public LineBounds(CanvasShape canvasShape, LineShape lineShape)
{
_lineShape = lineShape;
_canvasShape = canvasShape;
_hitResult = HitResult.None;
_linePolygon = CreatePolygon(4);
_point1Polygon = CreatePolygon(4);
_point2Polygon = CreatePolygon(4);
_rectangleShape = new RectangleShape();
}
public LineTool(CanvasShape drawingCanvas, CanvasShape boundsCanvas)
{
_drawingCanvas = drawingCanvas;
_boundsCanvas = boundsCanvas;
var moves = _drawingCanvas.Moves.Where(_ => _drawingCanvas.IsCaptured?.Invoke() == true);
var drags = Observable.Merge(_drawingCanvas.Downs, _drawingCanvas.Ups, moves);
_downs = _drawingCanvas.Downs.Where(_ => IsEnabled).Subscribe(p =>
{
if (_drawingCanvas.IsCaptured?.Invoke() == true)
{
_lineShape.Bounds.Hide();
_drawingCanvas.InvalidateShape?.Invoke();
_boundsCanvas.InvalidateShape?.Invoke();
_state = State.None;
_drawingCanvas.ReleaseCapture?.Invoke();
}
else
{
_lineShape = new LineShape();
_lineShape.Point1.X = p.X;
_lineShape.Point1.Y = p.Y;
_lineShape.Point2.X = p.X;
_lineShape.Point2.Y = p.Y;
_drawingCanvas.Children.Add(_lineShape);
_lineShape.Bounds = new LineBounds(_boundsCanvas, _lineShape);
_lineShape.Bounds.Update();
_lineShape.Bounds.Show();
_drawingCanvas.Capture?.Invoke();
_drawingCanvas.InvalidateShape?.Invoke();
_boundsCanvas.InvalidateShape?.Invoke();
_state = State.End;
}
});
_drags = drags.Where(_ => IsEnabled).Subscribe(p =>
{
if (_state == State.End)
{
_lineShape.Point2.X = p.X;
_lineShape.Point2.Y = p.Y;
_lineShape.Bounds.Update();
_drawingCanvas.InvalidateShape?.Invoke();
_boundsCanvas.InvalidateShape?.Invoke();
}
});
}