protected override void OnPreviewDragDrop(RadDropEventArgs e)
{
base.OnPreviewDragDrop(e);
this.scrollTimer.Stop();
if (!this.owner.ShowGroups)
{
this.HandleUngroupedDragDrop(e);
}
else
{
this.HandleGroupedDragDrop(e);
}
RadTileElement context = this.Context as RadTileElement;
RadElement hitTarget = e.HitTarget as RadElement;
Point point = e.DropLocation;
if (context == null)
{
return;
}
if (hitTarget != null)
{
point = hitTarget.PointToControl(point);
}
Point location = context.ControlBoundingRectangle.Location;
SizeF sizeF = new SizeF((float)(point.X - location.X), (float)(point.Y - location.Y));
context.Visibility = ElementVisibility.Visible;
new AnimatedPropertySetting(RadElement.PositionOffsetProperty, (object)sizeF, (object)SizeF.Empty, 5, 10)
{
RemoveAfterApply = true
}.ApplyValue((RadObject)context);
ControlTraceMonitor.TrackAtomicFeature(hitTarget, "Reordering");
}
protected virtual void HandleUngroupedDragDrop(RadDropEventArgs e)
{
RadElement hitTarget = e.HitTarget as RadElement;
RadTileElement context = this.Context as RadTileElement;
Point point = e.DropLocation;
point.Offset(-(int)this.owner.TileLayout.PositionOffset.Width, -(int)this.owner.TileLayout.PositionOffset.Height);
if (hitTarget != null)
{
point = hitTarget.PointToControl(point);
}
if (context == null || hitTarget == null)
{
return;
}
Point targetCell = this.GetTargetCell(context, point);
if (targetCell.X == -1)
{
return;
}
targetCell.X = Math.Min(targetCell.X, this.owner.RowsCount - context.RowSpan);
context.Row = targetCell.X;
context.Column = targetCell.Y;
int colSpan = context.ColSpan;
context.ColSpan = 0;
this.OffsetTiles(context, colSpan);
context.ColSpan = colSpan;
context.Column -= colSpan;
this.owner.InvalidateMeasure(true);
this.owner.UpdateLayout();
}
protected bool OffsetHoveredTile(Point clientPoint)
{
if (this.owner.ShowGroups)
{
clientPoint.Offset(-this.xOutlineFormOffset, -this.yOutlineFormOffset);
RadTileElement context = this.Context as RadTileElement;
if (context == null)
{
return(true);
}
TileGroupElement targetGroup = this.GetTargetGroup(new RectangleF((PointF)clientPoint, (SizeF)context.Size));
if (targetGroup == null)
{
return(true);
}
Point targetCell = this.GetTargetCell(targetGroup, clientPoint);
if (targetCell.X == -1)
{
return(true);
}
foreach (RadTileElement radTileElement in (RadItemCollection)targetGroup.Items)
{
if (radTileElement != context && radTileElement.Row == targetCell.X && radTileElement.Column == targetCell.Y)
{
radTileElement.PositionOffset = new SizeF(15f, 0.0f);
this.previousHoveredTile = radTileElement;
break;
}
}
}
else
{
clientPoint.Offset(-this.xOutlineFormOffset, -this.yOutlineFormOffset);
clientPoint.Offset(-(int)this.owner.TileLayout.PositionOffset.Width, -(int)this.owner.TileLayout.PositionOffset.Height);
RadTileElement context = this.Context as RadTileElement;
if (context == null)
{
return(true);
}
Point targetCell = this.GetTargetCell(context, clientPoint);
if (targetCell.X == -1)
{
return(true);
}
foreach (RadTileElement radTileElement in (RadItemCollection)this.owner.Items)
{
if (radTileElement != context && radTileElement.Row == targetCell.X && radTileElement.Column == targetCell.Y)
{
radTileElement.PositionOffset = new SizeF(15f, 0.0f);
this.previousHoveredTile = radTileElement;
break;
}
}
}
return(false);
}
private bool CanPlace(RadTileElement tileElement, int row, int col)
{
Rectangle rect = new Rectangle(col, row, tileElement.ColSpan, tileElement.RowSpan);
foreach (RadTileElement radTileElement in (RadItemCollection)this.Items)
{
if (radTileElement != tileElement && new Rectangle(radTileElement.Column, radTileElement.Row, radTileElement.ColSpan, radTileElement.RowSpan).IntersectsWith(rect))
{
return(false);
}
}
return(true);
}
public void ScrollToItem(RadTileElement tile, int desiredOffset)
{
int num = tile.ControlBoundingRectangle.X - this.scrollBar.ControlBoundingRectangle.X - desiredOffset + this.scrollBar.Value;
if (num > this.scrollBar.Maximum - this.scrollBar.LargeChange + 1)
{
num = this.scrollBar.Maximum - this.scrollBar.LargeChange + 1;
}
else if (num < 0)
{
num = 0;
}
this.scrollBar.Value = num;
}
private void OffsetTiles(TileGroupElement group, RadTileElement current, int offset)
{
this.offsetStack.Push(current);
foreach (RadTileElement current1 in (RadItemCollection)group.Items)
{
if (!this.offsetStack.Contains(current1) && current1.Column < current.Column + current.ColSpan + offset && (current1.Column + current1.ColSpan > current.Column && current1.Row < current.Row + current.RowSpan) && current1.Row + current1.RowSpan > current.Row)
{
this.OffsetTiles(group, current1, offset - (current1.Column - current.Column - current.ColSpan));
}
}
current.Column += offset;
group.ColumnsCount = Math.Max(group.ColumnsCount, current.Column + current.ColSpan);
this.offsetStack.Pop();
}
protected override void OnPanGesture(PanGestureEventArgs args)
{
base.OnPanGesture(args);
if (!this.zoomedIn || args.Handled)
{
return;
}
RadTileElement elementAtPoint = this.ElementTree.GetElementAtPoint(args.Location) as RadTileElement;
if (args.IsBegin && elementAtPoint != null && elementAtPoint.AllowDrag)
{
return;
}
this.ScrollView(args.Offset.Width, true);
args.Handled = true;
}
private void items_ItemsChanged(
RadItemCollection changed,
RadItem target,
ItemsChangeOperation operation)
{
if (target != null && !typeof(RadTileElement).IsAssignableFrom(target.GetType()))
{
throw new ArgumentException("The Items collection accepts only objects or descendants of type RadTileElement");
}
RadTileElement tileElement = target as RadTileElement;
RadControl control = this.ElementTree.Control as RadControl;
if (control != null && control.IsInitializing || this.ElementTree.Control.Site != null)
{
return;
}
if (this.AutoArrangeNewTiles && tileElement != null && operation == ItemsChangeOperation.Inserted)
{
int num1 = 0;
int num2 = 0;
bool flag = false;
if (tileElement.GetValueSource(GridLayout.ColumnIndexProperty) > ValueSource.DefaultValue || tileElement.GetValueSource(GridLayout.RowIndexProperty) > ValueSource.DefaultValue)
{
this.UpdateCellCount();
this.InvalidateMeasure();
return;
}
int col = 0;
while (!flag)
{
for (int row = 0; !flag && row < this.RowsCount; ++row)
{
if (this.CanPlace(tileElement, row, col))
{
num1 = row;
num2 = col;
flag = true;
}
}
++col;
}
tileElement.Column = num2;
tileElement.Row = num1;
}
this.UpdateCellCount();
this.InvalidateMeasure();
}
private void items_ItemsChanged(
RadItemCollection changed,
RadItem target,
ItemsChangeOperation operation)
{
RadTileElement tileElement = target as RadTileElement;
RadPanoramaElement ancestor = this.FindAncestor <RadPanoramaElement>();
RadControl radControl = this.ElementTree != null ? this.ElementTree.Control as RadControl : (RadControl)null;
if (radControl == null || radControl.IsInitializing || this.DesignMode)
{
return;
}
if (ancestor != null && ancestor.AutoArrangeNewTiles && (tileElement != null && operation == ItemsChangeOperation.Inserted))
{
int num1 = 0;
int num2 = 0;
bool flag = false;
if (tileElement.GetValueSource(GridLayout.ColumnIndexProperty) > ValueSource.DefaultValue || tileElement.GetValueSource(GridLayout.RowIndexProperty) > ValueSource.DefaultValue)
{
this.UpdateCellCount();
this.InvalidateMeasure();
return;
}
int col = 0;
while (!flag)
{
for (int row = 0; !flag && row < this.RowsCount; ++row)
{
if (this.CanPlace(tileElement, row, col))
{
num1 = row;
num2 = col;
flag = true;
}
}
++col;
}
tileElement.Column = num2;
tileElement.Row = num1;
}
this.UpdateCellCount();
this.InvalidateMeasure();
}
protected virtual void HandleGroupedDragDrop(RadDropEventArgs e)
{
RadTileElement hitTarget = e.HitTarget as RadTileElement;
RadTileElement context = this.Context as RadTileElement;
Point point = e.DropLocation;
if (hitTarget != null)
{
point = hitTarget.PointToControl(point);
}
TileGroupElement targetGroup = this.GetTargetGroup(new RectangleF((PointF)point, (SizeF)context.Size));
if (context == null || targetGroup == null)
{
return;
}
Point targetCell = this.GetTargetCell(targetGroup, point);
if (targetCell.X == -1)
{
return;
}
targetCell.X = Math.Max(0, Math.Min(targetCell.X, targetGroup.RowsCount - context.RowSpan));
context.Row = targetCell.X;
context.Column = targetCell.Y;
if (!targetGroup.Items.Contains((RadItem)context))
{
(context.Parent.Parent as TileGroupElement).Items.Remove((RadItem)context);
targetGroup.Items.Add((RadItem)context);
}
int colSpan = context.ColSpan;
context.ColSpan = 0;
this.OffsetTiles(targetGroup, context, colSpan);
context.ColSpan = colSpan;
context.Column -= colSpan;
this.owner.InvalidateMeasure(true);
this.owner.UpdateLayout();
}
protected virtual Point GetTargetCell(RadTileElement source, Point location)
{
float width = (float)this.owner.CellSize.Width;
float height = (float)this.owner.CellSize.Height;
int y = (int)((double)location.X / (double)width) + (location.X - (int)((double)location.X / (double)width) > 0 ? 1 : 0) - 1;
Point point1 = new Point((int)((double)location.Y / (double)height) + ((double)location.Y - (double)location.Y / (double)height > 0.0 ? 1 : 0) - 1, y);
Point point2 = Point.Empty;
PointF pointF1 = new PointF(float.PositiveInfinity, float.PositiveInfinity);
if (point1.X < 0)
{
point1.X = 0;
}
if (point1.Y < 0)
{
point1.Y = 0;
}
for (int index = 0; index < this.checkDirections.Length; ++index)
{
Point point3 = new Point(point1.X + this.checkDirections[index].X, point1.Y + this.checkDirections[index].Y);
if (this.CanPlaceElementAtPosition(point3.X, point3.Y, source.ColSpan, source.RowSpan))
{
PointF cellCoordinates = this.GetCellCoordinates(point3.X, point3.Y);
PointF pointF2 = new PointF(cellCoordinates.X - (float)location.X, cellCoordinates.Y - (float)location.Y);
if ((double)pointF2.X * (double)pointF2.X + (double)pointF2.Y * (double)pointF2.Y < (double)pointF1.X * (double)pointF1.X + (double)pointF1.Y * (double)pointF1.Y)
{
pointF1 = pointF2;
point2 = new Point(point3.X, point3.Y);
}
}
}
if ((double)pointF1.X == double.PositiveInfinity || (double)pointF1.Y == double.PositiveInfinity)
{
return(new Point(-1, -1));
}
return(point2);
}
public void ScrollToItem(RadTileElement tile)
{
this.ScrollToItem(tile, 0);
}