// Arrange the Adorners.
protected override Size ArrangeOverride(Size finalSize)
{
// desiredWidth and desiredHeight are the width and height of the element that's being adorned.
// These will be used to place the ResizingAdorner at the corners of the adorned element.
var bbb = CurrentEditor.GetMoleculeBoundingBox(AdornedMolecules);
if (LastOperation != null)
{
bbb = LastOperation.TransformBounds(bbb);
}
//put a box right around the entire shebang
BigThumb.Arrange(bbb);
Canvas.SetLeft(BigThumb, bbb.Left);
Canvas.SetTop(BigThumb, bbb.Top);
BigThumb.Height = bbb.Height;
BigThumb.Width = bbb.Width;
// Return the final size.
return(finalSize);
}
// Arrange the Adorners.
protected override Size ArrangeOverride(Size finalSize)
{
// desiredWidth and desiredHeight are the width and height of the element that's being adorned.
// These will be used to place the ResizingAdorner at the corners of the adorned element.
var bbb = CurrentEditor.GetMoleculeBoundingBox(AdornedMolecules);
if (LastOperation != null)
{
bbb = LastOperation.TransformBounds(bbb);
}
TopLeftHandle.Arrange(new Rect(bbb.Left - _halfThumbWidth, bbb.Top - _halfThumbWidth, _thumbWidth.Value,
_thumbWidth.Value));
TopRightHandle.Arrange(new Rect(bbb.Left + bbb.Width - _halfThumbWidth, bbb.Top - _halfThumbWidth,
_thumbWidth.Value,
_thumbWidth.Value));
BottomLeftHandle.Arrange(new Rect(bbb.Left - _halfThumbWidth, bbb.Top + bbb.Height - _halfThumbWidth,
_thumbWidth.Value, _thumbWidth.Value));
BottomRightHandle.Arrange(new Rect(bbb.Left + bbb.Width - _halfThumbWidth,
bbb.Height + bbb.Top - _halfThumbWidth, _thumbWidth.Value,
_thumbWidth.Value));
//add the rotator
_xPlacement = (bbb.Left + bbb.Right) / 2;
_yPlacement = bbb.Top - RotateHandle.Height * 3;
_rotateThumbPos = new Point(_xPlacement, _yPlacement);
if (BigThumb.IsDragging ||
TopLeftHandle.IsDragging ||
TopRightHandle.IsDragging ||
BottomLeftHandle.IsDragging ||
BottomRightHandle.IsDragging)
{
RotateHandle.Visibility = Visibility.Hidden;
}
else
{
RotateHandle.Visibility = Visibility.Visible;
SetCentroid();
}
if (Rotating && LastOperation != null)
{
_rotateThumbPos = LastOperation.Transform(_rotateThumbPos);
}
Vector rotateThumbTweak = new Vector(-RotateHandle.Width / 2, -RotateHandle.Height / 2);
Point newLoc = _rotateThumbPos + rotateThumbTweak;
if (Rotating && LastOperation != null)
{
TopLeftHandle.Visibility = Visibility.Collapsed;
TopRightHandle.Visibility = Visibility.Collapsed;
BottomLeftHandle.Visibility = Visibility.Collapsed;
BottomRightHandle.Visibility = Visibility.Collapsed;
BigThumb.Visibility = Visibility.Collapsed;
}
else
{
TopLeftHandle.Visibility = Visibility.Visible;
TopRightHandle.Visibility = Visibility.Visible;
BottomLeftHandle.Visibility = Visibility.Visible;
BottomRightHandle.Visibility = Visibility.Visible;
BigThumb.Visibility = Visibility.Visible;
}
RotateHandle.Arrange(new Rect(newLoc.X, newLoc.Y, RotateHandle.Width, RotateHandle.Height));
base.ArrangeOverride(finalSize);
return(finalSize);
}
private void SetCentroid()
{
_centroid = GetCentroid(CurrentEditor.GetMoleculeBoundingBox(AdornedMolecules));
_rotateSnapper = new Snapper(_centroid, CurrentEditor.Chemistry as EditViewModel);
}
private void SetBoundingBox()
{
BoundingBox = CurrentEditor.GetMoleculeBoundingBox(AdornedMolecules);
//and work out the aspect ratio for later resizing
AspectRatio = BoundingBox.Width / BoundingBox.Height;
}
private void SetCentroid()
{
_centroid = BasicGeometry.GetCentroid(CurrentEditor.GetMoleculeBoundingBox(AdornedMolecules));
_rotateSnapper = new Snapper(_centroid, CurrentEditor.ViewModel as EditViewModel);
}