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Add support for preview.sty 0.73, #ifdef-ed out.

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4876 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Angus Leeming 2002-08-06 12:55:28 +00:00
parent a99f3cc3c6
commit 7d1204efef
2 changed files with 113 additions and 20 deletions
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5
src/graphics/ChangeLog
View File

@ -1,3 +1,8 @@
2002-08-06 Angus Leeming <leeming@lyx.org>
* PreviewLoader.C: add support for preview.sty 0.73 (currently
#ifdef-ed out, awaiting the formal release).
2002-08-05 Angus Leeming <leeming@lyx.org>
* PreviewLoader.C (dumpPreamble): add lyx to the list of options output

128
src/graphics/PreviewLoader.C
View File

@ -12,11 +12,17 @@
#pragma implementation
#endif
// Set to 1 if using preview.sty >= 0.73 and a version of lyxpreview2ppm.sh
// that extracts the metrics info from the latex log file.
#define USING_NEW_PREVIEW_STY 0
#include "PreviewLoader.h"
#include "PreviewImage.h"
#include "buffer.h"
#if !USING_NEW_PREVIEW_STY
#include "bufferparams.h"
#endif
#include "converter.h"
#include "debug.h"
#include "lyxrc.h"
@ -70,7 +76,9 @@ typedef list<string> PendingSnippets;
typedef vector<StrPair> BitmapFile;
#if !USING_NEW_PREVIEW_STY
double setFontScalingFactor(Buffer &);
#endif
string const unique_filename(string const bufferpath);
@ -313,7 +321,12 @@ namespace grfx {
PreviewLoader::Impl::Impl(PreviewLoader & p, Buffer const & b)
: parent_(p), buffer_(b), font_scaling_factor_(0.0)
{
#if USING_NEW_PREVIEW_STY
font_scaling_factor_ = 0.01 * lyxrc.dpi * lyxrc.zoom *
lyxrc.preview_scale_factor;
#else
font_scaling_factor_ = setFontScalingFactor(const_cast<Buffer &>(b));
#endif
lyxerr[Debug::GRAPHICS] << "The font scaling factor is "
<< font_scaling_factor_ << endl;
@ -661,6 +674,7 @@ Converter const * setConverter()
}
#if !USING_NEW_PREVIEW_STY
double setFontScalingFactor(Buffer & buffer)
{
double scale_factor = 0.01 * lyxrc.dpi * lyxrc.zoom *
@ -719,6 +733,7 @@ double setFontScalingFactor(Buffer & buffer)
return scaling;
}
#endif
void setAscentFractions(vector<double> & ascent_fractions,
@ -730,37 +745,110 @@ void setAscentFractions(vector<double> & ascent_fractions,
vector<double>::iterator end = ascent_fractions.end();
fill(it, end, 0.5);
ifstream ifs(metrics_file.c_str());
if (!ifs.good()) {
lyxerr[Debug::GRAPHICS] << "setAscentFractions("
<< metrics_file << ")\n"
<< "Unable to open file!"
<< endl;
ifstream in(metrics_file.c_str());
if (!in.good()) {
lyxerr[Debug::GRAPHICS]
<< "setAscentFractions(" << metrics_file << ")\n"
<< "Unable to open file!" << endl;
return;
}
bool error = false;
#if USING_NEW_PREVIEW_STY
// Tightpage dimensions affect all subsequent dimensions
int tp_ascent;
int tp_descent;
int snippet_counter = 0;
while (!in.eof()) {
// Expecting lines of the form
// Preview: Tightpage tp_bl_x tp_bl_y tp_tr_x tp_tr_y
// Preview: Snippet id ascent descent width
string preview;
string type;
in >> preview >> type;
if (!in.good())
// eof after all
break;
error = preview != "Preview:"
|| (type != "Tightpage" && type != "Snippet");
if (error)
break;
if (type == "Tightpage") {
int dummy;
in >> dummy >> tp_descent >> dummy >> tp_ascent;
error = !in.good();
if (error)
break;
} else {
int dummy;
int snippet_id;
int ascent;
int descent;
in >> snippet_id >> ascent >> descent >> dummy;
error = !in.good() || ++snippet_counter != snippet_id;
if (error)
break;
double const a = ascent + tp_ascent;
double const d = descent - tp_descent;
if (!lyx::float_equal(a + d, 0, 0.1))
*it = a / (a + d);
if (++it == end)
break;
}
}
#else
int snippet_counter = 0;
for (; it != end; ++it) {
// Extracting lines of the form
// %%Page id: tp_bl_x tp_bl_y tp_tr_x tp_tr_y asc desc width
string page;
string page_id;
int dummy;
double ascent;
double descent;
int tp_ascent;
int tp_descent;
int ascent;
int descent;
in >> page >> page_id
>> dummy >> tp_descent >> dummy >> tp_ascent
>> ascent >> descent >> dummy;
ifs >> page >> page_id >> dummy >> dummy >> dummy >> dummy
>> ascent >> descent >> dummy;
page_id = rtrim(page_id, ":");
if (!ifs.good() ||
page != "%%Page" ||
!isStrUnsignedInt(rtrim(page_id, ":"))) {
lyxerr[Debug::GRAPHICS] << "setAscentFractions("
<< metrics_file << ")\n"
<< "Error reading file!"
<< endl;
error = !in.good()
|| !isStrUnsignedInt(page_id);
if (error)
break;
}
if (ascent + descent != 0)
*it = ascent / (ascent + descent);
int const snippet_id = strToInt(page_id);
error = page != "%%Page"
|| ++snippet_counter != snippet_id;
if (error)
break;
double const a = ascent + tp_ascent;
double const d = descent - tp_descent;
if (!lyx::float_equal(a + d, 0, 0.1))
*it = a / (a + d);
}
#endif
if (error) {
lyxerr[Debug::GRAPHICS]
<< "setAscentFractions(" << metrics_file << ")\n"
<< "Error reading file!\n" << endl;
}
}