-/*
- * \file PreviewLoader.C
- * Copyright 2002 the LyX Team
- * Read the file COPYING
+/**
+ * \file PreviewLoader.C
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
*
- * \author Angus Leeming <leeming@lyx.org>
+ * \author Angus Leeming
+ *
+ * Full author contact details are available in file CREDITS.
*/
#include <config.h>
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
#include "PreviewLoader.h"
#include "PreviewImage.h"
#include "buffer.h"
-#include "bufferparams.h"
#include "converter.h"
+#include "format.h"
#include "debug.h"
#include "lyxrc.h"
-#include "lyxtextclasslist.h"
-#include "LColor.h"
-
-#include "insets/inset.h"
#include "frontends/lyx_gui.h" // hexname
#include "support/forkedcontr.h"
#include "support/lstrings.h"
#include "support/lyxlib.h"
+#include "support/tostr.h"
#include <boost/bind.hpp>
-#include <boost/signals/trackable.hpp>
+#include "support/std_sstream.h"
#include <fstream>
#include <iomanip>
-#include <list>
-#include <map>
-#include <utility>
-#include <vector>
+
+namespace support = lyx::support;
+
using std::endl;
using std::find;
// Each item in the vector is a pair<snippet, image file name>.
typedef vector<StrPair> BitmapFile;
-
-double setFontScalingFactor(Buffer &);
-
string const unique_filename(string const bufferpath);
Converter const * setConverter();
FindFirst(string const & comp) : comp_(comp) {}
bool operator()(StrPair const & sp)
{
- return sp.first < comp_;
+ return sp.first == comp_;
}
private:
string const comp_;
///
pid_t pid;
///
+ string command;
+ ///
string metrics_file;
///
BitmapFile snippets;
};
-typedef map<string, InProgress> InProgressProcesses;
+typedef map<pid_t, InProgress> InProgressProcesses;
typedef InProgressProcesses::value_type InProgressProcess;
} // namespace anon
-namespace grfx {
+namespace lyx {
+namespace graphics {
struct PreviewLoader::Impl : public boost::signals::trackable {
///
/// Emit this signal when an image is ready for display.
boost::signal1<void, PreviewImage const &> imageReady;
+ Buffer const & buffer() const { return buffer_; }
+
private:
/// Called by the Forkedcall process that generated the bitmap files.
- void finishedGenerating(string const &, pid_t, int);
+ void finishedGenerating(pid_t, int);
///
void dumpPreamble(ostream &) const;
///
pimpl_->imageReady(pimage);
}
-} // namespace grfx
+
+Buffer const & PreviewLoader::buffer() const
+{
+ return pimpl_->buffer();
+}
+
+} // namespace graphics
+} // namespace lyx
// The details of the Impl
StrPair const operator()(string const & snippet)
{
ostringstream os;
- os << base_
- << setfill('0') << setw(3) << counter_++
- << "." << to_format_;
-
- string const file = os.str().c_str();
+ os << base_ << counter_++ << '.' << to_format_;
+ string const file = STRCONV(os.str());
return make_pair(snippet, file);
}
void InProgress::stop() const
{
if (pid)
- ForkedcallsController::get().kill(pid, 0);
+ support::ForkedcallsController::get().kill(pid, 0);
if (!metrics_file.empty())
- lyx::unlink(metrics_file);
+ support::unlink(metrics_file);
BitmapFile::const_iterator vit = snippets.begin();
BitmapFile::const_iterator vend = snippets.end();
for (; vit != vend; ++vit) {
if (!vit->second.empty())
- lyx::unlink(vit->second);
+ support::unlink(vit->second);
}
}
} // namespace anon
-namespace grfx {
+namespace lyx {
+namespace graphics {
PreviewLoader::Impl::Impl(PreviewLoader & p, Buffer const & b)
: parent_(p), buffer_(b), font_scaling_factor_(0.0)
{
- font_scaling_factor_ = setFontScalingFactor(const_cast<Buffer &>(b));
+ font_scaling_factor_ = 0.01 * lyxrc.dpi * lyxrc.zoom *
+ lyxrc.preview_scale_factor;
lyxerr[Debug::GRAPHICS] << "The font scaling factor is "
<< font_scaling_factor_ << endl;
if (!pconverter_ || status(latex_snippet) != NotFound)
return;
- pending_.push_back(latex_snippet);
+ string const snippet = support::trim(latex_snippet);
+ if (snippet.empty())
+ return;
+
+ lyxerr[Debug::GRAPHICS] << "adding snippet:\n" << snippet << endl;
+
+ pending_.push_back(snippet);
}
lyxerr[Debug::GRAPHICS] << "PreviewLoader::startLoading()" << endl;
// As used by the LaTeX file and by the resulting image files
- string const filename_base(unique_filename(buffer_.tmppath));
+ string directory = buffer_.tmppath;
+ if (directory.empty())
+ directory = buffer_.filePath();
+
+ string const filename_base(unique_filename(directory));
// Create an InProgress instance to place in the map of all
// such processes if it starts correctly.
// The conversion command.
ostringstream cs;
- cs << pconverter_->command << " " << latexfile << " "
- << int(font_scaling_factor_);
+ cs << pconverter_->command << ' ' << latexfile << ' '
+ << int(font_scaling_factor_) << ' ' << pconverter_->to;
- string const command = LibScriptSearch(cs.str().c_str());
+ string const command = "sh " + support::LibScriptSearch(STRCONV(cs.str()));
// Initiate the conversion from LaTeX to bitmap images files.
- Forkedcall::SignalTypePtr convert_ptr;
- convert_ptr.reset(new Forkedcall::SignalType);
-
+ support::Forkedcall::SignalTypePtr
+ convert_ptr(new support::Forkedcall::SignalType);
convert_ptr->connect(
- boost::bind(&Impl::finishedGenerating, this, _1, _2, _3));
+ boost::bind(&Impl::finishedGenerating, this, _1, _2));
- Forkedcall call;
+ support::Forkedcall call;
int ret = call.startscript(command, convert_ptr);
if (ret != 0) {
// Store the generation process in a list of all such processes
inprogress.pid = call.pid();
- in_progress_[command] = inprogress;
+ inprogress.command = command;
+ in_progress_[inprogress.pid] = inprogress;
}
-void PreviewLoader::Impl::finishedGenerating(string const & command,
- pid_t /* pid */, int retval)
+void PreviewLoader::Impl::finishedGenerating(pid_t pid, int retval)
{
+ // Paranoia check!
+ InProgressProcesses::iterator git = in_progress_.find(pid);
+ if (git == in_progress_.end()) {
+ lyxerr << "PreviewLoader::finishedGenerating(): unable to find "
+ "data for PID " << pid << endl;
+ return;
+ }
+
+ string const command = git->second.command;
string const status = retval > 0 ? "failed" : "succeeded";
lyxerr[Debug::GRAPHICS] << "PreviewLoader::finishedInProgress("
<< retval << "): processing " << status
if (retval > 0)
return;
- // Paranoia check!
- InProgressProcesses::iterator git = in_progress_.find(command);
- if (git == in_progress_.end()) {
- lyxerr << "PreviewLoader::finishedGenerating(): unable to find "
- "data for\n"
- << command << "!" << endl;
- return;
- }
-
// Read the metrics file, if it exists
vector<double> ascent_fractions(git->second.snippets.size());
setAscentFractions(ascent_fractions, git->second.metrics_file);
in_progress_.erase(git);
// Tell the outside world
- std::list<PreviewImagePtr>::const_iterator nit = newimages.begin();
- std::list<PreviewImagePtr>::const_iterator nend = newimages.end();
+ std::list<PreviewImagePtr>::const_reverse_iterator
+ nit = newimages.rbegin();
+ std::list<PreviewImagePtr>::const_reverse_iterator
+ nend = newimages.rend();
for (; nit != nend; ++nit) {
imageReady(*nit->get());
}
// Why on earth is Buffer::makeLaTeXFile a non-const method?
