/// <summary>
/// Constructor
/// </summary>
/// <param name="p_StartRow"></param>
/// <param name="p_StartCol"></param>
/// <param name="p_EndRow"></param>
/// <param name="p_EndCol"></param>
public Range(int p_StartRow, int p_StartCol, int p_EndRow, int p_EndCol)
{
m_Start = new Position(p_StartRow, p_StartCol);
m_End = new Position(p_EndRow, p_EndCol);
Normalize();
}
public static Range From(Position startPosition, int rowCount, int colCount)
{
var range = new Range(startPosition);
range.RowsCount = rowCount;
range.ColumnsCount = colCount;
return range;
}
public Range? GetFirstIntersectedRange(Position pos)
{
var result = base.QueryFirst(pos);
if (result == null)
return null;
return result;
}
/// <summary>
/// Move the current range to the specified position, leaving the current ColumnsCount and RowsCount
/// </summary>
/// <param name="p_StartPosition"></param>
public void MoveTo(Position p_StartPosition)
{
int l_ColCount = ColumnsCount;
int l_RowCount = RowsCount;
m_Start = p_StartPosition;
RowsCount = l_RowCount;
ColumnsCount = l_ColCount;
}
private Range(Position p_Start, Position p_End, bool p_bCheck)
{
m_Start = p_Start;
m_End = p_End;
if (p_bCheck)
Normalize();
}
/// <summary>
/// This method converts a Position to the real range of the cell. This is usefull when RowSpan or ColumnSpan is greater than 1.
/// For example suppose to have at grid[0,0] a cell with ColumnSpan equal to 2. If you call this method with the position 0,0 returns 0,0-0,1 and if you call this method with 0,1 return again 0,0-0,1.
/// </summary>
/// <param name="pPosition"></param>
/// <returns></returns>
public override Range PositionToCellRange(Position pPosition)
{
if (pPosition.IsEmpty())
return Range.Empty;
Cells.ICell l_Cell = this[pPosition.Row, pPosition.Column];
if (l_Cell == null)
return Range.Empty;
else
return l_Cell.Range;
}
private void EnsureNoSpannedCellsExist(int row, int col, Cells.ICell p_cell)
{
var spanRange = new Range(row, col, row + p_cell.RowSpan - 1, col + p_cell.ColumnSpan - 1);
var ranges = spannedCellReferences.SpannedRangesCollection.GetRanges(
spanRange);
if (ranges.Count == 0)
return;
var start = new Position(row, col);
foreach (var range in ranges)
{
if (start.Equals(range.Start) == true)
continue;
Cells.ICell existingSpannedCell = this[range.Start];
if (existingSpannedCell == null)
throw new ArgumentException("internal error. please report this bug to developers");
throw new OverlappingCellException(string.Format(
"Given cell at position ({0}, {1}), " +
"intersects with another cell " +
"at position ({2}, {3}) '{4}'",
row, col,
existingSpannedCell.Row.Index,
existingSpannedCell.Column.Index,
existingSpannedCell.DisplayText));
}
}
/// <summary>
/// Check if a cell exists in spanned cells.
/// If yes, returns. If no, returns null
/// </summary>
private Cells.ICell GetSpannedCell(Position pos)
{
var range = spannedCellReferences.SpannedRangesCollection.GetFirstIntersectedRange(pos);
if (range == null)
return null;
Position cellPos = range.Value.Start;
Cells.ICell cell = DirectGetCell(cellPos);
if (cell == null)
throw new ArgumentException(string.Format(
"Invalid grid state. Grid should contain a spanned cell at position {0}, " +
" but apparently it does not!", cellPos));
return cell;
}
private Cells.ICell DirectGetCell(Position position)
{
if (IsInGrid(position) == false)
return null;
if (OptimizeMode == CellOptimizeMode.ForRows)
{
GridRow row = Rows[position.Row];
if (row == null)
return null;
return row[Columns[position.Column] as GridColumn];
}
else if (OptimizeMode == CellOptimizeMode.ForColumns)
{
GridColumn col = Columns[position.Column] as GridColumn;
if (col == null)
return null;
return col[Rows[position.Row]];
}
else
throw new SourceGridException("Invalid OptimizeMode");
}
private void DirectSetCell(Position position, Cells.ICell cell)
{
if (OptimizeMode == CellOptimizeMode.ForRows)
{
GridRow row = Rows[position.Row];
if (position.Column >= Columns.Count)
throw new ArgumentException(string.Format(
"Grid has only {0} columns, you tried to insert cell into position {1}." +
"You should probably call Redim on grid to increase it's column size",
Columns.Count, position.ToString()));
row[Columns[position.Column] as GridColumn] = cell;
}
else if (OptimizeMode == CellOptimizeMode.ForColumns)
{
GridColumn col = Columns[position.Column] as GridColumn;
col[Rows[position.Row]] = cell;
}
else
throw new SourceGridException("Invalid OptimizeMode");
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="pGridVirtual"></param>
/// <param name="pPosition"></param>
public CellContext(GridVirtual pGridVirtual, Position pPosition)
{
Position = pPosition;
Grid = pGridVirtual;
Cell = Grid.GetCell(Position);
}
/// <summary>
/// Fired when the cell in the drag events change. For internal use only.
