* Licence details can be found in the file COPYING.
*
* \author André Pönitz
+ * \author Stefan Schimanski
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "MathData.h"
+
+#include "InsetMathBrace.h"
#include "InsetMathFont.h"
#include "InsetMathScript.h"
-#include "MathMacro.h"
#include "MacroTable.h"
+#include "MathMacro.h"
#include "MathStream.h"
#include "MathSupport.h"
+#include "MetricsInfo.h"
#include "ReplaceData.h"
-#include "BufferView.h"
#include "Buffer.h"
+#include "BufferView.h"
+#include "CoordCache.h"
#include "Cursor.h"
-#include "debug.h"
-#include "Color.h"
+#include "support/debug.h"
+
+#include "support/docstream.h"
#include "frontends/FontMetrics.h"
#include "frontends/Painter.h"
#include <boost/assert.hpp>
+#include <boost/next_prior.hpp>
+using namespace std;
namespace lyx {
-using std::abs;
-using std::endl;
-using std::min;
-using std::ostringstream;
-using std::string;
-using std::vector;
-
MathData::MathData(const_iterator from, const_iterator to)
: base_type(from, to)
}
}
-#ifdef WITH_WARNINGS
-#warning temporarily disabled
+ // FIXME: temporarily disabled
// for (const_iterator it = begin(); it != end(); ++it)
// it->nucleus()->replace(rep);
-#endif
}
}
-bool MathData::metrics(MetricsInfo & mi, Dimension & dim) const
-{
- dim = dim_;
- metrics(mi);
- if (dim_ == dim)
- return false;
- dim = dim_;
- return true;
-}
-
-
namespace {
bool isInside(DocIterator const & it, MathData const & ar,
-void MathData::metrics(MetricsInfo & mi) const
+void MathData::metrics(MetricsInfo & mi, Dimension & dim) const
{
frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
- dim_ = fm.dimension('I');
+ dim = fm.dimension('I');
int xascent = fm.dimension('x').ascent();
- if (xascent >= dim_.asc)
- xascent = (2 * dim_.asc) / 3;
+ if (xascent >= dim.asc)
+ xascent = (2 * dim.asc) / 3;
minasc_ = xascent;
mindes_ = (3 * xascent) / 4;
slevel_ = (4 * xascent) / 5;
sshift_ = xascent / 4;
kerning_ = 0;
- if (empty())
+ if (empty()) {
+ // Cache the dimension.
+ mi.base.bv->coordCache().arrays().add(this, dim);
return;
+ }
- dim_.asc = 0;
- dim_.wid = 0;
+ Cursor & cur = mi.base.bv->cursor();
+ const_cast<MathData*>(this)->updateMacros(&cur, mi.macrocontext);
+
+ dim.asc = 0;
+ dim.wid = 0;
Dimension d;
- //BufferView & bv = *mi.base.bv;
- //Buffer const & buf = *bv.buffer();
+ atom_dims_.clear();
for (size_t i = 0, n = size(); i != n; ++i) {
MathAtom const & at = operator[](i);
-#if 0
- MathMacro const * mac = at->asMacro();
- if (mac && buf.hasMacro(mac->name())) {
- MacroData const & tmpl = buf.getMacro(mac->name());
- int numargs = tmpl.numargs();
- if (i + numargs > n)
- numargs = n - i - 1;
- lyxerr << "metrics:found macro: " << mac->name()
- << " numargs: " << numargs << endl;
- if (!isInside(bv.cursor(), *this, i + 1, i + numargs + 1)) {
- MathData args(begin() + i + 1, begin() + i + numargs + 1);
- MathData exp;
- tmpl.expand(args, exp);
- mac->setExpansion(exp, args);
- mac->metricsExpanded(mi, d);
- dim_.wid += mac->widthExpanded();
- i += numargs;
- continue;
- }
- }
-#endif
at->metrics(mi, d);
- dim_ += d;
+ atom_dims_.push_back(d);
+ dim += d;
if (i == n - 1)
kerning_ = at->kerning();
}
+ // Cache the dimension.
