2 Situare - A location system for Facebook
3 Copyright (C) 2010 Ixonos Plc. Authors:
5 Sami Rämö - sami.ramo@ixonos.com
7 Situare is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License
9 version 2 as published by the Free Software Foundation.
11 Situare is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Situare; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
25 #include <QMouseEvent>
29 #endif // Q_WS_MAEMO_5
34 MapView::MapView(QWidget *parent) : QGraphicsView(parent)
37 // use opengl for desktop to gain some performance in map view
38 // opengl can't be used in scrathbox
39 setViewport(new QGLWidget);
40 #endif // Q_WS_MAEMO_5
42 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
43 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
46 void MapView::setZoomLevel(int zoomLevel)
48 m_zoomTargetScale = pow(2, zoomLevel - MAX_ZOOM_LEVEL);
49 m_zoomScaleDelta = (m_zoomTargetScale - currentScale()) / (ZOOM_FPS * ZOOM_TIME);
51 startTimer(1000/ZOOM_FPS);
54 void MapView::timerEvent(QTimerEvent *event)
56 qreal scaleFactor = currentScale();
58 // qDebug() << __PRETTY_FUNCTION__
59 // << "abs(m_zoomTargetScale - scaleFactor)" << fabs(m_zoomTargetScale - scaleFactor)
60 // << "abs(m_zoomScaleDelta)" << fabs(m_zoomScaleDelta);
62 if (fabs(m_zoomTargetScale - scaleFactor) <= fabs(m_zoomScaleDelta)) {
63 scaleFactor = m_zoomTargetScale;
64 killTimer(event->timerId());
67 scaleFactor += m_zoomScaleDelta;
70 // qDebug() << __PRETTY_FUNCTION__ << "currentScale:" << currentScale()
71 // << "m_zoomScaleDelta" << m_zoomScaleDelta
72 // << "scaleFactor:" << scaleFactor;
75 transform.scale(scaleFactor, scaleFactor);
76 setTransform(transform);
79 qreal MapView::currentScale()
81 QTransform currentTransform = transform();
82 return currentTransform.m11();
85 void MapView::mouseMoveEvent(QMouseEvent *event)
87 m_scenePosition += m_mousePosition - mapToScene(event->pos());
89 emit viewScrolled(m_scenePosition);
90 //qDebug() << __PRETTY_FUNCTION__ << "m_scenePosition" << m_scenePosition;
92 m_mousePosition = mapToScene(event->pos());
95 void MapView::mousePressEvent(QMouseEvent *event)
97 m_mousePosition = mapToScene(event->pos());
98 m_scenePosition = mapToScene(width() / 2 - 1, height() / 2 - 1);
102 void MapView::centerToSceneCoordinates(QPointF sceneCoordinate)
104 //qDebug() << __PRETTY_FUNCTION__ << "sceneCoordinate" << sceneCoordinate;
105 centerOn(sceneCoordinate);
108 void MapView::resizeEvent(QResizeEvent *event)
110 qDebug() << "Resize event: " << event->size();
111 emit viewResized(event->size());