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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/>.
*
* ============================================================ */
#include "websnap.h"
#include "websnap.moc"
#include <KDebug>
#include <KStandardDirs>
#include <QSize>
#include <QWebFrame>
#include <QWebSettings>
#include <QPainter>
#include <QTimer>
#include <QFile>
#define WIDTH 200
#define HEIGHT 150
WebSnap::WebSnap(const QString &url, const QString &pos)
: QObject()
{
m_url = url;
m_pos = pos;
// this to not register websnap history
m_page.settings()->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
connect(&m_page, SIGNAL(loadFinished(bool)), this, SLOT(saveResult(bool)));
QTimer::singleShot(0, this, SLOT(load()));
}
void WebSnap::load()
{
m_page.mainFrame()->load( QUrl(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 ? bug in qtwebkit ?
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
// find the best size
QSize size;
if (page.viewportSize().width() && page.viewportSize().height())
{
size = page.viewportSize();
}
else
{
int width = page.mainFrame()->contentsSize().width();
if (width < 640) width = 640;
size = QSize(width,width*((0.0+h)/w));
page.setViewportSize(size);
}
// create the target surface
QPixmap image = QPixmap(size);
image.fill(Qt::transparent);
// render
QPainter p(&image);
page.mainFrame()->render(&p);
p.end();
image = image.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 image;
}
void WebSnap::saveResult(bool ok)
{
// crude error-checking
if (!ok)
{
kDebug() << "Error loading site..";
return;
}
QString path = KStandardDirs::locateLocal("cache", QString("thumbs/rek") + m_pos + ".png", true);
m_image = renderPreview(m_page, WIDTH, HEIGHT);
if(m_image.save(path))
{
emit finished();
}
}
QPixmap WebSnap::previewImage()
{
return m_image;
}
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