1 files changed, 491 insertions, 0 deletions
diff --git a/forms/source/component/imgprod.cxx b/forms/source/component/imgprod.cxx
new file mode 100644
index 000000000..a7435f2b6
--- /dev/null
+++ b/forms/source/component/imgprod.cxx
@@ -0,0 +1,491 @@
+/* -*- 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 "imgprod.hxx"
+
+#include <osl/diagnose.h>
+#include <tools/debug.hxx>
+#include <vcl/bitmapaccess.hxx>
+#include <vcl/cvtgrf.hxx>
+#include <vcl/svapp.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+#include <cppuhelper/queryinterface.hxx>
+#include <com/sun/star/awt/ImageStatus.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+
+#include <svtools/imageresourceaccess.hxx>
+#include <comphelper/processfactory.hxx>
+
+namespace {
+
+class ImgProdLockBytes : public SvLockBytes
+{
+    css::uno::Reference< css::io::XInputStream >      xStmRef;
+    css::uno::Sequence<sal_Int8>                      maSeq;
+
+public:
+
+    ImgProdLockBytes( SvStream* pStm, bool bOwner );
+    explicit ImgProdLockBytes( css::uno::Reference< css::io::XInputStream > const & rStreamRef );
+
+    virtual ErrCode     ReadAt( sal_uInt64 nPos, void* pBuffer, std::size_t nCount, std::size_t * pRead ) const override;
+    virtual ErrCode     WriteAt( sal_uInt64 nPos, const void* pBuffer, std::size_t nCount, std::size_t * pWritten ) override;
+    virtual ErrCode     Flush() const override;
+    virtual ErrCode     SetSize( sal_uInt64 nSize ) override;
+    virtual ErrCode     Stat( SvLockBytesStat* ) const override;
+};
+
+}
+
+ImgProdLockBytes::ImgProdLockBytes( SvStream* pStm, bool bOwner ) :
+        SvLockBytes( pStm, bOwner )
+{
+}
+
+
+ImgProdLockBytes::ImgProdLockBytes( css::uno::Reference< css::io::XInputStream > const & rStmRef ) :
+        xStmRef( rStmRef )
+{
+    if( !xStmRef.is() )
+        return;
+
+    const sal_uInt32    nBytesToRead = 65535;
+    sal_uInt32          nRead;
+
+    do
+    {
+        css::uno::Sequence< sal_Int8 > aReadSeq;
+
+        nRead = xStmRef->readSomeBytes( aReadSeq, nBytesToRead );
+
+        if( nRead )
+        {
+            const sal_uInt32 nOldLength = maSeq.getLength();
+            maSeq.realloc( nOldLength + nRead );
+            memcpy( maSeq.getArray() + nOldLength, aReadSeq.getConstArray(), aReadSeq.getLength() );
+        }
+    }
+    while( nBytesToRead == nRead );
+}
+
+ErrCode ImgProdLockBytes::ReadAt(sal_uInt64 const nPos,
+        void* pBuffer, std::size_t nCount, std::size_t * pRead) const
+{
+    if( GetStream() )
+    {
+        const_cast<SvStream*>(GetStream())->ResetError();
+        const ErrCode nErr = SvLockBytes::ReadAt( nPos, pBuffer, nCount, pRead );
+        const_cast<SvStream*>(GetStream())->ResetError();
+        return nErr;
+    }
+    else
+    {
+        const std::size_t nSeqLen = maSeq.getLength();
+
+        if( nPos < nSeqLen )
+        {
+            if( ( nPos + nCount ) > nSeqLen )
+                nCount = nSeqLen - nPos;
+
+            memcpy( pBuffer, maSeq.getConstArray() + nPos, nCount );
+            *pRead = nCount;
+        }
+        else
+            *pRead = 0;
+
+        return ERRCODE_NONE;
+    }
+}
+
+
+ErrCode ImgProdLockBytes::WriteAt(sal_uInt64 const nPos,
+        const void* pBuffer, std::size_t nCount, std::size_t * pWritten)
+{
+    if( GetStream() )
+        return SvLockBytes::WriteAt( nPos, pBuffer, nCount, pWritten );
+    else
+    {
+        DBG_ASSERT( xStmRef.is(), "ImgProdLockBytes::WriteAt: xInputStream has no reference..." );
+        return ERRCODE_IO_CANTWRITE;
+    }
+}
+
+
+ErrCode ImgProdLockBytes::Flush() const
+{
+    return ERRCODE_NONE;
+}
+
+
+ErrCode ImgProdLockBytes::SetSize(sal_uInt64 const nSize)
+{
+    if( GetStream() )
+        return SvLockBytes::SetSize( nSize );
+    else
+    {
+        OSL_FAIL( "ImgProdLockBytes::SetSize not supported for xInputStream..." );
+        return ERRCODE_IO_CANTWRITE;
+    }
+}
+
+
+ErrCode ImgProdLockBytes::Stat( SvLockBytesStat* pStat ) const
+{
+    if( GetStream() )
+        return SvLockBytes::Stat( pStat );
+    else
+    {
+        DBG_ASSERT( xStmRef.is(), "ImgProdLockBytes::Stat: xInputStream has no reference..." );
+        pStat->nSize = maSeq.getLength();
+        return ERRCODE_NONE;
+    }
+}
+
+
+ImageProducer::ImageProducer()
+    : mnTransIndex(0)
+    , mbConsInit(false)
+{
+    mpGraphic.reset( new Graphic );
+}
+
+ImageProducer::~ImageProducer()
+{
+}
+
+
+// XInterface
+css::uno::Any ImageProducer::queryInterface( const css::uno::Type & rType )
+{
+    css::uno::Any aRet = ::cppu::queryInterface( rType,
+                                        static_cast< css::lang::XInitialization* >(this),
+                                        static_cast< css::awt::XImageProducer* >(this) );
+    return (aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType ));
+}
+
+
+void ImageProducer::addConsumer( const css::uno::Reference< css::awt::XImageConsumer >& rxConsumer )
+{
+    DBG_ASSERT( rxConsumer.is(), "::AddConsumer(...): No consumer referenced!" );
+    if( rxConsumer.is() )
+        maConsList.push_back( rxConsumer );
+}
+
+
+void ImageProducer::removeConsumer( const css::uno::Reference< css::awt::XImageConsumer >& rxConsumer )
+{
+    ConsumerList_t::reverse_iterator riter = std::find(maConsList.rbegin(),maConsList.rend(),rxConsumer);
+
+    if (riter != maConsList.rend())
+        maConsList.erase(riter.base()-1);
+}
+
+
+void ImageProducer::SetImage( const OUString& rPath )
+{
+    maURL = rPath;
+    mpGraphic->Clear();
+    mbConsInit = false;
+    mpStm.reset();
+
+    if ( ::svt::GraphicAccess::isSupportedURL( maURL ) )
+    {
+        mpStm = ::svt::GraphicAccess::getImageStream( ::comphelper::getProcessComponentContext(), maURL );
+    }
+    else if( !maURL.isEmpty() )
+    {
+        std::unique_ptr<SvStream> pIStm = ::utl::UcbStreamHelper::CreateStream( maURL, StreamMode::STD_READ );
+        if (pIStm)
+            mpStm.reset( new SvStream( new ImgProdLockBytes( pIStm.release(), true ) ) );
+    }
+}
+
+
+void ImageProducer::SetImage( SvStream& rStm )
+{
+    maURL.clear();
+    mpGraphic->Clear();
+    mbConsInit = false;
+
+    mpStm.reset( new SvStream( new ImgProdLockBytes( &rStm, false ) ) );
+}
+
+
+void ImageProducer::setImage( css::uno::Reference< css::io::XInputStream > const & rInputStmRef )
+{
+    maURL.clear();
+    mpGraphic->Clear();
+    mbConsInit = false;
+    mpStm.reset();
+
+    if( rInputStmRef.is() )
+        mpStm.reset( new SvStream( new ImgProdLockBytes( rInputStmRef ) ) );
+}
+
+
+void ImageProducer::NewDataAvailable()
+{
+    if( ( GraphicType::NONE == mpGraphic->GetType() ) || mpGraphic->GetReaderContext() )
+        startProduction();
+}
+
+
+void ImageProducer::startProduction()
+{
+    if( !(!maConsList.empty() || maDoneHdl.IsSet()) )
+        return;
+
+    bool bNotifyEmptyGraphics = false;
+
+    // valid stream or filled graphic? => update consumers
+    if( mpStm || ( mpGraphic->GetType() != GraphicType::NONE ) )
+    {
+        // if we already have a graphic, we don't have to import again;
+        // graphic is cleared if a new Stream is set
+        if( ( mpGraphic->GetType() == GraphicType::NONE ) || mpGraphic->GetReaderContext() )
+        {
+            if ( ImplImportGraphic( *mpGraphic ) )
+                maDoneHdl.Call( mpGraphic.get() );
+        }
+
+        if( mpGraphic->GetType() != GraphicType::NONE )
+            ImplUpdateData( *mpGraphic );
+        else
+            bNotifyEmptyGraphics = true;
+    }
+    else
+        bNotifyEmptyGraphics = true;
+
+    if ( !bNotifyEmptyGraphics )
+        return;
+
+    // reset image
+    // create temporary list to hold interfaces
+    ConsumerList_t aTmp = maConsList;
+
+    // iterate through interfaces
+    for (auto const& elem : aTmp)
+    {
+        elem->init( 0, 0 );
+        elem->complete( css::awt::ImageStatus::IMAGESTATUS_STATICIMAGEDONE, this );
+    }
+
+    maDoneHdl.Call( nullptr );
+}
+
+
+bool ImageProducer::ImplImportGraphic( Graphic& rGraphic )
+{
+    if (!mpStm)
+        return false;
+
+    if( ERRCODE_IO_PENDING == mpStm->GetError() )
+        mpStm->ResetError();
+
+    mpStm->Seek( 0 );
+
+    bool bRet = GraphicConverter::Import( *mpStm, rGraphic ) == ERRCODE_NONE;
+
+    if( ERRCODE_IO_PENDING == mpStm->GetError() )
+        mpStm->ResetError();
+
+    return bRet;
+}
+
+
+void ImageProducer::ImplUpdateData( const Graphic& rGraphic )
+{
+    ImplInitConsumer( rGraphic );
+
+    if( mbConsInit && !maConsList.empty() )
+    {
+        // create temporary list to hold interfaces
+        ConsumerList_t aTmp = maConsList;
+
+        ImplUpdateConsumer( rGraphic );
+        mbConsInit = false;
+
+        // iterate through interfaces
+        for (auto const& elem : aTmp)
+            elem->complete( css::awt::ImageStatus::IMAGESTATUS_STATICIMAGEDONE, this );
+    }
+}
+
+
+void ImageProducer::ImplInitConsumer( const Graphic& rGraphic )
+{
+    sal_uInt32 nRMask = 0;
+    sal_uInt32 nGMask = 0;
+    sal_uInt32 nBMask = 0;
+    sal_uInt32 nAMask = 0;
+    sal_uInt32 nWidth = 0;
+    sal_uInt32 nHeight = 0;
+    sal_uInt8 nBitCount = 0;
+    css::uno::Sequence< sal_Int32 > aRGBPal;
+    rGraphic.GetBitmapEx().GetColorModel(aRGBPal, nRMask, nGMask, nBMask, nAMask, mnTransIndex, nWidth, nHeight, nBitCount);
+
+    // create temporary list to hold interfaces
+    ConsumerList_t aTmp = maConsList;
+
+    // iterate through interfaces
+    for (auto const& elem : aTmp)
+    {
+        elem->init( nWidth, nHeight );
+        elem->setColorModel( nBitCount,aRGBPal, nRMask, nGMask, nBMask, nAMask );
+    }
+
+    mbConsInit = true;
+}
+
+
+void ImageProducer::ImplUpdateConsumer( const Graphic& rGraphic )
+{
+    BitmapEx            aBmpEx( rGraphic.GetBitmapEx() );
+    Bitmap              aBmp( aBmpEx.GetBitmap() );
+    BitmapReadAccess*   pBmpAcc = aBmp.AcquireReadAccess();
+
+    if( !pBmpAcc )
+        return;
+
+    Bitmap              aMask( aBmpEx.GetMask() );
+    BitmapReadAccess*   pMskAcc = !!aMask ? aMask.AcquireReadAccess() : nullptr;
+    const long          nWidth = pBmpAcc->Width();
+    const long          nHeight = pBmpAcc->Height();
+    const long          nStartX = 0;
+    const long          nEndX = nWidth - 1;
+    const long          nStartY = 0;
+    const long          nEndY = nHeight - 1;
+    const long          nPartWidth = nEndX - nStartX + 1;
+    const long          nPartHeight = nEndY - nStartY + 1;
+
+    if( !pMskAcc )
+    {
+        aMask = Bitmap( aBmp.GetSizePixel(), 1 );
+        aMask.Erase( COL_BLACK );
+        pMskAcc = aMask.AcquireReadAccess();
+    }
+
+    // create temporary list to hold interfaces
+    ConsumerList_t aTmp = maConsList;
+
+    if( pBmpAcc->HasPalette() )
+    {
+        const BitmapColor aWhite( pMskAcc->GetBestMatchingColor( COL_WHITE ) );
+
+        if( mnTransIndex < 256 )
+        {
+            css::uno::Sequence<sal_Int8>   aData( nPartWidth * nPartHeight );
+            sal_Int8*                                   pTmp = aData.getArray();
+
