private static Rectangle GetSpannedCellClipBounds(ExDataGridViewTextBoxCell ownerCell, Rectangle cellBounds)
{
DataGridView dataGridView = ownerCell.DataGridView;
Rectangle clipBounds = cellBounds;
//Setting X.
int i = 0;
for (i = ownerCell.ColumnIndex; i < ownerCell.ColumnIndex + ownerCell._columnSpan; i++)
{
DataGridViewColumn columnItem = dataGridView.Columns[i];
if (!columnItem.Visible)
{
continue;
}
if (columnItem.Frozen || i > dataGridView.FirstDisplayedScrollingColumnIndex)
{
clipBounds.Width += columnItem.Width;
break;
}
if (i == dataGridView.FirstDisplayedScrollingColumnIndex)
{
clipBounds.X += dataGridView.FirstDisplayedScrollingColumnHiddenWidth;
clipBounds.Width += columnItem.Width - dataGridView.FirstDisplayedScrollingColumnHiddenWidth;
break;
}
clipBounds.X += columnItem.Width;
}
//Setting Y.
for (i = ownerCell.RowIndex; i < ownerCell.RowIndex + ownerCell._rowSpan; i++)
{
DataGridViewRow rowItem = dataGridView.Rows[i];
if (!rowItem.Visible)
{
continue;
}
if (rowItem.Frozen || i >= dataGridView.FirstDisplayedScrollingRowIndex)
{
clipBounds.Height += dataGridView.Rows[i].Height;
break;
}
clipBounds.Y += rowItem.Height;
}
//exclude borders.
if (dataGridView.BorderStyle != BorderStyle.None)
{
Rectangle clientRectangle = dataGridView.ClientRectangle;
clientRectangle.Width--;
clientRectangle.Height--;
clipBounds.Intersect(clientRectangle);
}
return(clipBounds);
}
public override Rectangle PositionEditingPanel(Rectangle cellBounds, Rectangle cellClip, DataGridViewCellStyle cellStyle, bool singleVerticalBorderAdded, bool singleHorizontalBorderAdded, bool isFirstDisplayedColumn, bool isFirstDisplayedRow)
{
if (_ownerCell == null && _columnSpan == 1 && _rowSpan == 1)
{
return(base.PositionEditingPanel(cellBounds, cellClip, cellStyle, singleVerticalBorderAdded, singleHorizontalBorderAdded, isFirstDisplayedColumn, isFirstDisplayedRow));
}
int rowIndex = RowIndex;
ExDataGridViewTextBoxCell ownerCell = this;
if (_ownerCell != null)
{
rowIndex = _ownerCell.RowIndex;
cellStyle = _ownerCell.GetInheritedStyle(null, rowIndex, true);
_ownerCell.GetFormattedValue(_ownerCell.Value, rowIndex, ref cellStyle, null, null, DataGridViewDataErrorContexts.Formatting);
IDataGridViewEditingControl editingControl = this.DataGridView.EditingControl as IDataGridViewEditingControl;
if (editingControl != null)
{
editingControl.ApplyCellStyleToEditingControl(cellStyle);
Control editingPanel = this.DataGridView.EditingControl.Parent;
if (editingPanel != null)
{
editingPanel.BackColor = cellStyle.BackColor;
}
}
ownerCell = _ownerCell;
}
cellBounds = GetSpannedCellBoundsFromChildCellBounds(this, cellBounds);
cellClip = GetSpannedCellClipBounds(ownerCell, cellBounds);
return(base.PositionEditingPanel(cellBounds, cellClip, cellStyle, singleVerticalBorderAdded, singleHorizontalBorderAdded, isFirstDisplayedColumn, isFirstDisplayedRow));
}
private void SetSpan(int columnSpan, int rowSpan)
{
int prevColumnSpan = _columnSpan;
int prevRowSpan = _rowSpan;
_columnSpan = columnSpan;
_rowSpan = rowSpan;
int rowIndex = 0; int columnIndex = 0;
if (this.DataGridView != null)
{
#region clearing
for (rowIndex = this.RowIndex; rowIndex < this.RowIndex + prevRowSpan; rowIndex++)
{
for (columnIndex = this.ColumnIndex; columnIndex < this.ColumnIndex + prevColumnSpan; columnIndex++)
{
ExDataGridViewTextBoxCell cell = this.DataGridView[columnIndex, rowIndex] as ExDataGridViewTextBoxCell;
