// -*- C++ -*-
/* This file is part of
- * ======================================================
+ * ======================================================
*
* LyX, The Document Processor
*
- * Copyright (C) 1995 Matthias Ettrich
- * Copyright (C) 1995-1998 The LyX Team.
+ * Copyright 1995 Matthias Ettrich
+ * Copyright 1995-2000 The LyX Team.
*
- *======================================================*/
+ * ====================================================== */
#include <config.h>
#include "vspace.h"
#include "lyxrc.h"
#include "lyxtext.h"
-#include <stdio.h>
-#include <string.h>
#include "BufferView.h"
+#include "support/lstrings.h"
-extern LyXRC * lyxrc;
-extern BufferView *current_view;
-
-// $Id: vspace.C,v 1.1 1999/09/27 18:44:38 larsbj Exp $
-
-#if !defined(lint) && !defined(WITH_WARNINGS)
-static char vcid[] = "$Id: vspace.C,v 1.1 1999/09/27 18:44:38 larsbj Exp $";
-#endif /* lint */
/* length units
*/
-static const int num_units = int(LyXLength::UNIT_NONE);
+static const int num_units = LyXLength::UNIT_NONE;
// I am not sure if "mu" should be possible to select (Lgb)
-static char const* unit_name[num_units] = { "sp", "pt", "bp", "dd",
- "mm", "pc", "cc", "cm",
- "in", "ex", "em", "mu" };
+static char const * unit_name[num_units] = { "sp", "pt", "bp", "dd",
+ "mm", "pc", "cc", "cm",
+ "in", "ex", "em", "mu" };
-LyXLength::UNIT unitFromString (LString const & data)
+LyXLength::UNIT unitFromString (string const & data)
{
- int i=0;
- while ((i<num_units) && (data != unit_name[i])) i++;
- return (LyXLength::UNIT)i;
+ int i = 0;
+ while ((i < num_units) && (data != unit_name[i])) ++i;
+ return static_cast<LyXLength::UNIT>(i);
}
/* The following static items form a simple scanner for
//static int number_index, unit_index;
int number_index, unit_index;
-static void advance (LString& data, const int n)
+
+static inline
+void lyx_advance(string & data, unsigned int n)
{
- if (data.length() <= n)
- data.clean();
- else
- data.substring (n, data.length()-1);
+ data.erase(0, n);
}
-static bool isEndOfData (LString& data)
+
+static inline
+bool isEndOfData(string const & data)
{
- data.frontStrip (' ');
- return data.empty();
+ return frontStrip(data).empty();
}
-static char nextToken (LString& data)
-{
- data.frontStrip (' ');
+static
+char nextToken(string & data)
+{
+ data = frontStrip(data);
if (data.empty())
return '\0';
else if (data[0] == '+') {
- advance (data, 1);
+ lyx_advance(data, 1);
return '+';
- }
- else if (data.prefixIs ("plus")) {
- advance (data, 4);
+ } else if (prefixIs(data, "plus")) {
+ lyx_advance(data, 4);
return '+';
- }
- else if (data[0] == '-') {
- advance (data, 1);
+ } else if (data[0] == '-') {
+ lyx_advance(data, 1);
return '-';
- }
- else if (data.prefixIs ("minus")) {
- advance (data, 5);
+ } else if (prefixIs(data, "minus")) {
+ lyx_advance(data, 5);
return '-';
- }
- else {
- int i;
-
- // I really mean assignment ("=") below, not equality!
-
- if ((i = strspn (data.c_str(), "0123456789."))) {
- if (number_index > 3) return 'E'; // Error
- LString buffer = data;
- buffer.substring (0, i-1);
- if (sscanf (buffer.c_str(),
- "%f", &number[number_index]) == 1) {
- advance (data, i);
- number_index++;
+ } else {
+ string::size_type i = data.find_first_not_of("0123456789.");
+
+ if (i != 0) {
+ if (number_index > 3) return 'E';
+
+ string buffer;
+
+ // we have found some number
+ if (i == string::npos) {
+ buffer = data;
+ i = data.size() + 1;
+ } else
+ buffer = data.substr(0, i);
+
+ lyx_advance(data, i);
+
+ if (isStrDbl(buffer)) {
+ number[number_index] = strToDbl(buffer);
+ ++number_index;
return 'n';
- } else
- return 'E'; // Error
- } else if ((i = strspn (data.c_str(),
- "abcdefghijklmnopqrstuvwxyz"))) {
- if (unit_index > 3) return 'E'; // Error
- LString buffer = data; buffer.substring (0, i-1);
- unit[unit_index] = unitFromString (buffer);
+ } else return 'E';
+ }
+
+ i = data.find_first_not_of("abcdefghijklmnopqrstuvwxyz");
+ if (i != 0) {
+ if (unit_index > 3) return 'E';
+
+ string buffer;
+
+ // we have found some alphabetical string
+ if (i == string::npos) {
+ buffer = data;
+ i = data.size() + 1;
+ } else
+ buffer = data.substr(0, i);
+
+ // possibly we have "mmplus" string or similar
+ if (buffer.size() > 5 && (buffer.substr(2,4) == string("plus") || buffer.substr(2,5) == string("minus"))) {
+ lyx_advance(data, 2);
+ unit[unit_index] = unitFromString(buffer.substr(0, 2));
+ } else {
+ lyx_advance(data, i);
+ unit[unit_index] = unitFromString(buffer);
+ }
+
if (unit[unit_index] != LyXLength::UNIT_NONE) {
- advance (data, i);
- unit_index++;
+ ++unit_index;
return 'u';
- } else
- return 'E'; // Error
- } else
- return 'E'; // Error
+ } else return 'E'; // Error
+ }
+ return 'E'; // Error
}
}
-static struct {
- char const* pattern;
+
+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
+ plus_uni_index, minus_uni_index;
};
-bool isValidGlueLength (LString const & data, LyXGlueLength* result)
+
+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"
// that describes the sequence of tokens in "data". For example,
// forward approach leads to very long, tedious code that would be
// much harder to understand and maintain. (AS)
- LString buffer = data;
- buffer.frontStrip(' ');
+ if (data.empty())
+ return true;
+ string buffer = frontStrip(data);
// To make isValidGlueLength recognize negative values as
// the first number this little hack is needed:
short val_sign = 1; // positive as default
- switch(buffer[0]) {
+ switch (buffer[0]) {
case '-':
- advance(buffer, 1);
+ lyx_advance(buffer, 1);
val_sign = -1;
break;
case '+':
- advance(buffer, 1);
+ lyx_advance(buffer, 1);
// fall through
default:
// no action
if (pattern_index > 20) return false;
pattern[pattern_index] = nextToken (buffer);
if (pattern[pattern_index] == 'E') return false;
- pattern_index++;
+ ++pattern_index;
}
pattern[pattern_index] = '\0';
// search "pattern" in "table"
table_index = 0;
- while (strcmp (pattern, table[table_index].pattern)) {
- table_index++;
+ while (compare(pattern, table[table_index].pattern)) {
+ ++table_index;
if (!*table[table_index].pattern) return false;
}
// is zero, the corresponding array value is zero or UNIT_NONE,
// so we needn't check this.
if (result) {
- result->val = number[1] * val_sign;
- result->uni = unit[1];
- result->plus_val = number[table[table_index].plus_val_index];
- result->minus_val = number[table[table_index].minus_val_index];
- result->plus_uni = unit [table[table_index].plus_uni_index];
- result->minus_uni = unit [table[table_index].minus_uni_index];
+ result->val = number[1] * val_sign;
+ result->uni = unit[1];
+ result->plus_val = number[table[table_index].plus_val_index];
+ result->minus_val = number[table[table_index].minus_val_index];
+ result->plus_uni = unit [table[table_index].plus_uni_index];
+ result->minus_uni = unit [table[table_index].minus_uni_index];
}
return true;
}
-bool isValidLength(LString const & data, LyXLength* result)
+bool isValidLength(string const & data, LyXLength * result)
{
/// This is a trimmed down version of isValidGlueLength.
/// The parser may seem overkill for lengths without
/// glue, but since we already have it, using it is
/// easier than writing something from scratch.
- LString buffer = data;
+ string buffer(data);
int pattern_index = 0;
char pattern[3];
// To make isValidLength recognize negative values
// this little hack is needed:
short val_sign = 1; // positive as default
- switch(buffer[0]) {
+ switch (buffer[0]) {
case '-':
- advance(buffer, 1);
+ lyx_advance(buffer, 1);
val_sign = -1;
break;
case '+':
- advance(buffer, 1);
+ lyx_advance(buffer, 1);
// fall through
default:
// no action
if (pattern_index > 2) return false;
pattern[pattern_index] = nextToken (buffer);
if (pattern[pattern_index] == 'E') return false;
- pattern_index++;
+ ++pattern_index;
}
pattern[pattern_index] = '\0';
// only the most basic pattern is accepted here
- if (strcmp (pattern, "nu") != 0) return false;
+ if (compare(pattern, "nu") != 0) return false;
// It _was_ a correct length string.
// Store away the values we found.
if (result) {
- result->val = number[1]*val_sign;
- result->uni = unit[1];
+ result->val = number[1] * val_sign;
+ result->uni = unit[1];
}
return true;
}
+
/// LyXLength class
-LyXLength::LyXLength(LString const & data)
+LyXLength::LyXLength(string const & data)
{
LyXLength tmp;
}
}
-bool LyXLength::operator== (LyXLength other)
-{
- return (this->val == other.val)
- && (this->uni == other.uni);
-}
-LString LyXLength::asString() const
+string const LyXLength::asString() const
{
- char buffer[20];
-
- sprintf (buffer, "%g%s", val, unit_name[uni]);
- return LString (buffer);
+ std::ostringstream buffer;
+ buffer << val << unit_name[uni]; // setw?
+ return buffer.str().c_str();
}
/* LyXGlueLength class
*/
-LyXGlueLength::LyXGlueLength (LString const & data)
+LyXGlueLength::LyXGlueLength (string const & data)
{
LyXGlueLength tmp(0.0, PT);
if (!isValidGlueLength (data, &tmp))
return; // should raise an exception
else {
- val=tmp.val;
- uni=tmp.uni;
- plus_val =tmp.plus_val;
- plus_uni =tmp.plus_uni;
- minus_val=tmp.minus_val;
- minus_uni=tmp.minus_uni;
+ val = tmp.val;
+ uni = tmp.uni;
+ plus_val = tmp.plus_val;
+ plus_uni = tmp.plus_uni;
+ minus_val = tmp.minus_val;
+ minus_uni = tmp.minus_uni;
}
}
-bool LyXGlueLength::operator== (LyXGlueLength other)
+string const LyXGlueLength::asString() const
{
- return (this->val == other.val)
- && (this->uni == other.uni)
- && (this->plus_val == other.plus_val)
- && (this->plus_uni == other.plus_uni)
- && (this->minus_val == other.minus_val)
- && (this->minus_uni == other.minus_uni);
-}
+ std::ostringstream buffer;
-
-LString LyXGlueLength::asString () const
-{
- char buffer[20];
-
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]);
- else
- sprintf (buffer, "%g+%g-%g%s",
- 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]);
- 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]);
- else
- if (uni == plus_uni)
- sprintf (buffer, "%g+%g%s",
- val, plus_val, unit_name[uni]);
- else
- sprintf (buffer, "%g%s+%g%s",
- val, unit_name[uni],
- plus_val, unit_name[plus_uni]);
+ if (minus_val != 0.0)
+ if ((uni == plus_uni) && (uni == minus_uni))
+ if (plus_val == minus_val)
+ buffer << val << "+-"
+ << plus_val << unit_name[uni];
+ else
+ buffer << val
+ << '+' << plus_val
+ << '-' << minus_val
+ << unit_name[uni];
+ else
+ if (plus_uni == minus_uni
+ && plus_val == minus_val)
+ buffer << val << unit_name[uni]
+ << "+-" << plus_val
+ << unit_name[plus_uni];
+
+ else
+ buffer << val << unit_name[uni]
+ << '+' << plus_val
+ << unit_name[plus_uni]
+ << '-' << minus_val
+ << unit_name[minus_uni];
+ else
+ if (uni == plus_uni)
+ buffer << val << '+' << plus_val
+ << unit_name[uni];
+ else
+ 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]);
+ if (minus_val != 0.0)
+ if (uni == minus_uni)
+ buffer << val << '-' << minus_val
+ << unit_name[uni];
+
+ else
+ buffer << val << unit_name[uni]
+ << '-' << minus_val
+ << unit_name[minus_uni];
else
- sprintf (buffer, "%g%s-%g%s",
- val, unit_name[uni],
- minus_val, unit_name[minus_uni]);
- else
- sprintf (buffer, "%g%s", val, unit_name[uni]);
- return LString (buffer);
+ buffer << val << unit_name[uni];
+
+ return buffer.str().c_str();
}
-LString LyXGlueLength::asLatexString() const
+string const LyXGlueLength::asLatexString() const
{
- char buffer[40];
+ std::ostringstream buffer;
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 LString (buffer);
+ buffer << val << unit_name[uni];
+
+ return buffer.str().c_str();
}
/* VSpace class
*/
-VSpace::VSpace (LString const & data)
+VSpace::VSpace (string const & data)
: kin (NONE), len (0.0, LyXLength::PT)
{
+ kp = false;
+ if (data.empty())
+ return;
float value;
- LString input = data;
+ string input = strip(data);
- input.strip(' ');
int length = input.length();
if (length > 1 && input[length-1] == '*') {
kp = true;
- input.substring (0, length-2);
- } else
- kp = false;
-
- if (input.prefixIs ("defskip")) kin = DEFSKIP;
- else if (input.prefixIs ("smallskip")) kin = SMALLSKIP;
- else if (input.prefixIs ("medskip")) kin = MEDSKIP;
- else if (input.prefixIs ("bigskip")) kin = BIGSKIP;
- else if (input.prefixIs ("vfill")) kin = VFILL;
+ input.erase(length - 1);
+ }
+
+ if (prefixIs (input, "defskip")) kin = DEFSKIP;
+ else if (prefixIs (input, "smallskip")) kin = SMALLSKIP;
+ else if (prefixIs (input, "medskip")) kin = MEDSKIP;
+ else if (prefixIs (input, "bigskip")) kin = BIGSKIP;
+ else if (prefixIs (input, "vfill")) kin = VFILL;
else if (isValidGlueLength (input, &len))
kin = LENGTH;
- else if (sscanf (input.c_str(), "%f", &value) == 1) {
+ else if (sscanf(input.c_str(), "%f", &value) == 1) {
// This last one is for reading old .lyx files
// without units in added_space_top/bottom.
// Let unit default to centimeters here.
}
-bool VSpace::operator== (VSpace other)
+bool VSpace::operator==(VSpace const & other) const
{
if (this->kin == other.kin)
if (this->kin == LENGTH)
}
-LString VSpace::asLyXCommand() const
+string const VSpace::asLyXCommand() const
{
- LString result;
+ string result;
switch (kin) {
case NONE: break;
}
-LString VSpace::asLatexCommand() const
+string const VSpace::asLatexCommand(BufferParams const & params) const
{
switch (kin) {
- case NONE: return LString();
+ case NONE: return string();
case DEFSKIP:
- return current_view->currentBuffer()->params.getDefSkip().asLatexCommand();
+ return params.getDefSkip().asLatexCommand(params);
case SMALLSKIP: return kp ? "\\vspace*{\\smallskipamount}"
- : "\\smallskip{}";
+ : "\\smallskip{}";
case MEDSKIP: return kp ? "\\vspace*{\\medskipamount}"
- : "\\medskip{}";
+ : "\\medskip{}";
case BIGSKIP: return kp ? "\\vspace*{\\bigskipamount}"
- : "\\bigskip{}";
+ : "\\bigskip{}";
case VFILL: return kp ? "\\vspace*{\\fill}"
- : "\\vfill{}";
+ : "\\vfill{}";
case LENGTH: return kp ? "\\vspace*{" + len.asLatexString() + '}'
- : "\\vspace{" + len.asLatexString() + '}';
+ : "\\vspace{" + len.asLatexString() + '}';
}
- return LString(); // should never be reached
+ return string(); // should never be reached
}
-int VSpace::inPixels() const
+int VSpace::inPixels(BufferView * bv) const
{
// Height of a normal line in pixels (zoom factor considered)
- int height = current_view->currentBuffer()->text->DefaultHeight(); // [pixels]
+ 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;
case NONE: return 0;
case DEFSKIP:
- return current_view->currentBuffer()->params.getDefSkip().inPixels();
+ 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;
+ // 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 BIGSKIP: return height;
- case VFILL: return 3*height;
- // leave space for the vfill symbol
+ case VFILL: return 3 * height;
+ // leave space for the vfill symbol
case LENGTH:
// Pixel values are scaled so that the ratio
// between lengths and font sizes on the screen
case LyXLength::DD:
// Didot: 1157dd = 1238 pt?
result = zoom * dpi * value
- / (72.27/(0.376 * 2.845)); // 67.559735
+ / (72.27 / (0.376 * 2.845)); // 67.559735
break;
case LyXLength::MM:
// Millimeter: 1 mm = 1/25.4 inch
case LyXLength::PC:
// Pica: 1 pc = 12 pt
result = zoom * dpi * value
- / (72.27/12); // 6.0225
+ / (72.27 / 12); // 6.0225
break;
case LyXLength::CC:
// Cicero: 1 cc = 12 dd
result = zoom * dpi * value
- / (72.27/ (12*0.376*2.845)); // 5.6299779
+ / (72.27 / (12 * 0.376 * 2.845)); // 5.6299779
break;
case LyXLength::CM:
// Centimeter: 1 cm = 1/2.54 inch
result = zoom * value * height / 2; // Why 2?
break;
case LyXLength::MU: // This is probably only allowed in
- // math mode
+ // math mode
result = zoom * value * height;
break;
case LyXLength::UNIT_NONE: