i18nutil/source/utility/unicode.cxx | 5 +++++
include/i18nutil/unicode.hxx | 1 +
sdext/CppunitTest_sdext_pdfimport.mk | 1 +
sdext/Executable_pdf2xml.mk | 1 +
sdext/Executable_pdfunzip.mk | 1 +
sdext/Library_pdfimport.mk | 2 ++
sdext/source/pdfimport/inc/pdfiprocessor.hxx | 2 ++
sdext/source/pdfimport/tree/drawtreevisiting.cxx | 5 +++++
sdext/source/pdfimport/tree/pdfiprocessor.cxx | 17 ++++++++++++++++-
sdext/source/pdfimport/tree/writertreevisiting.cxx | 5 +++++
10 files changed, 39 insertions(+), 1 deletion(-)
New commits:
commit e788317bb58f4e4ad3bf57ee7b0e995cb4407ede
Author: Kevin Suo <suokunl...@126.com>
AuthorDate: Mon Nov 21 23:32:53 2022 +0800
Commit: Kevin Suo <suokunl...@126.com>
CommitDate: Wed Nov 30 13:40:24 2022 +0100
tdf#104597 related: restore the mirroring of Bidi_Mirrored characters
The method PDFIProcessor::mirrorString() was removed, and
::comphelper::string::reverseString was used, by Kevin Suo in commit
69e9925ded584113e52f84ef0ed7c224079fa061.
The old PDFIProcessor::mirrorString() did two things:
1) Reverse the code points in the string. However, due to its use of
iterateCodePoints(&i)
rather than iterateCodePoints(&i, -1) (i.e. iterating in forward rather
than reversed order),
the reverse was not functioning at all.
2) Use GetMirroredChar (i.e. the icu unicode u_charMirror() which was
dropped in
commit 720a093461aadff044ac0b1b7b45cf3d416b3785) to get the mirrored-image
of
characters with the Bidi_Mirrored properties.
Stephan Bergmann restored the #1 in commit
50d73574b6c3d71f9a539c895a15d6fcda22390b
(by introducing comphelper::string::reverseCodePoints). However, the #2 was
not restored.
I do not see a clear reason to drop #2 (at least this is an area I don't
quite familiar
with), so it's better to restore it as well, in *this* commit, named as
SubstituteBidiMirrored.
Change-Id: Ic263097938310e6e04f3b95bb12e4f4e834198f2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/143041
Tested-by: Jenkins
Reviewed-by: Kevin Suo <suokunl...@126.com>
diff --git a/i18nutil/source/utility/unicode.cxx
b/i18nutil/source/utility/unicode.cxx
index 6e002aa69f18..730b5105d52c 100644
--- a/i18nutil/source/utility/unicode.cxx
+++ b/i18nutil/source/utility/unicode.cxx
@@ -97,6 +97,11 @@ unicode::getUnicodeDirection( const sal_Unicode ch ) {
return r;
}
+sal_uInt32 unicode::GetMirroredChar(sal_uInt32 nChar) {
+ nChar = u_charMirror(nChar);
+ return nChar;
+}
+
#define bit(name) (1U << name)
#define UPPERMASK bit(UnicodeType::UPPERCASE_LETTER)
diff --git a/include/i18nutil/unicode.hxx b/include/i18nutil/unicode.hxx
index ebe50ce90384..4d8a84b19c40 100644
--- a/include/i18nutil/unicode.hxx
+++ b/include/i18nutil/unicode.hxx
@@ -43,6 +43,7 @@ public:
static sal_Unicode getUnicodeScriptStart(css::i18n::UnicodeScript type);
static sal_Unicode getUnicodeScriptEnd(css::i18n::UnicodeScript type);
static sal_uInt8 getUnicodeDirection(const sal_Unicode ch);
+ static sal_uInt32 GetMirroredChar(sal_uInt32);
static bool isControl(const sal_Unicode ch);
static bool isAlpha(const sal_Unicode ch);
static bool isSpace(const sal_Unicode ch);
diff --git a/sdext/CppunitTest_sdext_pdfimport.mk
b/sdext/CppunitTest_sdext_pdfimport.mk
index 864fb7084c88..a16e1726bae9 100644
--- a/sdext/CppunitTest_sdext_pdfimport.mk
+++ b/sdext/CppunitTest_sdext_pdfimport.mk
@@ -34,6 +34,7 @@ $(eval $(call gb_CppunitTest_use_libraries,sdext_pdfimport,\
unotest \
tl \
xo \
+ i18nutil \
))
$(eval $(call gb_CppunitTest_use_library_objects,sdext_pdfimport,pdfimport))
diff --git a/sdext/Executable_pdf2xml.mk b/sdext/Executable_pdf2xml.mk
index b2439164a1ed..81e00eca11c0 100644
--- a/sdext/Executable_pdf2xml.mk
+++ b/sdext/Executable_pdf2xml.mk
@@ -32,6 +32,7 @@ $(eval $(call gb_Executable_use_libraries,pdf2xml,\
sal \
tl \
xo \
+ i18nutil \
))
$(eval $(call gb_Executable_use_library_objects,pdf2xml,pdfimport))
diff --git a/sdext/Executable_pdfunzip.mk b/sdext/Executable_pdfunzip.mk
index 1fcca8a863d7..10c179336048 100644
--- a/sdext/Executable_pdfunzip.mk
+++ b/sdext/Executable_pdfunzip.mk
@@ -30,6 +30,7 @@ $(eval $(call gb_Executable_use_libraries,pdfunzip,\
vcl \
tl \
xo \
+ i18nutil \
))
$(eval $(call gb_Executable_use_library_objects,pdfunzip,pdfimport))
diff --git a/sdext/Library_pdfimport.mk b/sdext/Library_pdfimport.mk
index b68c106268ae..dc1290cd0eb1 100644
--- a/sdext/Library_pdfimport.mk
+++ b/sdext/Library_pdfimport.mk
@@ -29,10 +29,12 @@ $(eval $(call gb_Library_use_libraries,pdfimport,\
sal \
tl \
xo \
+ i18nutil \
))
$(eval $(call gb_Library_use_externals,pdfimport,\
boost_headers \
+ icu_headers \
zlib \
$(if $(filter-out WNT MACOSX,$(OS)),fontconfig) \
))
diff --git a/sdext/source/pdfimport/inc/pdfiprocessor.hxx
b/sdext/source/pdfimport/inc/pdfiprocessor.hxx
index fa86a5155905..7cbe7d7a5104 100644
--- a/sdext/source/pdfimport/inc/pdfiprocessor.hxx
+++ b/sdext/source/pdfimport/inc/pdfiprocessor.hxx
@@ -79,6 +79,8 @@ namespace pdfi
static void sortElements( Element* pElement );
+ static OUString SubstituteBidiMirrored(const OUString& rString);
+
private:
void processGlyphLine();
diff --git a/sdext/source/pdfimport/tree/drawtreevisiting.cxx
b/sdext/source/pdfimport/tree/drawtreevisiting.cxx
index 2e56bb449662..8338ba6dbfde 100644
--- a/sdext/source/pdfimport/tree/drawtreevisiting.cxx
+++ b/sdext/source/pdfimport/tree/drawtreevisiting.cxx
@@ -123,7 +123,12 @@ void DrawXmlEmitter::visit( TextElement& elem, const
std::list< std::unique_ptr<
}
if (isRTL) // If so, reverse string
+ {
+ // First, produce mirrored-image for each code point which has the
Bidi_Mirrored property.
+ str = PDFIProcessor::SubstituteBidiMirrored(str);
+ // Then, reverse the code points in the string, in backward order.
str = ::comphelper::string::reverseCodePoints(str);
+ }
m_rEmitContext.rEmitter.beginTag( "text:span", aProps );
diff --git a/sdext/source/pdfimport/tree/pdfiprocessor.cxx
b/sdext/source/pdfimport/tree/pdfiprocessor.cxx
index 164e06d85bde..46a85a753854 100644
--- a/sdext/source/pdfimport/tree/pdfiprocessor.cxx
+++ b/sdext/source/pdfimport/tree/pdfiprocessor.cxx
@@ -33,7 +33,7 @@
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/utils/canvastools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
-#include <vcl/svapp.hxx>
+#include <i18nutil/unicode.hxx>
using namespace com::sun::star;
@@ -695,6 +695,21 @@ void PDFIProcessor::sortElements(Element* pEle)
pEle->Children.sort(lr_tb_sort);
}
+/* Produce mirrored-image for each code point which has the Bidi_Mirrored
property, within a string.
+ This need to be done in forward order.
+*/
+OUString PDFIProcessor::SubstituteBidiMirrored(const OUString& rString)
+{
+ const sal_Int32 nLen = rString.getLength();
+ OUStringBuffer aMirror(nLen);
+
+ for (sal_Int32 i = 0; i < nLen;) {
+ const sal_uInt32 nCodePoint = rString.iterateCodePoints(&i);
+ aMirror.appendUtf32(unicode::GetMirroredChar(nCodePoint));
+ }
+ return aMirror.makeStringAndClear();
+}
+
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sdext/source/pdfimport/tree/writertreevisiting.cxx
b/sdext/source/pdfimport/tree/writertreevisiting.cxx
index 78c1cf00c865..cc2cee18eb6a 100644
--- a/sdext/source/pdfimport/tree/writertreevisiting.cxx
+++ b/sdext/source/pdfimport/tree/writertreevisiting.cxx
@@ -112,7 +112,12 @@ void WriterXmlEmitter::visit( TextElement& elem, const
std::list< std::unique_pt
}
if (isRTL) // If so, reverse string
+ {
+ // First, produce mirrored-image for each code point which has the
Bidi_Mirrored property.
+ str = PDFIProcessor::SubstituteBidiMirrored(str);
+ // Then, reverse the code points in the string, in backward order.
str = ::comphelper::string::reverseCodePoints(str);
+ }
m_rEmitContext.rEmitter.beginTag( "text:span", aProps );
