public override int GetRowOffset(GridColumnHandler column, int rowIndex)
{
if (object.ReferenceEquals(column.Widget, this.Widget.Columns[0]))
{
return(INDENT_WIDTH + controller.LevelAtRow(rowIndex) * INDENT_WIDTH);
}
else
{
return(0);
}
}
public override bool CellMouseClick(GridColumnHandler column, swf.MouseEventArgs e, int rowIndex)
{
if (rowIndex >= 0 && object.ReferenceEquals(column.Widget, this.Widget.Columns[0]))
{
var offset = INDENT_WIDTH + controller.LevelAtRow(rowIndex) * INDENT_WIDTH;
if (e.X < offset && e.X >= offset - INDENT_WIDTH)
{
if (controller.IsExpanded(rowIndex))
{
controller.CollapseRow(rowIndex);
}
else
{
controller.ExpandRow(rowIndex);
}
return(true);
}
}
return(false);
}
public override void Paint(GridColumnHandler column, sd.Graphics graphics, sd.Rectangle clipBounds, sd.Rectangle cellBounds, int rowIndex, swf.DataGridViewElementStates cellState, object value, object formattedValue, string errorText, swf.DataGridViewCellStyle cellStyle, swf.DataGridViewAdvancedBorderStyle advancedBorderStyle, ref swf.DataGridViewPaintParts paintParts)
{
if (object.ReferenceEquals(column.Widget, this.Widget.Columns[0]))
{
// paint the background
if (paintParts.HasFlag(swf.DataGridViewPaintParts.Background))
{
sd.Brush brush;
if (cellState.HasFlag(swf.DataGridViewElementStates.Selected))
{
brush = new sd.SolidBrush(cellStyle.SelectionBackColor);
}
else
{
brush = new sd.SolidBrush(cellStyle.BackColor);
}
graphics.FillRectangle(brush, cellBounds);
paintParts &= ~swf.DataGridViewPaintParts.Background;
}
var node = controller.GetNodeAtRow(rowIndex);
var treeRect = cellBounds;
treeRect.X += node.Level * INDENT_WIDTH;
treeRect.Width = 16;
if (ClassicStyle && ClassicGridLines)
{
// Draw grid lines - for classic style
using (var linePen = new sd.Pen(sd.SystemBrushes.ControlDark, 1.0f))
{
var lineRect = treeRect;
lineRect.X += 7;
lineRect.Width = 10;
linePen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
var isFirstSibling = node.IsFirstNode;
var isLastSibling = node.IsLastNode;
if (node.Level == 0)
{
// the Root nodes display their lines differently
if (isFirstSibling && isLastSibling)
{
// only node, both first and last. Just draw horizontal line
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top + cellBounds.Height / 2, lineRect.Right, cellBounds.Top + cellBounds.Height / 2);
}
else if (isLastSibling)
{
// last sibling doesn't draw the line extended below. Paint horizontal then vertical
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top + cellBounds.Height / 2, lineRect.Right, cellBounds.Top + cellBounds.Height / 2);
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top, lineRect.X, cellBounds.Top + cellBounds.Height / 2);
}
else if (isFirstSibling)
{
// first sibling doesn't draw the line extended above. Paint horizontal then vertical
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top + cellBounds.Height / 2, lineRect.Right, cellBounds.Top + cellBounds.Height / 2);
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top + cellBounds.Height / 2, lineRect.X, cellBounds.Bottom);
}
else
{
// normal drawing draws extended from top to bottom. Paint horizontal then vertical
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top + cellBounds.Height / 2, lineRect.Right, cellBounds.Top + cellBounds.Height / 2);
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top, lineRect.X, cellBounds.Bottom);
}
}
else
{
if (isLastSibling)
{
// last sibling doesn't draw the line extended below. Paint horizontal then vertical
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top + cellBounds.Height / 2, lineRect.Right, cellBounds.Top + cellBounds.Height / 2);
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top, lineRect.X, cellBounds.Top + cellBounds.Height / 2);
}
else
{
// normal drawing draws extended from top to bottom. Paint horizontal then vertical
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top + cellBounds.Height / 2, lineRect.Right, cellBounds.Top + cellBounds.Height / 2);
graphics.DrawLine(linePen, lineRect.X, cellBounds.Top, lineRect.X, cellBounds.Bottom);
}
// paint lines of previous levels to the root
int horizontalStop = lineRect.X - INDENT_WIDTH;
var previousNode = node.Parent;
while (previousNode != null)
{
if (!previousNode.IsLastNode)
{
// paint vertical line
graphics.DrawLine(linePen, horizontalStop, lineRect.Top, horizontalStop, lineRect.Bottom);
}
previousNode = previousNode.Parent;
horizontalStop = horizontalStop - INDENT_WIDTH;
}
}
}
}
if (node.Item.Expandable)
{
// draw open/close glyphs
if (swf.Application.RenderWithVisualStyles)
{
EnsureGlyphRenderers();
if (controller.IsExpanded(rowIndex))
{
openRenderer.DrawBackground(graphics, new sd.Rectangle(treeRect.X, treeRect.Y + (treeRect.Height / 2) - 8, 16, 16));
}
else
{
closedRenderer.DrawBackground(graphics, new sd.Rectangle(treeRect.X, treeRect.Y + (treeRect.Height / 2) - 8, 16, 16));
}
}
else
{
// todo: draw +/- manually
var glyphRect = treeRect;
glyphRect.Width = glyphRect.Height = 8;
glyphRect.X += 3;
glyphRect.Y += (treeRect.Height - glyphRect.Height) / 2;
graphics.FillRectangle(sd.SystemBrushes.Window, glyphRect);
graphics.DrawRectangle(sd.SystemPens.ControlDark, glyphRect);
glyphRect.Inflate(-2, -2);
if (!controller.IsExpanded(rowIndex))
{
var midx = glyphRect.X + glyphRect.Width / 2;
graphics.DrawLine(sd.SystemPens.ControlDarkDark, midx, glyphRect.Top, midx, glyphRect.Bottom);
}
var midy = glyphRect.Y + glyphRect.Height / 2;
graphics.DrawLine(sd.SystemPens.ControlDarkDark, glyphRect.Left, midy, glyphRect.Right, midy);
}
}
}
}
public virtual bool CellMouseClick(GridColumnHandler column, swf.MouseEventArgs e, int rowIndex)
{
return(false);
}
public virtual int GetRowOffset(GridColumnHandler column, int rowIndex)
{
return(0);
}
public virtual void Paint(GridColumnHandler column, System.Drawing.Graphics graphics, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle cellBounds, int rowIndex, swf.DataGridViewElementStates cellState, object value, object formattedValue, string errorText, swf.DataGridViewCellStyle cellStyle, swf.DataGridViewAdvancedBorderStyle advancedBorderStyle, ref swf.DataGridViewPaintParts paintParts)
{
}
