// Called whenever thumb dragged (window resizing)
void Thumb_DragDelta(object sender, DragDeltaEventArgs e)
{
WindowThumb thumb = (WindowThumb)sender;
// calculate mouse delta
Point position = PointToScreen(Mouse.GetPosition(_window));
double deltaX = position.X - _mouseStartPosition.X;
double deltaY = position.Y - _mouseStartPosition.Y;
// horizontal resize
if ((thumb.Position & Position.Left) == Position.Left)
{
this.SetWindowWidth(_windowStartSize.Width - deltaX);
_window.Left = _windowStartPosition.X + deltaX;
}
else if ((thumb.Position & Position.Right) == Position.Right)
{
this.SetWindowWidth(_windowStartSize.Width + deltaX);
}
// vertical resize
if ((thumb.Position & Position.Top) == Position.Top)
{
this.SetWindowHeight(_windowStartSize.Height - deltaY);
_window.Top = _windowStartPosition.Y + deltaY;
}
else if ((thumb.Position & Position.Bottom) == Position.Bottom)
{
this.SetWindowHeight(_windowStartSize.Height + deltaY);
}
}
// called when thumb drag started (window resize started)
void Thumb_DragStarted(object sender, DragStartedEventArgs e)
{
WindowThumb thumb = (WindowThumb)sender;
// store settings of the window, will be used to resize and move the window
_mouseStartPosition = PointToScreen(Mouse.GetPosition(_window));
_windowStartPosition = new Point(_window.Left, _window.Top);
_windowStartSize = new Size(_window.Width, _window.Height);
}
/// <summary>
/// Auxilliary method for creating thumbs
/// </summary>
/// <param name="position">Thumb position in the window</param>
/// <returns>Returns created WindowThumb</returns>
WindowThumb CreateThumb(Position position, Cursor cursor)
{
WindowThumb thumb = new WindowThumb();
thumb.Position = position;
thumb.DragStarted += new DragStartedEventHandler(Thumb_DragStarted);
thumb.DragDelta += new DragDeltaEventHandler(Thumb_DragDelta);
thumb.Cursor = cursor;
visualChildren.Add(thumb);
return thumb;
}
/// <summary>
/// Auxilliary method for creating thumbs
/// </summary>
/// <param name="position">Thumb position in the window</param>
/// <returns>Returns created WindowThumb</returns>
WindowThumb CreateThumb(Position position, Cursor cursor)
{
WindowThumb thumb = new WindowThumb();
thumb.Position = position;
thumb.DragStarted += new DragStartedEventHandler(Thumb_DragStarted);
thumb.DragDelta += new DragDeltaEventHandler(Thumb_DragDelta);
thumb.Cursor = cursor;
visualChildren.Add(thumb);
return(thumb);
}
