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Viewing changes to src/dg/addhandlecmd.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/addhandlecmd.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 1998, 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 "line.h"
 
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#include "addhandlecmd.h"
 
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#include "diagramviewer.h"
 
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#include "shapeview.h"
 
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AddHandleCmd::AddHandleCmd(Line *s, int x, int y, unsigned n): 
 
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                        DragHandleCmd(s, n) { 
 
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        GetOldPt()->x = x;
 
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        GetOldPt()->y = y;
 
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        addPosition = n;
 
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}
 
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void AddHandleCmd::Executable() {
 
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        Erase();
 
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        GetLine()->AddPoint(GetNewPt(), addPosition);
 
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        // reset Name Position
 
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        GetLine()->SetLineNumber(GetLine()->NrPoints()/2);
 
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        Redraw();
 
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        // line was straight?
 
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        if (GetLine()->NrPoints() == 3) {
 
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                List<GShape *> lines;
 
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                GetLine()->GetView()->CompleteShapes(&lines, 
 
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                        GetLine()->GetFromShape(), GetLine()->GetToShape());
 
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                for (lines.first(); !lines.done(); lines.next()) {
 
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                        Line *line2 = (Line *)lines.cur();
 
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                        if (line2->NrPoints() == 2) {
 
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                                GetLine()->GetView()->MultipleLines(line2);
 
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                                GetLine()->GetView()->MultipleLinesPosUpdate(line2);
 
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                                return;
 
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                        }
 
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                }
 
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        }
 
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        if (Toolkit::EditorWithInterEdgeConnections(GetMainWindow()->GetTool()))
 
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                GetLine()->GetView()->GetViewer()->ShapePositionUpdate(GetLine());
 
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}
 
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void AddHandleCmd::UnExecute() {
 
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        Command::UnExecute();
 
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        ReverseDelta();
 
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        Erase();
 
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        GetLine()->RemovePoint(addPosition);
 
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        Redraw();
 
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        if (GetLine()->NrPoints() == 2) {
 
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                GetLine()->GetView()->MultipleLines(GetLine());
 
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                GetLine()->GetView()->MultipleLinesPosUpdate(GetLine());
 
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        }
 
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        if (Toolkit::EditorWithInterEdgeConnections(GetMainWindow()->GetTool()))
 
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                GetLine()->GetView()->GetViewer()->ShapePositionUpdate(GetLine());
 
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}
 
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void AddHandleCmd::DrawOutLine(const Point *d) {
 
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        Point p1 = *GetOldPt() + ScaleCorrect(d);
 
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        GetView()->Snap(&p1);
 
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        // get left and rigth points.
 
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        Point p2 = *(*GetLine()->GetLine())[addPosition-1];
 
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        Point p3 = *(*GetLine()->GetLine())[addPosition];
 
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        DrawLines(&p1, &p2, &p3);
 
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}
 
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void AddHandleCmd::CalcPoints() {
 
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        Point pt = *GetOldPt();
 
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        pt = pt + *GetDelta();
 
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        if (pt.x <= 0)
 
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                pt.x = Shape::HANDLE_WIDTH/2;
 
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        if (pt.y <= 0)
 
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                pt.y = Shape::HANDLE_WIDTH/2;
 
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        GetView()->Snap(&pt);
 
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        GetNewPt()->x = pt.x;
 
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        GetNewPt()->y = pt.y;
 
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}
 
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