControlStyles.UserPaint |
ControlStyles.DoubleBuffer |
ControlStyles.OptimizedDoubleBuffer |
ControlStyles.AllPaintingInWmPaint |
ControlStyles.ResizeRedraw |
ControlStyles.SupportsTransparentBackColor, true);
base.UpdateStyles();
}
private Color _backColor = Color.FromArgb(23, 169, 254);
[Browsable(true)]
[EditorBrowsable(EditorBrowsableState.Always)]
[DefaultValue(typeof(Color), "23, 169, 254")]
public override Color BackColor
{
get { return _backColor; }
set
{
_backColor = value;
base.Invalidate(true);
}
}
private Color _borderColor = Color.FromArgb(23, 169, 254);
[DefaultValue(typeof(Color), "23, 169, 254")]
[Description("TabContorl边框色")]
public Color BorderColor
{
get { return _borderColor; }
set
{
_borderColor = value;
base.Invalidate(true);
}
}
private Color _headSelectedBackColor = Color.FromArgb(23, 169, 254);
[DefaultValue(typeof(Color), "23, 169, 254")]
[Description("TabPage头部选中后的背景颜色")]
public Color HeadSelectedBackColor
{
get { return _headSelectedBackColor; }
set { _headSelectedBackColor = value; }
}
private Color _headSelectedBorderColor = Color.FromArgb(23, 169, 254);
[DefaultValue(typeof(Color), "23, 169, 254")]
[Description("TabPage头部选中后的边框颜色")]
public Color HeadSelectedBorderColor
{
get { return _headSelectedBorderColor; }
set { _headSelectedBorderColor = value; }
}
private Color _headerBackColor = Color.FromArgb(23, 169, 254);
[DefaultValue(typeof(Color), "23, 169, 254")]
[Description("TabPage头部默认边框颜色")]
public Color HeaderBackColor
{
get { return _headerBackColor; }
set { _headerBackColor = value; }
}
protected override void OnPaintBackground(PaintEventArgs pevent)
{
if (this.DesignMode == true)
{
LinearGradientBrush backBrush = new LinearGradientBrush(
this.Bounds,
SystemColors.ControlLightLight,
SystemColors.ControlLight,
LinearGradientMode.Vertical);
pevent.Graphics.FillRectangle(backBrush, this.Bounds);
backBrush.Dispose();
}
else
{
this.PaintTransparentBackground(pevent.Graphics, this.ClientRectangle);
}
}
/// <summary>
/// TabContorl 背景色设置
/// </summary>
/// <param name="g"></param>
/// <param name="clipRect"></param>
protected void PaintTransparentBackground(Graphics g, Rectangle clipRect)
{
if ((this.Parent != null))
{
clipRect.Offset(this.Location);
PaintEventArgs e = new PaintEventArgs(g, clipRect);
GraphicsState state = g.Save();
g.SmoothingMode = SmoothingMode.HighSpeed;
try
{
g.TranslateTransform((float)-this.Location.X, (float)-this.Location.Y);
this.InvokePaintBackground(this.Parent, e);
this.InvokePaint(this.Parent, e);
}
finally
{
g.Restore(state);
clipRect.Offset(-this.Location.X, -this.Location.Y);
//新加片段,待测试
using (SolidBrush brush = new SolidBrush(_backColor))
{
clipRect.Inflate(1, 1);
g.FillRectangle(brush, clipRect);
}
}
}
else
{
System.Drawing.Drawing2D.LinearGradientBrush backBrush = new System.Drawing.Drawing2D.LinearGradientBrush(this.Bounds, SystemColors.ControlLightLight, SystemColors.ControlLight, System.Drawing.Drawing2D.LinearGradientMode.Vertical);
g.FillRectangle(backBrush, this.Bounds);
backBrush.Dispose();
}
}
protected override void OnPaint(PaintEventArgs e)
{
// Paint the Background
base.OnPaint(e);
this.PaintTransparentBackground(e.Graphics, this.ClientRectangle);
this.PaintAllTheTabs(e);
this.PaintTheTabPageBorder(e);
this.PaintTheSelectedTab(e);
}
