// コンストラクタ / ドラッグ開始
public NodeDragController(NodeDragControllerSetupArgs setupArgs)
{
if (setupArgs.Args.LeftButton == MouseButtonState.Pressed)
{
_isDrag = true;
_dragStartPos = setupArgs.Args.GetPosition(setupArgs.BaseControl);
_originalPoints = setupArgs.Nodes.ToDictionary(x => x, x => new Point(x.X, x.Y));
}
_completedNodeMove = setupArgs.CompletedCommand;
_selectedNodes = setupArgs.Nodes;
_useSnapGrid = setupArgs.UseSnapGrid;
_inputElement = setupArgs.BaseControl;
_gridSize = setupArgs.GridSize;
if (_selectedNodes.Any())
{
var control = _selectedNodes.First().FindVisualParentWithType <InfiniteScrollViewer>();
if (Mouse.Captured == null)
{
_isCaptured = _inputElement.CaptureMouse();
}
_scrollViewer = control;
}
}
private void update_thumb(Thumb thumb, InfiniteScrollViewer scrollViewer)
{
var rect = NetworkView.ItemsRect.ValidateRect(ActualWidth, ActualHeight).ToOffset(scrollViewer.ViewRectOffset);
var point = scrollViewer.TransformPoint(0, 0);
Canvas.SetLeft(thumb, point.X / (rect.Width / MiniMap.Width));
Canvas.SetTop(thumb, point.Y / (rect.Height / MiniMap.Height));
}
//! 最低限の引数はコンストラクタでセットアップする必要がある
public NodeDragControllerSetupArgs(IInputElement baseControl,
INodeControl[] nodes,
ICommand completedCommand = null,
InfiniteScrollViewer scrollViewer = null)
{
BaseControl = baseControl;
Nodes = nodes;
CompletedCommand = completedCommand;
InfiniteScrollViewer = scrollViewer;
}
// コンストラクタ / ドラッグ開始
public NodesDragController(NodeDragControllerSetupArgs setupArgs)
{
_originalPoints = setupArgs.Nodes.ToDictionary(x => x, x => new Point(x.X, x.Y));
_completedNodeMove = setupArgs.CompletedCommand;
_selectedNodes = setupArgs.Nodes.Where(x => x.CanMovable).ToArray();
_useSnapGrid = setupArgs.UseSnapGrid;
_gridSize = setupArgs.GridSize;
_inputElement = setupArgs.BaseControl;
_scrollViewer = setupArgs.InfiniteScrollViewer;
}
public static void Scale(this InfiniteScrollViewer self, double scale, double centerX, double centerY)
{
var d0 = self.TransformPoint(centerX, centerY);
self.ScaleMatrix.ScaleX = scale;
self.ScaleMatrix.ScaleY = scale;
var d1 = self.TransformPoint(centerX, centerY);
var diff = d1 - d0;
self.TranslateMatrix.X += diff.X * scale;
self.TranslateMatrix.Y += diff.Y * scale;
}
public ViewportDrag(NetworkView networkView, MouseEventArgs mouseEventArgs)
{
PrevPosition = mouseEventArgs.GetPosition(networkView);
NetworkView = networkView;
_scrollViewer = NetworkView.FindChild <InfiniteScrollViewer>(x => true);
}
public ViewportDragController(NetworkView networkView)
{
NetworkView = networkView;
_scrollViewer = NetworkView.FindChild <InfiniteScrollViewer>(x => true);
}
public static Point TransformPoint(this InfiniteScrollViewer self, double x, double y)
{
return(new Point(
(x - self.TranslateMatrix.X) / self.ScaleMatrix.ScaleX,
(y - self.TranslateMatrix.Y) / self.ScaleMatrix.ScaleY));
}
