private void NormalizeWidthStars(GridElement grid, List <int> widthStarIndices)
{
double num1 = 0.0;
foreach (int column in widthStarIndices)
{
num1 += grid.GetComputedColumnWidth(column);
}
foreach (int column in widthStarIndices)
{
double num2 = RoundingHelper.RoundLength(num1 == 0.0 ? 1.0 : grid.GetComputedColumnWidth(column) / num1);
grid.ColumnDefinitions[column].Width = new GridLength(num2, GridUnitType.Star);
}
}
public static GridBox GetComputedGridBoxContainingRect(Rect rect, GridElement grid)
{
int columnBeforePosition = grid.GetComputedColumnBeforePosition(rect.Left);
int columnAfterPosition = grid.GetComputedColumnAfterPosition(rect.Right);
int rowBeforePosition = grid.GetComputedRowBeforePosition(rect.Top);
int rowAfterPosition = grid.GetComputedRowAfterPosition(rect.Bottom);
if (columnAfterPosition > columnBeforePosition + 1 && rect.Right < grid.GetComputedPositionOfColumn(columnAfterPosition - 1) + grid.GetComputedColumnWidth(columnAfterPosition - 1) / 2.0)
{
--columnAfterPosition;
}
if (columnAfterPosition > columnBeforePosition + 1 && rect.Left > grid.GetComputedPositionOfColumn(columnBeforePosition) + grid.GetComputedColumnWidth(columnBeforePosition) / 2.0)
{
++columnBeforePosition;
}
if (columnAfterPosition == columnBeforePosition + 1 && columnAfterPosition < grid.ColumnDefinitions.Count && grid.GetComputedPositionOfColumn(columnAfterPosition) < (rect.Left + rect.Right) / 2.0)
{
++columnBeforePosition;
++columnAfterPosition;
}
if (rowAfterPosition > rowBeforePosition + 1 && rect.Bottom < grid.GetComputedPositionOfRow(rowAfterPosition - 1) + grid.GetComputedRowHeight(rowAfterPosition - 1) / 2.0)
{
--rowAfterPosition;
}
if (rowAfterPosition > rowBeforePosition + 1 && rect.Top > grid.GetComputedPositionOfRow(rowBeforePosition) + grid.GetComputedRowHeight(rowBeforePosition) / 2.0)
{
++rowBeforePosition;
}
if (rowAfterPosition == rowBeforePosition + 1 && rowAfterPosition < grid.RowDefinitions.Count && grid.GetComputedPositionOfRow(rowAfterPosition) < (rect.Top + rect.Bottom) / 2.0)
{
++rowBeforePosition;
++rowAfterPosition;
}
return(new GridBox(columnBeforePosition, columnAfterPosition, rowBeforePosition, rowAfterPosition));
}
protected override bool OnDrag(Point dragStartPosition, Point dragCurrentPosition, bool scrollNow)
{
SceneView activeView = this.ActiveView;
LayoutLineHeaderAdorner lineHeaderAdorner = this.ActiveAdorner as LayoutLineHeaderAdorner;
GridElement grid = (GridElement)((Adorner)this.ActiveAdorner).Element;
GridLayoutDesigner gridLayoutDesigner = (GridLayoutDesigner)grid.LayoutDesigner;
activeView.EnsureVisible(this.ActiveAdorner, scrollNow);
Matrix transformFromRoot = activeView.GetComputedTransformFromRoot((SceneElement)grid);
dragStartPosition *= transformFromRoot;
dragCurrentPosition = this.ToolBehaviorContext.SnappingEngine.SnapPoint(dragCurrentPosition);
dragCurrentPosition *= transformFromRoot;
if (lineHeaderAdorner == null || lineHeaderAdorner.Index <= 0)
{
return(false);
}
this.EnsureEditTransaction();
if (lineHeaderAdorner.IsX)
{
if (this.firstLineHeaderDrag)
{
this.effectiveLineHeaderIndex = lineHeaderAdorner.Index;
if (dragCurrentPosition.X < dragStartPosition.X)
{
while (this.effectiveLineHeaderIndex > 1 && grid.GetComputedColumnWidth(this.effectiveLineHeaderIndex - 1) < 1.0 / activeView.Zoom)
{
--this.effectiveLineHeaderIndex;
}
this.firstLineHeaderDrag = false;
}
else if (dragCurrentPosition.X > dragStartPosition.X)
{
while (this.effectiveLineHeaderIndex < grid.ColumnDefinitions.Count - 2 && grid.GetComputedColumnWidth(this.effectiveLineHeaderIndex) < 1.0 / activeView.Zoom)
{
++this.effectiveLineHeaderIndex;
}
this.firstLineHeaderDrag = false;
}
}
if (!this.firstLineHeaderDrag)
{
int num = this.effectiveLineHeaderIndex - 1;
double width = dragCurrentPosition.X - grid.GetComputedPositionOfColumn(num);
gridLayoutDesigner.AdjustColumn(grid, num, width, this.IsShiftDown, !grid.ViewModel.IsInGridDesignMode);
}
}
else
{
if (this.firstLineHeaderDrag)
{
this.effectiveLineHeaderIndex = lineHeaderAdorner.Index;
if (dragCurrentPosition.Y < dragStartPosition.Y)
{
while (this.effectiveLineHeaderIndex > 1 && grid.GetComputedRowHeight(this.effectiveLineHeaderIndex - 1) < 1.0 / activeView.Zoom)
{
--this.effectiveLineHeaderIndex;
}
this.firstLineHeaderDrag = false;
}
else if (dragCurrentPosition.Y > dragStartPosition.Y)
{
while (this.effectiveLineHeaderIndex < grid.RowDefinitions.Count - 2 && grid.GetComputedRowHeight(this.effectiveLineHeaderIndex) < 1.0 / activeView.Zoom)
{
++this.effectiveLineHeaderIndex;
}
this.firstLineHeaderDrag = false;
}
}
if (!this.firstLineHeaderDrag)
{
int row = this.effectiveLineHeaderIndex - 1;
double height = dragCurrentPosition.Y - grid.GetComputedPositionOfRow(row);
gridLayoutDesigner.AdjustRow(grid, row, height, this.IsShiftDown, !grid.ViewModel.IsInGridDesignMode);
}
}
((Adorner)this.ActiveAdorner).AdornerSet.InvalidateRender();
this.UpdateEditTransaction();
return(true);
}
