public static Rect GetRect(BaseElementViewModel viewModel, double margin = 0)
{
Point point = new Point(viewModel.Left, viewModel.Top);
Size size = new Size(viewModel.Width, viewModel.Height);
var rect = new Rect(point, size);
rect.Inflate(margin, margin);
return(rect);
}
protected override void DoDrag(double x, double y)
{
BaseElementViewModel viewModel = (BaseElementViewModel)DataContext;
if (viewModel.IsSelected)
{
viewModel.Left = x - DragStartPoint.X;
viewModel.Top = y - DragStartPoint.Y;
}
}
public override void Revert()
{
Type viewModelType = BaseElementViewModel.GetType();
PropertyInfo property = viewModelType.GetProperty(_propertyName);
if (property != null)
{
property.SetValue(BaseElementViewModel, _oldValue);
}
}
private void TextAreaOnPreviewMouseDown(object sender, MouseButtonEventArgs e)
{
if (e.ChangedButton == MouseButton.Left)
{
if (e.ClickCount == 1)
{
BaseElementViewModel viewModel = (BaseElementViewModel)DataContext;
viewModel.IsSelected = true;
}
}
}
private void BaseElementView_OnPreviewMouseDown(object sender, MouseButtonEventArgs e)
{
BaseElementViewModel viewModel = (BaseElementViewModel)DataContext;
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
viewModel.IsSelected = !viewModel.IsSelected;
}
else
{
viewModel.Select();
}
}
protected override void StopDrag()
{
BaseElementViewModel viewModel = (BaseElementViewModel)DataContext;
viewModel.StopMove();
}
private void ResizeThumb_DragStarted(object sender, DragStartedEventArgs e)
{
BaseElementViewModel viewModel = DataContext as BaseElementViewModel;
viewModel?.ResizeStart();
}
public ElementResizeAction(BaseElementViewModel baseElementViewModel, Rect from, Rect to) : base(baseElementViewModel)
{
Name = $"{BaseElementViewModel} resized";
_from = from;
_to = to;
}
public PropertyChangedAction(BaseElementViewModel viewModel, object oldValue, object newValue, string propertyName) : base(viewModel)
{
_oldValue = oldValue;
_newValue = newValue;
_propertyName = propertyName;
}
public SelectionChangedEventArgs(BaseElementViewModel selectedItem)
{
SelectedItem = selectedItem;
}
protected BaseElementAction(BaseElementViewModel baseElementViewModel)
{
BaseElementViewModel = baseElementViewModel;
}
public ElementMoveAction(BaseElementViewModel baseElementViewModel, Point from, Point to) : base(baseElementViewModel)
{
Name = $"Moved {BaseElementViewModel}";
_from = from;
_to = to;
}
