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     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

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     7 ** This file is part of the examples of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include "framecapture.h"

    43 

    44 #include <iostream>

    45 #include <QtWebKit>

    46 

    47 FrameCapture::FrameCapture(): QObject(), m_percent(0)

    48 {

    49     connect(&m_page, SIGNAL(loadProgress(int)), this, SLOT(printProgress(int)));

    50     connect(&m_page, SIGNAL(loadFinished(bool)), this, SLOT(saveResult(bool)));

    51 }

    52 

    53 void FrameCapture::load(const QUrl &url, const QString &outputFileName)

    54 {

    55     std::cout << "Loading " << qPrintable(url.toString()) << std::endl;

    56     m_percent = 0;

    57     int index = outputFileName.lastIndexOf('.');

    58     m_fileName = (index == -1) ? outputFileName + ".png" : outputFileName;

    59     m_page.mainFrame()->load(url);

    60     m_page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);

    61     m_page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);

    62     m_page.setViewportSize(QSize(1024, 768));

    63 }

    64 

    65 void FrameCapture::printProgress(int percent)

    66 {

    67     if (m_percent >= percent)

    68         return;

    69 

    70     while (m_percent++ < percent)

    71         std::cout << "#" << std::flush;

    72 }

    73 

    74 void FrameCapture::saveResult(bool ok)

    75 {

    76     std::cout << std::endl;

    77 

    78     // crude error-checking

    79     if (!ok) {

    80         std::cerr << "Failed loading " << qPrintable(m_page.mainFrame()->url().toString()) << std::endl;

    81         emit finished();

    82         return;

    83     }

    84 

    85     // save each frame in different image files

    86     saveFrame(m_page.mainFrame());

    87 

    88     emit finished();

    89 }

    90 

    91 void FrameCapture::saveFrame(QWebFrame *frame)

    92 {

    93     static int frameCounter = 0;

    94 

    95     QString fileName(m_fileName);

    96     if (frameCounter) {

    97         int index = m_fileName.lastIndexOf('.');

    98         fileName = fileName.insert(index, "_frame" + QString::number(frameCounter));

    99     }

   100 

   101     QImage image(frame->contentsSize(), QImage::Format_ARGB32_Premultiplied);

   102     image.fill(Qt::transparent);

   103 

   104     QPainter painter(&image);

   105     painter.setRenderHint(QPainter::Antialiasing, true);

   106     painter.setRenderHint(QPainter::TextAntialiasing, true);

   107     painter.setRenderHint(QPainter::SmoothPixmapTransform, true);

   108     frame->documentElement().render(&painter);

   109     painter.end();

   110 

   111     image.save(fileName);

   112 

   113     ++frameCounter;

   114     foreach(QWebFrame *childFrame, frame->childFrames())

   115         saveFrame(childFrame);

   116 }

   117