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<div class="title">krootpixmap.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* vi: ts=8 sts=4 sw=4</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This file is part of the KDE project, module kdeui.</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 1999,2000 Geert Jansen <jansen@kde.org></span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * You can Freely distribute this program under the GNU Library</span>
<a name="l00008"></a>00008 <span class="comment"> * General Public License. See the file "COPYING.LIB" for the exact</span>
<a name="l00009"></a>00009 <span class="comment"> * licensing terms.</span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#include <qwidget.h></span>
<a name="l00013"></a>00013 <span class="preprocessor">#include <qtimer.h></span>
<a name="l00014"></a>00014 <span class="preprocessor">#include <qrect.h></span>
<a name="l00015"></a>00015 <span class="preprocessor">#include <qimage.h></span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include <kapplication.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <kimageeffect.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <kpixmapio.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <kwinmodule.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <kwin.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <netwm.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <dcopclient.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <dcopref.h></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include <ksharedpixmap.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <krootpixmap.h></span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">static</span> <a class="codeRef" href="qstring.html">QString</a> wallpaperForDesktop(<span class="keywordtype">int</span> desktop)
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 <span class="keywordflow">return</span> <a class="codeRef" doxygen="dcop.tag:../../dcop/html/" href="../../dcop/html/classDCOPRef.html">DCOPRef</a>(<span class="stringliteral">"kdesktop"</span>, <span class="stringliteral">"KBackgroundIface"</span>).<a class="codeRef" doxygen="dcop.tag:../../dcop/html/" href="../../dcop/html/classDCOPRef.html#a8975f6ec7c25e8d24f8d0a8123921c3d">call</a>(<span class="stringliteral">"currentWallpaper"</span>, desktop);
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keyword">class </span>KRootPixmapData
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 <span class="keyword">public</span>:
<a name="l00039"></a>00039 <a class="codeRef" href="qwidget.html">QWidget</a> *toplevel;
<a name="l00040"></a>00040 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span> <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKWinModule.html">KWinModule</a> *kwin;
<a name="l00042"></a>00042 <span class="preprocessor">#endif</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span>};
<a name="l00044"></a>00044
<a name="l00045"></a>00045
<a name="l00046"></a><a class="code" href="classKRootPixmap.html#a7f4d7bd16d89b7b70d18a9b76bfaa930">00046</a> <a class="code" href="classKRootPixmap.html#a7f4d7bd16d89b7b70d18a9b76bfaa930" title="Constructs a KRootPixmap.">KRootPixmap::KRootPixmap</a>( <a class="codeRef" href="qwidget.html">QWidget</a> *widget, <span class="keyword">const</span> <span class="keywordtype">char</span> *name )
<a name="l00047"></a>00047 : <a class="codeRef" href="qobject.html">QObject</a>(widget, name ? name : <span class="stringliteral">"KRootPixmap"</span> ), m_Desk(0), m_pWidget(widget)
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 init();
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a><a class="code" href="classKRootPixmap.html#a8901a817bad74210fc2c880aac361ec7">00052</a> <a class="code" href="classKRootPixmap.html#a7f4d7bd16d89b7b70d18a9b76bfaa930" title="Constructs a KRootPixmap.">KRootPixmap::KRootPixmap</a>( <a class="codeRef" href="qwidget.html">QWidget</a> *widget, <a class="codeRef" href="qobject.html">QObject</a> *parent, <span class="keyword">const</span> <span class="keywordtype">char</span> *name )
