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Viewing changes to src/dg/sizeshapecmd.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/sizeshapecmd.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 "grafport.h"
 
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#include "nodeshape.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 "sizeshapecmd.h"
 
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// dir = handle nr + 1
 
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SizeShapeCmd::SizeShapeCmd(GShape *s, int dir)
 
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        :Command(s->GetView()->GetViewer()->GetDiagram(), 
 
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                s->GetView()->GetViewer()),
 
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        fixpoint(*s->GetPosition()),
 
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        centre(1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0),
 
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        corner(1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0)
 
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{
 
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        if ( ! (shape = dynamic_cast<NodeShape *>(s)) )
 
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                error("Illegal use of size shape command");
 
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        constrainX = False;
 
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        constrainY = False;
 
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        switch ( dir ) {
 
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        case 5:
 
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        case 6:
 
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                constrainX = True; // only change height
 
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                break;
 
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        case 7:
 
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        case 8:
 
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                constrainY = True; // only change width
 
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                break;
 
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        }
 
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        direction = dir;
 
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        newCentre = oldCentre = *shape->GetPosition();
 
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        newWidth = oldWidth = shape->GetWidth();
 
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        newHeight = oldHeight = shape->GetHeight();
 
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}
 
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void SizeShapeCmd::TrackMouse(TrackType aPhase, Point * /* anchorPoint */,
 
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        Point * /* previousPoint */, Point *nextPoint)
 
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{
 
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        switch(aPhase) {
 
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                case TRACK_PRESS:
 
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                        GetMainWindow()->SetSizeCursor(direction);
 
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                        CalcSize(nextPoint);
 
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                        Draw();
 
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                        break;
 
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                case TRACK_DRAG:
 
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                        Undraw();
 
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                        CalcSize(nextPoint);
 
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                        Draw();
 
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                        break;
 
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                case TRACK_RELEASE:
 
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                        Undraw();
 
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                        GetMainWindow()->SetCursor(MouseCursor::LEFT_PTR);
 
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                        break;
 
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                default:
 
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                        error("unknown track type\n");
 
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                        break;
 
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        }
 
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}
 
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void SizeShapeCmd::CalcSize(const Point *p) {
 
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        double tw, th;
 
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        newWidth = shape->GetWidth();
 
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        newHeight = shape->GetHeight();
 
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        tw = shape->GetName()->GetStringWidth();
 
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        th = shape->GetName()->GetStringHeight();
 
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        const DPoint c(ScaleCorrect(p->x), ScaleCorrect(p->y));
 
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        corner.CalcScale(&c, fixpoint.x, fixpoint.y, &newWidth, &newHeight,
 
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                tw, th, constrainX, constrainY);
 
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        centre.CalcPoint(&newCentre, fixpoint.x, fixpoint.y,
 
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                newWidth, newHeight, tw, th);
 
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        shape->CorrectScale(&newWidth, &newHeight, constrainX, constrainY);
 
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}
 
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void SizeShapeCmd::Draw() {
 
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        shape->DrawOutLine(newCentre.x, newCentre.y, newWidth, newHeight);
 
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}
 
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void SizeShapeCmd::Execute() {
 
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        Command::Execute();
 
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        Point pt(newCentre);
 
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        shape->UpdatePosition(&pt);
 
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        shape->UpdateSize(int(0.5 + newWidth), int(0.5 + newHeight));
 
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        shape->GetView()->GetViewer()->ShapePositionUpdate(shape);
 
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        GetMainWindow()->FitDocument();
 
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}
 
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void SizeShapeCmd::UnExecute() {
 
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        Command::UnExecute();
 
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        Point pt(oldCentre);
 
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        shape->UpdatePosition(&pt);
 
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        shape->UpdateSize(int(0.5 + oldWidth), int(0.5 + oldHeight));
 
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        shape->GetView()->GetViewer()->ShapePositionUpdate(shape);      
 
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}