commit 195f62ac9322285bf4c6e16ec5081cc4c216e066
Author: Juergen Spitzmueller <sp...@lyx.org>
Date: Sun Jul 15 14:26:29 2018 +0200
Fix bracket output in RTL languages
This is a real mess!
Fixes: #11187
---
src/Paragraph.cpp | 66 ++++++++++++++++++++++++++++++++--------------
src/Paragraph.h | 3 +-
src/output_plaintext.cpp | 2 +-
3 files changed, 49 insertions(+), 22 deletions(-)
diff --git a/src/Paragraph.cpp b/src/Paragraph.cpp
index 2b07456..427818a 100644
--- a/src/Paragraph.cpp
+++ b/src/Paragraph.cpp
@@ -1234,10 +1234,7 @@ void Paragraph::Private::latexSpecialChar(otexstream &
os,
pos_type end_pos,
unsigned int & column)
{
- // With polyglossia, brackets and stuff need not be reversed
- // in RTL scripts (see bug #8251)
- char_type const c = (runparams.use_polyglossia) ?
- owner_->getUChar(bparams, i) : text_[i];
+ char_type const c = owner_->getUChar(bparams, runparams, i);
if (style.pass_thru || runparams.pass_thru
|| contains(style.pass_thru_chars, c)
@@ -1997,32 +1994,60 @@ Font const Paragraph::getLayoutFont
}
-char_type Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
+char_type Paragraph::getUChar(BufferParams const & bparams,
+ OutputParams const & rp,
+ pos_type pos) const
{
char_type c = d->text_[pos];
+
+ // Return unchanged character in LTR languages.
if (!getFontSettings(bparams, pos).isRightToLeft())
return c;
- // FIXME: The arabic special casing is due to the difference of arabic
- // round brackets input introduced in r18599. Check if this should be
- // unified with Hebrew or at least if all bracket types should be
- // handled the same (file format change in either case).
+ // FIXME This is a complete mess due to all the language-specific
+ // special cases. We need to unify this eventually, but this
+ // requires a file format change and some thought.
+ // We also need to unify the input of parentheses in different RTL
+ // languages. Currently, some have their own methods (Arabic:
+ // 18599/lyxsvn, Hebrew: e5f42f67d/lyxgit), some don't (Urdu, Syriac).
+ // Also note that the representation in the LyX file is probably wrong
+ // (see FIXME in TextMetrics::breakRow).
+ // Most likely, we should simply rely on Qt's unicode handling here.
string const & lang = getFontSettings(bparams, pos).language()->lang();
- bool const arabic = lang == "arabic_arabtex" || lang == "arabic_arabi"
- || lang == "farsi";
+
+ // With polyglossia, brackets and stuff need not be reversed in RTL
scripts
+ // FIXME: The special casing for Hebrew parens is due to the special
+ // handling on input (for Hebrew in e5f42f67d/lyxgit); see #8251.
char_type uc = c;
+ if (rp.use_polyglossia) {
+ switch (c) {
+ case '(':
+ if (lang == "hebrew")
+ uc = ')';
+ break;
+ case ')':
+ if (lang == "hebrew")
+ uc = '(';
+ break;
+ }
+ return uc;
+ }
+
+ // In the following languages, brackets don't need to be reversed.
+ // Furthermore, in arabic_arabi, they are transformed to Arabic
+ // Ornate Parentheses (dunno if this is really wanted)
+ bool const reversebrackets = lang != "arabic_arabtex"
+ && lang != "arabic_arabi"
+ && lang != "farsi";
+
switch (c) {
- case '(':
- uc = arabic ? c : ')';
- break;
- case ')':
- uc = arabic ? c : '(';
- break;
case '[':
- uc = ']';
+ if (reversebrackets)
+ uc = ']';
break;
case ']':
- uc = '[';
+ if (reversebrackets)
+ uc = '[';
break;
case '{':
uc = '}';
@@ -3387,7 +3412,8 @@ docstring Paragraph::simpleLyXHTMLOnePar(Buffer const &
buf,
retval += inset->xhtml(xs, np);
}
} else {
- char_type c = getUChar(buf.masterBuffer()->params(), i);
+ char_type c = getUChar(buf.masterBuffer()->params(),
+ runparams, i);
xs << c;
}
font_old = font.fontInfo();
diff --git a/src/Paragraph.h b/src/Paragraph.h
index b818322..2f61083 100644
--- a/src/Paragraph.h
+++ b/src/Paragraph.h
@@ -360,7 +360,8 @@ public:
///
char_type getChar(pos_type pos) const;
/// Get the char, but mirror all bracket characters if it is
right-to-left
- char_type getUChar(BufferParams const &, pos_type pos) const;
+ char_type getUChar(BufferParams const &, OutputParams const &,
+ pos_type pos) const;
/// pos <= size() (there is a dummy font change at the end of each par)
void setFont(pos_type pos, Font const & font);
///
diff --git a/src/output_plaintext.cpp b/src/output_plaintext.cpp
index 15e700e..8c5655d 100644
--- a/src/output_plaintext.cpp
+++ b/src/output_plaintext.cpp
@@ -188,7 +188,7 @@ void writePlaintextParagraph(Buffer const & buf,
if (os.str().size() > max_length)
break;
- char_type c = par.getUChar(buf.params(), i);
+ char_type c = par.getUChar(buf.params(), runparams, i);
if (par.isInset(i) || c == ' ') {
if (runparams.linelen > 0 &&