/// </summary>
/// <param name="cell"></param>
/// <param name="pDragEventArgs"></param>
public virtual void ChangeDragCell(CellContext cell, DragEventArgs pDragEventArgs)
{
if (cell.Position != mDragCellPosition)
{
if (mDragCellPosition.IsEmpty() == false)
Controller.OnDragLeave(new CellContext(this, mDragCellPosition, GetCell(mDragCellPosition)), pDragEventArgs);
if (cell.Position.IsEmpty() == false)
Controller.OnDragEnter(cell, pDragEventArgs);
mDragCellPosition = cell.Position;
}
}
int FindFirstFocusableRowInDownDirection(int TopRow)
{
for (int k = TopRow; k < Rows.Count; k++)
{
Position newPosition = new Position(k, Selection.ActivePosition.Column);
if (Selection.CanReceiveFocus(newPosition)) return k;
}
return -1;
}
public override void CustomScrollPageDown()
{
bool NeedActualScrolling=false;
int NewProposedTopRow=0;
int NewProposedFocusedRow=0;
Range rngFocusedCell = PositionToCellRange(Selection.ActivePosition);
//if there is no selection here (ActiveRow is undefined),
//put selection in the first possible cell
//confusing NAMING: Rows.IsRowVisible -> Rows.NotHidden - because it is not hidden,
// may be confused with visible on screen within visible page
if (rngFocusedCell.IsEmpty())
{
Selection.MoveActiveCell(1, 0);
return;
}
List<int> rows = GetVisibleRows(false);
if (rows.Count <= ActualFixedRows + 1)
{
Selection.MoveActiveCell(1, 0);
return;
};
int firstVisibleRow = rows[ActualFixedRows];
int lastVisibleRow = rows[rows.Count - 1];
// AlanP: Sep 2013 We need to know if SHIFT is pressed
bool shiftPressed = Control.ModifierKeys == Keys.Shift;
if (IsThisRowVisibleOnScreen(rngFocusedCell.Start.Row))
{ //focus is on the screen
int BottommostFocusableRow = GetBottommostFocusableRowFromRange(firstVisibleRow, lastVisibleRow);
if (rngFocusedCell.ContainsRow(BottommostFocusableRow))
{ //need actual scrolling, ie. displaying new page
int FindFirstFocusableRow = FindFirstFocusableRowInDownDirection(lastVisibleRow);
if (FindFirstFocusableRow != -1)
{
NeedActualScrolling = true;
NewProposedTopRow = lastVisibleRow;
int NewProposedBottomRow = GetBottomVisibleRowFromTopRow(NewProposedTopRow);
NewProposedFocusedRow = GetBottommostFocusableRowFromRange(NewProposedTopRow, NewProposedBottomRow);
if (NewProposedFocusedRow == -1)
{//There is no Focusable Row in the proposed page, so there need to be new page and focus found
NewProposedFocusedRow = FindFirstFocusableRowInDownDirection(NewProposedBottomRow);
NewProposedTopRow = GetTopVisibleRowFromBottomRow(NewProposedFocusedRow);
}
}
else
{ //no focusable cells below -
//in this case we might scroll down page, leaving focus unchanged
//or move focus to the side like in arrow down handler
//this is only temporary
//MICK(23)
Selection.MoveActiveCell(1, 0);
return;
}
}
else
{ //this time only move focus, wihout actual scrolling
Position newPosition = new Position(BottommostFocusableRow, Selection.ActivePosition.Column);
// AlanP: Sep 2013 We inhibit change events if SHIFT is pressed because we still have more calls to do
Selection.Focus(newPosition, true, shiftPressed);
}
}
else
{// focus is not on the screen, so actual scrolling is done always
NeedActualScrolling = true;
NewProposedTopRow = rngFocusedCell.Start.Row;
