private void createNewDiagram(Canvas canvas, string tabName)
{
if (canvas == null)
{
canvas = new ScrollableCanvas();
}
ClosableTabItem theTabItem = new ClosableTabItem();
ScrollViewer scrollViewer = new ScrollViewer();
canvas.Background = Brushes.Transparent;
canvas.MouseDown += OnMouseDown;
canvas.MouseLeftButtonDown += Canvas_MouseLeftButtonDown;
canvas.MouseRightButtonDown += Canvas_MouseRightButtonDown;
scrollViewer.VerticalScrollBarVisibility = ScrollBarVisibility.Visible;
scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Visible;
scrollViewer.Content = canvas;
theTabItem.IsSelected = true;
theTabItem.Content = scrollViewer;
theTabItem.Title = tabName;
tabs.Items.Add(theTabItem);
tabs.SelectionChanged += TabControl_SelectionChanged;
attachContextMenu(canvas);
currentCanvas = canvas;
}
public void Shape_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
Mouse.Capture(null);
captured = false;
//Сюда необходимо вставить персчет размер канваса для увелечения скрола или наоборот
//ModelChanged();
//currentCanvas.UpdateLayout();
ScrollableCanvas scCanvas = currentCanvas as ScrollableCanvas;
double bottomMost = 0d;
double rightMost = 0d;
foreach (object obj in scCanvas.Children)
{
FrameworkElement child = obj as FrameworkElement;
if (child != null)
{
child.Measure(new Size(10, 10));
bottomMost = Math.Max(bottomMost, VisualTreeHelper.GetOffset(child).Y + child.DesiredSize.Height);
rightMost = Math.Max(rightMost, VisualTreeHelper.GetOffset(child).X + child.DesiredSize.Width);
}
}
//currentCanvas.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
currentCanvas.RenderSize = new Size(rightMost, bottomMost);
scCanvas.RenderSize = new Size(rightMost, bottomMost);
ModelChanged();
currentCanvas.UpdateLayout();
}
private void OnMouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (currentEntity != null && e.LeftButton == MouseButtonState.Pressed)
{
if (currentEntity is ConnectionLine && selected != null && selected is Port)
{
connect();
}
else if (currentEntity is SubDiagram)
{
SubDiagram sd = currentEntity as SubDiagram;
ScrollableCanvas sc = currentCanvas as ScrollableCanvas;
if (sc.Equals(sc, sd.ProjectItem.Canvas as ScrollableCanvas))
{
currentEntity = null;
MessageBox.Show("Нельзя добавить процесс к самому себе");
}
else
{
UndoRedoManager.putInUndoStack((ScrollableCanvas)currentCanvas);
UndoRedoManager.clearRedoStack((ScrollableCanvas)currentCanvas);
sd.canvas = currentCanvas;
drawOnCanvas(e.GetPosition(this));
}
}
else if (!(currentEntity is ConnectionLine))
{
UndoRedoManager.putInUndoStack((ScrollableCanvas)currentCanvas);
UndoRedoManager.clearRedoStack((ScrollableCanvas)currentCanvas);
drawOnCanvas(e.GetPosition(this));
}
}
}
private void RedoComand(object sender, ExecutedRoutedEventArgs e)
{
ScrollableCanvas canvas = (ScrollableCanvas)currentCanvas;
Project instance = Project.Instance;
ProjectItem projectItem = instance.byCanvas((ScrollableCanvas)canvas);
ScrollableCanvas storedCanvas = UndoRedoManager.redoProceed(canvas.id);
if (storedCanvas != null)
{
UndoRedoManager.putInUndoStack((ScrollableCanvas)currentCanvas);
// Simple changing canvas dosen't work
// Elements can't be children in two canvas, so we have to store it and clear stored canvas
// Also we need to change canvas in elements
List <UIElement> elements = new List <UIElement>();
foreach (UIElement elem in storedCanvas.Children)
{
elements.Add(elem);
}
storedCanvas.Children.Clear();
currentCanvas.Children.Clear();
foreach (UIElement elem in elements)
{
((UIEntity)elem).canvas = currentCanvas;
currentCanvas.Children.Add(elem);
}
}
}
public static void clearRedoStack(ScrollableCanvas scrollableCanvas)
{
long id = scrollableCanvas.id;
if (redoStack.ContainsKey(id))
{
redoStack[id].Clear();
}
}
private ClosableTabItem findTabItem(ProjectItem item)
{
foreach (ClosableTabItem ti in tabs.Items)
{
ScrollableCanvas sc = (ti.Content as ScrollViewer).Content as ScrollableCanvas;
ProjectItem pi = Project.Instance.byCanvas(sc);
if (pi.Equals(item))
{
return(ti);
}
}
return(null);
}
public override bool Equals(object obj)
{
if (obj == null)
{
return(false);
}
if (obj.GetType() != typeof(ProjectItem))
{
return(false);
}
ProjectItem another = obj as ProjectItem;
// C#...
ScrollableCanvas thisCanvas = canvas as ScrollableCanvas;
ScrollableCanvas anotherCanvas = another.Canvas as ScrollableCanvas;
return(thisCanvas.Equals(thisCanvas, anotherCanvas));
}
private static void putInStack(ScrollableCanvas scrollableCanvas, Dictionary <long, FixedSizedStack <byte[]> > stack)
{
long id = scrollableCanvas.id;
Stream stream = new MemoryStream();
new BinaryFormatter().Serialize(stream, scrollableCanvas);
if (stack.ContainsKey(id))
{
FixedSizedStack <byte[]> fsq = stack[id];
fsq.Push(StreamUtils.ReadFromStream(stream));
}
else
{
FixedSizedStack <byte[]> fsq = new FixedSizedStack <byte[]>();
fsq.Push(StreamUtils.ReadFromStream(stream));
stack.Add(id, fsq);
}
}
public static void clearRedoStack(UIEntity selected)
{
ScrollableCanvas canvas = (ScrollableCanvas)selected.canvas;
clearRedoStack(canvas);
}
public static void putInRedoStack(ScrollableCanvas scrollableCanvas)
{
putInStack(scrollableCanvas, redoStack);
}
public static void putInUndoStack(UIEntity selected)
{
ScrollableCanvas canvas = (ScrollableCanvas)selected.canvas;
putInUndoStack(canvas);
}
public ProjectItem byCanvas(ScrollableCanvas canvas)
{
return(items.Where(i => canvas.Equals(i.Canvas as ScrollableCanvas, canvas)).First());
}