mirror of
https://github.com/tumic0/GPXSee.git
synced 2024-11-24 11:45:53 +01:00
Added support for OZF zoom levels
This commit is contained in:
parent
c708fa35fd
commit
73f06e61f0
@ -20,6 +20,7 @@
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#include "lambertconic.h"
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#include "albersequal.h"
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#include "ozf.h"
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#include "rectc.h"
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#include "offlinemap.h"
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@ -343,17 +344,20 @@ bool OfflineMap::getImageInfo(const QString &path)
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}
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if (OZF::isOZF(_imgPath)) {
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_ozf.load(_imgPath);
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_size = _ozf.size();
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if (!_ozf.load(_imgPath)) {
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_errorString = QString("%1: Error loading OZF file")
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.arg(QFileInfo(_imgPath).fileName());
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return false;
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}
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} else {
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QImageReader img(_imgPath);
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_size = img.size();
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}
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if (!_size.isValid()) {
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_errorString = QString("%1: Error reading map image")
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.arg(QFileInfo(_imgPath).fileName());
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return false;
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}
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}
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return true;
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}
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@ -410,6 +414,8 @@ OfflineMap::OfflineMap(const QString &fileName, QObject *parent)
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_img = 0;
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_projection = 0;
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_resolution = 0.0;
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_zoom = 0;
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_scale = QPointF(1.0, 1.0);
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if (suffix == "tar") {
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if (!_tar.load(fileName)) {
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@ -476,6 +482,8 @@ OfflineMap::OfflineMap(const QString &fileName, Tar &tar, QObject *parent)
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_img = 0;
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_projection = 0;
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_resolution = 0.0;
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_zoom = 0;
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_scale = QPointF(1.0, 1.0);
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QFileInfo map(fi.absolutePath());
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QFileInfo layer(map.absolutePath());
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@ -551,7 +559,7 @@ void OfflineMap::drawTiled(QPainter *painter, const QRectF &rect)
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int x = tl.x() + i * _tileSize.width();
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int y = tl.y() + j * _tileSize.height();
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if (!QRectF(QPointF(x, y), _ozf.tileSize()).intersects(bounds())) {
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if (!QRectF(QPointF(x, y), _tileSize).intersects(bounds())) {
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painter->fillRect(QRectF(QPoint(x, y), _tileSize), Qt::white);
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continue;
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}
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@ -594,22 +602,24 @@ void OfflineMap::drawOZF(QPainter *painter, const QRectF &rect)
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int y = tl.y() + j * _ozf.tileSize().height();
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if (!QRectF(QPointF(x, y), _ozf.tileSize()).intersects(bounds())) {
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painter->fillRect(QRectF(QPoint(x, y), _tileSize), Qt::white);
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painter->fillRect(QRectF(QPoint(x, y), _ozf.tileSize()),
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Qt::white);
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continue;
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}
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QPixmap pixmap;
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QString key = _ozf.fileName() + "/" + QString::number(x)
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+ "_" + QString::number(y);
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QString key = _ozf.fileName() + "/" + QString::number(_zoom) + "_"
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+ QString::number(x) + "_" + QString::number(y);
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if (!QPixmapCache::find(key, &pixmap)) {
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pixmap = _ozf.tile(x, y);
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pixmap = _ozf.tile(_zoom, x, y);
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if (!pixmap.isNull())
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QPixmapCache::insert(key, pixmap);
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}
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if (pixmap.isNull()) {
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qWarning("%s: error loading tile image", qPrintable(key));
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painter->fillRect(QRectF(QPoint(x, y), _tileSize), Qt::white);
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painter->fillRect(QRectF(QPoint(x, y), _ozf.tileSize()),
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Qt::white);
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} else
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painter->drawPixmap(QPoint(x, y), pixmap);
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}
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@ -636,3 +646,101 @@ void OfflineMap::draw(QPainter *painter, const QRectF &rect)
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else
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drawImage(painter, rect);
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}
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QPointF OfflineMap::ll2xy(const Coordinates &c)
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{
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if (_ozf.isOpen()) {
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QPointF p(_transform.map(_projection->ll2xy(c)));
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return QPointF(p.x() * _scale.x(), p.y() * _scale.y());
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} else
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return _transform.map(_projection->ll2xy(c));
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}
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Coordinates OfflineMap::xy2ll(const QPointF &p)
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{
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if (_ozf.isOpen()) {
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return _projection->xy2ll(_inverted.map(QPointF(p.x() / _scale.x(),
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p.y() / _scale.y())));
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} else
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return _projection->xy2ll(_inverted.map(p));
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}
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QRectF OfflineMap::bounds() const
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{
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if (_ozf.isOpen())
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return QRectF(QPointF(0, 0), _ozf.size(_zoom));
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else
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return QRectF(QPointF(0, 0), _size);
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}
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qreal OfflineMap::resolution(const QPointF &p) const
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{
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Q_UNUSED(p);
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if (_ozf.isOpen())
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return _resolution / ((_scale.x() + _scale.y()) / 2.0);
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else
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return _resolution;
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}
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qreal OfflineMap::zoomFit(const QSize &size, const RectC &br)
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{
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if (_ozf.isOpen()) {
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if (!br.isValid())
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rescale(0);
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else {
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QRect sbr(QRectF(_transform.map(_projection->ll2xy(br.topLeft())),
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_transform.map(_projection->ll2xy(br.bottomRight())))
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.toRect().normalized());
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for (int i = 0; i < _ozf.zooms(); i++) {
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rescale(i);
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if (sbr.size().width() * _scale.x() <= size.width()
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&& sbr.size().height() * _scale.y() <= size.height())
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break;
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}
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}
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}
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return _zoom;
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}
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qreal OfflineMap::zoomFit(qreal resolution, const Coordinates &c)
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{
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Q_UNUSED(c);
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if (_ozf.isOpen()) {
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for (int i = 0; i < _ozf.zooms(); i++) {
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rescale(i);
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qreal sr = _resolution / ((_scale.x() + _scale.y()) / 2.0);
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if (sr >= resolution)
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break;
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}
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}
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return _zoom;
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}
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qreal OfflineMap::zoomIn()
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{
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if (_ozf.isOpen())
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rescale(qMax(_zoom - 1, 0));
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return _zoom;
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}
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qreal OfflineMap::zoomOut()
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{
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if (_ozf.isOpen())
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rescale(qMin(_zoom + 1, _ozf.zooms() - 1));
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return _zoom;
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}
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void OfflineMap::rescale(int zoom)
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{
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_zoom = zoom;
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_scale = QPointF(
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(qreal)_ozf.size(_zoom).width() / (qreal)_ozf.size(0).width(),
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(qreal)_ozf.size(_zoom).height() / (qreal)_ozf.size(0).height());
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}
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@ -23,19 +23,17 @@ public:
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const QString &name() const {return _name;}
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QRectF bounds() const {return QRectF(QPointF(0, 0), _size);}
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qreal resolution(const QPointF &) const {return _resolution;}
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QRectF bounds() const;
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qreal resolution(const QPointF &p) const;
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qreal zoom() const {return 0;}
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qreal zoomFit(const QSize &, const RectC &) {return 0;}
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qreal zoomFit(qreal, const Coordinates &) {return 0;}
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qreal zoomIn() {return 0;}
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qreal zoomOut() {return 0;}
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qreal zoom() const {return _zoom;}
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qreal zoomFit(const QSize &size, const RectC &br);
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qreal zoomFit(qreal resolution, const Coordinates &c);
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qreal zoomIn();
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qreal zoomOut();
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QPointF ll2xy(const Coordinates &c)
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{return _transform.map(_projection->ll2xy(c));}
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Coordinates xy2ll(const QPointF &p)
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{return _projection->xy2ll(_inverted.map(p));}
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QPointF ll2xy(const Coordinates &c);
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Coordinates xy2ll(const QPointF &p);
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void draw(QPainter *painter, const QRectF &rect);
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@ -86,6 +84,8 @@ private:
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void drawOZF(QPainter *painter, const QRectF &rect);
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void drawImage(QPainter *painter, const QRectF &rect);
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void rescale(int zoom);
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QString _name;
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bool _valid;
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QString _errorString;
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@ -102,6 +102,9 @@ private:
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QString _imgPath;
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QSize _tileSize;
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QString _tileName;
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int _zoom;
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QPointF _scale;
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};
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#endif // OFFLINEMAP_H
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105
src/ozf.cpp
105
src/ozf.cpp
@ -5,7 +5,6 @@
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#define OZF2_MAGIC 0x7778
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#define OZF3_MAGIC 0x7780
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#define SEPARATOR 0x77777777
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static const quint8 XKEY[] =
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{
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@ -39,21 +38,22 @@ template<class T> bool OZF::readValue(T &val)
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return true;
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}
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bool OZF::read(void *data, size_t size)
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bool OZF::read(void *data, size_t size, size_t decryptSize)
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{
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if (_file.read((char*)data, size) < (qint64)size)
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return false;
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if (_decrypt)
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decrypt(data, size, _key);
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decrypt(data, decryptSize ? qMin(decryptSize, size) : size, _key);
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return true;
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}
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bool OZF::readKey()
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bool OZF::initOZF3()
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{
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quint8 randomNumber, initial;
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quint32 keyblock;
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quint8 h1[8];
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if (!_file.seek(14))
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@ -66,7 +66,15 @@ bool OZF::readKey()
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if (!readValue(initial))
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return false;
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_decrypt = true; _key = initial;
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_decrypt = true;
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_key = initial;
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if (!_file.seek(0))
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return false;
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if (!read(h1, sizeof(h1)))
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return false;
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_tileSize = *(h1 + 6);
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if (!_file.seek(15 + randomNumber))
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return false;
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if (!readValue(keyblock))
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@ -104,21 +112,28 @@ bool OZF::readKey()
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return true;
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}
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bool OZF::initOZF2()
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{
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if (!_file.seek(6))
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return false;
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if (!readValue(_tileSize))
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return false;
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return true;
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}
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bool OZF::readHeaders()
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{
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quint16 magic;
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quint32 separator;
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if (!readValue(magic))
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return false;
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if (magic == OZF2_MAGIC) {
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if (!_file.seek(_file.pos() + 52))
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return false;
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if (!readValue(separator) || separator != SEPARATOR)
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if (!initOZF2())
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return false;
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} else if (magic == OZF3_MAGIC) {
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if (!readKey())
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if (!initOZF3())
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return false;
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} else
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return false;
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@ -128,21 +143,23 @@ bool OZF::readHeaders()
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bool OZF::readTileTable()
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{
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quint32 offset, bgr0, w, h;
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quint32 tableOffset, headerOffset, bgr0, w, h;
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quint16 x, y;
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int zooms;
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if (!_file.seek(_file.size() - sizeof(offset)))
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if (!_file.seek(_file.size() - sizeof(tableOffset)))
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return false;
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// table offset
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if (!readValue(offset))
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if (!readValue(tableOffset))
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return false;
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if (!_file.seek(offset))
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zooms = (_file.size() - tableOffset - sizeof(quint32)) / sizeof(quint32);
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for (int i = 0; i < zooms - 2; i++) {
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if (!_file.seek(tableOffset + i * sizeof(quint32)))
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return false;
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// tiles offset (zoom level 0)
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if (!readValue(offset))
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if (!readValue(headerOffset))
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return false;
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if (!_file.seek(offset))
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if (!_file.seek(headerOffset))
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return false;
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if (!readValue(w))
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@ -154,27 +171,31 @@ bool OZF::readTileTable()
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if (!readValue(y))
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return false;
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_size = QSize(w, h);
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_dim = QSize(x, y);
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Zoom zoom;
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zoom.size = QSize(w, h);
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zoom.dim = QSize(x, y);
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_palette = QVector<quint32>(256);
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if (!read(&(_palette[0]), sizeof(quint32) * 256))
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zoom.palette = QVector<quint32>(256);
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if (!read(&(zoom.palette[0]), sizeof(quint32) * 256))
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return false;
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for (int i = 0; i < _palette.size(); i++) {
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bgr0 = qFromLittleEndian(_palette.at(i));
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for (int i = 0; i < zoom.palette.size(); i++) {
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bgr0 = qFromLittleEndian(zoom.palette.at(i));
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quint32 b = (bgr0 & 0x000000FF);
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quint32 g = (bgr0 & 0x0000FF00) >> 8;
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quint32 r = (bgr0 & 0x00FF0000) >> 16;
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_palette[i] = 0xFF000000 | r << 16 | g << 8 | b;
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zoom.palette[i] = 0xFF000000 | r << 16 | g << 8 | b;
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}
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_tiles = QVector<quint32>(_dim.width() * _dim.height() + 1);
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for (int i = 0; i < _tiles.size(); i++)
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if (!readValue(_tiles[i]))
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zoom.tiles = QVector<quint32>(zoom.dim.width() * zoom.dim.height() + 1);
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for (int i = 0; i < zoom.tiles.size(); i++)
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if (!readValue(zoom.tiles[i]))
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return false;
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_zooms.append(zoom);
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}
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return true;
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}
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@ -196,23 +217,25 @@ bool OZF::load(const QString &path)
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if (!readTileTable()) {
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qWarning("%s: file format error", qPrintable(_file.fileName()));
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_file.close();
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_size = QSize();
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return false;
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}
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return true;
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}
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QPixmap OZF::tile(int x, int y)
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QPixmap OZF::tile(int zoom, int x, int y)
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{
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Q_ASSERT(_file.isOpen());
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Q_ASSERT(0 <= zoom && zoom < _zooms.count());
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int i = (y/tileSize().height()) * _dim.width() + (x/tileSize().width());
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if (i >= _tiles.size() - 1 || i < 0)
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const Zoom &z = _zooms.at(zoom);
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int i = (y/tileSize().height()) * z.dim.width() + (x/tileSize().width());
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if (i >= z.tiles.size() - 1 || i < 0)
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return QPixmap();
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int size = _tiles.at(i+1) - _tiles.at(i);
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if (!_file.seek(_tiles.at(i)))
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int size = z.tiles.at(i+1) - z.tiles.at(i);
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if (!_file.seek(z.tiles.at(i)))
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return QPixmap();
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quint32 bes = qToBigEndian(tileSize().width() * tileSize().height());
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@ -220,21 +243,27 @@ QPixmap OZF::tile(int x, int y)
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ba.resize(sizeof(bes) + size);
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*(ba.data()) = bes;
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if (_file.read(ba.data() + sizeof(bes), size) != size)
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if (!read(ba.data() + sizeof(bes), size, 16))
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return QPixmap();
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if (_decrypt)
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decrypt(ba.data() + sizeof(bes), qMin(16, size), _key);
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QByteArray uba = qUncompress(ba);
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if (uba.size() != tileSize().width() * tileSize().height())
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return QPixmap();
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QImage img((const uchar*)uba.constData(), tileSize().width(),
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tileSize().height(), QImage::Format_Indexed8);
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img.setColorTable(_palette);
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img.setColorTable(z.palette);
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return QPixmap::fromImage(img.mirrored());
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}
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QSize OZF::size(int zoom) const
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{
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Q_ASSERT(_file.isOpen());
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Q_ASSERT(0 <= zoom && zoom < _zooms.count());
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return _zooms.at(zoom).size;
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}
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bool OZF::isOZF(const QString &path)
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{
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QFile file(path);
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28
src/ozf.h
28
src/ozf.h
@ -4,6 +4,7 @@
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#include <QString>
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#include <QSize>
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#include <QColor>
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#include <QList>
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#include <QVector>
|
||||
#include <QFile>
|
||||
#include <QPixmap>
|
||||
@ -18,27 +19,32 @@ public:
|
||||
QString fileName() const {return _file.fileName();}
|
||||
bool isOpen() const {return _file.isOpen();}
|
||||
|
||||
QSize size() const {return _size;}
|
||||
QSize tileSize() const {return QSize(64, 64);}
|
||||
QPixmap tile(int x, int y);
|
||||
int zooms() const {return _zooms.size();}
|
||||
QSize size(int zoom) const;
|
||||
QSize tileSize() const {return QSize(_tileSize, _tileSize);}
|
||||
QPixmap tile(int zoom, int x, int y);
|
||||
|
||||
static bool isOZF(const QString &path);
|
||||
|
||||
private:
|
||||
struct Zoom {
|
||||
QSize size;
|
||||
QSize dim;
|
||||
QVector<QRgb> palette;
|
||||
QVector<quint32> tiles;
|
||||
};
|
||||
|
||||
template<class T> bool readValue(T &val);
|
||||
bool read(void *data, size_t size);
|
||||
bool readKey();
|
||||
bool read(void *data, size_t size, size_t decryptSize = 0);
|
||||
bool initOZF3();
|
||||
bool initOZF2();
|
||||
bool readHeaders();
|
||||
bool readTileTable();
|
||||
|
||||
quint16 _tileSize;
|
||||
bool _decrypt;
|
||||
quint8 _key;
|
||||
|
||||
QSize _size;
|
||||
QSize _dim;
|
||||
QVector<QRgb> _palette;
|
||||
QVector<quint32> _tiles;
|
||||
|
||||
QList<Zoom> _zooms;
|
||||
QFile _file;
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user