<a name="l00053"></a>00053 : <a class="codeRef" href="qobject.html">QObject</a>( parent, name ? name : <span class="stringliteral">"KRootPixmap"</span> ), m_Desk(0), m_pWidget(widget)
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 init();
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="keywordtype">void</span> KRootPixmap::init()
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 d = <span class="keyword">new</span> KRootPixmapData;
<a name="l00061"></a>00061 m_Fade = 0;
<a name="l00062"></a>00062 m_pPixmap = <span class="keyword">new</span> KSharedPixmap; <span class="comment">//ordinary KPixmap on win32</span>
<a name="l00063"></a>00063 m_pTimer = <span class="keyword">new</span> <a class="codeRef" href="qtimer.html">QTimer</a>( <span class="keyword">this</span> );
<a name="l00064"></a>00064 m_bInit = <span class="keyword">false</span>;
<a name="l00065"></a>00065 m_bActive = <span class="keyword">false</span>;
<a name="l00066"></a>00066 m_bCustomPaint = <span class="keyword">false</span>;
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <a class="codeRef" href="qobject.html#connect">connect</a>(kapp, SIGNAL(backgroundChanged(<span class="keywordtype">int</span>)), SLOT(slotBackgroundChanged(<span class="keywordtype">int</span>)));
<a name="l00069"></a>00069 <a class="codeRef" href="qobject.html#connect">connect</a>(m_pTimer, SIGNAL(timeout()), SLOT(<a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">repaint</a>()));
<a name="l00070"></a>00070 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00071"></a>00071 <span class="preprocessor"></span> <a class="codeRef" href="qobject.html#connect">connect</a>(m_pPixmap, SIGNAL(done(<span class="keywordtype">bool</span>)), SLOT(slotDone(<span class="keywordtype">bool</span>)));
<a name="l00072"></a>00072
<a name="l00073"></a>00073 d->kwin = <span class="keyword">new</span> <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKWinModule.html">KWinModule</a>( <span class="keyword">this</span> );
<a name="l00074"></a>00074 <a class="codeRef" href="qobject.html#connect">connect</a>(d->kwin, SIGNAL(windowChanged(WId, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>)), SLOT(desktopChanged(WId, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>)));
<a name="l00075"></a>00075 <a class="codeRef" href="qobject.html#connect">connect</a>(d->kwin, SIGNAL(currentDesktopChanged(<span class="keywordtype">int</span>)), SLOT(desktopChanged(<span class="keywordtype">int</span>)));
<a name="l00076"></a>00076 <span class="preprocessor">#endif</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span>
<a name="l00078"></a>00078 d->toplevel = m_pWidget-><a class="codeRef" href="qwidget.html#topLevelWidget">topLevelWidget</a>();
<a name="l00079"></a>00079 d->toplevel->installEventFilter(<span class="keyword">this</span>);
<a name="l00080"></a>00080 m_pWidget->installEventFilter(<span class="keyword">this</span>);
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00083"></a><a class="code" href="classKRootPixmap.html#acd78d4fe1e404e9f26aff3ad179b56a9">00083</a> <a class="code" href="classKRootPixmap.html#acd78d4fe1e404e9f26aff3ad179b56a9" title="Destructs the object.">KRootPixmap::~KRootPixmap</a>()
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 <span class="keyword">delete</span> m_pPixmap;
<a name="l00086"></a>00086 <span class="keyword">delete</span> d;
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089
<a name="l00090"></a><a class="code" href="classKRootPixmap.html#a7d6cc077850f56ba4ece0b57afab2af4">00090</a> <span class="keywordtype">int</span> <a class="code" href="classKRootPixmap.html#a7d6cc077850f56ba4ece0b57afab2af4" title="Returns the number of the current desktop.">KRootPixmap::currentDesktop</a>()<span class="keyword"> const</span>
<a name="l00091"></a>00091 <span class="keyword"></span>{
<a name="l00092"></a>00092 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00093"></a>00093 <span class="preprocessor"></span> NETRootInfo rinfo( qt_xdisplay(), NET::CurrentDesktop );
<a name="l00094"></a>00094 rinfo.activate();
