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ambiencemanager.cpp
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ambiencemanager.cpp
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#include "ambiencemanager.h"
#include <QStandardPaths>
#include <QDebug>
#include <QImage>
#include <QFileInfo>
#include <QDir>
#include <QVariant>
AmbienceManager::AmbienceManager(QObject *parent) :
QObject(parent),
mThumbnailReply(0),
mFullImageReply(0),
mThumbnail(0),
mFullImage(0)
{
mPictureLocation = QStandardPaths::writableLocation(QStandardPaths::PicturesLocation);
mCacheLocation = QStandardPaths::writableLocation(QStandardPaths::DataLocation);
QDir root(QDir::rootPath());
if (!root.mkpath(mCacheLocation))
{
qDebug() << "failed to create cachedir";
}
}
AmbienceManager::~AmbienceManager()
{
if (mThumbnail)
{
mThumbnail->close();
// if client was shut down during thumbnail download
if (mThumbnail->size() == 0)
{
// remove empty file
mThumbnail->remove();
}
delete mThumbnail;
mThumbnail = 0;
}
if (mFullImage)
{
mFullImage->close();
// if client was shut down during full image download
if (mFullImage->size() == 0)
{
// remove empty file
mFullImage->remove();
}
delete mFullImage;
mFullImage = 0;
}
// delete cached full size images
foreach (QString fileName, mSavedFullImages)
{
QFile::remove(fileName);
}
}
QString AmbienceManager::thumbnail(QString name)
{
return mCacheLocation + "/" + name;
}
bool AmbienceManager::hasThumbnail(QString name)
{
QString filePath = mCacheLocation + "/" + name;
return (QFile::exists(filePath));
}
void AmbienceManager::saveImageToGallery(QString name)
{
if (QFile::exists(mCacheLocation + "/ambience-" + name))
{
QFile::copy(mCacheLocation + "/ambience-" + name, mPictureLocation + "/ambience-" + name);
mSavedFullImages.append(mCacheLocation + "/ambience-" + name);
emit saveImageToGallerySucceeded();
}
else
{
qDebug() << name << "does not exist, cannot copy to gallery";
}
}
void AmbienceManager::saveThumbnail(QUrl fileUrl, QString name)
{
mThumbnailQueue.enqueue(qMakePair(fileUrl, name));
if (!mThumbnailReply) // if no ongoing thumbnail download
{
saveNextThumbnail();
}
}
void AmbienceManager::saveNextThumbnail()
{
QPair<QUrl, QString> thumbnail = mThumbnailQueue.dequeue();
QNetworkRequest request;
request.setUrl(QUrl(thumbnail.first));
mThumbnailReply = mNam.get(request);
connect(mThumbnailReply, &QNetworkReply::finished,
this, &AmbienceManager::onSaveThumbnailFinished);
mThumbnail = new QFile;
mThumbnail->setFileName(mCacheLocation + "/" + thumbnail.second);
mThumbnail->open(QIODevice::WriteOnly);
}
void AmbienceManager::onSaveThumbnailFinished()
{
disconnect(mThumbnailReply, &QNetworkReply::finished,
this, &AmbienceManager::onSaveThumbnailFinished);
if (!mThumbnailReply->error()) // TODO: handle error case
{
QImage* fullSizeImage = new QImage;
fullSizeImage->loadFromData(mThumbnailReply->readAll());
QImage thumbnailImage(fullSizeImage->scaled(QSize(250, 740)));
delete fullSizeImage;
thumbnailImage.save(mThumbnail);
qDebug() << "saved: " << mThumbnail->fileName();
mThumbnail->close();
QFileInfo info(mThumbnail->fileName());
delete mThumbnail;
mThumbnail = 0;
emit saveThumbnailSucceeded(info.fileName());
}
mThumbnailReply->deleteLater();
mThumbnailReply = 0;
if (!mThumbnailQueue.isEmpty())
{
saveNextThumbnail();
}
}
void AmbienceManager::saveFullImage(QUrl fileUrl, QString name)
{
QNetworkRequest request;
request.setUrl(QUrl(fileUrl));
mFullImageReply = mNam.get(request);
connect(mFullImageReply, &QNetworkReply::finished,
this, &AmbienceManager::onSaveFullImageFinished);
mFullImage = new QFile;
mFullImage->setFileName(mCacheLocation + "/" + "ambience-" + name);
mFullImage->open(QIODevice::WriteOnly);
}
void AmbienceManager::onSaveFullImageFinished()
{
disconnect(mFullImageReply, &QNetworkReply::finished,
this, &AmbienceManager::onSaveFullImageFinished);
if (!mFullImageReply->error()) // TODO: handle error case
{
qDebug() << "no error, saving file";
mFullImage->write(mFullImageReply->readAll());
mFullImage->close();
emit saveFullImageSucceeded(mFullImage->fileName());
delete mFullImage;
mFullImage = 0;
}
mFullImageReply->deleteLater();
mFullImageReply = 0;
}