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

 /***************************************************************************
  *      Copyright (C) 2010 by Renaud Guezennec                             *
  *                                                                         *
  *                                                                         *
  *   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 "pathitem.h"
 #include <QDebug>
 #include <QMenu>
 #include <QPainter>
 #include <QPainterPath>
 #include <QStyleOptionGraphicsItem>
 
 #include "controller/item_controllers/pathcontroller.h"
 #include "controller/item_controllers/visualitemcontroller.h"
 #include "controller/view_controller/vectorialmapcontroller.h"
 
 QPainterPath vectorToFullPath(const std::vector<QPointF>& points, qreal penWidth= 10., bool closeUp= false)
 {
     QPainterPath path;
     if(points.size() == 1)
         return path;
 
     bool first= true;
     std::vector<QPointF> topPoints;
     std::vector<QPointF> bottomPoints;
 
     int i= 0;
     for(auto current : points)
     {
         // QPointF current= points[i];
         QPointF lastPoint;
         QPointF nextPoint;
         if(points.size() > i + 1)
             nextPoint= points[i + 1];
         if(i > 0)
             lastPoint= points[i - 1];
 
         QLineF line(current, lastPoint);
         QLineF line2(current, nextPoint);
 
         if(nextPoint.isNull())
         {
             auto normal1= line.normalVector();
             normal1.setLength(-normal1.length());
             topPoints.push_back(normal1.pointAt(penWidth / (normal1.length() * 2)));
             bottomPoints.push_back(normal1.pointAt(-penWidth / (normal1.length() * 2)));
         }
         else if(lastPoint.isNull())
         {
             auto normal2= line2.normalVector();
 
             topPoints.push_back(normal2.pointAt(penWidth / (normal2.length() * 2)));
             bottomPoints.push_back(normal2.pointAt(-penWidth / (normal2.length() * 2)));
         }
         else
         {
             auto normal1= line.normalVector();
             normal1.setLength(-normal1.length());
             auto normal2= line2.normalVector();
 
             topPoints.push_back((normal1.pointAt(penWidth / (normal1.length() * 2))
                                  + normal2.pointAt(penWidth / (normal2.length() * 2)))
                                 / 2);
             bottomPoints.push_back((normal1.pointAt(-penWidth / (normal1.length() * 2))
                                     + normal2.pointAt(-penWidth / (normal2.length() * 2)))
                                    / 2);
         }
     }
 
     for(auto i= bottomPoints.rbegin(); i != bottomPoints.rend(); ++i)
     {
         topPoints.push_back(*i);
     }
 
     if(closeUp)
         topPoints.push_back(topPoints.at(0));
 
     for(const auto& point : topPoints)
     {
         if(first)
         {
             path.moveTo(point);
             first= false;
         }
         else
             path.lineTo(point);
     }
 
     return path;
 }
 
 PathItem::PathItem(vmap::PathController* ctrl) : VisualItem(ctrl), m_pathCtrl(ctrl)
 {
     if(!m_pathCtrl)
         return;
 
     connect(m_pathCtrl, &vmap::PathController::positionChanged, this,
             [this](int corner, QPointF pos)
             {
                 if(m_children.empty())
                     return;
 
                 if(corner == qBound(0, corner, m_children.size() - 1))
                     m_children[corner]->setPos(pos);
                 update();
             });
     connect(m_pathCtrl, &vmap::PathController::pointAdded, this, &PathItem::addChild);
 
     int i= 0;
     if(!m_pathCtrl->penLine())
     {
         for(auto point : m_pathCtrl->points())
             addChild(point, i);
     }
 
     m_closeAct= new QAction(tr("Close Path"), this);
     m_closeAct->setCheckable(true);
     connect(m_closeAct, &QAction::triggered, m_pathCtrl, &vmap::PathController::setClosed);
 
     m_fillAct= new QAction(tr("Fill Path"), this);
     m_fillAct->setCheckable(true);
     connect(m_fillAct, &QAction::triggered, m_pathCtrl, &vmap::PathController::setFilled);
 
     update();
 }
 
 QRectF PathItem::boundingRect() const
 {
     if(!m_pathCtrl)
         return {};
     return m_pathCtrl->rect();
 }
 
 QPainterPath PathItem::shape() const
 {
     if(!m_pathCtrl)
         return {};
     return vectorToFullPath(m_pathCtrl->points(), 10);
 }
 
 void PathItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 {
     if(!m_pathCtrl)
         return;
     Q_UNUSED(option)
     Q_UNUSED(widget)
 
     setChildrenVisible(hasFocusOrChild());
 
     QPainterPath path= m_pathCtrl->path(); // vectorToPath(m_pathCtrl->points(), m_pathCtrl->closed());
 
     painter->save();
     auto pen= painter->pen();
     pen.setColor(m_pathCtrl->color());
     pen.setWidth(m_pathCtrl->penWidth());
     pen.setCapStyle(Qt::RoundCap);
     pen.setJoinStyle(Qt::RoundJoin);
     painter->setPen(pen);
     if(m_pathCtrl->filled())
     {
         path.setFillRule(Qt::OddEvenFill);
         painter->setBrush(pen.brush());
     }
     painter->setPen(pen);
     painter->drawPath(path);
     painter->restore();
 
     if(canBeMoved() && (option->state & QStyle::State_MouseOver || isSelected()))
     {
         painter->save();
         QPen pen= painter->pen();
         pen.setColor(isSelected() ? m_selectedColor : m_highlightColor);
         pen.setWidth(m_highlightWidth);
         painter->setPen(pen);
         QTransform scale= QTransform().scale(1.01, 1.01);
         painter->drawPath(scale.map(path));
         painter->restore();
     }
 }
 
 void PathItem::setNewEnd(const QPointF& p)
 {
     if(!m_pathCtrl)
         return;
 
     if(m_pathCtrl->penLine())
     {
         auto p0= m_pathCtrl->pointAt(m_pathCtrl->pointCount() - 1);
         m_pathCtrl->addPoint(p0 + p);
     }
     else
         m_pathCtrl->setCorner(p, m_pathCtrl->pointCount() - 1);
 }
 
 /*void PathItem::createActions()
 {
 
 }*/
 
 void PathItem::addActionContextMenu(QMenu& menu)
 {
     if(!m_pathCtrl)
         return;
     menu.addAction(m_closeAct);
     menu.addAction(m_fillAct);
     VisualItem::addActionContextMenu(menu);
 }
 void PathItem::addPoint(const QPointF& point)
 {
     if(!m_pathCtrl)
         return;
     m_pathCtrl->addPoint(point);
 }
 
 void PathItem::addChild(const QPointF& point, int i)
 {
     if(!m_pathCtrl)
         return;
     if(m_pathCtrl->penLine())
         return;
 
     ChildPointItem* tmp= new ChildPointItem(m_ctrl, i, this);
     tmp->setMotion(ChildPointItem::MOUSE);
     m_children.push_back(tmp);
     tmp->setPos(point);
     tmp->setPlacement(ChildPointItem::Center);
 }