private void OnPreviewMouseMoveWhileCaptured(object sender, MouseEventArgs e)
{
if (e.LeftButton != MouseButtonState.Pressed)
{
if (!((Mouse.Captured is ComboBox && ((ComboBox)Mouse.Captured).IsDropDownOpen))) //Combo boxes require non-pressed capture behaviour while popped up to work properly.
{
if (Mouse.Captured != null)
{
Mouse.Captured.ReleaseMouseCapture();
}
OnLostMouseCapture(e);
}
}
else
{
//Shift the mouse with the panel being moved, so that the resize remains relative to it.
ArtPanel panel = GetArtPanel(e.OriginalSource);
if (panel != null)
{
panel.BringIntoView(); //Ensure the panel remains in view
Point newOffset = panel.TranslatePoint(new Point(), this);
Vector offsetDelta = newOffset - mPanelResizeDragOffset;
if (offsetDelta.Length > 1)
{
MoveMousePosition(offsetDelta);
mPanelResizeDragOffset = newOffset;
e.Handled = true;
}
}
}
}
protected override void OnLostMouseCapture(MouseEventArgs e)
{
base.OnLostMouseCapture(e);
PreviewMouseMove -= OnPreviewMouseMoveWhileCaptured;
Suspended = false;
ArtPanel panel = GetArtPanel(e.OriginalSource);
if (panel != null)
{
if (panel.Parent == null)
{
//The panel has been removed (probably due to image size changed), so find the new panel for that album art, and bring that into view instead
ContentPresenter contentPresenter = ItemContainerGenerator.ContainerFromItem(panel.AlbumArt) as ContentPresenter;
if (contentPresenter != null)
{
contentPresenter.BringIntoView();
}
}
else
{
panel.BringIntoView(); //Ensure the panel remains in view
}
}
}