Image export, encoding and decoding. Protocol improvements.

Change-Id: Ibbc7ac02c5946a49c1cd777abc2853fe7e158009

1 files changed, 146 insertions, 39 deletions

diff --git a/sd/source/ui/remotecontrol/Receiver.cxx b/sd/source/ui/remotecontrol/Receiver.cxx
index a2120b1a7d64..9015d799ec0e 100644
--- a/sd/source/ui/remotecontrol/Receiver.cxx
+++ b/sd/source/ui/remotecontrol/Receiver.cxx
@@ -1,38 +1,34 @@
-/*************************************************************************
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
  *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * Copyright 2012 Andrzej J.R. Hunt
- *
- * LibreOffice - a multi-platform office productivity suite
- *
- * This file is part of OpenOffice.org.
- *
- * LibreOffice 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.
- *
- * Libreoffice 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 LibreOffice.  If not, see
- * <http://www.openoffice.org/license.html>
- * for a copy of the LGPLv3 License.
- *
- ************************************************************************/
+ * 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 "Receiver.hxx"
-#include <cstring>
+#include <string.h>
 #include <com/sun/star/frame/XFramesSupplier.hpp>
+#include <com/sun/star/document/XFilter.hpp>
+#include <com/sun/star/document/XExporter.hpp>
 #include <com/sun/star/uno/RuntimeException.hpp>
+#include <com/sun/star/beans/PropertyValue.hpp>
+
 #include <comphelper/processfactory.hxx>
+#include <osl/file.hxx>
+#include <xmlsec/base64.h>
+#include <rtl/ustrbuf.hxx>
+#include <sax/tools/converter.hxx>
 using namespace sd;
 using namespace ::com::sun::star::presentation;
 using namespace ::com::sun::star;
 using namespace ::com::sun::star::frame;
+using namespace ::com::sun::star::beans;
+using namespace ::com::sun::star::document;
+using rtl::OUString;
+using rtl::OString;
+using namespace ::osl;
+
 Receiver::Receiver()
 {
     g_type_init ();
@@ -65,7 +61,7 @@ void Receiver::executeCommand( JsonObject *aObject, Reference<XSlideShowControll
 
 }
 
-void Receiver::parseCommand( const char* aCommand, sal_Int32 size, XSlideShowController *aController )
+void Receiver::parseCommand( const char* aCommand, sal_Int32 size, osl::StreamSocket &aStreamSocket )
 {
     Reference<XSlideShowController> xSlideShowController;
     try {
@@ -78,6 +74,7 @@ void Receiver::parseCommand( const char* aCommand, sal_Int32 size, XSlideShowCon
         Reference<XPresentation2> xPresentation(xPS->getPresentation(), UNO_QUERY_THROW);
         // Throws an exception if now slideshow running
        xSlideShowController =  Reference<XSlideShowController>( xPresentation->getController(), UNO_QUERY_THROW );
+       sendPreview( 1, xSlideShowController, aStreamSocket );
     }
     catch ( com::sun::star::uno::RuntimeException &e )
     {
@@ -107,18 +104,128 @@ void Receiver::parseCommand( const char* aCommand, sal_Int32 size, XSlideShowCon
 
 }
 
-// void preparePreview(sal_Int32 aSlideNumber, Reference<SlideShowController> aController)
-// {
-//     uno::Reference< XDrawPage > aSlide( aController->getSlideByIndex( aSlideNumber ) );
-//
-//     uno::Reference< lang::XMultiServiceFactory > xServiceManager(
-//             ::comphelper::getProcessServiceFactory(), uno::UNO_QUERY_THROW );
-//
-//     uno::Reference< XGraphicExportFilter > xGraphicExportFilter( xServiceManager->createInstance(
-//         "com.sun.star.drawing.GraphicExportFilter" ) , UNO_QUERY_THROW );
-//
-//     xGraphicExportFilter->setSource( aSlide );
 
+void sendPreview(sal_uInt32 aSlideNumber, Reference<XSlideShowController> xSlideShowController, osl::StreamSocket &mStreamSocket )
+{
+
+    sal_uInt64 aSize;
+
+    uno::Sequence<sal_Int8> aData = preparePreview( aSlideNumber, xSlideShowController, 320, 240, aSize );
+
+    rtl::OUStringBuffer aStrBuffer;
+//     char* aDataEncoded = (char*) xmlSecBase64Encode( (xmlSecByte *) aData, aSize, 0 );
+    ::sax::Converter::encodeBase64( aStrBuffer, aData );
+
+    OUString aEncodedString = aStrBuffer.makeStringAndClear();
+    OString aEncodedShortString = rtl::OUStringToOString( aEncodedString, RTL_TEXTENCODING_UTF8 );
+//     aEncodedString.convertToString( &aEncodedShortString, RTL_TEXTENCODING_UTF8 , 0);
+
+    JsonBuilder *aBuilder = json_builder_new();
+
+
+    json_builder_begin_object( aBuilder );
+
+    json_builder_set_member_name( aBuilder, "command" );
+    json_builder_add_string_value( aBuilder, "slide_preview" );
+
+    json_builder_set_member_name( aBuilder, "slide_number" );
+    json_builder_add_int_value( aBuilder, 2 );
+
+    json_builder_set_member_name( aBuilder, "image_preview" );
+    json_builder_add_string_value( aBuilder, aEncodedShortString.getStr() );
+
+    // FIXME: get the slide number
+    json_builder_end_object( aBuilder );
+
+    JsonGenerator *aGen = json_generator_new();
+    JsonNode *aRoot = json_builder_get_root( aBuilder );
+    json_generator_set_root( aGen, aRoot );
+    char *aCommand = json_generator_to_data( aGen, NULL);
+
+    json_node_free( aRoot );
+    g_object_unref ( aGen );
+    g_object_unref ( aBuilder );
+
+    sal_Int32 aLen = strlen( aCommand );
+
+    OString aLengthString = OString::valueOf( aLen );
+    const char *aLengthChar = aLengthString.getStr();
+
+    sal_Int32 aLengthLength = aLengthString.getLength();
+
+    fprintf( stderr, "%s\n", aCommand );
+
+    mStreamSocket.write( aLengthChar, aLengthLength );
+    mStreamSocket.write( "\n", 1 );
+    mStreamSocket.write( aCommand, aLen );
+    // Transmit here.
+
+    g_free( aCommand );
+
+}
+
+Sequence<sal_Int8> preparePreview(sal_uInt32 aSlideNumber, Reference<XSlideShowController> xSlideShowController, sal_uInt32 aWidth, sal_uInt32 aHeight, sal_uInt64 &rSize )
+{
+
+    // Create temp file
+    OUString aFileURL;
+    FileBase::createTempFile( 0, 0, &aFileURL );
+
+
+    uno::Reference< lang::XMultiServiceFactory > xServiceManager(
+            ::comphelper::getProcessServiceFactory(), uno::UNO_QUERY_THROW );
+
+    uno::Reference< XFilter > xFilter( xServiceManager->createInstance(
+        "com.sun.star.drawing.GraphicExportFilter"  ) , UNO_QUERY_THROW );
+
+    uno::Reference< XExporter > xExporter( xFilter, uno::UNO_QUERY_THROW );
+
+
+    uno::Reference< lang::XComponent > xSourceDoc(
+        xSlideShowController->getSlideByIndex( aSlideNumber ) , uno::UNO_QUERY_THROW );
+
+    xExporter->setSourceDocument( xSourceDoc );
+
+    Sequence< beans::PropertyValue > aFilterData(3);
+    aFilterData[0].Name = "PixelWidth";
+    aFilterData[0].Value <<= 2000;
+    aFilterData[1].Name = "PixelHeight";
+    aFilterData[1].Value <<= 2000;
+
+    // Add quality if jpg "Quality" [1-100]
+    // FIXME: is setting color mode needed.
+    aFilterData[2].Name = "ColorMode";
+    aFilterData[2].Value <<= 0; // Color
+
+    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 );
+
+    fprintf( stderr, "%s\n", rtl::OUStringToOString( aFileURL , RTL_TEXTENCODING_UTF8 ).getStr() );
+
+    // 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