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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "framecapture.h"
#include <iostream>
FrameCapture::FrameCapture(): QObject(), m_percent(0)
{
connect(&m_page, SIGNAL(loadProgress(int)), this, SLOT(printProgress(int)));
connect(&m_page, SIGNAL(loadFinished(bool)), this, SLOT(saveResult(bool)));
}
void FrameCapture::load(const QUrl &url, const QString &outputFileName)
{
std::cout << "Loading " << qPrintable(url.toString()) << std::endl;
m_percent = 0;
int index = outputFileName.lastIndexOf('.');
m_fileName = (index == -1) ? outputFileName + ".png" : outputFileName;
m_page.mainFrame()->load(url);
m_page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
m_page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
m_page.setViewportSize(QSize(1024, 768));
}
void FrameCapture::printProgress(int percent)
{
if (m_percent >= percent)
return;
while (m_percent++ < percent)
std::cout << "#" << std::flush;
}
void FrameCapture::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;
}
// save each frame in different image files
saveFrame(m_page.mainFrame());
emit finished();
}
void FrameCapture::saveFrame(QWebFrame *frame)
{
static int frameCounter = 0;
QString fileName(m_fileName);
if (frameCounter) {
int index = m_fileName.lastIndexOf('.');
fileName = fileName.insert(index, "_frame" + QString::number(frameCounter));
}
QImage image(frame->contentsSize(), QImage::Format_ARGB32_Premultiplied);
image.fill(Qt::transparent);
QPainter painter(&image);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setRenderHint(QPainter::TextAntialiasing, true);
painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
frame->documentElement().render(&painter);
painter.end();
image.save(fileName);
++frameCounter;
foreach(QWebFrame *childFrame, frame->childFrames())
saveFrame(childFrame);
}
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