|
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
namespace IssueVision
{
public class SectionHeader : Panel
{
// const values
private class Consts
{
public static Color ColorLow = Color.FromArgb(175, 200, 245);
public static Color ColorHigh = Color.FromArgb(205, 225, 250);
public static Pen PenTop = new Pen(Color.FromArgb(180, 210, 245));
public static Pen PenBottom = new Pen(SystemColors.InactiveCaption);
public const int PosOffset = 4;
}
// internal members
private LinearGradientBrush m_brush;
private string m_text = string.Empty;
[DefaultValueAttribute("")]
[CategoryAttribute("Appearance")]
[DescriptionAttribute("Header text.")]
public string HeaderText
{
get
{
return m_text;
}
set
{
m_text = value;
Invalidate();
}
}
public SectionHeader()
{
SetStyle(ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.AllPaintingInWmPaint | ControlStyles.DoubleBuffer, true);
}
// the caption needs to be drawn
protected override void OnPaint(PaintEventArgs e)
{
Draw(e.Graphics);
base.OnPaint(e);
}
// draw the caption
private void Draw(Graphics g)
{
if (Width != 0 && Height != 0)
{
// background
g.FillRectangle(m_brush, DisplayRectangle);
// header text
g.DrawString(m_text, Font, SystemBrushes.ControlText, Consts.PosOffset, ((Height - Font.Height) / 2));
// top and bottom lines
g.DrawLine(Consts.PenTop, 0, 0, Width - 1, 0);
g.DrawLine(Consts.PenBottom, 0, Height - 1, Width - 1, Height - 1);
}
}
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
if (Width > 0 && Height > 0)
{
// create the gradient brush when the control is resized
m_brush = new LinearGradientBrush(DisplayRectangle, Consts.ColorHigh, Consts.ColorLow, LinearGradientMode.Vertical);
}
}
}
}
|
By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.
If a file you wish to view isn't highlighted, and is a text file (not binary), please
let us know and we'll add colourisation support for it.
This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.
A list of licenses authors might use can be found here
Weidong has been an information system professional since 1990. He has a Master's degree in Computer Science, and is currently a MCSD .NET