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<h1>kmanagerselection.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"></span>
<a name="l00003"></a>00003 <span class="comment"> $Id: kmanagerselection.cpp 282061 2004-01-23 16:22:46Z lunakl $</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment"> Copyright (C) 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">#ifdef HAVE_CONFIG_H</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#include "config.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#endif </span>
<a name="l00030"></a>00030 <span class="preprocessor"></span>
<a name="l00031"></a>00031 <span class="preprocessor">#ifdef HAVE_SYS_TYPES_H</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#include <sys/types.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#endif</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="preprocessor">#ifdef HAVE_SYS_TIME_H</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#include <sys/time.h></span>
<a name="l00037"></a>00037 <span class="preprocessor">#endif</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span>
<a name="l00039"></a>00039 <span class="preprocessor">#ifdef HAVE_UNISTD_H</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#include <unistd.h></span>
<a name="l00041"></a>00041 <span class="preprocessor">#endif</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <qobject.h></span>
<a name="l00044"></a>00044 <span class="preprocessor">#ifdef Q_WS_X11 // FIXME(E)</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span>
<a name="l00046"></a>00046 <span class="preprocessor">#include "kmanagerselection.h"</span>
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00049"></a>00049 <span class="preprocessor">#include <qwidget.h></span>
<a name="l00050"></a>00050 <span class="preprocessor">#include <kapplication.h></span>
<a name="l00051"></a>00051 <span class="preprocessor">#include <kxerrorhandler.h></span>
<a name="l00052"></a>00052 <span class="preprocessor">#include <X11/Xatom.h></span>
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">class </span>KSelectionOwnerPrivate
<a name="l00055"></a>00055 : <span class="keyword">public</span> <a class="codeRef" doxygen="qt.tag:" href="qwidget.html">QWidget</a>
<a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="keyword">public</span>:
<a name="l00058"></a>00058 KSelectionOwnerPrivate( KSelectionOwner* owner );
<a name="l00059"></a>00059 <span class="keyword">protected</span>:
<a name="l00060"></a>00060 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="codeRef" doxygen="qt.tag:" href="qwidget.html#x11Event">x11Event</a>( XEvent* ev );
<a name="l00061"></a>00061 <span class="keyword">private</span>:
<a name="l00062"></a>00062 KSelectionOwner* owner;
<a name="l00063"></a>00063 };
<a name="l00064"></a>00064
<a name="l00065"></a>00065 KSelectionOwnerPrivate::KSelectionOwnerPrivate( KSelectionOwner* owner_P )
<a name="l00066"></a>00066 : owner( owner_P )
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 kapp->installX11EventFilter( <span class="keyword">this</span> );
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordtype">bool</span> <a class="codeRef" doxygen="qt.tag:" href="qwidget.html#x11Event">KSelectionOwnerPrivate::x11Event</a>( XEvent* ev_P )
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="keywordflow">return</span> owner->filterEvent( ev_P );
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075
<a name="l00076"></a>00076 KSelectionOwner::KSelectionOwner( Atom selection_P, <span class="keywordtype">int</span> screen_P, <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>* parent_P )
<a name="l00077"></a>00077 : <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>( parent_P ),
<a name="l00078"></a>00078 selection( selection_P ),
<a name="l00079"></a>00079 screen( screen_P >= 0 ? screen_P : DefaultScreen( qt_xdisplay())),
<a name="l00080"></a>00080 window( None ),
<a name="l00081"></a>00081 timestamp( CurrentTime ),
