void OnPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (sender == null || e.PropertyName == "Width" || e.PropertyName == "Height")
{
AdornerPanel.SetPlacement(thumb1,
new RelativePlacement(HorizontalAlignment.Center, VerticalAlignment.Top)
{
YOffset = 0,
XOffset = -1 * PlacementOperation.GetRealElementSize(ExtendedItem.View).Width / 4
});
AdornerPanel.SetPlacement(thumb2,
new RelativePlacement(HorizontalAlignment.Left, VerticalAlignment.Center)
{
YOffset = -1 * PlacementOperation.GetRealElementSize(ExtendedItem.View).Height / 4,
XOffset = 0
});
var designPanel = this.ExtendedItem.Services.DesignPanel as DesignPanel;
if (designPanel != null)
{
designPanel.AdornerLayer.UpdateAdornersForElement(this.ExtendedItem.View, true);
}
}
}
public virtual Rect GetPosition(PlacementOperation operation, DesignItem item)
{
if (item.View == null)
{
return(Rect.Empty);
}
var p = item.View.TranslatePoint(new Point(), operation.CurrentContainer.View);
return(new Rect(p, PlacementOperation.GetRealElementSize(item.View)));
}
protected override Size ArrangeOverride(Size arrangeBounds)
{
AdornerPanel parent = this.Parent as AdornerPanel;
if (parent != null && parent.AdornedElement != null)
{
if (checkWidth)
{
this.ThumbVisible = PlacementOperation.GetRealElementSize(parent.AdornedElement).Width > 14;
}
else if (checkHeight)
{
this.ThumbVisible = PlacementOperation.GetRealElementSize(parent.AdornedElement).Height > 14;
}
}
return(base.ArrangeOverride(arrangeBounds));
}
/// <summary/>
protected override Size MeasureOverride(Size availableSize)
{
if (this.AdornedElement != null)
{
foreach (DependencyObject v in base.InternalChildren)
{
UIElement e = v as UIElement;
if (e != null)
{
e.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
}
}
return(PlacementOperation.GetRealElementSize(this.AdornedElement));
}
else
{
return(base.MeasureOverride(availableSize));
}
}
public override Rect GetPosition(PlacementOperation operation, DesignItem item)
{
UIElement child = item.View;
if (child == null)
{
return(Rect.Empty);
}
double x, y;
if (IsPropertySet(child, Canvas.LeftProperty) || !IsPropertySet(child, Canvas.RightProperty))
{
x = GetCanvasProperty(child, Canvas.LeftProperty);
}
else
{
x = extendedComponent.ActualWidth - GetCanvasProperty(child, Canvas.RightProperty) -
PlacementOperation.GetRealElementSize(child).Width;
}
if (IsPropertySet(child, Canvas.TopProperty) || !IsPropertySet(child, Canvas.BottomProperty))
{
y = GetCanvasProperty(child, Canvas.TopProperty);
}
else
{
y = extendedComponent.ActualHeight - GetCanvasProperty(child, Canvas.BottomProperty) -
PlacementOperation.GetRealElementSize(child).Height;
}
var p = new Point(x, y);
//Fixes, Empty Image Resized to 0
//return new Rect(p, child.RenderSize);
return(new Rect(p, PlacementOperation.GetRealElementSize(item.View)));
}
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
return(PlacementOperation.GetRealElementSize((UIElement)values[0]).Height);
}
/// <summary>
/// Binds the <see cref="MarginHandle.HandleLength"/> to the margin and place the handles.
/// </summary>
void BindAndPlaceHandle()
{
if (!adornerPanel.Children.Contains(this))
{
adornerPanel.Children.Add(this);
}
if (!adornerPanel.Children.Contains(Stub))
{
adornerPanel.Children.Add(Stub);
}
RelativePlacement placement = new RelativePlacement();
switch (orientation)
{
case HandleOrientation.Left:
{
var wr = (double)leftDescriptor.GetValue(adornedControl);
if (double.IsNaN(wr))
{
wr = (double)rightDescriptor.GetValue(adornedControl);
wr = canvas.ActualWidth - (PlacementOperation.GetRealElementSize(adornedControl).Width + wr);
}
else
{
if (line1 != null)
{
line1.StrokeDashArray.Clear();
line2.StrokeDashArray.Clear();
}
}
this.HandleLength = wr;
placement = new RelativePlacement(HorizontalAlignment.Left, VerticalAlignment.Center);
placement.XOffset = -HandleLengthOffset;
break;
}
case HandleOrientation.Top:
{
var wr = (double)topDescriptor.GetValue(adornedControl);
if (double.IsNaN(wr))
{
wr = (double)bottomDescriptor.GetValue(adornedControl);
wr = canvas.ActualHeight - (PlacementOperation.GetRealElementSize(adornedControl).Height + wr);
}
else
{
if (line1 != null)
{
line1.StrokeDashArray.Clear();
line2.StrokeDashArray.Clear();
}
}
this.HandleLength = wr;
placement = new RelativePlacement(HorizontalAlignment.Center, VerticalAlignment.Top);
placement.YOffset = -HandleLengthOffset;
break;
}
case HandleOrientation.Right:
{
var wr = (double)rightDescriptor.GetValue(adornedControl);
if (double.IsNaN(wr))
{
wr = (double)leftDescriptor.GetValue(adornedControl);
wr = canvas.ActualWidth - (PlacementOperation.GetRealElementSize(adornedControl).Width + wr);
}
else
{
if (line1 != null)
{
line1.StrokeDashArray.Clear();
line2.StrokeDashArray.Clear();
}
}
this.HandleLength = wr;
placement = new RelativePlacement(HorizontalAlignment.Right, VerticalAlignment.Center);
placement.XOffset = HandleLengthOffset;
break;
}
case HandleOrientation.Bottom:
{
var wr = (double)bottomDescriptor.GetValue(adornedControl);
if (double.IsNaN(wr))
{
wr = (double)topDescriptor.GetValue(adornedControl);
wr = canvas.ActualHeight - (PlacementOperation.GetRealElementSize(adornedControl).Height + wr);
}
else
{
if (line1 != null)
{
line1.StrokeDashArray.Clear();
line2.StrokeDashArray.Clear();
}
}
this.HandleLength = wr;
placement = new RelativePlacement(HorizontalAlignment.Center, VerticalAlignment.Bottom);
placement.YOffset = HandleLengthOffset;
break;
}
}
AdornerPanel.SetPlacement(this, placement);
this.Visibility = Visibility.Visible;
}
private void OnMouseDown(object sender, MouseButtonEventArgs e)
{
e.Handled = true;
var row = (int)this.ExtendedItem.Properties.GetAttachedProperty(Grid.RowProperty).ValueOnInstance;
var rowSpan = (int)this.ExtendedItem.Properties.GetAttachedProperty(Grid.RowSpanProperty).ValueOnInstance;
var column = (int)this.ExtendedItem.Properties.GetAttachedProperty(Grid.ColumnProperty).ValueOnInstance;
var columnSpan = (int)this.ExtendedItem.Properties.GetAttachedProperty(Grid.ColumnSpanProperty).ValueOnInstance;
var margin = (Thickness)this.ExtendedItem.Properties[FrameworkElement.MarginProperty].ValueOnInstance;
var point = this.ExtendedItem.View.TranslatePoint(new Point(), _grid);
var position = new Rect(point, PlacementOperation.GetRealElementSize(this.ExtendedItem.View));
MarginHandle handle = null;
if (sender is MarginHandle)
{
handle = sender as MarginHandle;
}
if (sender is MarginStub)
{
handle = ((MarginStub)sender).Handle;
}
if (handle != null)
{
switch (handle.Orientation)
{
case HandleOrientation.Left:
if (_rightHandle.Visibility == Visibility.Visible)
{
if (_leftHandle.Visibility == Visibility.Visible)
{
margin.Left = 0;
this.ExtendedItem.Properties[FrameworkElement.WidthProperty].SetValue(position.Width);
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].SetValue(HorizontalAlignment.Right);
}
else
{
var leftMargin = position.Left - GetColumnOffset(column);
margin.Left = leftMargin;
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].Reset();
this.ExtendedItem.Properties[FrameworkElement.WidthProperty].Reset();
}
}
else
{
if (_leftHandle.Visibility == Visibility.Visible)
{
margin.Left = 0;
var rightMargin = GetColumnOffset(column + columnSpan) - position.Right;
margin.Right = rightMargin;
this.ExtendedItem.Properties[FrameworkElement.WidthProperty].SetValue(position.Width);
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].SetValue(HorizontalAlignment.Right);
}
else
{
var leftMargin = position.Left - GetColumnOffset(column);
margin.Left = leftMargin;
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].SetValue(HorizontalAlignment.Left);
}
}
break;
case HandleOrientation.Top:
if (_bottomHandle.Visibility == Visibility.Visible)
{
if (_topHandle.Visibility == Visibility.Visible)
{
margin.Top = 0;
this.ExtendedItem.Properties[FrameworkElement.HeightProperty].SetValue(position.Height);
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].SetValue(VerticalAlignment.Bottom);
}
else
{
var topMargin = position.Top - GetRowOffset(row);
margin.Top = topMargin;
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].Reset();
this.ExtendedItem.Properties[FrameworkElement.HeightProperty].Reset();
}
}
else
{
if (_topHandle.Visibility == Visibility.Visible)
{
margin.Top = 0;
var bottomMargin = GetRowOffset(row + rowSpan) - position.Bottom;
margin.Bottom = bottomMargin;
this.ExtendedItem.Properties[FrameworkElement.HeightProperty].SetValue(position.Height);
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].SetValue(VerticalAlignment.Bottom);
}
else
{
var topMargin = position.Top - GetRowOffset(row);
margin.Top = topMargin;
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].SetValue(VerticalAlignment.Top);
}
}
break;
case HandleOrientation.Right:
if (_leftHandle.Visibility == Visibility.Visible)
{
if (_rightHandle.Visibility == Visibility.Visible)
{
margin.Right = 0;
this.ExtendedItem.Properties[FrameworkElement.WidthProperty].SetValue(position.Width);
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].SetValue(HorizontalAlignment.Left);
}
else
{
var rightMargin = GetColumnOffset(column + columnSpan) - position.Right;
margin.Right = rightMargin;
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].Reset();
this.ExtendedItem.Properties[FrameworkElement.WidthProperty].Reset();
}
}
else
{
if (_rightHandle.Visibility == Visibility.Visible)
{
margin.Right = 0;
var leftMargin = position.Left - GetColumnOffset(column);
margin.Left = leftMargin;
this.ExtendedItem.Properties[FrameworkElement.WidthProperty].SetValue(position.Width);
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].SetValue(HorizontalAlignment.Left);
}
else
{
var rightMargin = GetColumnOffset(column + columnSpan) - position.Right;
margin.Right = rightMargin;
this.ExtendedItem.Properties[FrameworkElement.HorizontalAlignmentProperty].SetValue(HorizontalAlignment.Right);
}
}
break;
case HandleOrientation.Bottom:
if (_topHandle.Visibility == Visibility.Visible)
{
if (_bottomHandle.Visibility == Visibility.Visible)
{
margin.Bottom = 0;
this.ExtendedItem.Properties[FrameworkElement.HeightProperty].SetValue(position.Height);
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].SetValue(VerticalAlignment.Top);
}
else
{
var bottomMargin = GetRowOffset(row + rowSpan) - position.Bottom;
margin.Bottom = bottomMargin;
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].Reset();
this.ExtendedItem.Properties[FrameworkElement.HeightProperty].Reset();
}
}
else
{
if (_bottomHandle.Visibility == Visibility.Visible)
{
margin.Bottom = 0;
var topMargin = position.Top - GetRowOffset(row);
margin.Top = topMargin;
this.ExtendedItem.Properties[FrameworkElement.HeightProperty].SetValue(position.Height);
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].SetValue(VerticalAlignment.Top);
}
else
{
var bottomMargin = GetRowOffset(row + rowSpan) - position.Bottom;
margin.Bottom = bottomMargin;
this.ExtendedItem.Properties[FrameworkElement.VerticalAlignmentProperty].SetValue(VerticalAlignment.Bottom);
}
}
break;
}
}
this.ExtendedItem.Properties[FrameworkElement.MarginProperty].SetValue(margin);
}