private void AssociatedObject_MouseDown(object sender, MouseButtonEventArgs e)
{
if (!IsResizable)
{
return;
}
if (_currentResizeGripDirection != ResizeGripDirection.None &&
e.ChangedButton == MouseButton.Left)
{
_isResizing = true;
var p = e.GetPosition(AssociatedObject);
_initialDx = _initialDx = 0;
switch (_currentResizeGripDirection)
{
case ResizeGripDirection.Right:
_initialDx = AssociatedObject.ActualWidth - p.X;
break;
case ResizeGripDirection.Left:
_initialDx = -p.X;
break;
case ResizeGripDirection.Top:
_initialDy = -p.Y;
break;
case ResizeGripDirection.Bottom:
_initialDy = AssociatedObject.ActualHeight - p.Y;
break;
case ResizeGripDirection.TopRight:
_initialDx = AssociatedObject.ActualWidth - p.X;
_initialDy = -p.Y;
break;
case ResizeGripDirection.BottomRight:
_initialDx = AssociatedObject.ActualWidth - p.X;
_initialDy = AssociatedObject.ActualHeight - p.Y;
break;
case ResizeGripDirection.BottomLeft:
_initialDy = AssociatedObject.ActualHeight - p.Y;
_initialDx = -p.X;
break;
case ResizeGripDirection.TopLeft:
_initialDy = -p.Y;
_initialDx = -p.X;
break;
}
DockablePanelWindowBehavior.DisableDockBehavior(AssociatedObject);
Mouse.Capture(AssociatedObject);
#if alldbg || dbg
DesktopPanelTool.Lib.Debug.WriteLine($"is resizing dx={InitialDx},dy={InitialDy} x={p.X},y={p.Y} (rgd={CurrentResizeGripDirection})");
#endif
}
}
private void AssociatedObject_MouseUp(object sender, MouseButtonEventArgs e)
{
if (e.ChangedButton == MouseButton.Left)
{
_currentResizeGripDirection = ResizeGripDirection.None;
if (_isResizing)
{
_isResizing = false;
_lastDragMoveTime = DateTime.Now;
Mouse.Capture(null);
AssociatedObject.Cursor = CursorDefault;
DockablePanelWindowBehavior.EnableDockBehavior(AssociatedObject);
#if alldbg || dbg
DesktopPanelTool.Lib.Debug.WriteLine($"not resizing");
#endif
}
}
}