drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx | 36 ++-----------
1 file changed, 6 insertions(+), 30 deletions(-)
New commits:
commit bf978a527fb0bba27cd2c83443e70ad86a63d819
Author: Katarina Behrens <katarina.behr...@cib.de>
AuthorDate: Thu Jan 31 17:18:36 2019 +0100
Commit: Katarina Behrens <katarina.behr...@cib.de>
CommitDate: Thu Jan 31 17:24:13 2019 +0100
Export background images provided by master page as artifacts
so that screenreaders don't announce them. To make this happen,
pass them as NonStructElement to PDF writer
Change-Id: I94d52ee0207cd6362edabfb9b891faa7fe341543
diff --git a/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx
b/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx
index ece83ddc8c52..5c06999ce20e 100644
--- a/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx
+++ b/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx
@@ -2297,38 +2297,14 @@ namespace drawinglayer
{
// structured tag primitive
const vcl::PDFWriter::StructElement&
rTagElement(rStructureTagCandidate.getStructureElement());
- bool bTagUsed(vcl::PDFWriter::NonStructElement != rTagElement);
+ const bool bTagUsed(vcl::PDFWriter::NonStructElement !=
rTagElement);
+ const bool bIsBackground(rStructureTagCandidate.isBackground());
- //Z For now, just do not create StructureTag(s) for
hidden/background
- // (Graphic)Objects - see '/Artifact' comments below
- if(bTagUsed && rStructureTagCandidate.isBackground())
+ if(mpPDFExtOutDevData && bTagUsed)
{
- bTagUsed = false;
- }
-
- if(mpPDFExtOutDevData && bTagUsed)
- {
- // write start tag
- mpPDFExtOutDevData->BeginStructureElement(rTagElement);
-
- // if(rStructureTagCandidate.isBackground())
- // {
- // //Z need to somehow apply '/Artifact' information...
- // // - Already experimented with adding two
BeginStructureElement adding
- // // a 'vcl::PDFWriter::Artifact' -> not really what
e.g. PAC3 expects.
- // // - May also be adding someting using
'SetStructureAttribute' and
- // // extending vcl::PDFWriter::StructAttribute...
- // // - Simple solution for now (see above): Just do not
create
- // // StructureTag(s) for hidden/background
(Graphic)Objects. That
- // // works, shows all content in PDF renderers, but
hides in
- // // TaggedStructure. But: also not visible in PAC3's
'LogicalStructure'
- // // View where there is a tab for 'Artifacts' - I
*guess* a correctly
- // // tagged '/Artifact' should appear there.
- // // Unfortunately found no real example - there is
https://www.w3.org/TR/WCAG20-TECHS/PDF4.html
- // // which claims to have an example in
- // //
https://www.w3.org/WAI/WCAG20/Techniques/working-examples/PDF4/decorative-image.docx
- // // but that file has no '/Artifact' entries at all...
- // }
+ // Write start tag. For background elements use
NonStructElement instead of real element type (e.g. Figure)
+ // to guarantee it gets exported as artifact (tagged PDF)
+ mpPDFExtOutDevData->BeginStructureElement(bIsBackground ?
vcl::PDFWriter::NonStructElement : rTagElement);
}
// process children normally
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