]> git.lyx.org Git - lyx.git/blobdiff - src/Paragraph.cpp
Const.
[lyx.git] / src / Paragraph.cpp
index 9dfd0938f437e26c84c692aea22e93981a6577ca..dc41fb9e965a48d7784f21333296595a54279ae5 100644 (file)
@@ -314,13 +314,15 @@ public:
 
        /// Output the surrogate pair formed by \p c and \p next to \p os.
        /// \return the number of characters written.
-       int latexSurrogatePair(otexstream & os, char_type c, char_type next,
+       int latexSurrogatePair(BufferParams const &, otexstream & os,
+                              char_type c, char_type next,
                               OutputParams const &);
 
        /// Output a space in appropriate formatting (or a surrogate pair
        /// if the next character is a combining character).
        /// \return whether a surrogate pair was output.
-       bool simpleTeXBlanks(OutputParams const &,
+       bool simpleTeXBlanks(BufferParams const &,
+                            OutputParams const &,
                             otexstream &,
                             pos_type i,
                             unsigned int & column,
@@ -330,8 +332,11 @@ public:
        /// Output consecutive unicode chars, belonging to the same script as
        /// specified by the latex macro \p ltx, to \p os starting from \p i.
        /// \return the number of characters written.
-       int writeScriptChars(otexstream & os, docstring const & ltx,
-                          Change const &, Encoding const &, pos_type & i);
+       int writeScriptChars(BufferParams const &, OutputParams const &,
+                            otexstream & os,
+                            docstring const & ltx,
+                            Change const &, Encoding const &,
+                            std::string const, pos_type & i);
 
        /// This could go to ParagraphParameters if we want to.
        int startTeXParParams(BufferParams const &, otexstream &,
@@ -865,8 +870,9 @@ int Paragraph::eraseChars(pos_type start, pos_type end, bool trackChanges)
 }
 
 
-int Paragraph::Private::latexSurrogatePair(otexstream & os, char_type c,
-               char_type next, OutputParams const & runparams)
+int Paragraph::Private::latexSurrogatePair(BufferParams const & bparams,
+               otexstream & os, char_type c, char_type next,
+               OutputParams const & runparams)
 {
        // Writing next here may circumvent a possible font change between
        // c and next. Since next is only output if it forms a surrogate pair
@@ -883,23 +889,63 @@ int Paragraph::Private::latexSurrogatePair(otexstream & os, char_type c,
                        latex1 = from_ascii(tipashortcut);
                }
        }
-       docstring const latex2 = encoding.latexChar(c).first;
+       docstring latex2 = encoding.latexChar(c).first;
+
        if (docstring(1, next) == latex1) {
-               // the encoding supports the combination
+               // The encoding supports the combination:
+               // output as is (combining char after base char).
                os << latex2 << latex1;
                return latex1.length() + latex2.length();
-       } else if (runparams.local_font &&
-                  runparams.local_font->language()->lang() == "polutonikogreek") {
-               // polutonikogreek only works without the brackets
-               os << latex1 << latex2;
-               return latex1.length() + latex2.length();
-       } else
-               os << latex1 << '{' << latex2 << '}';
-       return latex1.length() + latex2.length() + 2;
+       }
+
+       // Handle combining characters in "script" context (i.e., \textgreek and \textcyrillic)
+       docstring::size_type const brace1 = latex2.find_first_of(from_ascii("{"));
+       docstring::size_type const brace2 = latex2.find_last_of(from_ascii("}"));
+       string script = to_ascii(latex2.substr(1, brace1 - 1));
+       // "Script chars" need to embraced in \textcyrillic and \textgreek notwithstanding
+       // whether they are encodable or not (it only depends on the font encoding)
+       if (!runparams.isFullUnicode())
+               // This will get us a script value to deal with below
+               Encodings::isKnownScriptChar(c, script);
+       int pos = 0;
+       int length = brace2;
+       string fontenc;
+       if (runparams.local_font)
+               fontenc = runparams.local_font->language()->fontenc(bparams);
+       else
+               fontenc = runparams.main_fontenc;
+       docstring scriptmacro;
+       docstring cb;
+       if (script == "textgreek" || script == "textcyrillic") {
+               // We separate the script macro (\text[greek|cyr]) from the rest,
+               // since we need to include the combining char in it (#6463).
+               // This is "the rest":
+               pos = brace1 + 1;
+               length -= pos;
+               latex2 = latex2.substr(pos, length);
+               // We only need the script macro with non-native font encodings
+               if (Encodings::needsScriptWrapper(script, fontenc)) {
+                       scriptmacro = from_ascii("\\" + script + "{");
+                       cb = from_ascii("}");
+               }
+       }
+
+       docstring lb;
+       docstring rb;
+       // polutonikogreek does not play nice with brackets
+       if (!runparams.local_font
+           || runparams.local_font->language()->lang() != "polutonikogreek") {
+               lb = from_ascii("{");
+               rb = from_ascii("}");
+       }
+
+       os << scriptmacro << latex1 << lb << latex2 << rb << cb;
+       return latex1.length() + latex2.length() + lb.length() + rb.length() + cb.length();
 }
 
 
-bool Paragraph::Private::simpleTeXBlanks(OutputParams const & runparams,
+bool Paragraph::Private::simpleTeXBlanks(BufferParams const & bparams,
+                                      OutputParams const & runparams,
                                       otexstream & os,
                                       pos_type i,
                                       unsigned int & column,
@@ -913,7 +959,7 @@ bool Paragraph::Private::simpleTeXBlanks(OutputParams const & runparams,
                char_type next = text_[i + 1];
                if (Encodings::isCombiningChar(next)) {
                        // This space has an accent, so we must always output it.
-                       column += latexSurrogatePair(os, ' ', next, runparams) - 1;
+                       column += latexSurrogatePair(bparams, os, ' ', next, runparams) - 1;
                        return true;
                }
        }
@@ -944,10 +990,13 @@ bool Paragraph::Private::simpleTeXBlanks(OutputParams const & runparams,
 }
 
 
-int Paragraph::Private::writeScriptChars(otexstream & os,
+int Paragraph::Private::writeScriptChars(BufferParams const & bparams,
+                                        OutputParams const & runparams,
+                                        otexstream & os,
                                         docstring const & ltx,
                                         Change const & runningChange,
                                         Encoding const & encoding,
+                                        string const fontenc,
                                         pos_type & i)
 {
        // FIXME: modifying i here is not very nice...
@@ -955,10 +1004,6 @@ int Paragraph::Private::writeScriptChars(otexstream & os,
        // We only arrive here when character text_[i] could not be translated
        // into the current latex encoding (or its latex translation has been forced,)
        // and it belongs to a known script.
-       // TODO: We need \textcyr and \textgreek wrappers also for characters
-       //       that can be encoded in the "LaTeX encoding" but not in the
-       //       current *font encoding*.
-       //       (See #9681 for details and test)
        // Parameter ltx contains the latex translation of text_[i] as specified
        // in the unicodesymbols file and is something like "\textXXX{<spec>}".
        // The latex macro name "textXXX" specifies the script to which text_[i]
@@ -972,12 +1017,8 @@ int Paragraph::Private::writeScriptChars(otexstream & os,
        int pos = 0;
        int length = brace2;
        bool closing_brace = true;
-       if (script == "textgreek" && encoding.latexName() == "iso-8859-7") {
-               // Correct encoding is being used, so we can avoid \textgreek.
-               // TODO: wrong test: we need to check the *font encoding*
-               //       (i.e. the active language and its FontEncoding tag)
-               //       instead of the LaTeX *input encoding*!
-               //       See #9637 for details and test-cases.
+       if (!Encodings::needsScriptWrapper(script, fontenc)) {
+               // Correct font encoding is being used, so we can avoid \text[greek|cyr].
                pos = brace1 + 1;
                length -= pos;
                closing_brace = false;
@@ -1006,6 +1047,18 @@ int Paragraph::Private::writeScriptChars(otexstream & os,
                // Stop here if there is a font attribute or encoding change.
                if (found && cit != end && prev_font != cit->font())
                        break;
+
+               // Check whether we have a combining pair
+               char_type next_next = '\0';
+               if (i + 2 < size) {
+                       next_next = text_[i + 2];
+                       if (Encodings::isCombiningChar(next_next)) {
+                               length += latexSurrogatePair(bparams, os, next, next_next, runparams) - 1;
+                               i += 2;
+                               continue;
+                       }
+               }
+
                docstring const latex = encoding.latexChar(next).first;
                docstring::size_type const b1 =
                                        latex.find_first_of(from_ascii("{"));
@@ -1315,7 +1368,7 @@ void Paragraph::Private::latexSpecialChar(otexstream & os,
                if (i + 1 < int(text_.size())) {
                        next = text_[i + 1];
                        if (Encodings::isCombiningChar(next)) {
-                               column += latexSurrogatePair(os, c, next, runparams) - 1;
+                               column += latexSurrogatePair(bparams, os, c, next, runparams) - 1;
                                ++i;
                                break;
                        }
@@ -1341,11 +1394,21 @@ void Paragraph::Private::latexSpecialChar(otexstream & os,
                                tipas = true;
                        }
                }
-               if (Encodings::isKnownScriptChar(c, script)
-                   && prefixIs(latex.first, from_ascii("\\" + script)))
-                       column += writeScriptChars(os, latex.first,
-                                       running_change, encoding, i) - 1;
-               else if (latex.second
+               string fontenc;
+               if (running_font.language()->lang() == bparams.language->lang())
+                       fontenc = runparams.main_fontenc;
+               else
+                       fontenc = running_font.language()->fontenc(bparams);
+               // "Script chars" need to embraced in \textcyrillic and \textgreek notwithstanding
+               // whether they are encodable or not (it only depends on the font encoding)
+               if (!runparams.isFullUnicode() && Encodings::isKnownScriptChar(c, script)) {
+                       docstring const wrapper = from_ascii("\\" + script + "{");
+                       docstring ltx = latex.first;
+                       if (!prefixIs(ltx, wrapper))
+                               ltx = wrapper + latex.first + from_ascii("}");
+                       column += writeScriptChars(bparams, runparams, os, ltx, running_change,
+                                                  encoding, fontenc, i) - 1;
+               } else if (latex.second
                         && ((!prefixIs(nextlatex, '\\')
                               && !prefixIs(nextlatex, '{')
                               && !prefixIs(nextlatex, '}'))
@@ -1490,6 +1553,7 @@ void Paragraph::Private::validate(LaTeXFeatures & features) const
        // then the contents
        BufferParams const bp = features.runparams().is_child
                ? features.buffer().masterParams() : features.buffer().params();
+       string bscript = "textbaltic";
        for (pos_type i = 0; i < int(text_.size()) ; ++i) {
                char_type c = text_[i];
                if (c == 0x0022) {
@@ -1498,11 +1562,16 @@ void Paragraph::Private::validate(LaTeXFeatures & features) const
                        else if (bp.main_font_encoding() != "T1"
                                 || ((&owner_->getFontSettings(bp, i))->language()->internalFontEncoding()))
                                features.require("textquotedbl");
-               }
-               if (!bp.use_dash_ligatures
-                   && (c == 0x2013 || c == 0x2014)
-                   && bp.useNonTeXFonts
-                   && features.runparams().flavor == OutputParams::XETEX)
+               } else if (Encodings::isKnownScriptChar(c, bscript)){
+                       string fontenc = (&owner_->getFontSettings(bp, i))->language()->fontenc(bp);
+                       if (fontenc.empty())
+                               fontenc = features.runparams().main_fontenc;
+                       if (Encodings::needsScriptWrapper("textbaltic", fontenc))
+                               features.require("textbalticdefs");
+               } else if (!bp.use_dash_ligatures
+                          && (c == 0x2013 || c == 0x2014)
+                          && bp.useNonTeXFonts
+                          && features.runparams().flavor == OutputParams::XETEX)
                        // XeTeX's dash behaviour is determined via a global setting
                        features.require("xetexdashbreakstate");
                BufferEncodings::validate(c, features);
@@ -2626,7 +2695,7 @@ void Paragraph::latex(BufferParams const & bparams,
                        // latexSpecialChar ignores spaces if
                        // style.pass_thru is false.
                        if (i != body_pos - 1) {
-                               if (d->simpleTeXBlanks(runparams, os,
+                               if (d->simpleTeXBlanks(bparams, runparams, os,
                                                i, column, current_font, style)) {
                                        // A surrogate pair was output. We
                                        // must not call latexSpecialChar
@@ -3380,8 +3449,13 @@ bool Paragraph::isHardHyphenOrApostrophe(pos_type pos) const
 
 bool Paragraph::needsCProtection() const
 {
-       // first check the layout of the paragraph
-       if (layout().needcprotect) {
+       // first check the layout of the paragraph, but only in insets
+       InsetText const * textinset = inInset().asInsetText();
+       bool const maintext = textinset
+               ? textinset->text().isMainText()
+               : false;
+
+       if (!maintext && layout().needcprotect) {
                // Environments need cprotection regardless the content
                if (layout().latextype == LATEX_ENVIRONMENT)
                        return true;
@@ -3401,9 +3475,8 @@ bool Paragraph::needsCProtection() const
        // now check whether we have insets that need cprotection
        pos_type size = d->text_.size();
        for (pos_type i = 0; i < size; ++i)
-               if (isInset(i))
-                       if (getInset(i)->needsCProtection())
-                               return true;
+               if (isInset(i) && getInset(i)->needsCProtection(maintext))
+                       return true;
 
        return false;
 }