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Diffstat (limited to 'sd/source/ui/remotecontrol/ImagePreparer.cxx')
| -rw-r--r-- | sd/source/ui/remotecontrol/ImagePreparer.cxx | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/sd/source/ui/remotecontrol/ImagePreparer.cxx b/sd/source/ui/remotecontrol/ImagePreparer.cxx new file mode 100644 index 000000000..ba8d2c1f3 --- /dev/null +++ b/sd/source/ui/remotecontrol/ImagePreparer.cxx @@ -0,0 +1,255 @@ +/* -*- 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 "ImagePreparer.hxx" +#include "Transmitter.hxx" + +#include <comphelper/base64.hxx> +#include <comphelper/processfactory.hxx> +#include <comphelper/propertyvalue.hxx> +#include <osl/file.hxx> +#include <rtl/ustrbuf.hxx> +#include <sal/log.hxx> + +#include <com/sun/star/beans/PropertyValue.hpp> +#include <com/sun/star/drawing/GraphicExportFilter.hpp> +#include <com/sun/star/lang/XServiceName.hpp> +#include <com/sun/star/presentation/XSlideShowController.hpp> +#include <com/sun/star/presentation/XPresentationPage.hpp> +#include <com/sun/star/text/XTextRange.hpp> + +using namespace ::sd; +using namespace ::osl; +using namespace ::com::sun::star; +using namespace ::com::sun::star::uno; + +ImagePreparer::ImagePreparer( + const uno::Reference<presentation::XSlideShowController>& rxController, + Transmitter *aTransmitter ) + : Timer("sd ImagePreparer"), + xController( rxController ), + pTransmitter( aTransmitter ) +{ + SAL_INFO( "sdremote", "ImagePreparer - start" ); + SetTimeout( 50 ); + mnSendingSlide = 0; + Start(); +} + +ImagePreparer::~ImagePreparer() +{ + SAL_INFO( "sdremote", "ImagePreparer - stop" ); + Stop(); +} + +void ImagePreparer::Invoke() +{ + sal_uInt32 aSlides = xController->getSlideCount(); + SAL_INFO( "sdremote", "ImagePreparer " << xController->isRunning() << + " sending slide " << mnSendingSlide << " of " << aSlides ); + if ( xController->isRunning() && // not stopped/disposed of. + mnSendingSlide < aSlides ) + { + sendPreview( mnSendingSlide ); + sendNotes( mnSendingSlide ); + mnSendingSlide++; + Start(); + } + else + Stop(); +} + +void ImagePreparer::sendPreview( sal_uInt32 aSlideNumber ) +{ + sal_uInt64 aSize; + uno::Sequence<sal_Int8> aImageData = preparePreview( aSlideNumber, 320, 240, + aSize ); + if ( !xController->isRunning() ) + return; + + OUStringBuffer aStrBuffer; + ::comphelper::Base64::encode( aStrBuffer, aImageData ); + + OString aEncodedShortString = OUStringToOString( + aStrBuffer.makeStringAndClear(), RTL_TEXTENCODING_UTF8 ); + + // Start the writing + OString aBuffer = "slide_preview\n" + + OString::number(aSlideNumber) + + "\n" + aEncodedShortString + "\n\n"; + pTransmitter->addMessage( aBuffer, + Transmitter::PRIORITY_LOW ); + +} + +uno::Sequence<sal_Int8> ImagePreparer::preparePreview( + sal_uInt32 aSlideNumber, sal_uInt32 aWidth, sal_uInt32 aHeight, + sal_uInt64 &rSize ) +{ + OUString aFileURL; + FileBase::createTempFile( nullptr, nullptr, &aFileURL ); + + uno::Reference< drawing::XGraphicExportFilter > xFilter = + drawing::GraphicExportFilter::create( ::comphelper::getProcessComponentContext() ); + + if ( !xController->isRunning() ) + return uno::Sequence<sal_Int8>(); + + uno::Reference< lang::XComponent > xSourceDoc( + xController->getSlideByIndex( aSlideNumber ), + uno::UNO_QUERY_THROW ); + + xFilter->setSourceDocument( xSourceDoc ); + + uno::Sequence< beans::PropertyValue > aFilterData{ + comphelper::makePropertyValue("PixelWidth", aWidth), + comphelper::makePropertyValue("PixelHeight", aHeight), + comphelper::makePropertyValue("ColorMode", sal_Int32(0)) // 0: Color, 1: B&W + }; + + uno::Sequence< beans::PropertyValue > aProps{ + comphelper::makePropertyValue("MediaType", OUString( "image/png" )), + comphelper::makePropertyValue("URL", aFileURL), + comphelper::makePropertyValue("FilterData", aFilterData) + }; + + xFilter->filter( aProps ); + + File aFile(aFileURL); + if (aFile.open(0) != osl::File::E_None) + return uno::Sequence<sal_Int8>(); + + sal_uInt64 aRead; + rSize = 0; + aFile.getSize( rSize ); + uno::Sequence<sal_Int8> aContents( rSize ); + + aFile.read( aContents.getArray(), rSize, aRead ); + if (aRead != rSize) + aContents.realloc(aRead); + + aFile.close(); + File::remove( aFileURL ); + return aContents; + +} + +void ImagePreparer::sendNotes( sal_uInt32 aSlideNumber ) +{ + + OString aNotes = prepareNotes( aSlideNumber ); + + if ( aNotes.isEmpty() ) + return; + + if ( !xController->isRunning() ) + return; + + // Start the writing + OString aBuffer = + "slide_notes\n" + + OString::number( static_cast<sal_Int32>(aSlideNumber) ) + + "\n" + "<html><body>" + + aNotes + + "</body></html>" + "\n\n"; + pTransmitter->addMessage( aBuffer, + Transmitter::PRIORITY_LOW ); +} + +// Code copied from sdremote/source/presenter/PresenterNotesView.cxx +OString ImagePreparer::prepareNotes( sal_uInt32 aSlideNumber ) +{ + OUStringBuffer aRet; + + if ( !xController->isRunning() ) + return ""; + + uno::Reference<css::drawing::XDrawPage> aNotesPage; + uno::Reference< drawing::XDrawPage > xSourceDoc( + xController->getSlideByIndex( aSlideNumber ), + uno::UNO_SET_THROW ); + uno::Reference<presentation::XPresentationPage> xPresentationPage( + xSourceDoc, UNO_QUERY); + if (xPresentationPage.is()) + aNotesPage = xPresentationPage->getNotesPage(); + else + return ""; + + static constexpr OUStringLiteral sNotesShapeName ( + u"com.sun.star.presentation.NotesShape" ); + static constexpr OUStringLiteral sTextShapeName ( + u"com.sun.star.drawing.TextShape" ); + + if (aNotesPage.is()) + { + + // Iterate over all shapes and find the one that holds the text. + sal_Int32 nCount (aNotesPage->getCount()); + for (sal_Int32 nIndex=0; nIndex<nCount; ++nIndex) + { + + uno::Reference<lang::XServiceName> xServiceName ( + aNotesPage->getByIndex(nIndex), UNO_QUERY); + if (xServiceName.is() + && xServiceName->getServiceName() == sNotesShapeName) + { + uno::Reference<text::XTextRange> xText (xServiceName, UNO_QUERY); + if (xText.is()) + { + aRet.append(xText->getString()); + aRet.append("<br/>"); + } + } + else + { + uno::Reference<drawing::XShapeDescriptor> xShapeDescriptor ( + aNotesPage->getByIndex(nIndex), UNO_QUERY); + if (xShapeDescriptor.is()) + { + OUString sType (xShapeDescriptor->getShapeType()); + if (sType == sNotesShapeName || sType == sTextShapeName) + { + uno::Reference<text::XTextRange> xText ( + aNotesPage->getByIndex(nIndex), UNO_QUERY); + if (xText.is()) + { + aRet.append(xText->getString()); + aRet.append("<br/>"); + } + } + } + } + } + } + // Replace all newlines with <br\> tags + for ( sal_Int32 i = 0; i < aRet.getLength(); i++ ) + { + if ( aRet[i] == '\n' ) + { + aRet[i]= '<'; + aRet.insert( i+1, "br/>" ); + } + } + return OUStringToOString( + aRet.makeStringAndClear(), RTL_TEXTENCODING_UTF8 ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |