Implemented Thumbnail activity.

Change-Id: I I6de8651f3ed36798ca1cc69765c448b821a819a2

5 files changed, 218 insertions, 2 deletions

diff --git a/sd/source/ui/remotecontrol/ImagePreparer.cxx b/sd/source/ui/remotecontrol/ImagePreparer.cxx
new file mode 100644
index 000000000000..a42be1f5c135
--- /dev/null
+++ b/sd/source/ui/remotecontrol/ImagePreparer.cxx
@@ -0,0 +1,154 @@
+/* -*- 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/.
+ */
+
+#include "ImagePreparer.hxx"
+
+#include <comphelper/processfactory.hxx>
+#include <osl/file.hxx>
+#include <xmlsec/base64.h>
+#include <rtl/ustrbuf.hxx>
+#include <sax/tools/converter.hxx>
+#include <rtl/strbuf.hxx>
+
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <com/sun/star/document/XFilter.hpp>
+#include <com/sun/star/document/XExporter.hpp>
+
+using namespace sd;
+using namespace rtl;
+using namespace osl;
+using namespace ::com::sun::star;
+
+ImagePreparer::ImagePreparer(
+    const uno::Reference<presentation::XSlideShowController>& rxController,
+    Transmitter *aTransmitter, rtl::Reference<ImagePreparer>& rRef )
+ :  Thread( "ImagePreparer Thread" ),
+    xController( rxController ),
+    pTransmitter( aTransmitter ),
+    mRef( rRef )
+{
+}
+
+ImagePreparer::~ImagePreparer()
+{
+}
+
+void ImagePreparer::execute()
+{
+    fprintf( stderr, "ImagePreparer running\n" );
+    sal_uInt32 aSlides = xController->getSlideCount();
+    for ( sal_uInt32 i = 0; i < aSlides; i++ )
+    {
+        if ( !xController->isRunning() ) // stopped/disposed of.
+        {
+            break;
+        }
+        sendPreview( i );
+    }
+    fprintf( stderr, "ImagePreparer done\n" );
+    mRef.clear();
+}
+
+void ImagePreparer::sendPreview( sal_uInt32 aSlideNumber )
+{
+    sal_uInt64 aSize;
+    uno::Sequence<sal_Int8> aImageData = preparePreview( aSlideNumber, 160, 120,
+        aSize );
+    if ( !xController->isRunning() )
+        return;
+
+    OUStringBuffer aStrBuffer;
+    ::sax::Converter::encodeBase64( aStrBuffer, aImageData );
+
+    OString aEncodedShortString = OUStringToOString(
+        aStrBuffer.makeStringAndClear(), RTL_TEXTENCODING_UTF8 );
+
+    // Start the writing
+    OStringBuffer aBuffer;
+
+    aBuffer.append( "slide_preview\n" );
+
+    aBuffer.append( OString::valueOf( sal_Int32( aSlideNumber ) ).getStr() );
+    aBuffer.append( "\n" );
+
+    aBuffer.append( aEncodedShortString.getStr() );
+    aBuffer.append( "\n\n" );
+    pTransmitter->addMessage( aBuffer.makeStringAndClear(),
+        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( 0, 0, &aFileURL );
+
+    uno::Reference< lang::XMultiServiceFactory > xServiceManager(
+        ::comphelper::getProcessServiceFactory(),
+        uno::UNO_QUERY_THROW );
+
+    uno::Reference< document::XFilter > xFilter(
+        xServiceManager->createInstance(
+        "com.sun.star.drawing.GraphicExportFilter" ) ,
+        uno::UNO_QUERY_THROW );
+
+    uno::Reference< document::XExporter > xExporter( xFilter,
+        uno::UNO_QUERY_THROW );
+
+    if ( !xController->isRunning() )
+        return uno::Sequence<sal_Int8>();
+    uno::Reference< lang::XComponent > xSourceDoc(
+        xController->getSlideByIndex( aSlideNumber ),
+        uno::UNO_QUERY_THROW );
+
+    xExporter->setSourceDocument( xSourceDoc );
+
+    uno::Sequence< beans::PropertyValue > aFilterData(3);
+
+    aFilterData[0].Name = "PixelWidth";
+    aFilterData[0].Value <<= aWidth;
+
+    aFilterData[1].Name = "PixelHeight";
+    aFilterData[1].Value <<= aHeight;
+
+    aFilterData[2].Name = "ColorMode";
+    aFilterData[2].Value <<= sal_Int32(0); // 0: Color, 1: B&W
+
+    uno::Sequence< beans::PropertyValue > aProps(3);
+
+    aProps[0].Name = "MediaType";
+    aProps[0].Value <<= OUString( "image/png" );
+
+    aProps[1].Name = "URL";
+    aProps[1].Value <<= aFileURL;
+
+    aProps[2].Name = "FilterData";
+    aProps[2].Value <<= aFilterData;
+
+    xFilter->filter( aProps );
+
+    // FIXME: error handling.
+
+    File aFile( aFileURL );
+    aFile.open(0);
+    sal_uInt64 aRead;
+    rSize = 0;
+    aFile.getSize( rSize );
+    uno::Sequence<sal_Int8> aContents( rSize );
+
+    aFile.read( aContents.getArray(), rSize, aRead );
+    aFile.close();
+    File::remove( aFileURL );
+    return aContents;
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
\ No newline at end of file
diff --git a/sd/source/ui/remotecontrol/ImagePreparer.hxx b/sd/source/ui/remotecontrol/ImagePreparer.hxx
new file mode 100644
index 000000000000..7f193bb91fec
--- /dev/null
+++ b/sd/source/ui/remotecontrol/ImagePreparer.hxx
@@ -0,0 +1,51 @@
+/* -*- 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/.
+ */
+#ifndef _SD_IMPRESSREMOTE_IMAGEPREPARER_HXX
+#define _SD_IMPRESSREMOTE_IMAGEPREPARER_HXX
+
+#include <salhelper/thread.hxx>
+#include <rtl/ref.hxx>
+
+#include <com/sun/star/presentation/XSlideShowController.hpp>
+
+#include "Transmitter.hxx"
+
+namespace css = ::com::sun::star;
+
+namespace sd
+{
+
+class ImagePreparer:
+    public salhelper::Thread
+{
+public:
+    ImagePreparer( const
+        css::uno::Reference<css::presentation::XSlideShowController>&
+        rxController, sd::Transmitter *aTransmitter,
+        rtl::Reference<ImagePreparer>& rRef );
+    ~ImagePreparer();
+
+private:
+    css::uno::Reference<css::presentation::XSlideShowController> xController;
+    Transmitter *pTransmitter;
+    rtl::Reference<ImagePreparer>& mRef;
+
+    // Thread method
+    void execute();
+
+    void sendPreview( sal_uInt32 aSlideNumber );
+    css::uno::Sequence<sal_Int8> preparePreview( sal_uInt32 aSlideNumber,
+                sal_uInt32 aWidth, sal_uInt32 aHeight, sal_uInt64 &rSize );
+};
+
+}
+
+
+#endif // _SD_IMPRESSREMOTE_IMAGEPREPARER_HXX
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/remotecontrol/Listener.cxx b/sd/source/ui/remotecontrol/Listener.cxx
index 1f55710fe41d..361990530cf5 100644
--- a/sd/source/ui/remotecontrol/Listener.cxx
+++ b/sd/source/ui/remotecontrol/Listener.cxx
@@ -48,6 +48,14 @@ void Listener::init( const css::uno::Reference< css::presentation::XSlideShowCon
         aController->addSlideShowListener( this );
         fprintf( stderr, "Registered listener.\n" );
 
+        sal_Int32 aSlides = aController->getSlideCount();
+        OStringBuffer aBuffer;
+        aBuffer.append( "slideshow_started\n" )
+               .append( OString::valueOf( aSlides ) ).append( "\n\n" );
+
+        pTransmitter->addMessage( aBuffer.makeStringAndClear(),
+                                  Transmitter::Priority::HIGH );
+
         mPreparer.set( new ImagePreparer( aController, pTransmitter, mPreparer ) );
         mPreparer->launch();
     }
diff --git a/sd/source/ui/remotecontrol/Listener.hxx b/sd/source/ui/remotecontrol/Listener.hxx
index 92a0b93ff7ea..1fc411d08c64 100644
--- a/sd/source/ui/remotecontrol/Listener.hxx
+++ b/sd/source/ui/remotecontrol/Listener.hxx
@@ -26,6 +26,10 @@
 namespace css = ::com::sun::star;
 
 namespace sd {
+/**
+ * Slide show listener. This class can also be used for anything else that is
+ * specific to the lifetime of one slideshow while a client is connected.
+ */
 class Listener
     : protected ::cppu::BaseMutex,
       public ::cppu::WeakComponentImplHelper1< css::presentation::XSlideShowListener >
diff --git a/sd/source/ui/remotecontrol/Server.cxx b/sd/source/ui/remotecontrol/Server.cxx
index 0329e27ffb1f..700e561d24c8 100644
--- a/sd/source/ui/remotecontrol/Server.cxx
+++ b/sd/source/ui/remotecontrol/Server.cxx
@@ -94,8 +94,7 @@ void Server::listenThread()
     }
     // TODO: deal with transmision errors gracefully.
     fprintf( stderr, "done with transmitting\n" );
-    mListener->disposing();
-    mListener = NULL;
+    presentationStopped();
 
     delete pTransmitter;
     pTransmitter = NULL;