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
31 #include "mapcommon.h"
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 scratchbox.
41 //setViewport(new QGLWidget);
42 #endif // !Q_WS_MAEMO_5
44 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
45 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
48 void MapView::setZoomLevel(int zoomLevel)
50 m_zoomTargetScale = pow(2, zoomLevel - MAX_MAP_ZOOM_LEVEL);
51 m_zoomScaleDelta = (m_zoomTargetScale - currentScale()) / (ZOOM_FPS * ZOOM_TIME);
53 startTimer(1000/ZOOM_FPS);
56 void MapView::timerEvent(QTimerEvent *event)
58 qreal scaleFactor = currentScale();
60 // qDebug() << __PRETTY_FUNCTION__
61 // << "abs(m_zoomTargetScale - scaleFactor)" << fabs(m_zoomTargetScale - scaleFactor)
62 // << "abs(m_zoomScaleDelta)" << fabs(m_zoomScaleDelta);
64 if (fabs(m_zoomTargetScale - scaleFactor) <= fabs(m_zoomScaleDelta)) {
65 scaleFactor = m_zoomTargetScale;
66 killTimer(event->timerId());
69 scaleFactor += m_zoomScaleDelta;
72 // qDebug() << __PRETTY_FUNCTION__ << "currentScale:" << currentScale()
73 // << "m_zoomScaleDelta" << m_zoomScaleDelta
74 // << "scaleFactor:" << scaleFactor;
77 transform.scale(scaleFactor, scaleFactor);
78 setTransform(transform);
81 qreal MapView::currentScale()
83 QTransform currentTransform = transform();
84 return currentTransform.m11();
87 void MapView::mouseMoveEvent(QMouseEvent *event)
89 m_scenePosition += m_mousePosition - mapToScene(event->pos()).toPoint();
91 emit viewScrolled(m_scenePosition);
92 //qDebug() << __PRETTY_FUNCTION__ << "m_scenePosition" << m_scenePosition;
94 m_mousePosition = mapToScene(event->pos()).toPoint();
97 void MapView::mousePressEvent(QMouseEvent *event)
99 m_mousePosition = mapToScene(event->pos()).toPoint();
100 m_scenePosition = mapToScene(width() / 2 - 1, height() / 2 - 1).toPoint();
104 void MapView::centerToSceneCoordinates(QPoint sceneCoordinate)
106 // qDebug() << __PRETTY_FUNCTION__ << "sceneCoordinate" << sceneCoordinate;
107 centerOn(sceneCoordinate);
110 void MapView::resizeEvent(QResizeEvent *event)
112 //qDebug() << "Resize event: " << event->size();
113 emit viewResized(event->size());