+/**
+ * \file math_scriptinset.C
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author André Pönitz
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
#include <config.h>
+
+#include "math_scriptinset.h"
+#include "math_data.h"
+#include "math_mathmlstream.h"
+#include "math_support.h"
+#include "math_symbolinset.h"
+#include "dispatchresult.h"
+#include "cursor.h"
#include "debug.h"
-#include "support/LOstream.h"
+#include "funcrequest.h"
+
+#include <boost/assert.hpp>
+
+using std::string;
+using std::max;
+using std::auto_ptr;
+using std::endl;
-#ifdef __GNUG__
-#pragma implementation
-#endif
-#include "math_scriptinset.h"
+
+MathScriptInset::MathScriptInset()
+ : MathNestInset(1), cell_1_is_up_(false), limits_(0)
+{}
MathScriptInset::MathScriptInset(bool up)
- : MathNestInset(1), up_(up)
+ : MathNestInset(2), cell_1_is_up_(up), limits_(0)
{}
-MathInset * MathScriptInset::clone() const
+MathScriptInset::MathScriptInset(MathAtom const & at, bool up)
+ : MathNestInset(2), cell_1_is_up_(up), limits_(0)
+{
+ BOOST_ASSERT(nargs() >= 1);
+ cell(0).push_back(at);
+}
+
+
+
+auto_ptr<InsetBase> MathScriptInset::clone() const
+{
+ return auto_ptr<InsetBase>(new MathScriptInset(*this));
+}
+
+
+MathScriptInset const * MathScriptInset::asScriptInset() const
+{
+ return this;
+}
+
+
+MathScriptInset * MathScriptInset::asScriptInset()
+{
+ return this;
+}
+
+
+bool MathScriptInset::idxFirst(LCursor & cur) const
+{
+ cur.idx() = 0;
+ cur.pos() = 0;
+ return true;
+}
+
+
+bool MathScriptInset::idxLast(LCursor & cur) const
+{
+ cur.idx() = 0;
+ cur.pos() = nuc().size();
+ return true;
+}
+
+
+MathArray const & MathScriptInset::down() const
+{
+ if (nargs() == 3)
+ return cell(2);
+ BOOST_ASSERT(nargs() > 1);
+ return cell(1);
+}
+
+
+MathArray & MathScriptInset::down()
+{
+ if (nargs() == 3)
+ return cell(2);
+ BOOST_ASSERT(nargs() > 1);
+ return cell(1);
+}
+
+
+MathArray const & MathScriptInset::up() const
+{
+ BOOST_ASSERT(nargs() > 1);
+ return cell(1);
+}
+
+
+MathArray & MathScriptInset::up()
+{
+ BOOST_ASSERT(nargs() > 1);
+ return cell(1);
+}
+
+
+void MathScriptInset::ensure(bool up)
+{
+ if (nargs() == 1) {
+ // just nucleus so far
+ cells_.push_back(MathArray());
+ cell_1_is_up_ = up;
+ } else if (nargs() == 2 && !has(up)) {
+ if (up) {
+ cells_.push_back(cell(1));
+ cell(1).clear();
+ } else {
+ cells_.push_back(MathArray());
+ }
+ }
+}
+
+
+MathArray const & MathScriptInset::nuc() const
+{
+ return cell(0);
+}
+
+
+MathArray & MathScriptInset::nuc()
+{
+ return cell(0);
+}
+
+
+int MathScriptInset::dy0() const
+{
+ int nd = ndes();
+ if (!hasDown())
+ return nd;
+ int des = down().ascent();
+ if (hasLimits())
+ des += nd + 2;
+ else
+ des = max(des, nd);
+ return des;
+}
+
+
+int MathScriptInset::dy1() const
+{
+ int na = nasc();
+ if (!hasUp())
+ return na;
+ int asc = up().descent();
+ if (hasLimits())
+ asc += na + 2;
+ else
+ asc = max(asc, na);
+ asc = max(asc, 5);
+ return asc;
+}
+
+
+int MathScriptInset::dx0() const
+{
+ BOOST_ASSERT(hasDown());
+ return hasLimits() ? (dim_.wid - down().width()) / 2 : nwid();
+}
+
+
+int MathScriptInset::dx1() const
+{
+ BOOST_ASSERT(hasUp());
+ return hasLimits() ? (dim_.wid - up().width()) / 2 : nwid();
+}
+
+
+int MathScriptInset::dxx() const
+{
+ return hasLimits() ? (dim_.wid - nwid()) / 2 : 0;
+}
+
+
+int MathScriptInset::nwid() const
+{
+ return nuc().size() ? nuc().width() : 2;
+}
+
+
+int MathScriptInset::nasc() const
+{
+ return nuc().size() ? nuc().ascent() : 5;
+}
+
+
+int MathScriptInset::ndes() const
+{
+ return nuc().size() ? nuc().descent() : 0;
+}
+
+
+void MathScriptInset::metrics(MetricsInfo & mi, Dimension & dim) const
{
- return new MathScriptInset(*this);
+ cell(0).metrics(mi);
+ ScriptChanger dummy(mi.base);
+ if (nargs() > 1)
+ cell(1).metrics(mi);
+ if (nargs() > 2)
+ cell(2).metrics(mi);
+ dim.wid = 0;
+ if (hasLimits()) {
+ dim.wid = nwid();
+ if (hasUp())
+ dim.wid = max(dim.wid, up().width());
+ if (hasDown())
+ dim.wid = max(dim.wid, down().width());
+ } else {
+ if (hasUp())
+ dim.wid = max(dim.wid, up().width());
+ if (hasDown())
+ dim.wid = max(dim.wid, down().width());
+ dim.wid += nwid();
+ }
+ dim.asc = dy1() + (hasUp() ? up().ascent() : 0);
+ dim.des = dy0() + (hasDown() ? down().descent() : 0);
+ metricsMarkers(dim);
+ dim_ = dim;
}
-void MathScriptInset::write(std::ostream & os, bool fragile) const
+void MathScriptInset::draw(PainterInfo & pi, int x, int y) const
{
- cell(0).write(os, fragile);
+ if (nuc().size())
+ nuc().draw(pi, x + dxx(), y);
+ else {
+ nuc().setXY(x + dxx(), y);
+ if (editing(pi.base.bv))
+ drawStr(pi, pi.base.font, x + dxx(), y, ".");
+ }
+ ScriptChanger dummy(pi.base);
+ if (hasUp())
+ up().draw(pi, x + dx1(), y - dy1());
+ if (hasDown())
+ down().draw(pi, x + dx0(), y + dy0());
+ drawMarkers(pi, x, y);
}
-void MathScriptInset::metrics(MathStyles st) const
+void MathScriptInset::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
{
- size_ = st;
- xcell(0).metrics(st);
- width_ = xcell(0).width();
- ascent_ = xcell(0).ascent();
- descent_ = xcell(0).descent();
- //lyxerr << "MathScriptInset::metrics: w: " << width_ << " a: " << ascent_
- // << " d: " << descent_ << "\n";
+ if (hasUp())
+ up().metricsT(mi, dim);
+ if (hasDown())
+ down().metricsT(mi, dim);
+ nuc().metricsT(mi, dim);
}
-void MathScriptInset::draw(Painter & pain, int x, int y) const
+void MathScriptInset::drawT(TextPainter & pain, int x, int y) const
{
- xo(x);
- yo(y);
- xcell(0).draw(pain, x, y);
+ if (nuc().size())
+ nuc().drawT(pain, x + dxx(), y);
+ if (hasUp())
+ up().drawT(pain, x + dx1(), y - dy1());
