Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 214 insertions, 0 deletions

diff --git a/kdecore/kxmessages.cpp b/kdecore/kxmessages.cpp
new file mode 100644
index 000000000..b730c73a7
--- /dev/null
+++ b/kdecore/kxmessages.cpp
@@ -0,0 +1,214 @@
+/****************************************************************************
+
+ $Id$
+
+ 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