Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 341 insertions, 0 deletions

diff --git a/extensions/source/scanner/scanunx.cxx b/extensions/source/scanner/scanunx.cxx
new file mode 100644
index 000000000..b06e30a27
--- /dev/null
+++ b/extensions/source/scanner/scanunx.cxx
@@ -0,0 +1,341 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "scanner.hxx"
+#include "sanedlg.hxx"
+#include <o3tl/safeint.hxx>
+#include <osl/thread.hxx>
+#include <sal/log.hxx>
+#include <vcl/svapp.hxx>
+#include <memory>
+
+#include <com/sun/star/scanner/ScannerException.hpp>
+
+BitmapTransporter::BitmapTransporter()
+{
+    SAL_INFO("extensions.scanner", "BitmapTransporter");
+}
+
+
+BitmapTransporter::~BitmapTransporter()
+{
+    SAL_INFO("extensions.scanner", "~BitmapTransporter");
+}
+
+
+css::awt::Size BitmapTransporter::getSize()
+{
+    osl::MutexGuard aGuard( m_aProtector );
+    css::awt::Size   aRet;
+
+    // ensure that there is at least a header
+    int nLen = m_aStream.TellEnd();
+    if( nLen > 15 )
+    {
+        int nPreviousPos = m_aStream.Tell();
+        m_aStream.Seek( 4 );
+        m_aStream.ReadInt32( aRet.Width ).ReadInt32( aRet.Height );
+        m_aStream.Seek( nPreviousPos );
+    }
+    else
+        aRet.Width = aRet.Height = 0;
+
+
+    return aRet;
+}
+
+
+Sequence< sal_Int8 > BitmapTransporter::getDIB()
+{
+    osl::MutexGuard aGuard( m_aProtector );
+    int         nPreviousPos = m_aStream.Tell();
+
+    // create return value
+    int nBytes = m_aStream.TellEnd();
+    m_aStream.Seek( 0 );
+
+    Sequence< sal_Int8 > aValue( nBytes );
+    m_aStream.ReadBytes( aValue.getArray(), nBytes );
+    m_aStream.Seek( nPreviousPos );
+
+    return aValue;
+}
+
+namespace {
+
+struct SaneHolder
+{
+    Sane                m_aSane;
+    Reference< css::awt::XBitmap > m_xBitmap;
+    osl::Mutex          m_aProtector;
+    ScanError           m_nError;
+    bool                m_bBusy;
+
+    SaneHolder() : m_nError(ScanError_ScanErrorNone), m_bBusy(false) {}
+};
+
+    typedef std::vector< std::shared_ptr<SaneHolder> > sanevec;
+    class allSanes
+    {
+    private:
+        int mnRefCount;
+    public:
+        sanevec m_aSanes;
+        allSanes() : mnRefCount(0) {}
+        void acquire();
+        void release();
+    };
+
+    void allSanes::acquire()
+    {
+        ++mnRefCount;
+    }
+
+    void allSanes::release()
+    {
+        // was unused, now because of i99835: "Scanning interface not SANE API
+        // compliant" destroy all SaneHolder to get Sane Dtor called
+        --mnRefCount;
+        if (!mnRefCount)
+            m_aSanes.clear();
+    }
+
+    struct theSaneProtector : public rtl::Static<osl::Mutex, theSaneProtector> {};
+    struct theSanes : public rtl::Static<allSanes, theSanes> {};
+
+class ScannerThread : public osl::Thread
+{
+    std::shared_ptr<SaneHolder>               m_pHolder;
+    Reference< css::lang::XEventListener >    m_xListener;
+    ScannerManager*                           m_pManager; // just for the disposing call
+
+public:
+    virtual void SAL_CALL run() override;
+    virtual void SAL_CALL onTerminated() override { delete this; }
+public:
+    ScannerThread( const std::shared_ptr<SaneHolder>& pHolder,
+                   const Reference< css::lang::XEventListener >& listener,
+                   ScannerManager* pManager );
+    virtual ~ScannerThread() override;
+};
+
+}
+
+ScannerThread::ScannerThread(const std::shared_ptr<SaneHolder>& pHolder,
+                             const Reference< css::lang::XEventListener >& listener,
+                             ScannerManager* pManager)
+        : m_pHolder( pHolder ), m_xListener( listener ), m_pManager( pManager )
+{
+    SAL_INFO("extensions.scanner", "ScannerThread");
+}
+
+
+ScannerThread::~ScannerThread()
+{
+    SAL_INFO("extensions.scanner", "~ScannerThread");
+}
+
+
+void ScannerThread::run()
+{
+    osl_setThreadName("ScannerThread");
+
+    osl::MutexGuard         aGuard( m_pHolder->m_aProtector );
+    rtl::Reference<BitmapTransporter> pTransporter = new BitmapTransporter;
+
+    m_pHolder->m_xBitmap = pTransporter;
+
+    m_pHolder->m_bBusy = true;
+    if( m_pHolder->m_aSane.IsOpen() )
+    {
+        int nOption = m_pHolder->m_aSane.GetOptionByName( "preview" );
+        if( nOption != -1 )
+            m_pHolder->m_aSane.SetOptionValue( nOption, false );
+
+        m_pHolder->m_nError =
+            m_pHolder->m_aSane.Start( *pTransporter ) ?
+            ScanError_ScanErrorNone : ScanError_ScanCanceled;
+    }
+    else
+        m_pHolder->m_nError = ScanError_ScannerNotAvailable;
+
+
+    Reference< XInterface > xXInterface( static_cast< OWeakObject* >( m_pManager ) );
+    m_xListener->disposing( css::lang::EventObject(xXInterface) );
+    m_pHolder->m_bBusy = false;
+}
+
+
+void ScannerManager::AcquireData()
+{
+    osl::MutexGuard aGuard( theSaneProtector::get() );
+    theSanes::get().acquire();
+}
+
+
+void ScannerManager::ReleaseData()
+{
+    osl::MutexGuard aGuard( theSaneProtector::get() );
+    theSanes::get().release();
+}
+
+
+css::awt::Size ScannerManager::getSize()
+{
+    css::awt::Size aRet;
+    aRet.Width = aRet.Height = 0;
+    return aRet;
+}
+
+
+Sequence< sal_Int8 > ScannerManager::getDIB()
+{
+    return Sequence< sal_Int8 >();
+}
+
+
+Sequence< ScannerContext > ScannerManager::getAvailableScanners()
+{
+    osl::MutexGuard aGuard( theSaneProtector::get() );
+    sanevec &rSanes = theSanes::get().m_aSanes;
+
+    if( rSanes.empty() )
+    {
+        auto pSaneHolder = std::make_shared<SaneHolder>();
+        if( Sane::IsSane() )
+            rSanes.push_back( pSaneHolder );
+    }
+
+    if( Sane::IsSane() )
+    {
+        Sequence< ScannerContext > aRet{ { /* ScannerName */ "SANE", /* InternalData */ 0 } };
+        return aRet;
+    }
+
+    return Sequence< ScannerContext >();
+}
+
+
+sal_Bool ScannerManager::configureScannerAndScan( ScannerContext& scanner_context,
+                                                  const Reference< css::lang::XEventListener >& listener )
+{
+    bool bRet;
+    bool bScan;
+    {
+        osl::MutexGuard aGuard( theSaneProtector::get() );
+        sanevec &rSanes = theSanes::get().m_aSanes;
+
+        SAL_INFO("extensions.scanner", "ScannerManager::configureScanner");
+
+        if( scanner_context.InternalData < 0 || o3tl::make_unsigned(scanner_context.InternalData) >= rSanes.size() )
+            throw ScannerException(
+                "Scanner does not exist",
+                Reference< XScannerManager >( this ),
+                ScanError_InvalidContext
+            );
+
+        std::shared_ptr<SaneHolder> pHolder = rSanes[scanner_context.InternalData];
+        if( pHolder->m_bBusy )
+            throw ScannerException(
+                "Scanner is busy",
+                Reference< XScannerManager >( this ),
+                ScanError_ScanInProgress
+            );
+
+        pHolder->m_bBusy = true;
+        SaneDlg aDlg(Application::GetFrameWeld(mxDialogParent), pHolder->m_aSane, listener.is());
+        bRet = aDlg.run();
+        bScan = aDlg.getDoScan();
+        pHolder->m_bBusy = false;
+    }
+    if ( bScan )
+        startScan( scanner_context, listener );
+
+    return bRet;
+}
+
+
+void ScannerManager::startScan( const ScannerContext& scanner_context,
+                                const Reference< css::lang::XEventListener >& listener )
+{
+    osl::MutexGuard aGuard( theSaneProtector::get() );
+    sanevec &rSanes = theSanes::get().m_aSanes;
+
+    SAL_INFO("extensions.scanner", "ScannerManager::startScan");
+
+    if( scanner_context.InternalData < 0 || o3tl::make_unsigned(scanner_context.InternalData) >= rSanes.size() )
+        throw ScannerException(
+            "Scanner does not exist",
+            Reference< XScannerManager >( this ),
+            ScanError_InvalidContext
+            );
+    std::shared_ptr<SaneHolder> pHolder = rSanes[scanner_context.InternalData];
+    if( pHolder->m_bBusy )
+        throw ScannerException(
+            "Scanner is busy",
+            Reference< XScannerManager >( this ),
+            ScanError_ScanInProgress
+            );
+    pHolder->m_bBusy = true;
+
+    ScannerThread* pThread = new ScannerThread( pHolder, listener, this );
+    pThread->create();
+}
+
+
+ScanError ScannerManager::getError( const ScannerContext& scanner_context )
+{
+    osl::MutexGuard aGuard( theSaneProtector::get() );
+    sanevec &rSanes = theSanes::get().m_aSanes;
+
+    if( scanner_context.InternalData < 0 || o3tl::make_unsigned(scanner_context.InternalData) >= rSanes.size() )
+        throw ScannerException(
+            "Scanner does not exist",
+            Reference< XScannerManager >( this ),
+            ScanError_InvalidContext
+            );
+
+    std::shared_ptr<SaneHolder> pHolder = rSanes[scanner_context.InternalData];
+
+    return pHolder->m_nError;
+}
+
+
+Reference< css::awt::XBitmap > ScannerManager::getBitmap( const ScannerContext& scanner_context )
+{
+    osl::MutexGuard aGuard( theSaneProtector::get() );
+    sanevec &rSanes = theSanes::get().m_aSanes;
+
+    if( scanner_context.InternalData < 0 || o3tl::make_unsigned(scanner_context.InternalData) >= rSanes.size() )
+        throw ScannerException(
+            "Scanner does not exist",
+            Reference< XScannerManager >( this ),
+            ScanError_InvalidContext
+            );
+    std::shared_ptr<SaneHolder> pHolder = rSanes[scanner_context.InternalData];
+
+    osl::MutexGuard aProtGuard( pHolder->m_aProtector );
+
+    Reference< css::awt::XBitmap > xRet( pHolder->m_xBitmap );
+    pHolder->m_xBitmap.clear();
+
+    return xRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */