private Rectangle DrawCellContents(Graphics g, CellInfo cell, StyleInfo style, Rectangle r)
{
using (Brush foreBrush = new LinearGradientBrush(r.Location, new Point(r.X, r.Bottom),
style.ForeColor, style.ForeColor2))
{
if (cell.Image != null)
{
Rectangle r2 = new Rectangle(r.X + 1, r.Y + 1, cell.Image.Width, cell.Image.Height);
if (r2.Height > r.Height)
{
r2.Height = r.Height;
}
else if (r2.Height < r.Height)
{
r2.Y += ((r.Height - r2.Height) >> 1);
}
g.DrawImage(cell.Image, r2);
r.X += cell.Image.Width + 2;
r.Width -= (cell.Image.Width + 2);
}
r.X += 1;
r.Y += 1;
r.Width -= 1;
r.Height -= 1;
StringFormat sf = new StringFormat();
sf.Alignment = HorAlToStrAl(style.Algnment);
sf.LineAlignment = StringAlignment.Center;
sf.Trimming = StringTrimming.EllipsisCharacter;
sf.FormatFlags = StringFormatFlags.NoWrap;
g.DrawString(cell.Text, Font, foreBrush, r, sf);
}
return r;
}
protected virtual StyleInfo DoGenerateDefaultStyle(int column, DataGridViewCellStyle cellStyle, DataGridViewElementStates cellState)
{
StyleInfo style = null;
if ((cellState & DataGridViewElementStates.Selected) != DataGridViewElementStates.Selected)
{
style = new StyleInfo(cellStyle.BackColor, cellStyle.ForeColor,
cellStyle.Font, Columns[column].Alignment,
ChangeColor(cellStyle.BackColor, -32),
ChangeColor(cellStyle.ForeColor, 32));
}
else
{
if (realGrid.Focused && Enabled)
{
style = new StyleInfo(SystemColors.ActiveCaption,
SystemColors.ActiveCaptionText,
cellStyle.Font, Columns[column].Alignment,
SystemColors.GradientActiveCaption,
SystemColors.ActiveCaptionText);
}
else
{
style = new StyleInfo(SystemColors.InactiveCaption, SystemColors.InactiveCaptionText,
cellStyle.Font, Columns[column].Alignment,
SystemColors.GradientInactiveCaption,
SystemColors.InactiveCaptionText);
}
}
return style;
}
private void realGrid_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
Rectangle r = e.CellBounds;
Graphics g = e.Graphics;
int row = e.RowIndex;
int column = e.ColumnIndex;
DataGridViewCellStyle cellStyle = e.CellStyle;
DataGridViewElementStates cellState = e.State;
if (row >= 0 && column >= 0)
{
CellInfo cell = DoGetCellInfo(row, column);
StyleInfo style = DoGetStyleInfo(row, column);
if (style == null)
{
style = DoGenerateDefaultStyle(column, cellStyle, cellState);
}
int ident = DoGetIdent(row, column);
r = DoDrawBackground(r, g, style);
r.X += 2;
r.Y += 1;
r.Width -= 4;
r.Height -= 2;
if (DoDrawExpansion(column))
{
Rectangle r3 = new Rectangle(r.X + ident, r.Y, expansionImageWidth, r.Height);
ident += expansionImageWidth;
bool? isExpanded = DoGetExpanded(row, column);
if (isExpanded != null)
{
if ((Application.VisualStyleState & VisualStyleState.ClientAreaEnabled) ==
VisualStyleState.ClientAreaEnabled && VisualStyleRenderer.IsSupported)
{
VisualStyleRenderer rdr = new VisualStyleRenderer(
(((bool)isExpanded) ?
