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Improved track loading logic

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This commit is contained in:
Martin Tůma 2016-03-03 09:15:56 +01:00
parent 4cba2ddefd
commit 919d53ade9
2 changed files with 62 additions and 50 deletions
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111
src/trackview.cpp
View File

@ -33,7 +33,7 @@ TrackView::TrackView(QWidget *parent)
_mapScale->setZValue(2.0);
_zoom = -1;
_scale = 1.0;
_scale = -1.0;
_map = 0;
_maxLen = 0;
}
@ -43,66 +43,75 @@ TrackView::~TrackView()
delete _scene;
}
void TrackView::addTrack(const QVector<QPointF> &track)
{
QPainterPath path;
QGraphicsPathItem *pi;
MarkerItem *mi;
QColor color = _palette.color();
if (track.size() < 2)
return;
_tracks.append(track);
path.moveTo(track.at(0).x(), -track.at(0).y());
for (int i = 1; i < track.size(); i++)
path.lineTo(track.at(i).x(), -track.at(i).y());
_maxLen = qMax(path.length(), _maxLen);
pi = new QGraphicsPathItem(path);
_trackPaths.append(pi);
_zoom = scale2zoom(trackScale());
_scale = mapScale();
QBrush brush(color, Qt::SolidPattern);
QPen pen(brush, TRACK_WIDTH * _scale);
pi->setPen(pen);
pi->setScale(1.0/_scale);
_scene->addItem(pi);
mi = new MarkerItem(pi);
_markers.append(mi);
mi->setPos(pi->path().pointAtPercent(0));
mi->setScale(_scale);
}
void TrackView::loadGPX(const GPX &gpx)
{
qreal scale = _scale;
for (int i = 0; i < gpx.trackCount(); i++) {
QVector<QPointF> track;
QPainterPath path;
QGraphicsPathItem *pi;
MarkerItem *mi;
QColor color = _palette.color();
qreal prevScale = _scale;
gpx.track(i).track(track);
if (track.size() < 2)
continue;
_tracks.append(track);
path.moveTo(track.at(0).x(), -track.at(0).y());
for (int i = 1; i < track.size(); i++)
path.lineTo(track.at(i).x(), -track.at(i).y());
_maxLen = qMax(path.length(), _maxLen);
pi = new QGraphicsPathItem(path);
_trackPaths.append(pi);
_zoom = scale2zoom(trackScale());
_scale = mapScale();
QBrush brush(color, Qt::SolidPattern);
QPen pen(brush, TRACK_WIDTH * _scale);
pi->setPen(pen);
pi->setScale(1.0/_scale);
_scene->addItem(pi);
mi = new MarkerItem(pi);
_markers.append(mi);
mi->setPos(pi->path().pointAtPercent(0));
mi->setScale(_scale);
if (_trackPaths.size() > 1 && prevScale != _scale)
rescale(_scale);
QRectF br = trackBoundingRect();
QRectF ba = br.adjusted(-TILE_SIZE, -TILE_SIZE, TILE_SIZE, TILE_SIZE);
_scene->setSceneRect(ba);
centerOn(ba.center());
if (_mapScale->scene() != _scene)
_scene->addItem(_mapScale);
_mapScale->setLatitude(track.at(track.size() / 2).y());
_mapScale->setZoom(_zoom);
addTrack(track);
}
if (_trackPaths.empty())
return;
if (_trackPaths.size() > 1 && scale != _scale)
rescale(_scale);
QRectF br = trackBoundingRect();
QRectF ba = br.adjusted(-TILE_SIZE, -TILE_SIZE, TILE_SIZE, TILE_SIZE);
_scene->setSceneRect(ba);
centerOn(ba.center());
_mapScale->setLatitude(-(br.center().ry() * _scale));
_mapScale->setZoom(_zoom);
if (_mapScale->scene() != _scene)
_scene->addItem(_mapScale);
}
QRectF TrackView::trackBoundingRect() const
{
qreal bottom, top, left, right;
if (_trackPaths.empty())
return QRectF();
bottom = _trackPaths.at(0)->sceneBoundingRect().bottom();
top = _trackPaths.at(0)->sceneBoundingRect().top();
left = _trackPaths.at(0)->sceneBoundingRect().left();
@ -322,8 +331,10 @@ void TrackView::clear()
_palette.reset();
_maxLen = 0;
_zoom = -1;
_scale = -1.0;
_scene->setSceneRect(0, 0, 0, 0);
_scene->setSceneRect(QRectF());
}
void TrackView::movePositionMarker(qreal val)

1
src/trackview.h
View File

@ -44,6 +44,7 @@ private slots:
void redraw();
private:
void addTrack(const QVector<QPointF> &track);
QRectF trackBoundingRect() const;
qreal trackScale() const;
qreal mapScale() const;