public IEnumerable <FilterShape> DuplicateFilterInstancesToShapes(
IEnumerable <IOutputFilterModuleInstance> sourceInstances,
int numberOfCopies,
Point?startPosition = null,
double horizontalPositionProportion = 0.5
)
{
if (sourceInstances == null)
{
return(null);
}
Point pos;
if (startPosition == null)
{
pos = new Point();
int shapesWidth = diagramDisplay.Width - (2 * diagramDisplay.GetDiagramPosition().X);
pos.X = (int)(shapesWidth * horizontalPositionProportion);
pos.Y = diagramDisplay.GetDiagramOffset().Y + (diagramDisplay.Height / 4);
}
else
{
pos = (Point)startPosition;
}
List <FilterShape> result = new List <FilterShape>();
for (int i = 0; i < numberOfCopies; i++)
{
foreach (IOutputFilterModuleInstance instance in sourceInstances)
{
FilterShape newShape = _CreateNewFilterInstanceAndShape(instance.TypeId, false, instance.ModuleData);
newShape.ModuleDataUpdated();
newShape.X = pos.X;
newShape.Y = pos.Y;
pos.Y += newShape.Height + SHAPE_VERTICAL_SPACING;
// save the new shape position in the application data references
FilterSetupFormShapePosition position = new FilterSetupFormShapePosition();
position.xPositionProportion = (double)newShape.X / _previousDiagramWidth;
position.yPosition = newShape.Y;
_applicationData.FilterSetupFormShapePositions[newShape.FilterInstance.InstanceId] = position;
result.Add(newShape);
}
}
//assume we made changes since we added shapes
_changesMade = true;
return(result);
}
