vcs.maemo.org Git - situare/blob - src/map/mapview.cpp

   1 /*
   2    Situare - A location system for Facebook
   3    Copyright (C) 2010  Ixonos Plc. Authors:
   4
   5        Sami Rämö - sami.ramo@ixonos.com
   6        Pekka Nissinen - pekka.nissinen@ixonos.com
   7
   8    Situare is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License
  10    version 2 as published by the Free Software Foundation.
  11
  12    Situare is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with Situare; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  20    USA.
  21 */
  22
  23 #include <cmath>
  24
  25 #include <QDebug>
  26 #include <QMouseEvent>
  27
  28 #include "mapcommon.h"
  29 #include "mapview.h"
  30
  31 MapView::MapView(QWidget *parent)
  32     : QGraphicsView(parent)
  33 {
  34     qDebug() << __PRETTY_FUNCTION__;
  35
  36     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  37     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  38
  39     m_zoomAnimation = new QPropertyAnimation(this, "viewScale", this);
  40     connect(m_zoomAnimation, SIGNAL(finished()),
  41         this, SIGNAL(viewZoomFinished()));
  42     connect(m_zoomAnimation, SIGNAL(finished()),
  43             this, SLOT(disableAnchor()));
  44
  45     setOptimizationFlag(QGraphicsView::DontAdjustForAntialiasing);
  46 }
  47
  48 void MapView::centerToSceneCoordinates(QPoint sceneCoordinate)
  49 {
  50     qDebug() << __PRETTY_FUNCTION__ << "sceneCoordinate" << sceneCoordinate;
  51
  52     centerOn(sceneCoordinate);
  53 }
  54
  55 void MapView::mouseDoubleClickEvent(QMouseEvent *event)
  56 {
  57     qWarning() << __PRETTY_FUNCTION__ << event->pos().x() << event->pos().y();
  58     qWarning() << __PRETTY_FUNCTION__ << mapToScene(event->pos()).toPoint().x() <<
  59             mapToScene(event->pos()).toPoint().y();
  60
  61     QPoint centerPosition = mapToScene(QPoint(width() / 2, height() / 2)).toPoint();
  62     QPoint pressPosition = mapToScene(event->pos()).toPoint();
  63     QPoint scenePosition = centerPosition - ((centerPosition - pressPosition) / 2);
  64
  65     setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
  66     emit zoomIn();
  67 //    emit viewScrolled(scenePosition);
  68 //    setTransformationAnchor(QGraphicsView::NoAnchor);
  69 }
  70
  71 void MapView::mouseMoveEvent(QMouseEvent *event)
  72 {
  73     m_scenePosition += m_mousePosition - mapToScene(event->pos()).toPoint();
  74
  75     qWarning() << __PRETTY_FUNCTION__;
  76
  77     qDebug() << __PRETTY_FUNCTION__ << "m_scenePosition:" << m_scenePosition;
  78
  79     emit viewScrolled(m_scenePosition);
  80
  81     m_mousePosition = mapToScene(event->pos()).toPoint();
  82 }
  83
  84 void MapView::mousePressEvent(QMouseEvent *event)
  85 {
  86     qWarning() << __PRETTY_FUNCTION__;
  87     qDebug() << __PRETTY_FUNCTION__;
  88
  89     QGraphicsView::mousePressEvent(event);
  90
  91     m_mousePosition = mapToScene(event->pos()).toPoint();
  92     m_scenePosition = mapToScene(width() / 2 - 1, height() / 2 - 1).toPoint();
  93 }
  94
  95 void MapView::mouseReleaseEvent(QMouseEvent *event)
  96 {
  97     qWarning() << __PRETTY_FUNCTION__;
  98
  99     QGraphicsView::mouseReleaseEvent(event);
 100 }
 101
 102 void MapView::resizeEvent(QResizeEvent *event)
 103 {
 104     qDebug() << __PRETTY_FUNCTION__ << "Resize:" << event->size();
 105
 106     emit viewResized(event->size());
 107 }
 108
 109 void MapView::setViewScale(qreal viewScale)
 110 {
 111     qDebug() << __PRETTY_FUNCTION__;
 112
 113     QTransform transform;
 114     transform.scale(viewScale, viewScale);
 115     setTransform(transform);
 116 }
 117
 118 void MapView::setZoomLevel(int zoomLevel)
 119 {
 120     qDebug() << __PRETTY_FUNCTION__;
 121
 122     if (m_zoomAnimation) {
 123         m_zoomAnimation->stop();
 124         m_zoomAnimation->setDuration(ZOOM_TIME);
 125         m_zoomAnimation->setStartValue(viewScale());
 126         m_zoomAnimation->setEndValue(pow(2, zoomLevel - MAX_MAP_ZOOM_LEVEL));
 127
 128         m_zoomAnimation->start();
 129     }
 130 }
 131
 132 qreal MapView::viewScale()
 133 {
 134     qDebug() << __PRETTY_FUNCTION__;
 135
 136     return transform().m11();
 137 }
 138
 139 void MapView::disableAnchor()
 140 {
 141     qWarning() << __PRETTY_FUNCTION__;
 142
 143     QCoreApplication::postEvent(this, new QMouseEvent(QEvent::MouseButtonRelease, QPoint(),
 144                                                       Qt::LeftButton, Qt::NoButton, Qt::NoModifier));
 145
 146 //    QGraphicsView::mouseReleaseEvent(new QMouseEvent(QEvent::MouseButtonRelease, QPoint(),
 147 //                                                     Qt::LeftButton, Qt::NoButton, Qt::NoModifier));
 148     setTransformationAnchor(QGraphicsView::AnchorViewCenter);
 149 }