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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the Graphics Dojo project on Qt Labs.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 or 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include <iostream>
#include <QtGui>
#include <QtWebKit>
class WebCapture : public QObject
{
Q_OBJECT
public:
QImage image;
WebCapture();
void load(const QUrl &url, int zoom, const QString &outputFileName, int width);
signals:
void finished();
private slots:
void showProgress(int percent);
void saveResult(bool ok);
private:
QWebPage m_page;
QString m_fileName;
int m_zoom;
int m_percent;
};
WebCapture::WebCapture(): QObject(), m_zoom(100), m_percent(0)
{
connect(&m_page, SIGNAL(loadProgress(int)), this, SLOT(showProgress(int)));
connect(&m_page, SIGNAL(loadFinished(bool)), this, SLOT(saveResult(bool)));
}
void WebCapture::load(const QUrl &url, int zoom, const QString &outputFileName, int width)
{
std::cout << "Loading " << qPrintable(url.toString()) << std::endl;
m_zoom = zoom;
m_percent = 0;
m_fileName = outputFileName;
image = QImage();
m_page.mainFrame()->load(url);
m_page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
m_page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
qreal factor = static_cast<qreal>(m_zoom) / 100.0;
#if QT_VERSION < 0x040500
m_page.setViewportSize(QSize(width, 3 * width / 4) / factor);
#else
m_page.mainFrame()->setZoomFactor(factor);
m_page.setViewportSize(QSize(width, 3 * width / 4));
#endif
}
void WebCapture::showProgress(int percent)
{
if (m_percent >= percent)
return;
while (m_percent++ < percent)
std::cout << "#" << std::flush;
}
void WebCapture::saveResult(bool ok)
{
std::cout << std::endl;
// crude error-checking
if (!ok) {
std::cerr << "Failed loading " << qPrintable(m_page.mainFrame()->url().toString()) << std::endl;
emit finished();
return;
}
// create the image for the buffer
QSize size = m_page.mainFrame()->contentsSize();
image = QImage(size, QImage::Format_ARGB32_Premultiplied);
image.fill(Qt::transparent);
// render the web page
QPainter p(&image);
p.setRenderHint(QPainter::Antialiasing, true);
p.setRenderHint(QPainter::TextAntialiasing, true);
p.setRenderHint(QPainter::SmoothPixmapTransform, true);
m_page.setViewportSize(m_page.mainFrame()->contentsSize());
m_page.mainFrame()->render(&p);
p.end();
#if QT_VERSION < 0x040500
// scale, since we don't have full page zoom
qreal factor = static_cast<qreal>(m_zoom) / 100.0;
image = image.scaled(size * factor, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
#endif
image.save(m_fileName);
emit finished();
}
// shamelessly copied from Qt Demo Browser
static QUrl guessUrlFromString(const QString &string)
{
QString urlStr = string.trimmed();
QRegExp test(QLatin1String("^[a-zA-Z]+\\:.*"));
// Check if it looks like a qualified URL. Try parsing it and see.
bool hasSchema = test.exactMatch(urlStr);
if (hasSchema) {
QUrl url(urlStr, QUrl::TolerantMode);
if (url.isValid())
return url;
}
// Might be a file.
if (QFile::exists(urlStr))
return QUrl::fromLocalFile(urlStr);
// Might be a shorturl - try to detect the schema.
if (!hasSchema) {
int dotIndex = urlStr.indexOf(QLatin1Char('.'));
if (dotIndex != -1) {
QString prefix = urlStr.left(dotIndex).toLower();
QString schema = (prefix == QLatin1String("ftp")) ? prefix : QLatin1String("http");
QUrl url(schema + QLatin1String("://") + urlStr, QUrl::TolerantMode);
if (url.isValid())
return url;
}
}
// Fall back to QUrl's own tolerant parser.
return QUrl(string, QUrl::TolerantMode);
}
#include "webcapture.moc"
int main(int argc, char * argv[])
{
if ((argc < 4) || (argc > 5)) {
std::cout << "Capture a web page and save it as an image" << std::endl << std::endl;
std::cout << " webcapture url zoom outputfile [viewport width]" << std::endl << std::endl;
std::cout << "Notes: " << std::endl;
std::cout << " 'zoom' specifies the zoom factor in percent, default is 100%" << std::endl;
std::cout << " 'viewport width' defaults to 1024 (pixels)" << std::endl;
std::cout << std::endl;
std::cout << "Examples: " << std::endl;
std::cout << " webcapture www.trolltech.com 50 trolltech.png 800" << std::endl;
std::cout << " webcapture www.nokia.com 25 nokia.png" << std::endl;
std::cout << std::endl;
return 0;
}
QUrl url = guessUrlFromString(QString::fromLatin1(argv[1]));
int zoom = qMax(10, QString::fromLatin1(argv[2]).toInt());
QString fileName = QString::fromLatin1(argv[3]);
int width = (argc == 5) ? QString::fromLatin1(argv[4]).toInt() : 1024;
QApplication a(argc, argv);
WebCapture capture;
QObject::connect(&capture, SIGNAL(finished()), QApplication::instance(), SLOT(quit()));
capture.load(url, zoom, fileName, width);
return a.exec();
}
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