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Viewing changes to src/dg/samesizecmd.c

  • Committer: Bazaar Package Importer
  • Author(s): Otavio Salvador
  • Date: 2003-07-03 20:08:21 UTC
  • Revision ID: james.westby@ubuntu.com-20030703200821-se4xtqx25e5miczi
Tags: upstream-2.20
Import upstream version 2.20

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src/dg/samesizecmd.c
 
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////////////////////////////////////////////////////////////////////////////////
 
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//
 
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// This file is part of Toolkit for Conceptual Modeling (TCM).
 
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// (c) copyright 1995, Vrije Universiteit Amsterdam.
 
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// Author: Frank Dehne (frank@cs.vu.nl).
 
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//
 
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// TCM is free software; you can redistribute it and/or modify
 
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// it under the terms of the GNU General Public License as published by
 
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// the Free Software Foundation; either version 2 of the License, or
 
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// (at your option) any later version.
 
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//
 
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// TCM is distributed in the hope that it will be useful,
 
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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// GNU General Public License for more details.
 
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//
 
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// You should have received a copy of the GNU General Public License
 
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// along with TCM; if not, write to the Free Software
 
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 
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// 02111-1307, USA.
 
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////////////////////////////////////////////////////////////////////////////////
 
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#include "gshape.h"
 
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#include "shapeview.h"
 
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#include "diagram.h"
 
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#include "diagramviewer.h"
 
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#include "drawwindow.h"
 
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#include "messagedialog.h"
 
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#include "samesizecmd.h"
 
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SameSizeCmd::SameSizeCmd(ShapeView *v): 
 
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                Command(v->GetViewer()->GetDiagram(), v->GetViewer()) {
 
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        diagram = v->GetViewer()->GetDiagram();
 
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        shapes = new List<GShape *>(*v->GetSelection());
 
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        oldSizes = new List<Point *>;
 
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        for (shapes->first(); !shapes->done(); shapes->next()) {
 
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                Shape *shape = shapes->cur();
 
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                Point *pt = new Point(shape->GetWidth(), shape->GetHeight());
 
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                oldSizes->add(pt);
 
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        }
 
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}
 
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SameSizeCmd::~SameSizeCmd() {
 
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        delete shapes;
 
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        oldSizes->clear();
 
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        delete oldSizes;
 
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}
 
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void SameSizeCmd::Execute() {
 
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        if (!shapes->first())
 
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                return;
 
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        // the first shape determines the size.
 
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        GShape *shape = shapes->cur();
 
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        int w = shape->GetWidth();
 
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        int h = shape->GetHeight();
 
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        if ( ! shape->IsNodeShape() ) {
 
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                (new MessageDialog(GetMainWindow()->GetWidget(),
 
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                        MessageDialog::ERROR))->Show("Error", 
 
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                        "The first selected shape should not be a line");
 
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                GetMainWindow()->SetStatus("aborted: first selected is a line");
 
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                Abort();
 
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                return;
 
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        }
 
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        bool nodesFound = False;
 
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        while(shapes->next()) {
 
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                shape = shapes->cur();
 
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                if ( shape->IsNodeShape() ) {
 
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                        nodesFound = True;
 
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                        shape->UpdateSize(w, h);
 
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                        shape->GetView()->GetViewer()->
 
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                                ShapePositionUpdate(shape);
 
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                }
 
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        }
 
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        if ( ! nodesFound ) {
 
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                (new MessageDialog(GetMainWindow()->GetWidget(),
 
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                     MessageDialog::ERROR))->Show("Error", 
 
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                     "The selection should contain at least two node shapes");
 
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                GetMainWindow()->SetStatus(
 
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                        "aborted: too few nodes are selected");
 
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                Abort();
 
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                return;
 
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        }
 
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        Command::Execute();
 
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        GetMainWindow()->FitDocument();
 
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}
 
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void SameSizeCmd::UnExecute() {
 
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        // restore old positions.
 
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        if (shapes->first() && oldSizes->first()) {
 
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                do {
 
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                        GShape *shape = shapes->cur();
 
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                        Point *pt = oldSizes->cur();
 
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                        shape->UpdateSize(pt->x, pt->y);
 
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                        if ( shape->IsNodeShape() )
 
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                                shape->GetView()->GetViewer()->
 
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                                        ShapePositionUpdate(shape);
 
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                } while (shapes->next() && oldSizes->next());
 
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        }
 
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        Command::UnExecute();
 
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}