Buffer & tmp = const_cast<Buffer &>(buffer_);
// Dump the preamble only.
- tmp.makeLaTeXFile(os, string(), true, false, true);
+ LatexRunParams runparams;
+ runparams.flavor = LatexRunParams::LATEX;
+ runparams.nice = true;
+ runparams.moving_arg = true;
+ runparams.free_spacing = true;
+ tmp.makeLaTeXFile(os, buffer_.filePath(), runparams, true, false);
+
+ // FIXME! This is a HACK! The proper fix is to control the 'true'
+ // passed to WriteStream below:
+ // int InsetFormula::latex(Buffer const &, ostream & os,
+ // LatexRunParams const & runparams) const
+ // {
+ // WriteStream wi(os, runparams.moving_arg, true);
+ // par_->write(wi);
+ // return wi.line();
+ // }
+ os << "\n"
+ << "\\def\\lyxlock{}\n"
+ << "\n";
// Loop over the insets in the buffer and dump all the math-macros.
Buffer::inset_iterator it = buffer_.inset_const_iterator_begin();
Buffer::inset_iterator end = buffer_.inset_const_iterator_end();
- for (; it != end; ++it) {
- if ((*it)->lyxCode() == Inset::MATHMACRO_CODE) {
- (*it)->latex(&buffer_, os, true, true);
- }
- }
+ for (; it != end; ++it)
+ if (it->lyxCode() == InsetOld::MATHMACRO_CODE)
+ it->latex(buffer_, os, runparams);
// All equation lables appear as "(#)" + preview.sty's rendering of
// the label name
// Use the preview style file to ensure that each snippet appears on a
// fresh page.
os << "\n"
- << "\\usepackage[active,delayed,dvips,tightpage,showlabels]{preview}\n"
+ << "\\usepackage[active,delayed,dvips,tightpage,showlabels,lyx]{preview}\n"
<< "\n";
// This piece of PostScript magic ensures that the foreground and
os << "\\AtBeginDocument{\\AtBeginDvi{%\n"
<< "\\special{!userdict begin/bop-hook{//bop-hook exec\n"
- << "<" << fg << bg << ">{255 div}forall setrgbcolor\n"
+ << '<' << fg << bg << ">{255 div}forall setrgbcolor\n"
<< "clippath fill setrgbcolor}bind def end}}}\n";
}
}
}
-} // namespace grfx
-
+} // namespace graphics
+} // namespace lyx
namespace {
{
static int theCounter = 0;
string const filename = tostr(theCounter++) + "lyxpreview";
- return AddName(bufferpath, filename);
+ return support::AddName(bufferpath, filename);
}
}
-double setFontScalingFactor(Buffer & buffer)
+void setAscentFractions(vector<double> & ascent_fractions,
+ string const & metrics_file)
{
- double scale_factor = 0.01 * lyxrc.dpi * lyxrc.zoom *
- lyxrc.preview_scale_factor;
+ // If all else fails, then the images will have equal ascents and
+ // descents.
+ vector<double>::iterator it = ascent_fractions.begin();
+ vector<double>::iterator end = ascent_fractions.end();
+ fill(it, end, 0.5);
- // Has the font size been set explicitly?
- string const & fontsize = buffer.params.fontsize;
- lyxerr[Debug::GRAPHICS] << "PreviewLoader::scaleToFitLyXView()\n"
- << "font size is " << fontsize << endl;
+ ifstream in(metrics_file.c_str());
+ if (!in.good()) {
+ lyxerr[Debug::GRAPHICS]
+ << "setAscentFractions(" << metrics_file << ")\n"
+ << "Unable to open file!" << endl;
+ return;
+ }
- if (isStrUnsignedInt(fontsize))
- return 10.0 * scale_factor / strToDbl(fontsize);
+ bool error = false;
- // No. We must extract it from the LaTeX class file.
