Account for old versions of Pygments

[lyx.git] / src / Length.h

diff --git a/src/Length.h b/src/Length.h
index ef17bac760671d55c933f27e92451cc19064eee7..8f192f85c6730d05a68a2102b20b06b8f06371fb 100644 (file)
--- a/src/Length.h
+++ b/src/Length.h
@@ -58,6 +58,7 @@ public:
                PLW, //< Percent of LineWidth
                PTH, //< Percent of TextHeight          // Herbert 2002-05-16
                PPH, //< Percent of PaperHeight         // Herbert 2002-05-16
+               BLS, //< Percent of BaselineSkip        // uwestoehr 2017-04-01
                UNIT_NONE ///< no unit
        };
 
@@ -96,12 +97,15 @@ public:
         *      FontMetrics::em() to get this value.
         */
        int inPixels(int text_width, int em_width = 0) const;
+
        /** return the on-screen size of this length
         *
-        *  This version of the function uses the right EM definition.
+        *  This version of the function uses the current inset width as
+        *  width and the EM value of the current font.
         */
        int inPixels(MetricsBase const &) const;
        /// return the value in Big Postscript points.
+       /// Caution: Inaccurate for em, ex, mu and percent units.
        int inBP() const;
 
        /// return the default unit (centimeter or inch)
@@ -110,6 +114,8 @@ public:
        friend bool isValidLength(std::string const & data, Length * result);
 
 private:
+       /// Convert value to inch for text width and em width given in inch
+       double inInch(double text_width, double em_width) const;
        ///
        double val_;
        ///