<?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>mainwindow.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 >mainwindow.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">mainwindow.cpp Example File</h1> <span class="subtitle">torrent/mainwindow.cpp</span> <!-- $$$torrent/mainwindow.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 <QtWidgets></span> <span class="preprocessor">#include "addtorrentdialog.h"</span> <span class="preprocessor">#include "mainwindow.h"</span> <span class="preprocessor">#include "ratecontroller.h"</span> <span class="preprocessor">#include "torrentclient.h"</span> <span class="comment">// TorrentView extends QTreeWidget to allow drag and drop.</span> <span class="keyword">class</span> TorrentView : <span class="keyword">public</span> <span class="type">QTreeWidget</span> { Q_OBJECT <span class="keyword">public</span>: TorrentView(<span class="type">QWidget</span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>); <span class="preprocessor">#if QT_CONFIG(draganddrop)</span> <span class="keyword">signals</span>: <span class="type">void</span> fileDropped(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>fileName); <span class="keyword">protected</span>: <span class="type">void</span> dragMoveEvent(<span class="type"><a href="../qtgui/qdragmoveevent.html">QDragMoveEvent</a></span> <span class="operator">*</span>event) override; <span class="type">void</span> dropEvent(<span class="type"><a href="../qtgui/qdropevent.html">QDropEvent</a></span> <span class="operator">*</span>event) override; <span class="preprocessor">#endif</span> }; <span class="comment">// TorrentViewDelegate is used to draw the progress bars.</span> <span class="keyword">class</span> TorrentViewDelegate : <span class="keyword">public</span> <span class="type">QItemDelegate</span> { Q_OBJECT <span class="keyword">public</span>: <span class="keyword">inline</span> TorrentViewDelegate(MainWindow <span class="operator">*</span>mainWindow) : <span class="type">QItemDelegate</span>(mainWindow) {} <span class="type">void</span> paint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QStyleOptionViewItem</span> <span class="operator">&</span>option<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> <span class="operator">&</span>index ) <span class="keyword">const</span> override { <span class="keyword">if</span> (index<span class="operator">.</span>column() <span class="operator">!</span><span class="operator">=</span> <span class="number">2</span>) { <span class="type">QItemDelegate</span><span class="operator">::</span>paint(painter<span class="operator">,</span> option<span class="operator">,</span> index); <span class="keyword">return</span>; } <span class="comment">// Set up a QStyleOptionProgressBar to precisely mimic the</span> <span class="comment">// environment of a progress bar.</span> <span class="type">QStyleOptionProgressBar</span> progressBarOption; progressBarOption<span class="operator">.</span>state <span class="operator">=</span> <span class="type">QStyle</span><span class="operator">::</span>State_Enabled; progressBarOption<span class="operator">.</span>direction <span class="operator">=</span> <span class="type">QApplication</span><span class="operator">::</span>layoutDirection(); progressBarOption<span class="operator">.</span>rect <span class="operator">=</span> option<span class="operator">.</span>rect; progressBarOption<span class="operator">.</span>fontMetrics <span class="operator">=</span> <span class="type">QApplication</span><span class="operator">::</span>fontMetrics(); progressBarOption<span class="operator">.</span>minimum <span class="operator">=</span> <span class="number">0</span>; progressBarOption<span class="operator">.</span>maximum <span class="operator">=</span> <span class="number">100</span>; progressBarOption<span class="operator">.</span>textAlignment <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignCenter; progressBarOption<span class="operator">.</span>textVisible <span class="operator">=</span> <span class="keyword">true</span>; <span class="comment">// Set the progress and text values of the style option.</span> <span class="type">int</span> progress <span class="operator">=</span> qobject_cast<span class="operator"><</span>MainWindow <span class="operator">*</span><span class="operator">></span>(parent())<span class="operator">-</span><span class="operator">></span>clientForRow(index<span class="operator">.</span>row())<span class="operator">-</span><span class="operator">></span>progress(); progressBarOption<span class="operator">.</span>progress <span class="operator">=</span> progress <span class="operator"><</span> <span class="number">0</span> <span class="operator">?</span> <span class="number">0</span> : progress; progressBarOption<span class="operator">.</span>text <span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%d%%"</span><span class="operator">,</span> progressBarOption<span class="operator">.</span>progress); <span class="comment">// Draw the progress bar onto the view.</span> <span class="type">QApplication</span><span class="operator">::</span>style()<span class="operator">-</span><span class="operator">></span>drawControl(<span class="type">QStyle</span><span class="operator">::</span>CE_ProgressBar<span class="operator">,</span> <span class="operator">&</span>progressBarOption<span class="operator">,</span> painter); } }; MainWindow<span class="operator">::</span>MainWindow(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QMainWindow</span>(parent)<span class="operator">,</span> quitDialog(<span class="number">0</span>)<span class="operator">,</span> saveChanges(<span class="keyword">false</span>) { <span class="comment">// Initialize some static strings</span> <span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> headers; headers <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Torrent"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Peers/Seeds"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Progress"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Down rate"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Up rate"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Status"</span>); <span class="comment">// Main torrent list</span> torrentView <span class="operator">=</span> <span class="keyword">new</span> TorrentView(<span class="keyword">this</span>); torrentView<span class="operator">-</span><span class="operator">></span>setItemDelegate(<span class="keyword">new</span> TorrentViewDelegate(<span class="keyword">this</span>)); torrentView<span class="operator">-</span><span class="operator">></span>setHeaderLabels(headers); torrentView<span class="operator">-</span><span class="operator">></span>setSelectionBehavior(<span class="type">QAbstractItemView</span><span class="operator">::</span>SelectRows); torrentView<span class="operator">-</span><span class="operator">></span>setAlternatingRowColors(<span class="keyword">true</span>); torrentView<span class="operator">-</span><span class="operator">></span>setRootIsDecorated(<span class="keyword">false</span>); setCentralWidget(torrentView); <span class="comment">// Set header resize modes and initial section sizes</span> <span class="type"><a href="../qtgui/qfontmetrics.html">QFontMetrics</a></span> fm <span class="operator">=</span> fontMetrics(); <span class="type">QHeaderView</span> <span class="operator">*</span>header <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>header(); header<span class="operator">-</span><span class="operator">></span>resizeSection(<span class="number">0</span><span class="operator">,</span> fm<span class="operator">.</span>horizontalAdvance(<span class="string">"typical-name-for-a-torrent.torrent"</span>)); header<span class="operator">-</span><span class="operator">></span>resizeSection(<span class="number">1</span><span class="operator">,</span> fm<span class="operator">.</span>horizontalAdvance(headers<span class="operator">.</span>at(<span class="number">1</span>) <span class="operator">+</span> <span class="string">" "</span>)); header<span class="operator">-</span><span class="operator">></span>resizeSection(<span class="number">2</span><span class="operator">,</span> fm<span class="operator">.</span>horizontalAdvance(headers<span class="operator">.</span>at(<span class="number">2</span>) <span class="operator">+</span> <span class="string">" "</span>)); header<span class="operator">-</span><span class="operator">></span>resizeSection(<span class="number">3</span><span class="operator">,</span> <a href="../qtcore/qtglobal.html#qMax">qMax</a>(fm<span class="operator">.</span>horizontalAdvance(headers<span class="operator">.</span>at(<span class="number">3</span>) <span class="operator">+</span> <span class="string">" "</span>)<span class="operator">,</span> fm<span class="operator">.</span>horizontalAdvance(<span class="string">" 1234.0 KB/s "</span>))); header<span class="operator">-</span><span class="operator">></span>resizeSection(<span class="number">4</span><span class="operator">,</span> <a href="../qtcore/qtglobal.html#qMax">qMax</a>(fm<span class="operator">.</span>horizontalAdvance(headers<span class="operator">.</span>at(<span class="number">4</span>) <span class="operator">+</span> <span class="string">" "</span>)<span class="operator">,</span> fm<span class="operator">.</span>horizontalAdvance(<span class="string">" 1234.0 KB/s "</span>))); header<span class="operator">-</span><span class="operator">></span>resizeSection(<span class="number">5</span><span class="operator">,</span> <a href="../qtcore/qtglobal.html#qMax">qMax</a>(fm<span class="operator">.</span>horizontalAdvance(headers<span class="operator">.</span>at(<span class="number">5</span>) <span class="operator">+</span> <span class="string">" "</span>)<span class="operator">,</span> fm<span class="operator">.</span>horizontalAdvance(tr(<span class="string">"Downloading"</span>) <span class="operator">+</span> <span class="string">" "</span>))); <span class="comment">// Create common actions</span> <span class="type">QAction</span> <span class="operator">*</span>newTorrentAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QAction</span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/icons/bottom.png"</span>)<span class="operator">,</span> tr(<span class="string">"Add &new torrent"</span>)<span class="operator">,</span> <span class="keyword">this</span>); pauseTorrentAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QAction</span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/icons/player_pause.png"</span>)<span class="operator">,</span> tr(<span class="string">"&Pause torrent"</span>)<span class="operator">,</span> <span class="keyword">this</span>); removeTorrentAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QAction</span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/icons/player_stop.png"</span>)<span class="operator">,</span> tr(<span class="string">"&Remove torrent"</span>)<span class="operator">,</span> <span class="keyword">this</span>); <span class="comment">// File menu</span> <span class="type">QMenu</span> <span class="operator">*</span>fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&File"</span>)); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(newTorrentAction); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(pauseTorrentAction); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(removeTorrentAction); fileMenu<span class="operator">-</span><span class="operator">></span>addSeparator(); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/icons/exit.png"</span>)<span class="operator">,</span> tr(<span class="string">"E&xit"</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close())); <span class="comment">// Help menu</span> <span class="type">QMenu</span> <span class="operator">*</span>helpMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Help"</span>)); helpMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"&About"</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(about())); helpMenu<span class="operator">-</span><span class="operator">></span>addAction(tr(<span class="string">"About &Qt"</span>)<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(aboutQt())); <span class="comment">// Top toolbar</span> <span class="type">QToolBar</span> <span class="operator">*</span>topBar <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QToolBar</span>(tr(<span class="string">"Tools"</span>)); addToolBar(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>TopToolBarArea<span class="operator">,</span> topBar); topBar<span class="operator">-</span><span class="operator">></span>setMovable(<span class="keyword">false</span>); topBar<span class="operator">-</span><span class="operator">></span>addAction(newTorrentAction); topBar<span class="operator">-</span><span class="operator">></span>addAction(removeTorrentAction); topBar<span class="operator">-</span><span class="operator">></span>addAction(pauseTorrentAction); topBar<span class="operator">-</span><span class="operator">></span>addSeparator(); downActionTool <span class="operator">=</span> topBar<span class="operator">-</span><span class="operator">></span>addAction(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(tr(<span class="string">":/icons/1downarrow.png"</span>))<span class="operator">,</span> tr(<span class="string">"Move down"</span>)); upActionTool <span class="operator">=</span> topBar<span class="operator">-</span><span class="operator">></span>addAction(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(tr(<span class="string">":/icons/1uparrow.png"</span>))<span class="operator">,</span> tr(<span class="string">"Move up"</span>)); <span class="comment">// Bottom toolbar</span> <span class="type">QToolBar</span> <span class="operator">*</span>bottomBar <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QToolBar</span>(tr(<span class="string">"Rate control"</span>)); addToolBar(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>BottomToolBarArea<span class="operator">,</span> bottomBar); bottomBar<span class="operator">-</span><span class="operator">></span>setMovable(<span class="keyword">false</span>); downloadLimitSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal); downloadLimitSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">1000</span>); bottomBar<span class="operator">-</span><span class="operator">></span>addWidget(<span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Max download:"</span>))); bottomBar<span class="operator">-</span><span class="operator">></span>addWidget(downloadLimitSlider); bottomBar<span class="operator">-</span><span class="operator">></span>addWidget((downloadLimitLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"0 KB/s"</span>)))); downloadLimitLabel<span class="operator">-</span><span class="operator">></span>setFixedSize(<span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(fm<span class="operator">.</span>horizontalAdvance(tr(<span class="string">"99999 KB/s"</span>))<span class="operator">,</span> fm<span class="operator">.</span>lineSpacing())); bottomBar<span class="operator">-</span><span class="operator">></span>addSeparator(); uploadLimitSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal); uploadLimitSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">1000</span>); bottomBar<span class="operator">-</span><span class="operator">></span>addWidget(<span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Max upload:"</span>))); bottomBar<span class="operator">-</span><span class="operator">></span>addWidget(uploadLimitSlider); bottomBar<span class="operator">-</span><span class="operator">></span>addWidget((uploadLimitLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"0 KB/s"</span>)))); uploadLimitLabel<span class="operator">-</span><span class="operator">></span>setFixedSize(<span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(fm<span class="operator">.