<a name="l00095"></a>00095 <span class="keywordflow">return</span> rinfo.currentDesktop();
<a name="l00096"></a>00096 <span class="preprocessor">#else</span>
<a name="l00097"></a>00097 <span class="preprocessor"></span> <span class="comment">//OK?</span>
<a name="l00098"></a>00098 <span class="keywordflow">return</span> <a class="codeRef" href="qapplication.html#desktop">QApplication::desktop</a>()->screenNumber(m_pWidget);
<a name="l00099"></a>00099 <span class="preprocessor">#endif</span>
<a name="l00100"></a>00100 <span class="preprocessor"></span>}
<a name="l00101"></a>00101
<a name="l00102"></a>00102
<a name="l00103"></a><a class="code" href="classKRootPixmap.html#a23d8bfc31ae2e3363f90b0f892b164d7">00103</a> <span class="keywordtype">void</span> <a class="code" href="classKRootPixmap.html#a23d8bfc31ae2e3363f90b0f892b164d7" title="Starts background handling.">KRootPixmap::start</a>()
<a name="l00104"></a>00104 {
<a name="l00105"></a>00105 <span class="keywordflow">if</span> (m_bActive)
<a name="l00106"></a>00106 <span class="keywordflow">return</span>;
<a name="l00107"></a>00107
<a name="l00108"></a>00108 m_bActive = <span class="keyword">true</span>;
<a name="l00109"></a>00109 <span class="keywordflow">if</span> ( !<a class="code" href="classKRootPixmap.html#abd3fff841f5553a38df6e6e46f82a78f" title="Checks if pseudo-transparency is available.">isAvailable</a>() )
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111 <span class="comment">// We will get a KIPC message when the shared pixmap is available.</span>
<a name="l00112"></a>00112 <a class="code" href="classKRootPixmap.html#a8ab850ee97a9a0d37ded9223d6ed2332" title="Asks KDesktop to export the desktop background as a KSharedPixmap.">enableExports</a>();
<a name="l00113"></a>00113 <span class="keywordflow">return</span>;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 <span class="keywordflow">if</span> (m_bInit)
<a name="l00116"></a>00116 <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">repaint</a>(<span class="keyword">true</span>);
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119
<a name="l00120"></a><a class="code" href="classKRootPixmap.html#a87bf48be0d36839b7de34974451094ca">00120</a> <span class="keywordtype">void</span> <a class="code" href="classKRootPixmap.html#a87bf48be0d36839b7de34974451094ca" title="Stops background handling.">KRootPixmap::stop</a>()
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 m_bActive = <span class="keyword">false</span>;
<a name="l00123"></a>00123 m_pTimer-><a class="codeRef" href="qtimer.html#stop">stop</a>();
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126
<a name="l00127"></a><a class="code" href="classKRootPixmap.html#a7939dcc352e6914fee0095d90366a2db">00127</a> <span class="keywordtype">void</span> <a class="code" href="classKRootPixmap.html#a7939dcc352e6914fee0095d90366a2db" title="Sets the fade effect.">KRootPixmap::setFadeEffect</a>(<span class="keywordtype">double</span> fade, <span class="keyword">const</span> <a class="codeRef" href="qcolor.html">QColor</a> &color)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (fade < 0)
<a name="l00130"></a>00130 m_Fade = 0;
<a name="l00131"></a>00131 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (fade > 1)
<a name="l00132"></a>00132 m_Fade = 1;
<a name="l00133"></a>00133 <span class="keywordflow">else</span>
<a name="l00134"></a>00134 m_Fade = fade;
<a name="l00135"></a>00135 m_FadeColor = <a class="code" href="classKRootPixmap.html#a1ef7ffa40b9e0ce1af7c0af43719fd68">color</a>;
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordflow">if</span> ( m_bActive && m_bInit ) <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">repaint</a>(<span class="keyword">true</span>);
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140
<a name="l00141"></a><a class="code" href="classKRootPixmap.html#a79732f65a59c863eb16ccbac6cc857be">00141</a> <span class="keywordtype">bool</span> <a class="code" href="classKRootPixmap.html#a79732f65a59c863eb16ccbac6cc857be" title="Reimplemented to filter the events from the target widget and track its movements.">KRootPixmap::eventFilter</a>(<a class="codeRef" href="qobject.html">QObject</a> *, <a class="codeRef" href="qevent.html">QEvent</a> *event)
