private void InitGrid()
{
Columns = new ArrayList();
Rows = new ArrayList();
OfferBookGrid grid = (OfferBookGrid)dataSource;
// use reflection to discover all properties of the object
foreach (DataGridViewColumn c in grid.Columns)
{
Columns.Add(c.Name);
}
foreach (OfferBookGridRow r in grid.Rows)
{
if (!r.IsGroupRow && !r.IsNewRow)
{
DataSourceRow row = new DataSourceRow(this, r);
for (int i = 0; i < Columns.Count; i++)
{
row.Add(r.Cells[i].Value);
}
Rows.Add(row);
}
}
}
/// <summary>
/// this function checks if the user hit the expand (+) or collapse (-) icon.
/// if it was hit it will return true
/// </summary>
/// <param name="e">mouse click event arguments</param>
/// <returns>returns true if the icon was hit, false otherwise</returns>
internal bool IsIconHit(DataGridViewCellMouseEventArgs e)
{
if (e.ColumnIndex < 0)
{
return(false);
}
OfferBookGrid grid = (OfferBookGrid)this.DataGridView;
Rectangle rowBounds = grid.GetRowDisplayRectangle(this.Index, false);
int x = e.X;
//DataGridViewColumn c = grid.Columns[e.ColumnIndex];
//if (this.isGroupRow &&
// (c.DisplayIndex == 0) &&
// (x > rowBounds.Left + 4) &&
// (x < rowBounds.Left + 16) &&
// (e.Y > rowBounds.Height - 18) &&
// (e.Y < rowBounds.Height - 7))
// return true;
DataGridViewColumn c;
switch (((OfferBookGrid)this.DataGridView).Type)
{
case GridType.Buy:
c = grid.Columns[e.ColumnIndex];
if (this.isGroupRow &&
(c.DisplayIndex == 0) &&
(x > rowBounds.Left + 4) &&
(x < rowBounds.Left + 16) &&
(e.Y > rowBounds.Height - 18) &&
(e.Y < rowBounds.Height - 7))
{
return(true);
}
break;
case GridType.Sell:
c = grid.Columns[e.ColumnIndex];
if (this.isGroupRow &&
(c.DisplayIndex == 2) &&
(x > c.Width - 15) &&
(x < c.Width - 5) &&
(e.Y < rowBounds.Height - 7) &&
(e.Y > rowBounds.Height - 18))
{
return(true);
}
break;
}
return(false);
}
/// <summary>
/// the main difference with a Group row and a regular row is the way it is painted on the control.
/// the Paint method is therefore overridden and specifies how the Group row is painted.
/// Note: this method is not implemented optimally. It is merely used for demonstration purposes
/// </summary>
/// <param name="graphics"></param>
/// <param name="clipBounds"></param>
/// <param name="rowBounds"></param>
/// <param name="rowIndex"></param>
/// <param name="rowState"></param>
/// <param name="isFirstDisplayedRow"></param>
/// <param name="isLastVisibleRow"></param>
protected override void Paint(System.Drawing.Graphics graphics, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle rowBounds, int rowIndex, DataGridViewElementStates rowState, bool isFirstDisplayedRow, bool isLastVisibleRow)
{
if (this.isGroupRow)
{
OfferBookGrid grid = (OfferBookGrid)this.DataGridView;
int rowHeadersWidth = grid.RowHeadersVisible ? grid.RowHeadersWidth : 0;
// this can be optimized
Color color = base.DataGridView.AlternatingRowsDefaultCellStyle.BackColor;
Brush brush = new SolidBrush(grid.GroupHeaderBackColor);
Brush brush2 = new SolidBrush(grid.GroupHeaderUnderlineColor);
Brush brush3 = new SolidBrush(grid.GroupHeaderFontColor);
int gridwidth = grid.Columns.GetColumnsWidth(DataGridViewElementStates.Displayed);
Rectangle rowBounds2 = grid.GetRowDisplayRectangle(this.Index, true);
// draw the background
graphics.FillRectangle(brush, rowBounds.Left + rowHeadersWidth - grid.HorizontalScrollingOffset, rowBounds.Top, gridwidth, rowBounds.Height - 1);
