mirror of
https://github.com/qbittorrent/qBittorrent.git
synced 2025-01-05 14:47:25 +03:00
92 lines
3 KiB
C++
92 lines
3 KiB
C++
#include "htmlbrowser.h"
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#include <QDebug>
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#include <QNetworkRequest>
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#include <QNetworkReply>
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#include <QNetworkDiskCache>
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#include <QStyle>
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#include <QApplication>
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#include <QDir>
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#include <QDateTime>
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#include <QScrollBar>
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#include "fs_utils.h"
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HtmlBrowser::HtmlBrowser(QWidget* parent)
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: QTextBrowser(parent)
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{
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m_netManager = new QNetworkAccessManager(this);
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m_diskCache = new QNetworkDiskCache(this);
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m_diskCache->setCacheDirectory(QDir::cleanPath(fsutils::cacheLocation() + "/browser"));
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m_diskCache->setMaximumCacheSize(50 * 1024 * 1024);
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qDebug() << "HtmlBrowser cache path:" << m_diskCache->cacheDirectory() << " max size:" << m_diskCache->maximumCacheSize() / 1024 / 1024 << "MB";
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m_netManager->setCache(m_diskCache);
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connect(m_netManager, SIGNAL(finished(QNetworkReply *)), this, SLOT(resourceLoaded(QNetworkReply*)));
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}
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HtmlBrowser::~HtmlBrowser()
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{
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}
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QVariant HtmlBrowser::loadResource(int type, const QUrl &name)
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{
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if(type == QTextDocument::ImageResource) {
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QUrl url(name);
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if(url.scheme().isEmpty())
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url.setScheme("http");
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QIODevice *dev = m_diskCache->data(url);
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if(dev != 0) {
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qDebug() << "HtmlBrowser::loadResource() cache " << url.toString();
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QByteArray res = dev->readAll();
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delete dev;
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return res;
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}
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if(!m_activeRequests.contains(url)) {
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m_activeRequests.insert(url, true);
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qDebug() << "HtmlBrowser::loadResource() get " << url.toString();
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QNetworkRequest req(url);
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req.setAttribute(QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferCache);
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m_netManager->get(req);
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}
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return QVariant();
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}
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return QTextBrowser::loadResource(type, name);
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}
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void HtmlBrowser::resourceLoaded(QNetworkReply *reply)
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{
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m_activeRequests.remove(reply->request().url());
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if(reply->error() == QNetworkReply::NoError && reply->size() > 0) {
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qDebug() << "HtmlBrowser::resourceLoaded() save " << reply->request().url().toString();
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} else {
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// If resource failed to load, replace it with warning icon and store it in cache for 1 day.
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// Otherwise HTMLBrowser will keep trying to download it every time article is displayed,
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// since it's not possible to cache error responses.
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QNetworkCacheMetaData metaData;
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QNetworkCacheMetaData::AttributesMap atts;
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metaData.setUrl(reply->request().url());
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metaData.setSaveToDisk(true);
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atts[QNetworkRequest::HttpStatusCodeAttribute] = 200;
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atts[QNetworkRequest::HttpReasonPhraseAttribute] = "Ok";
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metaData.setAttributes(atts);
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metaData.setLastModified(QDateTime::currentDateTime());
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metaData.setExpirationDate(QDateTime::currentDateTime().addDays(1));
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QIODevice *dev = m_diskCache->prepare(metaData);
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if(!dev)
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return;
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QApplication::style()->standardIcon(QStyle::SP_MessageBoxWarning).pixmap(32, 32).save(dev, "PNG");
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m_diskCache->insert(dev);
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}
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// Refresh the document display and keep scrollbars where they are
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int sx = horizontalScrollBar()->value();
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int sy = verticalScrollBar()->value();
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document()->setHtml(document()->toHtml());
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horizontalScrollBar()->setValue(sx);
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verticalScrollBar()->setValue(sy);
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}
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