// 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;
}
}
public IDragController Build()
{
var setupArgs = new NodeDragControllerSetupArgs(
_dragControllerBuilder.InputElement,
_dragControllerBuilder.SelectedNodes,
_dragControllerBuilder.CompletedNodeDragCommand,
ScrollViewer)
{
GridSize = SnapGridSize,
UseSnapGrid = UseSnapGrid,
};
return(new NodesDragController(setupArgs));
}
