#include "BufferView.h"
#include "gettext.h"
#include "debug.h"
-#include "frontends/Alert.h"
#include "support/LOstream.h"
#include "support/LAssert.h"
+#include "support/lyxlib.h"
#include "support/systemcall.h"
-#include "support/filetools.h" // LibFileSearch
+#include "support/filetools.h"
+#include "frontends/Alert.h"
#include "frontends/LyXView.h"
#include "frontends/Painter.h"
+#include "graphics/GraphicsImage.h"
#include "lyxrc.h"
#include "math_hullinset.h"
#include "math_support.h"
#include "math_mathmlstream.h"
#include "textpainter.h"
-#include "preview.h"
+
+#include <fstream>
+#include <boost/bind.hpp>
+#include <boost/utility.hpp>
using std::ostream;
using std::ifstream;
using std::getline;
-namespace {
-
- string captureOutput(string const & cmd, string const & data)
- {
- string outfile = lyx::tempName(string(), "mathextern");
- string full = "echo '" + data + "' | (" + cmd + ") > " + outfile;
- lyxerr << "calling: " << full << "\n";
- Systemcall dummy;
- dummy.startscript(Systemcall::Wait, full);
- string out = GetFileContents(outfile);
- lyx::unlink(outfile);
- lyxerr << "result: '" << out << "'\n";
- return out;
- }
-
-
- MathArray pipeThroughMaple(string const & extra, MathArray const & ar)
- {
- string header = "readlib(latex):\n";
-
- // remove the \\it for variable names
- //"#`latex/csname_font` := `\\it `:"
- header +=
- "`latex/csname_font` := ``:\n";
-
- // export matrices in (...) instead of [...]
- header +=
- "`latex/latex/matrix` := "
- "subs(`[`=`(`, `]`=`)`,"
- "eval(`latex/latex/matrix`)):\n";
-
- // replace \\cdots with proper '*'
- header +=
- "`latex/latex/*` := "
- "subs(`\\,`=`\\cdot `,"
- "eval(`latex/latex/*`)):\n";
-
- // remove spurious \\noalign{\\medskip} in matrix output
- header +=
- "`latex/latex/matrix`:= "
- "subs(`\\\\\\\\\\\\noalign{\\\\medskip}` = `\\\\\\\\`,"
- "eval(`latex/latex/matrix`)):\n";
-
- //"#`latex/latex/symbol` "
- // " := subs((\\'_\\' = \\'`\\_`\\',eval(`latex/latex/symbol`)): ";
-
- string trailer = "quit;";
- ostringstream os;
- MapleStream ms(os);
- ms << ar;
- string expr = os.str().c_str();
- lyxerr << "ar: '" << ar << "'\n";
-
- for (int i = 0; i < 100; ++i) { // at most 100 attempts
- // try to fix missing '*' the hard way by using mint
- //
- // ... > echo "1A;" | mint -i 1 -S -s -q
- // on line 1: 1A;
- // ^ syntax error -
- // Probably missing an operator such as * p
- //
- lyxerr << "checking expr: '" << expr << "'\n";
- string out = captureOutput("mint -i 1 -S -s -q -q", expr + ";");
- if (out.empty())
- break; // expression syntax is ok
- istringstream is(out.c_str());
- string line;
- getline(is, line);
- if (line.find("on line") != 0)
- break; // error message not identified
- getline(is, line);
- string::size_type pos = line.find('^');
- if (pos == string::npos || pos < 15)
- break; // caret position not found
- pos -= 15; // skip the "on line ..." part
- if (expr[pos] == '*' || (pos > 0 && expr[pos - 1] == '*'))
- break; // two '*' in a row are definitely bad
- expr.insert(pos, "*");
- }
-
- string full = "latex(" + extra + '(' + expr + "));";
- string out = captureOutput("maple -q", header + full + trailer);
-
- // change \_ into _
-
- //
- MathArray res;
- mathed_parse_cell(res, out);
- return res;
- }
-
-
- MathArray pipeThroughOctave(string const &, MathArray const & ar)
- {
- ostringstream os;
- OctaveStream vs(os);
- vs << ar;
- string expr = os.str().c_str();
- string out;
-
- for (int i = 0; i < 100; ++i) { // at most 100 attempts
- //
- // try to fix missing '*' the hard way
- // parse error:
- // >>> ([[1 2 3 ];[2 3 1 ];[3 1 2 ]])([[1 2 3 ];[2 3 1 ];[3 1 2 ]])
- // ^
- //
- lyxerr << "checking expr: '" << expr << "'\n";
- out = captureOutput("octave -q 2>&1", expr);
- lyxerr << "checking out: '" << out << "'\n";
-
- // leave loop if expression syntax is probably ok
- if (out.find("parse error:") == string::npos)
- break;
-
- // search line with single caret
- istringstream is(out.c_str());
- string line;
- while (is) {
- getline(is, line);
- lyxerr << "skipping line: '" << line << "'\n";
- if (line.find(">>> ") != string::npos)
- break;
- }
-
- // found line with error, next line is the one with caret
- getline(is, line);
- string::size_type pos = line.find('^');
- lyxerr << "caret line: '" << line << "'\n";
- lyxerr << "found caret at pos: '" << pos << "'\n";
- if (pos == string::npos || pos < 4)
- break; // caret position not found
- pos -= 4; // skip the ">>> " part
- if (expr[pos] == '*')
- break; // two '*' in a row are definitely bad
- expr.insert(pos, "*");
- }
-
- if (out.size() < 6)
- return MathArray();
-
- // remove 'ans = '
- out = out.substr(6);
-
- // parse output as matrix or single number
- MathAtom at(new MathArrayInset("array", out));
- MathArrayInset const * mat = at.nucleus()->asArrayInset();
- MathArray res;
- if (mat->ncols() == 1 && mat->nrows() == 1)
- res.push_back(mat->cell(0));
- else {
- res.push_back(MathAtom(new MathDelimInset("(", ")")));
- res.back()->cell(0).push_back(at);
- }
- return res;
- }
-
-
- MathArray pipeThroughExtern(string const & lang, string const & extra,
- MathArray const & ar)
- {
- if (lang == "octave")
- return pipeThroughOctave(extra, ar);
-
- if (lang == "maple")
- return pipeThroughMaple(extra, ar);
-
- // create normalized expression
- ostringstream os;
- NormalStream ns(os);
- os << "[" << extra << ' ';
- ns << ar;
- os << "]";
- string data = os.str().c_str();
-
- // search external script
- string file = LibFileSearch("mathed", "extern_" + lang);
- if (file.empty()) {
- lyxerr << "converter to '" << lang << "' not found\n";
- return MathArray();
- }
-
- // run external sript
- string out = captureOutput(file, data);
- MathArray res;
- mathed_parse_cell(res, out);
- return res;
- }
-
-}
-
InsetFormula::InsetFormula()
- : par_(MathAtom(new MathHullInset))
+ : par_(MathAtom(new MathHullInset)), loader_(0)
{}
-InsetFormula::InsetFormula(MathInsetTypes t)
- : par_(MathAtom(new MathHullInset(t)))
-{}
-
-
-InsetFormula::InsetFormula(string const & s)
+InsetFormula::InsetFormula(BufferView * bv)
+ : par_(MathAtom(new MathHullInset)), loader_(0)
{
- if (s.size()) {
- bool res = mathed_parse_normal(par_, s);
+ view_ = bv;
+}
- if (!res)
- res = mathed_parse_normal(par_, "$" + s + "$");
- if (!res) {
- lyxerr << "cannot interpret '" << s << "' as math\n";
- par_ = MathAtom(new MathHullInset(LM_OT_SIMPLE));
- }
- }
- metrics();
+InsetFormula::InsetFormula(string const & data)
+ : par_(MathAtom(new MathHullInset)), loader_(0)
+{
+ if (!data.size())
+ return;
+ if (!mathed_parse_normal(par_, data))
+ lyxerr << "cannot interpret '" << data << "' as math\n";
}
+
Inset * InsetFormula::clone(Buffer const &, bool) const
{
return new InsetFormula(*this);
}
+
int InsetFormula::ascii(Buffer const *, ostream & os, int) const
{
#if 0
int InsetFormula::linuxdoc(Buffer const * buf, ostream & os) const
{
- return docbook(buf, os);
+ return docbook(buf, os, false);
}
-int InsetFormula::docbook(Buffer const * buf, ostream & os) const
+int InsetFormula::docbook(Buffer const * buf, ostream & os, bool) const
{
MathMLStream ms(os);
- ms << MTag("equation") << MTag("alt");
+ ms << MTag("equation");
+ ms << MTag("alt");
+ ms << "<[CDATA[";
int res = ascii(buf, ms.os(), 0);
- ms << ETag("alt") << MTag("math");
- ms << par_.nucleus();
- ms << ETag("math") << ETag("equation");
+ ms << "]]>";
+ ms << ETag("alt");
+ ms << MTag("math");
+ ms << par_.nucleus();
+ ms << ETag("math");
+ ms << ETag("equation");
return ms.line() + res;
}
{
mathed_parse_normal(par_, lex);
metrics();
+ updatePreview();
}
void InsetFormula::draw(BufferView * bv, LyXFont const & font,
int y, float & xx, bool) const
{
- metrics(bv, font);
-
- int x = int(xx);
- int w = par_->width();
- int h = par_->height();
- int a = par_->ascent();
+ int const x = int(xx);
+ int const w = width(bv, font);
+ int const d = descent(bv, font);
+ int const a = ascent(bv, font);
+ int const h = a + d;
MathPainterInfo pi(bv->painter());
- pi.base.font = font;
- pi.base.font.setColor(LColor::math);
- pi.base.style = display() ? LM_ST_DISPLAY : LM_ST_TEXT;
-
- if (lcolor.getX11Name(LColor::mathbg)!=lcolor.getX11Name(LColor::background))
- pi.pain.fillRectangle(x, y - a, w, h, LColor::mathbg);
-
- if (mathcursor &&
- const_cast<InsetFormulaBase const *>(mathcursor->formula()) == this)
- {
- mathcursor->drawSelection(pi);
- pi.pain.rectangle(x, y - a, w, h, LColor::mathframe);
- }
- par_->draw(pi, x, y);
+ if (canPreview()) {
+ pi.pain.image(x + 1, y - a + 1, w - 2, h - 2, *(loader_->image()));
+ } else {
+ //pi.base.style = display() ? LM_ST_DISPLAY : LM_ST_TEXT;
+ pi.base.style = LM_ST_TEXT;
+ pi.base.font = font;
+ pi.base.font.setColor(LColor::math);
+ if (lcolor.getX11Name(LColor::mathbg)
+ != lcolor.getX11Name(LColor::background))
+ pi.pain.fillRectangle(x, y - a, w, h, LColor::mathbg);
+
+ if (mathcursor &&
+ const_cast<InsetFormulaBase const *>(mathcursor->formula()) == this)
+ {
+ mathcursor->drawSelection(pi);
+ pi.pain.rectangle(x, y - a, w, h, LColor::mathframe);
+ }
+
+ par_->draw(pi, x, y);
+ }
- // preview stuff
-#if 0
- ostringstream os;
- WriteStream wi(os, false, false);
- par_->write(wi);
- if (grfx::ImagePtr image = preview(os.str()))
- pain.image(x, y, w, h, *image);
-#endif
-
- xx += par_->width();
+ xx += w;
xo_ = x;
yo_ = y;
hull()->numbered(row, true);
}
+#warning FIXME: please check you really mean repaint() ... is it needed,
+#warning and if so, should it be update() instead ?
if (!new_label.empty() && bv->ChangeRefsIfUnique(old_label, new_label))
- bv->redraw();
+ bv->repaint();
hull()->label(row, new_label);
int x;
int y;
mathcursor->getPos(x, y);
- hull()->mutate(arg);
+ mutate(arg);
mathcursor->setPos(x, y);
mathcursor->normalize();
updateLocal(bv, true);
case LFUN_MATH_EXTERN:
{
bv->lockedInsetStoreUndo(Undo::EDIT);
- handleExtern(arg);
+ if (mathcursor)
+ mathcursor->handleExtern(arg);
// re-compute inset dimension
metrics(bv);
updateLocal(bv, true);
int x = 0;
int y = 0;
mathcursor->getPos(x, y);
- if (hull()->getType() == LM_OT_SIMPLE)
- hull()->mutate(LM_OT_EQUATION);
+ if (hullType() == "simple")
+ mutate("equation");
else
- hull()->mutate(LM_OT_SIMPLE);
+ mutate("simple");
mathcursor->setPos(x, y);
mathcursor->normalize();
updateLocal(bv, true);
result = InsetFormulaBase::localDispatch(bv, action, arg);
}
- return result;
-}
-
+ //updatePreview();
-void InsetFormula::handleExtern(const string & arg)
-{
- // where are we?
- if (!mathcursor)
- return;
-
- string lang;
- string extra;
- istringstream iss(arg.c_str());
- iss >> lang >> extra;
- if (extra.empty())
- extra = "noextra";
-
- bool selected = mathcursor->selection();
-
- MathArray ar;
- if (selected) {
- mathcursor->selGet(ar);
- //lyxerr << "use selection: " << ar << "\n";
- } else {
- mathcursor->last();
- mathcursor->stripFromLastEqualSign();
- ar = mathcursor->cursor().cell();
- mathcursor->insert('=');
- //lyxerr << "use whole cell: " << ar << "\n";
- }
-
- mathcursor->insert(pipeThroughExtern(lang, extra, ar));
+ return result;
}
bool InsetFormula::display() const
{
- return hull()->getType() != LM_OT_SIMPLE;
+ return hullType() != "simple" && hullType() != "none";
}
{
return
(code == Inset::LABEL_CODE && display())
+ || code == Inset::REF_CODE
|| code == Inset::ERT_CODE;
}
int InsetFormula::ascent(BufferView *, LyXFont const &) const
{
- return par_->ascent() + 1;
+ const int a = par_->ascent();
+ if (!canPreview())
+ return a + 1;
+ return a + 1 - (par_->height() - loader_->image()->getHeight()) / 2;
}
int InsetFormula::descent(BufferView *, LyXFont const &) const
{
- return par_->descent() + 1;
+ const int d = par_->descent();
+ if (!canPreview())
+ return d + 1;
+ return d + 1 - (par_->height() - loader_->image()->getHeight()) / 2;
}
int InsetFormula::width(BufferView * bv, LyXFont const & font) const
{
metrics(bv, font);
- return par_->width();
+ return canPreview() ? loader_->image()->getWidth() : par_->width();
}
-MathInsetTypes InsetFormula::getType() const
+string InsetFormula::hullType() const
{
- return hull()->getType();
+ return hull() ? hull()->getType() : "none";
}
+
+
+void InsetFormula::mutate(string const & type )
+{
+ if (hull())
+ hull()->mutate(type);
+}
+
+
+//
+// preview stuff
+//
+
+bool InsetFormula::canPreview() const
+{
+ return lyxrc.preview && loader_ && !par_->asNestInset()->editing()
+ && loader_->status() == grfx::Ready;
+}
+
+
+void InsetFormula::statusChanged()
+{
+ lyxerr << "### InsetFormula::statusChanged called!, status: "
+ << loader_->status() << "\n";
+ if (loader_->status() == grfx::Ready)
+ view()->updateInset(this, false);
+ else if (loader_->status() == grfx::WaitingToLoad)
+ loader_->startLoading();
+}
+
+
+void InsetFormula::updatePreview()
+{
+ // nothing to be done if no preview requested
+ lyxerr << "### updatePreview() called\n";
+ if (!lyxrc.preview)
+ return;
+
+ // get LaTeX
+ ostringstream ls;
+ WriteStream wi(ls, false, false);
+ par_->write(wi);
+ string const data = ls.str();
+
+ // the preview cache, maps contents to image loaders
+ typedef std::map<string, boost::shared_ptr<grfx::Loader> > cache_type;
+ static cache_type theCache;
+ static int theCounter = 0;
+
+ // set our loader corresponding to our current data
+ cache_type::const_iterator it = theCache.find(data);
+
+ // is this old data?
+ if (it != theCache.end()) {
+ // we have already a loader, connect to it anyway
+ //lyxerr << "### updatePreview(), old loader: " << loader_ << "\n";
+ loader_ = it->second.get();
+ loader_->statusChanged.connect
+ (boost::bind(&InsetFormula::statusChanged, this));
+ return;
+ }
+
+ // construct new file name
+ static string const dir = OnlyPath(lyx::tempName());
+ ostringstream os;
+ os << dir << theCounter++ << ".lyxpreview";
+ string file = os.str();
+
+ // the real work starts
+ //lyxerr << "### updatePreview(), new file " << file << "\n";
+ std::ofstream of(file.c_str());
+ of << "\\batchmode"
+ << "\\documentclass{article}"
+ << "\\usepackage{amssymb}"
+ << "\\thispagestyle{empty}"
+ << "\\pdfoutput=0"
+ << "\\begin{document}"
+ << data
+ << "\\end{document}\n";
+ of.close();
+
+ // now we are done, start actual loading we will get called back via
+ // InsetFormula::statusChanged() if this is finished
+ theCache[data].reset(new grfx::Loader(file));
+ //lyxerr << "### updatePreview(), new loader: " << loader_ << "\n";
+ loader_ = theCache.find(data)->second.get();
+ loader_->startLoading();
+ loader_->statusChanged.connect(boost::bind(&InsetFormula::statusChanged, this));
+}
+
projects / lyx.git / blobdiff