* ======================================================
*
* LyX, The Document Processor
- *
+ *
* Copyright 1995 Matthias Ettrich
* Copyright 1995-2001 The LyX Team.
*
#endif
#include "lyxlength.h"
+#include "lengthcommon.h"
+#include "lyxrc.h"
-#include "Lsstream.h"
-
-#include <cmath>
-
-namespace {
-// this is now here and in lyxgluelength.C
-
-int const num_units = LyXLength::UNIT_NONE;
+#include "support/lstrings.h"
-// I am not sure if "mu" should be possible to select (Lgb)
-char const * unit_name[num_units] = { "sp", "pt", "bp", "dd",
- "mm", "pc", "cc", "cm",
- "in", "ex", "em", "mu",
- "%", "c%", "p%", "l%" };
+#include "Lsstream.h"
+#include <cstdlib>
-LyXLength::UNIT unitFromString(string const & data)
-{
- int i = 0;
- while (i < num_units && data != unit_name[i])
- ++i;
- return static_cast<LyXLength::UNIT>(i);
-}
-
-}
-
+using std::abs;
LyXLength::LyXLength()
: val_(0), unit_(LyXLength::PT)
{}
+#ifndef NO_PEXTRA_REALLY
+// compatibility stuff < version 1.2.0pre and for
+// "old" 1.2.0 files before the pre
+namespace {
+string const convertOldRelLength(string const & oldLength)
+{
+ // we can have only one or none of the following
+ if (oldLength.find("c%") != string::npos) {
+ return subst(oldLength,"c%","col%");
+
+ } else if (oldLength.find("t%") != string::npos) {
+ if (oldLength.find("text%") != string::npos)
+ return oldLength;
+ else
+ return subst(oldLength,"t%","text%");
+
+ } else if (oldLength.find("l%") != string::npos) {
+ if (oldLength.find("col%") != string::npos)
+ return oldLength;
+ else
+ return subst(oldLength,"l%","line%");
+
+ } else if (oldLength.find("p%") != string::npos)
+ return subst(oldLength,"p%","page%");
+
+ return oldLength;
+}
+} // end anon
+#endif
+
LyXLength::LyXLength(string const & data)
+ : val_(0), unit_(LyXLength::PT)
{
LyXLength tmp;
-
+
+#ifndef NO_PEXTRA_REALLY
+ // this is needed for 1.1.x minipages with width like %t
+ if (!isValidLength (convertOldRelLength(data), &tmp))
+#else
if (!isValidLength (data, &tmp))
+#endif
+ if (!isValidLength (convertOldRelLength(data), &tmp))
return; // should raise an exception
val_ = tmp.val_;
string const LyXLength::asLatexString() const
{
ostringstream buffer;
- switch(unit_) {
+ switch (unit_) {
case PW:
+ buffer << abs(static_cast<int>(val_/100)) << "."
+ << abs(static_cast<int>(val_)%100) << "\\textwidth";
+ break;
case PE:
buffer << abs(static_cast<int>(val_/100)) << "."
<< abs(static_cast<int>(val_)%100) << "\\columnwidth";
break;
case PP:
buffer << abs(static_cast<int>(val_/100)) << "."
- << abs(static_cast<int>(val_)%100) << "\\pagewidth";
+ << abs(static_cast<int>(val_)%100) << "\\paperwidth";
break;
case PL:
buffer << abs(static_cast<int>(val_/100)) << "."
}
+bool LyXLength::zero() const
+{
+ return val_ == 0.0;
+}
+
+
+int LyXLength::inPixels(int default_width, int default_height) const
+{
+ // Zoom factor specified by user in percent
+ double const zoom = lyxrc.zoom / 100.0; // [percent]
+
+ // DPI setting for monitor: pixels/inch
+ double const dpi = lyxrc.dpi; // screen resolution [pixels/inch]
+
+ // Pixel values are scaled so that the ratio
+ // between lengths and font sizes on the screen
+ // is the same as on paper.
+
+ // we don't care about sign of value, we
+ // display negative space with text too
+ double result = 0.0;
+ int val_sign = val_ < 0.0 ? -1 : 1;
+
+ switch (unit_) {
+ case LyXLength::SP:
+ // Scaled point: sp = 1/65536 pt
+ result = zoom * dpi * val_
+ / (72.27 * 65536); // 4736286.7
+ break;
+ case LyXLength::PT:
+ // Point: 1 pt = 1/72.27 inch
+ result = zoom * dpi * val_
+ / 72.27; // 72.27
+ break;
+ case LyXLength::BP:
+ // Big point: 1 bp = 1/72 inch
+ result = zoom * dpi * val_
+ / 72; // 72
+ break;
+ case LyXLength::DD:
+ // Didot: 1157dd = 1238 pt?
+ result = zoom * dpi * val_
+ / (72.27 / (0.376 * 2.845)); // 67.559735
+ break;
+ case LyXLength::MM:
+ // Millimeter: 1 mm = 1/25.4 inch
+ result = zoom * dpi * val_
+ / 25.4; // 25.4
+ break;
+ case LyXLength::PC:
+ // Pica: 1 pc = 12 pt
+ result = zoom * dpi * val_
+ / (72.27 / 12); // 6.0225
+ break;
+ case LyXLength::CC:
+ // Cicero: 1 cc = 12 dd
+ result = zoom * dpi * val_
+ / (72.27 / (12 * 0.376 * 2.845)); // 5.6299779
+ break;
+ case LyXLength::CM:
+ // Centimeter: 1 cm = 1/2.54 inch
+ result = zoom * dpi * val_
+ / 2.54; // 2.54
+ break;
+ case LyXLength::IN:
+ // Inch
+ result = zoom * dpi * val_;
+ break;
+ case LyXLength::EX:
+ // Ex: The height of an "x"
+ result = zoom * val_ * default_height / 2; // what to / width?
+ break;
+ case LyXLength::EM: // what to / width?
+ // Em: The width of an "m"
+ result = zoom * val_ * default_height / 2; // Why 2?
+ break;
+ case LyXLength::MU: // This is probably only allowed in
+ // math mode
+ result = zoom * val_ * default_height;
+ break;
+ case LyXLength::PW: // Always % of workarea
+ case LyXLength::PE:
+ case LyXLength::PP:
+ case LyXLength::PL:
+ result = val_ * default_width / 100;
+ break;
+ case LyXLength::UNIT_NONE:
+ result = 0; // this cannot happen
+ break;
+ }
+ return static_cast<int>(result * val_sign + 0.5);
+}
+
+
+int LyXLength::inBP() const
+{
+ // return any LyXLength value as a one with
+ // the PostScript point, called bp (big points)
+ double result = 0.0;
+ int val_sign = val_ < 0.0 ? -1 : 1;
+ switch (unit_) {
+ case LyXLength::CM:
+ // 1bp = 0.2835cm
+ result = val_ * 28.346;
+ break;
+ case LyXLength::MM:
+ // 1bp = 0.02835mm
+ result = val_ * 2.8346;
+ break;
+ case LyXLength::IN:
+ // 1pt = 1/72in
+ result = val_ * 72.0;
+ break;
+ default:
+ // no other than bp possible
+ result = val_;
+ break;
+ }
+ return static_cast<int>(result * val_sign + 0.5);
+}
+
+
bool operator==(LyXLength const & l1, LyXLength const & l2)
{
return l1.value() == l2.value() && l1.unit() == l2.unit();
}
+
+
+bool operator!=(LyXLength const & l1, LyXLength const & l2)
+{
+ return !(l1 == l2);
+}