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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
/*!
\example webenginewidgets/html2pdf
\title WebEngine Widgets Html2Pdf Example
\ingroup webengine-widgetexamples
\brief Converts web pages to PDF documents using \QWE.
\image html2pdf-example.png
\e {Html2Pdf} demonstrates how to use \QWE to implement a
command-line application for converting web pages into PDF documents.
\include examples-run.qdocinc
\section1 The Conversion Process
In order to convert a web page into a PDF document we need to:
\list 1
\li Create a \l QWebEngineView.
\li Tell the \l QWebEngineView to begin loading the target URL and wait for it to finish.
\li Tell the \l QWebEngineView to begin converting the loaded page into a PDF file and again wait for it to finish.
\li Once the conversion is finished, exit the program.
\endlist
This process is encapsulated in the \e {Html2PdfConverter} class:
\quotefromfile webenginewidgets/html2pdf/html2pdf.cpp
\skipto #include
\printuntil Html2PdfConverter
\printuntil /^\};/
In the constructor we create the \l QWebEngineView and connect to its \l
QWebEngineView::loadFinished and \l QWebEngineView::pdfPrintingFinished
signals:
\skipto Html2PdfConverter::Html2PdfConverter
\printuntil /^\}/
The \c run() method will trigger the conversion process by asking \l
QWebEnginePage to start loading the target URL. We then enter the main event
loop:
\skipto Html2PdfConverter::run
\printuntil /^\}/
After the loading is finished we begin PDF generation. We ask the \l
QWebEnginePage::printToPdf method to write the output directly to disk:
\skipto Html2PdfConverter::loadFinished
\printuntil /^\}/
Once we receive the signal that the PDF conversion has finished, all that
remains is to report potential errors and exit the program:
\skipto Html2PdfConverter::pdfPrintingFinished
\printuntil /^\}/
\section1 The Main Function
Our \c main function is responsible for setting up a \l QApplication and
parsing command line arguments:
\skipto int main
\printuntil /^\}/
Note that to use \QWE Widgets we need to create a \l QApplication
and not a \l QCoreApplication, even though this is a command line
application.
*/
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