/*
* Copyright � 2005, Mathew Hall
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using XPTable.Events;
using XPTable.Models;
using XPTable.Themes;
namespace XPTable.Renderers
{
/// <summary>
/// A HeaderRenderer that draws gradient Column headers
/// </summary>
public class GradientHeaderRenderer : HeaderRenderer
{
#region Class Data
/// <summary>
/// The start Color of the gradient
/// </summary>
private Color startColor;
/// <summary>
/// The ned Color of the gradient
/// </summary>
private Color endColor;
/// <summary>
/// The Color of the Column header when it is pressed
/// </summary>
private Color pressedColor;
#endregion
#region Constructor
/// <summary>
/// Initializes a new instance of the GradientHeaderRenderer class
/// with default settings
/// </summary>
public GradientHeaderRenderer() : base()
{
// steel blue gradient
this.startColor = Color.FromArgb(200, 209, 215);
this.endColor = Color.FromArgb(239, 239, 239);
this.pressedColor = Color.Empty;
}
#endregion
#region Properties
/// <summary>
/// Gets or sets the start Color of the gradient
/// </summary>
[Category("Appearance"),
Description("The start color of a ColumnHeaders gradient")]
public Color StartColor
{
get
{
return this.startColor;
}
set
{
if (this.startColor != value)
{
this.startColor = value;
}
}
}
/// <summary>
/// Gets or sets the end Color of the gradient
/// </summary>
[Category("Appearance"),
Description("The end color of a ColumnHeaders gradient")]
public Color EndColor
{
get
{
return this.endColor;
}
set
{
if (this.endColor != value)
{
this.endColor = value;
}
}
}
/// <summary>
/// Gets or sets the Color of the Column header when it is pressed
/// </summary>
[Category("Appearance"),
Description("The color of a ColumnHeader when it is in a pressed state")]
public Color PressedColor
{
get
{
return this.pressedColor;
}
set
{
if (this.pressedColor != value)
{
this.pressedColor = value;
}
}
}
#endregion
#region Events
#region Paint
/// <summary>
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaintBackground(PaintHeaderEventArgs e)
{
base.OnPaintBackground(e);
if (e.Column == null || e.Column.ColumnState != ColumnState.Pressed)
{
using (LinearGradientBrush brush = new LinearGradientBrush(e.HeaderRect, this.StartColor, this.EndColor, LinearGradientMode.Vertical))
{
e.Graphics.FillRectangle(brush, e.HeaderRect);
}
using (Pen pen = new Pen(this.EndColor))
{
e.Graphics.DrawLine(pen, e.HeaderRect.Left, e.HeaderRect.Top, e.HeaderRect.Right-2, e.HeaderRect.Top);
e.Graphics.DrawLine(pen, e.HeaderRect.Left, e.HeaderRect.Top, e.HeaderRect.Left, e.HeaderRect.Bottom-1);
}
using (Pen pen = new Pen(this.StartColor))
{
e.Graphics.DrawLine(pen, e.HeaderRect.Right-1, e.HeaderRect.Top, e.HeaderRect.Right-1, e.HeaderRect.Bottom-1);
e.Graphics.DrawLine(pen, e.HeaderRect.Left+1, e.HeaderRect.Bottom-1, e.HeaderRect.Right-1, e.HeaderRect.Bottom-1);
}
}
else
{
Color pressed = this.PressedColor;
if (pressed == Color.Empty)
{
pressed = ControlPaint.Light(this.startColor);
}
using (SolidBrush brush = new SolidBrush(pressed))
{
e.Graphics.FillRectangle(brush, e.HeaderRect);
}
using (Pen pen = new Pen(this.StartColor))
{
e.Graphics.DrawRectangle(pen, e.HeaderRect.X, e.HeaderRect.Y, e.HeaderRect.Width-1, e.HeaderRect.Height-1);
}
}
}
/// <summary>
/// Raises the Paint event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaint(PaintHeaderEventArgs e)
{
base.OnPaint(e);
if (e.Column == null)
{
return;
}
Rectangle textRect = this.ClientRectangle;
Rectangle imageRect = Rectangle.Empty;
if (e.Column.Image != null)
{
imageRect = this.CalcImageRect();
textRect.Width -= imageRect.Width;
textRect.X += imageRect.Width;
if (e.Column.ImageOnRight)
{
imageRect.X = this.ClientRectangle.Right - imageRect.Width;
textRect.X = this.ClientRectangle.X;
}
if (e.Column.ColumnState == ColumnState.Pressed)
{
imageRect.X += 1;
imageRect.Y += 1;
}
this.DrawColumnHeaderImage(e.Graphics, e.Column.Image, imageRect, e.Column.Enabled);
}
if (e.Column.ColumnState == ColumnState.Pressed)
{
textRect.X += 1;
textRect.Y += 1;
}
if (e.Column.SortOrder != SortOrder.None)
{
Rectangle arrowRect = this.CalcSortArrowRect();
arrowRect.X = textRect.Right - arrowRect.Width;
textRect.Width -= arrowRect.Width;
this.DrawSortArrow(e.Graphics, arrowRect, e.Column.SortOrder, e.Column.Enabled);
}
if (e.Column.Text == null)
{
return;
}
if (e.Column.Text.Length > 0 && textRect.Width > 0)
{
if (e.Column.Enabled)
{
e.Graphics.DrawString(e.Column.Text, this.Font, this.ForeBrush, textRect, this.StringFormat);
}
else
{
using (SolidBrush brush = new SolidBrush(SystemPens.GrayText.Color))
{
e.Graphics.DrawString(e.Column.Text, this.Font, brush, textRect, this.StringFormat);
}
}
}
}
#endregion
#endregion
}
}