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/* ============================================================
*
* This file is a part of the rekonq project
*
* Copyright (C) 2009 Nokia Corporation <qt-info@nokia.com>
* Copyright (C) 2009 by Andrea Diamantini <adjam7 at gmail dot com>
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ============================================================ */
// Self Includes
#include "websnap.h"
#include "websnap.moc"
// KDE Includes
#include <KDebug>
#include <KStandardDirs>
// Qt Includes
#include <QSize>
#include <QWebFrame>
#include <QWebSettings>
#include <QPainter>
#include <QTimer>
#include <QFile>
WebSnap::WebSnap(const QUrl &url)
: QObject()
{
m_url = url;
// this to not register websnap history
m_page.settings()->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
// this to not let this page open other windows
m_page.settings()->setAttribute(QWebSettings::PluginsEnabled, false);
m_page.settings()->setAttribute(QWebSettings::JavascriptEnabled, false);
connect(&m_page, SIGNAL(loadFinished(bool)), this, SLOT(saveResult(bool)));
QTimer::singleShot(0, this, SLOT(load()));
}
WebSnap::~WebSnap()
{
}
void WebSnap::load()
{
m_page.mainFrame()->load(m_url);
}
QPixmap WebSnap::renderPreview(const QWebPage &page,int w, int h)
{
// prepare page
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff); // Why it doesn't work with one setScrollBarPolicy?
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff); // bug in qtwebkit ?
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
// find the best size
QSize size;
int width = page.mainFrame()->contentsSize().width();
if (width < 640) width = 640;
size = QSize(width,width*((0.0+h)/w));
page.setViewportSize(size);
// create the page image
QImage pageImage = QImage(size, QImage::Format_ARGB32_Premultiplied);
pageImage.fill(Qt::transparent);
// render it
QPainter p(&pageImage);
page.mainFrame()->render(&p);
p.end();
pageImage = pageImage.scaled(w, h, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation);
// restore page settings
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAsNeeded);
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAsNeeded);
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAsNeeded);
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAsNeeded);
return QPixmap::fromImage(pageImage);
}
void WebSnap::savePreview(QPixmap pm, KUrl url)
{
kDebug() << "saving preview";
QFile::remove(fileForUrl(url).toLocalFile());
pm.save(fileForUrl(url).toLocalFile());
}
KUrl WebSnap::fileForUrl(KUrl url)
{
QString filePath =
KStandardDirs::locateLocal("cache", QString("thumbs/") + WebSnap::guessNameFromUrl(url) + ".png", true);
return KUrl(filePath);
}
void WebSnap::SetData(QVariant data)
{
m_data = data;
}
QVariant& WebSnap::data()
{
return m_data;
}
QString WebSnap::guessNameFromUrl(QUrl url)
{
QString name = url.toString( QUrl::RemoveScheme | QUrl::RemoveUserInfo | QUrl::StripTrailingSlash );
// TODO learn Regular Expressions :)
// and implement something better here..
name.remove('/');
name.remove('&');
name.remove('.');
name.remove('-');
name.remove('_');
name.remove('?');
name.remove('=');
name.remove('+');
return name;
}
void WebSnap::saveResult(bool ok)
{
// crude error-checking
if (!ok)
{
kDebug() << "Error loading site..";
m_snapTitle = "Error...";
m_image = QPixmap();
}
else
{
m_image = renderPreview(m_page, WIDTH, HEIGHT);
}
QFile::remove(fileForUrl(m_url).toLocalFile());
m_image.save(fileForUrl(m_url).toLocalFile());
kDebug() << "finished";
emit finished();
}
QString WebSnap::snapTitle()
{
return m_page.mainFrame()->title();
}
QUrl WebSnap::snapUrl()
{
return m_url;
}
QPixmap WebSnap::previewImage()
{
return m_image;
}
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