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<h1 class="title">mainwindow.cpp Example File</h1>
<span class="small-subtitle">network/torrent/mainwindow.cpp</span>
<!-- $$$network/torrent/mainwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include <QtGui></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"><a href="qtreewidget.html">QTreeWidget</a></span>
{
Q_OBJECT
<span class="keyword">public</span>:
TorrentView(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>);
<span class="keyword">signals</span>:
<span class="type">void</span> fileDropped(<span class="keyword">const</span> <span class="type"><a href="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="qdragmoveevent.html">QDragMoveEvent</a></span> <span class="operator">*</span>event);
<span class="type">void</span> dropEvent(<span class="type"><a href="qdropevent.html">QDropEvent</a></span> <span class="operator">*</span>event);
};
<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"><a href="qitemdelegate.html">QItemDelegate</a></span>
{
Q_OBJECT
<span class="keyword">public</span>:
<span class="keyword">inline</span> TorrentViewDelegate(MainWindow <span class="operator">*</span>mainWindow) : <span class="type"><a href="qitemdelegate.html">QItemDelegate</a></span>(mainWindow) {}
<span class="keyword">inline</span> <span class="type">void</span> paint(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstyleoptionviewitem.html">QStyleOptionViewItem</a></span> <span class="operator">&</span>option<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&</span>index ) <span class="keyword">const</span>
{
<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"><a href="qitemdelegate.html">QItemDelegate</a></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"><a href="qstyleoptionprogressbar.html">QStyleOptionProgressBar</a></span> progressBarOption;
progressBarOption<span class="operator">.</span>state <span class="operator">=</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>State_Enabled;
progressBarOption<span class="operator">.</span>direction <span class="operator">=</span> <span class="type"><a href="qapplication.html">QApplication</a></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"><a href="qapplication.html">QApplication</a></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="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="qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<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"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>style()<span class="operator">-</span><span class="operator">></span>drawControl(<span class="type"><a href="qstyle.html">QStyle</a></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"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qmainwindow.html">QMainWindow</a></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="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"><a href="qabstractitemview.html">QAbstractItemView</a></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="qfontmetrics.html">QFontMetrics</a></span> fm <span class="operator">=</span> fontMetrics();
<span class="type"><a href="qheaderview.html">QHeaderView</a></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>width(<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>width(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>width(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="qtglobal.html#qMax">qMax</a>(fm<span class="operator">.</span>width(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>width(<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="qtglobal.html#qMax">qMax</a>(fm<span class="operator">.</span>width(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>width(<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="qtglobal.html#qMax">qMax</a>(fm<span class="operator">.</span>width(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>width(tr(<span class="string">"Downloading"</span>) <span class="operator">+</span> <span class="string">" "</span>)));
<span class="comment">// Create common actions</span>
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>newTorrentAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="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"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="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"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="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"><a href="qmenu.html">QMenu</a></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="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"><a href="qmenu.html">QMenu</a></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"><a href="qtoolbar.html">QToolBar</a></span> <span class="operator">*</span>topBar <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbar.html">QToolBar</a></span>(tr(<span class="string">"Tools"</span>));
addToolBar(<span class="type"><a href="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="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="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"><a href="qtoolbar.html">QToolBar</a></span> <span class="operator">*</span>bottomBar <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbar.html">QToolBar</a></span>(tr(<span class="string">"Rate control"</span>));
addToolBar(<span class="type"><a href="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"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="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"><a href="qlabel.html">QLabel</a></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"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"0 KB/s"</span>))));
downloadLimitLabel<span class="operator">-</span><span class="operator">></span>setFixedSize(<span class="type"><a href="qsize.html">QSize</a></span>(fm<span class="operator">.</span>width(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"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="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"><a href="qlabel.html">QLabel</a></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"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"0 KB/s"</span>))));
uploadLimitLabel<span class="operator">-</span><span class="operator">></span>setFixedSize(<span class="type"><a href="qsize.html">QSize</a></span>(fm<span class="operator">.</span>width(tr(<span class="string">"99999 KB/s"</span>))<span class="operator">,</span> fm<span class="operator">.</span>lineSpacing()));
<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="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="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(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(moveTorrentUp()));
connect(downActionTool<span class="operator">,</span> SIGNAL(triggered(<span class="type">bool</span>))<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="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="qt.html">Qt</a></span><span class="operator">::</span>QueuedConnection);
}
<span class="type"><a href="qsize.html">QSize</a></span> MainWindow<span class="operator">::</span>sizeHint() <span class="keyword">const</span>
{
<span class="keyword">const</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></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>width(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="qsize.html">QSize</a></span>(width<span class="operator">,</span> <span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">::</span>sizeHint()<span class="operator">.</span>height())
<span class="operator">.</span>expandedTo(<span class="type"><a href="qapplication.html">QApplication</a></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="qsettings.html">QSettings</a></span> settings(<span class="string">"Trolltech"</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="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="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="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="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());
}
}
}
<span class="type">bool</span> 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="qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="qfiledialog.html">QFileDialog</a></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="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="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="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"><a href="qmessagebox.html">QMessageBox</a></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();
}
<span class="type">bool</span> MainWindow<span class="operator">::</span>addTorrent(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>fileName<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>destinationFolder<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="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"><a href="qmessagebox.html">QMessageBox</a></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"><a href="qmessagebox.html">QMessageBox</a></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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span>(torrentView);
<span class="type"><a href="qstring.html">QString</a></span> baseFileName <span class="operator">=</span> <span class="type"><a href="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="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="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="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="qsettings.html">QSettings</a></span> settings(<span class="string">"Trolltech"</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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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="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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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>;
<span class="type">bool</span> 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="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="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="type"><a href="qstring.html">QString</a></span> num;
num<span class="operator">.</span>sprintf(<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="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="type"><a href="qstring.html">QString</a></span> num;
num<span class="operator">.</span>sprintf(<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="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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></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="qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<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="qstring.html">QString</a></span>()<span class="operator">.</span>sprintf(<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"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>icon <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>;
icon<span class="operator">-</span><span class="operator">></span>setPixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">":/icons/peertopeer.png"</span>));
<span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>text <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></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"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>quitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(<span class="string">"OK"</span>);
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>topLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></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"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>bottomLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></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"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></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"><a href="qdialog.html">QDialog</a></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="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="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="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"><a href="qprogressdialog.html">QProgressDialog</a></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"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qtreewidget.html">QTreeWidget</a></span>(parent)
{
setAcceptDrops(<span class="keyword">true</span>);
}
<span class="type">void</span> TorrentView<span class="operator">::</span>dragMoveEvent(<span class="type"><a href="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="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>toLower() <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="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="qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="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="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">#include "mainwindow.moc"</span></pre>
</div>
<!-- @@@network/torrent/mainwindow.cpp -->
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