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
}
}
internal VisibleLineInfo HitTest(Point point, out Cursor cursor)
#endif
{
// VisibleLineInfo info = point.X == 0.0 ? this.dataGrid.VisualContainer.ScrollColumns.GetVisibleLineAtPoint(point.X)
// : dataGrid.VisualContainer.ScrollColumns.GetLineNearCorner(point.X, HitTestPrecision);
//Changed the code for WPF-16038
//To get the visibleline at point when hide all the columns and try to resizing
VisibleLineInfo info = this.dataGrid.VisualContainer.ScrollColumns.GetVisibleLineAtPoint(point.X);
info = (info != null && (point.X == 0.0 || HitTestPrecision > info.ClippedSize / 2)) ? info :
dataGrid.VisualContainer.ScrollColumns.GetLineNearCorner(point.X, HitTestPrecision);
#if !WPF
if (info != null && info.LineIndex > this.dataGrid.ResolveToStartColumnIndex() - 1)
{
cursor = ResizingCursor;
}
else
{
cursor = CoreCursorType.Arrow;
}
#else
cursor = ResizingCursor;
#endif
if (dataGrid.AllowResizingHiddenColumns && info == null)
{
var lineInfo = dataGrid.VisualContainer.ScrollColumns.GetLineNearCorner(point.X, HitTestHiddenColPrecision, CornerSide.Bottom);
if (lineInfo == null)
{
var lines = this.dataGrid.VisualContainer.ScrollColumns.GetVisibleLines();
var visibleLine = lines.GetVisibleLineAtPoint(point.X);
if (visibleLine != null)
{
var count = 0;
if (this.dataGrid.VisualContainer.ColumnWidths.GetHidden(0, out count))
{
var d = visibleLine.ClippedOrigin - point.X;
if (Math.Abs(d) <= HitTestHiddenColPrecision)
{
isFirstColumnHidden = true;
lineInfo = visibleLine;
}
}
}
}
if (lineInfo != null)
{
var lineIndex = lineInfo.LineIndex;
lineIndex = (isFirstColumnHidden && lineIndex > 0) ? lineIndex - 1 : lineIndex + 1;
int rc;
if (dataGrid.VisualContainer.ColumnWidths.GetHidden(lineIndex, out rc) ||
dataGrid.VisualContainer.ColumnWidths[lineIndex] == 0.0 || lineInfo.Size == 0)
{
cursor = UnhideCursor;
}
info = lineInfo;
}
}
var indentCellCount = this.dataGrid.ResolveToScrollColumnIndex(0);
if (info != null && (info.LineIndex < indentCellCount && !dataGrid.AllowResizingHiddenColumns))
{
return(null);
}
return(info);
}
