X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fmathed%2FMathStream.h;h=ad1baada353dcd214b682442db7def4527a3a0d2;hb=704328d3488c75733ddeb9ad5439b1907e323e39;hp=78b77b780a8f74250563a007e5cd8cd63a343c42;hpb=7a32a8489afcdb60e0e93ed97984a16bf3a87035;p=lyx.git
diff --git a/src/mathed/MathStream.h b/src/mathed/MathStream.h
index 78b77b780a..ad1baada35 100644
--- a/src/mathed/MathStream.h
+++ b/src/mathed/MathStream.h
@@ -59,6 +59,10 @@ public:
bool & firstitem() { return firstitem_; }
///
void addlines(unsigned int);
+ /// record whether we can write an immediately following newline char
+ void canBreakLine(bool breakline) { canbreakline_ = breakline; }
+ /// tell whether we can write an immediately following newline char
+ bool canBreakLine() const { return canbreakline_; }
/// writes space if next thing is isalpha()
void pendingSpace(bool how);
/// writes space if next thing is isalpha()
@@ -75,6 +79,10 @@ public:
void lockedMode(bool locked);
/// tell whether we are allowed to switch mode when producing latex code
bool lockedMode() const { return locked_; }
+ /// tell whether to use only ascii chars when producing latex code
+ void asciiOnly(bool ascii);
+ /// tell whether to use only ascii chars when producing latex code
+ bool asciiOnly() const { return ascii_; }
/// LaTeX encoding
Encoding const * encoding() const { return encoding_; }
private:
@@ -96,6 +104,10 @@ private:
bool textmode_;
/// are we allowed to switch mode when producing latex code?
bool locked_;
+ /// should we use only ascii chars when producing latex code?
+ bool ascii_;
+ /// are we allowed to output an immediately following newline?
+ bool canbreakline_;
///
int line_;
///
@@ -121,7 +133,7 @@ WriteStream & operator<<(WriteStream &, unsigned int);
bool ensureMath(WriteStream & os, bool needs_math_mode = true, bool macro = false);
/// ensure the requested mode, possibly by closing \ensuremath
-int ensureMode(WriteStream & os, InsetMath::mode_type mode, bool locked);
+int ensureMode(WriteStream & os, InsetMath::mode_type mode, bool locked, bool ascii);
/**
@@ -185,6 +197,8 @@ private:
* the mode needs being temporarily switched when a command would not work
* in the current mode. As there are cases where this switching is to be
* avoided, the optional third parameter can be used to lock the mode.
+ * When the mode is locked, the optional fourth parameter specifies whether
+ * strings are to be output by using a suitable ascii representation.
*
* Example 1:
*
@@ -198,6 +212,13 @@ private:
*
* Sets the current mode to text mode and disallows mode switching.
*
+ * Example 3:
+ *
+ * ModeSpecifier specifier(os, TEXT_MODE, true, true);
+ *
+ * Sets the current mode to text mode, disallows mode switching, and outputs
+ * strings as ascii only.
+ *
* At the end of specifier's scope the mode is reset to its previous value.
*/
class ModeSpecifier
@@ -205,13 +226,14 @@ class ModeSpecifier
public:
///
explicit ModeSpecifier(WriteStream & os, InsetMath::mode_type mode,
- bool locked = false)
- : os_(os), oldmodes_(ensureMode(os, mode, locked)) {}
+ bool locked = false, bool ascii = false)
+ : os_(os), oldmodes_(ensureMode(os, mode, locked, ascii)) {}
///
~ModeSpecifier()
{
- os_.textMode(oldmodes_ & 1);
- os_.lockedMode(oldmodes_ & 2);
+ os_.textMode(oldmodes_ & 0x01);
+ os_.lockedMode(oldmodes_ & 0x02);
+ os_.asciiOnly(oldmodes_ & 0x04);
}
private:
///
@@ -246,6 +268,13 @@ public:
};
+/// Throw MathExportException to signal that the attempt to export
+/// some math in the current format did not succeed. E.g., we can't
+/// export xymatrix as MathML, so that will throw, and we'll fall back
+/// to images.
+class MathExportException : public std::exception {};
+
+
class MathStream {
public:
///
@@ -270,9 +299,7 @@ public:
bool inText() const { return in_text_; }
private:
///
- void setTextMode() { in_text_ = true; }
- ///
- void setMathMode() { in_text_ = false; }
+ void setTextMode(bool t) { in_text_ = t; }
///
odocstream & os_;
///
@@ -280,8 +307,6 @@ private:
///
int line_;
///
- char lastchar_;
- ///
bool in_text_;
///
odocstringstream deferred_;
@@ -308,29 +333,86 @@ MathStream & operator<<(MathStream &, ETag const &);
/// A simpler version of ModeSpecifier, for MathML
-// FIXME There are still problems here with nesting, at least
-// potentially. The problem is that true nesting of text mode isn't
-// actually possible. I.e., we can't have:
-//
-// So we have to have:
-//
-// instead, where the last is really a continuation of the first.
-// We'll need some kind of stack to remember all that.
class SetMode {
public:
- ///
- explicit SetMode(MathStream & os, bool text, docstring attrs);
///
explicit SetMode(MathStream & os, bool text);
///
~SetMode();
private:
- ///
- void init(bool, docstring);
///
MathStream & os_;
///
- bool opened_;
+ bool was_text_;
+};
+
+
+class HtmlStream {
+public:
+ ///
+ explicit HtmlStream(odocstream & os);
+ ///
+ void cr();
+ ///
+ odocstream & os() { return os_; }
+ ///
+ int line() const { return line_; }
+ ///
+ int & tab() { return tab_; }
+ ///
+ friend HtmlStream & operator<<(HtmlStream &, char const *);
+ ///
+ void defer(docstring const &);
+ ///
+ void defer(std::string const &);
+ ///
+ docstring deferred() const;
+ ///
+ bool inText() const { return in_text_; }
+private:
+ ///
+ void setTextMode(bool t) { in_text_ = t; }
+ ///
+ odocstream & os_;
+ ///
+ int tab_;
+ ///
+ int line_;
+ ///
+ bool in_text_;
+ ///
+ odocstringstream deferred_;
+ ///
+ friend class SetHTMLMode;
+};
+
+///
+HtmlStream & operator<<(HtmlStream &, MathAtom const &);
+///
+HtmlStream & operator<<(HtmlStream &, MathData const &);
+///
+HtmlStream & operator<<(HtmlStream &, docstring const &);
+///
+HtmlStream & operator<<(HtmlStream &, char const *);
+///
+HtmlStream & operator<<(HtmlStream &, char);
+///
+HtmlStream & operator<<(HtmlStream &, char_type);
+///
+HtmlStream & operator<<(HtmlStream &, MTag const &);
+///
+HtmlStream & operator<<(HtmlStream &, ETag const &);
+
+
+class SetHTMLMode {
+public:
+ ///
+ explicit SetHTMLMode(HtmlStream & os, bool text);
+ ///
+ ~SetHTMLMode();
+private:
+ ///
+ HtmlStream & os_;
///
bool was_text_;
};