1 files changed, 352 insertions, 0 deletions
diff --git a/vcl/unx/gtk/app/gtkinst.cxx b/vcl/unx/gtk/app/gtkinst.cxx
new file mode 100644
index 000000000000..68617c8c16be
--- /dev/null
+++ b/vcl/unx/gtk/app/gtkinst.cxx
@@ -0,0 +1,352 @@
+/*************************************************************************
+ *
+ * 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 <osl/module.h>
+#include <plugins/gtk/gtkdata.hxx>
+#include <plugins/gtk/gtkinst.hxx>
+#include <salframe.h>
+#include <salobj.h>
+#include <plugins/gtk/gtkframe.hxx>
+#include <plugins/gtk/gtkobject.hxx>
+#include <plugins/gtk/atkbridge.hxx>
+
+#include <rtl/strbuf.hxx>
+
+#if OSL_DEBUG_LEVEL > 1
+#include <stdio.h>
+#endif
+
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+GtkHookedYieldMutex::GtkHookedYieldMutex()
+{
+}
+
+/*
+ * These methods always occur in pairs
+ * A ThreadsEnter is followed by a ThreadsLeave
+ * We need to queue up the recursive lock count
+ * for each pair, so we can accurately restore
+ * it later.
+ */
+void GtkHookedYieldMutex::ThreadsEnter()
+{
+    acquire();
+    if( !aYieldStack.empty() )
+    { /* Previously called ThreadsLeave() */
+        ULONG nCount = aYieldStack.front();
+        aYieldStack.pop_front();
+        while( nCount-- > 1 )
+            acquire();
+    }
+}
+
+void GtkHookedYieldMutex::ThreadsLeave()
+{
+    aYieldStack.push_front( mnCount );
+
+#if OSL_DEBUG_LEVEL > 1
+    if( mnThreadId &&
+        mnThreadId != NAMESPACE_VOS(OThread)::getCurrentIdentifier())
+        fprintf( stderr, "\n\n--- A different thread owns the mutex ...---\n\n\n");
+#endif
+
+    while( mnCount > 1 )
+        release();
+    release();
+}
+
+void GtkHookedYieldMutex::acquire()
+{
+    SalYieldMutex::acquire();
+}
+
+void GtkHookedYieldMutex::release()
+{
+    SalYieldMutex::release();
+}
+
+extern "C"
+{
+    #define GET_YIELD_MUTEX() static_cast<GtkHookedYieldMutex*>(GetSalData()->m_pInstance->GetYieldMutex())
+    static void GdkThreadsEnter( void )
+    {
+        GtkHookedYieldMutex *pYieldMutex = GET_YIELD_MUTEX();
+        pYieldMutex->ThreadsEnter();
+    }
+    static void GdkThreadsLeave( void )
+    {
+        GtkHookedYieldMutex *pYieldMutex = GET_YIELD_MUTEX();
+        pYieldMutex->ThreadsLeave();
+    }
+    static bool hookLocks( oslModule pModule )
+    {
+        typedef void (*GdkLockFn) (GCallback enter_fn, GCallback leave_fn);
+
+        GdkLockFn gdk_threads_set_lock_functions =
+                (GdkLockFn) osl_getAsciiFunctionSymbol( pModule, "gdk_threads_set_lock_functions" );
+        if ( !gdk_threads_set_lock_functions )
+        {
+#if OSL_DEBUG_LEVEL > 1
+            fprintf( stderr, "Failed to hook gdk threads locks\n" );
+#endif
+            return false;
+        }
+
+        gdk_threads_set_lock_functions (GdkThreadsEnter, GdkThreadsLeave);
+#if OSL_DEBUG_LEVEL > 1
+        fprintf( stderr, "Hooked gdk threads locks\n" );
+#endif
+        return true;
+    }
+
+    VCL_DLLPUBLIC SalInstance* create_SalInstance( oslModule pModule )
+    {
+        /* #i92121# workaround deadlocks in the X11 implementation
+        */
+        static const char* pNoXInitThreads = getenv( "SAL_NO_XINITTHREADS" );
+        /* #i90094#
+           from now on we know that an X connection will be
+           established, so protect X against itself
+        */
+        if( ! ( pNoXInitThreads && *pNoXInitThreads ) )
+            XInitThreads();
+
+        const gchar* pVersion = gtk_check_version( 2, 2, 0 );
+        if( pVersion )
+        {
+#if OSL_DEBUG_LEVEL > 1
+            fprintf( stderr, "gtk version conflict: %s\n", pVersion );
+#endif
+            return NULL;
+        }
+
+        GtkYieldMutex *pYieldMutex;
+
+        // init gdk thread protection
+        if ( !g_thread_supported() )
+            g_thread_init( NULL );
+
+        if ( hookLocks( pModule ) )
+            pYieldMutex = new GtkHookedYieldMutex();
+        else
+            pYieldMutex = new GtkYieldMutex();
+
+        gdk_threads_init();
+
+        GtkInstance* pInstance = new GtkInstance( pYieldMutex );
+#if OSL_DEBUG_LEVEL > 1
+        fprintf( stderr, "creating GtkSalInstance 0x%p\n", pInstance );
+#endif
+
+        // initialize SalData
+        GtkData *pSalData = new GtkData();
+        SetSalData( pSalData );
+        pSalData->m_pInstance = pInstance;
+        pSalData->Init();
+        pSalData->initNWF();
+
+        InitAtkBridge();
+
+        return pInstance;
+    }
+}
+
+GtkInstance::~GtkInstance()
+{
+    DeInitAtkBridge();
+}
+
+SalFrame* GtkInstance::CreateFrame( SalFrame* pParent, ULONG nStyle )
+{
+    return new GtkSalFrame( pParent, nStyle );
+}
+
+SalFrame* GtkInstance::CreateChildFrame( SystemParentData* pParentData, ULONG )
+{
+    SalFrame* pFrame = new GtkSalFrame( pParentData );
+
+    return pFrame;
+}
+
+SalObject* GtkInstance::CreateObject( SalFrame* pParent, SystemWindowData* pWindowData, BOOL bShow )
+{
+    // there is no method to set a visual for a GtkWidget
+    // so we need the X11SalObject in that case
+    if( pWindowData )
+        return X11SalObject::CreateObject( pParent, pWindowData, bShow );
+
+    return new GtkSalObject( static_cast<GtkSalFrame*>(pParent), bShow );
+}
+
+extern "C"
+{
+    typedef void*(* getDefaultFnc)();
+    typedef void(* addItemFnc)(void *, const char *);
+}
+
+void GtkInstance::AddToRecentDocumentList(const rtl::OUString& rFileUrl, const rtl::OUString& rMimeType)
+{
+#if GTK_CHECK_VERSION(2,10,0)
+    GtkRecentManager *manager = gtk_recent_manager_get_default ();
+    gtk_recent_manager_add_item (manager, rtl::OUStringToOString(rFileUrl, RTL_TEXTENCODING_UTF8).getStr());
+    (void)rMimeType;
+#else
+    static getDefaultFnc sym_gtk_recent_manager_get_default =
+        (getDefaultFnc)osl_getAsciiFunctionSymbol( GetSalData()->m_pPlugin, "gtk_recent_manager_get_default" );
+
+    static addItemFnc sym_gtk_recent_manager_add_item =
+        (addItemFnc)osl_getAsciiFunctionSymbol( GetSalData()->m_pPlugin, "gtk_recent_manager_add_item");
+    if (sym_gtk_recent_manager_get_default && sym_gtk_recent_manager_add_item)
+    {
+        sym_gtk_recent_manager_add_item(sym_gtk_recent_manager_get_default(),
+            rtl::OUStringToOString(rFileUrl, RTL_TEXTENCODING_UTF8).getStr());
+    }
+    else
+        X11SalInstance::AddToRecentDocumentList(rFileUrl, rMimeType);
+#endif
+}
+
+GtkYieldMutex::GtkYieldMutex()
+{
+}
+
+void GtkYieldMutex::acquire()
+{
+    vos::OThread::TThreadIdentifier aCurrentThread = vos::OThread::getCurrentIdentifier();
+    // protect member manipulation
+    OMutex::acquire();
+    if( mnCount > 0 && mnThreadId == aCurrentThread )
+    {
+        mnCount++;
+        OMutex::release();
+        return;
+    }
+    OMutex::release();
+
+    // obtain gdk mutex
+    gdk_threads_enter();
+
+    // obtained gdk mutex, now lock count is one by definition
+    OMutex::acquire();
+    mnCount = 1;
+    mnThreadId = aCurrentThread;
+    OMutex::release();
+}
+
+void GtkYieldMutex::release()
+{
+    vos::OThread::TThreadIdentifier aCurrentThread = vos::OThread::getCurrentIdentifier();
+    // protect member manipulation
+    OMutex::acquire();
+    // strange things happen, do nothing if we don't own the mutex
+    if( mnThreadId == aCurrentThread )
+    {
+        mnCount--;
+        if( mnCount == 0 )
+        {
+            gdk_threads_leave();
+            mnThreadId = 0;
+        }
+    }
+    OMutex::release();
+}
+
+sal_Bool GtkYieldMutex::tryToAcquire()
+{
+    vos::OThread::TThreadIdentifier aCurrentThread = vos::OThread::getCurrentIdentifier();
+    // protect member manipulation
+    OMutex::acquire();
+    if( mnCount > 0 )
+    {
+        if( mnThreadId == aCurrentThread )
+        {
+            mnCount++;
+            OMutex::release();
+            return sal_True;
+        }
+        else
+        {
+            OMutex::release();
+            return sal_False;
+        }
+    }
+    OMutex::release();
+
+    // HACK: gdk_threads_mutex is private, we shouldn't use it.
+    // how to we do a try_lock without having a gdk_threads_try_enter ?
+    if( ! g_mutex_trylock( gdk_threads_mutex ) )
+        return sal_False;
+
+    // obtained gdk mutex, now lock count is one by definition
+    OMutex::acquire();
+    mnCount = 1;
+    mnThreadId = aCurrentThread;
+    OMutex::release();
+
+    return sal_True;
+}
+
+int GtkYieldMutex::Grab()
+{
+    // this MUST only be called by gdk/gtk callbacks:
+    // they are entered with gdk mutex locked; the mutex
+    // was unlocked by GtkYieldMutex befor yielding which
+    // is now locked again by gtk implicitly
+
+    // obtained gdk mutex, now lock count is one by definition
+    OMutex::acquire();
+    int nRet = mnCount;
+    if( mnCount == 0 ) // recursive else
+        mnThreadId = vos::OThread::getCurrentIdentifier();
+#if OSL_DEBUG_LEVEL > 1
+    else if( mnThreadId != vos::OThread::getCurrentIdentifier() )
+    {
+        fprintf( stderr, "Yield mutex grabbed in different thread !\n" );
+        abort();
+    }
+#endif
+    mnCount = 1;
+    OMutex::release();
+    return nRet;
+}
+
+void GtkYieldMutex::Ungrab( int nGrabs )
+{
+    // this MUST only be called when leaving the callback
+    // that locked the mutex with Grab()
+    OMutex::acquire();
+    mnCount = nGrabs;
+    if( mnCount == 0 )
+        mnThreadId = 0;
+    OMutex::release();
+}