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<div class="title">kxmessages.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/****************************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"></span>
<a name="l00003"></a>00003 <span class="comment"> $Id: kxmessages.cpp 257688 2003-10-10 11:20:55Z lunakl $</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment"> Copyright (C) 2001-2003 Lubos Lunak <l.lunak@kde.org></span>
<a name="l00006"></a>00006 <span class="comment"></span>
<a name="l00007"></a>00007 <span class="comment">Permission is hereby granted, free of charge, to any person obtaining a</span>
<a name="l00008"></a>00008 <span class="comment">copy of this software and associated documentation files (the "Software"),</span>
<a name="l00009"></a>00009 <span class="comment">to deal in the Software without restriction, including without limitation</span>
<a name="l00010"></a>00010 <span class="comment">the rights to use, copy, modify, merge, publish, distribute, sublicense,</span>
<a name="l00011"></a>00011 <span class="comment">and/or sell copies of the Software, and to permit persons to whom the</span>
<a name="l00012"></a>00012 <span class="comment">Software is furnished to do so, subject to the following conditions:</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment">The above copyright notice and this permission notice shall be included in</span>
<a name="l00015"></a>00015 <span class="comment">all copies or substantial portions of the Software.</span>
<a name="l00016"></a>00016 <span class="comment"></span>
<a name="l00017"></a>00017 <span class="comment">THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
<a name="l00018"></a>00018 <span class="comment">IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
<a name="l00019"></a>00019 <span class="comment">FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL</span>
<a name="l00020"></a>00020 <span class="comment">THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
<a name="l00021"></a>00021 <span class="comment">LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span>
<a name="l00022"></a>00022 <span class="comment">FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span>
<a name="l00023"></a>00023 <span class="comment">DEALINGS IN THE SOFTWARE.</span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00025"></a>00025 <span class="comment">****************************************************************************/</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include "kxmessages.h"</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include <kapplication.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#ifdef Q_WS_X11 // FIXME(E): Figure out what parts we can/should emulate in QT/E</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <X11/Xlib.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">// for broadcasting</span>
<a name="l00037"></a>00037 <span class="keyword">const</span> <span class="keywordtype">long</span> BROADCAST_MASK = PropertyChangeMask;
<a name="l00038"></a>00038 <span class="comment">// CHECKME</span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 KXMessages::KXMessages( <span class="keyword">const</span> <span class="keywordtype">char</span>* accept_broadcast_P, <a class="codeRef" href="qwidget.html">QWidget</a>* parent_P )
<a name="l00041"></a>00041 : <a class="codeRef" href="qwidget.html">QWidget</a>( parent_P )
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="keywordflow">if</span>( accept_broadcast_P != NULL )
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 ( void ) kapp->desktop(); <span class="comment">//trigger desktop widget creation to select root window events</span>
<a name="l00046"></a>00046 kapp->installX11EventFilter( <span class="keyword">this</span> ); <span class="comment">// i.e. PropertyChangeMask</span>
<a name="l00047"></a>00047 accept_atom1 = XInternAtom( qt_xdisplay(), accept_broadcast_P, <span class="keyword">false</span> );
<a name="l00048"></a>00048 accept_atom2 = accept_atom1;
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 <span class="keywordflow">else</span>
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 accept_atom1 = accept_atom2 = None;
<a name="l00053"></a>00053 }
