File indexing completed on 2024-05-12 05:44:25

 /***************************************************************************
  *   Copyright (C) 2006-2009 by Rajko Albrecht                             *
  *   ral@alwins-world.de                                                   *
  *                                                                         *
  *   This program 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.,                                       *
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  ***************************************************************************/
 #include "pannerview.h"
 #include "graphtree_defines.h"
 
 #include <QGraphicsRectItem>
 #include <QMouseEvent>
 #include <QPainter>
 #include <QStyleOptionGraphicsItem>
 
 class GraphPanMark : public QGraphicsRectItem
 {
 public:
     GraphPanMark(QGraphicsItem *p = nullptr);
     ~GraphPanMark() override;
     int type() const override;
     void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *) override;
 };
 
 GraphPanMark::GraphPanMark(QGraphicsItem *p)
     : QGraphicsRectItem(p)
 {
     setZValue(1.9);
     setPen(QPen(Qt::red));
     QPen pe = pen();
     pe.setWidthF(0.0);
     pe.setStyle(Qt::DashDotLine);
     setPen(pe);
 }
 
 GraphPanMark::~GraphPanMark()
 {
 }
 
 void GraphPanMark::paint(QPainter *p, const QStyleOptionGraphicsItem *option, QWidget *w)
 {
     if (option->levelOfDetail < .5) {
         QGraphicsRectItem::paint(p, option, w);
     }
 }
 
 int GraphPanMark::type() const
 {
     return GRAPHTREE_PANMARK;
 }
 
 PannerView::PannerView(QWidget *parent)
     : QGraphicsView(parent) // KDE4 check , /*Qt::WNoAutoErase |*/ Qt::WA_StaticContents/*WStaticContents*/ )
 {
     m_Mark = nullptr;
     m_Moving = false;
     viewport()->setFocusPolicy(Qt::NoFocus);
     setFocusPolicy(Qt::NoFocus);
 }
 
 PannerView::~PannerView()
 {
     if (scene() && m_Mark) {
         scene()->removeItem(m_Mark);
         delete m_Mark;
     }
 }
 
 void PannerView::setScene(QGraphicsScene *sc)
 {
     if (!sc) {
         if (scene()) {
             scene()->removeItem(m_Mark);
         }
     } else {
         if (!m_Mark) {
             m_Mark = new GraphPanMark;
         }
         sc->addItem(m_Mark);
     }
     QGraphicsView::setScene(sc);
 }
 
 void PannerView::setZoomRect(const QRectF &theValue)
 {
     m_ZoomRect = theValue;
     if (m_Mark) {
         m_Mark->setRect(m_ZoomRect);
     }
 }
 
 /*!
     \fn PannerView::contentsMouseMoveEvent(QMouseEvent* e)
  */
 void PannerView::mouseMoveEvent(QMouseEvent *e)
 {
     if (m_Moving) {
         QPointF sPos = mapToScene(e->pos());
         emit zoomRectMoved(sPos.x() - m_ZoomRect.center().x(), sPos.y() - m_ZoomRect.center().y());
 
         m_LastPos = e->pos();
     }
 }
 
 /*!
     \fn PannerView::contentsMousePressEvent(QMouseEvent* e)
  */
 void PannerView::mousePressEvent(QMouseEvent *e)
 {
     if (m_ZoomRect.isValid()) {
         QPointF sPos = mapToScene(e->pos());
         if (!m_ZoomRect.contains(sPos)) {
             emit zoomRectMoved(sPos.x() - m_ZoomRect.center().x(), sPos.y() - m_ZoomRect.center().y());
         }
         m_Moving = true;
         m_LastPos = e->pos();
     }
 }
 
 /*!
     \fn PannerView::contentsMouseReleaseEvent(QMouseEvent*)
  */
 void PannerView::mouseReleaseEvent(QMouseEvent *)
 {
     m_Moving = false;
     emit zoomRectMoveFinished();
 }
 
 /*!
     \fn PannerView::updateCurrentRect()
  */
 void PannerView::updateCurrentRect()
 {
     if (m_ZoomRect.isValid()) { }
 }
 
 #include "moc_pannerview.cpp"