protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
DragObject dragObject = e.Data.GetData(typeof(DragObject)) as DragObject;
if (dragObject != null && !String.IsNullOrEmpty(dragObject.Xaml))
{
//子流程的新建
if (dragObject.Xaml.Contains("子流程"))
{
FlowChar flowChar = new FlowChar();
string str1 = Directory.GetCurrentDirectory();
string Enclosure_Path = str1 + "\\FlowChar";
if (!Directory.Exists(Enclosure_Path)) // 返回bool类型，存在返回true，不存在返回false
{
Directory.CreateDirectory(Enclosure_Path); //不存在则创建路径
}
var filepath = Enclosure_Path + $"\\{DateTime.Now.ToString("yyyyMMddhhmmssMM")}" + ".xml";
flowChar.FlowcharPath = filepath;
flowChar.Flowname = "子流程1";
flowChar.IcoImage = "/WpfApp3;component/Image/flowchild.png";
flowChar.Flowtype = 1;
XElement root = new XElement("Root");
try
{
root.Save(filepath);
RememberClass rememberClass = this.Tag as RememberClass;
rememberClass.AddRemember(flowChar, false);
if (flowChar != null)
{
Grid grid = new Grid();
grid.Width = 80;
grid.Height = 70;
RowDefinition row1 = new RowDefinition();
RowDefinition row2 = new RowDefinition();
row2.Height = GridLength.Auto;
grid.RowDefinitions.Add(row1);
grid.RowDefinitions.Add(row2);
Image image = new Image();
image.Source = new BitmapImage(new Uri(flowChar.IcoImage, UriKind.RelativeOrAbsolute));
Button button = new Button();
button.Content = "编辑";
button.Margin = new Thickness(5, 2, 5, 2);
button.Tag = flowChar;
button.Click += OpenFlowChar;
grid.Children.Add(image);
grid.Children.Add(button);
Grid.SetRow(image, 0);
Grid.SetRow(button, 1);
DesignerItem newItem = null;
// Object content = XamlReader.Load(XmlReader.Create(new StringReader(dragObject.Xaml)));
newItem = new DesignerItem();
newItem.Content = grid;
Point position = e.GetPosition(this);
// Size desiredSize = dragObject.DesiredSize.Value;
newItem.Width = grid.Width;
newItem.Height = grid.Height;
DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X - newItem.Width / 2));
DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y - newItem.Height / 2));
//else
//{
// DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X));
// DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y));
//}
Canvas.SetZIndex(newItem, this.Children.Count);
this.Children.Add(newItem);
SetConnectorDecoratorTemplate(newItem);
//update selection
this.SelectionService.SelectItem(newItem);
newItem.Focus();
rememberClass.LoadFlowMD();
e.Handled = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
//基本流程
else
{
DesignerItem newItem = null;
Object content = XamlReader.Load(XmlReader.Create(new StringReader(dragObject.Xaml)));
if (content != null)
{
newItem = new DesignerItem();
newItem.Content = content;
Point position = e.GetPosition(this);
if (dragObject.DesiredSize.HasValue)
{
Size desiredSize = dragObject.DesiredSize.Value;
newItem.Width = desiredSize.Width;
newItem.Height = desiredSize.Height;
DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X - newItem.Width / 2));
DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y - newItem.Height / 2));
}
else
{
DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X));
DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y));
}
Canvas.SetZIndex(newItem, this.Children.Count);
this.Children.Add(newItem);
SetConnectorDecoratorTemplate(newItem);
//update selection
this.SelectionService.SelectItem(newItem);
newItem.Focus();
}
e.Handled = true;
}
}
else
{
FlowChar flowChar = e.Data.GetData(typeof(FlowChar)) as FlowChar;
if (flowChar != null)
{
Grid grid = new Grid();
grid.Width = 80;
grid.Height = 70;
RowDefinition row1 = new RowDefinition();
RowDefinition row2 = new RowDefinition();
row2.Height = GridLength.Auto;
grid.RowDefinitions.Add(row1);
grid.RowDefinitions.Add(row2);
Image image = new Image();
image.Source = new BitmapImage(new Uri(flowChar.IcoImage, UriKind.RelativeOrAbsolute));
Button button = new Button();
button.Content = "编辑";
button.Margin = new Thickness(5, 2, 5, 2);
button.Tag = flowChar;
button.Click += OpenFlowChar;
grid.Children.Add(image);
grid.Children.Add(button);
Grid.SetRow(image, 0);
Grid.SetRow(button, 1);
DesignerItem newItem = null;
// Object content = XamlReader.Load(XmlReader.Create(new StringReader(dragObject.Xaml)));
newItem = new DesignerItem();
newItem.Content = grid;
Point position = e.GetPosition(this);
// Size desiredSize = dragObject.DesiredSize.Value;
newItem.Width = grid.Width;
newItem.Height = grid.Height;
DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X - newItem.Width / 2));
DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y - newItem.Height / 2));
//else
//{
// DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X));
// DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y));
//}
Canvas.SetZIndex(newItem, this.Children.Count);
this.Children.Add(newItem);
SetConnectorDecoratorTemplate(newItem);
//update selection
this.SelectionService.SelectItem(newItem);
newItem.Focus();
e.Handled = true;
}
}
}