<a name="l00054"></a>00054 handle = <span class="keyword">new</span> <a class="codeRef" href="qwidget.html">QWidget</a>( <span class="keyword">this</span> );
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 KXMessages::KXMessages( <span class="keyword">const</span> <span class="keywordtype">char</span>* accept_broadcast_P, <a class="codeRef" href="qwidget.html">QWidget</a>* parent_P, <span class="keywordtype">bool</span> obsolete_P )
<a name="l00058"></a>00058 : <a class="codeRef" href="qwidget.html">QWidget</a>( parent_P )
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 <span class="keywordflow">if</span>( accept_broadcast_P != NULL )
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 ( void ) kapp->desktop(); <span class="comment">//trigger desktop widget creation to select root window events</span>
<a name="l00063"></a>00063 kapp->installX11EventFilter( <span class="keyword">this</span> ); <span class="comment">// i.e. PropertyChangeMask</span>
<a name="l00064"></a>00064 accept_atom2 = XInternAtom( qt_xdisplay(), accept_broadcast_P, <span class="keyword">false</span> );
<a name="l00065"></a>00065 accept_atom1 = obsolete_P ? accept_atom2
<a name="l00066"></a>00066 : XInternAtom( qt_xdisplay(), <a class="codeRef" href="qcstring.html">QCString</a>( accept_broadcast_P ) + <span class="stringliteral">"_BEGIN"</span>, <span class="keyword">false</span> );
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068 <span class="keywordflow">else</span>
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 accept_atom1 = accept_atom2 = None;
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072 handle = <span class="keyword">new</span> <a class="codeRef" href="qwidget.html">QWidget</a>( <span class="keyword">this</span> );
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075 KXMessages::~KXMessages()
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <span class="comment">// delete d; no private data yet</span>
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordtype">void</span> KXMessages::broadcastMessage( <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P )
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 broadcastMessage( msg_type_P, message_P, -1, <span class="keyword">true</span> );
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="keywordtype">void</span> KXMessages::broadcastMessage( <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P,
<a name="l00087"></a>00087 <span class="keywordtype">int</span> screen_P, <span class="keywordtype">bool</span> obsolete_P )
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 Atom a2 = XInternAtom( qt_xdisplay(), msg_type_P, <span class="keyword">false</span> );
<a name="l00090"></a>00090 Atom a1 = obsolete_P ? a2 : XInternAtom( qt_xdisplay(), <a class="codeRef" href="qcstring.html">QCString</a>( msg_type_P ) + <span class="stringliteral">"_BEGIN"</span>, <span class="keyword">false</span> );
<a name="l00091"></a>00091 Window root = screen_P == -1 ? qt_xrootwin() : qt_xrootwin( screen_P );
<a name="l00092"></a>00092 send_message_internal( root, message_P, BROADCAST_MASK, qt_xdisplay(),
<a name="l00093"></a>00093 a1, a2, handle->winId());
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="keywordtype">void</span> KXMessages::sendMessage( WId w_P, <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P )
<a name="l00097"></a>00097 {
<a name="l00098"></a>00098 sendMessage( w_P, msg_type_P, message_P, <span class="keyword">true</span> );
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="keywordtype">void</span> KXMessages::sendMessage( WId w_P, <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P,
<a name="l00102"></a>00102 <span class="keywordtype">bool</span> obsolete_P )
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 Atom a2 = XInternAtom( qt_xdisplay(), msg_type_P, <span class="keyword">false</span> );
<a name="l00105"></a>00105 Atom a1 = obsolete_P ? a2 : XInternAtom( qt_xdisplay(), <a class="codeRef" href="qcstring.html">QCString</a>( msg_type_P ) + <span class="stringliteral">"_BEGIN"</span>, <span class="keyword">false</span> );
<a name="l00106"></a>00106 send_message_internal( w_P, message_P, 0, qt_xdisplay(), a1, a2, handle->winId());
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="keywordtype">bool</span> KXMessages::broadcastMessageX( Display* disp, <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P,
<a name="l00110"></a>00110 <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P )
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 <span class="keywordflow">return</span> broadcastMessageX( disp, msg_type_P, message_P, -1, <span class="keyword">true</span> );
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keywordtype">bool</span> KXMessages::broadcastMessageX( Display* disp, <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P,
<a name="l00116"></a>00116 <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P, <span class="keywordtype">int</span> screen_P, <span class="keywordtype">bool</span> obsolete_P )
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 <span class="keywordflow">if</span>( disp == NULL )
<a name="l00119"></a>00119 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00120"></a>00120 Atom a2 = XInternAtom( disp, msg_type_P, <span class="keyword">false</span> );
<a name="l00121"></a>00121 Atom a1 = obsolete_P ? a2 : XInternAtom( disp, <a class="codeRef" href="qcstring.html">QCString</a>( msg_type_P ) + <span class="stringliteral">"_BEGIN"</span>, <span class="keyword">false</span> );
<a name="l00122"></a>00122 Window root = screen_P == -1 ? DefaultRootWindow( disp ) : RootWindow( disp, screen_P );
<a name="l00123"></a>00123 Window win = XCreateSimpleWindow( disp, root, 0, 0, 1, 1,
<a name="l00124"></a>00124 0, BlackPixel( disp, screen_P == -1 ? DefaultScreen( disp ) : screen_P ),
<a name="l00125"></a>00125 BlackPixel( disp, screen_P == -1 ? DefaultScreen( disp ) : screen_P ));
<a name="l00126"></a>00126 send_message_internal( root, message_P, BROADCAST_MASK, disp,
<a name="l00127"></a>00127 a1, a2, win );
<a name="l00128"></a>00128 XDestroyWindow( disp, win );
<a name="l00129"></a>00129 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordtype">bool</span> KXMessages::sendMessageX( Display* disp, WId w_P, <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P,
<a name="l00133"></a>00133 <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P )
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 <span class="keywordflow">return</span> sendMessageX( disp, w_P, msg_type_P, message_P, <span class="keyword">true</span> );
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="keywordtype">bool</span> KXMessages::sendMessageX( Display* disp, WId w_P, <span class="keyword">const</span> <span class="keywordtype">char</span>* msg_type_P,
<a name="l00139"></a>00139 <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& message_P, <span class="keywordtype">bool</span> obsolete_P )
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141 <span class="keywordflow">if</span>( disp == NULL )
<a name="l00142"></a>00142 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00143"></a>00143 Atom a2 = XInternAtom( disp, msg_type_P, <span class="keyword">false</span> );
<a name="l00144"></a>00144 Atom a1 = obsolete_P ? a2 : XInternAtom( disp, <a class="codeRef" href="qcstring.html">QCString</a>( msg_type_P ) + <span class="stringliteral">"_BEGIN"</span>, <span class="keyword">false</span> );
<a name="l00145"></a>00145 Window win = XCreateSimpleWindow( disp, DefaultRootWindow( disp ), 0, 0, 1, 1,
<a name="l00146"></a>00146 0, BlackPixelOfScreen( DefaultScreenOfDisplay( disp )),
<a name="l00147"></a>00147 BlackPixelOfScreen( DefaultScreenOfDisplay( disp )));
<a name="l00148"></a>00148 send_message_internal( w_P, message_P, 0, disp, a1, a2, win );
<a name="l00149"></a>00149 XDestroyWindow( disp, win );
<a name="l00150"></a>00150 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="keywordtype">void</span> KXMessages::send_message_internal( WId w_P, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a>& msg_P, <span class="keywordtype">long</span> mask_P,
<a name="l00154"></a>00154 Display* disp, Atom atom1_P, Atom atom2_P, Window handle_P )
<a name="l00155"></a>00155 {
<a name="l00156"></a>00156 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pos = 0;
<a name="l00157"></a>00157 <a class="codeRef" href="qcstring.html">QCString</a> msg = msg_P.<a class="codeRef" href="qstring.html#utf8">utf8</a>();
<a name="l00158"></a>00158 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> len = strlen( msg );
<a name="l00159"></a>00159 XEvent e;
<a name="l00160"></a>00160 e.xclient.type = ClientMessage;
<a name="l00161"></a>00161 e.xclient.message_type = atom1_P; <span class="comment">// leading message</span>
<a name="l00162"></a>00162 e.xclient.display = disp;
<a name="l00163"></a>00163 e.xclient.window = handle_P;
<a name="l00164"></a>00164 e.xclient.format = 8;
<a name="l00165"></a>00165 <span class="keywordflow">do</span>
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;
<a name="l00168"></a>00168 <span class="keywordflow">for</span>( i = 0;
<a name="l00169"></a>00169 i < 20 && i + pos <= len;
<a name="l00170"></a>00170 ++i )
<a name="l00171"></a>00171 e.xclient.data.b[ i ] = msg[ i + pos ];
<a name="l00172"></a>00172 XSendEvent( disp, w_P, <span class="keyword">false</span>, mask_P, &e );
<a name="l00173"></a>00173 e.xclient.message_type = atom2_P; <span class="comment">// following messages</span>
<a name="l00174"></a>00174 pos += i;
<a name="l00175"></a>00175 } <span class="keywordflow">while</span>( pos <= len );
<a name="l00176"></a>00176 XFlush( disp );
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordtype">bool</span> KXMessages::x11Event( XEvent* ev_P )
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 <span class="keywordflow">if</span>( ev_P->type != ClientMessage || ev_P->xclient.format != 8 )
<a name="l00182"></a>00182 <span class="keywordflow">return</span> <a class="codeRef" href="qwidget.html#x11Event">QWidget::x11Event</a>( ev_P );
<a name="l00183"></a>00183 <span class="keywordflow">if</span>( ev_P->xclient.message_type != accept_atom1 && ev_P->xclient.message_type != accept_atom2 )
<a name="l00184"></a>00184 <span class="keywordflow">return</span> <a class="codeRef" href="qwidget.html#x11Event">QWidget::x11Event</a>( ev_P );
<a name="l00185"></a>00185 <span class="keywordtype">char</span> buf[ 21 ]; <span class="comment">// can't be longer</span>
<a name="l00186"></a>00186 <span class="keywordtype">int</span> i;
<a name="l00187"></a>00187 <span class="keywordflow">for</span>( i = 0;
<a name="l00188"></a>00188 i < 20 && ev_P->xclient.data.b[ i ] != <span class="charliteral">'\0'</span>;
<a name="l00189"></a>00189 ++i )
<a name="l00190"></a>00190 buf[ i ] = ev_P->xclient.data.b[ i ];
<a name="l00191"></a>00191 buf[ i ] = <span class="charliteral">'\0'</span>;
<a name="l00192"></a>00192 <span class="keywordflow">if</span>( incoming_messages.contains( ev_P->xclient.window ))
<a name="l00193"></a>00193 {
<a name="l00194"></a>00194 <span class="keywordflow">if</span>( ev_P->xclient.message_type == accept_atom1 && accept_atom1 != accept_atom2 )
<a name="l00195"></a>00195 <span class="comment">// two different messages on the same window at the same time shouldn't happen anyway</span>
<a name="l00196"></a>00196 incoming_messages[ ev_P->xclient.window ] = <a class="codeRef" href="qcstring.html">QCString</a>();
<a name="l00197"></a>00197 incoming_messages[ ev_P->xclient.window ] += buf;
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 <span class="keywordflow">else</span>
<a name="l00200"></a>00200 {
<a name="l00201"></a>00201 <span class="keywordflow">if</span>( ev_P->xclient.message_type == accept_atom2 && accept_atom1 != accept_atom2 )
<a name="l00202"></a>00202 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// middle of message, but we don't have the beginning</span>
<a name="l00203"></a>00203 incoming_messages[ ev_P->xclient.window ] = buf;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 <span class="keywordflow">if</span>( i < 20 ) <span class="comment">// last message fragment</span>
<a name="l00206"></a>00206 {
<a name="l00207"></a>00207 emit gotMessage( <a class="codeRef" href="qstring.html#fromUtf8">QString::fromUtf8</a>( incoming_messages[ ev_P->xclient.window ] ));
<a name="l00208"></a>00208 incoming_messages.remove( ev_P->xclient.window );
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// lets other KXMessages instances get the event too</span>
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="preprocessor">#include "kxmessages.moc"</span>
<a name="l00214"></a>00214 <span class="preprocessor">#endif</span>
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