+ mi.base.bv->coordCache().arrays().add(this, dim);
}
BufferView & bv = *pi.base.bv;
setXY(bv, x, y);
+ Dimension const & dim = bv.coordCache().getArrays().dim(this);
+
if (empty()) {
- pi.pain.rectangle(x, y - ascent(), width(), height(), Color::mathline);
+ pi.pain.rectangle(x, y - dim.ascent(), dim.width(), dim.height(), Color_mathline);
return;
}
// don't draw outside the workarea
- if (y + descent() <= 0
- || y - ascent() >= bv.workHeight()
- || x + width() <= 0
+ if (y + dim.descent() <= 0
+ || y - dim.ascent() >= bv.workHeight()
+ || x + dim.width() <= 0
|| x >= bv. workWidth())
return;
-
-
for (size_t i = 0, n = size(); i != n; ++i) {
MathAtom const & at = operator[](i);
-#if 0
- Buffer const & buf = bv.buffer();
- // special macro handling
- MathMacro const * mac = at->asMacro();
- if (mac && buf.hasMacro(mac->name())) {
- MacroData const & tmpl = buf.getMacro(mac->name());
- int numargs = tmpl.numargs();
- if (i + numargs > n)
- numargs = n - i - 1;
- if (!isInside(bv.cursor(), *this, i + 1, i + numargs + 1)) {
- mac->drawExpanded(pi, x, y);
- x += mac->widthExpanded();
- i += numargs;
- continue;
- }
- }
-#endif
bv.coordCache().insets().add(at.nucleus(), x, y);
at->drawSelection(pi, x, y);
- at->setRedrawBackground(false);
- lyxerr << "selection draw " << x << " " << y << " " << at->redrawBackground() << std::endl;
at->draw(pi, x, y);
- //at->setRedrawBackground(true);
- x += at->width();
+ x += atom_dims_[i].wid;
}
}
}
+void MathData::updateMacros(Cursor * cur, MacroContext const & mc)
+{
+ // go over the array and look for macros
+ for (size_t i = 0; i < size(); ++i) {
+ MathMacro * macroInset = operator[](i).nucleus()->asMacro();
+ if (!macroInset)
+ continue;
+
+ // get macro
+ macroInset->updateMacro(mc);
+ size_t macroNumArgs = 0;
+ size_t macroOptionals = 0;
+ MacroData const * macro = macroInset->macro();
+ if (macro) {
+ macroNumArgs = macro->numargs();
+ macroOptionals = macro->optionals();
+ }
+
+ // store old and compute new display mode
+ MathMacro::DisplayMode newDisplayMode;
+ MathMacro::DisplayMode oldDisplayMode = macroInset->displayMode();
+ newDisplayMode = macroInset->computeDisplayMode();
+
+ // arity changed or other reason to detach?
+ if (oldDisplayMode == MathMacro::DISPLAY_NORMAL
+ && (macroInset->arity() != macroNumArgs
+ || macroInset->optionals() != macroOptionals
+ || newDisplayMode == MathMacro::DISPLAY_UNFOLDED)) {
+
+ detachMacroParameters(cur, i);
+ }
+
+ // the macro could have been copied while resizing this
+ macroInset = operator[](i).nucleus()->asMacro();
+
+ // Cursor in \label?
+ if (newDisplayMode != MathMacro::DISPLAY_UNFOLDED
+ && oldDisplayMode == MathMacro::DISPLAY_UNFOLDED) {
+ // put cursor in front of macro
+ if (cur) {
+ int macroSlice = cur->find(macroInset);
+ if (macroSlice != -1)
+ cur->cutOff(macroSlice - 1);
+ }
+ }
+
+ // update the display mode
+ macroInset->setDisplayMode(newDisplayMode);
+
+ // arity changed?