</span>horizontalAdvance(tr(<span class="string">"99999 KB/s"</span>))<span class="operator">,</span> fm<span class="operator">.</span>lineSpacing())); <span class="preprocessor">#ifdef Q_OS_OSX</span> setUnifiedTitleAndToolBarOnMac(<span class="keyword">true</span>); <span class="preprocessor">#endif</span> <span class="comment">// Set up connections</span> connect(torrentView<span class="operator">,</span> SIGNAL(itemSelectionChanged())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setActionsEnabled())); connect(torrentView<span class="operator">,</span> SIGNAL(fileDropped(<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(acceptFileDrop(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))); connect(uploadLimitSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setUploadLimit(<span class="type">int</span>))); connect(downloadLimitSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDownloadLimit(<span class="type">int</span>))); connect(newTorrentAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(addTorrent())); connect(pauseTorrentAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(pauseTorrent())); connect(removeTorrentAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(removeTorrent())); connect(upActionTool<span class="operator">,</span> SIGNAL(triggered(bool))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(moveTorrentUp())); connect(downActionTool<span class="operator">,</span> SIGNAL(triggered(bool))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(moveTorrentDown())); <span class="comment">// Load settings and start</span> setWindowTitle(tr(<span class="string">"Torrent Client"</span>)); setActionsEnabled(); <span class="type"><a href="../qtcore/qmetaobject.html">QMetaObject</a></span><span class="operator">::</span>invokeMethod(<span class="keyword">this</span><span class="operator">,</span> <span class="string">"loadSettings"</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>QueuedConnection); } <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> MainWindow<span class="operator">::</span>sizeHint() <span class="keyword">const</span> { <span class="keyword">const</span> <span class="type">QHeaderView</span> <span class="operator">*</span>header <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>header(); <span class="comment">// Add up the sizes of all header sections. The last section is</span> <span class="comment">// stretched, so its size is relative to the size of the width;</span> <span class="comment">// instead of counting it, we count the size of its largest value.</span> <span class="type">int</span> width <span class="operator">=</span> fontMetrics()<span class="operator">.</span>horizontalAdvance(tr(<span class="string">"Downloading"</span>) <span class="operator">+</span> <span class="string">" "</span>); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> header<span class="operator">-</span><span class="operator">></span>count() <span class="operator">-</span> <span class="number">1</span>; <span class="operator">+</span><span class="operator">+</span>i) width <span class="operator">+</span><span class="operator">=</span> header<span class="operator">-</span><span class="operator">></span>sectionSize(i); <span class="keyword">return</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(width<span class="operator">,</span> <span class="type">QMainWindow</span><span class="operator">::</span>sizeHint()<span class="operator">.</span>height()) <span class="operator">.</span>expandedTo(<span class="type">QApplication</span><span class="operator">::</span>globalStrut()); } <span class="keyword">const</span> TorrentClient <span class="operator">*</span>MainWindow<span class="operator">::</span>clientForRow(<span class="type">int</span> row) <span class="keyword">const</span> { <span class="comment">// Return the client at the given row.</span> <span class="keyword">return</span> jobs<span class="operator">.</span>at(row)<span class="operator">.</span>client; } <span class="type">int</span> MainWindow<span class="operator">::</span>rowOfClient(TorrentClient <span class="operator">*</span>client) <span class="keyword">const</span> { <span class="comment">// Return the row that displays this client's status, or -1 if the</span> <span class="comment">// client is not known.</span> <span class="type">int</span> row <span class="operator">=</span> <span class="number">0</span>; foreach (Job job<span class="operator">,</span> jobs) { <span class="keyword">if</span> (job<span class="operator">.</span>client <span class="operator">=</span><span class="operator">=</span> client) <span class="keyword">return</span> row; <span class="operator">+</span><span class="operator">+</span>row; } <span class="keyword">return</span> <span class="operator">-</span><span class="number">1</span>; } <span class="type">void</span> MainWindow<span class="operator">::</span>loadSettings() { <span class="comment">// Load base settings (last working directory, upload/download limits).</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> settings(<span class="string">"QtProject"</span><span class="operator">,</span> <span class="string">"Torrent"</span>); lastDirectory <span class="operator">=</span> settings<span class="operator">.</span>value(<span class="string">"LastDirectory"</span>)<span class="operator">.</span>toString(); <span class="keyword">if</span> (lastDirectory<span class="operator">.</span>isEmpty()) lastDirectory <span class="operator">=</span> <span class="type"><a href="../qtcore/qdir.html">QDir</a></span><span class="operator">::</span>currentPath(); <span class="type">int</span> up <span class="operator">=</span> settings<span class="operator">.</span>value(<span class="string">"UploadLimit"</span>)<span class="operator">.</span>toInt(); <span class="type">int</span> down <span class="operator">=</span> settings<span class="operator">.</span>value(<span class="string">"DownloadLimit"</span>)<span class="operator">.</span>toInt(); uploadLimitSlider<span class="operator">-</span><span class="operator">></span>setValue(up <span class="operator">?</span> up : <span class="number">170</span>); downloadLimitSlider<span class="operator">-</span><span class="operator">></span>setValue(down <span class="operator">?</span> down : <span class="number">550</span>); <span class="comment">// Resume all previous downloads.</span> <span class="type">int</span> size <span class="operator">=</span> settings<span class="operator">.</span>beginReadArray(<span class="string">"Torrents"</span>); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> size; <span class="operator">+</span><span class="operator">+</span>i) { settings<span class="operator">.</span>setArrayIndex(i); <span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span> resumeState <span class="operator">=</span> settings<span class="operator">.</span>value(<span class="string">"resumeState"</span>)<span class="operator">.</span>toByteArray(); <span class="type"><a href="../qtcore/qstring.html">QString</a></span> fileName <span class="operator">=</span> settings<span class="operator">.</span>value(<span class="string">"sourceFileName"</span>)<span class="operator">.</span>toString(); <span class="type"><a href="../qtcore/qstring.html">QString</a></span> dest <span class="operator">=</span> settings<span class="operator">.</span>value(<span class="string">"destinationFolder"</span>)<span class="operator">.</span>toString(); <span class="keyword">if</span> (addTorrent(fileName<span class="operator">,</span> dest<span class="operator">,</span> resumeState)) { TorrentClient <span class="operator">*</span>client <span class="operator">=</span> jobs<span class="operator">.</span>last()<span class="operator">.</span>client; client<span class="operator">-</span><span class="operator">></span>setDownloadedBytes(settings<span class="operator">.</span>value(<span class="string">"downloadedBytes"</span>)<span class="operator">.</span>toLongLong()); client<span class="operator">-</span><span class="operator">></span>setUploadedBytes(settings<span class="operator">.</span>value(<span class="string">"uploadedBytes"</span>)<span class="operator">.</span>toLongLong()); } } } bool MainWindow<span class="operator">::</span>addTorrent() { <span class="comment">// Show the file dialog, let the user select what torrent to start downloading.</span> <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);;"</span> <span class="string">" All files (*.*)"</span>)); <span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty()) <span class="keyword">return</span> <span class="keyword">false</span>; lastDirectory <span class="operator">=</span> <span class="type"><a href="../qtcore/qfileinfo.html">QFileInfo</a></span>(fileName)<span class="operator">.</span>absolutePath(); <span class="comment">// Show the "Add Torrent" dialog.</span> AddTorrentDialog <span class="operator">*</span>addTorrentDialog <span class="operator">=</span> <span class="keyword">new</span> AddTorrentDialog(<span class="keyword">this</span>); addTorrentDialog<span class="operator">-</span><span class="operator">></span>setTorrent(fileName); addTorrentDialog<span class="operator">-</span><span class="operator">></span>deleteLater(); <span class="keyword">if</span> (<span class="operator">!</span>addTorrentDialog<span class="operator">-</span><span class="operator">></span>exec()) <span class="keyword">return</span> <span class="keyword">false</span>; <span class="comment">// Add the torrent to our list of downloads</span> addTorrent(fileName<span class="operator">,</span> addTorrentDialog<span class="operator">-</span><span class="operator">></span>destinationFolder()); <span class="keyword">if</span> (<span class="operator">!</span>saveChanges) { saveChanges <span class="operator">=</span> <span class="keyword">true</span>; <span class="type"><a href="../qtcore/qtimer.html">QTimer</a></span><span class="operator">::</span>singleShot(<span class="number">1000</span><span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(saveSettings())); } <span class="keyword">return</span> <span class="keyword">true</span>; } <span class="type">void</span> MainWindow<span class="operator">::</span>removeTorrent() { <span class="comment">// Find the row of the current item, and find the torrent client</span> <span class="comment">// for that row.</span> <span class="type">int</span> row <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>indexOfTopLevelItem(torrentView<span class="operator">-</span><span class="operator">></span>currentItem()); TorrentClient <span class="operator">*</span>client <span class="operator">=</span> jobs<span class="operator">.</span>at(row)<span class="operator">.</span>client; <span class="comment">// Stop the client.</span> client<span class="operator">-</span><span class="operator">></span>disconnect(); connect(client<span class="operator">,</span> SIGNAL(stopped())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(torrentStopped())); client<span class="operator">-</span><span class="operator">></span>stop(); <span class="comment">// Remove the row from the view.</span> <span class="keyword">delete</span> torrentView<span class="operator">-</span><span class="operator">></span>takeTopLevelItem(row); jobs<span class="operator">.</span>removeAt(row); setActionsEnabled(); saveChanges <span class="operator">=</span> <span class="keyword">true</span>; saveSettings(); } <span class="type">void</span> MainWindow<span class="operator">::</span>torrentStopped() { <span class="comment">// Schedule the client for deletion.</span> TorrentClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>TorrentClient <span class="operator">*</span><span class="operator">></span>(sender()); client<span class="operator">-</span><span class="operator">></span>deleteLater(); <span class="comment">// If the quit dialog is shown, update its progress.</span> <span class="keyword">if</span> (quitDialog) { <span class="keyword">if</span> (<span class="operator">+</span><span class="operator">+</span>jobsStopped <span class="operator">=</span><span class="operator">=</span> jobsToStop) quitDialog<span class="operator">-</span><span class="operator">></span>close(); } } <span class="type">void</span> MainWindow<span class="operator">::</span>torrentError(TorrentClient<span class="operator">::</span>Error) { <span class="comment">// Delete the client.</span> TorrentClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>TorrentClient <span class="operator">*</span><span class="operator">></span>(sender()); <span class="type">int</span> row <span class="operator">=</span> rowOfClient(client); <span class="type"><a href="../qtcore/qstring.html">QString</a></span> fileName <span class="operator">=</span> jobs<span class="operator">.</span>at(row)<span class="operator">.</span>torrentFileName; jobs<span class="operator">.</span>removeAt(row); <span class="comment">// Display the warning.</span> <span class="type">QMessageBox</span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Error"</span>)<span class="operator">,</span> tr(<span class="string">"An error occurred while downloading %0: %1"</span>) <span class="operator">.</span>arg(fileName) <span class="operator">.</span>arg(client<span class="operator">-</span><span class="operator">></span>errorString())); <span class="keyword">delete</span> torrentView<span class="operator">-</span><span class="operator">></span>takeTopLevelItem(row); client<span class="operator">-</span><span class="operator">></span>deleteLater(); } bool MainWindow<span class="operator">::</span>addTorrent(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>fileName<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>destinationFolder<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span> <span class="operator">&</span>resumeState) { <span class="comment">// Check if the torrent is already being downloaded.</span> foreach (Job job<span class="operator">,</span> jobs) { <span class="keyword">if</span> (job<span class="operator">.</span>torrentFileName <span class="operator">=</span><span class="operator">=</span> fileName <span class="operator">&</span><span class="operator">&</span> job<span class="operator">.</span>destinationDirectory <span class="operator">=</span><span class="operator">=</span> destinationFolder) { <span class="type">QMessageBox</span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Already downloading"</span>)<span class="operator">,</span> tr(<span class="string">"The torrent file %1 is "</span> <span class="string">"already being downloaded."</span>)<span class="operator">.</span>arg(fileName)); <span class="keyword">return</span> <span class="keyword">false</span>; } } <span class="comment">// Create a new torrent client and attempt to parse the torrent data.</span> TorrentClient <span class="operator">*</span>client <span class="operator">=</span> <span class="keyword">new</span> TorrentClient(<span class="keyword">this</span>); <span class="keyword">if</span> (<span class="operator">!</span>client<span class="operator">-</span><span class="operator">></span>setTorrent(fileName)) { <span class="type">QMessageBox</span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Error"</span>)<span class="operator">,</span> tr(<span class="string">"The torrent file %1 cannot not be opened/resumed."</span>)<span class="operator">.</span>arg(fileName)); <span class="keyword">delete</span> client; <span class="keyword">return</span> <span class="keyword">false</span>; } client<span class="operator">-</span><span class="operator">></span>setDestinationFolder(destinationFolder); client<span class="operator">-</span><span class="operator">></span>setDumpedState(resumeState); <span class="comment">// Setup the client connections.</span> connect(client<span class="operator">,</span> SIGNAL(stateChanged(TorrentClient<span class="operator">::</span>State))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateState(TorrentClient<span class="operator">::</span>State))); connect(client<span class="operator">,</span> SIGNAL(peerInfoUpdated())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updatePeerInfo())); connect(client<span class="operator">,</span> SIGNAL(progressUpdated(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateProgress(<span class="type">int</span>))); connect(client<span class="operator">,</span> SIGNAL(downloadRateUpdated(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateDownloadRate(<span class="type">int</span>))); connect(client<span class="operator">,</span> SIGNAL(uploadRateUpdated(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateUploadRate(<span class="type">int</span>))); connect(client<span class="operator">,</span> SIGNAL(stopped())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(torrentStopped())); connect(client<span class="operator">,</span> SIGNAL(error(TorrentClient<span class="operator">::</span>Error))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(torrentError(TorrentClient<span class="operator">::</span>Error))); <span class="comment">// Add the client to the list of downloading jobs.</span> Job job; job<span class="operator">.</span>client <span class="operator">=</span> client; job<span class="operator">.</span>torrentFileName <span class="operator">=</span> fileName; job<span class="operator">.</span>destinationDirectory <span class="operator">=</span> destinationFolder; jobs <span class="operator"><</span><span class="operator"><</span> job; <span class="comment">// Create and add a row in the torrent view for this download.</span> <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTreeWidgetItem</span>(torrentView); <span class="type"><a href="../qtcore/qstring.html">QString</a></span> baseFileName <span class="operator">=</span> <span class="type"><a href="../qtcore/qfileinfo.html">QFileInfo</a></span>(fileName)<span class="operator">.</span>fileName(); <span class="keyword">if</span> (baseFileName<span class="operator">.</span>toLower()<span class="operator">.</span>endsWith(<span class="string">".torrent"</span>)) baseFileName<span class="operator">.</span>remove(baseFileName<span class="operator">.</span>size() <span class="operator">-</span> <span class="number">8</span>); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">0</span><span class="operator">,</span> baseFileName); item<span class="operator">-</span><span class="operator">></span>setToolTip(<span class="number">0</span><span class="operator">,</span> tr(<span class="string">"Torrent: %1<br>Destination: %2"</span>) <span class="operator">.</span>arg(baseFileName)<span class="operator">.</span>arg(destinationFolder)); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">1</span><span class="operator">,</span> tr(<span class="string">"0/0"</span>)); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">2</span><span class="operator">,</span> <span class="string">"0"</span>); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">3</span><span class="operator">,</span> <span class="string">"0.0 KB/s"</span>); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">4</span><span class="operator">,</span> <span class="string">"0.0 KB/s"</span>); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">5</span><span class="operator">,</span> tr(<span class="string">"Idle"</span>)); item<span class="operator">-</span><span class="operator">></span>setFlags(item<span class="operator">-</span><span class="operator">></span>flags() <span class="operator">&</span> <span class="operator">~</span><span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ItemIsEditable); item<span class="operator">-</span><span class="operator">></span>setTextAlignment(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter); <span class="keyword">if</span> (<span class="operator">!</span>saveChanges) { saveChanges <span class="operator">=</span> <span class="keyword">true</span>; <span class="type"><a href="../qtcore/qtimer.html">QTimer</a></span><span class="operator">::</span>singleShot(<span class="number">5000</span><span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(saveSettings())); } client<span class="operator">-</span><span class="operator">></span>start(); <span class="keyword">return</span> <span class="keyword">true</span>; } <span class="type">void</span> MainWindow<span class="operator">::</span>saveSettings() { <span class="keyword">if</span> (<span class="operator">!</span>saveChanges) <span class="keyword">return</span>; saveChanges <span class="operator">=</span> <span class="keyword">false</span>; <span class="comment">// Prepare and reset the settings</span> <span class="type"><a href="../qtcore/qsettings.html">QSettings</a></span> settings(<span class="string">"QtProject"</span><span class="operator">,</span> <span class="string">"Torrent"</span>); settings<span class="operator">.</span>clear(); settings<span class="operator">.</span>setValue(<span class="string">"LastDirectory"</span><span class="operator">,</span> lastDirectory); settings<span class="operator">.</span>setValue(<span class="string">"UploadLimit"</span><span class="operator">,</span> uploadLimitSlider<span class="operator">-</span><span class="operator">></span>value()); settings<span class="operator">.</span>setValue(<span class="string">"DownloadLimit"</span><span class="operator">,</span> downloadLimitSlider<span class="operator">-</span><span class="operator">></span>value()); <span class="comment">// Store data on all known torrents</span> settings<span class="operator">.</span>beginWriteArray(<span class="string">"Torrents"</span>); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> jobs<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { settings<span class="operator">.</span>setArrayIndex(i); settings<span class="operator">.</span>setValue(<span class="string">"sourceFileName"</span><span class="operator">,</span> jobs<span class="operator">.</span>at(i)<span class="operator">.</span>torrentFileName); settings<span class="operator">.</span>setValue(<span class="string">"destinationFolder"</span><span class="operator">,</span> jobs<span class="operator">.</span>at(i)<span class="operator">.</span>destinationDirectory); settings<span class="operator">.</span>setValue(<span class="string">"uploadedBytes"</span><span class="operator">,</span> jobs<span class="operator">.</span>at(i)<span class="operator">.</span>client<span class="operator">-</span><span class="operator">></span>uploadedBytes()); settings<span class="operator">.</span>setValue(<span class="string">"downloadedBytes"</span><span class="operator">,</span> jobs<span class="operator">.</span>at(i)<span class="operator">.</span>client<span class="operator">-</span><span class="operator">></span>downloadedBytes()); settings<span class="operator">.</span>setValue(<span class="string">"resumeState"</span><span class="operator">,</span> jobs<span class="operator">.</span>at(i)<span class="operator">.</span>client<span class="operator">-</span><span class="operator">></span>dumpedState()); } settings<span class="operator">.</span>endArray(); settings<span class="operator">.</span>sync(); } <span class="type">void</span> MainWindow<span class="operator">::</span>updateState(TorrentClient<span class="operator">::</span>State) { <span class="comment">// Update the state string whenever the client's state changes.</span> TorrentClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>TorrentClient <span class="operator">*</span><span class="operator">></span>(sender()); <span class="type">int</span> row <span class="operator">=</span> rowOfClient(client); <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>topLevelItem(row); <span class="keyword">if</span> (item) { item<span class="operator">-</span><span class="operator">></span>setToolTip(<span class="number">0</span><span class="operator">,</span> tr(<span class="string">"Torrent: %1<br>Destination: %2<br>State: %3"</span>) <span class="operator">.</span>arg(jobs<span class="operator">.</span>at(row)<span class="operator">.</span>torrentFileName) <span class="operator">.</span>arg(jobs<span class="operator">.</span>at(row)<span class="operator">.</span>destinationDirectory) <span class="operator">.</span>arg(client<span class="operator">-</span><span class="operator">></span>stateString())); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">5</span><span class="operator">,</span> client<span class="operator">-</span><span class="operator">></span>stateString()); } setActionsEnabled(); } <span class="type">void</span> MainWindow<span class="operator">::</span>updatePeerInfo() { <span class="comment">// Update the number of connected, visited, seed and leecher peers.</span> TorrentClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>TorrentClient <span class="operator">*</span><span class="operator">></span>(sender()); <span class="type">int</span> row <span class="operator">=</span> rowOfClient(client); <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>topLevelItem(row); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">1</span><span class="operator">,</span> tr(<span class="string">"%1/%2"</span>)<span class="operator">.</span>arg(client<span class="operator">-</span><span class="operator">></span>connectedPeerCount()) <span class="operator">.</span>arg(client<span class="operator">-</span><span class="operator">></span>seedCount())); } <span class="type">void</span> MainWindow<span class="operator">::</span>updateProgress(<span class="type">int</span> percent) { TorrentClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>TorrentClient <span class="operator">*</span><span class="operator">></span>(sender()); <span class="type">int</span> row <span class="operator">=</span> rowOfClient(client); <span class="comment">// Update the progressbar.</span> <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>topLevelItem(row); <span class="keyword">if</span> (item) item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>number(percent)); } <span class="type">void</span> MainWindow<span class="operator">::</span>setActionsEnabled() { <span class="comment">// Find the view item and client for the current row, and update</span> <span class="comment">// the states of the actions.</span> <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">if</span> (<span class="operator">!</span>torrentView<span class="operator">-</span><span class="operator">></span>selectedItems()<span class="operator">.</span>isEmpty()) item <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>selectedItems()<span class="operator">.</span>first(); TorrentClient <span class="operator">*</span>client <span class="operator">=</span> item <span class="operator">?</span> jobs<span class="operator">.</span>at(torrentView<span class="operator">-</span><span class="operator">></span>indexOfTopLevelItem(item))<span class="operator">.</span>client : <span class="number">0</span>; bool pauseEnabled <span class="operator">=</span> client <span class="operator">&</span><span class="operator">&</span> ((client<span class="operator">-</span><span class="operator">></span>state() <span class="operator">=</span><span class="operator">=</span> TorrentClient<span class="operator">::</span>Paused) <span class="operator">|</span><span class="operator">|</span> (client<span class="operator">-</span><span class="operator">></span>state() <span class="operator">></span> TorrentClient<span class="operator">::</span>Preparing)); removeTorrentAction<span class="operator">-</span><span class="operator">></span>setEnabled(item <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>); pauseTorrentAction<span class="operator">-</span><span class="operator">></span>setEnabled(item <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> pauseEnabled); <span class="keyword">if</span> (client <span class="operator">&</span><span class="operator">&</span> client<span class="operator">-</span><span class="operator">></span>state() <span class="operator">=</span><span class="operator">=</span> TorrentClient<span class="operator">::</span>Paused) { pauseTorrentAction<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/icons/player_play.png"</span>)); pauseTorrentAction<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Resume torrent"</span>)); } <span class="keyword">else</span> { pauseTorrentAction<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/icons/player_pause.png"</span>)); pauseTorrentAction<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Pause torrent"</span>)); } <span class="type">int</span> row <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>indexOfTopLevelItem(item); upActionTool<span class="operator">-</span><span class="operator">></span>setEnabled(item <span class="operator">&</span><span class="operator">&</span> row <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>); downActionTool<span class="operator">-</span><span class="operator">></span>setEnabled(item <span class="operator">&</span><span class="operator">&</span> row <span class="operator">!</span><span class="operator">=</span> jobs<span class="operator">.</span>size() <span class="operator">-</span> <span class="number">1</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>updateDownloadRate(<span class="type">int</span> bytesPerSecond) { <span class="comment">// Update the download rate.</span> TorrentClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>TorrentClient <span class="operator">*</span><span class="operator">></span>(sender()); <span class="type">int</span> row <span class="operator">=</span> rowOfClient(client); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> num <span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%.1f KB/s"</span><span class="operator">,</span> bytesPerSecond <span class="operator">/</span> <span class="number">1024.0</span>); torrentView<span class="operator">-</span><span class="operator">></span>topLevelItem(row)<span class="operator">-</span><span class="operator">></span>setText(<span class="number">3</span><span class="operator">,</span> num); <span class="keyword">if</span> (<span class="operator">!</span>saveChanges) { saveChanges <span class="operator">=</span> <span class="keyword">true</span>; <span class="type"><a href="../qtcore/qtimer.html">QTimer</a></span><span class="operator">::</span>singleShot(<span class="number">5000</span><span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(saveSettings())); } } <span class="type">void</span> MainWindow<span class="operator">::</span>updateUploadRate(<span class="type">int</span> bytesPerSecond) { <span class="comment">// Update the upload rate.</span> TorrentClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>TorrentClient <span class="operator">*</span><span class="operator">></span>(sender()); <span class="type">int</span> row <span class="operator">=</span> rowOfClient(client); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> num <span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%.1f KB/s"</span><span class="operator">,</span> bytesPerSecond <span class="operator">/</span> <span class="number">1024.0</span>); torrentView<span class="operator">-</span><span class="operator">></span>topLevelItem(row)<span class="operator">-</span><span class="operator">></span>setText(<span class="number">4</span><span class="operator">,</span> num); <span class="keyword">if</span> (<span class="operator">!</span>saveChanges) { saveChanges <span class="operator">=</span> <span class="keyword">true</span>; <span class="type"><a href="../qtcore/qtimer.html">QTimer</a></span><span class="operator">::</span>singleShot(<span class="number">5000</span><span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(saveSettings())); } } <span class="type">void</span> MainWindow<span class="operator">::</span>pauseTorrent() { <span class="comment">// Pause or unpause the current torrent.</span> <span class="type">int</span> row <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>indexOfTopLevelItem(torrentView<span class="operator">-</span><span class="operator">></span>currentItem()); TorrentClient <span class="operator">*</span>client <span class="operator">=</span> jobs<span class="operator">.</span>at(row)<span class="operator">.</span>client; client<span class="operator">-</span><span class="operator">></span>setPaused(client<span class="operator">-</span><span class="operator">></span>state() <span class="operator">!</span><span class="operator">=</span> TorrentClient<span class="operator">::</span>Paused); setActionsEnabled(); } <span class="type">void</span> MainWindow<span class="operator">::</span>moveTorrentUp() { <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>currentItem(); <span class="type">int</span> row <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>indexOfTopLevelItem(item); <span class="keyword">if</span> (row <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) <span class="keyword">return</span>; Job tmp <span class="operator">=</span> jobs<span class="operator">.</span>at(row <span class="operator">-</span> <span class="number">1</span>); jobs<span class="operator">[</span>row <span class="operator">-</span> <span class="number">1</span><span class="operator">]</span> <span class="operator">=</span> jobs<span class="operator">[</span>row<span class="operator">]</span>; jobs<span class="operator">[</span>row<span class="operator">]</span> <span class="operator">=</span> tmp; <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>itemAbove <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>takeTopLevelItem(row <span class="operator">-</span> <span class="number">1</span>); torrentView<span class="operator">-</span><span class="operator">></span>insertTopLevelItem(row<span class="operator">,</span> itemAbove); setActionsEnabled(); } <span class="type">void</span> MainWindow<span class="operator">::</span>moveTorrentDown() { <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>item <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>currentItem(); <span class="type">int</span> row <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>indexOfTopLevelItem(item); <span class="keyword">if</span> (row <span class="operator">=</span><span class="operator">=</span> jobs<span class="operator">.</span>size() <span class="operator">-</span> <span class="number">1</span>) <span class="keyword">return</span>; Job tmp <span class="operator">=</span> jobs<span class="operator">.</span>at(row <span class="operator">+</span> <span class="number">1</span>); jobs<span class="operator">[</span>row <span class="operator">+</span> <span class="number">1</span><span class="operator">]</span> <span class="operator">=</span> jobs<span class="operator">[</span>row<span class="operator">]</span>; jobs<span class="operator">[</span>row<span class="operator">]</span> <span class="operator">=</span> tmp; <span class="type">QTreeWidgetItem</span> <span class="operator">*</span>itemAbove <span class="operator">=</span> torrentView<span class="operator">-</span><span class="operator">></span>takeTopLevelItem(row <span class="operator">+</span> <span class="number">1</span>); torrentView<span class="operator">-</span><span class="operator">></span>insertTopLevelItem(row<span class="operator">,</span> itemAbove); setActionsEnabled(); } <span class="keyword">static</span> <span class="type">int</span> rateFromValue(<span class="type">int</span> value) { <span class="type">int</span> rate <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">if</span> (value <span class="operator">></span><span class="operator">=</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> value <span class="operator"><</span> <span class="number">250</span>) { rate <span class="operator">=</span> <span class="number">1</span> <span class="operator">+</span> <span class="type">int</span>(value <span class="operator">*</span> <span class="number">0.124</span>); } <span class="keyword">else</span> <span class="keyword">if</span> (value <span class="operator"><</span> <span class="number">500</span>) { rate <span class="operator">=</span> <span class="number">32</span> <span class="operator">+</span> <span class="type">int</span>((value <span class="operator">-</span> <span class="number">250</span>) <span class="operator">*</span> <span class="number">0.384</span>); } <span class="keyword">else</span> <span class="keyword">if</span> (value <span class="operator"><</span> <span class="number">750</span>) { rate <span class="operator">=</span> <span class="number">128</span> <span class="operator">+</span> <span class="type">int</span>((value <span class="operator">-</span> <span class="number">500</span>) <span class="operator">*</span> <span class="number">1.536</span>); } <span class="keyword">else</span> { rate <span class="operator">=</span> <span class="number">512</span> <span class="operator">+</span> <span class="type">int</span>((value <span class="operator">-</span> <span class="number">750</span>) <span class="operator">*</span> <span class="number">6.1445</span>); } <span class="keyword">return</span> rate; } <span class="type">void</span> MainWindow<span class="operator">::</span>setUploadLimit(<span class="type">int</span> value) { <span class="type">int</span> rate <span class="operator">=</span> rateFromValue(value); uploadLimitLabel<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"%1 KB/s"</span>)<span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%4d"</span><span class="operator">,</span> rate))); RateController<span class="operator">::</span>instance()<span class="operator">-</span><span class="operator">></span>setUploadLimit(rate <span class="operator">*</span> <span class="number">1024</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>setDownloadLimit(<span class="type">int</span> value) { <span class="type">int</span> rate <span class="operator">=</span> rateFromValue(value); downloadLimitLabel<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"%1 KB/s"</span>)<span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>asprintf(<span class="string">"%4d"</span><span class="operator">,</span> rate))); RateController<span class="operator">::</span>instance()<span class="operator">-</span><span class="operator">></span>setDownloadLimit(rate <span class="operator">*</span> <span class="number">1024</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>about() { <span class="type">QLabel</span> <span class="operator">*</span>icon <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>; icon<span class="operator">-</span><span class="operator">></span>setPixmap(<span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span>(<span class="string">":/icons/peertopeer.png"</span>)); <span class="type">QLabel</span> <span class="operator">*</span>text <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>; text<span class="operator">-</span><span class="operator">></span>setWordWrap(<span class="keyword">true</span>); text<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"<p>The <b>Torrent Client</b> example demonstrates how to"</span> <span class="string">" write a complete peer-to-peer file sharing"</span> <span class="string">" application using Qt's network and thread classes.</p>"</span> <span class="string">"<p>This feature complete client implementation of"</span> <span class="string">" the BitTorrent protocol can efficiently"</span> <span class="string">" maintain several hundred network connections"</span> <span class="string">" simultaneously.