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-rw-r--r--kdecore/kxmessages.cpp214
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diff --git a/kdecore/kxmessages.cpp b/kdecore/kxmessages.cpp
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+/****************************************************************************
+
+ $Id$
+
+ Copyright (C) 2001-2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+****************************************************************************/
+
+#include "kxmessages.h"
+
+#include <kapplication.h>
+
+#ifdef Q_WS_X11 // FIXME(E): Figure out what parts we can/should emulate in QT/E
+
+#include <X11/Xlib.h>
+#include <kdebug.h>
+
+// for broadcasting
+const long BROADCAST_MASK = PropertyChangeMask;
+// CHECKME
+
+KXMessages::KXMessages( const char* accept_broadcast_P, QWidget* parent_P )
+ : QWidget( parent_P )
+ {
+ if( accept_broadcast_P != NULL )
+ {
+ ( void ) kapp->desktop(); //trigger desktop widget creation to select root window events
+ kapp->installX11EventFilter( this ); // i.e. PropertyChangeMask
+ accept_atom1 = XInternAtom( qt_xdisplay(), accept_broadcast_P, false );
+ accept_atom2 = accept_atom1;
+ }
+ else
+ {
+ accept_atom1 = accept_atom2 = None;
+ }
+ handle = new QWidget( this );
+ }
+
+KXMessages::KXMessages( const char* accept_broadcast_P, QWidget* parent_P, bool obsolete_P )
+ : QWidget( parent_P )
+ {
+ if( accept_broadcast_P != NULL )
+ {
+ ( void ) kapp->desktop(); //trigger desktop widget creation to select root window events
+ kapp->installX11EventFilter( this ); // i.e. PropertyChangeMask
+ accept_atom2 = XInternAtom( qt_xdisplay(), accept_broadcast_P, false );
+ accept_atom1 = obsolete_P ? accept_atom2
+ : XInternAtom( qt_xdisplay(), QCString( accept_broadcast_P ) + "_BEGIN", false );
+ }
+ else
+ {
+ accept_atom1 = accept_atom2 = None;
+ }
+ handle = new QWidget( this );
+ }
+
+KXMessages::~KXMessages()
+ {
+// delete d; no private data yet
+ }
+
+
+void KXMessages::broadcastMessage( const char* msg_type_P, const QString& message_P )
+ {
+ broadcastMessage( msg_type_P, message_P, -1, true );
+ }
+
+void KXMessages::broadcastMessage( const char* msg_type_P, const QString& message_P,
+ int screen_P, bool obsolete_P )
+ {
+ Atom a2 = XInternAtom( qt_xdisplay(), msg_type_P, false );
+ Atom a1 = obsolete_P ? a2 : XInternAtom( qt_xdisplay(), QCString( msg_type_P ) + "_BEGIN", false );
+ Window root = screen_P == -1 ? qt_xrootwin() : qt_xrootwin( screen_P );
+ send_message_internal( root, message_P, BROADCAST_MASK, qt_xdisplay(),
+ a1, a2, handle->winId());
+ }
+
+void KXMessages::sendMessage( WId w_P, const char* msg_type_P, const QString& message_P )
+ {
+ sendMessage( w_P, msg_type_P, message_P, true );
+ }
+
+void KXMessages::sendMessage( WId w_P, const char* msg_type_P, const QString& message_P,
+ bool obsolete_P )
+ {
+ Atom a2 = XInternAtom( qt_xdisplay(), msg_type_P, false );
+ Atom a1 = obsolete_P ? a2 : XInternAtom( qt_xdisplay(), QCString( msg_type_P ) + "_BEGIN", false );
+ send_message_internal( w_P, message_P, 0, qt_xdisplay(), a1, a2, handle->winId());
+ }
+
+bool KXMessages::broadcastMessageX( Display* disp, const char* msg_type_P,
+ const QString& message_P )
+ {
+ return broadcastMessageX( disp, msg_type_P, message_P, -1, true );
+ }
+
+bool KXMessages::broadcastMessageX( Display* disp, const char* msg_type_P,
+ const QString& message_P, int screen_P, bool obsolete_P )
+ {
+ if( disp == NULL )
+ return false;
+ Atom a2 = XInternAtom( disp, msg_type_P, false );
+ Atom a1 = obsolete_P ? a2 : XInternAtom( disp, QCString( msg_type_P ) + "_BEGIN", false );
+ Window root = screen_P == -1 ? DefaultRootWindow( disp ) : RootWindow( disp, screen_P );
+ Window win = XCreateSimpleWindow( disp, root, 0, 0, 1, 1,
+ 0, BlackPixel( disp, screen_P == -1 ? DefaultScreen( disp ) : screen_P ),
+ BlackPixel( disp, screen_P == -1 ? DefaultScreen( disp ) : screen_P ));
+ send_message_internal( root, message_P, BROADCAST_MASK, disp,
+ a1, a2, win );
+ XDestroyWindow( disp, win );
+ return true;
+ }
+
+bool KXMessages::sendMessageX( Display* disp, WId w_P, const char* msg_type_P,
+ const QString& message_P )
+ {
+ return sendMessageX( disp, w_P, msg_type_P, message_P, true );
+ }
+
+bool KXMessages::sendMessageX( Display* disp, WId w_P, const char* msg_type_P,
+ const QString& message_P, bool obsolete_P )
+ {
+ if( disp == NULL )
+ return false;
+ Atom a2 = XInternAtom( disp, msg_type_P, false );
+ Atom a1 = obsolete_P ? a2 : XInternAtom( disp, QCString( msg_type_P ) + "_BEGIN", false );
+ Window win = XCreateSimpleWindow( disp, DefaultRootWindow( disp ), 0, 0, 1, 1,
+ 0, BlackPixelOfScreen( DefaultScreenOfDisplay( disp )),
+ BlackPixelOfScreen( DefaultScreenOfDisplay( disp )));
+ send_message_internal( w_P, message_P, 0, disp, a1, a2, win );
+ XDestroyWindow( disp, win );
+ return true;
+ }
+
+void KXMessages::send_message_internal( WId w_P, const QString& msg_P, long mask_P,
+ Display* disp, Atom atom1_P, Atom atom2_P, Window handle_P )
+ {
+ unsigned int pos = 0;
+ QCString msg = msg_P.utf8();
+ unsigned int len = strlen( msg );
+ XEvent e;
+ e.xclient.type = ClientMessage;
+ e.xclient.message_type = atom1_P; // leading message
+ e.xclient.display = disp;
+ e.xclient.window = handle_P;
+ e.xclient.format = 8;
+ do
+ {
+ unsigned int i;
+ for( i = 0;
+ i < 20 && i + pos <= len;
+ ++i )
+ e.xclient.data.b[ i ] = msg[ i + pos ];
+ XSendEvent( disp, w_P, false, mask_P, &e );
+ e.xclient.message_type = atom2_P; // following messages
+ pos += i;
+ } while( pos <= len );
+ XFlush( disp );
+ }
+
+bool KXMessages::x11Event( XEvent* ev_P )
+ {
+ if( ev_P->type != ClientMessage || ev_P->xclient.format != 8 )
+ return QWidget::x11Event( ev_P );
+ if( ev_P->xclient.message_type != accept_atom1 && ev_P->xclient.message_type != accept_atom2 )
+ return QWidget::x11Event( ev_P );
+ char buf[ 21 ]; // can't be longer
+ int i;
+ for( i = 0;
+ i < 20 && ev_P->xclient.data.b[ i ] != '\0';
+ ++i )
+ buf[ i ] = ev_P->xclient.data.b[ i ];
+ buf[ i ] = '\0';
+ if( incoming_messages.contains( ev_P->xclient.window ))
+ {
+ if( ev_P->xclient.message_type == accept_atom1 && accept_atom1 != accept_atom2 )
+ // two different messages on the same window at the same time shouldn't happen anyway
+ incoming_messages[ ev_P->xclient.window ] = QCString();
+ incoming_messages[ ev_P->xclient.window ] += buf;
+ }
+ else
+ {
+ if( ev_P->xclient.message_type == accept_atom2 && accept_atom1 != accept_atom2 )
+ return false; // middle of message, but we don't have the beginning
+ incoming_messages[ ev_P->xclient.window ] = buf;
+ }
+ if( i < 20 ) // last message fragment
+ {
+ emit gotMessage( QString::fromUtf8( incoming_messages[ ev_P->xclient.window ] ));
+ incoming_messages.remove( ev_P->xclient.window );
+ }
+ return false; // lets other KXMessages instances get the event too
+ }
+
+#include "kxmessages.moc"
+#endif
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