tdf#132599 cui offapi sw xmloff: implement hyphenate-keep

Both parts of a hyphenated word shall lie within a single
page with ODF paragraph setting fo:hyphenation-keep="page".
The implementation follows the default page layout of
MSO 2016 and newer by shifting the bottom hyphenated line
to the next page (and to the next column, see last note).

Note: this is a MSO DOCX interoperability feature, used
also in DTP software, XSL and CSS.

* Add checkbox/combobox to Text Flow in paragraph dialog
* Store property in paragraph model (com::sun::star::style::ParagraphProperties::ParaHyphenationKeep)
* Add ODF import/export
* Add ODF unit tests

New constants of com::sun::star::text::ParagraphHyphenationKeepType,
containing ODF AUTO and PAGE (borrowed from XSL), and for the
planned extension ParaHyphenationKeepType of ParagraphProperties:

– COLUMN (standard XSL value, defined in
https://www.w3.org/TR/2001/REC-xsl-20011015/slice7.html#hyphenation-keep)

– SPREAD and ALWAYS (CSS 4 values of hyphenate-limit-last,
equivalent of hyphenation-keep, defined in
https://www.w3.org/TR/css-text-4/#hyphenate-line-limits).

Note: the implementation truncates only a single hyphenated
line, like MSO does: the pages can end in hyphenated
lines (i.e. in the case of consecutive hyphenated lines),
but less often, than before.

Clean-up hyphenation dialog by collecting "Don't hyphenate"
options at the end of the hyphenation settings, and negating them
(similar to MSO and DTP), adding also the new option
"Hyphenate across column and page":

[x] Hyphenate words in CAPS
[x] Hyphenate last word
[x] Hyphenate across column and page

Note: ODF fo:hyphenation-keep has got only "auto" and
"page" attributes, while XSL defines also "column".
Because of the interoperability with MSO and DTP,
fo:hyphenation-keep="page" is interpreted as
XSL "column", avoiding hyphenation at the end
of column, not only at the end of page.

Change-Id: I5c6b7adc0671a5a790568e7bf1d33256e607f85f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/164158
Tested-by: László Németh <nemeth@numbertext.org>
Reviewed-by: László Németh <nemeth@numbertext.org>

2 files changed, 2 insertions, 0 deletions

diff --git a/sw/inc/inspectorproperties.hrc b/sw/inc/inspectorproperties.hrc
index e232ea1d3f33..bc9686b0aa91 100644
--- a/sw/inc/inspectorproperties.hrc
+++ b/sw/inc/inspectorproperties.hrc
@@ -209,6 +209,7 @@
 #define RID_PARA_HYPHENATION_NO_LAST_WORD                   NC_("RID_ATTRIBUTE_NAMES_MAP", "Para Hyphenation No Last Word")
 #define RID_PARA_HYPHENATION_MIN_WORD_LENGTH                NC_("RID_ATTRIBUTE_NAMES_MAP", "Para Hyphenation Min Word Length")
 #define RID_PARA_HYPHENATION_ZONE                           NC_("RID_ATTRIBUTE_NAMES_MAP", "Para Hyphenation Zone")
+#define RID_PARA_HYPHENATION_KEEP                           NC_("RID_ATTRIBUTE_NAMES_MAP", "Para Hyphenation Keep")
 #define RID_PARA_INTEROP_GRAB_BAG                           NC_("RID_ATTRIBUTE_NAMES_MAP", "Para Interop Grab Bag")
 #define RID_PARA_IS_AUTO_FIRST_LINE_INDENT                  NC_("RID_ATTRIBUTE_NAMES_MAP", "Para is Auto First Line Indent")
 #define RID_PARA_IS_CHARACTER_DISTANCE                      NC_("RID_ATTRIBUTE_NAMES_MAP", "Para is Character Distance")
diff --git a/sw/inc/unoprnms.hxx b/sw/inc/unoprnms.hxx
index a6a2cf373e87..b97e2a81dc5e 100644
--- a/sw/inc/unoprnms.hxx
+++ b/sw/inc/unoprnms.hxx
@@ -76,6 +76,7 @@ inline constexpr OUString UNO_NAME_PARA_HYPHENATION_ZONE = u"ParaHyphenationZone
 inline constexpr OUString UNO_NAME_PARA_HYPHENATION_NO_CAPS = u"ParaHyphenationNoCaps"_ustr;
 inline constexpr OUString UNO_NAME_PARA_HYPHENATION_NO_LAST_WORD
     = u"ParaHyphenationNoLastWord"_ustr;
+inline constexpr OUString UNO_NAME_PARA_HYPHENATION_KEEP = u"ParaHyphenationKeep"_ustr;
 inline constexpr OUString UNO_NAME_LEFT_MARGIN = u"LeftMargin"_ustr;
 inline constexpr OUString UNO_NAME_RIGHT_MARGIN = u"RightMargin"_ustr;
 inline constexpr OUString UNO_NAME_GUTTER_MARGIN = u"GutterMargin"_ustr;