</p>"</span>); <span class="type">QPushButton</span> <span class="operator">*</span>quitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(<span class="string">"OK"</span>); <span class="type">QHBoxLayout</span> <span class="operator">*</span>topLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>; topLayout<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">10</span>); topLayout<span class="operator">-</span><span class="operator">></span>setSpacing(<span class="number">10</span>); topLayout<span class="operator">-</span><span class="operator">></span>addWidget(icon); topLayout<span class="operator">-</span><span class="operator">></span>addWidget(text); <span class="type">QHBoxLayout</span> <span class="operator">*</span>bottomLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>; bottomLayout<span class="operator">-</span><span class="operator">></span>addStretch(); bottomLayout<span class="operator">-</span><span class="operator">></span>addWidget(quitButton); bottomLayout<span class="operator">-</span><span class="operator">></span>addStretch(); <span class="type">QVBoxLayout</span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>; mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(topLayout); mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(bottomLayout); <span class="type">QDialog</span> about(<span class="keyword">this</span>); about<span class="operator">.</span>setModal(<span class="keyword">true</span>); about<span class="operator">.</span>setWindowTitle(tr(<span class="string">"About Torrent Client"</span>)); about<span class="operator">.</span>setLayout(mainLayout); connect(quitButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="operator">&</span>about<span class="operator">,</span> SLOT(close())); about<span class="operator">.</span>exec(); } <span class="type">void</span> MainWindow<span class="operator">::</span>acceptFileDrop(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>fileName) { <span class="comment">// Create and show the "Add Torrent" dialog.</span> AddTorrentDialog <span class="operator">*</span>addTorrentDialog <span class="operator">=</span> <span class="keyword">new</span> AddTorrentDialog; lastDirectory <span class="operator">=</span> <span class="type"><a href="../qtcore/qfileinfo.html">QFileInfo</a></span>(fileName)<span class="operator">.</span>absolutePath(); addTorrentDialog<span class="operator">-</span><span class="operator">></span>setTorrent(fileName); addTorrentDialog<span class="operator">-</span><span class="operator">></span>deleteLater(); <span class="keyword">if</span> (<span class="operator">!</span>addTorrentDialog<span class="operator">-</span><span class="operator">></span>exec()) <span class="keyword">return</span>; <span class="comment">// Add the torrent to our list of downloads.</span> addTorrent(fileName<span class="operator">,</span> addTorrentDialog<span class="operator">-</span><span class="operator">></span>destinationFolder()); saveSettings(); } <span class="type">void</span> MainWindow<span class="operator">::</span>closeEvent(<span class="type"><a href="../qtgui/qcloseevent.html">QCloseEvent</a></span> <span class="operator">*</span>) { <span class="keyword">if</span> (jobs<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="comment">// Save upload / download numbers.</span> saveSettings(); saveChanges <span class="operator">=</span> <span class="keyword">false</span>; quitDialog <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QProgressDialog</span>(tr(<span class="string">"Disconnecting from trackers"</span>)<span class="operator">,</span> tr(<span class="string">"Abort"</span>)<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> jobsToStop<span class="operator">,</span> <span class="keyword">this</span>); <span class="comment">// Stop all clients, remove the rows from the view and wait for</span> <span class="comment">// them to signal that they have stopped.</span> jobsToStop <span class="operator">=</span> <span class="number">0</span>; jobsStopped <span class="operator">=</span> <span class="number">0</span>; foreach (Job job<span class="operator">,</span> jobs) { <span class="operator">+</span><span class="operator">+</span>jobsToStop; TorrentClient <span class="operator">*</span>client <span class="operator">=</span> job<span class="operator">.</span>client; client<span class="operator">-</span><span class="operator">></span>disconnect(); connect(client<span class="operator">,</span> SIGNAL(stopped())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(torrentStopped())); client<span class="operator">-</span><span class="operator">></span>stop(); <span class="keyword">delete</span> torrentView<span class="operator">-</span><span class="operator">></span>takeTopLevelItem(<span class="number">0</span>); } <span class="keyword">if</span> (jobsToStop <span class="operator">></span> jobsStopped) quitDialog<span class="operator">-</span><span class="operator">></span>exec(); quitDialog<span class="operator">-</span><span class="operator">></span>deleteLater(); quitDialog <span class="operator">=</span> <span class="number">0</span>; } TorrentView<span class="operator">::</span>TorrentView(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QTreeWidget</span>(parent) { <span class="preprocessor">#if QT_CONFIG(draganddrop)</span> setAcceptDrops(<span class="keyword">true</span>); <span class="preprocessor">#endif</span> } <span class="preprocessor">#if QT_CONFIG(draganddrop)</span> <span class="type">void</span> TorrentView<span class="operator">::</span>dragMoveEvent(<span class="type"><a href="../qtgui/qdragmoveevent.html">QDragMoveEvent</a></span> <span class="operator">*</span>event) { <span class="comment">// Accept file actions with a '.torrent' extension.</span> <span class="type"><a href="../qtcore/qurl.html">QUrl</a></span> url(event<span class="operator">-</span><span class="operator">></span>mimeData()<span class="operator">-</span><span class="operator">></span>text()); <span class="keyword">if</span> (url<span class="operator">.</span>isValid() <span class="operator">&</span><span class="operator">&</span> url<span class="operator">.</span>scheme() <span class="operator">=</span><span class="operator">=</span> <span class="string">"file"</span> <span class="operator">&</span><span class="operator">&</span> url<span class="operator">.</span>path()<span class="operator">.</span>toLower()<span class="operator">.</span>endsWith(<span class="string">".torrent"</span>)) event<span class="operator">-</span><span class="operator">></span>acceptProposedAction(); } <span class="type">void</span> TorrentView<span class="operator">::</span>dropEvent(<span class="type"><a href="../qtgui/qdropevent.html">QDropEvent</a></span> <span class="operator">*</span>event) { <span class="comment">// Accept drops if the file has a '.torrent' extension and it</span> <span class="comment">// exists.</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="../qtcore/qurl.html">QUrl</a></span>(event<span class="operator">-</span><span class="operator">></span>mimeData()<span class="operator">-</span><span class="operator">></span>text())<span class="operator">.</span>path(); <span class="keyword">if</span> (<span class="type"><a href="../qtcore/qfile.html">QFile</a></span><span class="operator">::</span>exists(fileName) <span class="operator">&</span><span class="operator">&</span> fileName<span class="operator">.</span>toLower()<span class="operator">.</span>endsWith(<span class="string">".torrent"</span>)) <span class="keyword">emit</span> fileDropped(fileName); } <span class="preprocessor">#endif</span> <span class="preprocessor">#include "mainwindow.moc"</span> </pre> </div> <!-- @@@torrent/mainwindow.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>