private void PaintAllTheTabs(System.Windows.Forms.PaintEventArgs e)
{
if (this.TabCount > 0)
{
for (int index = 0; index < this.TabCount; index++)
{
this.PaintTab(e, index);
}
}
}
private void PaintTab(System.Windows.Forms.PaintEventArgs e, int index)
{
GraphicsPath path = this.GetPath(index);
this.PaintTabBackground(e.Graphics, index, path);
this.PaintTabBorder(e.Graphics, index, path);
this.PaintTabText(e.Graphics, index);
this.PaintTabImage(e.Graphics, index);
}
/// <summary>
/// 设置选项卡头部颜色
/// </summary>
/// <param name="graph"></param>
/// <param name="index"></param>
/// <param name="path"></param>
private void PaintTabBackground(System.Drawing.Graphics graph, int index, System.Drawing.Drawing2D.GraphicsPath path)
{
Rectangle rect = this.GetTabRect(index);
System.Drawing.Brush buttonBrush = new System.Drawing.Drawing2D.LinearGradientBrush(rect, SystemColors.ControlLightLight, SystemColors.ControlLight, LinearGradientMode.Vertical); //非选中时候的 TabPage 页头部背景色
//System.Drawing.Brush buttonBrush = new System.Drawing.SolidBrush(_headerBackColor);
if (index == this.SelectedIndex)
{
//buttonBrush = new System.Drawing.SolidBrush(SystemColors.ControlLightLight); // TabPage 选中时候页头部背景色
buttonBrush = new System.Drawing.SolidBrush(_headSelectedBackColor);
}
graph.FillPath(buttonBrush, path);
buttonBrush.Dispose();
}
/// <summary>
/// 设置选项卡头部边框色
/// </summary>
/// <param name="graph"></param>
/// <param name="index"></param>
/// <param name="path"></param>
private void PaintTabBorder(System.Drawing.Graphics graph, int index, System.Drawing.Drawing2D.GraphicsPath path)
{
//Pen borderPen = new Pen(SystemColors.ControlDark);
Pen borderPen = new Pen(_borderColor);// TabPage 非选中时候的 TabPage 头部边框色
if (index == this.SelectedIndex)
{
//borderPen = new Pen(ThemedColors.ToolBorder);
borderPen = new Pen(_headSelectedBorderColor); // TabPage 选中后的 TabPage 头部边框色
}
graph.DrawPath(borderPen, path);
borderPen.Dispose();
}
private void PaintTabImage(System.Drawing.Graphics g, int index)
{
Image tabImage = null;
if (this.TabPages[index].ImageIndex > -1 && this.ImageList != null)
{
tabImage = this.ImageList.Images[this.TabPages[index].ImageIndex];
}
else if (this.TabPages[index].ImageKey.Trim().Length > 0 && this.ImageList != null)
{
tabImage = this.ImageList.Images[this.TabPages[index].ImageKey];
}
if (tabImage != null)
{
Rectangle rect = this.GetTabRect(index);
g.DrawImage(tabImage, rect.Right - rect.Height - 4, 4, rect.Height - 2, rect.Height - 2);
}
}
private void PaintTabText(System.Drawing.Graphics graph, int index)
{
Rectangle rect = this.GetTabRect(index);
Rectangle rect2 = new Rectangle(rect.Left, rect.Top, rect.Width, rect.Height);
//Rectangle rect2 = new Rectangle(rect.Left + 16, rect.Top + 1, rect.Width - 6, rect.Height);
//if (index == 0)
//{
// rect2 = new Rectangle(rect.Left + rect.Height, rect.Top + 1, rect.Width - rect.Height, rect.Height);
//}
string tabtext = this.TabPages[index].Text;
System.Drawing.StringFormat format = new System.Drawing.StringFormat();
format.Alignment = StringAlignment.Near;
format.LineAlignment = StringAlignment.Center;
format.Trimming = StringTrimming.EllipsisCharacter;
Brush forebrush = null;
if (this.TabPages[index].Enabled == false)
{
forebrush = SystemBrushes.ControlDark;
}
else
{
forebrush = SystemBrushes.ControlText;
}
Font tabFont = this.Font;
if (index == this.SelectedIndex)
{
tabFont = new Font(this.Font, FontStyle.Bold);
//if (index == 0)
//{
// rect2 = new Rectangle(rect.Left + rect.Height, rect.Top + 1, rect.Width - rect.Height + 5, rect.Height);
//}
}
graph.DrawString(tabtext, tabFont, forebrush, rect2, format);
}
/// <summary>
/// 设置 TabPage 内容页边框色
/// </summary>
/// <param name="e"></param>
private void PaintTheTabPageBorder(System.Windows.Forms.PaintEventArgs e)
{
if (this.TabCount > 0)
{
Rectangle borderRect = this.TabPages[0].Bounds;
borderRect.Inflate(1, 1);
//ControlPaint.DrawBorder(e.Graphics, borderRect, ThemedColors.ToolBorder, ButtonBorderStyle.Solid);
ControlPaint.DrawBorder(e.Graphics, borderRect, this.BorderColor, ButtonBorderStyle.Solid);
}
}
/// <summary>
/// // TabPage 页头部间隔色
/// </summary>
/// <param name="e"></param>
private void PaintTheSelectedTab(System.Windows.Forms.PaintEventArgs e)
{
Rectangle selrect;
int selrectRight = 0;
switch (this.SelectedIndex)
{
case -1:
break;
case 0:
selrect = this.GetTabRect(this.SelectedIndex);
selrectRight = selrect.Right;
e.Graphics.DrawLine(SystemPens.ControlLightLight, selrect.Left + 2, selrect.Bottom + 1, selrectRight - 2, selrect.Bottom + 1);
break;
default:
selrect = this.GetTabRect(this.SelectedIndex);
selrectRight = selrect.Right;
e.Graphics.DrawLine(SystemPens.ControlLightLight, selrect.Left + 6 - selrect.Height, selrect.Bottom + 2, selrectRight - 2, selrect.Bottom + 2);
break;
}
}
private GraphicsPath GetPath(int index)
{
System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();
path.Reset();
Rectangle rect = this.GetTabRect(index);
switch (Alignment)
{
case TabAlignment.Top:
break;
case TabAlignment.Bottom:
break;
case TabAlignment.Left:
break;
case TabAlignment.Right:
break;
}
if (index == 0)
{
path.AddLine(rect.Left - 1, rect.Top + 1, rect.Left - 1, rect.Top + 1);
path.AddLine(rect.Left - 1, rect.Top + 1, rect.Right, rect.Top + 1);
path.AddLine(rect.Right, rect.Top + 1, rect.Right, rect.Bottom);
path.AddLine(rect.Right, rect.Bottom, rect.Left - 1, rect.Bottom);
}
else
{
if (index == this.SelectedIndex)
{
path.AddLine(rect.Left - 1, rect.Top, rect.Left - 1, rect.Top);
path.AddLine(rect.Left - 1, rect.Top, rect.Right, rect.Top);
path.AddLine(rect.Right, rect.Top, rect.Right, rect.Bottom);
path.AddLine(rect.Right, rect.Bottom + 1, rect.Left - 1, rect.Bottom + 1);
}
else
{
path.AddLine(rect.Left - 1, rect.Top, rect.Left - 1, rect.Top);
path.AddLine(rect.Left - 1, rect.Top, rect.Right, rect.Top);
path.AddLine(rect.Right, rect.Top, rect.Right, rect.Bottom);
path.AddLine(rect.Right, rect.Bottom + 1, rect.Left - 1, rect.Bottom + 1);
}
}
return path;
}
[DllImport("user32.dll")]
private static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);
private const int WM_SETFONT = 0x30;
private const int WM_FONTCHANGE = 0x1d;
protected override void OnCreateControl()
{
base.OnCreateControl();
this.OnFontChanged(EventArgs.Empty);
}
protected override void OnFontChanged(EventArgs e)
{
base.OnFontChanged(e);
IntPtr hFont = this.Font.ToHfont();
SendMessage(this.Handle, WM_SETFONT, hFont, (IntPtr)(-1));
SendMessage(this.Handle, WM_FONTCHANGE, IntPtr.Zero, IntPtr.Zero);
this.UpdateStyles();
//this.ItemSize = new Size(0, this.Font.Height + 2);
}
}
}