+            for( long nY = nStartY; nY <= nEndY; nY++ )
+            {
+                Scanline pScanlineMask = pMskAcc->GetScanline( nY );
+                Scanline pScanline = pBmpAcc->GetScanline( nY );
+                for( long nX = nStartX; nX <= nEndX; nX++ )
+                {
+                    if( pMskAcc->GetPixelFromData( pScanlineMask, nX ) == aWhite )
+                        *pTmp++ = sal::static_int_cast< sal_Int8 >(
+                            mnTransIndex );
+                    else
+                        *pTmp++ = pBmpAcc->GetPixelFromData( pScanline, nX ).GetIndex();
+                }
+            }
+
+            // iterate through interfaces
+            for (auto const& elem : aTmp)
+                elem->setPixelsByBytes( nStartX, nStartY, nPartWidth, nPartHeight, aData, 0UL, nPartWidth );
+        }
+        else
+        {
+            css::uno::Sequence<sal_Int32>  aData( nPartWidth * nPartHeight );
+            sal_Int32*                                  pTmp = aData.getArray();
+
+            for( long nY = nStartY; nY <= nEndY; nY++ )
+            {
+                Scanline pScanlineMask = pMskAcc->GetScanline( nY );
+                Scanline pScanline = pBmpAcc->GetScanline( nY );
+                for( long nX = nStartX; nX <= nEndX; nX++ )
+                {
+                    if( pMskAcc->GetPixelFromData( pScanlineMask, nX ) == aWhite )
+                        *pTmp++ = mnTransIndex;
+                    else
+                        *pTmp++ = pBmpAcc->GetPixelFromData( pScanline, nX ).GetIndex();
+                }
+            }
+
+            // iterate through interfaces
+            for (auto const& elem : aTmp)
+                elem->setPixelsByLongs( nStartX, nStartY, nPartWidth, nPartHeight, aData, 0UL, nPartWidth );
+        }
+    }
+    else
+    {
+        css::uno::Sequence<sal_Int32>  aData( nPartWidth * nPartHeight );
+        const BitmapColor                           aWhite( pMskAcc->GetBestMatchingColor( COL_WHITE ) );
+        sal_Int32*                                  pTmp = aData.getArray();
+
+        for( long nY = nStartY; nY <= nEndY; nY++ )
+        {
+            Scanline pScanlineMask = pMskAcc->GetScanline( nY );
+            Scanline pScanline = pBmpAcc->GetScanline( nY );
+            for( long nX = nStartX; nX <= nEndX; nX++, pTmp++ )
+            {
+                const BitmapColor aCol( pBmpAcc->GetPixelFromData( pScanline, nX ) );
+
+                *pTmp = static_cast<sal_Int32>(aCol.GetRed()) << 24;
+                *pTmp |= static_cast<sal_Int32>(aCol.GetGreen()) << 16;
+                *pTmp |= static_cast<sal_Int32>(aCol.GetBlue()) << 8;
+
+                if( pMskAcc->GetPixelFromData( pScanlineMask, nX ) != aWhite )
+                    *pTmp |= 0x000000ffUL;
+            }
+        }
+
+        // iterate through interfaces
+        for (auto const& elem : aTmp)
+            elem->setPixelsByLongs( nStartX, nStartY, nPartWidth, nPartHeight, aData, 0UL, nPartWidth );
+    }
+
+    Bitmap::ReleaseAccess( pBmpAcc );
+    Bitmap::ReleaseAccess( pMskAcc );
+}
+
+
+void ImageProducer::initialize( const css::uno::Sequence< css::uno::Any >& aArguments )
+{
+    if ( aArguments.getLength() == 1 )
+    {
+        css::uno::Any aArg = aArguments.getConstArray()[0];
+        OUString aURL;
+        if ( aArg >>= aURL )
+        {
+            SetImage( aURL );
+        }
+    }
+}
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_form_ImageProducer_get_implementation(css::uno::XComponentContext*,
+        css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new ImageProducer());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */