/// <summary>
/// perform Resizing column for given index and sets the width
/// </summary>
/// <param name="index"></param>
/// <param name="width"></param>
/// <returns></returns>
/// <remarks></remarks>
private bool ResizingColumn(int index, double width)
{
if (width <= 0)
{
return(false);
}
int columnindex = this.dataGrid.ResolveToGridVisibleColumnIndex(index);
var gridcolumn = this.dataGrid.Columns[columnindex];
var args = new ResizingColumnsEventArgs(this.dataGrid)
{
ColumnIndex = index, Width = width
};
if (this.dataGrid.RaiseResizingColumnsEvent(args))
{
return(false);
}
width = ComputeResizingWidth(gridcolumn, args.Width);
this.dataGrid.VisualContainer.ScrollColumns.SetLineResize(index, ComputeResizingWidth(gridcolumn, width));
if (width != args.Width)
{
return(false);
}
return(true);
}
/// <summary>
/// sets the width for column for given column index
/// </summary>
/// <param name="index"></param>
/// <param name="width"></param>
/// <returns></returns>
/// <remarks></remarks>
private bool SetColumnWidth(int index, double width)
{
int columnindex = this.dataGrid.ResolveToGridVisibleColumnIndex(index);
var gridcolumn = this.dataGrid.Columns[columnindex];
var args = new ResizingColumnsEventArgs(this.dataGrid)
{
ColumnIndex = index, Width = Math.Round(width, 2)
};
if (this.dataGrid.RaiseResizingColumnsEvent(args))
{
return(false);
}
width = args.Width;
this.dataGrid.VisualContainer.ScrollColumns.ResetLineResize();
gridcolumn.Width = width;
return(true);
}
/// <summary>
/// Perfoms MouseUp operation on GridHeaderCellControl
/// </summary>
/// <param name="e">An <see cref="T:System.Windows.Input.MouseButtonEventArgs">MouseButtonEventArgs</see> that contains the event data.</param>
/// <param name="headerCell"></param>
/// <remarks></remarks>
internal void DoActionOnMouseUp(MouseEventArgs e, GridHeaderCellControl headerCell)
{
#if !WPF
PointerPoint pp = e.GetCurrentPoint(this.dataGrid.VisualContainer);
double hScrollChange = 0;
for (int i = 0; i < this.dataGrid.VisualContainer.FrozenColumns; i++)
{
hScrollChange += this.dataGrid.VisualContainer.ColumnWidths[i];
}
var pointerPoint = new Point(pp.Position.X - (dataGrid.VisualContainer.HScrollBar.Value - hScrollChange), pp.Position.Y - dataGrid.VisualContainer.VScrollBar.Value);
double delta = pointerPoint.X - dragLine.Corner;
#else
Point pp = e.GetPosition(this.dataGrid.VisualContainer);
double delta = pp.X - dragLine.Corner;
#endif
var columnIndex = this.dataGrid.ResolveToGridVisibleColumnIndex(dragLine.LineIndex);
double width = Math.Max(0, dragLine.Size + delta);
if (!(columnIndex >= 0 && columnIndex < this.dataGrid.Columns.Count))
{
return;
}
width = ComputeResizingWidth(this.dataGrid.Columns[columnIndex], width);
this.dataGrid.VisualContainer.ScrollColumns.ResetLineResize();
var args = new ResizingColumnsEventArgs(this.dataGrid)
{
ColumnIndex = dragLine.LineIndex, Width = width
};
if (columnIndex >= 0 && !dataGrid.RaiseResizingColumnsEvent(args))
{
this.dataGrid.Columns[columnIndex].IsHidden = (args.Width == 0 || args.Width == 1);
if ((args.Width == 0) || (args.Width == 1))
{
this.dataGrid.Columns[columnIndex].Width = Math.Round(args.Width);
//Reset the extendedwidth when column is in Hidden because of Resizing.
this.dataGrid.Columns[columnIndex].ExtendedWidth = double.NaN;
}
else
{
if (args.Width != this.dataGrid.Columns[columnIndex].ActualWidth && this.dataGrid.Columns[columnIndex].ExtendedWidth > 0)
{
var actualWidth = this.dataGrid.Columns[columnIndex].ActualWidth;
var extendedWidth = this.dataGrid.Columns[columnIndex].ExtendedWidth;
var differenceInExtendedWidth = ((args.Width - actualWidth) < extendedWidth) ? (args.Width - actualWidth) : 0;
this.dataGrid.Columns[columnIndex].ExtendedWidth = (differenceInExtendedWidth > 0) ? (extendedWidth - differenceInExtendedWidth) : double.NaN;
}
if ((this.dataGrid.ResolveToGridVisibleColumnIndex(this.dataGrid.VisualContainer.ScrollColumns.GetVisibleLines().Count) == 1) && this.dataGrid.Columns[columnIndex].Width == args.Width)
{
args.Width += 1;
}
this.dataGrid.Columns[columnIndex].Width = Math.Round(args.Width) == 0 ? 20 : Math.Round(args.Width);
}
}
if ((args.Width == 0 || columnIndex >= 0 && dataGrid.Columns[columnIndex].IsHidden) && dataGrid.AllowResizingHiddenColumns && dataGrid.VisualContainer.ColumnCount == this.dataGrid.ResolveToGridVisibleColumnIndex(dragLine.LineIndex + 1))
{
var headerRow = dataGrid.RowGenerator.Items.FirstOrDefault(row => row.RowIndex == dataGrid.GetHeaderIndex());
var columnBase = headerRow.VisibleColumns.FirstOrDefault(column => column.ColumnIndex == dragLine.LineIndex + 1);
var prevHiddenIndex = columnIndex - 1;
while (prevHiddenIndex > 0 && dataGrid.Columns[prevHiddenIndex].IsHidden)
{
prevHiddenIndex--;
}
if (columnBase != null)
{
var prevColumnHeader = (columnBase.ColumnElement as GridHeaderCellControl);
if (prevHiddenIndex != columnIndex)
{
columnBase = headerRow.VisibleColumns.FirstOrDefault(column => column.ColumnIndex == prevHiddenIndex);
prevColumnHeader = columnBase.ColumnElement as GridHeaderCellControl;
}
dataGrid.VisualContainer.ColumnWidths.SetHidden(dragLine.LineIndex, dragLine.LineIndex, true);
dataGrid.Columns[dataGrid.ResolveToGridVisibleColumnIndex(dragLine.LineIndex)].IsHidden = true;
dataGrid.Columns[dataGrid.ResolveToGridVisibleColumnIndex(dragLine.LineIndex)].Width = 0.0;
}
}
if (dataGrid.SelectionController.CurrentCellManager.HasCurrentCell && dataGrid.SelectionController.CurrentCellManager.CurrentRowColumnIndex.ColumnIndex == dragLine.LineIndex)
{
#if !WPF
dataGrid.Focus(FocusState.Programmatic);
#endif
}
dragLine = null;
#if !WPF
headerCell.ReleasePointerCaptures();
if (Window.Current.CoreWindow.PointerCursor.Type != CoreCursorType.Arrow)
{
Window.Current.CoreWindow.PointerCursor = new CoreCursor(CoreCursorType.Arrow, 1);
}
#else
headerCell.isMouseLeftButtonPressed = false;
headerCell.ReleaseMouseCapture();
if (headerCell.Cursor != Cursors.Arrow)
{
SetPointerCursor(Cursors.Arrow, headerCell);
}
//WRT-4573 - While clicking on HeaderCell border on Resizing, the sorting operation is done in WinRT. Hence
//the flag is skipped to set false which will be set on mouse move.
this.isHovering = false;
#endif
}
internal void DoActionOnMouseMove(Point pp, GridHeaderCellControl headerCell)
#endif
{
bool isLastColumnHidden = false;
#if !WPF
double hScrollChange = 0;
for (int i = 0; i < this.dataGrid.VisualContainer.FrozenColumns; i++)
{
hScrollChange += this.dataGrid.VisualContainer.ColumnWidths[i];
}
// since panel x moves to negative the resizing not properly working, so Abs removed for x calculation WRT-1311, skipping for negative shrinking for first column.
var pointerPoint = new Point((pp.Position.X - (dataGrid.VisualContainer.HScrollBar.Value - hScrollChange)), Math.Abs(pp.Position.Y - dataGrid.VisualContainer.VScrollBar.Value));
if (this.isHovering && pp.Properties.IsLeftButtonPressed && this.dragLine != null)
{
var delta = 0.0d;
int repeatCount;
bool isHidden;
isHidden = isFirstColumnHidden ? dataGrid.VisualContainer.ColumnWidths.GetHidden(dragLine.LineIndex - 1, out repeatCount)
: dataGrid.VisualContainer.ColumnWidths.GetHidden(dragLine.LineIndex + 1, out repeatCount);
delta = isFirstColumnHidden ? pointerPoint.X
: pointerPoint.X - dragLine.Corner;
delta = Math.Floor(delta);
#else
if (this.isHovering && this.dragLine != null && (headerCell.isMouseLeftButtonPressed || headerCell.isTouchPressed))
{
//After hiding the column by resizing the column in AddNewRow with edit mode, when pressing enter key rendering issue has been shown in
//above AddNewRow because the CurrentRowIndex is not updated due the Current column is in Hidden state. Hence the current cell is
//edited and New row value has been committed.
CurrentCellEndEdit();
//Above code raises CurrentCellValidating if customer shows MessageBox then release capture lost and dragline will be null.
if (dragLine == null)
{
return;
}
var delta = 0.0d;
int repeatCount;
bool isHidden;
isHidden = isFirstColumnHidden ? dataGrid.VisualContainer.ColumnWidths.GetHidden(dragLine.LineIndex - 1, out repeatCount)
: dataGrid.VisualContainer.ColumnWidths.GetHidden(dragLine.LineIndex + 1, out repeatCount);
delta = isFirstColumnHidden ? pp.X
: pp.X - dragLine.Corner;
#endif
double width = Math.Max(0, dragLine.Size + delta);
var args = new ResizingColumnsEventArgs(this.dataGrid)
{
ColumnIndex = dragLine.LineIndex, Width = width
};
if (isHidden && dataGrid.AllowResizingHiddenColumns &&
#if !WPF
Window.Current.CoreWindow.PointerCursor.Type == UnhideCursor
#else
headerCell.Cursor == UnhideCursor
#endif
)
{
if (delta <= 0) //WPF-16041 added this condition to sync cursor and action when unhidden last column
{
isLastColumnHidden = true;
}
if (delta <= 2 && !isLastColumnHidden)
{
return;
}
var hiddenLineIndex = dragLine.LineIndex + 1;
if (isFirstColumnHidden)
{
hiddenLineIndex = 0;
}
var columnIndex = this.dataGrid.ResolveToGridVisibleColumnIndex(hiddenLineIndex);
dataGrid.GridColumnSizer.Suspend();
dataGrid.Columns[columnIndex].Width = delta;
dataGrid.GridColumnSizer.Resume();
if (dataGrid.Columns[columnIndex].IsHidden && delta <= 0)
{
dataGrid.GridColumnSizer.Suspend();
dataGrid.Columns[columnIndex].IsHidden = false;
dataGrid.GridColumnSizer.Resume();
if (!dataGrid.Columns[columnIndex].IsHidden)
{
var index = this.dataGrid.ResolveToScrollColumnIndex(this.dataGrid.Columns.IndexOf(dataGrid.Columns[columnIndex]));
this.dataGrid.VisualContainer.ColumnWidths.SetHidden(index, index, false);
//Need to call ScrollInView to bring the hidden column into view while hiding/unhiding
this.dataGrid.VisualContainer.ScrollColumns.ScrollInView(index, -delta);
}
if (dataGrid.AllowResizingColumns && dataGrid.AllowResizingHiddenColumns)
{
this.dataGrid.ColumnResizingController.ProcessResizeStateManager(dataGrid.Columns[columnIndex]);
}
this.dataGrid.VisualContainer.NeedToRefreshColumn = true;
this.dataGrid.VisualContainer.InvalidateMeasureInfo();
if (this.dataGrid.GridColumnDragDropController != null)
{
this.dataGrid.GridColumnDragDropController.ColumnHiddenChanged(dataGrid.Columns[columnIndex]);
}
}
else
{
dataGrid.Columns[columnIndex].IsHidden = false;
}
this.dataGrid.RowGenerator.UpdateCellStyle(columnIndex);
#if !WPF
var cursor = CoreCursorType.Arrow;
if (delta >= 0)
{
dragLine = HitTest(new Point(pointerPoint.X, pointerPoint.Y), out cursor);
}
else // WPF-16041 Since delta value is negative,need to calculate the dragline through GetVisibleAtLineIndex() for the lastcolumn
{
dragLine = dataGrid.VisualContainer.ScrollColumns.GetVisibleLineAtLineIndex(hiddenLineIndex);
cursor = ResizingCursor;
}
if (cursor != CoreCursorType.Arrow)
{
SetPointerCursor(cursor);
}
#else
var cursor = headerCell.Cursor;
if (dragLine != null && dragLine.LineIndex != hiddenLineIndex)
{
//dragline will be null when unhiding last column with ColumnSizer - AutoLastColumnFill as it is not inside ViewPort
dragLine = dataGrid.VisualContainer.ScrollColumns.GetVisibleLineAtLineIndex(hiddenLineIndex);
cursor = ResizingCursor;
}
SetPointerCursor(cursor, headerCell);
#endif
if (!double.IsNaN(headerCell.Column.MinimumWidth))
{
delta = Math.Max(delta, headerCell.Column.MinimumWidth);
}
if (!double.IsNaN(headerCell.Column.MaximumWidth))
{
delta = Math.Min(delta, headerCell.Column.MaximumWidth);
}
//WPF-16041 Since delta is negative for last column, change the delta sign and set to Width
//delta value switched to positive only when last column is hidden. Other cases, it won't hit
if ((dragLine != null) && delta <= 0)
{
args = new ResizingColumnsEventArgs(this.dataGrid)
{
ColumnIndex = dragLine.LineIndex, Width = -delta
}
}
;
else if (dragLine != null)
{
args = new ResizingColumnsEventArgs(this.dataGrid)
{
ColumnIndex = dragLine.LineIndex, Width = delta
}
}
;
}
if (dragLine != null && !this.dataGrid.RaiseResizingColumnsEvent(args))
{
var headerRow = dataGrid.RowGenerator.Items.FirstOrDefault(row => row.RowIndex == dataGrid.GetHeaderIndex());
var columnBase = headerRow.VisibleColumns.FirstOrDefault(col => col.ColumnIndex == (dragLine.LineIndex));
if (columnBase != null && columnBase.ColumnElement is GridHeaderCellControl)
{
var column = (columnBase.ColumnElement as GridHeaderCellControl).Column;
if (dragLine.LineIndex > dataGrid.FrozenColumnCount)
{
dataGrid.VisualContainer.ScrollColumns.SetLineResize(dragLine.LineIndex, ComputeResizingWidth(column, args.Width != 0 ? args.Width : 1));
}
else
{
column.Width = ComputeResizingWidth(column, args.Width != 0 ? args.Width : 1);
}
}
isFirstColumnHidden = false;
}
}
else
{
this.isHovering = false;
#if !WPF
Point point = pointerPoint;
var cursor = ResizingCursor;
#else
Point point = pp;
var cursor = headerCell.Cursor;
#endif
#if !WPF
var hit = HitTest(pointerPoint, out cursor);
if (hit != null && cursor != CoreCursorType.Arrow)
#else
var hit = HitTest(pp, out cursor);
//When LineIndex returns the first column index, this condition fails hence the greater than or equal to condition is added.
if (hit != null && (cursor == UnhideCursor || hit.LineIndex >= dataGrid.GetFirstColumnIndex()))
#endif
{
var lineIndex = hit.LineIndex;
if (cursor == UnhideCursor)
{
lineIndex++;
int count;
if (this.dataGrid.VisualContainer.ColumnWidths.GetHidden(lineIndex, out count))
{
lineIndex += count - 1;
}
else
{
lineIndex--;
}
}
var index = this.dataGrid.ResolveToGridVisibleColumnIndex(lineIndex);
if (index >= 0 && index < this.dataGrid.Columns.Count)
{
GridColumn column = this.dataGrid.Columns[index];
var lineindex = this.dataGrid.ResolveToScrollColumnIndex(this.dataGrid.Columns.IndexOf(column));
if (!this.CanResizeColumn(column))
{
return;
}
#if WPF
this.SetPointerCursor(cursor, headerCell);
#else
this.SetPointerCursor(cursor);
#endif
}
}
bool edgeHit = point.X < 5.0 && point.X > 0;
if (hit == null && edgeHit)
{
hit = new VisibleLineInfo(0, 0, 0, point.X, 0, true, false);
}
if (hit != null || edgeHit)
{
var row = this.dataGrid.VisualContainer.ScrollRows.GetVisibleLineAtPoint(point.Y);
if (row != null && row.IsHeader)
{
this.isHovering = true;
}
}
#if !WPF
if (!isHovering && Window.Current.CoreWindow.PointerCursor.Type != CoreCursorType.Arrow)
{
SetPointerCursor(CoreCursorType.Arrow);
}
#else
if (!isHovering && headerCell.Cursor != Cursors.Arrow && (!headerCell.isMouseLeftButtonPressed || !headerCell.isTouchPressed))
{
SetPointerCursor(Cursors.Arrow, headerCell);
}
#endif
}
}
