vcl/unx/kde4/KDESalDisplay.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "KDESalDisplay.hxx"
  21
  22 #include "KDEXLib.hxx"
  23 #include "VCLKDEApplication.hxx"
  24
  25 #include <assert.h>
  26 #include <unx/saldata.hxx>
  27
  28 SalKDEDisplay* SalKDEDisplay::selfptr = NULL;
  29
  30 SalKDEDisplay::SalKDEDisplay( Display* pDisp )
  31     : SalX11Display( pDisp )
  32 {
  33     assert( selfptr == NULL );
  34     selfptr = this;
  35     xim_protocol = XInternAtom( pDisp_, "_XIM_PROTOCOL", False );
  36 }
  37
  38 SalKDEDisplay::~SalKDEDisplay()
  39 {
  40     // in case never a frame opened
  41     static_cast<KDEXLib*>(GetXLib())->doStartup();
  42     // clean up own members
  43     doDestruct();
  44     selfptr = NULL;
  45     // prevent SalDisplay from closing KApplication's display
  46     pDisp_ = NULL;
  47 }
  48
  49 void SalKDEDisplay::Yield()
  50 {
  51     if( DispatchInternalEvent() )
  52         return;
  53
  54     // Prevent blocking from Drag'n'Drop events, which may have already have processed the event
  55     if (XEventsQueued( pDisp_, QueuedAfterReading ) == 0)
  56         return;
  57
  58     DBG_ASSERT( static_cast<SalYieldMutex*>(GetSalData()->m_pInstance->GetYieldMutex())->GetThreadId() ==
  59                 osl::Thread::getCurrentIdentifier(),
  60                 "will crash soon since solar mutex not locked in SalKDEDisplay::Yield" );
  61
  62     XEvent event;
  63     XNextEvent( pDisp_, &event );
  64     if( checkDirectInputEvent( &event ))
  65         return;
  66     qApp->x11ProcessEvent( &event );
  67 }
  68
  69 // HACK: When using Qt event loop, input methods (japanese, etc.) will get broken because
  70 // of XFilterEvent() getting called twice, once by Qt, once by LO (bnc#665112).
  71 // This function is therefore called before any XEvent is passed to Qt event handling
  72 // and if it is a keyboard event and no Qt widget is the active window (i.e. we are
  73 // processing events for some LO window), then feed the event only to LO directly and skip Qt
  74 // completely. Skipped events are KeyPress, KeyRelease and also _XIM_PROTOCOL client message
  75 // (seems to be necessary too, hopefully there are not other internal XIM messages that
  76 // would need this handling).
  77 bool SalKDEDisplay::checkDirectInputEvent( XEvent* ev )
  78 {
  79     if( ev->xany.type == KeyPress || ev->xany.type == KeyRelease
  80         || ( ev->xany.type == ClientMessage && ev->xclient.message_type == xim_protocol ))
  81     {
  82         if( QApplication::activeWindow() == NULL )
  83         {
  84             Dispatch(ev);
  85             return true;
  86         }
  87     }
  88     return false;
  89 }
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */