generic: factor out generic display code, reducing cut+paste+bug

1 files changed, 155 insertions, 0 deletions

diff --git a/vcl/generic/app/gendisp.cxx b/vcl/generic/app/gendisp.cxx
new file mode 100644
index 000000000000..e22835bb2687
--- /dev/null
+++ b/vcl/generic/app/gendisp.cxx
@@ -0,0 +1,155 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+// MARKER(update_precomp.py): autogen include statement, do not remove
+#include "precompiled_vcl.hxx"
+
+#include <salframe.hxx>
+#include <generic/gendisp.hxx>
+#include <generic/geninst.h>
+
+using ::rtl::OUString;
+
+SalGenericDisplay::SalGenericDisplay()
+{
+    m_pCapture = NULL;
+    m_aEventGuard = osl_createMutex();
+}
+
+SalGenericDisplay::~SalGenericDisplay()
+{
+    if (m_aEventGuard)
+        osl_destroyMutex( m_aEventGuard );
+    m_aEventGuard = NULL;
+}
+
+void SalGenericDisplay::registerFrame( SalFrame* pFrame )
+{
+    m_aFrames.push_front( pFrame );
+}
+
+void SalGenericDisplay::deregisterFrame( SalFrame* pFrame )
+{
+    if( osl_acquireMutex( m_aEventGuard ) )
+    {
+        std::list< SalUserEvent >::iterator it = m_aUserEvents.begin();
+        while ( it != m_aUserEvents.end() )
+        {
+            if( it->m_pFrame == pFrame )
+                it = m_aUserEvents.erase( it );
+            else
+                ++it;
+        }
+        osl_releaseMutex( m_aEventGuard );
+    }
+    else
+        OSL_FAIL( "SalGenericDisplay::deregisterFrame !acquireMutex\n" );
+
+    m_aFrames.remove( pFrame );
+}
+
+bool SalGenericDisplay::DispatchInternalEvent()
+{
+    void* pData = NULL;
+    SalFrame* pFrame = NULL;
+    sal_uInt16 nEvent = 0;
+
+    if( osl_acquireMutex( m_aEventGuard ) )
+    {
+        if( m_aUserEvents.begin() != m_aUserEvents.end() )
+        {
+            pFrame	= m_aUserEvents.front().m_pFrame;
+            pData	= m_aUserEvents.front().m_pData;
+            nEvent	= m_aUserEvents.front().m_nEvent;
+
+            m_aUserEvents.pop_front();
+        }
+        osl_releaseMutex( m_aEventGuard );
+    }
+    else
+        OSL_FAIL( "SalGenericDisplay::Yield !acquireMutex\n" );
+
+    if( pFrame )
+        pFrame->CallCallback( nEvent, pData );
+
+    return pFrame != NULL;
+}
+
+void SalGenericDisplay::SendInternalEvent( SalFrame* pFrame, void* pData, sal_uInt16 nEvent )
+{
+    if( osl_acquireMutex( m_aEventGuard ) )
+    {
+        m_aUserEvents.push_back( SalUserEvent( pFrame, pData, nEvent ) );
+
+        PostUserEvent(); // wakeup the concrete mainloop
+
+        osl_releaseMutex( m_aEventGuard );
+    }
+    else
+        OSL_FAIL( "SalGenericDisplay::SendInternalEvent !acquireMutex\n" );
+}
+
+void SalGenericDisplay::CancelInternalEvent( SalFrame* pFrame, void* pData, sal_uInt16 nEvent )
+{
+    if( osl_acquireMutex( m_aEventGuard ) )
+    {
+        if( ! m_aUserEvents.empty() )
+        {
+            std::list< SalUserEvent >::iterator it, next;
+            next = m_aUserEvents.begin();
+            do
+            {
+                it = next++;
+                if( it->m_pFrame    == pFrame   &&
+                    it->m_pData     == pData    &&
+                    it->m_nEvent    == nEvent )
+                {
+                    m_aUserEvents.erase( it );
+                }
+            } while( next != m_aUserEvents.end() );
+        }
+
+        osl_releaseMutex( m_aEventGuard );
+    }
+    else
+        OSL_FAIL( "SalGenericDisplay::CancelInternalEvent !acquireMutex\n" );
+}
+
+bool SalGenericDisplay::HasUserEvents() const
+{
+    bool bRet = false;
+    if( osl_acquireMutex( m_aEventGuard ) )
+    {
+        if( m_aUserEvents.begin() != m_aUserEvents.end() )
+            bRet = true;
+        osl_releaseMutex( m_aEventGuard );
+    }
+    return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */