File indexing completed on 2024-04-28 05:38:12

 /***************************************************************************
  *   Copyright (C) 2015 by Renaud Guezennec                                *
  *   https://rolisteam.org/contact                   *
  *                                                                         *
  *   rolisteam 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.                                   *
  *                                                                         *
  *   This program 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 this program; if not, write to the                         *
  *   Free Software Foundation, Inc.,                                       *
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
 #include "ruleitem.h"
 
 #include "controller/view_controller/vectorialmapcontroller.h"
 #include <QPainter>
 #include <cmath>
 
 #define FONT_SIZE 15
 
 QString unitToText(Core::ScaleUnit unit)
 {
     QString result;
     switch(unit)
     {
     case Core::M:
         result= QStringLiteral("m");
         break;
     case Core::CM:
         result= QStringLiteral("cm");
         break;
     case Core::INCH:
         result= QStringLiteral("″");
         break;
     case Core::FEET:
         result= QStringLiteral("′");
         break;
     case Core::YARD:
         result= QStringLiteral("yd");
         break;
     case Core::MILE:
         result= QStringLiteral("mi");
         break;
     case Core::KM:
         result= QStringLiteral("km");
         break;
     case Core::PX:
         result= QStringLiteral("px");
         break;
     }
     return result;
 }
 
 RuleItem::RuleItem(VectorialMapController* ctrl) : QGraphicsObject(), m_ctrl(ctrl) {}
 
 RuleItem::~RuleItem() {}
 QRectF RuleItem::boundingRect() const
 {
     return QRectF(m_startPoint, m_endPoint);
 }
 
 void RuleItem::setNewEnd(const QPointF& nendConst, bool onAxis)
 {
     if(nendConst.isNull())
         return;
     if(!onAxis)
     {
         m_endPoint+= nendConst;
         return;
     }
 
     QLineF line(m_startPoint, nendConst);
     if(std::fabs(line.dx()) > std::fabs(line.dy()))
     {
         m_endPoint= QPointF(m_endPoint.x() + nendConst.x(), 0);
     }
     else
     {
         m_endPoint= QPointF(0, m_endPoint.y() + nendConst.y());
     }
 }
 void RuleItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 {
     Q_UNUSED(option)
     Q_UNUSED(widget)
 
     painter->save();
     painter->setRenderHint(QPainter::Antialiasing, true);
 
     m_pen.setWidth(m_ctrl->penSize() * 1 / m_ctrl->zoomLevel());
     m_pen.setColor(Qt::red);
     painter->setPen(m_pen);
     QLineF line(m_startPoint, m_endPoint);
 
     painter->drawLine(line);
     painter->restore();
 
     qreal len= line.length();
 
     qreal unitCount= len / m_ctrl->gridSize() * m_ctrl->gridScale();
 
     QFont f= painter->font();
     f.setPixelSize(FONT_SIZE * 1 / m_ctrl->zoomLevel());
     painter->setFont(f);
 
     auto text= QString("%1 %2").arg(QString::number(unitCount, 'f', 2), unitToText(m_ctrl->scaleUnit()));
 
     QFontMetricsF metrics(f);
     auto rect= metrics.boundingRect(text);
     painter->save();
     painter->fillRect(rect.translated(m_endPoint), QBrush("#88FFFFFF"));
     painter->restore();
     painter->drawText(m_endPoint, text);
 }