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<h2><a name="content"></a>akregator/src</h2>
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<h1>feediconmanager.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> This file is part of Akregator.</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> Copyright (C) 2004 Sashmit Bhaduri <smt@vfemail.net></span>
<a name="l00005"></a>00005 <span class="comment"> 2005 Frank Osterfeld <frank.osterfeld@kdemail.net></span>
<a name="l00006"></a>00006 <span class="comment"></span>
<a name="l00007"></a>00007 <span class="comment"> This program is free software; you can redistribute it and/or modify</span>
<a name="l00008"></a>00008 <span class="comment"> it under the terms of the GNU General Public License as published by</span>
<a name="l00009"></a>00009 <span class="comment"> the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00010"></a>00010 <span class="comment"> (at your option) any later version.</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment"> This program is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00015"></a>00015 <span class="comment"> GNU General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"></span>
<a name="l00017"></a>00017 <span class="comment"> You should have received a copy of the GNU General Public License</span>
<a name="l00018"></a>00018 <span class="comment"> along with this program; if not, write to the Free Software</span>
<a name="l00019"></a>00019 <span class="comment"> Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.</span>
<a name="l00020"></a>00020 <span class="comment"></span>
<a name="l00021"></a>00021 <span class="comment"> As a special exception, permission is given to link this program</span>
<a name="l00022"></a>00022 <span class="comment"> with any edition of Qt, and distribute the resulting executable,</span>
<a name="l00023"></a>00023 <span class="comment"> without including the source code for Qt in the source distribution.</span>
<a name="l00024"></a>00024 <span class="comment">*/</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#include "feed.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "feediconmanager.h"</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include <dcopclient.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <kapplication.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <kstandarddirs.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <kstaticdeleter.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <kurl.h></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="preprocessor">#include <qdict.h></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <qpixmap.h></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <qvaluelist.h></span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="keyword">namespace </span>Akregator {
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">class </span>FeedIconManager::FeedIconManagerPrivate
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="keyword">public</span>:
<a name="l00045"></a>00045 QValueList<Feed*> registeredFeeds;
<a name="l00046"></a>00046 QDict<Feed> urlDict;
<a name="l00047"></a>00047 };
<a name="l00048"></a>00048
<a name="l00049"></a>00049 FeedIconManager *FeedIconManager::m_instance = 0;
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">static</span> KStaticDeleter<FeedIconManager> feediconmanagersd;
<a name="l00052"></a>00052
<a name="l00053"></a>00053 FeedIconManager* FeedIconManager::self()
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 <span class="keywordflow">if</span> (!m_instance)
<a name="l00056"></a>00056 m_instance = feediconmanagersd.setObject(m_instance, <span class="keyword">new</span> FeedIconManager);
<a name="l00057"></a>00057 <span class="keywordflow">return</span> m_instance;
<a name="l00058"></a>00058 }
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keywordtype">void</span> FeedIconManager::fetchIcon(Feed* feed)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (!d->registeredFeeds.contains(feed))
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 d->registeredFeeds.append(feed);
<a name="l00065"></a>00065 connect(feed, SIGNAL(<a class="code" href="classAkregator_1_1TreeNode.html#fcef33edac2cf72ebd015ed3f0ad42a0" title="Emitted when this object is deleted.">signalDestroyed</a>(<a class="code" href="classAkregator_1_1TreeNode.html#4d50d114c306c99fc6a7bd6e56b59780" title="Standard constructor.">TreeNode</a>*)), <span class="keyword">this</span>, SLOT(slotFeedDestroyed(<a class="code" href="classAkregator_1_1TreeNode.html#4d50d114c306c99fc6a7bd6e56b59780" title="Standard constructor.">TreeNode</a>*)));
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 QString iconURL = getIconURL(KURL(feed->xmlUrl()));
<a name="l00068"></a>00068 d->urlDict.insert(iconURL, feed);
<a name="l00069"></a>00069 loadIcon(iconURL);
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072 FeedIconManager::FeedIconManager(QObject * <a class="code" href="classAkregator_1_1TreeNode.html#badc676b2769b5f3b245a5ba4f12faad" title="Returns the parent node.">parent</a>, <span class="keyword">const</span> <span class="keywordtype">char</span> *name)
<a name="l00073"></a>00073 : QObject(parent, name), DCOPObject(<span class="stringliteral">"FeedIconManager"</span>), d(new FeedIconManagerPrivate)
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 connectDCOPSignal(<span class="stringliteral">"kded"</span>,
<a name="l00076"></a>00076 <span class="stringliteral">"favicons"</span>, <span class="stringliteral">"iconChanged(bool, QString, QString)"</span>,
<a name="l00077"></a>00077 <span class="stringliteral">"slotIconChanged(bool, QString, QString)"</span>, <span class="keyword">false</span>);
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080
<a name="l00081"></a>00081 FeedIconManager::~FeedIconManager()
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="keyword">delete</span> d;
<a name="l00084"></a>00084 d = 0;
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keywordtype">void</span> FeedIconManager::loadIcon(<span class="keyword">const</span> QString & url)
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 KURL u(url);
<a name="l00090"></a>00090
<a name="l00091"></a>00091 QString iconFile = iconLocation(u);
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keywordflow">if</span> (iconFile.isNull())
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 QByteArray data;
<a name="l00096"></a>00096 QDataStream ds(data, IO_WriteOnly);
<a name="l00097"></a>00097 ds << u;
<a name="l00098"></a>00098 kapp->dcopClient()->send(<span class="stringliteral">"kded"</span>, <span class="stringliteral">"favicons"</span>, <span class="stringliteral">"downloadHostIcon(KURL)"</span>,
<a name="l00099"></a>00099 data);
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 <span class="keywordflow">else</span>
<a name="l00102"></a>00102 slotIconChanged(<span class="keyword">false</span>, url, iconFile);
<a name="l00103"></a>00103
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 QString FeedIconManager::getIconURL(<span class="keyword">const</span> KURL& url)
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 <span class="keywordflow">return</span> <span class="stringliteral">"http://"</span> +url.host() + <span class="stringliteral">"/"</span>;
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110
<a name="l00111"></a>00111 QString FeedIconManager::iconLocation(<span class="keyword">const</span> KURL & url)<span class="keyword"> const</span>
<a name="l00112"></a>00112 <span class="keyword"></span>{
<a name="l00113"></a>00113 QByteArray data, reply;
<a name="l00114"></a>00114 QCString replyType;
<a name="l00115"></a>00115 QDataStream ds(data, IO_WriteOnly);
<a name="l00116"></a>00116
<a name="l00117"></a>00117 ds << url;
<a name="l00118"></a>00118
<a name="l00119"></a>00119 kapp->dcopClient()->call(<span class="stringliteral">"kded"</span>, <span class="stringliteral">"favicons"</span>, <span class="stringliteral">"iconForURL(KURL)"</span>, data,
<a name="l00120"></a>00120 replyType, reply);
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keywordflow">if</span> (replyType == <span class="stringliteral">"QString"</span>) {
<a name="l00123"></a>00123 QDataStream replyStream(reply, IO_ReadOnly);
<a name="l00124"></a>00124 QString result;
<a name="l00125"></a>00125 replyStream >> result;
<a name="l00126"></a>00126 <span class="keywordflow">return</span> result;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="keywordflow">return</span> QString::null;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordtype">void</span> FeedIconManager::slotFeedDestroyed(<a class="code" href="classAkregator_1_1TreeNode.html#4d50d114c306c99fc6a7bd6e56b59780" title="Standard constructor.">TreeNode</a>* node)
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 <a class="code" href="classAkregator_1_1Feed.html#84851953810b8330701abfd7015e8ff4" title="default constructor">Feed</a>* feed = <span class="keyword">dynamic_cast<</span><a class="code" href="classAkregator_1_1Feed.html#84851953810b8330701abfd7015e8ff4" title="default constructor">Feed</a>*<span class="keyword">></span>(node);
<a name="l00135"></a>00135 <span class="keywordflow">if</span> (feed)
<a name="l00136"></a>00136 <span class="keywordflow">while</span> (d->registeredFeeds.contains(feed))
<a name="l00137"></a>00137 d->registeredFeeds.remove(d->registeredFeeds.find(feed));
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordtype">void</span> FeedIconManager::slotIconChanged(<span class="keywordtype">bool</span> <span class="comment">/*isHost*/</span>, <span class="keyword">const</span> QString& hostOrURL,
<a name="l00141"></a>00141 <span class="keyword">const</span> QString& iconName)
<a name="l00142"></a>00142 {
<a name="l00143"></a>00143 QString iconFile = KGlobal::dirs()->findResource(<span class="stringliteral">"cache"</span>,
<a name="l00144"></a>00144 iconName+<span class="stringliteral">".png"</span>);
<a name="l00145"></a>00145 <a class="code" href="classAkregator_1_1Feed.html#84851953810b8330701abfd7015e8ff4" title="default constructor">Feed</a>* f;
<a name="l00146"></a>00146 QPixmap p = QPixmap(iconFile);
<a name="l00147"></a>00147 <span class="keywordflow">if</span> (!p.isNull()) <span class="comment">// we don't set null pixmaps, as feed checks pixmap.isNull() to find out whether the icon was already loaded or not. It would request the icon another time, resulting an infinite loop (until stack overflow that is</span>
<a name="l00148"></a>00148 {
<a name="l00149"></a>00149 <span class="keywordflow">while</span> (( f = d->urlDict.take(hostOrURL) ))
<a name="l00150"></a>00150 <span class="keywordflow">if</span> (d->registeredFeeds.contains(f))
<a name="l00151"></a>00151 f->setFavicon(p);
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 emit signalIconChanged(hostOrURL, iconFile);
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155
<a name="l00156"></a>00156 } <span class="comment">// namespace Akregator</span>
<a name="l00157"></a>00157 <span class="preprocessor">#include "feediconmanager.moc"</span>
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