<a name="l00082"></a>00082 extra1( 0 ), extra2( 0 ),
<a name="l00083"></a>00083 d( new KSelectionOwnerPrivate( this ))
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086
<a name="l00087"></a>00087 KSelectionOwner::KSelectionOwner( <span class="keyword">const</span> <span class="keywordtype">char</span>* selection_P, <span class="keywordtype">int</span> screen_P, <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>* parent_P )
<a name="l00088"></a>00088 : <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>( parent_P ),
<a name="l00089"></a>00089 selection( XInternAtom( qt_xdisplay(), selection_P, False )),
<a name="l00090"></a>00090 screen( screen_P >= 0 ? screen_P : DefaultScreen( qt_xdisplay())),
<a name="l00091"></a>00091 window( None ),
<a name="l00092"></a>00092 timestamp( CurrentTime ),
<a name="l00093"></a>00093 extra1( 0 ), extra2( 0 ),
<a name="l00094"></a>00094 d( new KSelectionOwnerPrivate( this ))
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00098"></a>00098 KSelectionOwner::~KSelectionOwner()
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 release();
<a name="l00101"></a>00101 <span class="keyword">delete</span> d;
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="keywordtype">bool</span> KSelectionOwner::claim( <span class="keywordtype">bool</span> force_P, <span class="keywordtype">bool</span> force_kill_P )
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106 <span class="keywordflow">if</span>( manager_atom == None )
<a name="l00107"></a>00107 getAtoms();
<a name="l00108"></a>00108 <span class="keywordflow">if</span>( timestamp != CurrentTime )
<a name="l00109"></a>00109 release();
<a name="l00110"></a>00110 Display* <span class="keyword">const</span> dpy = qt_xdisplay();
<a name="l00111"></a>00111 Window prev_owner = XGetSelectionOwner( dpy, selection );
<a name="l00112"></a>00112 <span class="keywordflow">if</span>( prev_owner != None )
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="keywordflow">if</span>( !force_P )
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 <span class="comment">// kdDebug() << "Selection already owned, failing" << endl;</span>
<a name="l00117"></a>00117 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 XSelectInput( dpy, prev_owner, StructureNotifyMask );
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 XSetWindowAttributes attrs;
<a name="l00122"></a>00122 attrs.override_redirect = True;
<a name="l00123"></a>00123 window = XCreateWindow( dpy, RootWindow( dpy, screen ), 0, 0, 1, 1,
<a name="l00124"></a>00124 0, CopyFromParent, InputOnly, CopyFromParent, CWOverrideRedirect, &attrs );
<a name="l00125"></a>00125 <span class="comment">// kdDebug() << "Using owner window " << window << endl;</span>
<a name="l00126"></a>00126 Atom tmp = XA_ATOM;
<a name="l00127"></a>00127 XSelectInput( dpy, window, PropertyChangeMask );
<a name="l00128"></a>00128 XChangeProperty( dpy, window, XA_ATOM, XA_ATOM, 32, PropModeReplace,
<a name="l00129"></a>00129 reinterpret_cast< unsigned char* >( &tmp ), 1 );
<a name="l00130"></a>00130 XEvent ev;
<a name="l00131"></a>00131 XSync( dpy, False );
<a name="l00132"></a>00132 XCheckTypedWindowEvent( dpy, window, PropertyNotify, &ev ); <span class="comment">// get a timestamp</span>
<a name="l00133"></a>00133 timestamp = ev.xproperty.time;
<a name="l00134"></a>00134 XSelectInput( dpy, window, StructureNotifyMask ); <span class="comment">// for DestroyNotify</span>
<a name="l00135"></a>00135 XSetSelectionOwner( dpy, selection, window, timestamp );
<a name="l00136"></a>00136 Window new_owner = XGetSelectionOwner( dpy, selection );
<a name="l00137"></a>00137 <span class="keywordflow">if</span>( new_owner != window )
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139 <span class="comment">// kdDebug() << "Failed to claim selection : " << new_owner << endl;</span>
<a name="l00140"></a>00140 XDestroyWindow( dpy, window );
<a name="l00141"></a>00141 timestamp = CurrentTime;
