mirror of
https://github.com/tumic0/GPXSee.git
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150 lines
3.9 KiB
C++
150 lines
3.9 KiB
C++
#include <QtCore>
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#include <QPainter>
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#include <QDir>
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#include "common/rectc.h"
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#include "common/programpaths.h"
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#include "downloader.h"
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#include "osm.h"
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#include "onlinemap.h"
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OnlineMap::OnlineMap(const QString &fileName, const QString &name,
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const QString &url, const Range &zooms, const RectC &bounds, qreal tileRatio,
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const Authorization &authorization, int tileSize, bool scalable, bool invertY,
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bool quadTiles, QObject *parent)
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: Map(fileName, parent), _name(name), _zooms(zooms), _bounds(bounds),
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_zoom(_zooms.max()), _mapRatio(1.0), _tileRatio(tileRatio),
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_tileSize(tileSize), _scalable(scalable), _invertY(invertY)
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{
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_tileLoader = new TileLoader(QDir(ProgramPaths::tilesDir()).filePath(_name),
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this);
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_tileLoader->setUrl(url);
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_tileLoader->setAuthorization(authorization);
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_tileLoader->setQuadTiles(quadTiles);
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connect(_tileLoader, SIGNAL(finished()), this, SIGNAL(tilesLoaded()));
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}
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QRectF OnlineMap::bounds()
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{
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return QRectF(ll2xy(_bounds.topLeft()), ll2xy(_bounds.bottomRight()));
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}
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int OnlineMap::limitZoom(int zoom) const
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{
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if (zoom < _zooms.min())
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return _zooms.min();
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if (zoom > _zooms.max())
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return _zooms.max();
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return zoom;
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}
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int OnlineMap::zoomFit(const QSize &size, const RectC &rect)
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{
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if (!rect.isValid())
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_zoom = _zooms.max();
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else {
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QRectF tbr(OSM::ll2m(rect.topLeft()), OSM::ll2m(rect.bottomRight()));
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QPointF sc(tbr.width() / size.width(), tbr.height() / size.height());
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_zoom = limitZoom(OSM::scale2zoom(qMax(sc.x(), -sc.y())
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/ coordinatesRatio(), _tileSize));
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}
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return _zoom;
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}
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qreal OnlineMap::resolution(const QRectF &rect)
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{
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return OSM::resolution(rect.center(), _zoom, _tileSize);
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}
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int OnlineMap::zoomIn()
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{
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_zoom = qMin(_zoom + 1, _zooms.max());
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return _zoom;
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}
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int OnlineMap::zoomOut()
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{
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_zoom = qMax(_zoom - 1, _zooms.min());
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return _zoom;
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}
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void OnlineMap::setDevicePixelRatio(qreal deviceRatio, qreal mapRatio)
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{
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_mapRatio = mapRatio;
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if (_scalable) {
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_tileLoader->setScaledSize(_tileSize * deviceRatio);
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_tileRatio = deviceRatio;
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}
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}
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qreal OnlineMap::coordinatesRatio() const
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{
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return _mapRatio > 1.0 ? _mapRatio / _tileRatio : 1.0;
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}
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qreal OnlineMap::imageRatio() const
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{
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return _mapRatio > 1.0 ? _mapRatio : _tileRatio;
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}
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qreal OnlineMap::tileSize() const
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{
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return (_tileSize / coordinatesRatio());
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}
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void OnlineMap::draw(QPainter *painter, const QRectF &rect, Flags flags)
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{
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qreal scale = OSM::zoom2scale(_zoom, _tileSize);
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QPoint tile = OSM::mercator2tile(QPointF(rect.topLeft().x() * scale,
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-rect.topLeft().y() * scale) * coordinatesRatio(), _zoom);
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QPointF tl(floor(rect.left() / tileSize())
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* tileSize(), floor(rect.top() / tileSize()) * tileSize());
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QSizeF s(rect.right() - tl.x(), rect.bottom() - tl.y());
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int width = _zoom ? qCeil(s.width() / tileSize()) : 1;
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int height = _zoom ? qCeil(s.height() / tileSize()) : 1;
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QVector<Tile> tiles;
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tiles.reserve(width * height);
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for (int i = 0; i < width; i++)
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for (int j = 0; j < height; j++)
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tiles.append(Tile(QPoint(tile.x() + i, _invertY ? (1<<_zoom)
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- (tile.y() + j) - 1 : tile.y() + j), _zoom));
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if (flags & Map::Block)
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_tileLoader->loadTilesSync(tiles);
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else
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_tileLoader->loadTilesAsync(tiles);
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for (int i = 0; i < tiles.count(); i++) {
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Tile &t = tiles[i];
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QPointF tp = _zoom ? QPointF(tl.x() + (t.xy().x() - tile.x())
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* tileSize(), tl.y() + ((_invertY ? (1<<_zoom) - t.xy().y() - 1 :
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t.xy().y()) - tile.y()) * tileSize())
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: QPointF(-_tileSize/2, -_tileSize/2);
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if (!t.pixmap().isNull()) {
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t.pixmap().setDevicePixelRatio(imageRatio());
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painter->drawPixmap(tp, t.pixmap());
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}
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}
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}
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QPointF OnlineMap::ll2xy(const Coordinates &c)
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{
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qreal scale = OSM::zoom2scale(_zoom, _tileSize);
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QPointF m = OSM::ll2m(c);
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return QPointF(m.x() / scale, m.y() / -scale) / coordinatesRatio();
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}
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Coordinates OnlineMap::xy2ll(const QPointF &p)
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{
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qreal scale = OSM::zoom2scale(_zoom, _tileSize);
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return OSM::m2ll(QPointF(p.x() * scale, -p.y() * scale)
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* coordinatesRatio());
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}
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