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////////////////////////////////////////////////////////////////////////////////

//

// This file is part of Toolkit for Conceptual Modeling (TCM).

// (c) copyright 1995, Vrije Universiteit Amsterdam.

// Author: Frank Dehne (frank@cs.vu.nl).

//

// TCM is free software; you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 2 of the License, or

// (at your option) any later version.

//

// TCM is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with TCM; if not, write to the Free Software

// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA

// 02111-1307, USA.

////////////////////////////////////////////////////////////////////////////////

#include "stwindow.h"

#include "diagram.h"

#include "stviewer.h"

#include "selectareacmd.h"

#include "sizeshapecmd.h"

#include "draghandlecmd.h"

#include "dragshapescmd.h"

#include "dragstlabelcmd.h"

#include "draghlinecmd.h"

#include "transitionarrow.h"

#include "nodeshape.h"

 

STViewer::STViewer(Config *c, STWindow *d): DiagramViewer(c, d) { }

 

TransitionArrow *STViewer::HitHLine(int x, int y) {

        List<GShape *> *shapes = GetCurView()->GetShapes();

        for (shapes->first(); !shapes->done(); shapes->next()) {

                GShape *shape = shapes->cur();

                if (shape->GetClassType()==Code::TRANSITION_ARROW && 

                    shape->IsVisible()) {

                        TransitionArrow *h = (TransitionArrow *)shape;

                        if (h->HitHLine(x, y))

                                return h;

                }

        }

        return 0;

}

 

Command *STViewer::Drag(int x, int y) {

        double x1 = GetScaler()->ScaleCorrect(x);

        double y1 = GetScaler()->ScaleCorrect(y);

        Line *line;

        int w;

        if ((line = GetCurView()->HitLineHandle(static_cast<int>(0.5 + x1), 

                                                                                        static_cast<int>(0.5 + y1), w)))

                return new DragHandleCmd(line, w);

        TextShape *textShape;

        if ((textShape = GetCurView()->HitTextShape(static_cast<int>(0.5 + x1),

                                                                                                static_cast<int>(0.5 + y1))))

                return new DragSTLabelCmd(textShape);

        // look for horizontal transition line to drag.

        GShape *shape;

        if ((shape = HitHLine(static_cast<int>(0.5 + x1), 

                                                  static_cast<int>(0.5 + y1))))

                return new DragHLineCmd((TransitionArrow *)shape);

        return DiagramViewer::Drag(x, y);

        //

        // look for nodes shapes.

        // else if ((shape = curView->HitNodeShape(x, y))) {

        //        if (shape->IsSelected() && (w = shape->HitHandles(x, y)) >= 0)

        //               return new SizeShapeCenterCmd(shape, w);

        //      else if (shape->IsSelected() && curView->NrSelected() > 1)

        //             return new DragShapesCmd(curView);

        //    else

        //           return new DragShapeCmd(shape);

        //}

        // else

        //      return new SelectAreaCmd(GetCurView());

}