<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>addtorrentdialog.cpp Example File | Qt Network 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtnetwork-index.html">Qt Network</a></td><td ><a href="qtnetwork-torrent-example.html">Torrent Example</a></td><td >addtorrentdialog.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtnetwork-index.html">Qt 5.12.2 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">addtorrentdialog.cpp Example File</h1> <span class="subtitle">torrent/addtorrentdialog.cpp</span> <!-- $$$torrent/addtorrentdialog.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "addtorrentdialog.h"</span> <span class="preprocessor">#include "metainfo.h"</span> <span class="preprocessor">#include <QFile></span> <span class="preprocessor">#include <QFileDialog></span> <span class="preprocessor">#include <QLineEdit></span> <span class="preprocessor">#include <QMetaObject></span> <span class="keyword">static</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> stringNumber(<span class="type"><a href="../qtcore/qtglobal.html#qint64-typedef">qint64</a></span> number) { <span class="keyword">if</span> (number <span class="operator">></span> (<span class="number">1024</span> <span class="operator">*</span> <span class="number">1024</span> <span class="operator">*</span> <span class="number">1024</span>)) <span class="keyword">return</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%.2fGB"</span><span class="operator">,</span> number <span class="operator">/</span> (<span class="number">1024.0</span> <span class="operator">*</span> <span class="number">1024.0</span> <span class="operator">*</span> <span class="number">1024.0</span>)); <span class="keyword">else</span> <span class="keyword">if</span> (number <span class="operator">></span> (<span class="number">1024</span> <span class="operator">*</span> <span class="number">1024</span>)) <span class="keyword">return</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%.2fMB"</span><span class="operator">,</span> number <span class="operator">/</span> (<span class="number">1024.0</span> <span class="operator">*</span> <span class="number">1024.0</span>)); <span class="keyword">else</span> <span class="keyword">if</span> (number <span class="operator">></span> (<span class="number">1024</span>)) <span class="keyword">return</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%.2fKB"</span><span class="operator">,</span> number <span class="operator">/</span> (<span class="number">1024.0</span>)); <span class="keyword">else</span> <span class="keyword">return</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%d bytes"</span><span class="operator">,</span> <span class="type">int</span>(number)); } AddTorrentDialog<span class="operator">::</span>AddTorrentDialog(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QDialog</span>(parent<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Sheet) { ui<span class="operator">.</span>setupUi(<span class="keyword">this</span>); connect(ui<span class="operator">.</span>browseTorrents<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(selectTorrent())); connect(ui<span class="operator">.</span>browseDestination<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(selectDestination())); connect(ui<span class="operator">.</span>torrentFile<span class="operator">,</span> SIGNAL(textChanged(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setTorrent(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))); ui<span class="operator">.</span>destinationFolder<span class="operator">-</span><span class="operator">></span>setText(destinationDirectory <span class="operator">=</span> <span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>current()<span class="operator">.</span>path()); ui<span class="operator">.</span>torrentFile<span class="operator">-</span><span class="operator">></span>setFocus(); } <span class="type">void</span> AddTorrentDialog<span class="operator">::</span>selectTorrent() { <span class="type"><a href="../qtcore/qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type">QFileDialog</span><span class="operator">::</span>getOpenFileName(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Choose a torrent file"</span>)<span class="operator">,</span> lastDirectory<span class="operator">,</span> tr(<span class="string">"Torrents (*.torrent);; All files (*.*)"</span>)); <span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; lastDirectory <span class="operator">=</span> <span class="type"><a href="../qtcore/qfileinfo.html">QFileInfo</a></span>(fileName)<span class="operator">.</span>absolutePath(); setTorrent(fileName); } <span class="type">void</span> AddTorrentDialog<span class="operator">::</span>selectDestination() { <span class="type"><a href="../qtcore/qstring.html">QString</a></span> dir <span class="operator">=</span> <span class="type">QFileDialog</span><span class="operator">::</span>getExistingDirectory(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Choose a destination directory"</span>)<span class="operator">,</span> lastDestinationDirectory); <span class="keyword">if</span> (dir<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; lastDestinationDirectory <span class="operator">=</span> destinationDirectory <span class="operator">=</span> dir; ui<span class="operator">.</span>destinationFolder<span class="operator">-</span><span class="operator">></span>setText(destinationDirectory); enableOkButton(); } <span class="type">void</span> AddTorrentDialog<span class="operator">::</span>enableOkButton() { ui<span class="operator">.</span>okButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="operator">!</span>ui<span class="operator">.</span>destinationFolder<span class="operator">-</span><span class="operator">></span>text()<span class="operator">.</span>isEmpty() <span class="operator">&</span><span class="operator">&</span> <span class="operator">!</span>ui<span class="operator">.</span>torrentFile<span class="operator">-</span><span class="operator">></span>text()<span class="operator">.</span>isEmpty()); } <span class="type">void</span> AddTorrentDialog<span class="operator">::</span>setTorrent(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>torrentFile) { <span class="keyword">if</span> (torrentFile<span class="operator">.</span>isEmpty()) { enableOkButton(); <span class="keyword">return</span>; } ui<span class="operator">.</span>torrentFile<span class="operator">-</span><span class="operator">></span>setText(torrentFile); <span class="keyword">if</span> (<span class="operator">!</span>torrentFile<span class="operator">.</span>isEmpty()) lastDirectory <span class="operator">=</span> <span class="type"><a href="../qtcore/qfileinfo.html">QFileInfo</a></span>(torrentFile)<span class="operator">.</span>absolutePath(); <span class="keyword">if</span> (lastDestinationDirectory<span class="operator">.</span>isEmpty()) lastDestinationDirectory <span class="operator">=</span> lastDirectory; MetaInfo metaInfo; <span class="type"><a href="../qtcore/qfile.html">QFile</a></span> torrent(torrentFile); <span class="keyword">if</span> (<span class="operator">!</span>torrent<span class="operator">.</span>open(<span class="type"><a href="../qtcore/qfile.html">QFile</a></span><span class="operator">::</span>ReadOnly) <span class="operator">|</span><span class="operator">|</span> <span class="operator">!</span>metaInfo<span class="operator">.</span>parse(torrent<span class="operator">.</span>readAll())) { enableOkButton(); <span class="keyword">return</span>; } ui<span class="operator">.</span>torrentFile<span class="operator">-</span><span class="operator">></span>setText(torrentFile); ui<span class="operator">.</span>announceUrl<span class="operator">-</span><span class="operator">></span>setText(metaInfo<span class="operator">.</span>announceUrl()); <span class="keyword">if</span> (metaInfo<span class="operator">.</span>comment()<span class="operator">.</span>isEmpty()) ui<span class="operator">.</span>commentLabel<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"<unknown>"</span>); <span class="keyword">else</span> ui<span class="operator">.</span>commentLabel<span class="operator">-</span><span class="operator">></span>setText(metaInfo<span class="operator">.</span>comment()); <span class="keyword">if</span> (metaInfo<span class="operator">.</span>createdBy()<span class="operator">.</span>isEmpty()) ui<span class="operator">.</span>creatorLabel<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"<unknown>"</span>); <span class="keyword">else</span> ui<span class="operator">.</span>creatorLabel<span class="operator">-</span><span class="operator">></span>setText(metaInfo<span class="operator">.</span>createdBy()); ui<span class="operator">.</span>sizeLabel<span class="operator">-</span><span class="operator">></span>setText(stringNumber(metaInfo<span class="operator">.</span>totalSize())); <span class="keyword">if</span> (metaInfo<span class="operator">.</span>fileForm() <span class="operator">=</span><span class="operator">=</span> MetaInfo<span class="operator">::</span>SingleFileForm) { ui<span class="operator">.</span>torrentContents<span class="operator">-</span><span class="operator">></span>setHtml(metaInfo<span class="operator">.</span>singleFile()<span class="operator">.</span>name); } <span class="keyword">else</span> { <span class="type"><a href="../qtcore/qstring.html">QString</a></span> html; foreach (MetaInfoMultiFile file<span class="operator">,</span> metaInfo<span class="operator">.</span>multiFiles()) { <span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> metaInfo<span class="operator">.</span>name(); <span class="keyword">if</span> (<span class="operator">!</span>name<span class="operator">.</span>isEmpty()) { html <span class="operator">+</span><span class="operator">=</span> name; <span class="keyword">if</span> (<span class="operator">!</span>name<span class="operator">.</span>endsWith(<span class="char">'/'</span>)) html <span class="operator">+</span><span class="operator">=</span> <span class="char">'/'</span>; } html <span class="operator">+</span><span class="operator">=</span> file<span class="operator">.</span>path <span class="operator">+</span> <span class="string">"<br>"</span>; } ui<span class="operator">.</span>torrentContents<span class="operator">-</span><span class="operator">></span>setHtml(html); } <span class="type"><a href="../qtcore/qfileinfo.html">QFileInfo</a></span> info(torrentFile); ui<span class="operator">.</span>destinationFolder<span class="operator">-</span><span class="operator">></span>setText(info<span class="operator">.</span>absolutePath()); enableOkButton(); } <span class="type"><a href="../qtcore/qstring.html">QString</a></span> AddTorrentDialog<span class="operator">::</span>torrentFileName() <span class="keyword">const</span> { <span class="keyword">return</span> ui<span class="operator">.</span>torrentFile<span class="operator">-</span><span class="operator">></span>text(); } <span class="type"><a href="../qtcore/qstring.html">QString</a></span> AddTorrentDialog<span class="operator">::</span>destinationFolder() <span class="keyword">const</span> { <span class="keyword">return</span> ui<span class="operator">.</span>destinationFolder<span class="operator">-</span><span class="operator">></span>text(); } </pre> </div> <!-- @@@torrent/addtorrentdialog.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>