+ if (hasDown())
+ down().drawT(pain, x + dx0(), y + dy0());
+}
+
+
+
+bool MathScriptInset::hasLimits() const
+{
+ // obvious cases
+ if (limits_ == 1)
+ return true;
+ if (limits_ == -1)
+ return false;
+
+ // we can only display limits if the nucleus wants some
+ if (!nuc().size())
+ return false;
+ if (!nuc().back()->isScriptable())
+ return false;
+
+ // per default \int has limits beside the \int even in displayed formulas
+ if (nuc().back()->asSymbolInset())
+ if (nuc().back()->asSymbolInset()->name().find("int") != string::npos)
+ return false;
+
+ // assume "real" limits for everything else
+ return true;
+}
+
+
+void MathScriptInset::removeScript(bool up)
+{
+ lyxerr << "MathNestInset::removeScript: 1 up: " << up << endl;
+ if (nargs() == 2) {
+ lyxerr << "MathNestInset::removeScript: a up: " << up << endl;
+ if (up == cell_1_is_up_)
+ cells_.pop_back();
+ lyxerr << "MathNestInset::removeScript: b up: " << up << endl;
+ } else if (nargs() == 3) {
+ if (up == true) {
+ swap(cells_[1], cells_[2]);
+ cell_1_is_up_ = false;
+ } else {
+ cell_1_is_up_ = true;
+ }
+ cells_.pop_back();
+ }
+ lyxerr << "MathNestInset::removeScript: 2 up: " << up << endl;
+}
+
+
+bool MathScriptInset::has(bool up) const
+{
+ return idxOfScript(up);
+}
+
+
+bool MathScriptInset::hasUp() const
+{
+ //lyxerr << "1up: " << bool(cell_1_is_up_) << endl;
+ //lyxerr << "hasUp: " << bool(idxOfScript(true)) << endl;
+ return idxOfScript(true);
+}
+
+
+bool MathScriptInset::hasDown() const
+{
+ //lyxerr << "1up: " << bool(cell_1_is_up_) << endl;
+ //lyxerr << "hasDown: " << bool(idxOfScript(false)) << endl;
+ return idxOfScript(false);
+}
+
+
+InsetBase::idx_type MathScriptInset::idxOfScript(bool up) const
+{
+ if (nargs() == 1)
+ return 0;
+ if (nargs() == 2)
+ return (cell_1_is_up_ == up) ? 1 : 0;
+ if (nargs() == 3)
+ return up ? 1 : 2;
+ BOOST_ASSERT(false);
+ // Silence compiler
+ return 0;
+}
+
+
+bool MathScriptInset::idxRight(LCursor &) const
+{
+ return false;
+}
+
+
+bool MathScriptInset::idxLeft(LCursor &) const
+{
+ return false;
+}
+
+
+bool MathScriptInset::idxUpDown(LCursor & cur, bool up) const
+{
+ // in nucleus?
+ if (cur.idx() == 0) {
+ // don't go up/down if there is no cell in this direction
+ if (!has(up))
+ return false;
+ // go up/down only if in the last position
+ // or in the first position of something with displayed limits
+ if (cur.pos() == cur.lastpos() || (cur.pos() == 0 && hasLimits())) {
+ cur.idx() = idxOfScript(up);
+ cur.pos() = 0;
+ return true;
+ }
+ return false;
+ }
+
+ // Are we 'up'?
+ if (has(up) && cur.idx() == idxOfScript(true)) {
+ // can't go further up
+ if (up)
+ return false;
+ // otherwise go to last position in the nucleus
+ cur.idx() = 0;
+ cur.pos() = cur.lastpos();
+ return true;
+ }
+
+ // Are we 'down'?
+ if (has(up) && cur.idx() == idxOfScript(false)) {
+ // can't go further down
+ if (!up)
+ return false;
+ // otherwise go to last position in the nucleus
+ cur.idx() = 0;
+ cur.pos() = cur.lastpos();
+ return true;
+ }
+
+ return false;
+}
+
+
+void MathScriptInset::write(WriteStream & os) const
+{
+ if (nuc().size()) {
+ os << nuc();
+ //if (nuc().back()->takesLimits()) {
+ if (limits_ == -1)
+ os << "\\nolimits ";
+ if (limits_ == 1)
+ os << "\\limits ";
+ //}
+ } else {
+ if (os.firstitem())
+ lyxerr[Debug::MATHED] << "suppressing {} when writing"
+ << endl;
+ else
+ os << "{}";
+ }
+
+ if (hasDown() && down().size())
+ os << "_{" << down() << '}';
+
+ if (hasUp() && up().size())
+ os << "^{" << up() << '}';
+
+ if (lock_ && !os.latex())
+ os << "\\lyxlock ";
+}
+
+
+void MathScriptInset::normalize(NormalStream & os) const
+{
+ bool d = hasDown() && down().size();
+ bool u = hasUp() && up().size();
+
+ if (u && d)
+ os << "[subsup ";
+ else if (u)
+ os << "[sup ";
+ else if (d)
+ os << "[sub ";
+
+ if (nuc().size())
+ os << nuc() << ' ';
+ else
+ os << "[par]";
+
+ if (u && d)
+ os << down() << ' ' << up() << ']';
+ else if (d)
+ os << down() << ']';
+ else if (u)
+ os << up() << ']';
+}
+
+
+void MathScriptInset::maple(MapleStream & os) const
+{
+ if (nuc().size())
+ os << nuc();
+ if (hasDown() && down().size())
+ os << '[' << down() << ']';
+ if (hasUp() && up().size())
+ os << "^(" << up() << ')';
+}
+
+
+void MathScriptInset::mathematica(MathematicaStream & os) const
+{
+ bool d = hasDown() && down().size();
+ bool u = hasUp() && up().size();
+
+ if (nuc().size()) {
+ if (d)
+ os << "Subscript[" << nuc();
+ else
+ os << nuc();
+ }
+
+ if (u)
+ os << "^(" << up() << ')';
+
+ if (nuc().size()) {
+ if (d)
+ os << ',' << down() << ']';
+ }
+}
+
+
+void MathScriptInset::mathmlize(MathMLStream & os) const
+{
+ bool d = hasDown() && down().size();
+ bool u = hasUp() && up().size();
+
+ if (u && d)
+ os << MTag("msubsup");
+ else if (u)
+ os << MTag("msup");
+ else if (d)
+ os << MTag("msub");
+
+ if (nuc().size())
+ os << nuc();
+ else
+ os << "<mrow/>";
+
+ if (u && d)
+ os << down() << up() << ETag("msubsup");
+ else if (u)
+ os << up() << ETag("msup");
+ else if (d)
+ os << down() << ETag("msub");
+}
+
+
+void MathScriptInset::octave(OctaveStream & os) const
+{
+ if (nuc().size())
+ os << nuc();
+ if (hasDown() && down().size())
+ os << '[' << down() << ']';
+ if (hasUp() && up().size())
+ os << "^(" << up() << ')';
+}
+
+
+void MathScriptInset::infoize(std::ostream & os) const
+{
+ os << "Scripts";
+}
+
+
+void MathScriptInset::infoize2(std::ostream & os) const
+{
+ if (limits_)
+ os << (limits_ == 1 ? ", Displayed limits" : ", Inlined limits");
+}
+
+
+void MathScriptInset::notifyCursorLeaves(LCursor & cur)
+{
+ MathNestInset::notifyCursorLeaves(cur);
+
+ // remove empty scripts if possible
+ if (nargs() > 2 && cur.idx() == 2 && cell(2).empty()) {
+ // must be a subscript...
+ removeScript(false);
+ // sanitize cursor, even if this slice will be removed immediately
+ cur.idx() = 0;
+ cur.pos() = 0;
+ } else if (nargs() > 1 && cur.idx() == 1 && cell(1).empty()) {
+ // could be either subscript or super script
+ removeScript(cell_1_is_up_);
+ // sanitize cursor, even if this slice will be removed immediately
+ cur.idx() = 0;
+ cur.pos() = 0;
+ }
+}
+
+
+void MathScriptInset::priv_dispatch(LCursor & cur, FuncRequest & cmd)
+{
+ //lyxerr << "MathScriptInset: request: " << cmd << std::endl;
+
+ if (cmd.action == LFUN_MATH_LIMITS) {
+ if (!cmd.argument.empty()) {
+ if (cmd.argument == "limits")
+ limits_ = 1;
+ else if (cmd.argument == "nolimits")
+ limits_ = -1;
+ else
+ limits_ = 0;
+ } else if (limits_ == 0)
+ limits_ = hasLimits() ? -1 : 1;
+ else
+ limits_ = 0;
+ return;
+ }
+
+ MathNestInset::priv_dispatch(cur, cmd);
}
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