public override void LeaveContainer(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
base.LeaveContainer(operation);
foreach (PlacementInformation info in operation.PlacedItems)
{
info.Item.Properties.GetAttachedProperty(Canvas.LeftProperty).Reset();
info.Item.Properties.GetAttachedProperty(Canvas.TopProperty).Reset();
}
}
public override void SetPosition(PlacementInformation info)
{
base.SetPosition(info);
info.Item.Properties[FrameworkElement.MarginProperty].Reset();
UIElement child = info.Item.View;
Rect newPosition = info.Bounds;
if (IsPropertySet(child, Canvas.LeftProperty) || !IsPropertySet(child, Canvas.RightProperty))
{
if (newPosition.Left != GetCanvasProperty(child, Canvas.LeftProperty))
{
info.Item.Properties.GetAttachedProperty(Canvas.LeftProperty).SetValue(newPosition.Left);
}
}
else
{
var newR = extendedComponent.ActualWidth - newPosition.Right;
if (newR != GetCanvasProperty(child, Canvas.RightProperty))
{
info.Item.Properties.GetAttachedProperty(Canvas.RightProperty).SetValue(newR);
}
}
if (IsPropertySet(child, Canvas.TopProperty) || !IsPropertySet(child, Canvas.BottomProperty))
{
if (newPosition.Top != GetCanvasProperty(child, Canvas.TopProperty))
{
info.Item.Properties.GetAttachedProperty(Canvas.TopProperty).SetValue(newPosition.Top);
}
}
else
{
var newB = extendedComponent.ActualHeight - newPosition.Bottom;
if (newB != GetCanvasProperty(child, Canvas.BottomProperty))
{
info.Item.Properties.GetAttachedProperty(Canvas.BottomProperty).SetValue(newB);
}
}
if (info.Item == Services.Selection.PrimarySelection)
{
var b = new Rect(0, 0, extendedView.ActualWidth, extendedView.ActualHeight);
// only for primary selection:
if (grayOut != null)
{
grayOut.AnimateActiveAreaRectTo(b);
}
else
{
GrayOutDesignerExceptActiveArea.Start(ref grayOut, this.Services, this.ExtendedItem.View, b);
}
}
}
protected override void OnStopped()
{
if (adornerPanel != null)
{
designPanel.Adorners.Remove(adornerPanel);
adornerPanel = null;
}
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
selectionFrame = null;
base.OnStopped();
}
protected override void OnDragStarted(MouseEventArgs e)
{
adornerPanel = new AdornerPanel();
adornerPanel.SetAdornedElement(container.View, container);
selectionFrame = new SelectionFrame();
adornerPanel.Children.Add(selectionFrame);
designPanel.Adorners.Add(adornerPanel);
GrayOutDesignerExceptActiveArea.Start(ref grayOut, services, container.View);
}
public override void LeaveContainer(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
base.LeaveContainer(operation);
foreach (PlacementInformation info in operation.PlacedItems)
{
if (info.Item.ComponentType == typeof(ColumnDefinition))
{
// TODO: combine the width of the deleted column with the previous column
this.ExtendedItem.Properties["ColumnDefinitions"].CollectionElements.Remove(info.Item);
}
else if (info.Item.ComponentType == typeof(RowDefinition))
{
this.ExtendedItem.Properties["RowDefinitions"].CollectionElements.Remove(info.Item);
}
else
{
info.Item.Properties.GetAttachedProperty(Grid.RowProperty).Reset();
info.Item.Properties.GetAttachedProperty(Grid.ColumnProperty).Reset();
info.Item.Properties.GetAttachedProperty(Grid.RowSpanProperty).Reset();
info.Item.Properties.GetAttachedProperty(Grid.ColumnSpanProperty).Reset();
HorizontalAlignment ha = (HorizontalAlignment)info.Item
.Properties[FrameworkElement.HorizontalAlignmentProperty]
.ValueOnInstance;
VerticalAlignment va = (VerticalAlignment)info.Item
.Properties[FrameworkElement.VerticalAlignmentProperty]
.ValueOnInstance;
if (ha == HorizontalAlignment.Stretch)
{
info.Item.Properties[FrameworkElement.WidthProperty].SetValue(info.Bounds.Width);
}
if (va == VerticalAlignment.Stretch)
{
info.Item.Properties[FrameworkElement.HeightProperty].SetValue(info.Bounds.Height);
}
}
}
}
public override void EndPlacement(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
base.EndPlacement(operation);
}
public override void SetPosition(PlacementInformation info)
{
base.SetPosition(info);
int leftColumnIndex = GetColumnIndex(info.Bounds.Left);
int rightColumnIndex = GetEndColumnIndex(info.Bounds.Right);
if (rightColumnIndex < leftColumnIndex)
{
rightColumnIndex = leftColumnIndex;
}
SetColumn(info.Item, leftColumnIndex, rightColumnIndex - leftColumnIndex + 1);
int topRowIndex = GetRowIndex(info.Bounds.Top);
int bottomRowIndex = GetEndRowIndex(info.Bounds.Bottom);
if (bottomRowIndex < topRowIndex)
{
bottomRowIndex = topRowIndex;
}
SetRow(info.Item, topRowIndex, bottomRowIndex - topRowIndex + 1);
Rect availableSpaceRect = new Rect(
new Point(GetColumnOffset(leftColumnIndex), GetRowOffset(topRowIndex)),
new Point(GetColumnOffset(rightColumnIndex + 1), GetRowOffset(bottomRowIndex + 1))
);
if (info.Item == Services.Selection.PrimarySelection)
{
// only for primary selection:
if (grayOut != null)
{
grayOut.AnimateActiveAreaRectTo(availableSpaceRect);
}
else
{
GrayOutDesignerExceptActiveArea.Start(ref grayOut, this.Services, this.ExtendedItem.View,
availableSpaceRect);
}
}
HorizontalAlignment ha = (HorizontalAlignment)info.Item
.Properties[FrameworkElement.HorizontalAlignmentProperty]
.ValueOnInstance;
VerticalAlignment va = (VerticalAlignment)info.Item.Properties[FrameworkElement.VerticalAlignmentProperty]
.ValueOnInstance;
if (enteredIntoNewContainer)
{
ha = SuggestHorizontalAlignment(info.Bounds, availableSpaceRect);
va = SuggestVerticalAlignment(info.Bounds, availableSpaceRect);
}
info.Item.Properties[FrameworkElement.HorizontalAlignmentProperty].SetValue(ha);
info.Item.Properties[FrameworkElement.VerticalAlignmentProperty].SetValue(va);
Thickness margin = new Thickness(0, 0, 0, 0);
if (ha == HorizontalAlignment.Left || ha == HorizontalAlignment.Stretch)
{
margin.Left = info.Bounds.Left - GetColumnOffset(leftColumnIndex);
}
if (va == VerticalAlignment.Top || va == VerticalAlignment.Stretch)
{
margin.Top = info.Bounds.Top - GetRowOffset(topRowIndex);
}
if (ha == HorizontalAlignment.Right || ha == HorizontalAlignment.Stretch)
{
margin.Right = GetColumnOffset(rightColumnIndex + 1) - info.Bounds.Right;
}
if (va == VerticalAlignment.Bottom || va == VerticalAlignment.Stretch)
{
margin.Bottom = GetRowOffset(bottomRowIndex + 1) - info.Bounds.Bottom;
}
info.Item.Properties[FrameworkElement.MarginProperty].SetValue(margin);
if (ha == HorizontalAlignment.Stretch)
{
info.Item.Properties[FrameworkElement.WidthProperty].Reset();
}
//else
// info.Item.Properties[FrameworkElement.WidthProperty].SetValue(info.Bounds.Width);
if (va == VerticalAlignment.Stretch)
{
info.Item.Properties[FrameworkElement.HeightProperty].Reset();
}
//else
// info.Item.Properties[FrameworkElement.HeightProperty].SetValue(info.Bounds.Height);
}
public override void EndPlacement(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
enteredIntoNewContainer = false;
base.EndPlacement(operation);
}
