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42c8e7bff9
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2746 a592a061-630c-0410-9148-cb99ea01b6c8
113 lines
2.0 KiB
C
113 lines
2.0 KiB
C
#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "math_decorationinset.h"
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#include "mathed/support.h"
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#include "math_parser.h"
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#include "support/LOstream.h"
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using std::ostream;
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MathDecorationInset::MathDecorationInset(string const & name)
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: MathNestInset(1), name_(name)
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{}
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MathInset * MathDecorationInset::clone() const
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{
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return new MathDecorationInset(*this);
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}
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bool MathDecorationInset::upper() const
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{
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return name_ != "underline" && name_ != "underbrace";
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}
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bool MathDecorationInset::isScriptable() const
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{
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return
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name_ == "overbrace" ||
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name_ == "underbrace" ||
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name_ == "overleftarrow" ||
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name_ == "overrightarrow";
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}
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bool MathDecorationInset::protect() const
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{
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return
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name_ == "overbrace" ||
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name_ == "underbrace" ||
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name_ == "overleftarrow" ||
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name_ == "overrightarrow";
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}
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bool MathDecorationInset::wide() const
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{
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return
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name_ == "overbrace" ||
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name_ == "underbrace" ||
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name_ == "overleftarrow" ||
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name_ == "overrightarrow" ||
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name_ == "widehat" ||
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name_ == "widetilde";
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}
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void MathDecorationInset::metrics(MathStyles st) const
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{
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xcell(0).metrics(st);
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size_ = st;
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width_ = xcell(0).width();
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ascent_ = xcell(0).ascent();
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descent_ = xcell(0).descent();
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dh_ = 5; //mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);
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if (upper()) {
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dy_ = -ascent_ - dh_;
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ascent_ += dh_ + 1;
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} else {
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dy_ = descent_ + 1;
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descent_ += dh_ + 2;
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}
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}
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void MathDecorationInset::draw(Painter & pain, int x, int y) const
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{
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xo(x);
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yo(x);
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xcell(0).draw(pain, x, y);
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if (wide())
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mathed_draw_deco(pain, x, y + dy_, width_, dh_, name_);
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else {
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int w = 2 + mathed_char_width(LM_TC_VAR, size(), 'x');
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mathed_draw_deco(pain, x + (width_ - w) / 2, y + dy_, w, dh_, name_);
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}
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}
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void MathDecorationInset::write(ostream & os, bool fragile) const
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{
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if (fragile && protect())
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os << "\\protect";
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os << '\\' << name_ << '{';
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cell(0).write(os, fragile);
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os << '}';
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}
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void MathDecorationInset::writeNormal(ostream & os) const
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{
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os << "[" << name_ << " ";
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cell(0).writeNormal(os);
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os << "] ";
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}
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