filter/source/graphic/GraphicExportFilter.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "GraphicExportFilter.hxx"
  21
  22 #include <com/sun/star/drawing/GraphicExportFilter.hpp>
  23 #include <com/sun/star/drawing/XShape.hpp>
  24 #include <com/sun/star/drawing/XShapes.hpp>
  25 #include <com/sun/star/frame/XModel.hpp>
  26
  27 #include <cppuhelper/supportsservice.hxx>
  28 #include <utility>
  29 #include <vcl/graphicfilter.hxx>
  30 #include <svl/outstrm.hxx>
  31 #include <svtools/DocumentToGraphicRenderer.hxx>
  32
  33 using namespace css;
  34
  35 GraphicExportFilter::GraphicExportFilter( uno::Reference< uno::XComponentContext > xContext  )
  36     : mxContext(std::move(xContext))
  37     , mnTargetWidth(0)
  38     , mnTargetHeight(0)
  39     , mbSelectionOnly(false)
  40 {}
  41
  42 GraphicExportFilter::~GraphicExportFilter()
  43 {}
  44
  45 //  XServiceInfo
  46 sal_Bool GraphicExportFilter::supportsService(const OUString& sServiceName)
  47 {
  48     return cppu::supportsService(this, sServiceName);
  49 }
  50 OUString GraphicExportFilter::getImplementationName()
  51 {
  52     return "com.sun.star.comp.GraphicExportFilter";
  53 }
  54 css::uno::Sequence< OUString > GraphicExportFilter::getSupportedServiceNames()
  55 {
  56     return { "com.sun.star.document.ExportFilter" };
  57 }
  58
  59 void GraphicExportFilter::gatherProperties( const uno::Sequence< beans::PropertyValue > & rProperties )
  60 {
  61     OUString aInternalFilterName;
  62
  63     for ( const beans::PropertyValue& rProperty : rProperties )
  64     {
  65         if ( rProperty.Name == "FilterName" )
  66         {
  67             rProperty.Value >>= aInternalFilterName;
  68             const sal_Int32 nLen = aInternalFilterName.getLength();
  69             aInternalFilterName = aInternalFilterName.replaceFirst("calc_", "");
  70             if (aInternalFilterName.getLength() == nLen)
  71                 aInternalFilterName = aInternalFilterName.replaceFirst("writer_", "");
  72             if (aInternalFilterName.getLength() == nLen)
  73                 aInternalFilterName = aInternalFilterName.replaceFirst("web_", "");
  74             if (aInternalFilterName.getLength() == nLen)
  75                 aInternalFilterName = aInternalFilterName.replaceFirst("draw_", "");
  76             if (aInternalFilterName.getLength() == nLen)
  77                 aInternalFilterName = aInternalFilterName.replaceFirst("impress_", "");
  78         }
  79         else if ( rProperty.Name == "FilterData" )
  80         {
  81             rProperty.Value >>= maFilterDataSequence;
  82         }
  83         else if ( rProperty.Name == "OutputStream" )
  84         {
  85             rProperty.Value >>= mxOutputStream;
  86         }
  87         else if ( rProperty.Name == "SelectionOnly" )
  88         {
  89             rProperty.Value >>= mbSelectionOnly;
  90         }
  91     }
  92
  93     for ( const beans::PropertyValue& rProp : std::as_const(maFilterDataSequence) )
  94     {
  95         if ( rProp.Name == "PixelWidth" )
  96         {
  97             rProp.Value >>= mnTargetWidth;
  98         }
  99         else if ( rProp.Name == "PixelHeight" )
 100         {
 101             rProp.Value >>= mnTargetHeight;
 102         }
 103     }
 104
 105     if ( aInternalFilterName.isEmpty() )
 106         return;
 107
 108     GraphicFilter aGraphicFilter( true );
 109
 110     sal_uInt16 nFilterCount = aGraphicFilter.GetExportFormatCount();
 111     sal_uInt16 nFormat;
 112
 113     for ( nFormat = 0; nFormat < nFilterCount; nFormat++ )
 114     {
 115         if ( aGraphicFilter.GetExportInternalFilterName( nFormat ) == aInternalFilterName )
 116             break;
 117     }
 118     if ( nFormat < nFilterCount )
 119     {
 120         maFilterExtension = aGraphicFilter.GetExportFormatShortName( nFormat );
 121     }
 122 }
 123
 124 sal_Bool SAL_CALL GraphicExportFilter::filter( const uno::Sequence< beans::PropertyValue > & rDescriptor )
 125 {
 126     gatherProperties(rDescriptor);
 127
 128     if (mbSelectionOnly && mxDocument.is())
 129     {
 130         uno::Reference< frame::XModel > xModel( mxDocument, uno::UNO_QUERY);
 131         if (xModel.is())
 132         {
 133             uno::Reference< frame::XController > xController( xModel->getCurrentController());
 134             if (xController.is())
 135             {
 136                 uno::Reference< drawing::XShapes > xShapes;
 137                 uno::Reference< drawing::XShape > xShape;
 138                 if (DocumentToGraphicRenderer::isShapeSelected( xShapes, xShape, xController))
 139                     return filterExportShape( rDescriptor, xShapes, xShape);
 140             }
 141         }
 142     }
 143
 144     return filterRenderDocument();
 145 }
 146
 147 bool GraphicExportFilter::filterRenderDocument() const
 148 {
 149     DocumentToGraphicRenderer aRenderer( mxDocument, mbSelectionOnly );
 150     sal_Int32 nCurrentPage = aRenderer.getCurrentPage();
 151     Size aDocumentSizePixel = aRenderer.getDocumentSizeInPixels(nCurrentPage);
 152
 153     Size aTargetSizePixel(mnTargetWidth, mnTargetHeight);
 154
 155     if (mnTargetWidth == 0 || mnTargetHeight == 0)
 156         aTargetSizePixel = aDocumentSizePixel;
 157
 158     Graphic aGraphic = aRenderer.renderToGraphic(nCurrentPage, aDocumentSizePixel, aTargetSizePixel, COL_WHITE, /*bExtOutDevData=*/false);
 159
 160     GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
 161
 162     sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName( maFilterExtension );
 163
 164     SvMemoryStream aMemStream;
 165     const GraphicConversionParameters aParameters(aTargetSizePixel, true, true);
 166
 167     const ErrCode nResult = rFilter.ExportGraphic( aGraphic.GetBitmapEx(aParameters), u"", aMemStream,
 168             nFilterFormat, &maFilterDataSequence );
 169
 170     if ( nResult == ERRCODE_NONE )
 171     {
 172         SvOutputStream aOutputStream( mxOutputStream );
 173         aMemStream.Seek(0);
 174         aOutputStream.WriteStream( aMemStream );
 175
 176         return true;
 177     }
 178
 179     return false;
 180 }
 181
 182 bool GraphicExportFilter::filterExportShape(
 183         const css::uno::Sequence< css::beans::PropertyValue > & rDescriptor,
 184         const css::uno::Reference< css::drawing::XShapes > & rxShapes,
 185         const css::uno::Reference< css::drawing::XShape > & rxShape ) const
 186 {
 187     uno::Reference< lang::XComponent > xSourceDoc;
 188     if (rxShapes.is())
 189         xSourceDoc.set( rxShapes, uno::UNO_QUERY_THROW );
 190     else if (rxShape.is())
 191         xSourceDoc.set( rxShape, uno::UNO_QUERY_THROW );
 192     if (!xSourceDoc.is())
 193         return false;
 194
 195     uno::Reference< drawing::XGraphicExportFilter > xGraphicExporter =
 196         drawing::GraphicExportFilter::create( mxContext );
 197     if (!xGraphicExporter.is())
 198         return false;
 199
 200     // Need to replace the internal filter name with the short name
 201     // (extension).
 202     uno::Sequence< beans::PropertyValue > aDescriptor( rDescriptor);
 203     for (sal_Int32 i = 0; i < aDescriptor.getLength(); ++i)
 204     {
 205         if (aDescriptor[i].Name == "FilterName")
 206         {
 207             aDescriptor.getArray()[i].Value <<= maFilterExtension;
 208             break;
 209         }
 210     }
 211
 212     xGraphicExporter->setSourceDocument( xSourceDoc );
 213     return xGraphicExporter->filter( aDescriptor );
 214 }
 215
 216 void SAL_CALL GraphicExportFilter::cancel( )
 217 {
 218 }
 219
 220 void SAL_CALL GraphicExportFilter::setSourceDocument( const uno::Reference< lang::XComponent > & xDocument )
 221 {
 222     mxDocument = xDocument;
 223 }
 224
 225 void SAL_CALL GraphicExportFilter::initialize( const uno::Sequence< uno::Any > & )
 226 {
 227 }
 228
 229 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
 230 filter_GraphicExportFilter_get_implementation(
 231     css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
 232 {
 233     return cppu::acquire(new GraphicExportFilter(context));
 234 }
 235 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */