mirror of
https://github.com/tumic0/GPXSee.git
synced 2024-10-07 07:13:21 +02:00
127 lines
2.7 KiB
C++
127 lines
2.7 KiB
C++
#include <QDir>
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#include <QFileInfo>
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#include <QEventLoop>
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#include "tileloader.h"
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static bool loadTileFile(Tile &tile, const QString &file)
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{
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if (!tile.pixmap().load(file, tile.zoom().toString().toLatin1())) {
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qWarning("%s: error loading tile file", qPrintable(file));
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return false;
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}
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return true;
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}
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TileLoader::TileLoader(const QString &dir, QObject *parent)
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: QObject(parent), _dir(dir)
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{
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if (!QDir().mkpath(_dir))
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qWarning("%s: %s", qPrintable(_dir), "Error creating tiles directory");
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_downloader = new Downloader(this);
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connect(_downloader, SIGNAL(finished()), this, SIGNAL(finished()));
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}
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void TileLoader::loadTilesAsync(QVector<Tile> &list)
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{
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QList<Download> dl;
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for (int i = 0; i < list.size(); i++) {
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Tile &t = list[i];
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QString file(tileFile(t));
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QFileInfo fi(file);
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if (fi.exists())
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loadTileFile(t, file);
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else {
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QUrl url(tileUrl(t));
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if (url.isLocalFile())
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loadTileFile(t, url.toLocalFile());
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else
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dl.append(Download(url, file));
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}
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}
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if (!dl.empty())
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_downloader->get(dl, _authorization);
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}
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void TileLoader::loadTilesSync(QVector<Tile> &list)
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{
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QList<Download> dl;
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for (int i = 0; i < list.size(); i++) {
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Tile &t = list[i];
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QString file(tileFile(t));
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QFileInfo fi(file);
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if (fi.exists())
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loadTileFile(t, file);
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else {
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QUrl url(tileUrl(t));
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if (url.isLocalFile())
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loadTileFile(t, url.toLocalFile());
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else
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dl.append(Download(url, file));
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}
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}
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if (dl.empty())
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return;
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QEventLoop wait;
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QObject::connect(_downloader, SIGNAL(finished()), &wait, SLOT(quit()));
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if (_downloader->get(dl, _authorization))
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wait.exec();
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for (int i = 0; i < list.size(); i++) {
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Tile &t = list[i];
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if (t.pixmap().isNull()) {
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QString file = tileFile(t);
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if (QFileInfo(file).exists())
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loadTileFile(t, file);
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}
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}
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}
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void TileLoader::clearCache()
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{
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QDir dir = QDir(_dir);
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QStringList list = dir.entryList();
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for (int i = 0; i < list.count(); i++)
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dir.remove(list.at(i));
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_downloader->clearErrors();
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}
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QUrl TileLoader::tileUrl(const Tile &tile) const
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{
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QString url(_url);
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if (!tile.bbox().isNull()) {
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QString bbox = QString("%1,%2,%3,%4").arg(
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QString::number(tile.bbox().left(), 'f', 6),
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QString::number(tile.bbox().bottom(), 'f', 6),
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QString::number(tile.bbox().right(), 'f', 6),
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QString::number(tile.bbox().top(), 'f', 6));
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url.replace("$bbox", bbox);
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} else {
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url.replace("$z", tile.zoom().toString());
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url.replace("$x", QString::number(tile.xy().x()));
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url.replace("$y", QString::number(tile.xy().y()));
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}
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return QUrl(url);
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}
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QString TileLoader::tileFile(const Tile &tile) const
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{
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return _dir + QLatin1Char('/') + tile.zoom().toString() + QLatin1Char('-')
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+ QString::number(tile.xy().x()) + QLatin1Char('-')
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+ QString::number(tile.xy().y());
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}
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