private void MoveThumb_DragStarted(object sender, DragStartedEventArgs e)
{
designerItem = DataContext as DesignerItem;
if (designerItem != null)
{
var pos = Mouse.GetPosition(designerItem);
offsetX = pos.X;
offsetY = pos.Y;
}
}
public ResizeRotateAdorner(DesignerItem designerItem) : base(designerItem)
{
SnapsToDevicePixels = true;
chrome = new ResizeRotateControl
{
DataContext = designerItem
};
visuals = new VisualCollection(this)
{
chrome
};
}
private void RotateThumb_DragStarted(object sender, DragStartedEventArgs e)
{
designerItem = DataContext as DesignerItem;
if (designerItem != null)
{
centerPoint = designerItem.TranslatePoint(
new Point(designerItem.Width * designerItem.RenderTransformOrigin.X,
designerItem.Height * designerItem.RenderTransformOrigin.Y),
designerItem.DesignerCanvas);
Point startPoint = Mouse.GetPosition(designerItem.DesignerCanvas);
startVector = Point.Subtract(startPoint, centerPoint);
}
}
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
string xamlString = e.Data.GetData("DESIGNER_ITEM") as string;
if (!String.IsNullOrEmpty(xamlString))
{
DesignerItem newItem = null;
if (XamlReader.Load(XmlReader.Create(new StringReader(xamlString))) is FrameworkElement content)
{
newItem = new DesignerItem
{
Content = content,
DesignerCanvas = this
};
var pos = e.GetPosition(this);
if (content.MinHeight != 0 && content.MinWidth != 0)
{
newItem.Width = content.MinWidth * 2;
newItem.Height = content.MinHeight * 2;
}
else
{
newItem.Width = DefaultValues.ItemDefaultWidth;
newItem.Height = DefaultValues.ItemDefaultHeight;
}
DesignerCanvas.SetLeft(newItem, Math.Max(0, pos.X - newItem.Width / 2));
DesignerCanvas.SetTop(newItem, Math.Max(0, pos.Y - newItem.Height / 2));
Children.Add(newItem);
newItem.Position = new Point(DesignerCanvas.GetLeft(newItem), DesignerCanvas.GetTop(newItem));
DeselectAll();
newItem.IsSelected = true;
}
e.Handled = true;
}
}