<a name="l00142"></a>00142 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 <span class="keywordflow">if</span>( prev_owner != None )
<a name="l00145"></a>00145 {
<a name="l00146"></a>00146 <span class="comment">// kdDebug() << "Waiting for previous owner to disown" << endl;</span>
<a name="l00147"></a>00147 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> cnt = 0;
<a name="l00148"></a>00148 ;
<a name="l00149"></a>00149 ++cnt )
<a name="l00150"></a>00150 {
<a name="l00151"></a>00151 <span class="keywordflow">if</span>( XCheckTypedWindowEvent( dpy, prev_owner, DestroyNotify, &ev ) == True )
<a name="l00152"></a>00152 <span class="keywordflow">break</span>;
<a name="l00153"></a>00153 <span class="keyword">struct </span>timeval tm = { 0, 50000 }; <span class="comment">// 50 ms</span>
<a name="l00154"></a>00154 select( 0, NULL, NULL, NULL, &tm );
<a name="l00155"></a>00155 <span class="keywordflow">if</span>( cnt == 19 )
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157 <span class="keywordflow">if</span>( force_kill_P )
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 <span class="comment">// kdDebug() << "Killing previous owner" << endl;</span>
<a name="l00160"></a>00160 XKillClient( dpy, prev_owner );
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162 <span class="keywordflow">break</span>;
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166 ev.type = ClientMessage;
<a name="l00167"></a>00167 ev.xclient.window = RootWindow( dpy, screen );
<a name="l00168"></a>00168 ev.xclient.display = dpy;
<a name="l00169"></a>00169 ev.xclient.message_type = manager_atom;
<a name="l00170"></a>00170 ev.xclient.format = 32;
<a name="l00171"></a>00171 ev.xclient.data.l[ 0 ] = timestamp;
<a name="l00172"></a>00172 ev.xclient.data.l[ 1 ] = selection;
<a name="l00173"></a>00173 ev.xclient.data.l[ 2 ] = window;
<a name="l00174"></a>00174 ev.xclient.data.l[ 3 ] = extra1;
<a name="l00175"></a>00175 ev.xclient.data.l[ 4 ] = extra2;
<a name="l00176"></a>00176 XSendEvent( dpy, RootWindow( dpy, screen ), False, StructureNotifyMask, &ev );
<a name="l00177"></a>00177 <span class="comment">// kdDebug() << "Claimed selection" << endl;</span>
<a name="l00178"></a>00178 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00179"></a>00179 }
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <span class="comment">// destroy resource first</span>
<a name="l00182"></a>00182 <span class="keywordtype">void</span> KSelectionOwner::release()
<a name="l00183"></a>00183 {
<a name="l00184"></a>00184 <span class="keywordflow">if</span>( timestamp == CurrentTime )
<a name="l00185"></a>00185 <span class="keywordflow">return</span>;
<a name="l00186"></a>00186 XDestroyWindow( qt_xdisplay(), window ); <span class="comment">// also makes the selection not owned</span>
<a name="l00187"></a>00187 <span class="comment">// kdDebug() << "Releasing selection" << endl;</span>
<a name="l00188"></a>00188 timestamp = CurrentTime;
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190
<a name="l00191"></a>00191 Window KSelectionOwner::ownerWindow()<span class="keyword"> const</span>
<a name="l00192"></a>00192 <span class="keyword"> </span>{
<a name="l00193"></a>00193 <span class="keywordflow">if</span>( timestamp == CurrentTime )
<a name="l00194"></a>00194 <span class="keywordflow">return</span> None;
<a name="l00195"></a>00195 <span class="keywordflow">return</span> window;
<a name="l00196"></a>00196 }
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordtype">void</span> KSelectionOwner::setData( <span class="keywordtype">long</span> extra1_P, <span class="keywordtype">long</span> extra2_P )
<a name="l00199"></a>00199 {
<a name="l00200"></a>00200 extra1 = extra1_P;
<a name="l00201"></a>00201 extra2 = extra2_P;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203
<a name="l00204"></a>00204 <span class="keywordtype">bool</span> KSelectionOwner::filterEvent( XEvent* ev_P )
<a name="l00205"></a>00205 {
