/// <summary>
/// Set the new position in the placement
/// </summary>
public void Commit(MoveMouseHandler handler)
{
var location = lastCommitLocation;
var rect = GetNewBounds(handler);
var dx = rect.X - location.X;
var dy = rect.Y - location.Y;
handler.Move(placement, dx, dy);
lastCommitLocation = newLocation;
}
/// <summary>
/// Gets the new bounds of the placement.
/// </summary>
public Rectangle GetNewBounds(MoveMouseHandler handler)
{
var newBounds = new Rectangle(newLocation, placement.Item.Size);
// Snap to other items
// First try top-left
var pt = new Point(newBounds.Left, newBounds.Top);
var sPt = handler.SnapPoint(pt);
var snappedX = false;
var snappedY = false;
if (pt.X != sPt.X)
{
// Snap to left
newBounds.X = sPt.X;
snappedX = true;
}
if (pt.Y != sPt.Y)
{
// Snap to top
newBounds.Y = sPt.Y;
snappedY = true;
}
// Now try bottom-right
if (!(snappedX && snappedY))
{
pt = new Point(newBounds.Right, newBounds.Bottom);
sPt = handler.SnapPoint(pt);
if ((!snappedX) && (pt.X != sPt.X))
{
// Snap to right
newBounds.X = sPt.X - newBounds.Width;
}
if ((!snappedY) && (pt.Y != sPt.Y))
{
// Snap to bottom
newBounds.Y = sPt.Y - newBounds.Height;
}
}
return(newBounds);
}
/// <summary>
/// Move the placement
/// </summary>
public void Move(float dx, float dy, MoveMouseHandler handler)
{
var pt = handler.LimitMoveToPosition(new Point((int)(startLocation.X + dx), (int)(startLocation.Y + dy)));
newLocation = pt;
}