qi-hardware/nanomap
1
0
Fork 0
mirror of git://projects.qi-hardware.com/nanomap.git synced 2024-12-18 06:29:23 +02:00
Code

load tracks from .gpx files and show them in the map

Browse Source
This commit is contained in:
Niels 2010-06-15 14:31:25 +02:00
parent a76267346b
commit 95c361f90b
2 changed files with 155 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

178
mapwidget.cpp
View File

@ -21,6 +21,7 @@
#include <cmath>
#include <QtCore/QDateTime>
#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QFile>
@ -35,6 +36,7 @@
#include <QtGui/QPaintEvent>
#include <QtNetwork/QNetworkReply>
#include <QtNetwork/QNetworkRequest>
#include <QtXml/QXmlStreamReader>
MapWidget::MapWidget(QWidget *parent)
: QWidget(parent),
@ -69,15 +71,22 @@ MapWidget::MapWidget(QWidget *parent)
m_copyright(),
m_markerPos(),
m_markerName(),
m_drawMarker(true)
m_drawMarker(true),
m_track(),
m_trackOnScreen(),
m_trackOffset()
{
for (int x = 0; x < 100; ++x) {
for (int y = 0; y < 100; ++y) {
m_pix[x][y] = 0;
}
}
QString fileName;
if (QApplication::arguments().count() > 1) {
loadMapFile(QApplication::arguments().at(1));
fileName = QApplication::arguments().at(1);
}
if (fileName.endsWith(".map")) {
loadMapFile(fileName);
m_zoomable = m_zoomLevel.count() > 1 &&
m_zoomLevel.count() == m_minIndexXList.count() &&
@ -88,18 +97,6 @@ MapWidget::MapWidget(QWidget *parent)
m_indexX = (m_minIndexX + m_maxIndexX) / 2;
m_indexY = (m_minIndexY + m_maxIndexY) / 2;
if (QApplication::arguments().count() > 3) {
bool ok;
int x = QApplication::arguments().at(2).toInt(&ok);
if (ok) {
m_indexX = x;
}
int y = QApplication::arguments().at(3).toInt(&ok);
if (ok) {
m_indexY = y;
}
}
m_cols = ceil(320.0 / (qreal) m_pixWidth) + 1;
m_rows = ceil(240.0 / (qreal) m_pixHeight) + 1;
@ -114,9 +111,12 @@ MapWidget::MapWidget(QWidget *parent)
for (int i = 0; i < 19; ++i) {
m_zoomLevel << QString::number(i);
m_minIndexXList << 0;
m_maxIndexXList << pow(2, i) - 1;
m_maxIndexXList << (1 << i) - 1;
m_minIndexYList << 0;
m_maxIndexYList << pow(2, i) - 1;
m_maxIndexYList << (1 << i) - 1;
}
if (fileName.endsWith(".gpx")) {
loadGpx(fileName);
}
m_baseName = QDir::homePath()+"/Maps/OSM/%z/%x/%y.png";
QTimer::singleShot(100, this, SLOT(loadConfig()));
@ -134,8 +134,10 @@ MapWidget::MapWidget(QWidget *parent)
MapWidget::~MapWidget()
{
if (m_networkMode) {
saveConfig();
}
}
void MapWidget::removeMarker(int index)
{
@ -188,6 +190,7 @@ void MapWidget::resizeEvent(QResizeEvent *event)
void MapWidget::mouseMoveEvent(QMouseEvent *event)
{
if (m_isMoving) {
m_trackOffset += (event->pos() - m_startPos) - m_pos;
m_pos = event->pos() - m_startPos;
updatePos();
}
@ -197,11 +200,13 @@ void MapWidget::mousePressEvent(QMouseEvent *event)
{
if (QRect(9, 14, 13, 13).contains(event->pos())) {
changeZoomLevel(1);
updateTrack();
reloadPixmaps();
updatePos();
m_isMoving = false;
} else if (QRect(9, 214, 13, 13).contains(event->pos())) {
changeZoomLevel(-1);
updateTrack();
reloadPixmaps();
updatePos();
m_isMoving = false;
@ -222,9 +227,11 @@ void MapWidget::wheelEvent(QWheelEvent *event)
{
if (event->delta() < 0) {
changeZoomLevel(-1);
updateTrack();
reloadPixmaps();
} else {
changeZoomLevel(1);
updateTrack();
reloadPixmaps();
}
updatePos();
@ -232,6 +239,7 @@ void MapWidget::wheelEvent(QWheelEvent *event)
void MapWidget::keyPressEvent(QKeyEvent *event)
{
QPoint move;
int width = 10;
if (event->modifiers() & Qt::AltModifier) {
width = 100;
@ -252,30 +260,28 @@ void MapWidget::keyPressEvent(QKeyEvent *event)
n = m_markerName.last().toInt();
}
QString newName = QString::number(n+1);
m_markerPos << geoPos();
m_markerName << newName;
emit markerAdded(newName);
addMarker(geoPos(), newName);
}
break;
}
case Qt::Key_Up:
{
m_pos += QPoint(0, width);
move = QPoint(0, width);
break;
}
case Qt::Key_Down:
{
m_pos += QPoint(0, -width);
move = QPoint(0, -width);
break;
}
case Qt::Key_Left:
{
m_pos += QPoint(width, 0);
move = QPoint(width, 0);
break;
}
case Qt::Key_Right:
{
m_pos += QPoint(-width, 0);
move = QPoint(-width, 0);
break;
}
case Qt::Key_C:
@ -290,12 +296,14 @@ void MapWidget::keyPressEvent(QKeyEvent *event)
case Qt::Key_O:
{
changeZoomLevel(-1);
updateTrack();
reloadPixmaps();
break;
}
case Qt::Key_I:
{
changeZoomLevel(1);
updateTrack();
reloadPixmaps();
break;
}
@ -322,6 +330,8 @@ void MapWidget::keyPressEvent(QKeyEvent *event)
break;
}
}
m_pos += move;
m_trackOffset += move;
updatePos();
}
@ -345,6 +355,16 @@ void MapWidget::paintEvent(QPaintEvent *event)
if (empty) {
painter.drawText(0, 0, width(), height(), Qt::AlignCenter, "No Map Loaded");
}
if (m_trackOnScreen.count() > 1) {
QPoint p1, p2 = m_trackOnScreen.first();
for (int i = 1; i < m_trackOnScreen.count(); ++i) {
p1 = m_trackOnScreen.at(i);
if (!p1.isNull()) {
painter.drawLine(p1 + m_trackOffset, p2 + m_trackOffset);
p2 = p1;
}
}
}
if (m_drawMarker) {
int i = 0;
painter.setBrush(QBrush(QColor(255, 237, 60)));
@ -557,6 +577,30 @@ void MapWidget::reloadPixmaps()
}
}
void MapWidget::updateTrack()
{
if (m_track.count() > 1) {
m_trackOnScreen.clear();
m_trackOffset = geo2screen(m_track.first().x(), m_track.first().y());
m_trackOnScreen << QPoint(0, 0);
for (int i = 1; i < m_track.count(); ++i) {
QPointF p = m_track.at(i);
if (!p.isNull()) {
m_trackOnScreen << geo2screen(p.x(), p.y()) - m_trackOffset;
} else {
m_trackOnScreen << QPoint();
}
}
}
}
void MapWidget::addMarker(const QPointF &pos, const QString &name)
{
m_markerPos << pos;
m_markerName << name;
emit markerAdded(name);
}
QString MapWidget::filename(int x, int y)
{
QString result;
@ -651,9 +695,81 @@ void MapWidget::loadMapFile(const QString &filename)
}
}
void MapWidget::loadGpx(const QString &filename)
{
QFile file(filename);
if (file.open(QIODevice::ReadOnly)) {
QXmlStreamReader xml(&file);
QPolygonF points;
QList<float> elev;
QList<int> time;
QString tag, tag2;
QString name;
QPointF pos;
while (!xml.atEnd()) {
xml.readNext();
if (xml.isStartElement()) {
if (xml.name() == "trkpt") {
tag = "trkpt";
float lat = xml.attributes().value("lat").toString().toFloat();
float lon = xml.attributes().value("lon").toString().toFloat();
points << QPointF(lon, lat);
} else if (xml.name() == "ele") {
tag2 = "ele";
} else if (xml.name() == "time") {
tag2 = "time";
} else if (xml.name() == "wpt") {
tag = "wpt";
float lat = xml.attributes().value("lat").toString().toFloat();
float lon = xml.attributes().value("lon").toString().toFloat();
pos = QPointF(lon, lat);
} else if (xml.name() == "name") {
tag2 = "name";
} else if (xml.name() == "trk" ||
xml.name() == "trkseg") {
} else {
tag2.clear();
}
} else if (xml.isEndElement()) {
if (xml.name() == "trkseg") {
if (!points.isEmpty()) {
m_track << points;
m_track << QPointF();
}
points.clear();
elev.clear();
time.clear();
} else if (xml.name() == "wpt") {
//addMarker(pos, name);
name.clear();
}
} else if (xml.isCharacters() && !xml.isWhitespace()) {
if (tag == "trkpt") {
if (tag2 == "ele") {
elev << xml.text().toString().toFloat();
} else if (tag2 == "time") {
QDateTime dt = QDateTime::fromString(xml.text().toString(), Qt::ISODate);
time << dt.toTime_t();
}
} else if (tag == "wpt") {
if (tag2 == "name") {
name = xml.text().toString();
}
}
}
}
updateTrack();
}
}
void MapWidget::loadConfig()
{
QSettings set(QDir::homePath()+"/.nanomap.conf", QSettings::NativeFormat);
set.beginGroup("map");
qreal lon = set.value("lon", 0).toReal();
qreal lat = set.value("lat", 0).toReal();
@ -661,14 +777,14 @@ void MapWidget::loadConfig()
m_usage = set.value("usage", true).toBool();
changeZoomLevel(level - m_level);
centerOnGeoPos(lon, lat);
updateTrack();
set.endGroup();
set.beginGroup("marker");
QStringList m = set.childKeys();
foreach (const QString &marker, m) {
QPointF pos = set.value(marker).toPointF();
m_markerPos << pos;
m_markerName << marker;
emit markerAdded(marker);
addMarker(pos, marker);
}
set.endGroup();
}
@ -676,6 +792,7 @@ void MapWidget::loadConfig()
void MapWidget::saveConfig()
{
QSettings set(QDir::homePath()+"/.nanomap.conf", QSettings::NativeFormat);
set.beginGroup("map");
QPointF pos = geoPos();
set.setValue("lon", pos.x());
@ -683,6 +800,7 @@ void MapWidget::saveConfig()
set.setValue("level", m_level);
set.setValue("usage", m_usage);
set.endGroup();
set.beginGroup("marker");
set.remove("");
for (int i = 0; i < m_markerPos.count(); ++i) {
@ -784,22 +902,22 @@ QPoint MapWidget::geo2screen(qreal lon, qreal lat) const
qreal MapWidget::lon2tilex(qreal lon, int z) const
{
return (lon + 180.0) / 360.0 * pow(2.0, z);
return (lon + 180.0) / 360.0 * (1 << z);
}
qreal MapWidget::lat2tiley(qreal lat, int z) const
{
return (1.0 - log(tan(lat * M_PI/180.0) + 1.0 / cos(lat * M_PI/180.0)) / M_PI) / 2.0 * pow(2.0, z);
return (1.0 - log(tan(lat * M_PI/180.0) + 1.0 / cos(lat * M_PI/180.0)) / M_PI) / 2.0 * (1 << z);
}
qreal MapWidget::tilex2lon(qreal x, int z) const
{
return x / pow(2.0, z) * 360.0 - 180;
return x / (1 << z) * 360.0 - 180;
}
qreal MapWidget::tiley2lat(qreal y, int z) const
{
qreal n = M_PI - 2.0 * M_PI * y / pow(2.0, z);
qreal n = M_PI - 2.0 * M_PI * y / (1 << z);
return 180.0 / M_PI * atan(0.5 * (exp(n) - exp(-n)));
}

6
mapwidget.h
View File

@ -58,9 +58,12 @@ private slots:
private:
void updatePos();
void reloadPixmaps();
void updateTrack();
void addMarker(const QPointF &pos, const QString &name);
QString filename(int x, int y);
QPixmap *loadPixmap(int x, int y);
void loadMapFile(const QString &filename);
void loadGpx(const QString &filename);
void saveConfig();
void downloadTile(int x, int y, int level);
void changeZoomLevel(int diff);
@ -94,6 +97,9 @@ private:
QList<QPointF> m_markerPos;
QStringList m_markerName;
bool m_drawMarker;
QPolygonF m_track;
QList<QPoint> m_trackOnScreen;
QPoint m_trackOffset;
};