/// <summary>
/// Resizes the window by the top left corner of the window.
/// </summary>
/// <param name="dx">Increment by X-coordinate.</param>
/// <param name="dy">Increment by Y-coordinate.</param>
private void ResizeTopLeft(double dx, double dy)
{
Rect newBounds = new Rect(initialPosition.Add(dx, dy), initialSize);
Point point = element.SnapinController.SnapTopLeftCorner(newBounds).EnsureInBounds(bounds);
// If only one coordinate was changed - restore the other after snap in
if (dx == 0)
point.X = newBounds.Position().X;
if (dy == 0)
point.Y = newBounds.Position().Y;
element.Position = point;
Point lowerRight = initialPosition.Add(initialSize);
element.Width = lowerRight.X - point.X;
element.Height = lowerRight.Y - point.Y;
}
/// <summary>
/// Returns new position of the specified rectangle
/// taking into account bounds the rectangle can be attracted to.
/// </summary>
/// <param name="rect">The rectangle.</param>
/// <returns>New position.</returns>
public Point SnapRectangle(Rect rect)
{
Point point = rect.Position();
if (SnapinEnabled)
{
Distance minDistance = new Distance();
foreach (var bound in SnapinBounds)
{
Distance distance = DistanceBetweenRectangles(rect, bound);
minDistance = Distance.Min(distance, minDistance);
}
point = point.Add(minDistance);
}
return point;
}
/// <summary>
/// Snaps the upper left corner of the specified rectangle to the nearest bounds.
/// </summary>
/// <param name="rect">The rectangle.</param>
/// <returns>New position.</returns>
public Point SnapTopLeftCorner(Rect rect)
{
Point point = rect.Position();
if (SnapinEnabled)
{
Distance minDistance = new Distance();
foreach (var bound in SnapinBounds)
{
Distance distance = new Distance()
{
X = DistanceBetweenLeftEdgeAndRectangle(rect, bound),
Y = DistanceBetweenTopEdgeAndRectangle(rect, bound)
};
minDistance = Distance.Min(distance, minDistance);
}
point = point.Add(minDistance);
}
return point;
}
/// <summary>
/// Moves and resizes the object.
/// </summary>
/// <param name="target">The target object.</param>
/// <param name="position">Ending position.</param>
/// <param name="width">New width.</param>
/// <param name="height">New height.</param>
/// <param name="milliseconds">Duration of the animation in milliseconds.</param>
/// <param name="completed">Event handler called when animation completed.</param>
public static void MoveAndResize(this DependencyObject target, Rect bounds,
double milliseconds, EventHandler completed = null)
{
//target.MoveAndResize(bounds.Position, bounds.Width, bounds.Height, milliseconds, completed); //!!! seems we cannot assume an extension method is defined and use it if it's in the same class
MoveAndResize(target, bounds.Position(), bounds.Width, bounds.Height, milliseconds, completed); //!!! strangely we can't use "bounds.Position", compiler says "Can't convert from method group to Point"
}