if (cell != null)
{
cell.OwnerCell = null;
}
}
}
#endregion
#region setting
for (rowIndex = this.RowIndex; rowIndex < this.RowIndex + _rowSpan; rowIndex++)
{
for (columnIndex = this.ColumnIndex; columnIndex < this.ColumnIndex + _columnSpan; columnIndex++)
{
ExDataGridViewTextBoxCell cell = this.DataGridView[columnIndex, rowIndex] as ExDataGridViewTextBoxCell;
if (cell != null)
{
cell.OwnerCell = this;
}
}
}
OwnerCell = null;
#endregion
this.DataGridView.Invalidate();
}
}
protected override Rectangle BorderWidths(DataGridViewAdvancedBorderStyle advancedBorderStyle)
{
if (_ownerCell == null &&
_columnSpan == 1 && _rowSpan == 1)
{
return(base.BorderWidths(advancedBorderStyle));
}
if (_ownerCell != null)
{
return(_ownerCell.BorderWidths(advancedBorderStyle));
}
Rectangle leftTop = base.BorderWidths(advancedBorderStyle);
ExDataGridViewTextBoxCell rightBottomCell = this.DataGridView[this.ColumnIndex + ColumnSpan - 1, this.RowIndex + RowSpan - 1] as ExDataGridViewTextBoxCell;
Rectangle rightBottom = rightBottomCell != null?rightBottomCell.InternalBorderWidths(advancedBorderStyle) : leftTop;
return(new Rectangle(leftTop.X, leftTop.Y, rightBottom.Width, rightBottom.Height));
}
private static Rectangle GetSpannedCellBoundsFromChildCellBounds(ExDataGridViewTextBoxCell childCell, Rectangle childCellBounds)
{
DataGridView dataGridView = childCell.DataGridView;
ExDataGridViewTextBoxCell ownerCell = childCell.OwnerCell == null ? childCell : childCell.OwnerCell;
Rectangle spannedCellBounds = childCellBounds;
int i = 0;
int firstVisibleColumnIndex = 0;
for (firstVisibleColumnIndex = ownerCell.ColumnIndex; firstVisibleColumnIndex < ownerCell.ColumnIndex + ownerCell.ColumnSpan; firstVisibleColumnIndex++)
{
if (dataGridView.Columns[firstVisibleColumnIndex].Visible)
{
break;
}
}
if (dataGridView.Columns[firstVisibleColumnIndex].Frozen)
{
spannedCellBounds.X = dataGridView.GetColumnDisplayRectangle(firstVisibleColumnIndex, false).X;
}
else
{
for (i = firstVisibleColumnIndex; i < childCell.ColumnIndex; i++)
{
DataGridViewColumn columnItem = dataGridView.Columns[i];
if (columnItem.Visible)
{
spannedCellBounds.X += columnItem.Width;
}
}
}
//
int firstVisibleRowIndex = 0;
for (firstVisibleRowIndex = ownerCell.RowIndex; firstVisibleRowIndex < ownerCell.RowIndex + ownerCell.RowSpan; firstVisibleRowIndex++)
{
if (dataGridView.Rows[firstVisibleRowIndex].Visible)
{
break;
}
}
if (dataGridView.Rows[firstVisibleRowIndex].Frozen)
{
spannedCellBounds.Y = dataGridView.GetRowDisplayRectangle(firstVisibleRowIndex, false).Y;
}
else
{
for (i = firstVisibleRowIndex; i < childCell.RowIndex; i++)
{
DataGridViewRow rowItem = dataGridView.Rows[i];
if (rowItem.Visible)
{
spannedCellBounds.Y += rowItem.Height;
}
}
}
for (i = ownerCell.ColumnIndex; i < ownerCell.ColumnSpan + ownerCell.ColumnSpan; i++)
{
DataGridViewColumn columnItem = dataGridView.Columns[i];
if (columnItem.Visible)
{
spannedCellBounds.Width += columnItem.Width;
}
}
for (i = ownerCell.RowIndex; i < ownerCell.RowIndex + ownerCell.RowSpan; i++)
{
DataGridViewRow rowItem = dataGridView.Rows[i];
if (rowItem.Visible)
{
spannedCellBounds.Height += rowItem.Height;
}
}
return(spannedCellBounds);
}
protected override void Paint(System.Drawing.Graphics graphics, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
if (_ownerCell != null && _ownerCell.DataGridView == null)
{
_ownerCell = null; //owner cell was removed.
}
if (this.DataGridView == null || (_ownerCell == null && _columnSpan == 1 && _rowSpan == 1))
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
return;
}
ExDataGridViewTextBoxCell ownerCell = this;
int columnIndex = this.ColumnIndex;
int columnSpan = _columnSpan;
int rowSpan = _rowSpan;
if (_ownerCell != null)
{
ownerCell = _ownerCell;
columnIndex = _ownerCell.ColumnIndex;
rowIndex = _ownerCell.RowIndex;
columnSpan = _ownerCell.ColumnSpan;
rowSpan = _ownerCell.RowSpan;
value = _ownerCell.GetValue(rowIndex);
errorText = _ownerCell.GetErrorText(rowIndex);
cellState = _ownerCell.State;
cellStyle = _ownerCell.GetInheritedStyle(null, rowIndex, true);
formattedValue = _ownerCell.GetFormattedValue(value, rowIndex, ref cellStyle, null, null, DataGridViewDataErrorContexts.Display);
}
if (CellsRegionContainsSelectedCell(columnIndex, rowIndex, columnSpan, rowSpan))
{
cellState |= DataGridViewElementStates.Selected;
}
cellBounds = GetSpannedCellBoundsFromChildCellBounds(this, cellBounds);
clipBounds = GetSpannedCellClipBounds(ownerCell, cellBounds);
using (Graphics g = this.DataGridView.CreateGraphics())
{
g.SetClip(clipBounds);
//Paint the content.
ownerCell.InternalPaint(g, clipBounds, cellBounds, rowIndex, cellState,
value, formattedValue, errorText,
cellStyle, advancedBorderStyle,
paintParts & ~DataGridViewPaintParts.Border);
//Paint the borders.
if ((paintParts & DataGridViewPaintParts.Border) != DataGridViewPaintParts.None)
{
ExDataGridViewTextBoxCell leftTopCell = ownerCell;
DataGridViewAdvancedBorderStyle advancedBorderStyle2 = new DataGridViewAdvancedBorderStyle();
advancedBorderStyle2.Left = advancedBorderStyle.Left;
advancedBorderStyle2.Top = advancedBorderStyle.Top;
advancedBorderStyle2.Right = DataGridViewAdvancedCellBorderStyle.None;
advancedBorderStyle2.Bottom = DataGridViewAdvancedCellBorderStyle.None;
leftTopCell.PaintBorder(g, clipBounds, cellBounds, cellStyle, advancedBorderStyle2);
ExDataGridViewTextBoxCell rightBottomCell = DataGridView[columnIndex + columnSpan - 1, rowIndex + rowSpan - 1] as ExDataGridViewTextBoxCell;
if (rightBottomCell == null)
{
rightBottomCell = this;
}
DataGridViewAdvancedBorderStyle advancedBorderStyle3 = new DataGridViewAdvancedBorderStyle();
advancedBorderStyle3.Left = DataGridViewAdvancedCellBorderStyle.None;
advancedBorderStyle3.Top = DataGridViewAdvancedCellBorderStyle.None;
advancedBorderStyle3.Right = advancedBorderStyle.Right;
advancedBorderStyle3.Bottom = advancedBorderStyle.Bottom;
rightBottomCell.PaintBorder(g, clipBounds, cellBounds, cellStyle, advancedBorderStyle3);
}
}
}