// draw text, using the current grid font
string[] s = group.Text.Split('|');
SizeF stringSize = new SizeF();
stringSize = graphics.MeasureString(s[1], grid.GroupHeaderFont);
// Não mostrar a corretora
//graphics.DrawString(s[0], grid.GroupHeaderFont, brush3, grid.Columns[0].Width - stringSize.Width - 5, rowBounds.Bottom - 18);
if (stringSize.Width > (grid.Columns[1].Width - 10))
{
string texto = s[1].ToInt64().ToNumeroAbreviado();
stringSize = graphics.MeasureString(texto, grid.GroupHeaderFont);
graphics.DrawString(texto, grid.GroupHeaderFont, brush3, grid.Columns[0].Width + grid.Columns[1].Width - stringSize.Width - 5, rowBounds.Bottom - 18);
}
else
{
switch (((OfferBookGrid)this.DataGridView).Type)
{
case GridType.Buy:
graphics.DrawString(s[1], grid.GroupHeaderFont, brush3, grid.Columns[0].Width + grid.Columns[1].Width - stringSize.Width - 5, rowBounds.Bottom - 18);
break;
case GridType.Sell:
graphics.DrawString(s[1], grid.GroupHeaderFont, brush3, grid.Columns[0].Width + 5, rowBounds.Bottom - 18);
break;
}
}
stringSize = graphics.MeasureString(s[2], grid.GroupHeaderFont);
switch (((OfferBookGrid)this.DataGridView).Type)
{
case GridType.Buy:
graphics.DrawString(s[2], grid.GroupHeaderFont, brush3, grid.Columns[0].Width + grid.Columns[1].Width + grid.Columns[2].Width - stringSize.Width - 5, rowBounds.Bottom - 18);
break;
case GridType.Sell:
graphics.DrawString(s[2], grid.GroupHeaderFont, brush3, rowBounds.Left + rowHeadersWidth - grid.HorizontalScrollingOffset + 4, rowBounds.Bottom - 18);
break;
}
//draw bottom line
graphics.FillRectangle(brush2, rowBounds.Left + rowHeadersWidth - grid.HorizontalScrollingOffset, rowBounds.Bottom - 2, gridwidth - 1, 1);
// draw right vertical bar
if (grid.CellBorderStyle == DataGridViewCellBorderStyle.SingleVertical || grid.CellBorderStyle == DataGridViewCellBorderStyle.Single)
{
graphics.FillRectangle(brush2, rowBounds.Left + rowHeadersWidth - grid.HorizontalScrollingOffset + gridwidth - 1, rowBounds.Top, 1, rowBounds.Height);
}
if (group.Collapsed)
{
switch (((OfferBookGrid)this.DataGridView).Type)
{
case GridType.Buy:
if (grid.ExpandIcon != null)
{
graphics.DrawImage(grid.ExpandIcon, rowBounds.Left + rowHeadersWidth - grid.HorizontalScrollingOffset + 4, rowBounds.Bottom - 18, 11, 11);
}
break;
case GridType.Sell:
if (grid.ExpandIcon != null)
{
//graphics.DrawImage(grid.ExpandIcon, grid.Columns[0].Width + grid.Columns[1].Width + grid.Columns[2].Width - 15, rowBounds.Bottom - 18, 11, 11);
graphics.DrawImage(grid.ExpandIcon, rowBounds.Right - 15, rowBounds.Bottom - 18, 11, 11);
}
break;
}
}
else
{
//if (grid.CollapseIcon != null)
// Graphics.DrawImage(grid.CollapseIcon, rowBounds.Left + rowHeadersWidth - grid.HorizontalScrollingOffset + 4, rowBounds.Bottom - 18, 11, 11);
switch (((OfferBookGrid)this.DataGridView).Type)
{
case GridType.Buy:
if (grid.ExpandIcon != null)
{
graphics.DrawImage(grid.CollapseIcon, rowBounds.Left + rowHeadersWidth - grid.HorizontalScrollingOffset + 4, rowBounds.Bottom - 18, 11, 11);
}
break;
case GridType.Sell:
if (grid.ExpandIcon != null)
{
graphics.DrawImage(grid.CollapseIcon, rowBounds.Right - 15, rowBounds.Bottom - 18, 11, 11);
}
break;
}
}
brush.Dispose();
brush2.Dispose();
brush3.Dispose();
}
base.Paint(graphics, clipBounds, rowBounds, rowIndex, rowState, isFirstDisplayedRow, isLastVisibleRow);
}