- LyXTextClass const & tclass = textclasslist[buffer.params.textclass];
- string const textclass(tclass.latexname() + ".cls");
- string const classfile(findtexfile(textclass, "cls"));
+ // Tightpage dimensions affect all subsequent dimensions
+ int tp_ascent;
+ int tp_descent;
- lyxerr[Debug::GRAPHICS] << "text class is " << textclass << '\n'
- << "class file is " << classfile << endl;
+ 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;
- ifstream ifs(classfile.c_str());
- if (!ifs.good()) {
- lyxerr[Debug::GRAPHICS] << "Unable to open class file!" << endl;
- return scale_factor;
- }
+ if (!in.good())
+ // eof after all
+ break;
- string str;
- double scaling = scale_factor;
+ error = preview != "Preview:"
+ || (type != "Tightpage" && type != "Snippet");
+ if (error)
+ break;
- while (ifs.good()) {
- getline(ifs, str);
- // To get the default font size, look for a line like
- // "\ExecuteOptions{letterpaper,10pt,oneside,onecolumn,final}"
- if (!prefixIs(frontStrip(str), "\\ExecuteOptions"))
- continue;
+ if (type == "Tightpage") {
+ int dummy;
+ in >> dummy >> tp_descent >> dummy >> tp_ascent;
- // str contains just the options of \ExecuteOptions
- string const tmp = split(str, '{');
- split(tmp, str, '}');
-
- int count = 0;
- string tok = token(str, ',', count++);
- while (!isValidLength(tok) && !tok.empty())
- tok = token(str, ',', count++);
-
- if (!tok.empty()) {
- lyxerr[Debug::GRAPHICS]
- << "Extracted default font size from "
- "LaTeX class file successfully!" << endl;
- LyXLength fsize(tok);
- scaling *= 10.0 / fsize.value();
- break;
- }
- }
+ error = !in.good();
+ if (error)
+ break;
- return scaling;
-}
+ } 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;
-void setAscentFractions(vector<double> & ascent_fractions,
- string const & metrics_file)
-{
- // If all else fails, then the images will have equal ascents and
- // descents.
- vector<double>::iterator it = ascent_fractions.begin();
- vector<double>::iterator end = ascent_fractions.end();
- fill(it, end, 0.5);
+ double const a = ascent + tp_ascent;
+ double const d = descent - tp_descent;
- ifstream ifs(metrics_file.c_str());
- if (!ifs.good()) {
- lyxerr[Debug::GRAPHICS] << "setAscentFractions("
- << metrics_file << ")\n"
- << "Unable to open file!"
- << endl;
- return;
- }
+ if (!support::float_equal(a + d, 0, 0.1))
+ *it = a / (a + d);
- for (; it != end; ++it) {
- string page;
- string page_id;
- int dummy;
- double ascent;
- double descent;
-
- ifs >> page >> page_id >> dummy >> dummy >> dummy >> dummy
- >> ascent >> descent >> dummy;
-
- if (!ifs.good() ||
- page != "%%Page" ||
- !isStrUnsignedInt(strip(page_id, ':'))) {
- lyxerr[Debug::GRAPHICS] << "setAscentFractions("
- << metrics_file << ")\n"
- << "Error reading file!"
- << endl;
- break;
+ if (++it == end)
+ break;
}
+ }
- if (ascent + descent != 0)
- *it = ascent / (ascent + descent);
+ if (error) {
+ lyxerr[Debug::GRAPHICS]
+ << "setAscentFractions(" << metrics_file << ")\n"
+ << "Error reading file!\n" << endl;
}
}
projects / features.git / blobdiff