public override bool Start(IMouseInformation mouseInformation)
{
base.Start(mouseInformation);
if (_graphicBuilder != null)
return _graphicBuilder.Start(mouseInformation);
if (!CanStart(mouseInformation.Tile.PresentationImage))
return false;
RoiGraphic roiGraphic = CreateRoiGraphic();
_graphicBuilder = CreateGraphicBuilder(roiGraphic.Subject);
_graphicBuilder.GraphicComplete += OnGraphicBuilderComplete;
_graphicBuilder.GraphicCancelled += OnGraphicBuilderCancelled;
AddRoiGraphic( mouseInformation.Tile.PresentationImage,
roiGraphic,
(IOverlayGraphicsProvider)mouseInformation.Tile.PresentationImage);
roiGraphic.Suspend();
try
{
if (_graphicBuilder.Start(mouseInformation))
return true;
}
finally
{
roiGraphic.Resume(true);
}
this.Cancel();
return false;
}
private void OnGraphicCancelled(object sender, GraphicEventArgs e)
{
_graphicBuilder.GraphicCancelled -= OnGraphicCancelled;
_graphicBuilder.GraphicComplete -= OnGraphicComplete;
_graphicBuilder = null;
}
private void AddDrawShutterGraphic(IDicomPresentationImage image)
{
switch (_selectedShutterType)
{
case ShutterType.Polygon:
{
_primitiveGraphic = new PolylineGraphic();
image.OverlayGraphics.Add(_primitiveGraphic);
_graphicBuilder = InteractiveShutterGraphicBuilders.CreatePolygonalShutterBuilder((PolylineGraphic)_primitiveGraphic);
break;
}
case ShutterType.Circle:
{
_primitiveGraphic = new EllipsePrimitive();
image.OverlayGraphics.Add(_primitiveGraphic);
_graphicBuilder = InteractiveShutterGraphicBuilders.CreateCircularShutterBuilder((EllipsePrimitive)_primitiveGraphic);
break;
}
default:
{
_primitiveGraphic = new RectanglePrimitive();
image.OverlayGraphics.Add(_primitiveGraphic);
_graphicBuilder = InteractiveShutterGraphicBuilders.CreateRectangularShutterBuilder((RectanglePrimitive)_primitiveGraphic);
break;
}
}
_graphicBuilder.GraphicCancelled += OnGraphicCancelled;
_graphicBuilder.GraphicComplete += OnGraphicComplete;
}
public override void Cancel()
{
if (_graphicBuilder != null)
{
_graphicBuilder.Cancel();
_graphicBuilder = null;
}
if (_primitiveGraphic != null)
{
IPresentationImage image = _primitiveGraphic.ParentPresentationImage;
RemoveDrawShutterGraphic();
image.Draw();
}
}
private void OnGraphicComplete(object sender, GraphicEventArgs e)
{
_graphicBuilder.GraphicCancelled -= OnGraphicCancelled;
_graphicBuilder.GraphicComplete -= OnGraphicComplete;
_graphicBuilder = null;
if (_primitiveGraphic != null)
{
bool boundingBoxTooSmall = false;
_primitiveGraphic.CoordinateSystem = CoordinateSystem.Destination;
if (_primitiveGraphic.BoundingBox.Width < 50 || _primitiveGraphic.BoundingBox.Height < 50)
boundingBoxTooSmall = true;
_primitiveGraphic.ResetCoordinateSystem();
if (boundingBoxTooSmall)
{
RemoveDrawShutterGraphic();
base.SelectedPresentationImage.Draw();
}
else
{
GeometricShutter shutter = ConvertToGeometricShutter();
GeometricShuttersGraphic shuttersGraphic =
GetGeometricShuttersGraphic((IDicomPresentationImage) base.SelectedPresentationImage, true);
DrawableUndoableCommand command = new DrawableUndoableCommand(shuttersGraphic);
command.Name = SR.CommandDrawShutter;
command.Enqueue(new AddGeometricShutterUndoableCommand(shuttersGraphic, shutter));
command.Execute();
base.ImageViewer.CommandHistory.AddCommand(command);
}
}
}
public override bool Stop(IMouseInformation mouseInformation)
{
if (_graphicBuilder == null)
return false;
if (_graphicBuilder.Stop(mouseInformation))
return true;
_graphicBuilder = null;
_undoableCommand = null;
return false;
}
private void OnGraphicBuilderCancelled(object sender, GraphicEventArgs e)
{
_graphicBuilder.GraphicComplete -= OnGraphicBuilderComplete;
_graphicBuilder.GraphicCancelled -= OnGraphicBuilderCancelled;
_undoableCommand.Unexecute();
_undoableCommand = null;
_graphicBuilder = null;
}
private void OnGraphicBuilderComplete(object sender, GraphicEventArgs e)
{
_graphicBuilder.GraphicComplete -= OnGraphicBuilderComplete;
_graphicBuilder.GraphicCancelled -= OnGraphicBuilderCancelled;
_graphicBuilder.Graphic.ImageViewer.CommandHistory.AddCommand(_undoableCommand);
_graphicBuilder.Graphic.Draw();
_undoableCommand = null;
_graphicBuilder = null;
}