+ if (newDisplayMode == MathMacro::DISPLAY_NORMAL
+ && (macroInset->arity() != macroNumArgs
+ || macroInset->optionals() != macroOptionals)) {
+ // is it a virgin macro which was never attached to parameters?
+ bool fromInitToNormalMode
+ = (oldDisplayMode == MathMacro::DISPLAY_INIT
+ || oldDisplayMode == MathMacro::DISPLAY_INTERACTIVE_INIT)
+ && newDisplayMode == MathMacro::DISPLAY_NORMAL;
+
+ // if the macro was entered interactively (i.e. not by paste or during
+ // loading), it should not be greedy, but the cursor should
+ // automatically jump into the macro when behind
+ bool interactive = (oldDisplayMode == MathMacro::DISPLAY_INTERACTIVE_INIT);
+
+ // attach parameters
+ attachMacroParameters(cur, i, macroNumArgs, macroOptionals,
+ fromInitToNormalMode, interactive);
+
+ if (cur) {
+ // FIXME: proper anchor handling, this removes the selection
+ cur->updateInsets(&cur->bottom().inset());
+ cur->clearSelection();
+ }
+ }
+
+ // Give macro the chance to adapt to new situation.
+ // The macroInset could be invalid now because it was put into a script
+ // inset and therefore "deep" copied. So get it again from the MathData.
+ InsetMath * inset = operator[](i).nucleus();
+ if (inset->asScriptInset())
+ inset = inset->asScriptInset()->nuc()[0].nucleus();
+ BOOST_ASSERT(inset->asMacro());
+ inset->asMacro()->updateRepresentation(cur);
+ }
+}
+
+
+void MathData::detachMacroParameters(Cursor * cur, const size_type macroPos)
+{
+ MathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
+
+ // detach all arguments
+ vector<MathData> detachedArgs;
+ if (macroPos + 1 == size())
+ // strip arguments if we are at the MathData end
+ macroInset->detachArguments(detachedArgs, true);
+ else
+ macroInset->detachArguments(detachedArgs, false);
+
+ // find cursor slice
+ int curMacroSlice = -1;
+ if (cur)
+ curMacroSlice = cur->find(macroInset);
+ idx_type curMacroIdx = -1;
+ pos_type curMacroPos = -1;
+ vector<CursorSlice> argSlices;
+ if (curMacroSlice != -1) {
+ curMacroPos = (*cur)[curMacroSlice].pos();
+ curMacroIdx = (*cur)[curMacroSlice].idx();
+ cur->cutOff(curMacroSlice, argSlices);
+ cur->pop_back();
+ }
+
+ // only [] after the last non-empty argument can be dropped later
+ size_t lastNonEmptyOptional = 0;
+ for (size_t l = 0; l < detachedArgs.size() && l < macroInset->optionals(); ++l) {
+ if (!detachedArgs[l].empty())
+ lastNonEmptyOptional = l;
+ }
+
+ // optional arguments to be put back?
+ pos_type p = macroPos + 1;
+ size_t j = 0;
+ for (; j < detachedArgs.size() && j < macroInset->optionals(); ++j) {
+ // another non-empty parameter follows?
+ bool canDropEmptyOptional = j >= lastNonEmptyOptional;
+
+ // then we can drop empty optional parameters
+ if (detachedArgs[j].empty() && canDropEmptyOptional) {
+ if (curMacroIdx == j)
+ (*cur)[curMacroSlice - 1].pos() = macroPos + 1;
+ continue;
+ }
+
+ // Otherwise we don't drop an empty optional, put it back normally
+ MathData optarg;
+ asArray(from_ascii("[]"), optarg);
+ MathData & arg = detachedArgs[j];
+
+ // look for "]", i.e. put a brace around?
+ InsetMathBrace * brace = 0;
+ for (size_t q = 0; q < arg.size(); ++q) {
+ if (arg[q]->getChar() == ']') {
+ // put brace
+ brace = new InsetMathBrace();
+ break;
+ }
+ }
+
+ // put arg between []
+ if (brace) {
+ brace->cell(0) = arg;
+ optarg.insert(1, MathAtom(brace));
+ } else
+ optarg.insert(1, arg);
+
+ // insert it into the array
+ insert(p, optarg);
+ p += optarg.size();
+
+ // cursor in macro?
+ if (curMacroSlice == -1)
+ continue;
+
+ // cursor in optional argument of macro?
+ if (curMacroIdx == j) {
+ if (brace) {
+ cur->append(0, curMacroPos);
+ (*cur)[curMacroSlice - 1].pos() = macroPos + 2;
+ } else
+ (*cur)[curMacroSlice - 1].pos() = macroPos + 2 + curMacroPos;
+ cur->append(argSlices);
+ } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
+ // cursor right of macro
+ (*cur)[curMacroSlice - 1].pos() += optarg.size();
+ }
+
+ // put them back into the MathData
+ for (; j < detachedArgs.size(); ++j, ++p) {
+ MathData const & arg = detachedArgs[j];
+ if (arg.size() == 1
+ && !arg[0]->asScriptInset()
+ && !(arg[0]->asMacro() && arg[0]->asMacro()->arity() > 0))
+ insert(p, arg[0]);
+ else
+ insert(p, MathAtom(new InsetMathBrace(arg)));
+
+ // cursor in macro?
+ if (curMacroSlice == -1)
+ continue;
+
+ // cursor in j-th argument of macro?
+ if (curMacroIdx == j) {
+ if (operator[](p).nucleus()->asBraceInset()) {
+ (*cur)[curMacroSlice - 1].pos() = p;
+ cur->append(0, curMacroPos);
+ cur->append(argSlices);
+ } else {
+ (*cur)[curMacroSlice - 1].pos() = p; // + macroPos;
+ cur->append(argSlices);
+ }
+ } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
+ ++(*cur)[curMacroSlice - 1].pos();
+ }
+
+ if (cur) {
+ // FIXME: proper anchor handling, this removes the selection
+ cur->clearSelection();
+ cur->updateInsets(&cur->bottom().inset());
+ }
+}
+
+
+void MathData::attachMacroParameters(Cursor * cur,
+ const size_type macroPos, const size_type macroNumArgs,
+ const int macroOptionals, const bool fromInitToNormalMode,
+ const bool interactiveInit)
+{
+ MathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
+
+ // start at atom behind the macro again, maybe with some new arguments
+ // from the detach phase above, to add them back into the macro inset
+ size_t p = macroPos + 1;
+ vector<MathData> detachedArgs;
+ MathAtom scriptToPutAround;
+
+ // find cursor slice again of this MathData
+ int thisSlice = -1;
+ if (cur)
+ thisSlice = cur->find(*this);
+ int thisPos = -1;
+ if (thisSlice != -1)
+ thisPos = (*cur)[thisSlice].pos();
+
+ // find arguments behind the macro
+ if (!interactiveInit) {
+ collectOptionalParameters(cur, macroOptionals, detachedArgs, p,
+ macroPos, thisPos, thisSlice);
+ collectParameters(cur, macroNumArgs, detachedArgs, p,
+ scriptToPutAround, macroPos, thisPos, thisSlice);
+ }
+
+ // attach arguments back to macro inset
+ macroInset->attachArguments(detachedArgs, macroNumArgs, macroOptionals);
+
+ // found tail script? E.g. \foo{a}b^x
+ if (scriptToPutAround.nucleus()) {
+ // put macro into a script inset
+ scriptToPutAround.nucleus()->asScriptInset()->nuc()[0]
+ = operator[](macroPos);
+ operator[](macroPos) = scriptToPutAround;
+
+ // go into the script inset nucleus
+ if (cur && thisPos == int(macroPos))
+ cur->append(0, 0);
+
+ // get pointer to "deep" copied macro inset
+ InsetMathScript * scriptInset
+ = operator[](macroPos).nucleus()->asScriptInset();
+ macroInset = scriptInset->nuc()[0].nucleus()->asMacro();
+ }
+
+ // remove them from the MathData
+ erase(begin() + macroPos + 1, begin() + p);
+
+ // cursor outside this MathData?
+ if (thisSlice == -1)
+ return;
+
+ // fix cursor if right of p
+ if (thisPos >= int(p))
+ (*cur)[thisSlice].pos() -= p - (macroPos + 1);
+
+ // was the macro inset just inserted interactively and was now folded
+ // and the cursor is just behind?
+ if ((*cur)[thisSlice].pos() == int(macroPos + 1)
+ && interactiveInit
+ && fromInitToNormalMode
+ && macroInset->arity() > 0
+ && thisSlice + 1 == int(cur->depth())) {
+ // then enter it if the cursor was just behind
+ (*cur)[thisSlice].pos() = macroPos;
+ cur->push_back(CursorSlice(*macroInset));
+ macroInset->idxFirst(*cur);
+ }
+}
+
+
+void MathData::collectOptionalParameters(Cursor * cur,
+ const size_type numOptionalParams, vector<MathData> & params,
+ size_t & pos, const pos_type macroPos, const int thisPos, const int thisSlice)
+{
+ // insert optional arguments?
+ while (params.size() < numOptionalParams && pos < size()) {
+ // is a [] block following which could be an optional parameter?
+ if (operator[](pos)->getChar() != '[')
+ break;
+
+ // found possible optional argument, look for "]"
+ size_t right = pos + 1;
+ for (; right < size(); ++right) {
+ if (operator[](right)->getChar() == ']')
+ // found right end
+ break;
+ }
+
+ // found?
+ if (right >= size()) {
+ // no ] found, so it's not an optional argument
+ break;
+ }
+
+ // add everything between [ and ] as optional argument
+ MathData optarg(begin() + pos + 1, begin() + right);
+
+ // a brace?
+ bool brace = false;
+ if (optarg.size() == 1 && optarg[0]->asBraceInset()) {
+ brace = true;
+ params.push_back(optarg[0]->asBraceInset()->cell(0));
+ } else
+ params.push_back(optarg);
+
+ // place cursor in optional argument of macro
+ if (thisSlice != -1
+ && thisPos >= int(pos) && thisPos <= int(right)) {
+ int paramPos = max(0, thisPos - int(pos) - 1);
+ vector<CursorSlice> x;
+ cur->cutOff(thisSlice, x);
+ (*cur)[thisSlice].pos() = macroPos;
+ if (brace) {
+ paramPos = x[0].pos();
+ x.erase(x.begin());
+ }
+ cur->append(0, paramPos);
+ cur->append(x);
+ }
+ pos = right + 1;
+ }
+
+ // fill up empty optional parameters
+ while (params.size() < numOptionalParams)
+ params.push_back(MathData());
+}
+
+
+void MathData::collectParameters(Cursor * cur,
+ const size_type numParams, vector<MathData> & params,
+ size_t & pos, MathAtom & scriptToPutAround,
+ const pos_type macroPos, const int thisPos, const int thisSlice)
+{
+ // insert normal arguments
+ for (; params.size() < numParams && pos < size();) {
+ MathAtom & cell = operator[](pos);
+
+ // fix cursor
+ vector<CursorSlice> argSlices;
+ int argPos = 0;
+ if (thisSlice != -1 && thisPos == int(pos))
+ cur->cutOff(thisSlice, argSlices);
+
+ // which kind of parameter is it? In {}? With index x^n?
+ InsetMathBrace const * brace = cell->asBraceInset();
+ if (brace) {
+ // found brace, convert into argument
+ params.push_back(brace->cell(0));
+
+ // cursor inside of the brace or just in front of?
+ if (thisPos == int(pos) && !argSlices.empty()) {
+ argPos = argSlices[0].pos();
+ argSlices.erase(argSlices.begin());
+ }
+ } else if (cell->asScriptInset() && params.size() + 1 == numParams) {
+ // last inset with scripts without braces
+ // -> they belong to the macro, not the argument
+ InsetMathScript * script = cell.nucleus()->asScriptInset();
+ if (script->nuc().size() == 1 && script->nuc()[0]->asBraceInset())
+ // nucleus in brace? Unpack!
+ params.push_back(script->nuc()[0]->asBraceInset()->cell(0));
+ else
+ params.push_back(script->nuc());
+
+ // script will be put around below
+ scriptToPutAround = cell;
+
+ // this should only happen after loading, so make cursor handling simple
+ if (thisPos >= int(macroPos) && thisPos <= int(macroPos + numParams)) {
+ argSlices.clear();
+ if (cur)
+ cur->append(0, 0);
+ }
+ } else {
+ // the simplest case: plain inset
+ MathData array;
+ array.insert(0, cell);
+ params.push_back(array);
+ }
+
+ // put cursor in argument again
+ if (thisSlice != - 1 && thisPos == int(pos)) {
+ cur->append(params.size() - 1, argPos);
+ cur->append(argSlices);
+ (*cur)[thisSlice].pos() = macroPos;
+ }
+
+ ++pos;
+ }
+}
+
+
int MathData::pos2x(size_type pos) const
{
return pos2x(pos, 0);
if ((*it)->getChar() == ' ')
x += glue;
//lyxerr << "char: " << (*it)->getChar()
- // << "width: " << (*it)->width() << std::endl;
- x += (*it)->width();
+ // << "width: " << (*it)->width() << endl;
+ x += atom_dims_[i].wid;
}
return x;
}
lastx = currx;
if ((*it)->getChar() == ' ')
currx += glue;
- currx += (*it)->width();
+ currx += atom_dims_[it - begin()].wid;
}
/**
int MathData::dist(BufferView const & bv, int x, int y) const
{
- int xx = 0;
- int yy = 0;
+ return bv.coordCache().getArrays().squareDistance(this, x, y);
+}
- const int xo_ = xo(bv);
- const int yo_ = yo(bv);
- if (x < xo_)
- xx = xo_ - x;
- else if (x > xo_ + width())
- xx = x - xo_ - width();
+void MathData::setXY(BufferView & bv, int x, int y) const
+{
+ //lyxerr << "setting position cache for MathData " << this << endl;
+ bv.coordCache().arrays().add(this, x, y);
+}
- if (y < yo_ - ascent())
- yy = yo_ - ascent() - y;
- else if (y > yo_ + descent())
- yy = y - yo_ - descent();
- return xx + yy;
+Dimension const & MathData::dimension(BufferView const & bv) const
+{
+ return bv.coordCache().getArrays().dim(this);
}
-void MathData::setXY(BufferView & bv, int x, int y) const
+int MathData::xm(BufferView const & bv) const
{
- //lyxerr << "setting position cache for MathData " << this << std::endl;
- bv.coordCache().arrays().add(this, x, y);
+ Geometry const & g = bv.coordCache().getArrays().geometry(this);
+
+ return g.pos.x_ + g.dim.wid / 2;
+}
+
+
+int MathData::ym(BufferView const & bv) const
+{
+ Geometry const & g = bv.coordCache().getArrays().geometry(this);
+
+ return g.pos.y_ + (g.dim.des - g.dim.asc) / 2;
}
}
-std::ostream & operator<<(std::ostream & os, MathData const & ar)
+ostream & operator<<(ostream & os, MathData const & ar)
{
odocstringstream oss;
NormalStream ns(oss);
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