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80 lines
1.6 KiB
C++
80 lines
1.6 KiB
C++
#include <QtGlobal>
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#include <QPainter>
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#include "common/rectc.h"
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#include "emptymap.h"
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#define TILE_SIZE 256
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static int limitZoom(int zoom)
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{
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if (zoom < OSM::ZOOMS.min())
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return OSM::ZOOMS.min();
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if (zoom > OSM::ZOOMS.max())
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return OSM::ZOOMS.max();
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return zoom;
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}
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EmptyMap::EmptyMap(QObject *parent) : Map(QString(), parent)
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{
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_zoom = OSM::ZOOMS.max();
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}
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QRectF EmptyMap::bounds()
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{
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return QRectF(ll2xy(OSM::BOUNDS.topLeft()), ll2xy(OSM::BOUNDS.bottomRight()));
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}
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int EmptyMap::zoomFit(const QSize &size, const RectC &rect)
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{
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if (!rect.isValid())
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_zoom = OSM::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()), TILE_SIZE));
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}
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return _zoom;
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}
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qreal EmptyMap::resolution(const QRectF &rect)
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{
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return OSM::resolution(rect.center(), _zoom, TILE_SIZE);
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}
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int EmptyMap::zoomIn()
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{
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_zoom = qMin(_zoom + 1, OSM::ZOOMS.max());
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return _zoom;
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}
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int EmptyMap::zoomOut()
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{
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_zoom = qMax(_zoom - 1, OSM::ZOOMS.min());
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return _zoom;
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}
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void EmptyMap::draw(QPainter *painter, const QRectF &rect, Flags flags)
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{
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Q_UNUSED(painter);
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Q_UNUSED(rect);
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Q_UNUSED(flags);
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}
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QPointF EmptyMap::ll2xy(const Coordinates &c)
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{
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qreal scale = OSM::zoom2scale(_zoom, TILE_SIZE);
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QPointF m = OSM::ll2m(c);
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return QPointF(m.x() / scale, m.y() / -scale);
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}
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Coordinates EmptyMap::xy2ll(const QPointF &p)
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{
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qreal scale = OSM::zoom2scale(_zoom, TILE_SIZE);
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return OSM::m2ll(QPointF(p.x() * scale, -p.y() * scale));
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}
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