internal override void VerifyRowRange(GridRange rowRange)
{
if (GridRange.IntersectsWith(rowRange))
{
throw new InvalidOperationException(DiagnosticMessages.BlockBinding_IntersectsWithRowRange(Ordinal));
}
if (!Template.Orientation.HasValue)
{
throw new InvalidOperationException(DiagnosticMessages.BlockBinding_NullOrientation);
}
var orientation = Template.Orientation.GetValueOrDefault();
if (orientation == Orientation.Horizontal)
{
if (!rowRange.Contains(GridRange.Left) || !rowRange.Contains(GridRange.Right))
{
throw new InvalidOperationException(DiagnosticMessages.BlockBinding_OutOfHorizontalRowRange(Ordinal));
}
}
else
{
Debug.Assert(orientation == Orientation.Vertical);
if (!rowRange.Contains(GridRange.Top) || !rowRange.Contains(GridRange.Bottom))
{
throw new InvalidOperationException(DiagnosticMessages.BlockBinding_OutOfVerticalRowRange(Ordinal));
}
}
}
internal override void VerifyRowRange(GridRange rowRange)
{
if (GridRange.IntersectsWith(rowRange))
{
throw new InvalidOperationException(DiagnosticMessages.ScalarBinding_IntersectsWithRowRange(Ordinal));
}
if (!RepeatsWhenFlow)
{
return;
}
if (Template.Flowable(Orientation.Horizontal))
{
if (!rowRange.Contains(GridRange.Left) || !rowRange.Contains(GridRange.Right))
{
throw new InvalidOperationException(DiagnosticMessages.ScalarBinding_OutOfHorizontalRowRange(Ordinal));
}
}
else if (Template.Flowable(Orientation.Vertical))
{
if (!rowRange.Contains(GridRange.Top) || !rowRange.Contains(GridRange.Bottom))
{
throw new InvalidOperationException(DiagnosticMessages.ScalarBinding_OutOfVerticalRowRange(Ordinal));
}
}
else
{
throw new InvalidOperationException(DiagnosticMessages.ScalarBinding_FlowRepeatableNotAllowedByTemplate(Ordinal));
}
}
public bool Remove(GridRange range)
{
// if the item is not contained in this quad, there's a problem
if (!m_bounds.Contains(range))
{
throw new ArgumentException("range is out of the bounds of this quadtree node");
}
// for each subnode:
// if the node contains the item, add the item to that node and return
// this recurses into the node that is just large enough to fit this item
foreach (QuadTreeNode node in m_nodes)
{
if (node.Bounds.Contains(range))
{
return(node.Remove(range));
}
}
for (int i = 0; i < Contents.Count; i++)
{
if (Contents[i].Equals(range))
{
Contents.RemoveAt(i);
return(true);
}
}
return(false);
}
internal sealed override void VerifyRowRange(GridRange rowRange)
{
if (!rowRange.Contains(GridRange))
{
throw new InvalidOperationException(DiagnosticMessages.RowBinding_OutOfRowRange(Ordinal));
}
}
/// <summary>
/// Query the QuadTree for items that are in the given area
/// </summary>
/// <returns></returns>
public List <GridRange> QueryInternal(GridRange queryArea, bool stopOnFirst)
{
// create a list of the items that are found
List <GridRange> results = new List <GridRange>();
// this quad contains items that are not entirely contained by
// it's four sub-quads. Iterate through the items in this quad
// to see if they intersect.
foreach (var item in this.Contents)
{
if (queryArea.IntersectsWith(item))
{
results.Add(item);
if (stopOnFirst == true)
{
return(results);
}
}
}
foreach (QuadTreeNode node in m_nodes)
{
if (node.IsEmpty)
{
continue;
}
// Case 1: search area completely contained by sub-quad
// if a node completely contains the query area, go down that branch
// and skip the remaining nodes (break this loop)
if (node.Bounds.Contains(queryArea))
{
results.AddRange(node.QueryInternal(queryArea, stopOnFirst));
break;
}
// Case 2: Sub-quad completely contained by search area
// if the query area completely contains a sub-quad,
// just add all the contents of that quad and it's children
// to the result set. You need to continue the loop to test
// the other quads
if (queryArea.Contains(node.Bounds))
{
results.AddRange(node.SubTreeContents);
continue;
}
// Case 3: search area intersects with sub-quad
// traverse into this quad, continue the loop to search other
// quads
if (node.Bounds.IntersectsWith(queryArea))
{
results.AddRange(node.QueryInternal(queryArea, stopOnFirst));
}
}
return(results);
}
public override void Draw(RangePaintEventArgs e)
{
RangeRegion region = mSelection.GetSelectionRegion();
if (region.IsEmpty())
{
return;
}
// get visible range for scrollable area
GridRange visibleScrollabeRange = mSelection.Grid.RangeAtAreaExpanded(CellPositionType.Scrollable);
System.Drawing.Brush brush = e.GraphicsCache.BrushsCache.GetBrush(mSelection.BackColor);
CellContext focusContext = new CellContext(e.Grid, mSelection.ActivePosition);
// get focus rectangle
// clipped to visible range
GridRange focusClippedRange = visibleScrollabeRange.Intersect(new GridRange(mSelection.ActivePosition, mSelection.ActivePosition));
System.Drawing.Rectangle focusRect = e.Grid.PositionToRectangle(focusClippedRange.Start);
//Draw each selection range
foreach (GridRange rangeToLoop in region)
{
// intersect given range with visible range
// this way we ensure we don't loop through thousands
// of rows to calculate rectToDraw
GridRange rng = visibleScrollabeRange.Intersect(rangeToLoop);
System.Drawing.Rectangle rectToDraw = e.Grid.RangeToRectangle(rng);
if (rectToDraw == System.Drawing.Rectangle.Empty)
{
continue;
}
System.Drawing.Region regionToDraw = new System.Drawing.Region(rectToDraw);
if (rectToDraw.IntersectsWith(focusRect))
{
regionToDraw.Exclude(focusRect);
}
e.GraphicsCache.Graphics.FillRegion(brush, regionToDraw);
//Draw the border only if there isn't a editing cell
// and is the range that contains the focus or there is a single range
if (rng.Contains(mSelection.ActivePosition) || region.Count == 1)
{
if (focusContext.IsEditing() == false)
{
mSelection.Border.Draw(e.GraphicsCache, rectToDraw);
}
}
}
//Draw Focus
System.Drawing.Brush brushFocus = e.GraphicsCache.BrushsCache.GetBrush(mSelection.FocusBackColor);
e.GraphicsCache.Graphics.FillRectangle(brushFocus, focusRect);
}
