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