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tilecache.cpp
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tilecache.cpp
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/************************************************************************************
* QSlippyMap - Tile based slippery map *
* Copyright (C) 2017 Michael Carpenter ([email protected]) *
* *
* This file is a part of QSlippyMap *
* *
* QSlippyMap is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation, version *
* 2.1 of the License. *
* *
* QSlippyMap is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
************************************************************************************/
#include "tilecache.h"
#include <QDir>
#include <QStandardPaths>
#include <QMutexLocker>
#include <QDebug>
#include <QApplication>
TileCache::TileCache()
{
QDir dir(QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation));
dir.mkpath(QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/GOOGLE");
dir.mkpath(QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/MAPBOX");
m_cacheLocation = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/MAPBOX";
UserAgent = QString("Mozilla/5.0 (Windows NT 6.1; WOW64; rv:%1.0) Gecko/%2%3%4 Firefox/%5.0.%6").arg(QString::number(Random(3,14)), QString::number(Random(QDate().currentDate().year() - 4, QDate().currentDate().year())), QString::number(Random(11,12)), QString::number(Random(10,30)), QString::number(Random(3,14)), QString::number(Random(1,10))).toLatin1();
m_tileTypes = MAPBOX_TILES;
start();
}
void TileCache::SetGoogle()
{
m_tileTypes = GOOGLE_TILES;
m_cacheLocation = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/GOOGLE";
m_tileExistsMap.clear();
zoomLevelChanged();
}
void TileCache::SetMapbox()
{
m_tileTypes = MAPBOX_TILES;
m_cacheLocation = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/MAPBOX";
m_tileExistsMap.clear();
zoomLevelChanged();
}
int TileCache::Random(int low, int high)
{
return low + qrand() % (high - low);
}
void TileCache::zoomLevelChanged()
{
for (int i=0;i<m_tileIdList.keys().size();i++)
{
m_tileIdList.keys().at(i)->abort();
}
m_tileIdList.clear();
emit networkTileUpdate(0);
}
void TileCache::getTile(int x, int y, int z)
{
QMutexLocker locker(&m_tileMutex);
TileReq req;
req.x = x;
req.y = y;
req.z = z;
m_tileQueue.append(req);
return;
QDir cachedir(m_cacheLocation);
if (!cachedir.exists(QString::number(x)))
{
//return QImage();
}
cachedir.cd(QString::number(x));
if (!cachedir.exists(QString::number(y)))
{
//return QImage();
}
cachedir.cd(QString::number(y));
if (cachedir.exists(QString::number(z) + ".png"))
{
//cachedir.remove(QString::number(z) + ".png");
QImage img;
img.load(cachedir.absoluteFilePath(QString::number(z) + ".png"));
//return img;
}
//return QImage();
//return m_tileMap.value(x).value(y).value(z);
}
void TileCache::add(int x, int y, int z, QImage img)
{
QDir cachedir(m_cacheLocation);
if (!cachedir.exists(QString::number(x)))
{
cachedir.mkdir(QString::number(x));
}
if (!m_tileExistsMap.contains(x))
{
m_tileExistsMap[x] = QMap<int,QMap<int,bool> >();
}
cachedir.cd(QString::number(x));
if (!cachedir.exists(QString::number(y)))
{
cachedir.mkdir(QString::number(y));
}
if (!m_tileExistsMap[x].contains(y))
{
m_tileExistsMap[x][y] = QMap<int,bool>();
}
cachedir.cd(QString::number(y));
if (cachedir.exists(QString::number(z) + ".png"))
{
//cachedir.remove(QString::number(z) + ".png");
}
if (!m_tileExistsMap[x][y].contains(z))
{
m_tileExistsMap[x][y][z] = true;
}
//QFile imgfile(cachedir.absoluteFilePath(QString::number(z) + ".png"));
//imgfile.open(QIODevice::ReadWrite | QIODevice::Truncate);
img.save(cachedir.absoluteFilePath(QString::number(z) + ".png"));
return;
/*if (!m_tileMap.contains(x))
{
m_tileMap[x] = QMap<int,QMap<int,QImage> >();
}
if (!m_tileMap.value(x).contains(y))
{
m_tileMap[x][y] = QMap<int,QImage>();
}
m_tileMap[x][y][z] = img;*/
}
bool TileCache::contains(int x, int y, int z)
{
if (m_tileExistsMap.contains(x))
{
if (m_tileExistsMap.value(x).contains(y))
{
if (m_tileExistsMap.value(x).value(y).contains(z))
{
return m_tileExistsMap.value(x).value(y).value(z);
}
}
}
return false;
QDir cachedir(m_cacheLocation);
if (cachedir.exists(QString::number(x)))
{
cachedir.cd(QString::number(x));
if (cachedir.exists(QString::number(y)))
{
cachedir.cd(QString::number(y));
if (cachedir.exists(QString::number(z) + ".png"))
{
return true;
}
}
}
return false;
/*if (m_tileMap.contains(x))
{
if (m_tileMap.value(x).contains(y))
{
if (m_tileMap.value(x).value(y).contains(zoom))
{
return true;
}
}
}
return false;*/
}
void TileCache::run()
{
m_nam = new QNetworkAccessManager();
qDebug() << QSslSocket::sslLibraryBuildVersionString();
qDebug() << QSslSocket::sslLibraryVersionString();
//Populate initial cache list
QDir cachedir(m_cacheLocation);
QStringList xlist = cachedir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
foreach (QString x,xlist)
{
if (!m_tileExistsMap.contains(x.toInt()))
{
m_tileExistsMap[x.toInt()] = QMap<int,QMap<int,bool> >();
}
cachedir.cd(x);
QStringList ylist = cachedir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
foreach (QString y, ylist)
{
if (!m_tileExistsMap[x.toInt()].contains(y.toInt()))
{
m_tileExistsMap[x.toInt()][y.toInt()] = QMap<int,bool>();
}
cachedir.cd(y);
QStringList zlist = cachedir.entryList(QDir::Files | QDir::NoDotAndDotDot);
foreach (QString z,zlist)
{
if (z.contains("."))
{
QString zstr = z.split(".")[0];
if (!m_tileExistsMap[x.toInt()][y.toInt()].contains(zstr.toInt()))
{
m_tileExistsMap[x.toInt()][y.toInt()][zstr.toInt()] = true;
}
}
}
cachedir.cdUp();
}
cachedir.cdUp();
}
qDebug() << "Finished loading current tiles";
QList<TileReq> privReqList;
while (true)
{
m_tileMutex.lock();
for (int i=0;i<m_tileQueue.size();i++)
{
privReqList.append(m_tileQueue.at(i));
}
m_tileQueue.clear();
m_tileMutex.unlock();
for (int i=0;i<privReqList.size();i++)
{
bool found = true;
QDir cachedir(m_cacheLocation);
if (cachedir.exists(QString::number(privReqList.at(i).x)))
{
cachedir.cd(QString::number(privReqList.at(i).x));
if (cachedir.exists(QString::number(privReqList.at(i).y)))
{
cachedir.cd(QString::number(privReqList.at(i).y));
if (cachedir.exists(QString::number(privReqList.at(i).z) + ".png"))
{
//cachedir.remove(QString::number(z) + ".png");
QImage img;
img.load(cachedir.absoluteFilePath(QString::number(privReqList.at(i).z) + ".png"));
//return img;
emit tileRecv(privReqList.at(i).x,privReqList.at(i).y,privReqList.at(i).z,img);
emit localTileUpdate(privReqList.size() - (i+1));
continue;
}
}
}
//No image found here, queue it up to be grabbed from the network.
QNetworkRequest req;
if (m_tileTypes == GOOGLE_TILES)
{
// Google:
QString url = "https://mt0.google.com/vt/";
QString loc = "lyrs=s&x=%1&y=%2&z=%3";
req.setRawHeader("User-Agent",UserAgent);
req.setUrl(url + loc.arg(privReqList.at(i).x).arg(privReqList.at(i).y).arg(privReqList.at(i).z));
}
else if (m_tileTypes == MAPBOX_TILES)
{
// Mapbox:
QString url = "https://api.mapbox.com/styles/v1/mapbox/satellite-streets-v11/tiles/256";
QString loc = "/%3/%1/%2?access_token=pk.eyJ1IjoibWFsY29tMjA3MyIsImEiOiJjanEydGx5ajcxNGpxNDltbHczZWZjcGR1In0.pR1dIDpX6ZmoatSqmK93pA";
req.setRawHeader("User-Agent",UserAgent);
req.setUrl(url + loc.arg(privReqList.at(i).x).arg(privReqList.at(i).y).arg(privReqList.at(i).z));
}
QNetworkReply *reply = m_nam->get(req);
connect(reply,SIGNAL(finished()),this,SLOT(networkFinished()));
connect(reply,SIGNAL(error(QNetworkReply::NetworkError)),this,SLOT(networkError(QNetworkReply::NetworkError)));
emit networkTileUpdate(m_tileIdList.keys().count());
m_tileIdList[reply] = QPair<QPair<int,int> , int>(QPair<int,int>(privReqList.at(i).x,privReqList.at(i).y),privReqList.at(i).z);
}
if (privReqList.size() == 0)
{
msleep(10);
}
else
{
privReqList.clear();
emit localTileUpdate(0);
}
QApplication::processEvents();
}
}
void TileCache::networkError(QNetworkReply::NetworkError err)
{
//qDebug() << "Network Error:" << err;
}
void TileCache::networkFinished()
{
QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
if (reply->error() != QNetworkReply::NoError)
{
return;
}
//qDebug() << reply->errorString();
QByteArray imgdata = reply->readAll();
QImage img;
if (!img.loadFromData(imgdata))
{
qDebug() << "Failed to create IMG from web data";
qDebug() << QString(imgdata);
emit networkTileUpdate(m_tileIdList.keys().count()-1);
m_tileIdList.remove(reply);
return;
}
//qDebug() << "Downloaded tile" << m_tileIdList.keys().count();
emit networkTileUpdate(m_tileIdList.keys().count()-1);
emit tileRecv(m_tileIdList[reply].first.first,m_tileIdList[reply].first.second,m_tileIdList[reply].second,img);
this->add(m_tileIdList[reply].first.first,m_tileIdList[reply].first.second,m_tileIdList[reply].second,img);
m_tileIdList.remove(reply);
//m_scene->addItem(t);
}