PDF export: don't ignore FilterData specified by UNO clients

The data was given to the PDF filter, but then we stopped iterating
right after finding our output stream. Seems this was always like this,
ever since commit 4111b430a0a7954416ff95794a8ffb8fbc4472e3 (#101570#:
added pdf filter, 2002-08-13).

Change-Id: If26661935c22a7b7959fda5f92b4d50b15f13a35
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/87152
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

2 files changed, 90 insertions, 0 deletions

diff --git a/vcl/qa/cppunit/pdfexport/data/reduce-image.fodt b/vcl/qa/cppunit/pdfexport/data/reduce-image.fodt
new file mode 100644
index 000000000000..b5737ae27ec1
--- /dev/null
+++ b/vcl/qa/cppunit/pdfexport/data/reduce-image.fodt
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<office:document xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:css3t="http://www.w3.org/TR/css3-text/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ooo="http://openoffice.org/2004/office" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:officeooo="http://openoffice.org/2009/office" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:rpt="http://openoffice.org/2005/report" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" office:version="1.2" office:mimetype="application/vnd.oasis.opendocument.text">
+  <office:styles>
+    <style:default-style style:family="graphic">
+    </style:default-style>
+    <style:style style:name="Graphics" style:family="graphic">
+    </style:style>
+  </office:styles>
+  <office:automatic-styles>
+    <style:style style:name="fr1" style:family="graphic" style:parent-style-name="Graphics">
+      <style:graphic-properties style:run-through="foreground" style:horizontal-pos="center" style:horizontal-rel="paragraph" style:mirror="none" fo:clip="rect(0cm, 0cm, 0cm, 0cm)" draw:luminance="0%" draw:contrast="0%" draw:red="0%" draw:green="0%" draw:blue="0%" draw:gamma="100%" draw:color-inversion="false" draw:image-opacity="100%" draw:color-mode="standard"/>
+    </style:style>
+  </office:automatic-styles>
+  <office:body>
+    <office:text>
+      <text:p text:style-name="Standard"><draw:frame draw:style-name="fr1" draw:name="Image1" text:anchor-type="char" svg:width="0.041cm" svg:height="0.041cm" draw:z-index="0"><draw:image loext:mime-type="image/png"><office:binary-data>iVBORw0KGgoAAAANSUhEUgAAAKAAAACgCAYAAACLz2ctAAAABmJLR0QA/wD/AP+gvaeTAAAA
+       CXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH5AEVDCUTfvEVdAAAAYhJREFUeNrt3bEJwzAQ
+       htFckjLreP8Bso5bc2lTpBDG4kfkvQUE5uNUGEnV3TdIufsECBABggARIAgQAYIAESAIEAGC
+       ABEgCBABggARIAgQAYIAESAIEAGCABEgCBABggARIHx7phZ+vF9D13Id217WXW9dExBbMAgQ
+       AYIAESAIEAGCABEgCBABIkAQIAIEASJAECAChKnq6hfTR88gsKarz46YgNiCESAIEAGCABEg
+       CBABwlSx27FStzHxW+oPlgmILRgBggARIAgQAYIAESAIEAGCABEgCBABggARIAgQAYIAESAI
+       EAGCABEgCBABggARIAgQAYIAESACBAEiQBAgAgQBIkAQIAIEASJAECACBAEiQBAgi4u9mJ56
+       oRsTEASIAEGACBABggARIAiQP1LdmR8So39Cjm0v6663rgmILRgEiABBgAgQBIgAQYAIEASI
+       ABEgCBABggARIAgQAcJUsTMhYAIiQAQIAkSAIEAECAJEgCBABAgCRIAgQAQIAkSAIEAECKd9
+       AEYENxB/sygQAAAAAElFTkSuQmCC
+      </office:binary-data></draw:image></draw:frame></text:p>
+    </office:text>
+  </office:body>
+</office:document>
diff --git a/vcl/qa/cppunit/pdfexport/pdfexport.cxx b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
index d3cdcce90ea4..c13b2ab80c09 100644
--- a/vcl/qa/cppunit/pdfexport/pdfexport.cxx
+++ b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
@@ -22,6 +22,9 @@
 #include <com/sun/star/beans/XPropertySet.hpp>
 #include <com/sun/star/drawing/XShape.hpp>
 #include <com/sun/star/text/XTextDocument.hpp>
+#include <com/sun/star/document/XFilter.hpp>
+#include <com/sun/star/document/XExporter.hpp>
+#include <com/sun/star/io/XOutputStream.hpp>
 
 #include <comphelper/processfactory.hxx>
 #include <comphelper/propertysequence.hxx>
@@ -37,6 +40,7 @@
 #include <fpdfview.h>
 #include <vcl/graphicfilter.hxx>
 #include <basegfx/matrix/b2dhommatrix.hxx>
+#include <unotools/streamwrap.hxx>
 
 using namespace ::com::sun::star;
 
@@ -138,6 +142,7 @@ public:
     void testTocLink();
     void testPdfImageResourceInlineXObjectRef();
     void testReduceSmallImage();
+    void testReduceImage();
 
     CPPUNIT_TEST_SUITE(PdfExportTest);
     CPPUNIT_TEST(testTdf106059);
@@ -176,6 +181,7 @@ public:
     CPPUNIT_TEST(testTocLink);
     CPPUNIT_TEST(testPdfImageResourceInlineXObjectRef);
     CPPUNIT_TEST(testReduceSmallImage);
+    CPPUNIT_TEST(testReduceImage);
     CPPUNIT_TEST_SUITE_END();
 };
 
@@ -1899,6 +1905,61 @@ void PdfExportTest::testReduceSmallImage()
     CPPUNIT_ASSERT_EQUAL(16, nHeight);
 }
 
+void PdfExportTest::testReduceImage()
+{
+    // Load the Writer document.
+    OUString aURL = m_directories.getURLFromSrc(DATA_DIRECTORY) + "reduce-image.fodt";
+    mxComponent = loadFromDesktop(aURL);
+
+    // Save as PDF.
+    uno::Reference<css::lang::XMultiServiceFactory> xFactory = getMultiServiceFactory();
+    uno::Reference<document::XFilter> xFilter(
+        xFactory->createInstance("com.sun.star.document.PDFFilter"), uno::UNO_QUERY);
+    uno::Reference<document::XExporter> xExporter(xFilter, uno::UNO_QUERY);
+    xExporter->setSourceDocument(mxComponent);
+
+    SvFileStream aOutputStream(maTempFile.GetURL(), StreamMode::WRITE);
+    uno::Reference<io::XOutputStream> xOutputStream(new utl::OStreamWrapper(aOutputStream));
+
+    uno::Sequence<beans::PropertyValue> aFilterData(
+        comphelper::InitPropertySequence({ { "ReduceImageResolution", uno::Any(false) } }));
+
+    // This is intentionally in an "unlucky" order, output stream comes before filter data.
+    uno::Sequence<beans::PropertyValue> aDescriptor(comphelper::InitPropertySequence({
+        { "FilterName", uno::Any(OUString("writer_pdf_Export")) },
+        { "OutputStream", uno::Any(xOutputStream) },
+        { "FilterData", uno::Any(aFilterData) },
+    }));
+    xFilter->filter(aDescriptor);
+    aOutputStream.Close();
+
+    // Parse the PDF: get the image.
+    SvFileStream aFile(maTempFile.GetURL(), StreamMode::READ);
+    maMemory.WriteStream(aFile);
+    DocumentHolder pPdfDocument(
+        FPDF_LoadMemDocument(maMemory.GetData(), maMemory.GetSize(), /*password=*/nullptr));
+    CPPUNIT_ASSERT(pPdfDocument.get());
+    CPPUNIT_ASSERT_EQUAL(1, FPDF_GetPageCount(pPdfDocument.get()));
+    PageHolder pPdfPage(FPDF_LoadPage(pPdfDocument.get(), /*page_index=*/0));
+    CPPUNIT_ASSERT(pPdfPage.get());
+    CPPUNIT_ASSERT_EQUAL(1, FPDFPage_CountObjects(pPdfPage.get()));
+    FPDF_PAGEOBJECT pPageObject = FPDFPage_GetObject(pPdfPage.get(), 0);
+    CPPUNIT_ASSERT_EQUAL(FPDF_PAGEOBJ_IMAGE, FPDFPageObj_GetType(pPageObject));
+
+    // Make sure we don't scale down a bitmap.
+    FPDF_BITMAP pBitmap = FPDFImageObj_GetBitmap(pPageObject);
+    CPPUNIT_ASSERT(pBitmap);
+    int nWidth = FPDFBitmap_GetWidth(pBitmap);
+    int nHeight = FPDFBitmap_GetHeight(pBitmap);
+    FPDFBitmap_Destroy(pBitmap);
+    // Without the accompanying fix in place, this test would have failed with:
+    // - Expected: 160
+    // - Actual  : 6
+    // i.e. the image was scaled down even with ReduceImageResolution=false.
+    CPPUNIT_ASSERT_EQUAL(160, nWidth);
+    CPPUNIT_ASSERT_EQUAL(160, nHeight);
+}
+
 void PdfExportTest::testPdfImageResourceInlineXObjectRef()
 {
     // Create an empty document.