<a name="l00206"></a>00206 <span class="keywordflow">if</span>( timestamp != CurrentTime && ev_P->xany.window == window )
<a name="l00207"></a>00207 {
<a name="l00208"></a>00208 <span class="keywordflow">if</span>( handleMessage( ev_P ))
<a name="l00209"></a>00209 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211 <span class="keywordflow">switch</span>( ev_P->type )
<a name="l00212"></a>00212 {
<a name="l00213"></a>00213 <span class="keywordflow">case</span> SelectionClear:
<a name="l00214"></a>00214 {
<a name="l00215"></a>00215 <span class="keywordflow">if</span>( timestamp == CurrentTime || ev_P->xselectionclear.selection != selection )
<a name="l00216"></a>00216 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00217"></a>00217 timestamp = CurrentTime;
<a name="l00218"></a>00218 <span class="comment">// kdDebug() << "Lost selection" << endl;</span>
<a name="l00219"></a>00219 emit lostOwnership();
<a name="l00220"></a>00220 XSelectInput( qt_xdisplay(), window, 0 );
<a name="l00221"></a>00221 XDestroyWindow( qt_xdisplay(), window );
<a name="l00222"></a>00222 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224 <span class="keywordflow">case</span> DestroyNotify:
<a name="l00225"></a>00225 {
<a name="l00226"></a>00226 <span class="keywordflow">if</span>( timestamp == CurrentTime || ev_P->xdestroywindow.window != window )
<a name="l00227"></a>00227 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00228"></a>00228 timestamp = CurrentTime;
<a name="l00229"></a>00229 <span class="comment">// kdDebug() << "Lost selection (destroyed)" << endl;</span>
<a name="l00230"></a>00230 emit lostOwnership();
<a name="l00231"></a>00231 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233 <span class="keywordflow">case</span> SelectionNotify:
<a name="l00234"></a>00234 {
<a name="l00235"></a>00235 <span class="keywordflow">if</span>( timestamp == CurrentTime || ev_P->xselection.selection != selection )
<a name="l00236"></a>00236 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00237"></a>00237 <span class="comment">// ignore?</span>
<a name="l00238"></a>00238 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240 <span class="keywordflow">case</span> SelectionRequest:
<a name="l00241"></a>00241 filter_selection_request( ev_P->xselectionrequest );
<a name="l00242"></a>00242 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00243"></a>00243 }
<a name="l00244"></a>00244 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="keywordtype">bool</span> KSelectionOwner::handleMessage( XEvent* )
<a name="l00248"></a>00248 {
<a name="l00249"></a>00249 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <span class="keywordtype">void</span> KSelectionOwner::filter_selection_request( XSelectionRequestEvent& ev_P )
<a name="l00253"></a>00253 {
<a name="l00254"></a>00254 <span class="keywordflow">if</span>( timestamp == CurrentTime || ev_P.selection != selection )
<a name="l00255"></a>00255 <span class="keywordflow">return</span>;
<a name="l00256"></a>00256 <span class="keywordflow">if</span>( ev_P.time != CurrentTime
<a name="l00257"></a>00257 && ev_P.time - timestamp > 1U << 31 )
<a name="l00258"></a>00258 <span class="keywordflow">return</span>; <span class="comment">// too old or too new request</span>
<a name="l00259"></a>00259 <span class="comment">// kdDebug() << "Got selection request" << endl;</span>
<a name="l00260"></a>00260 <span class="keywordtype">bool</span> handled = <span class="keyword">false</span>;
<a name="l00261"></a>00261 <span class="keywordflow">if</span>( ev_P.target == xa_multiple )
<a name="l00262"></a>00262 {
<a name="l00263"></a>00263 <span class="keywordflow">if</span>( ev_P.property != None )
<a name="l00264"></a>00264 {
<a name="l00265"></a>00265 <span class="keyword">const</span> <span class="keywordtype">int</span> MAX_ATOMS = 100; <span class="comment">// no need to handle more?</span>
<a name="l00266"></a>00266 <span class="keywordtype">int</span> format;
<a name="l00267"></a>00267 Atom type;
<a name="l00268"></a>00268 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> items;
<a name="l00269"></a>00269 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> after;
<a name="l00270"></a>00270 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* data;
<a name="l00271"></a>00271 <span class="keywordflow">if</span>( XGetWindowProperty( qt_xdisplay(), ev_P.requestor, ev_P.property, 0,
<a name="l00272"></a>00272 MAX_ATOMS, False, AnyPropertyType, &type, &format, &items, &after,
<a name="l00273"></a>00273 &data ) == Success && format == 32 && items % 2 == 0 )
<a name="l00274"></a>00274 {
<a name="l00275"></a>00275 <span class="keywordtype">bool</span> handled_array[ MAX_ATOMS ];
<a name="l00276"></a>00276 Atom* atoms = reinterpret_cast< Atom* >( data );
<a name="l00277"></a>00277 <span class="keywordflow">for</span>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0;
<a name="l00278"></a>00278 i < items / 2;
<a name="l00279"></a>00279 ++i )
<a name="l00280"></a>00280 handled_array[ i ] = handle_selection(
<a name="l00281"></a>00281 atoms[ i * 2 ], atoms[ i * 2 + 1 ], ev_P.requestor );
<a name="l00282"></a>00282 <span class="keywordtype">bool</span> all_handled = <span class="keyword">true</span>;
<a name="l00283"></a>00283 <span class="keywordflow">for</span>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0;
<a name="l00284"></a>00284 i < items / 2;
<a name="l00285"></a>00285 ++i )
<a name="l00286"></a>00286 <span class="keywordflow">if</span>( !handled_array[ i ] )
<a name="l00287"></a>00287 {
<a name="l00288"></a>00288 all_handled = <span class="keyword">false</span>;
<a name="l00289"></a>00289 atoms[ i * 2 + 1 ] = None;
<a name="l00290"></a>00290 }
<a name="l00291"></a>00291 <span class="keywordflow">if</span>( !all_handled )
<a name="l00292"></a>00292 XChangeProperty( qt_xdisplay(), ev_P.requestor, ev_P.property, XA_ATOM,
<a name="l00293"></a>00293 32, PropModeReplace, reinterpret_cast< unsigned char* >( atoms ), items );
<a name="l00294"></a>00294 handled = <span class="keyword">true</span>;
<a name="l00295"></a>00295 XFree( data );
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297 }
<a name="l00298"></a>00298 }
<a name="l00299"></a>00299 <span class="keywordflow">else</span>
<a name="l00300"></a>00300 {
<a name="l00301"></a>00301 <span class="keywordflow">if</span>( ev_P.property == None ) <span class="comment">// obsolete client</span>
<a name="l00302"></a>00302 ev_P.property = ev_P.target;
<a name="l00303"></a>00303 handled = handle_selection( ev_P.target, ev_P.property, ev_P.requestor );
<a name="l00304"></a>00304 }
<a name="l00305"></a>00305 XEvent ev;
<a name="l00306"></a>00306 ev.xselection.type = SelectionNotify;
<a name="l00307"></a>00307 ev.xselection.display = qt_xdisplay();
<a name="l00308"></a>00308 ev.xselection.requestor = ev_P.requestor;
<a name="l00309"></a>00309 ev.xselection.target = ev_P.target;
<a name="l00310"></a>00310 ev.xselection.property = handled ? ev_P.property : None;
<a name="l00311"></a>00311 XSendEvent( qt_xdisplay(), ev_P.requestor, False, 0, &ev );
<a name="l00312"></a>00312 }
<a name="l00313"></a>00313
<a name="l00314"></a>00314 <span class="keywordtype">bool</span> KSelectionOwner::handle_selection( Atom target_P, Atom property_P, Window requestor_P )
<a name="l00315"></a>00315 {
<a name="l00316"></a>00316 <span class="keywordflow">if</span>( target_P == xa_timestamp )
<a name="l00317"></a>00317 {
<a name="l00318"></a>00318 <span class="comment">// kdDebug() << "Handling timestamp request" << endl;</span>
<a name="l00319"></a>00319 XChangeProperty( qt_xdisplay(), requestor_P, property_P, XA_INTEGER, 32,
<a name="l00320"></a>00320 PropModeReplace, reinterpret_cast< unsigned char* >( &timestamp ), 1 );
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322 <span class="keywordflow">else</span> <span class="keywordflow">if</span>( target_P == xa_targets )
<a name="l00323"></a>00323 replyTargets( property_P, requestor_P );
<a name="l00324"></a>00324 <span class="keywordflow">else</span> <span class="keywordflow">if</span>( genericReply( target_P, property_P, requestor_P ))
<a name="l00325"></a>00325 ; <span class="comment">// handled</span>
<a name="l00326"></a>00326 <span class="keywordflow">else</span>
<a name="l00327"></a>00327 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// unknown</span>
<a name="l00328"></a>00328 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00329"></a>00329 }
<a name="l00330"></a>00330
<a name="l00331"></a>00331 <span class="keywordtype">void</span> KSelectionOwner::replyTargets( Atom property_P, Window requestor_P )
<a name="l00332"></a>00332 {
<a name="l00333"></a>00333 Atom atoms[ 3 ] = { xa_multiple, xa_timestamp, xa_targets };
<a name="l00334"></a>00334 <span class="comment">// kdDebug() << "Handling targets request" << endl;</span>
<a name="l00335"></a>00335 XChangeProperty( qt_xdisplay(), requestor_P, property_P, XA_ATOM, 32, PropModeReplace,
<a name="l00336"></a>00336 reinterpret_cast< unsigned char* >( atoms ), 3 );
<a name="l00337"></a>00337 }
<a name="l00338"></a>00338
<a name="l00339"></a>00339 <span class="keywordtype">bool</span> KSelectionOwner::genericReply( Atom, Atom, Window )
<a name="l00340"></a>00340 {
<a name="l00341"></a>00341 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343
<a name="l00344"></a>00344 <span class="keywordtype">void</span> KSelectionOwner::getAtoms()
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 <span class="keywordflow">if</span>( manager_atom == None )
<a name="l00347"></a>00347 {
<a name="l00348"></a>00348 Atom atoms[ 4 ];
<a name="l00349"></a>00349 <span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> names[] =
<a name="l00350"></a>00350 { <span class="stringliteral">"MANAGER"</span>, <span class="stringliteral">"MULTIPLE"</span>, <span class="stringliteral">"TARGETS"</span>, <span class="stringliteral">"TIMESTAMP"</span> };
<a name="l00351"></a>00351 XInternAtoms( qt_xdisplay(), const_cast< char** >( names ), 4, False, atoms );
<a name="l00352"></a>00352 manager_atom = atoms[ 0 ];
<a name="l00353"></a>00353 xa_multiple = atoms[ 1];
<a name="l00354"></a>00354 xa_targets = atoms[ 2 ];
<a name="l00355"></a>00355 xa_timestamp = atoms[ 3 ];
<a name="l00356"></a>00356 }
<a name="l00357"></a>00357 }
<a name="l00358"></a>00358
<a name="l00359"></a>00359 Atom KSelectionOwner::manager_atom = None;
<a name="l00360"></a>00360 Atom KSelectionOwner::xa_multiple = None;
<a name="l00361"></a>00361 Atom KSelectionOwner::xa_targets = None;
<a name="l00362"></a>00362 Atom KSelectionOwner::xa_timestamp = None;
<a name="l00363"></a>00363
<a name="l00364"></a>00364 <span class="comment">//*******************************************</span>
<a name="l00365"></a>00365 <span class="comment">// KSelectionWatcher</span>
<a name="l00366"></a>00366 <span class="comment">//*******************************************</span>
<a name="l00367"></a>00367
<a name="l00368"></a>00368
<a name="l00369"></a>00369 <span class="keyword">class </span>KSelectionWatcherPrivate
<a name="l00370"></a>00370 : <span class="keyword">public</span> <a class="codeRef" doxygen="qt.tag:" href="qwidget.html">QWidget</a>
<a name="l00371"></a>00371 {
<a name="l00372"></a>00372 <span class="keyword">public</span>:
<a name="l00373"></a>00373 KSelectionWatcherPrivate( KSelectionWatcher* watcher );
<a name="l00374"></a>00374 <span class="keyword">protected</span>:
<a name="l00375"></a>00375 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="codeRef" doxygen="qt.tag:" href="qwidget.html#x11Event">x11Event</a>( XEvent* ev );
<a name="l00376"></a>00376 <span class="keyword">private</span>:
<a name="l00377"></a>00377 KSelectionWatcher* watcher;
<a name="l00378"></a>00378 };
<a name="l00379"></a>00379
<a name="l00380"></a>00380 KSelectionWatcherPrivate::KSelectionWatcherPrivate( KSelectionWatcher* watcher_P )
<a name="l00381"></a>00381 : watcher( watcher_P )
<a name="l00382"></a>00382 {
<a name="l00383"></a>00383 kapp->installX11EventFilter( <span class="keyword">this</span> );
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385
<a name="l00386"></a>00386 <span class="keywordtype">bool</span> <a class="codeRef" doxygen="qt.tag:" href="qwidget.html#x11Event">KSelectionWatcherPrivate::x11Event</a>( XEvent* ev_P )
<a name="l00387"></a>00387 {
<a name="l00388"></a>00388 watcher->filterEvent( ev_P );
<a name="l00389"></a>00389 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00390"></a>00390 }
<a name="l00391"></a>00391
<a name="l00392"></a>00392
<a name="l00393"></a>00393 KSelectionWatcher::KSelectionWatcher( Atom selection_P, <span class="keywordtype">int</span> screen_P, <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>* parent_P )
<a name="l00394"></a>00394 : <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>( parent_P ),
<a name="l00395"></a>00395 selection( selection_P ),
<a name="l00396"></a>00396 screen( screen_P >= 0 ? screen_P : DefaultScreen( qt_xdisplay())),
<a name="l00397"></a>00397 selection_owner( None ),
<a name="l00398"></a>00398 d( new KSelectionWatcherPrivate( this ))
<a name="l00399"></a>00399 {
<a name="l00400"></a>00400 init();
<a name="l00401"></a>00401 }
<a name="l00402"></a>00402
<a name="l00403"></a>00403 KSelectionWatcher::KSelectionWatcher( <span class="keyword">const</span> <span class="keywordtype">char</span>* selection_P, <span class="keywordtype">int</span> screen_P, <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>* parent_P )
<a name="l00404"></a>00404 : <a class="codeRef" doxygen="qt.tag:" href="qobject.html">QObject</a>( parent_P ),
<a name="l00405"></a>00405 selection( XInternAtom( qt_xdisplay(), selection_P, False )),
<a name="l00406"></a>00406 screen( screen_P >= 0 ? screen_P : DefaultScreen( qt_xdisplay())),
<a name="l00407"></a>00407 selection_owner( None ),
<a name="l00408"></a>00408 d( new KSelectionWatcherPrivate( this ))
<a name="l00409"></a>00409 {
<a name="l00410"></a>00410 init();
<a name="l00411"></a>00411 }
<a name="l00412"></a>00412
<a name="l00413"></a>00413 KSelectionWatcher::~KSelectionWatcher()
<a name="l00414"></a>00414 {
<a name="l00415"></a>00415 <span class="keyword">delete</span> d;
<a name="l00416"></a>00416 }
<a name="l00417"></a>00417
<a name="l00418"></a>00418 <span class="keywordtype">void</span> KSelectionWatcher::init()
<a name="l00419"></a>00419 {
<a name="l00420"></a>00420 <span class="keywordflow">if</span>( manager_atom == None )
<a name="l00421"></a>00421 {
<a name="l00422"></a>00422 Display* <span class="keyword">const</span> dpy = qt_xdisplay();
<a name="l00423"></a>00423 manager_atom = XInternAtom( dpy, <span class="stringliteral">"MANAGER"</span>, False );
<a name="l00424"></a>00424 XWindowAttributes attrs;
<a name="l00425"></a>00425 XGetWindowAttributes( dpy, RootWindow( dpy, screen ), &attrs );
<a name="l00426"></a>00426 <span class="keywordtype">long</span> event_mask = attrs.your_event_mask;
<a name="l00427"></a>00427 <span class="comment">// StructureNotifyMask on the root window is needed</span>
<a name="l00428"></a>00428 XSelectInput( dpy, RootWindow( dpy, screen ), event_mask | StructureNotifyMask );
<a name="l00429"></a>00429 }
<a name="l00430"></a>00430 }
<a name="l00431"></a>00431
<a name="l00432"></a>00432 Window KSelectionWatcher::owner()
<a name="l00433"></a>00433 {
<a name="l00434"></a>00434 Display* <span class="keyword">const</span> dpy = qt_xdisplay();
<a name="l00435"></a>00435 <a class="code" href="classKXErrorHandler.html">KXErrorHandler</a> handler;
<a name="l00436"></a>00436 Window current_owner = XGetSelectionOwner( dpy, selection );
<a name="l00437"></a>00437 <span class="keywordflow">if</span>( current_owner == None )
<a name="l00438"></a>00438 <span class="keywordflow">return</span> None;
<a name="l00439"></a>00439 <span class="keywordflow">if</span>( current_owner == selection_owner )
<a name="l00440"></a>00440 <span class="keywordflow">return</span> selection_owner;
<a name="l00441"></a>00441 XSelectInput( dpy, current_owner, StructureNotifyMask );
<a name="l00442"></a>00442 <span class="keywordflow">if</span>( !handler.<a class="code" href="classKXErrorHandler.html#a3">error</a>( <span class="keyword">true</span> ) && current_owner == XGetSelectionOwner( dpy, selection ))
<a name="l00443"></a>00443 {
<a name="l00444"></a>00444 <span class="comment">// kdDebug() << "isOwner: " << current_owner << endl;</span>
<a name="l00445"></a>00445 selection_owner = current_owner;
<a name="l00446"></a>00446 emit newOwner( selection_owner );
<a name="l00447"></a>00447 }
<a name="l00448"></a>00448 <span class="keywordflow">else</span>
<a name="l00449"></a>00449 selection_owner = None;
<a name="l00450"></a>00450 <span class="keywordflow">return</span> selection_owner;
<a name="l00451"></a>00451 }
<a name="l00452"></a>00452
<a name="l00453"></a>00453 <span class="comment">// void return value in order to allow more watchers in one process</span>
<a name="l00454"></a>00454 <span class="keywordtype">void</span> KSelectionWatcher::filterEvent( XEvent* ev_P )
<a name="l00455"></a>00455 {
<a name="l00456"></a>00456 <span class="keywordflow">if</span>( ev_P->type == ClientMessage )
<a name="l00457"></a>00457 {
<a name="l00458"></a>00458 <span class="comment">// kdDebug() << "got ClientMessage" << endl;</span>
<a name="l00459"></a>00459 <span class="keywordflow">if</span>( ev_P->xclient.message_type != manager_atom
<a name="l00460"></a>00460 || ev_P->xclient.data.l[ 1 ] != static_cast< long >( selection ))
<a name="l00461"></a>00461 <span class="keywordflow">return</span>;
<a name="l00462"></a>00462 <span class="comment">// kdDebug() << "handling message" << endl;</span>
<a name="l00463"></a>00463 <span class="keywordflow">if</span>( static_cast< long >( owner()) == ev_P->xclient.data.l[ 2 ] )
<a name="l00464"></a>00464 {
<a name="l00465"></a>00465 <span class="comment">// owner() emits newOwner() if needed, no need to do it twice</span>
<a name="l00466"></a>00466 }
<a name="l00467"></a>00467 <span class="keywordflow">return</span>;
<a name="l00468"></a>00468 }
<a name="l00469"></a>00469 <span class="keywordflow">if</span>( ev_P->type == DestroyNotify )
<a name="l00470"></a>00470 {
<a name="l00471"></a>00471 <span class="keywordflow">if</span>( selection_owner == None || ev_P->xdestroywindow.window != selection_owner )
<a name="l00472"></a>00472 <span class="keywordflow">return</span>;
<a name="l00473"></a>00473 selection_owner = None; <span class="comment">// in case the exactly same ID gets reused as the owner</span>
<a name="l00474"></a>00474 <span class="keywordflow">if</span>( owner() == None )
<a name="l00475"></a>00475 emit lostOwner(); <span class="comment">// it must be safe to delete 'this' in a slot</span>
<a name="l00476"></a>00476 <span class="keywordflow">return</span>;
<a name="l00477"></a>00477 }
<a name="l00478"></a>00478 <span class="keywordflow">return</span>;
<a name="l00479"></a>00479 }
<a name="l00480"></a>00480
<a name="l00481"></a>00481 Atom KSelectionWatcher::manager_atom = None;
<a name="l00482"></a>00482
<a name="l00483"></a>00483 <span class="keywordtype">void</span> KSelectionOwner::virtual_hook( <span class="keywordtype">int</span>, <span class="keywordtype">void</span>* )
<a name="l00484"></a>00484 { <span class="comment">/*BASE::virtual_hook( id, data );*/</span> }
<a name="l00485"></a>00485
<a name="l00486"></a>00486 <span class="keywordtype">void</span> KSelectionWatcher::virtual_hook( <span class="keywordtype">int</span>, <span class="keywordtype">void</span>* )
<a name="l00487"></a>00487 { <span class="comment">/*BASE::virtual_hook( id, data );*/</span> }
<a name="l00488"></a>00488
<a name="l00489"></a>00489 <span class="preprocessor">#include "kmanagerselection.moc"</span>
<a name="l00490"></a>00490 <span class="preprocessor">#endif</span>
</pre></div> </div></div>
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