int NewProposedBottomRow = GetBottomVisibleRowFromTopRow(NewProposedTopRow);
NewProposedFocusedRow = GetBottommostFocusableRowFromRange(NewProposedTopRow, NewProposedBottomRow);
}
if (NeedActualScrolling)
{
int NewTopRow=0;
int NewFocusedRow=0;
GetValidScrollDown(NewProposedTopRow, NewProposedFocusedRow, out NewTopRow, out NewFocusedRow);
NewTopRow = ExtendTopRowByHiddenRows(NewTopRow);
base.CustomScrollPageToLine(NewTopRow - ActualFixedRows);
if (rngFocusedCell.ContainsRow(NewFocusedRow) == false)
{
Position newPosition = new Position(NewFocusedRow, Selection.ActivePosition.Column);
// AlanP: Sep 2013 We inhibit change events if SHIFT is pressed because we still have more calls to do
Selection.Focus(newPosition, true, shiftPressed);
}
}
}
public override void CustomScrollPageUp()
{
bool NeedActualScrolling=false;
int NewProposedTopRow=0;
int NewProposedFocusedRow=0;
//confusing NAMING: ActivePosition -> FocusedPosition - it would be better
int FocusedRow = Selection.ActivePosition.Row;
//TODO: if there is no selection here (ActiveRow is undefined),
//put selection in the first possible cell
//confusing NAMING: Rows.IsRowVisible -> Rows.NotHidden - because it is not hidden,
// may be confused with visible on screen within visible page
if (FocusedRow == -1)
{
Selection.MoveActiveCell(-1, 0);
return;
}
List<int> rows = GetVisibleRows(false);
//TODO: if Rows.height<displayheight
if (rows.Count <= ActualFixedRows + 1)
{
Selection.MoveActiveCell(-1, 0);
return;
};
int firstVisibleRow = rows[ActualFixedRows];
int lastVisibleRow = rows[rows.Count - 1];
//another workaround: if (focusedrow==firstVisibleRow)
//if the row above has height larger than displayheight it is also like one row scrolling-
//so workaround is needed like the one above
if (FocusedRow == firstVisibleRow)
if (FocusedRow>ActualFixedRows)
{
int displayHeight = DisplayRectangle.Height;
//Remove the fixed rows from the scrollable area
for (int f = 0; f < ActualFixedRows; f++)
displayHeight -= Rows.GetHeight(f);
if (displayHeight <= Rows.GetHeight(FocusedRow - 1))
{
Selection.MoveActiveCell(-1, 0);
return;
}
}
// AlanP: Sep 2013 We need to know if SHIFT is pressed
bool shiftPressed = Control.ModifierKeys == Keys.Shift;
if (IsThisRowVisibleOnScreen(FocusedRow))
{ //focus is on the screen
int TopmostFocusableRow = GetTopmostFocusableRowFromRange(firstVisibleRow, lastVisibleRow);
if (TopmostFocusableRow == FocusedRow)
{ //need actual scrolling, ie. displaying new page
int FindFirstFocusableRow = FindFirstFocusableRowInUpDirection(firstVisibleRow);
if (FindFirstFocusableRow != -1)
{
NeedActualScrolling = true;
int NewProposedBottomRow = firstVisibleRow;
NewProposedTopRow = GetTopVisibleRowFromBottomRow(NewProposedBottomRow);
NewProposedFocusedRow = GetTopmostFocusableRowFromRange(NewProposedTopRow, NewProposedBottomRow);
if (NewProposedFocusedRow == -1)
{//There is no Focusable Row in the proposed page, so there need to be new page and focus found
NewProposedFocusedRow = FindFirstFocusableRowInUpDirection(NewProposedTopRow);
NewProposedTopRow = NewProposedFocusedRow;
}
}
else
{ //no focusable cells below -
//in this case we might scroll down page, leaving focus unchanged
//or move focus to the side like in arrow down handler
//this is only temporary
//MICK(24)
Selection.MoveActiveCell(-1, 0);
return;
}
}
else
{ //this time only move focus, wihout actual scrolling
Position newPosition = new Position(TopmostFocusableRow, Selection.ActivePosition.Column);
// AlanP: Sep 2013 We inhibit change events if SHIFT is pressed because we still have more calls to do
Selection.Focus(newPosition, true, shiftPressed);
}
}
else
{// focus is not on the screen, so actual scrolling is done always
NeedActualScrolling = true;
int NewProposedBottomRow = FocusedRow;
NewProposedTopRow = GetTopVisibleRowFromBottomRow(NewProposedBottomRow);
NewProposedFocusedRow = GetTopmostFocusableRowFromRange(NewProposedTopRow, NewProposedBottomRow);
//NewProposedTopRow = FocusedRow;
//NewProposedFocusedRow = GetBottomVisibleRowFromTopRow(NewProposedTopRow);
}
if (NeedActualScrolling)
{
int NewTopRow=0;
int NewFocusedRow=0;
GetValidScrollUp(NewProposedTopRow, NewProposedFocusedRow, out NewTopRow, out NewFocusedRow);
NewTopRow = ExtendTopRowByHiddenRows(NewTopRow);
base.CustomScrollPageToLine(NewTopRow - ActualFixedRows);
if (NewFocusedRow != FocusedRow)
{
Position newPosition = new Position(NewFocusedRow, Selection.ActivePosition.Column);
// AlanP: Sep 2013 We inhibit change events if SHIFT is pressed because we still have more calls to do
Selection.Focus(newPosition, true, shiftPressed);
}
}
}
/// <summary>
/// This method converts a Position to the real range of the cell. This is usefull when RowSpan or ColumnSpan is greater than 1.
/// For example suppose to have at grid[0,0] a cell with ColumnSpan equal to 2. If you call this method with the position 0,0 returns 0,0-0,1 and if you call this method with 0,1 return again 0,0-0,1.
/// </summary>
/// <param name="pPosition"></param>
/// <returns></returns>
public virtual Range PositionToCellRange(Position pPosition)
{
if (pPosition.IsEmpty())
return Range.Empty;
ICellVirtual l_Cell = this.GetCell(pPosition.Row, pPosition.Column);
if (l_Cell == null)
return Range.Empty;
else
return new Range(pPosition);
//return new Range(pPosition);
}
int FindFirstFocusableRowInUpDirection(int BottomRow)
{
for (int k = BottomRow; k > ActualFixedRows; k--)
{
Position newPosition = new Position(k, Selection.ActivePosition.Column);
if (Selection.CanReceiveFocus(newPosition)) return k;
}
return -1;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="pGridVirtual"></param>
/// <param name="pPosition"></param>
/// <param name="pCell"></param>
public CellContext(GridVirtual pGridVirtual, Position pPosition, Cells.ICellVirtual pCell)
{
Position = pPosition;
Cell = pCell;
Grid = pGridVirtual;
}
int GetTopmostFocusableRowFromRange(int firstRow, int lastRow)
{
for (int k = firstRow; k <= lastRow; k++)
{
Position newPosition = new Position(k, Selection.ActivePosition.Column);
if (Selection.CanReceiveFocus(newPosition)) return k;
}
return -1;
}
/// <summary>
/// Set the specified cell int he specified position. This method calls SetCell(int p_iRow, int p_iCol, Cells.ICellVirtual p_Cell)
/// </summary>
/// <param name="p_Position"></param>
/// <param name="p_Cell"></param>
public void SetCell(Position p_Position, Cells.ICellVirtual p_Cell)
{
SetCell(p_Position.Row, p_Position.Column, p_Cell);
}
/// <summary>
/// Indicates if the specified cell is visible.
/// </summary>
/// <param name="position"></param>
/// <param name="partial">True to returns also partial visible cells</param>
/// <returns></returns>
public bool IsCellVisible(Position position, bool partial)
{
Point scrollPosition;
return !(GetScrollPositionToShowCell(position, partial, out scrollPosition));
}
private bool IsInGrid(Position position)
{
if (position.Column < 0)
return false;
if (position.Row < 0 )
return false;
if (position.Column >= this.Columns.Count)
return false;
if (position.Row >= this.Rows.Count)
return false;
return true;
}
///// <summary>
///// Indicates if the specified range is visible
///// </summary>
///// <param name="range"></param>
///// <param name="partial">True to return also partial visible cells</param>
///// <returns></returns>
//public bool IsRangeVisible(Range range, bool partial)
//{
// List<int> rows = GetVisibleRows(partial);
// List<int> columns = GetVisibleColumns(partial);
// if (rows.Count == 0 || columns.Count == 0)
// return false;
// //All the fixed rows are considered to be visible
// bool isRowVisible = false;
// if (range.Start.Row < FixedRows)
// isRowVisible = true;
// else if (range.Start.Row <= rows[rows.Count - 1] &&
// range.End.Row >= rows[0])
// isRowVisible = true;
// bool isColVisible = false;
// if (range.Start.Column < FixedColumns)
// isColVisible = true;
// else if (range.Start.Column <= columns[columns.Count - 1] &&
// range.End.Column >= columns[0])
// isColVisible = true;
// return isColVisible && isRowVisible;
//}
/// <summary>
/// Return the scroll position that must be set to show a specific cell.
/// </summary>
/// <param name="position"></param>
/// <param name="partial">True to consider also partial visible cells</param>
/// <param name="newScrollPosition"></param>
/// <returns>Return false if the cell is already visible, return true is the cell is not currently visible.</returns>
protected virtual bool GetScrollPositionToShowCell(Position position, bool partial, out Point newScrollPosition)
{
Rectangle displayRectangle = DisplayRectangle;
List<int> rows = GetVisibleRows(partial);
List<int> columns = GetVisibleColumns(partial);
if (rows.Contains(position.Row) && columns.Contains(position.Column))
{
newScrollPosition = CustomScrollPosition;
return false;
}
else
{
CellPositionType posType = GetPositionType(position);
bool isFixedTop = false;
if (posType == CellPositionType.FixedTop || posType == CellPositionType.FixedTopLeft)
isFixedTop = true;
bool isFixedLeft = false;
if (posType == CellPositionType.FixedLeft || posType == CellPositionType.FixedTopLeft)
isFixedLeft = true;
int x;
if (columns.Contains(position.Column)) //Is x visible
{
x = CustomScrollPosition.X;
}
else
{
if (isFixedLeft)
x = 0;
else
x = position.Column - FixedColumns;
//Check if the scrollable positioin if not outside the valid area
int maxX = GetScrollColumns(displayRectangle.Width);
if (x > maxX)
x = maxX;
}
int y;
if (rows.Contains(position.Row)) //Is y visible
{
y = CustomScrollPosition.Y;
y = ExtendTopRowByHiddenRows(y);
}
else
{
//MICK(15): add direction dependent procedure of finding y (and x should be too).
