filter/source/pdf/pdfdecomposer.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   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
  10 #include <vector>
  11
  12 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  13 #include <cppuhelper/implbase2.hxx>
  14 #include <cppuhelper/supportsservice.hxx>
  15 #include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
  16 #include <drawinglayer/primitive2d/Primitive2DContainer.hxx>
  17 #include <vcl/bitmapex.hxx>
  18 #include <vcl/pdfread.hxx>
  19 #include <vcl/svapp.hxx>
  20 #include <vcl/outdev.hxx>
  21 #include <vcl/BinaryDataContainer.hxx>
  22 #include <vcl/BinaryDataContainerTools.hxx>
  23 #include <toolkit/helper/vclunohelper.hxx>
  24
  25 #include <com/sun/star/graphic/XPdfDecomposer.hpp>
  26 #include <com/sun/star/lang/XServiceInfo.hpp>
  27 #include <com/sun/star/uno/XComponentContext.hpp>
  28 #include <com/sun/star/util/XBinaryDataContainer.hpp>
  29
  30 using namespace css;
  31
  32 namespace
  33 {
  34 /// Class to convert the PDF data into a XPrimitive2D (containing only a bitmap).
  35 class XPdfDecomposer
  36     : public ::cppu::WeakAggImplHelper2<graphic::XPdfDecomposer, lang::XServiceInfo>
  37 {
  38 public:
  39     explicit XPdfDecomposer(uno::Reference<uno::XComponentContext> const& context);
  40     XPdfDecomposer(const XPdfDecomposer&) = delete;
  41     XPdfDecomposer& operator=(const XPdfDecomposer&) = delete;
  42
  43     // XPdfDecomposer
  44     uno::Sequence<uno::Reference<graphic::XPrimitive2D>> SAL_CALL
  45     getDecomposition(const uno::Reference<util::XBinaryDataContainer>& xDataContainer,
  46                      const uno::Sequence<beans::PropertyValue>& xDecompositionParameters) override;
  47
  48     // XServiceInfo
  49     OUString SAL_CALL getImplementationName() override;
  50     sal_Bool SAL_CALL supportsService(const OUString&) override;
  51     uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
  52 };
  53
  54 XPdfDecomposer::XPdfDecomposer(uno::Reference<uno::XComponentContext> const&) {}
  55
  56 uno::Sequence<uno::Reference<graphic::XPrimitive2D>> SAL_CALL
  57 XPdfDecomposer::getDecomposition(const uno::Reference<util::XBinaryDataContainer>& xDataContainer,
  58                                  const uno::Sequence<beans::PropertyValue>& xParameters)
  59 {
  60     sal_Int32 nPageIndex = -1;
  61
  62     for (const beans::PropertyValue& rProperty : xParameters)
  63     {
  64         if (rProperty.Name == "PageIndex")
  65         {
  66             rProperty.Value >>= nPageIndex;
  67             break;
  68         }
  69     }
  70
  71     if (nPageIndex < 0)
  72         nPageIndex = 0;
  73
  74     BinaryDataContainer aDataContainer = vcl::convertUnoBinaryDataContainer(xDataContainer);
  75
  76     std::vector<BitmapEx> aBitmaps;
  77     int rv = vcl::RenderPDFBitmaps(aDataContainer.getData(), aDataContainer.getSize(), aBitmaps,
  78                                    nPageIndex, 1);
  79     if (rv == 0)
  80         return {}; // happens if we do not have PDFium
  81
  82     BitmapEx aReplacement(aBitmaps[0]);
  83
  84     // short form for scale and translate transformation
  85     const Size aBitmapSize(aReplacement.GetSizePixel());
  86     // ImpGraphic::getPrefMapMode() requires mm100 for bitmaps rendered from vector graphic data.
  87     const Size aMM100(
  88         Application::GetDefaultDevice()->PixelToLogic(aBitmapSize, MapMode(MapUnit::Map100thMM)));
  89     const basegfx::B2DHomMatrix aBitmapTransform(basegfx::utils::createScaleTranslateB2DHomMatrix(
  90         aMM100.getWidth(), aMM100.getHeight(), 0, 0));
  91
  92     // create primitive
  93     return drawinglayer::primitive2d::Primitive2DContainer{
  94         new drawinglayer::primitive2d::BitmapPrimitive2D(aReplacement, aBitmapTransform)
  95     }
  96         .toSequence();
  97 }
  98
  99 OUString SAL_CALL XPdfDecomposer::getImplementationName()
 100 {
 101     return "com.sun.star.comp.PDF.PDFDecomposer";
 102 }
 103
 104 sal_Bool SAL_CALL XPdfDecomposer::supportsService(const OUString& rServiceName)
 105 {
 106     return cppu::supportsService(this, rServiceName);
 107 }
 108
 109 uno::Sequence<OUString> SAL_CALL XPdfDecomposer::getSupportedServiceNames()
 110 {
 111     return { "com.sun.star.graphic.PdfTools" };
 112 }
 113 }
 114
 115 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
 116 filter_PdfDecomposer_get_implementation(css::uno::XComponentContext* context,
 117                                         css::uno::Sequence<css::uno::Any> const&)
 118 {
 119     return cppu::acquire(new XPdfDecomposer(context));
 120 }
 121
 122 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */