mirror of
https://git.lyx.org/repos/lyx.git
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f1c24d1009
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4417 a592a061-630c-0410-9148-cb99ea01b6c8
447 lines
7.8 KiB
C
447 lines
7.8 KiB
C
#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "math_scriptinset.h"
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#include "math_support.h"
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#include "math_symbolinset.h"
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#include "math_mathmlstream.h"
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#include "support/LAssert.h"
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#include "debug.h"
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using std::max;
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MathScriptInset::MathScriptInset()
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: MathNestInset(2), limits_(0)
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{
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script_[0] = false;
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script_[1] = false;
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}
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MathScriptInset::MathScriptInset(bool up)
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: MathNestInset(2), limits_(0)
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{
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script_[0] = !up;
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script_[1] = up;
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}
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MathInset * MathScriptInset::clone() const
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{
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return new MathScriptInset(*this);
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}
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MathScriptInset const * MathScriptInset::asScriptInset() const
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{
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return this;
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}
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MathScriptInset * MathScriptInset::asScriptInset()
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{
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return this;
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}
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MathXArray const & MathScriptInset::up() const
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{
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return xcell(1);
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}
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MathXArray const & MathScriptInset::down() const
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{
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return xcell(0);
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}
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MathXArray & MathScriptInset::up()
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{
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return xcell(1);
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}
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MathXArray & MathScriptInset::down()
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{
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return xcell(0);
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}
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void MathScriptInset::ensure(bool up)
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{
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script_[up] = true;
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}
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int MathScriptInset::dy0(MathInset const * nuc) const
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{
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int nd = ndes(nuc);
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if (!hasDown())
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return nd;
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int des = down().ascent();
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if (hasLimits(nuc))
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des += nd + 2;
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else
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des = max(des, nd);
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return des;
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}
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int MathScriptInset::dy1(MathInset const * nuc) const
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{
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int na = nasc(nuc);
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if (!hasUp())
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return na;
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int asc = up().descent();
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if (hasLimits(nuc))
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asc += na + 2;
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else
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asc = max(asc, na);
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asc = max(asc, mathed_char_ascent(font_, 'I'));
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return asc;
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}
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int MathScriptInset::dx0(MathInset const * nuc) const
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{
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lyx::Assert(hasDown());
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return hasLimits(nuc) ? (width2(nuc) - down().width()) / 2 : nwid(nuc);
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}
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int MathScriptInset::dx1(MathInset const * nuc) const
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{
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lyx::Assert(hasUp());
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return hasLimits(nuc) ? (width2(nuc) - up().width()) / 2 : nwid(nuc);
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}
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int MathScriptInset::dxx(MathInset const * nuc) const
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{
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//lyx::Assert(nuc());
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return hasLimits(nuc) ? (width2(nuc) - nwid(nuc)) / 2 : 0;
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}
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int MathScriptInset::ascent2(MathInset const * nuc) const
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{
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return dy1(nuc) + (hasUp() ? up().ascent() : 0);
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}
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int MathScriptInset::descent2(MathInset const * nuc) const
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{
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return dy0(nuc) + (hasDown() ? down().descent() : 0);
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}
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int MathScriptInset::width2(MathInset const * nuc) const
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{
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int wid = 0;
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if (hasLimits(nuc)) {
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wid = nwid(nuc);
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if (hasUp())
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wid = max(wid, up().width());
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if (hasDown())
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wid = max(wid, down().width());
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} else {
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if (hasUp())
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wid = max(wid, up().width());
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if (hasDown())
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wid = max(wid, down().width());
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wid += nwid(nuc);
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}
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return wid;
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}
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int MathScriptInset::nwid(MathInset const * nuc) const
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{
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return nuc ? nuc->width() : mathed_char_width(font_, '.');
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}
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int MathScriptInset::nasc(MathInset const * nuc) const
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{
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return nuc ? nuc->ascent() : mathed_char_ascent(font_, 'I');
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}
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int MathScriptInset::ndes(MathInset const * nuc) const
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{
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return nuc ? nuc->descent() : mathed_char_descent(font_, 'I');
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}
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void MathScriptInset::metrics(MathMetricsInfo & mi) const
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{
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metrics(0, mi);
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}
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void MathScriptInset::metrics(MathInset const * nuc, MathMetricsInfo & mi) const
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{
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if (nuc)
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nuc->metrics(mi);
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MathNestInset::metrics(mi);
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MathScriptChanger dummy(mi.base);
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ascent_ = ascent2(nuc);
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descent_ = descent2(nuc);
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width_ = width2(nuc);
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}
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void MathScriptInset::draw(MathPainterInfo & pi, int x, int y) const
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{
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//lyxerr << "unexpected call to MathScriptInset::draw()\n";
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draw(0, pi, x, y);
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}
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void MathScriptInset::draw(MathInset const * nuc, MathPainterInfo & pi,
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int x, int y) const
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{
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if (nuc)
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nuc->draw(pi, x + dxx(nuc), y);
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else if (editing())
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drawStr(pi, font_, x + dxx(nuc), y, ".");
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MathScriptChanger dummy(pi.base);
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if (hasUp())
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up().draw(pi, x + dx1(nuc), y - dy1(nuc));
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if (hasDown())
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down().draw(pi, x + dx0(nuc), y + dy0(nuc));
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}
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void MathScriptInset::metricsT(TextMetricsInfo const & mi) const
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{
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metricsT(0, mi);
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}
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void MathScriptInset::metricsT(MathInset const * nuc,
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TextMetricsInfo const & mi) const
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{
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if (hasUp())
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up().metricsT(mi);
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if (hasDown())
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down().metricsT(mi);
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if (nuc)
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nuc->metricsT(mi);
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//ascent_ = ascent2(nuc);
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//descent_ = descent2(nuc);
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//width_ = width2(nuc);
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}
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void MathScriptInset::drawT(TextPainter & pain, int x, int y) const
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{
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//lyxerr << "unexpected call to MathScriptInset::draw()\n";
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drawT(0, pain, x, y);
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}
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void MathScriptInset::drawT(MathInset const * nuc, TextPainter & pain,
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int x, int y) const
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{
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if (nuc)
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nuc->drawT(pain, x + dxx(nuc), y);
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if (hasUp())
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up().drawT(pain, x + dx1(nuc), y - dy1(nuc));
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if (hasDown())
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down().drawT(pain, x + dx0(nuc), y + dy0(nuc));
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}
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bool MathScriptInset::hasLimits(MathInset const * nuc) const
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{
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// obviuos cases
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if (limits_ == 1)
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return true;
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if (limits_ == -1)
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return false;
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// we can only display limits if the nucleus wants some
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if (!nuc)
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return false;
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if (!nuc->isScriptable())
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return false;
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// per default \int has limits beside the \int even in displayed formulas
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if (nuc->asSymbolInset())
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if (nuc->asSymbolInset()->name().find("int") != string::npos)
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return false;
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// assume "real" limits for everything else
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return true;
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}
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void MathScriptInset::removeEmptyScripts()
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{
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for (int i = 0; i <= 1; ++i)
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if (script_[i] && cell(i).size() == 0) {
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cell(i).clear();
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script_[i] = false;
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}
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}
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void MathScriptInset::removeScript(bool up)
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{
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cell(up).clear();
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script_[up] = false;
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}
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bool MathScriptInset::has(bool up) const
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{
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return script_[up];
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}
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bool MathScriptInset::empty() const
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{
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return !script_[0] && !script_[1];
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}
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bool MathScriptInset::hasUp() const
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{
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return script_[1];
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}
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bool MathScriptInset::hasDown() const
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{
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return script_[0];
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}
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bool MathScriptInset::idxRight(MathInset::idx_type &,
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MathInset::pos_type &) const
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{
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return false;
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}
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bool MathScriptInset::idxLeft(MathInset::idx_type &,
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MathInset::pos_type &) const
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{
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return false;
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}
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void MathScriptInset::write(WriteStream & os) const
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{
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//lyxerr << "unexpected call to MathScriptInset::write()\n";
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write2(0, os);
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}
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void MathScriptInset::write2(MathInset const * nuc, WriteStream & os) const
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{
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if (nuc) {
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os << nuc;
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if (nuc->takesLimits()) {
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if (limits_ == -1)
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os << "\\nolimits ";
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if (limits_ == 1)
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os << "\\limits ";
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}
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} else
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if (os.firstitem())
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lyxerr[Debug::MATHED] << "suppressing {} when writing\n";
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else
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os << "{}";
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if (hasDown() && down().data_.size())
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os << "_{" << down().data_ << '}';
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if (hasUp() && up().data_.size())
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os << "^{" << up().data_ << '}';
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}
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void MathScriptInset::normalize(NormalStream & os) const
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{
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//lyxerr << "unexpected call to MathScriptInset::normalize()\n";
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normalize2(0, os);
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}
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void MathScriptInset::normalize2(MathInset const * nuc, NormalStream & os) const
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{
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bool d = hasDown() && down().data_.size();
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bool u = hasUp() && up().data_.size();
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if (u)
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os << "[sup ";
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if (d)
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os << "[sub ";
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if (nuc)
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os << nuc << ' ';
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else
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os << "[par]";
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if (d)
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os << down().data_ << ']';
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if (u)
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os << up().data_ << ']';
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}
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void MathScriptInset::maplize2(MathInset const * nuc, MapleStream & os) const
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{
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if (nuc)
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os << nuc;
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if (hasDown() && down().data_.size())
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os << '[' << down().data_ << ']';
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if (hasUp() && up().data_.size())
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os << "^(" << up().data_ << ')';
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}
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void MathScriptInset::mathmlize2(MathInset const * nuc, MathMLStream & os) const
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{
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bool d = hasDown() && down().data_.size();
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bool u = hasUp() && up().data_.size();
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if (u && d)
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os << MTag("msubsup");
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else if (u)
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os << MTag("msup");
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else if (d)
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os << MTag("msub");
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if (nuc)
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os << nuc;
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else
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os << "<mrow/>";
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if (u && d)
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os << down().data_ << up().data_ << ETag("msubsup");
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else if (u)
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os << up().data_ << ETag("msup");
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else if (d)
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os << down().data_ << ETag("msub");
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}
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void MathScriptInset::octavize2(MathInset const * nuc, OctaveStream & os) const
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{
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if (nuc)
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os << nuc;
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if (hasDown() && down().data_.size())
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os << '[' << down().data_ << ']';
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if (hasUp() && up().data_.size())
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os << "^(" << up().data_ << ')';
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}
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