]> git.lyx.org Git - lyx.git/blobdiff - src/vspace.C
citation patch from Angus
[lyx.git] / src / vspace.C
index 6106c55cf9c76a22a3d290a0d2c924210c2f88b6..5b4e41e625c2369758b49f561e399a017d0a9b02 100644 (file)
@@ -4,8 +4,8 @@
  * 
  *           LyX, The Document Processor
  *      
- *         Copyright 1995 Matthias Ettrich
- *          Copyright 1995-1999 The LyX Team.
+ *           Copyright 1995 Matthias Ettrich
+ *           Copyright 1995-2000 The LyX Team.
  *
  * ====================================================== */
 
 #include "vspace.h"
 #include "lyxrc.h"
 #include "lyxtext.h"
-#include <cstring>
 #include "BufferView.h"
 #include "support/lstrings.h"
 
-extern LyXRC * lyxrc;
 
 /*  length units
  */
@@ -55,17 +53,23 @@ static LyXLength::UNIT unit[4]   = { LyXLength::UNIT_NONE,
 //static int number_index, unit_index;
 int number_index, unit_index;
 
-static inline void lyx_advance (string & data, unsigned int n)
+
+static inline
+void lyx_advance (string & data, unsigned int n)
 {
        data.erase(0, n);
 }
 
-static inline bool isEndOfData (string const & data)
+
+static inline
+bool isEndOfData (string const & data)
 {
        return frontStrip (data).empty();
 }
 
-static char nextToken (string & data)
+
+static
+char nextToken (string & data)
 {
        data = frontStrip(data);
        if (data.empty())
@@ -92,9 +96,10 @@ static char nextToken (string & data)
                // I really mean assignment ("=") below, not equality!
                if ((i = data.find_last_of("0123456789.")) != string::npos) {
                        if (number_index > 3) return 'E';  // Error
-                        string buffer = data.substr(0, i + 1);
-                       if (sscanf (buffer.c_str(),
-                                   "%f", &number[number_index]) == 1) {
+                        string buffer = data.substr(0, i + 1).c_str();
+                       double x = strToDbl(buffer);
+                       if (x) {
+                               number[number_index] = x;
                                lyx_advance (data, i + 1);
                                ++number_index;
                                return 'n';
@@ -116,26 +121,33 @@ static char nextToken (string & data)
        }
 }
 
-static struct {
+
+struct LaTeXLength {
        char const * pattern;
        int   plus_val_index, minus_val_index,
                plus_uni_index, minus_uni_index;
-} table[] = { { "nu",       0, 0, 0, 0 },
-             { "nu+nu",    2, 0, 2, 0 },
-             { "nu+nu-nu", 2, 3, 2, 3 },
-             { "nu+-nu",   2, 2, 2, 2 },
-             { "nu-nu",    0, 2, 0, 2 },
-             { "nu-nu+nu", 3, 2, 3, 2 },
-             { "nu-+nu",   2, 2, 2, 2 },
-             { "n+nu",     2, 0, 1, 0 },
-             { "n+n-nu",   2, 3, 1, 1 },
-             { "n+-nu",    2, 2, 1, 1 },
-             { "n-nu",     0, 2, 0, 1 },
-             { "n-n+nu",   3, 2, 1, 1 },
-             { "n-+nu",    2, 2, 1, 1 },
-              { "",         0, 0, 0, 0 }   // sentinel, must be empty
 };
 
+
+static
+LaTeXLength table[] = {
+       { "nu",       0, 0, 0, 0 },
+       { "nu+nu",    2, 0, 2, 0 },
+       { "nu+nu-nu", 2, 3, 2, 3 },
+       { "nu+-nu",   2, 2, 2, 2 },
+       { "nu-nu",    0, 2, 0, 2 },
+       { "nu-nu+nu", 3, 2, 3, 2 },
+       { "nu-+nu",   2, 2, 2, 2 },
+       { "n+nu",     2, 0, 1, 0 },
+       { "n+n-nu",   2, 3, 1, 1 },
+       { "n+-nu",    2, 2, 1, 1 },
+       { "n-nu",     0, 2, 0, 1 },
+       { "n-n+nu",   3, 2, 1, 1 },
+       { "n-+nu",    2, 2, 1, 1 },
+       { "",         0, 0, 0, 0 }   // sentinel, must be empty
+};
+
+
 bool isValidGlueLength (string const & data, LyXGlueLength * result)
 {
        // This parser is table-driven.  First, it constructs a "pattern"
@@ -262,6 +274,7 @@ bool isValidLength(string const & data, LyXLength * result)
        return true;
 }
 
+
 /// LyXLength class
 
 LyXLength::LyXLength(string const & data)
@@ -276,18 +289,19 @@ LyXLength::LyXLength(string const & data)
        }
 }
 
-bool LyXLength::operator== (LyXLength const & other) const
-{
-       return (val == other.val &&
-               uni == other.uni);
-}
 
 string LyXLength::asString() const
 {
-       char buffer[20];
-
-       sprintf (buffer, "%g%s", val, unit_name[uni]);
-       return string (buffer);
+#ifdef HAVE_SSTREAM
+       std::ostringstream buffer;
+       buffer << val << unit_name[uni]; // setw?
+       return buffer.str().c_str();
+#else
+       char tbuf[20];
+       ostrstream buffer(tbuf, 20);
+       buffer << val << unit_name[uni] << '\0'; // setw?
+       return buffer.str();
+#endif
 }
 
 
@@ -311,87 +325,101 @@ LyXGlueLength::LyXGlueLength (string const & data)
 }
 
 
-bool LyXGlueLength::operator== (LyXGlueLength const & other) const
-{
-       return (val == other.val && 
-               uni == other.uni &&
-               plus_val  == other.plus_val &&
-               plus_uni  == other.plus_uni &&
-               minus_val == other.minus_val &&
-               minus_uni == other.minus_uni);
-}
-
-
 string LyXGlueLength::asString() const
 {
-       char buffer[20];
-       
+#ifdef HAVE_SSTREAM
+       std::ostringstream buffer;
+#else
+       char tbuf[20];
+       ostrstream buffer(tbuf, 20);
+#endif
        if (plus_val != 0.0)
                if (minus_val != 0.0)
                        if ((uni == plus_uni) && (uni == minus_uni))
                                if (plus_val == minus_val)
-                                       sprintf (buffer, "%g+-%g%s",
-                                                val, plus_val, unit_name[uni]);
+                                       buffer << val << "+-"
+                                              << plus_val << unit_name[uni];
                                else
-                                       sprintf (buffer, "%g+%g-%g%s",
-                                                val, plus_val, minus_val, 
-                                                unit_name[uni]);
+                                       buffer << val
+                                              << '+' << plus_val
+                                              << '-' << minus_val
+                                              << unit_name[uni];
                        else
-                               if ((plus_uni == minus_uni) && (plus_val == minus_val))
-                                       sprintf (buffer, "%g%s+-%g%s",
-                                                val, unit_name[uni],
-                                                plus_val, unit_name[plus_uni]);
+                               if (plus_uni == minus_uni
+                                   && plus_val == minus_val)
+                                       buffer << val << unit_name[uni]
+                                              << "+-" << plus_val
+                                              << unit_name[plus_uni];
+       
                                else
-                                       sprintf (buffer, "%g%s+%g%s-%g%s",
-                                                val,       unit_name[uni],
-                                                plus_val,  unit_name[plus_uni],
-                                                minus_val, unit_name[minus_uni]);
+                                       buffer << val << unit_name[uni]
+                                              << '+' << plus_val
+                                              << unit_name[plus_uni]
+                                              << '-' << minus_val
+                                              << unit_name[minus_uni];
                else 
                        if (uni == plus_uni)
-                               sprintf (buffer, "%g+%g%s",
-                                        val, plus_val, unit_name[uni]);
+                               buffer << val << '+' << plus_val
+                                      << unit_name[uni];
                        else
-                               sprintf (buffer, "%g%s+%g%s",
-                                        val,      unit_name[uni],
-                                        plus_val, unit_name[plus_uni]);
+                               buffer << val << unit_name[uni]
+                                      << '+' << plus_val
+                                      << unit_name[plus_uni];
+       
        else
                if (minus_val != 0.0)
                        if (uni == minus_uni)
-                               sprintf (buffer, "%g-%g%s",
-                                        val, minus_val, unit_name[uni]);
+                               buffer << val << '-' << minus_val
+                                      << unit_name[uni];
+       
                        else
-                               sprintf (buffer, "%g%s-%g%s",
-                                        val,       unit_name[uni],
-                                        minus_val, unit_name[minus_uni]);
+                               buffer << val << unit_name[uni]
+                                      << '-' << minus_val
+                                      << unit_name[minus_uni];
                else
-                       sprintf (buffer, "%g%s", val, unit_name[uni]);
-       return string (buffer);
+                       buffer << val << unit_name[uni];
+#ifdef HAVE_SSTREAM
+       return buffer.str().c_str();
+#else
+       buffer << '\0';
+       return buffer.str();
+#endif
 }
 
 
 string LyXGlueLength::asLatexString() const
 {
-       char buffer[40];
+#ifdef HAVE_SSTREAM
+       std::ostringstream buffer;
+#else
+       char tbuf[40];
+       ostrstream buffer(tbuf, 40);
+#endif
 
        if (plus_val != 0.0)
                if (minus_val != 0.0)
-                       sprintf (buffer, "%g%s plus %g%s minus %g%s",
-                                val, unit_name[uni],
-                                plus_val,  unit_name[plus_uni],
-                                minus_val, unit_name[minus_uni]);
+                       buffer << val << unit_name[uni]
+                              << " plus "
+                              << plus_val << unit_name[plus_uni]
+                              << " minus "
+                              << minus_val << unit_name[minus_uni];
                else
-                       sprintf (buffer, "%g%s plus %g%s",
-                                val,      unit_name[uni],
-                                plus_val, unit_name[plus_uni]);
+                       buffer << val << unit_name[uni]
+                              << " plus "
+                              << plus_val << unit_name[plus_uni];
        else
                if (minus_val != 0.0)
-                       sprintf (buffer, "%g%s minus %g%s",
-                                val,       unit_name[uni],
-                                minus_val, unit_name[minus_uni]);
+                       buffer << val << unit_name[uni]
+                              << " minus "
+                              << minus_val << unit_name[minus_uni];
                else
-                       sprintf (buffer, "%g%s",
-                                val, unit_name[uni]);
-       return string (buffer);
+                       buffer << val << unit_name[uni];
+#ifdef HAVE_SSTREAM
+       return buffer.str().c_str();
+#else
+       buffer << '\0';
+       return buffer.str();
+#endif
 }
 
 
@@ -491,12 +519,23 @@ int VSpace::inPixels(BufferView * bv) const
 {
        // Height of a normal line in pixels (zoom factor considered)
        int height = bv->text->DefaultHeight(); // [pixels]
+       int skip = 0;
+       if (kin == DEFSKIP)
+           skip = bv->buffer()->params.getDefSkip().inPixels(bv);
+
+       return inPixels(height, skip);
+}
 
+int VSpace::inPixels(int default_height, int default_skip) const
+{
+       // Height of a normal line in pixels (zoom factor considered)
+       int height = default_height; // [pixels]
+       
        // Zoom factor specified by user in percent
-       float const zoom = lyxrc->zoom / 100.0; // [percent]
+       float const zoom = lyxrc.zoom / 100.0; // [percent]
 
        // DPI setting for monitor: pixels/inch
-       float const dpi = lyxrc->dpi; // screen resolution [pixels/inch]
+       float const dpi = lyxrc.dpi; // screen resolution [pixels/inch]
 
        // We want the result in pixels
        float result, value;
@@ -505,15 +544,15 @@ int VSpace::inPixels(BufferView * bv) const
        case NONE: return 0;
 
        case DEFSKIP:
-               return bv->buffer()->params.getDefSkip().inPixels(bv);
+               return default_skip;
 
                // This is how the skips are normally defined by
                // LateX.  But there should be some way to change
                // this per document.
-       case SMALLSKIP: return height/4;
-       case MEDSKIP:   return height/2;
+       case SMALLSKIP: return height / 4;
+       case MEDSKIP:   return height / 2;
        case BIGSKIP:   return height;
-       case VFILL:     return 3*height;
+       case VFILL:     return 3 * height;
                // leave space for the vfill symbol
        case LENGTH:
                // Pixel values are scaled so that the ratio