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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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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

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    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 }

    63 

    64 void FrameCapture::printProgress(int percent)

    65 {

    66     if (m_percent >= percent)

    67         return;

    68 

    69     while (m_percent++ < percent)

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

    71 }

    72 

    73 void FrameCapture::saveResult(bool ok)

    74 {

    75     std::cout << std::endl;

    76 

    77     // crude error-checking

    78     if (!ok) {

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

    80         emit finished();

    81         return;

    82     }

    83 

    84     // save each internal frame in different image files

    85     int frameCounter = 0;

    86     foreach(QWebFrame *frame, m_page.mainFrame()->childFrames()) {

    87         QString fileName(m_fileName);

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

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

    90 

    91         frame->setClipRenderToViewport(false);

    92 

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

    94         image.fill(Qt::transparent);

    95 

    96         saveFrame(frame, image, fileName);

    97     }

    98 

    99     // save the main frame

   100     m_page.setViewportSize(m_page.mainFrame()->contentsSize());

   101     QImage image(m_page.mainFrame()->contentsSize(), QImage::Format_ARGB32_Premultiplied);

   102     image.fill(Qt::transparent);

   103     saveFrame(m_page.mainFrame(), image, m_fileName);

   104 

   105     emit finished();

   106 }

   107 

   108 void FrameCapture::saveFrame(QWebFrame *frame, QImage image, QString fileName)

   109 {

   110     QPainter painter(&image);

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

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

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

   114 

   115     frame->render(&painter);

   116 

   117     painter.end();

   118 

   119     image.save(fileName);

   120 }

   121