//It means that when you go from bottom to top, the selected item will be at top,
// (this already happens, so this part is not changed)
// when you go from top to bottom, the selected item will be at bottom,
// y (and x) value is adjusted accordingly
if (CustomScrollPosition.Y + ActualFixedRows > position.Row)
{
//MICK(16): direction bottom to top
if (isFixedTop)
y = 0;
else
y = position.Row - FixedRows;
//Check if the scrollable positioin if not outside the valid area
int maxY = GetScrollRows(displayRectangle.Height);
if (y > maxY)
y = maxY;
//MICK(21)
y=ExtendTopRowByHiddenRows(y);
}
else
{
//MICK(17): direction from top to bottom
y = GetTopVisibleRowFromBottomRow(position.Row) - ActualFixedRows;
y = ExtendTopRowByHiddenRows(y);
}
}
newScrollPosition = new Point(x, y);
return true;
}
}
public Cells.ICell this[Position position]
{
get
{
Cells.ICell cell = DirectGetCell(position);
if ( cell != null )
return cell;
return GetSpannedCell(position);
}
set
{
InsertCell(position.Row, position.Column, value);
}
}
/// <summary>
/// Scroll the view to show the cell passed. Ensure that if the cell if invisible or partial visible it will be totally visible
/// </summary>
/// <param name="p_Position"></param>
/// <param name="ignorePartial">true to ignore and consider already visible partial visible cells</param>
/// <returns>Returns true if the Cell passed was already visible, otherwise false</returns>
public bool ShowCell(Position p_Position, bool ignorePartial)
{
Point l_newCustomScrollPosition;
if (GetScrollPositionToShowCell(p_Position, ignorePartial, out l_newCustomScrollPosition))
{
CustomScrollPosition = l_newCustomScrollPosition;
//il problema di refresh si verifica solo in caso di FixedRows e ColumnsCount maggiori di 0
if (FixedRows > 0 || FixedColumns > 0)
Invalidate();
return false;
}
return true;
}
/// <summary>
/// Removes a spanned cell internal reference.
/// This effectively removes any data in spannedCellReferences collection
/// </summary>
/// <param name="pos"></param>
private void RemoveSpannedCell(Position pos)
{
var range = spannedCellReferences.SpannedRangesCollection.GetFirstIntersectedRange(pos);
if (range == null )
return;
spannedCellReferences.SpannedRangesCollection.Remove(range.Value);
}
/// <summary>
/// Force a cell to redraw.
/// </summary>
/// <param name="position"></param>
public virtual void InvalidateCell(Position position)
{
InvalidateRange(new Range(position));
}
/// <summary>
/// This method converts a Position to the real range of the cell. This is usefull when RowSpan or ColumnSpan is greater than 1.
/// </summary>
/// <returns></returns>
public override Range RangeToCellRange(Range range)
{
int x = range.Start.Column;
int x1 = range.End.Column;
int y = range.Start.Row;
int y1 = range.End.Row;
for (int x2 = range.Start.Column; x2 <= range.End.Column; x2++)
{
for (int y2 = range.Start.Row; y2 <= range.End.Row; y2++)
{
var p = new Position(y2, x2);
Range range2 = PositionToCellRange(p);
if (range2.IsEmpty())
range2 = new Range(p, p);
if (range2.Start.Column < x)
x = range2.Start.Column;
if (range2.End.Column > x1)
x1 = range2.End.Column;
if (range2.Start.Row < y)
y = range2.Start.Row;
if (range2.End.Row > y1)
y1 = range2.End.Row;
}
}
return new Range(y, x, y1, x1);
}
/// <summary>
/// This method converts a Position to the real start position of cell. This is usefull when RowSpan or ColumnSPan is greater than 1.
/// For example suppose to have at grid[0,0] a cell with ColumnSpan equal to 2. If you call this method with the position 0,0 returns 0,0 and if you call this method with 0,1 return again 0,0.
/// Get the real position for the specified position. For example when p_Position is a merged cell this method returns the starting position of the merged cells.
/// Usually this method returns the same cell specified as parameter. This method is used for processing arrow keys, to find a valid cell when the focus is in a merged cell.
/// For this class returns always p_Position.
/// </summary>
/// <param name="p_Position"></param>
/// <returns></returns>
public Position PositionToStartPosition(Position p_Position)
{
return PositionToCellRange(p_Position).Start;
}
/// <summary>
/// Force a cell to redraw. If ColSpan or RowSpan is greater than 0 this function invalidate the complete range with InvalidateRange
/// </summary>
/// <param name="p_Position"></param>
public override void InvalidateCell(Position p_Position)
{
Cells.ICell cell = this[p_Position.Row, p_Position.Column];
if (cell == null || (cell.Range.ColumnsCount == 1 && cell.Range.RowsCount == 1))
base.InvalidateCell(p_Position);
else
InvalidateRange(cell.Range);
}
public void StartEdit(SourceGrid.Position Position)
{
SourceGrid.CellContext _Context = new SourceGrid.CellContext(grid1, Position, grid1[Position.Row, Position.Column]);
_Context.StartEdit( );
}
