private void DrawColumnDrag(PaintEventArgs e)
{
if (_draggingCell != null)
{
var text = "";
int offsetX = 0;
int offsetY = 0;
QueryItemText?.Invoke(_draggingCell.RowIndex.Value, _columns.IndexOf(_draggingCell.Column), out text);
QueryItemTextAdvanced?.Invoke(_draggingCell.RowIndex.Value, _draggingCell.Column, out text, ref offsetX, ref offsetY);
Color bgColor = ColumnHeaderBackgroundColor;
QueryItemBkColor?.Invoke(_draggingCell.RowIndex.Value, _draggingCell.Column, ref bgColor);
int x1 = _currentX.Value - (_draggingCell.Column.Width.Value / 2);
int y1 = _currentY.Value - (CellHeight / 2);
int x2 = x1 + _draggingCell.Column.Width.Value;
int y2 = y1 + CellHeight;
sBrush = new SolidBrush(bgColor);
e.Graphics.FillRectangle(sBrush, x1, y1, x2 - x1, y2 - y1);
sBrush = new SolidBrush(ColumnHeaderFontColor);
e.Graphics.DrawString(text, ColumnHeaderFont, sBrush, (PointF)(new Point(x1 + CellWidthPadding + offsetX, y1 + CellHeightPadding + offsetY)));
}
}
private void DrawData(PaintEventArgs e, List <ListColumn> visibleColumns)
{
// Prevent exceptions with small windows
if (visibleColumns.Count == 0)
{
return;
}
if (QueryItemText != null || QueryItemTextAdvanced != null)
{
int startRow = FirstVisibleRow;
int range = Math.Min(LastVisibleRow, ItemCount - 1) - startRow + 1;
sBrush = new SolidBrush(CellFontColor);
int xPadding = CellWidthPadding + 1 - _hBar.Value;
for (int i = 0, f = 0; f < range; i++, f++) // Vertical
{
//f += _lagFrames[i];
int LastVisible = LastVisibleColumnIndex;
for (int j = FirstVisibleColumn; j <= LastVisible; j++) // Horizontal
{
ListColumn col = visibleColumns[j];
string text = "";
int strOffsetX = 0;
int strOffsetY = 0;
Point point = new Point(col.Left.Value + xPadding, RowsToPixels(i) + CellHeightPadding);
Bitmap image = null;
int bitmapOffsetX = 0;
int bitmapOffsetY = 0;
QueryItemIcon?.Invoke(f + startRow, visibleColumns[j], ref image, ref bitmapOffsetX, ref bitmapOffsetY);
if (image != null)
{
e.Graphics.DrawImage(image, new Point(point.X + bitmapOffsetX, point.Y + bitmapOffsetY + CellHeightPadding));
}
QueryItemText?.Invoke(f + startRow, _columns.IndexOf(visibleColumns[j]), out text);
QueryItemTextAdvanced?.Invoke(f + startRow, visibleColumns[j], out text, ref strOffsetX, ref strOffsetY);
bool rePrep = false;
if (_selectedItems.Contains(new Cell {
Column = visibleColumns[j], RowIndex = f + startRow
}))
{
sBrush = new SolidBrush(InvertColor(CellBackgroundHighlightColor));
rePrep = true;
}
if (!string.IsNullOrWhiteSpace(text))
{
ResizeTextToFit(ref text, col.Width.Value, CellFont);
e.Graphics.DrawString(text, CellFont, sBrush, (PointF)(new Point(point.X + strOffsetX, point.Y + strOffsetY)));
}
if (rePrep)
{
sBrush = new SolidBrush(CellFontColor);
}
}
}
}
}