public void DragPoint(int index, System.Drawing.PointF newPosition)
{
if (index < 0 || index > 3)
{
throw new System.ArgumentOutOfRangeException("index");
}
UpdateInverseMatrix();
System.Drawing.PointF newBasePoint = newPosition;
VObjectsUtils.TransformPoint(_objInverseMatrix, ref newBasePoint);
System.Drawing.PointF scaleRefPoint = GetScaleRefPoint(index);
float dx = Math.Sign(_points[index].X - scaleRefPoint.X) * (newBasePoint.X - _points[index].X);
float dy = Math.Sign(_points[index].Y - scaleRefPoint.Y) * (newBasePoint.Y - _points[index].Y);
System.Drawing.RectangleF newBounds = VObjectsUtils.GetBoundingRectangle(newBasePoint, scaleRefPoint);
if (newBounds.Width < 1 || newBounds.Height < 1)
{
return;
}
if (_obj.TextArea.Height + dy < 0)
{
_flipY = !_flipY;
}
if (_obj.TextArea.Width + dx < 0)
{
_flipX = !_flipX;
}
_obj.TextArea = newBounds;
}
private void UpdateControlPoints()
{
if (_updateControlPoints)
{
UpdateBaseRectanglePoints();
System.Drawing.PointF[] interim = VObjectsUtils.TransformPoints(_obj.Transform, _points);
for (int i = 0; i < _transformedPoints.Count; i++)
{
_transformedPoints[i].Location = interim[i];
}
_updateControlPoints = false;
}
}
private void LayerRemovedHandler(object sender, LayerRemovedEventArgs e)
{
if (e.Layer == _currentLayer)
{
if (_layers.Count > 0)
{
int newIndex = e.Index - 1;
ChangeCurrentLayer(_layers[VObjectsUtils.FitToBounds(newIndex, 0, _layers.Count - 1)]);
}
else
{
ChangeCurrentLayer(null);
}
}
if (_hostViewer != null)
{
_hostViewer.InvalidateViewer();
}
}