VisualStyleElement.TreeView.Glyph.Opened :
VisualStyleElement.TreeView.Glyph.Closed));
rdr.DrawBackground(g, r3);
}
else
{
Image img = (((bool)isExpanded) ? Resources.Collapse : Resources.Expand);
if (img.Height < r3.Height)
{
int chg = r3.Height - img.Height;
r3.Y += chg / 2;
r3.Height = img.Height;
}
g.DrawImage(img, r3);
}
}
}
r.X += ident;
r.Width -= ident;
DrawCellContents(g, cell, style, r);
e.Handled = true;
}
else if (row == -1 && column >= 0)
{
CellInfo cell = new CellInfo(Columns[column].HeadingText,
Columns[column].Image);
StyleInfo style = new StyleInfo(Color.Transparent, e.CellStyle.ForeColor,
e.CellStyle.Font, Columns[column].HeadingAlignment);
e.PaintBackground(e.ClipBounds, false);
r.X += 2;
r.Y += 1;
r.Width -= 4;
r.Height -= 2;
DrawCellContents(g, cell, style, r);
e.Handled = true;
}
}
protected virtual Rectangle DoDrawBackground(Rectangle r, Graphics g, StyleInfo style)
{
using (Brush bgBrush = new LinearGradientBrush(r.Location, new Point(r.X, r.Bottom),
style.BackColor, style.BackColor2))
g.FillRectangle(bgBrush, r);
Rectangle r2 = new Rectangle(r.Location, r.Size - new Size(1, 1));
using (Pen edgePen = new Pen(GridColor))
{
g.DrawLine(edgePen, new Point(r2.Left, r2.Bottom), new Point(r2.Right, r2.Bottom));
g.DrawLine(edgePen, new Point(r2.Right, r2.Top), new Point(r2.Right, r2.Bottom));
}
return r;
}
private void realGrid_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
Rectangle r = e.CellBounds;
Graphics g = e.Graphics;
int row = e.RowIndex;
int column = e.ColumnIndex;
DataGridViewCellStyle cellStyle = e.CellStyle;
DataGridViewElementStates cellState = e.State;
if (row >= 0 && column >= 0)
{
CellInfo cell = DoGetCellInfo(row, column);
StyleInfo style = DoGetStyleInfo(row, column);
if (style == null)
{
style = DoGenerateDefaultStyle(column, cellStyle, cellState);
}
int ident = DoGetIdent(row, column);
r = DoDrawBackground(r, g, style);
r.X += 2;
r.Y += 1;
r.Width -= 4;
r.Height -= 2;
if (DoDrawExpansion(column))
{
Rectangle r3 = new Rectangle(r.X + ident, r.Y, expansionImageWidth, r.Height);
ident += expansionImageWidth;
bool?isExpanded = DoGetExpanded(row, column);
if (isExpanded != null)
{
if ((Application.VisualStyleState & VisualStyleState.ClientAreaEnabled) ==
VisualStyleState.ClientAreaEnabled && VisualStyleRenderer.IsSupported)
{
VisualStyleRenderer rdr = new VisualStyleRenderer(
(((bool)isExpanded) ?
VisualStyleElement.TreeView.Glyph.Opened :
VisualStyleElement.TreeView.Glyph.Closed));
rdr.DrawBackground(g, r3);
}
else
{
Image img = (((bool)isExpanded) ? Resources.Collapse : Resources.Expand);
if (img.Height < r3.Height)
{
int chg = r3.Height - img.Height;
r3.Y += chg / 2;
r3.Height = img.Height;
}
g.DrawImage(img, r3);
}
}
}
r.X += ident;
r.Width -= ident;
DrawCellContents(g, cell, style, r);
e.Handled = true;
}
else if (row == -1 && column >= 0)
{
CellInfo cell = new CellInfo(Columns[column].HeadingText,
Columns[column].Image);
StyleInfo style = new StyleInfo(Color.Transparent, e.CellStyle.ForeColor,
e.CellStyle.Font, Columns[column].HeadingAlignment);
e.PaintBackground(e.ClipBounds, false);
r.X += 2;
r.Y += 1;
r.Width -= 4;
r.Height -= 2;
DrawCellContents(g, cell, style, r);
e.Handled = true;
}
}