<a name="l00142"></a>00142 {
<a name="l00143"></a>00143 <span class="comment">// Initialise after the first show or paint event on the managed widget.</span>
<a name="l00144"></a>00144 <span class="keywordflow">if</span> (!m_bInit && ((event-><a class="codeRef" href="qevent.html#type">type</a>() == QEvent::Show) || (event-><a class="codeRef" href="qevent.html#type">type</a>() == QEvent::Paint)))
<a name="l00145"></a>00145 {
<a name="l00146"></a>00146 m_bInit = <span class="keyword">true</span>;
<a name="l00147"></a>00147 m_Desk = <a class="code" href="classKRootPixmap.html#a7d6cc077850f56ba4ece0b57afab2af4" title="Returns the number of the current desktop.">currentDesktop</a>();
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keywordflow">if</span> (!m_bActive)
<a name="l00151"></a>00151 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="keywordflow">switch</span> (event-><a class="codeRef" href="qevent.html#type">type</a>())
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 <span class="keywordflow">case</span> QEvent::Resize:
<a name="l00156"></a>00156 <span class="keywordflow">case</span> QEvent::Move:
<a name="l00157"></a>00157 m_pTimer-><a class="codeRef" href="qtimer.html#start">start</a>(100, <span class="keyword">true</span>);
<a name="l00158"></a>00158 <span class="keywordflow">break</span>;
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordflow">case</span> QEvent::Paint:
<a name="l00161"></a>00161 m_pTimer-><a class="codeRef" href="qtimer.html#start">start</a>(0, <span class="keyword">true</span>);
<a name="l00162"></a>00162 <span class="keywordflow">break</span>;
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="keywordflow">case</span> QEvent::Reparent:
<a name="l00165"></a>00165 d->toplevel->removeEventFilter(<span class="keyword">this</span>);
<a name="l00166"></a>00166 d->toplevel = m_pWidget-><a class="codeRef" href="qwidget.html#topLevelWidget">topLevelWidget</a>();
<a name="l00167"></a>00167 d->toplevel->installEventFilter(<span class="keyword">this</span>);
<a name="l00168"></a>00168 <span class="keywordflow">break</span>;
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keywordflow">default</span>:
<a name="l00171"></a>00171 <span class="keywordflow">break</span>;
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// always continue processing</span>
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="keywordtype">void</span> KRootPixmap::desktopChanged(<span class="keywordtype">int</span> desktop)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 <span class="keywordflow">if</span> (wallpaperForDesktop(m_Desk) == wallpaperForDesktop(desktop) &&
<a name="l00180"></a>00180 !wallpaperForDesktop(m_Desk).isNull())
<a name="l00181"></a>00181 <span class="keywordflow">return</span>;
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00184"></a>00184 <span class="preprocessor"></span> <span class="keywordflow">if</span> (<a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKWin.html#a8ce591daa3996c2bfb98b8de6c82b79a">KWin::windowInfo</a>(m_pWidget-><a class="codeRef" href="qwidget.html#topLevelWidget">topLevelWidget</a>()->winId()).desktop() == NET::OnAllDesktops &&
<a name="l00185"></a>00185 <a class="code" href="classKRootPixmap.html#abcd909d90f9a9c2e76ea53a8ad55b3dc" title="Returns the name of the shared pixmap (only needed for low level access)">pixmapName</a>(m_Desk) != <a class="code" href="classKRootPixmap.html#abcd909d90f9a9c2e76ea53a8ad55b3dc" title="Returns the name of the shared pixmap (only needed for low level access)">pixmapName</a>(desktop))
<a name="l00186"></a>00186 #endif
<a name="l00187"></a>00187 <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">repaint</a>(<span class="keyword">true</span>);
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keywordtype">void</span> KRootPixmap::desktopChanged( WId window, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> properties )
<a name="l00191"></a>00191 {
<a name="l00192"></a>00192 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00193"></a>00193 <span class="preprocessor"></span> <span class="keywordflow">if</span>( !(properties & NET::WMDesktop) ||
<a name="l00194"></a>00194 (window != m_pWidget-><a class="codeRef" href="qwidget.html#topLevelWidget">topLevelWidget</a>()->winId()))
<a name="l00195"></a>00195 <span class="keywordflow">return</span>;
<a name="l00196"></a>00196 <span class="preprocessor">#endif</span>
<a name="l00197"></a>00197 <span class="preprocessor"></span>
<a name="l00198"></a>00198 <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#gafbb9aa4a84d6c0563d46550454b9714b">kdDebug</a>() << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga634e2de2b699b31ea3a79f984e836d64">k_funcinfo</a> << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga313d520ed8f8f6b46eeef22cfb3b082a">endl</a>;
<a name="l00199"></a>00199 <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">repaint</a>(<span class="keyword">true</span>);
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201
<a name="l00202"></a><a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b">00202</a> <span class="keywordtype">void</span> <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">KRootPixmap::repaint</a>()
<a name="l00203"></a>00203 {
<a name="l00204"></a>00204 <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">repaint</a>(<span class="keyword">false</span>);
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00207"></a>00207
<a name="l00208"></a><a class="code" href="classKRootPixmap.html#a716f30f8943cc67ebc833085c1fdbefd">00208</a> <span class="keywordtype">void</span> <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">KRootPixmap::repaint</a>(<span class="keywordtype">bool</span> force)
<a name="l00209"></a>00209 {
<a name="l00210"></a>00210 <a class="codeRef" href="qpoint.html">QPoint</a> p1 = m_pWidget-><a class="codeRef" href="qwidget.html#mapToGlobal">mapToGlobal</a>(m_pWidget-><a class="codeRef" href="qwidget.html#rect">rect</a>().topLeft());
<a name="l00211"></a>00211 <a class="codeRef" href="qpoint.html">QPoint</a> p2 = m_pWidget-><a class="codeRef" href="qwidget.html#mapToGlobal">mapToGlobal</a>(m_pWidget-><a class="codeRef" href="qwidget.html#rect">rect</a>().bottomRight());
<a name="l00212"></a>00212 <span class="keywordflow">if</span> (!force && (m_Rect == <a class="codeRef" href="qrect.html">QRect</a>(p1, p2)))
<a name="l00213"></a>00213 <span class="keywordflow">return</span>;
<a name="l00214"></a>00214
<a name="l00215"></a>00215 <span class="comment">// Due to northwest bit gravity, we don't need to do anything if the</span>
<a name="l00216"></a>00216 <span class="comment">// bottom right corner of the widget is moved inward.</span>
<a name="l00217"></a>00217 <span class="comment">// That said, konsole clears the background when it is resized, so</span>
<a name="l00218"></a>00218 <span class="comment">// we have to reset the background pixmap.</span>
<a name="l00219"></a>00219 <span class="keywordflow">if</span> ((p1 == m_Rect.<a class="codeRef" href="qrect.html#topLeft">topLeft</a>()) && (m_pWidget-><a class="codeRef" href="qwidget.html#width">width</a>() < m_Rect.<a class="codeRef" href="qrect.html#width">width</a>()) &&
<a name="l00220"></a>00220 (m_pWidget-><a class="codeRef" href="qwidget.html#height">height</a>() < m_Rect.<a class="codeRef" href="qrect.html#height">height</a>())
<a name="l00221"></a>00221 )
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 m_Rect = <a class="codeRef" href="qrect.html">QRect</a>(p1, p2);
<a name="l00224"></a>00224 <a class="code" href="classKRootPixmap.html#a37492c8979789e7c82a17872156734db" title="Called when the pixmap has been updated.">updateBackground</a>( m_pPixmap );
<a name="l00225"></a>00225 <span class="keywordflow">return</span>;
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227 m_Rect = <a class="codeRef" href="qrect.html">QRect</a>(p1, p2);
<a name="l00228"></a>00228 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00229"></a>00229 <span class="preprocessor"></span> m_Desk = <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKWin.html#a8ce591daa3996c2bfb98b8de6c82b79a">KWin::windowInfo</a>(m_pWidget-><a class="codeRef" href="qwidget.html#topLevelWidget">topLevelWidget</a>()->winId()).desktop();
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (m_Desk == NET::OnAllDesktops)
<a name="l00231"></a>00231 m_Desk = <a class="code" href="classKRootPixmap.html#a7d6cc077850f56ba4ece0b57afab2af4" title="Returns the number of the current desktop.">currentDesktop</a>();
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="comment">// KSharedPixmap will correctly generate a tile for us.</span>
<a name="l00234"></a>00234 m_pPixmap->loadFromShared(<a class="code" href="classKRootPixmap.html#abcd909d90f9a9c2e76ea53a8ad55b3dc" title="Returns the name of the shared pixmap (only needed for low level access)">pixmapName</a>(m_Desk), m_Rect);
<a name="l00235"></a>00235 <span class="preprocessor">#else</span>
<a name="l00236"></a>00236 <span class="preprocessor"></span> m_Desk = <a class="code" href="classKRootPixmap.html#a7d6cc077850f56ba4ece0b57afab2af4" title="Returns the number of the current desktop.">currentDesktop</a>();
<a name="l00237"></a>00237 <span class="comment">// !x11 note: tile is not generated!</span>
<a name="l00238"></a>00238 <span class="comment">// TODO: pixmapName() is a nonsense now!</span>
<a name="l00239"></a>00239 m_pPixmap->load( <a class="code" href="classKRootPixmap.html#abcd909d90f9a9c2e76ea53a8ad55b3dc" title="Returns the name of the shared pixmap (only needed for low level access)">pixmapName</a>(m_Desk) );
<a name="l00240"></a>00240 <span class="keywordflow">if</span> (!m_pPixmap->isNull()) {
<a name="l00241"></a>00241 m_pPixmap->resize( m_Rect.<a class="codeRef" href="qrect.html#size">size</a>() );
<a name="l00242"></a>00242 slotDone(<span class="keyword">true</span>);
<a name="l00243"></a>00243 }
<a name="l00244"></a>00244 <span class="preprocessor">#endif</span>
<a name="l00245"></a>00245 <span class="preprocessor"></span>}
<a name="l00246"></a>00246
<a name="l00247"></a><a class="code" href="classKRootPixmap.html#abd3fff841f5553a38df6e6e46f82a78f">00247</a> <span class="keywordtype">bool</span> <a class="code" href="classKRootPixmap.html#abd3fff841f5553a38df6e6e46f82a78f" title="Checks if pseudo-transparency is available.">KRootPixmap::isAvailable</a>()<span class="keyword"> const</span>
<a name="l00248"></a>00248 <span class="keyword"></span>{
<a name="l00249"></a>00249 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00250"></a>00250 <span class="preprocessor"></span> <span class="keywordflow">return</span> m_pPixmap->isAvailable(<a class="code" href="classKRootPixmap.html#abcd909d90f9a9c2e76ea53a8ad55b3dc" title="Returns the name of the shared pixmap (only needed for low level access)">pixmapName</a>(m_Desk));
<a name="l00251"></a>00251 <span class="preprocessor">#else</span>
<a name="l00252"></a>00252 <span class="preprocessor"></span> <span class="keywordflow">return</span> m_pPixmap->isNull();
<a name="l00253"></a>00253 <span class="preprocessor">#endif</span>
<a name="l00254"></a>00254 <span class="preprocessor"></span>}
<a name="l00255"></a>00255
<a name="l00256"></a><a class="code" href="classKRootPixmap.html#abcd909d90f9a9c2e76ea53a8ad55b3dc">00256</a> <a class="codeRef" href="qstring.html">QString</a> <a class="code" href="classKRootPixmap.html#abcd909d90f9a9c2e76ea53a8ad55b3dc" title="Returns the name of the shared pixmap (only needed for low level access)">KRootPixmap::pixmapName</a>(<span class="keywordtype">int</span> desk) {
<a name="l00257"></a>00257 <a class="codeRef" href="qstring.html">QString</a> pattern = <a class="codeRef" href="qstring.html">QString</a>(<span class="stringliteral">"DESKTOP%1"</span>);
<a name="l00258"></a>00258 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00259"></a>00259 <span class="preprocessor"></span> <span class="keywordtype">int</span> screen_number = DefaultScreen(qt_xdisplay());
<a name="l00260"></a>00260 <span class="keywordflow">if</span> (screen_number) {
<a name="l00261"></a>00261 pattern = <a class="codeRef" href="qstring.html">QString</a>(<span class="stringliteral">"SCREEN%1-DESKTOP"</span>).<a class="codeRef" href="qstring.html#arg">arg</a>(screen_number) + <span class="stringliteral">"%1"</span>;
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263 <span class="preprocessor">#endif</span>
<a name="l00264"></a>00264 <span class="preprocessor"></span> <span class="keywordflow">return</span> pattern.<a class="codeRef" href="qstring.html#arg">arg</a>( desk );
<a name="l00265"></a>00265 }
<a name="l00266"></a>00266
<a name="l00267"></a>00267
<a name="l00268"></a><a class="code" href="classKRootPixmap.html#a8ab850ee97a9a0d37ded9223d6ed2332">00268</a> <span class="keywordtype">void</span> <a class="code" href="classKRootPixmap.html#a8ab850ee97a9a0d37ded9223d6ed2332" title="Asks KDesktop to export the desktop background as a KSharedPixmap.">KRootPixmap::enableExports</a>()
<a name="l00269"></a>00269 {
<a name="l00270"></a>00270 <span class="preprocessor">#ifdef Q_WS_X11</span>
<a name="l00271"></a>00271 <span class="preprocessor"></span> <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#gafbb9aa4a84d6c0563d46550454b9714b">kdDebug</a>(270) << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#gac6aaa2ce4f4342059ece6b0ff5dfba2b">k_lineinfo</a> << <span class="stringliteral">"activating background exports.\n"</span>;
<a name="l00272"></a>00272 <a class="codeRef" doxygen="dcop.tag:../../dcop/html/" href="../../dcop/html/classDCOPClient.html">DCOPClient</a> *client = kapp->dcopClient();
<a name="l00273"></a>00273 <span class="keywordflow">if</span> (!client-><a class="codeRef" doxygen="dcop.tag:../../dcop/html/" href="../../dcop/html/classDCOPClient.html#a1572b811045662009b0e9d01df2ee963">isAttached</a>())
<a name="l00274"></a>00274 client-><a class="codeRef" doxygen="dcop.tag:../../dcop/html/" href="../../dcop/html/classDCOPClient.html#a5b91eb6f361ac9afc06055155f349ff1">attach</a>();
<a name="l00275"></a>00275 <a class="codeRef" href="qbytearray.html">QByteArray</a> data;
<a name="l00276"></a>00276 <a class="codeRef" href="qdatastream.html">QDataStream</a> args( data, IO_WriteOnly );
<a name="l00277"></a>00277 args << 1;
<a name="l00278"></a>00278
<a name="l00279"></a>00279 <a class="codeRef" href="qcstring.html">QCString</a> appname( <span class="stringliteral">"kdesktop"</span> );
<a name="l00280"></a>00280 <span class="keywordtype">int</span> screen_number = DefaultScreen(qt_xdisplay());
<a name="l00281"></a>00281 <span class="keywordflow">if</span> ( screen_number )
<a name="l00282"></a>00282 appname.<a class="codeRef" href="qcstring.html#sprintf">sprintf</a>(<span class="stringliteral">"kdesktop-screen-%d"</span>, screen_number );
<a name="l00283"></a>00283
<a name="l00284"></a>00284 client-><a class="codeRef" doxygen="dcop.tag:../../dcop/html/" href="../../dcop/html/classDCOPClient.html#ab4c4945c3be14e9997d0b411c040b5f0">send</a>( appname, <span class="stringliteral">"KBackgroundIface"</span>, <span class="stringliteral">"setExport(int)"</span>, data );
<a name="l00285"></a>00285 <span class="preprocessor">#endif</span>
<a name="l00286"></a>00286 <span class="preprocessor"></span>}
<a name="l00287"></a>00287
<a name="l00288"></a>00288
<a name="l00289"></a>00289 <span class="keywordtype">void</span> KRootPixmap::slotDone(<span class="keywordtype">bool</span> success)
<a name="l00290"></a>00290 {
<a name="l00291"></a>00291 <span class="keywordflow">if</span> (!success)
<a name="l00292"></a>00292 {
<a name="l00293"></a>00293 <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#ga9acd682001598171edf8ecb104fdad2b">kdWarning</a>(270) << <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__kdebug.html#gac6aaa2ce4f4342059ece6b0ff5dfba2b">k_lineinfo</a> << <span class="stringliteral">"loading of desktop background failed.\n"</span>;
<a name="l00294"></a>00294 <span class="keywordflow">return</span>;
<a name="l00295"></a>00295 }
<a name="l00296"></a>00296
<a name="l00297"></a>00297 <span class="comment">// We need to test active as the pixmap might become available</span>
<a name="l00298"></a>00298 <span class="comment">// after the widget has been destroyed.</span>
<a name="l00299"></a>00299 <span class="keywordflow">if</span> ( m_bActive )
<a name="l00300"></a>00300 <a class="code" href="classKRootPixmap.html#a37492c8979789e7c82a17872156734db" title="Called when the pixmap has been updated.">updateBackground</a>( m_pPixmap );
<a name="l00301"></a>00301 }
<a name="l00302"></a>00302
<a name="l00303"></a><a class="code" href="classKRootPixmap.html#a37492c8979789e7c82a17872156734db">00303</a> <span class="keywordtype">void</span> <a class="code" href="classKRootPixmap.html#a37492c8979789e7c82a17872156734db" title="Called when the pixmap has been updated.">KRootPixmap::updateBackground</a>( KSharedPixmap *spm )
<a name="l00304"></a>00304 {
<a name="l00305"></a>00305 <a class="codeRef" href="qpixmap.html">QPixmap</a> pm = *spm;
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <span class="keywordflow">if</span> (m_Fade > 1e-6)
<a name="l00308"></a>00308 {
<a name="l00309"></a>00309 <a class="code" href="classKPixmapIO.html" title="Fast QImage to/from QPixmap conversion.">KPixmapIO</a> io;
<a name="l00310"></a>00310 <a class="codeRef" href="qimage.html">QImage</a> img = io.<a class="code" href="classKPixmapIO.html#aa62a68b23b735956a2094a21fc917484" title="Convert a pixmap to an image.">convertToImage</a>(pm);
<a name="l00311"></a>00311 img = <a class="codeRef" doxygen="kdefx.tag:../../kdefx/html/" href="../../kdefx/html/classKImageEffect.html#a74dd14950a11bdca3e613a3e6036247c">KImageEffect::fade</a>(img, m_Fade, m_FadeColor);
<a name="l00312"></a>00312 pm = io.<a class="code" href="classKPixmapIO.html#ac70f40601e18c29abb68692c426a996a" title="Convert an image to a pixmap.">convertToPixmap</a>(img);
<a name="l00313"></a>00313 }
<a name="l00314"></a>00314
<a name="l00315"></a>00315 <span class="keywordflow">if</span> ( !m_bCustomPaint )
<a name="l00316"></a>00316 m_pWidget-><a class="codeRef" href="qwidget.html#setBackgroundPixmap">setBackgroundPixmap</a>( pm );
<a name="l00317"></a>00317 <span class="keywordflow">else</span> {
<a name="l00318"></a>00318 emit <a class="code" href="classKRootPixmap.html#a6bee18d4b50d03165adb80a28a8bfd3e" title="Emitted when the background needs updating and custom painting (see setCustomPainting(bool) ) is enab...">backgroundUpdated</a>( pm );
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320 }
<a name="l00321"></a>00321
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="keywordtype">void</span> KRootPixmap::slotBackgroundChanged(<span class="keywordtype">int</span> desk)
<a name="l00324"></a>00324 {
<a name="l00325"></a>00325 <span class="keywordflow">if</span> (!m_bInit || !m_bActive)
<a name="l00326"></a>00326 <span class="keywordflow">return</span>;
<a name="l00327"></a>00327
<a name="l00328"></a>00328 <span class="keywordflow">if</span> (desk == m_Desk)
<a name="l00329"></a>00329 <a class="code" href="classKRootPixmap.html#a95fab6909a0bea471c2149562f68037b" title="Repaints the widget background.">repaint</a>(<span class="keyword">true</span>);
<a name="l00330"></a>00330 }
<a name="l00331"></a>00331
<a name="l00332"></a>00332 <span class="preprocessor">#include "krootpixmap.moc"</span>
</pre></div></div>
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<option value="classKEditToolbar.html">kedittoolbar</option>, <option value="classKEditToolbarWidget.html">kedittoolbarwidget</option>, <option value="classKFloatValidator.html">kfloatvalidator</option>, <option value="classKFontChooser.html">kfontchooser</option>, <option value="classKFontCombo.html">kfontcombo</option>, <option value="classKFontDialog.html">kfontdialog</option>, <option value="classKFontRequester.html">kfontrequester</option>, <option value="classKGradientSelector.html">kgradientselector</option>, <option value="classKGuiItem.html">kguiitem</option>, <option value="classKHelpMenu.html">khelpmenu</option>, <option value="classKHistoryCombo.html">khistorycombo</option>, <option value="classKHSSelector.html">khsselector</option>, <option value="classKIconView.html">kiconview</option>, <option value="classKIconViewItem.html">kiconviewitem</option>, <option value="classKIconViewSearchLine.html">kiconviewsearchline</option>, <option 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