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https://git.lyx.org/repos/lyx.git
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285952e130
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7079 a592a061-630c-0410-9148-cb99ea01b6c8
1516 lines
28 KiB
C
1516 lines
28 KiB
C
/*
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* File: math_cursor.C
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* Purpose: Interaction for mathed
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* Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
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* Created: January 1996
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* Description: Math interaction for a WYSIWYG math editor.
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*
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* Dependencies: Xlib, XForms
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*
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* Copyright: 1996, Alejandro Aguilar Sierra
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*
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* Version: 0.8beta, Math & Lyx project.
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*
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* You are free to use and modify this code under the terms of
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* the GNU General Public Licence version 2 or later.
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*/
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#include <config.h>
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#include <lyxrc.h>
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#include "support/lstrings.h"
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#include "support/LAssert.h"
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#include "support/limited_stack.h"
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#include "debug.h"
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#include "Lsstream.h"
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#include "frontends/Painter.h"
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#include "math_cursor.h"
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#include "formulabase.h"
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#include "funcrequest.h"
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#include "math_autocorrect.h"
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#include "math_braceinset.h"
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#include "math_commentinset.h"
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#include "math_charinset.h"
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#include "math_extern.h"
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#include "math_factory.h"
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#include "math_fontinset.h"
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#include "math_gridinset.h"
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#include "math_iterator.h"
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#include "math_macroarg.h"
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#include "math_macrotemplate.h"
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#include "math_mathmlstream.h"
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#include "math_scriptinset.h"
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#include "math_spaceinset.h"
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#include "math_support.h"
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#include "math_unknowninset.h"
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#include <algorithm>
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#include <cctype>
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//#define FILEDEBUG 1
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using std::endl;
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using std::min;
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using std::max;
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using std::swap;
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using std::vector;
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using std::ostringstream;
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using std::isalpha;
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// matheds own cut buffer
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limited_stack<string> theCutBuffer;
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MathCursor::MathCursor(InsetFormulaBase * formula, bool front)
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: formula_(formula), autocorrect_(false), selection_(false), targetx_(-1)
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{
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front ? first() : last();
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Anchor_ = Cursor_;
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}
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MathCursor::~MathCursor()
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{
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// ensure that 'notifyCursorLeave' is called
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while (popLeft())
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;
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}
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void MathCursor::push(MathAtom & t)
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{
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Cursor_.push_back(MathCursorPos(t.nucleus()));
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}
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void MathCursor::pushLeft(MathAtom & t)
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{
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//lyxerr << "Entering atom " << t << " left\n";
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push(t);
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t->idxFirst(idx(), pos());
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}
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void MathCursor::pushRight(MathAtom & t)
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{
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//lyxerr << "Entering atom " << t << " right\n";
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posLeft();
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push(t);
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t->idxLast(idx(), pos());
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}
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bool MathCursor::popLeft()
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{
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//lyxerr << "Leaving atom to the left\n";
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if (depth() <= 1) {
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if (depth() == 1)
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par()->notifyCursorLeaves(idx());
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return false;
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}
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par()->notifyCursorLeaves(idx());
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Cursor_.pop_back();
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return true;
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}
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bool MathCursor::popRight()
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{
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//lyxerr << "Leaving atom "; par()->write(cerr, false); cerr << " right\n";
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if (depth() <= 1) {
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if (depth() == 1)
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par()->notifyCursorLeaves(idx());
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return false;
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}
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par()->notifyCursorLeaves(idx());
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Cursor_.pop_back();
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posRight();
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return true;
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}
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#if FILEDEBUG
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void MathCursor::dump(char const * what) const
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{
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lyxerr << "MC: " << what << endl;
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lyxerr << " Cursor: " << depth() << endl;
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for (unsigned i = 0; i < depth(); ++i)
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lyxerr << " i: " << i << ' ' << Cursor_[i] << endl;
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lyxerr << " Anchor: " << Anchor_.size() << endl;
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for (unsigned i = 0; i < Anchor_.size(); ++i)
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lyxerr << " i: " << i << ' ' << Anchor_[i] << endl;
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lyxerr << " sel: " << selection_ << endl;
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}
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#else
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void MathCursor::dump(char const *) const {}
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#endif
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bool MathCursor::isInside(MathInset const * p) const
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{
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for (unsigned i = 0; i < depth(); ++i)
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if (Cursor_[i].par_ == p)
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return true;
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return false;
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}
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bool MathCursor::openable(MathAtom const & t, bool sel) const
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{
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if (!t->isActive())
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return false;
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if (t->lock())
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return false;
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if (sel) {
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// we can't move into anything new during selection
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if (depth() == Anchor_.size())
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return false;
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if (t.operator->() != Anchor_[depth()].par_)
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return false;
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}
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return true;
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}
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bool MathCursor::inNucleus() const
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{
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return par()->asScriptInset() && idx() == 2;
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}
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bool MathCursor::posLeft()
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{
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if (pos() == 0)
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return false;
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--pos();
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return true;
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}
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bool MathCursor::posRight()
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{
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if (pos() == size())
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return false;
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++pos();
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return true;
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}
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bool MathCursor::left(bool sel)
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{
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dump("Left 1");
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autocorrect_ = false;
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targetx_ = -1; // "no target"
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if (inMacroMode()) {
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macroModeClose();
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return true;
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}
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selHandle(sel);
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if (hasPrevAtom() && openable(prevAtom(), sel)) {
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pushRight(prevAtom());
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return true;
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}
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return posLeft() || idxLeft() || popLeft() || selection_;
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}
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bool MathCursor::right(bool sel)
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{
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dump("Right 1");
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autocorrect_ = false;
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targetx_ = -1; // "no target"
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if (inMacroMode()) {
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macroModeClose();
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return true;
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}
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selHandle(sel);
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if (hasNextAtom() && openable(nextAtom(), sel)) {
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pushLeft(nextAtom());
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return true;
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}
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return posRight() || idxRight() || popRight() || selection_;
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}
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void MathCursor::first()
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{
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Cursor_.clear();
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push(formula_->par());
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par()->idxFirst(idx(), pos());
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}
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void MathCursor::last()
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{
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Cursor_.clear();
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push(formula_->par());
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par()->idxLast(idx(), pos());
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}
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bool positionable
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(MathIterator const & cursor, MathIterator const & anchor)
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{
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// avoid deeper nested insets when selecting
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if (cursor.size() > anchor.size())
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return false;
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// anchor might be deeper, should have same path then
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for (MathIterator::size_type i = 0; i < cursor.size(); ++i)
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if (cursor[i].par_ != anchor[i].par_)
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return false;
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// position should be ok.
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return true;
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}
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void MathCursor::setPos(int x, int y)
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{
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dump("setPos 1");
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bool res = bruteFind(x, y,
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formula()->xlow(), formula()->xhigh(),
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formula()->ylow(), formula()->yhigh());
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if (!res) {
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// this can happen on creation of "math-display"
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dump("setPos 1.5");
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first();
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}
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targetx_ = -1; // "no target"
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dump("setPos 2");
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}
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bool MathCursor::home(bool sel)
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{
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dump("home 1");
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autocorrect_ = false;
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selHandle(sel);
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macroModeClose();
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if (!par()->idxHome(idx(), pos()))
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return popLeft();
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dump("home 2");
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targetx_ = -1; // "no target"
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return true;
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}
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bool MathCursor::end(bool sel)
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{
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dump("end 1");
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autocorrect_ = false;
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selHandle(sel);
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macroModeClose();
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if (!par()->idxEnd(idx(), pos()))
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return popRight();
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dump("end 2");
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targetx_ = -1; // "no target"
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return true;
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}
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void MathCursor::plainErase()
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{
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array().erase(pos());
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}
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void MathCursor::markInsert()
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{
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//lyxerr << "inserting mark\n";
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array().insert(pos(), MathAtom(new MathCharInset(0)));
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}
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void MathCursor::markErase()
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{
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//lyxerr << "deleting mark\n";
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array().erase(pos());
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}
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void MathCursor::plainInsert(MathAtom const & t)
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{
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dump("plainInsert");
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array().insert(pos(), t);
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++pos();
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}
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void MathCursor::insert2(string const & str)
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{
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MathArray ar;
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asArray(str, ar);
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insert(ar);
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}
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void MathCursor::insert(string const & str)
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{
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//lyxerr << "inserting '" << str << "'\n";
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selClearOrDel();
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for (string::const_iterator it = str.begin(); it != str.end(); ++it)
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plainInsert(MathAtom(new MathCharInset(*it)));
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}
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void MathCursor::insert(char c)
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{
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//lyxerr << "inserting '" << c << "'\n";
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selClearOrDel();
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plainInsert(MathAtom(new MathCharInset(c)));
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}
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void MathCursor::insert(MathAtom const & t)
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{
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macroModeClose();
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selClearOrDel();
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plainInsert(t);
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}
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void MathCursor::niceInsert(string const & t)
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{
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MathArray ar;
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asArray(t, ar);
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if (ar.size() == 1)
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niceInsert(ar[0]);
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else
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insert(ar);
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}
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void MathCursor::niceInsert(MathAtom const & t)
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{
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macroModeClose();
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string safe = grabAndEraseSelection();
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plainInsert(t);
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// enter the new inset and move the contents of the selection if possible
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if (t->isActive()) {
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posLeft();
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pushLeft(nextAtom());
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paste(safe);
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}
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}
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void MathCursor::insert(MathArray const & ar)
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{
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macroModeClose();
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if (selection_)
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eraseSelection();
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array().insert(pos(), ar);
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pos() += ar.size();
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}
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void MathCursor::paste(string const & data)
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{
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dispatch(FuncRequest(LFUN_PASTE, data));
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}
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bool MathCursor::backspace()
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{
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autocorrect_ = false;
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if (selection_) {
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selDel();
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return true;
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}
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if (pos() == 0) {
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if (par()->ncols() == 1 &&
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par()->nrows() == 1 &&
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depth() == 1 &&
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size() == 0)
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return false;
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pullArg();
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return true;
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}
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if (inMacroMode()) {
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MathUnknownInset * p = activeMacro();
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if (p->name().size() > 1) {
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p->setName(p->name().substr(0, p->name().size() - 1));
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return true;
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}
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}
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--pos();
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plainErase();
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return true;
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}
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bool MathCursor::erase()
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{
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autocorrect_ = false;
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if (inMacroMode())
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return true;
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if (selection_) {
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selDel();
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return true;
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}
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// delete empty cells if possible
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if (array().empty())
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if (par()->idxDelete(idx()))
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return true;
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// old behaviour when in last position of cell
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if (pos() == size()) {
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if (par()->ncols() == 1 && par()->nrows() == 1 && depth() == 1 && size() == 0)
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return false;
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else{
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par()->idxGlue(idx());
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return true;
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}
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}
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plainErase();
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return true;
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}
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bool MathCursor::up(bool sel)
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{
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dump("up 1");
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macroModeClose();
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selHandle(sel);
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MathIterator save = Cursor_;
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if (goUpDown(true))
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return true;
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Cursor_ = save;
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autocorrect_ = false;
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return selection_;
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}
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bool MathCursor::down(bool sel)
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{
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dump("down 1");
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macroModeClose();
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selHandle(sel);
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MathIterator save = Cursor_;
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if (goUpDown(false))
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return true;
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Cursor_ = save;
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autocorrect_ = false;
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return selection_;
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}
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void MathCursor::macroModeClose()
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{
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if (!inMacroMode())
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return;
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MathUnknownInset * p = activeMacro();
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p->finalize();
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string s = p->name();
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--pos();
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array().erase(pos());
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// do nothing if the macro name is empty
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if (s == "\\")
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return;
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string name = s.substr(1);
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// prevent entering of recursive macros
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if (formula()->lyxCode() == Inset::MATHMACRO_CODE
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&& formula()->getInsetName() == name)
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lyxerr << "can't enter recursive macro\n";
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niceInsert(createMathInset(name));
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}
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string MathCursor::macroName() const
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{
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return inMacroMode() ? activeMacro()->name() : string();
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}
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void MathCursor::selClear()
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{
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Anchor_.clear();
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selection_ = false;
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}
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void MathCursor::selCopy()
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{
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dump("selCopy");
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if (selection_) {
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theCutBuffer.push(grabSelection());
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selection_ = false;
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} else {
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//theCutBuffer.erase();
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}
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}
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void MathCursor::selCut()
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{
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dump("selCut");
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theCutBuffer.push(grabAndEraseSelection());
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}
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void MathCursor::selDel()
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{
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dump("selDel");
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if (selection_) {
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eraseSelection();
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selection_ = false;
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}
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}
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void MathCursor::selPaste(int n)
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{
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dump("selPaste");
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selClearOrDel();
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if (n < theCutBuffer.size())
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paste(theCutBuffer[n]);
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//grabSelection();
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selection_ = false;
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}
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void MathCursor::selHandle(bool sel)
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{
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if (sel == selection_)
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return;
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//clear();
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Anchor_ = Cursor_;
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selection_ = sel;
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}
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void MathCursor::selStart()
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{
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dump("selStart 1");
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//clear();
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Anchor_ = Cursor_;
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selection_ = true;
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dump("selStart 2");
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}
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void MathCursor::selClearOrDel()
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{
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if (lyxrc.auto_region_delete)
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selDel();
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else
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selection_ = false;
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}
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void MathCursor::drawSelection(PainterInfo & pi) const
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{
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if (!selection_)
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return;
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MathCursorPos i1;
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MathCursorPos i2;
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getSelection(i1, i2);
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i1.par_->drawSelection(pi, i1.idx_, i1.pos_, i2.idx_, i2.pos_);
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}
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void MathCursor::handleNest(MathAtom const & a)
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{
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MathAtom at = a;
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asArray(grabAndEraseSelection(), at.nucleus()->cell(0));
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insert(at);
|
|
pushRight(prevAtom());
|
|
}
|
|
|
|
|
|
void MathCursor::getPos(int & x, int & y) const
|
|
{
|
|
par()->getPos(idx(), pos(), x, y);
|
|
}
|
|
|
|
|
|
int MathCursor::targetX() const
|
|
{
|
|
if (targetx_ != -1)
|
|
return targetx_;
|
|
int x = 0, y = 0;
|
|
getPos(x, y);
|
|
return x;
|
|
}
|
|
|
|
|
|
MathInset * MathCursor::par() const
|
|
{
|
|
return cursor().par_;
|
|
}
|
|
|
|
|
|
InsetFormulaBase * MathCursor::formula() const
|
|
{
|
|
return formula_;
|
|
}
|
|
|
|
|
|
MathCursor::idx_type MathCursor::idx() const
|
|
{
|
|
return cursor().idx_;
|
|
}
|
|
|
|
|
|
MathCursor::idx_type & MathCursor::idx()
|
|
{
|
|
return cursor().idx_;
|
|
}
|
|
|
|
|
|
MathCursor::pos_type MathCursor::pos() const
|
|
{
|
|
return cursor().pos_;
|
|
}
|
|
|
|
|
|
void MathCursor::adjust(pos_type from, difference_type diff)
|
|
{
|
|
if (cursor().pos_ > from)
|
|
cursor().pos_ += diff;
|
|
if (Anchor_.back().pos_ > from)
|
|
Anchor_.back().pos_ += diff;
|
|
// just to be on the safe side
|
|
// theoretically unecessary
|
|
normalize();
|
|
}
|
|
|
|
|
|
MathCursor::pos_type & MathCursor::pos()
|
|
{
|
|
return cursor().pos_;
|
|
}
|
|
|
|
|
|
bool MathCursor::inMacroMode() const
|
|
{
|
|
if (!hasPrevAtom())
|
|
return false;
|
|
MathUnknownInset const * p = prevAtom()->asUnknownInset();
|
|
return p && !p->final();
|
|
}
|
|
|
|
|
|
MathUnknownInset * MathCursor::activeMacro()
|
|
{
|
|
return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
|
|
}
|
|
|
|
|
|
MathUnknownInset const * MathCursor::activeMacro() const
|
|
{
|
|
return inMacroMode() ? prevAtom()->asUnknownInset() : 0;
|
|
}
|
|
|
|
|
|
bool MathCursor::inMacroArgMode() const
|
|
{
|
|
return pos() > 0 && prevAtom()->getChar() == '#';
|
|
}
|
|
|
|
|
|
bool MathCursor::selection() const
|
|
{
|
|
return selection_;
|
|
}
|
|
|
|
|
|
MathGridInset * MathCursor::enclosingGrid(MathCursor::idx_type & idx) const
|
|
{
|
|
for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
|
|
MathGridInset * p = Cursor_[i].par_->asGridInset();
|
|
if (p) {
|
|
idx = Cursor_[i].idx_;
|
|
return p;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
void MathCursor::popToHere(MathInset const * p)
|
|
{
|
|
while (depth() && Cursor_.back().par_ != p)
|
|
Cursor_.pop_back();
|
|
}
|
|
|
|
|
|
void MathCursor::popToEnclosingGrid()
|
|
{
|
|
while (depth() && !Cursor_.back().par_->asGridInset())
|
|
Cursor_.pop_back();
|
|
}
|
|
|
|
|
|
void MathCursor::popToEnclosingHull()
|
|
{
|
|
while (depth() && !Cursor_.back().par_->asHullInset())
|
|
Cursor_.pop_back();
|
|
}
|
|
|
|
|
|
void MathCursor::pullArg()
|
|
{
|
|
dump("pullarg");
|
|
MathArray a = array();
|
|
if (popLeft()) {
|
|
plainErase();
|
|
array().insert(pos(), a);
|
|
Anchor_ = Cursor_;
|
|
} else {
|
|
formula()->mutateToText();
|
|
}
|
|
}
|
|
|
|
|
|
void MathCursor::touch()
|
|
{
|
|
MathIterator::const_iterator it = Cursor_.begin();
|
|
MathIterator::const_iterator et = Cursor_.end();
|
|
for ( ; it != et; ++it)
|
|
it->cell().touch();
|
|
}
|
|
|
|
|
|
void MathCursor::normalize()
|
|
{
|
|
if (idx() >= par()->nargs()) {
|
|
lyxerr << "this should not really happen - 1: "
|
|
<< idx() << ' ' << par()->nargs()
|
|
<< " in: " << par() << endl;
|
|
dump("error 2");
|
|
}
|
|
idx() = min(idx(), par()->nargs() - 1);
|
|
|
|
if (pos() > size()) {
|
|
lyxerr << "this should not really happen - 2: "
|
|
<< pos() << ' ' << size() << " in idx: " << idx()
|
|
<< " in atom: '";
|
|
WriteStream wi(lyxerr, false, true);
|
|
par()->write(wi);
|
|
lyxerr << endl;
|
|
dump("error 4");
|
|
}
|
|
pos() = min(pos(), size());
|
|
}
|
|
|
|
|
|
MathCursor::size_type MathCursor::size() const
|
|
{
|
|
return array().size();
|
|
}
|
|
|
|
|
|
bool MathCursor::hasPrevAtom() const
|
|
{
|
|
return pos() > 0;
|
|
}
|
|
|
|
|
|
bool MathCursor::hasNextAtom() const
|
|
{
|
|
return pos() < size();
|
|
}
|
|
|
|
|
|
MathAtom const & MathCursor::prevAtom() const
|
|
{
|
|
lyx::Assert(pos() > 0);
|
|
return array()[pos() - 1];
|
|
}
|
|
|
|
|
|
MathAtom & MathCursor::prevAtom()
|
|
{
|
|
lyx::Assert(pos() > 0);
|
|
return array()[pos() - 1];
|
|
}
|
|
|
|
|
|
MathAtom const & MathCursor::nextAtom() const
|
|
{
|
|
lyx::Assert(pos() < size());
|
|
return array()[pos()];
|
|
}
|
|
|
|
|
|
MathAtom & MathCursor::nextAtom()
|
|
{
|
|
lyx::Assert(pos() < size());
|
|
return array()[pos()];
|
|
}
|
|
|
|
|
|
MathArray & MathCursor::array() const
|
|
{
|
|
static MathArray dummy;
|
|
|
|
if (idx() >= par()->nargs()) {
|
|
lyxerr << "############ idx_ " << idx() << " not valid\n";
|
|
return dummy;
|
|
}
|
|
|
|
if (depth() == 0) {
|
|
lyxerr << "############ depth() == 0 not valid\n";
|
|
return dummy;
|
|
}
|
|
|
|
return cursor().cell();
|
|
}
|
|
|
|
|
|
void MathCursor::idxNext()
|
|
{
|
|
par()->idxNext(idx(), pos());
|
|
}
|
|
|
|
|
|
void MathCursor::idxPrev()
|
|
{
|
|
par()->idxPrev(idx(), pos());
|
|
}
|
|
|
|
|
|
char MathCursor::valign() const
|
|
{
|
|
idx_type idx;
|
|
MathGridInset * p = enclosingGrid(idx);
|
|
return p ? p->valign() : '\0';
|
|
}
|
|
|
|
|
|
char MathCursor::halign() const
|
|
{
|
|
idx_type idx;
|
|
MathGridInset * p = enclosingGrid(idx);
|
|
return p ? p->halign(idx % p->ncols()) : '\0';
|
|
}
|
|
|
|
|
|
void MathCursor::getSelection(MathCursorPos & i1, MathCursorPos & i2) const
|
|
{
|
|
MathCursorPos anc = normalAnchor();
|
|
if (anc < cursor()) {
|
|
i1 = anc;
|
|
i2 = cursor();
|
|
} else {
|
|
i1 = cursor();
|
|
i2 = anc;
|
|
}
|
|
}
|
|
|
|
|
|
MathCursorPos & MathCursor::cursor()
|
|
{
|
|
lyx::Assert(depth());
|
|
return Cursor_.back();
|
|
}
|
|
|
|
|
|
MathCursorPos const & MathCursor::cursor() const
|
|
{
|
|
lyx::Assert(depth());
|
|
return Cursor_.back();
|
|
}
|
|
|
|
|
|
bool MathCursor::goUpDown(bool up)
|
|
{
|
|
// Be warned: The 'logic' implemented in this function is highly fragile.
|
|
// A distance of one pixel or a '<' vs '<=' _really_ matters.
|
|
// So fiddle around with it only if you know what you are doing!
|
|
int xo = 0;
|
|
int yo = 0;
|
|
getPos(xo, yo);
|
|
|
|
// check if we had something else in mind, if not, this is the future goal
|
|
if (targetx_ == -1)
|
|
targetx_ = xo;
|
|
else
|
|
xo = targetx_;
|
|
|
|
// try neigbouring script insets
|
|
// try left
|
|
if (hasPrevAtom()) {
|
|
MathScriptInset const * p = prevAtom()->asScriptInset();
|
|
if (p && p->has(up)) {
|
|
--pos();
|
|
push(nextAtom());
|
|
idx() = up; // the superscript has index 1
|
|
pos() = size();
|
|
///lyxerr << "updown: handled by scriptinset to the left\n";
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// try right
|
|
if (hasNextAtom()) {
|
|
MathScriptInset const * p = nextAtom()->asScriptInset();
|
|
if (p && p->has(up)) {
|
|
push(nextAtom());
|
|
idx() = up;
|
|
pos() = 0;
|
|
///lyxerr << "updown: handled by scriptinset to the right\n";
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// try current cell for e.g. text insets
|
|
if (par()->idxUpDown2(idx(), pos(), up, targetx_))
|
|
return true;
|
|
|
|
//xarray().boundingBox(xlow, xhigh, ylow, yhigh);
|
|
//if (up)
|
|
// yhigh = yo - 4;
|
|
//else
|
|
// ylow = yo + 4;
|
|
//if (bruteFind(xo, yo, xlow, xhigh, ylow, yhigh)) {
|
|
// lyxerr << "updown: handled by brute find in the same cell\n";
|
|
// return true;
|
|
//}
|
|
|
|
// try to find an inset that knows better then we
|
|
while (1) {
|
|
///lyxerr << "updown: We are in " << *par() << " idx: " << idx() << '\n';
|
|
// ask inset first
|
|
if (par()->idxUpDown(idx(), pos(), up, targetx_)) {
|
|
// try to find best position within this inset
|
|
if (!selection())
|
|
bruteFind2(xo, yo);
|
|
return true;
|
|
}
|
|
|
|
// no such inset found, just take something "above"
|
|
///lyxerr << "updown: handled by strange case\n";
|
|
if (!popLeft())
|
|
return
|
|
bruteFind(xo, yo,
|
|
formula()->xlow(),
|
|
formula()->xhigh(),
|
|
up ? formula()->ylow() : yo + 4,
|
|
up ? yo - 4 : formula()->yhigh()
|
|
);
|
|
|
|
// any improvement so far?
|
|
int xnew, ynew;
|
|
getPos(xnew, ynew);
|
|
if (up ? ynew < yo : ynew > yo)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
|
|
bool MathCursor::bruteFind
|
|
(int x, int y, int xlow, int xhigh, int ylow, int yhigh)
|
|
{
|
|
MathIterator best_cursor;
|
|
double best_dist = 1e10;
|
|
|
|
MathIterator it = ibegin(formula()->par().nucleus());
|
|
MathIterator et = iend(formula()->par().nucleus());
|
|
while (1) {
|
|
// avoid invalid nesting when selecting
|
|
if (!selection_ || positionable(it, Anchor_)) {
|
|
int xo, yo;
|
|
it.back().getPos(xo, yo);
|
|
if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
|
|
double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
|
|
//lyxerr << "x: " << x << " y: " << y << " d: " << endl;
|
|
// '<=' in order to take the last possible position
|
|
// this is important for clicking behind \sum in e.g. '\sum_i a'
|
|
if (d <= best_dist) {
|
|
best_dist = d;
|
|
best_cursor = it;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (it == et)
|
|
break;
|
|
++it;
|
|
}
|
|
|
|
if (best_dist < 1e10)
|
|
Cursor_ = best_cursor;
|
|
return best_dist < 1e10;
|
|
}
|
|
|
|
|
|
void MathCursor::bruteFind2(int x, int y)
|
|
{
|
|
double best_dist = 1e10;
|
|
|
|
MathIterator it = Cursor_;
|
|
it.back().setPos(0);
|
|
MathIterator et = Cursor_;
|
|
et.back().setPos(it.cell().size());
|
|
for (int i = 0; ; ++i) {
|
|
int xo, yo;
|
|
it.back().getPos(xo, yo);
|
|
double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
|
|
// '<=' in order to take the last possible position
|
|
// this is important for clicking behind \sum in e.g. '\sum_i a'
|
|
lyxerr << "i: " << i << " d: " << d << " best: " << best_dist << endl;
|
|
if (d <= best_dist) {
|
|
best_dist = d;
|
|
Cursor_ = it;
|
|
}
|
|
if (it == et)
|
|
break;
|
|
++it;
|
|
}
|
|
}
|
|
|
|
|
|
bool MathCursor::idxLineLast()
|
|
{
|
|
idx() -= idx() % par()->ncols();
|
|
idx() += par()->ncols() - 1;
|
|
pos() = size();
|
|
return true;
|
|
}
|
|
|
|
bool MathCursor::idxLeft()
|
|
{
|
|
return par()->idxLeft(idx(), pos());
|
|
}
|
|
|
|
|
|
bool MathCursor::idxRight()
|
|
{
|
|
return par()->idxRight(idx(), pos());
|
|
}
|
|
|
|
|
|
bool MathCursor::script(bool up)
|
|
{
|
|
// Hack to get \\^ and \\_ working
|
|
if (inMacroMode() && macroName() == "\\") {
|
|
if (up)
|
|
niceInsert(createMathInset("mathcircumflex"));
|
|
else
|
|
interpret('_');
|
|
return true;
|
|
}
|
|
|
|
macroModeClose();
|
|
string safe = grabAndEraseSelection();
|
|
if (inNucleus()) {
|
|
// we are in a nucleus of a script inset, move to _our_ script
|
|
par()->asScriptInset()->ensure(up);
|
|
idx() = up;
|
|
pos() = 0;
|
|
} else if (hasPrevAtom() && prevAtom()->asScriptInset()) {
|
|
prevAtom().nucleus()->asScriptInset()->ensure(up);
|
|
pushRight(prevAtom());
|
|
idx() = up;
|
|
pos() = size();
|
|
} else if (hasPrevAtom()) {
|
|
--pos();
|
|
array()[pos()] = MathAtom(new MathScriptInset(nextAtom(), up));
|
|
pushLeft(nextAtom());
|
|
idx() = up;
|
|
pos() = 0;
|
|
} else {
|
|
plainInsert(MathAtom(new MathScriptInset(up)));
|
|
prevAtom().nucleus()->asScriptInset()->ensure(up);
|
|
pushRight(prevAtom());
|
|
idx() = up;
|
|
pos() = 0;
|
|
}
|
|
paste(safe);
|
|
dump("1");
|
|
return true;
|
|
}
|
|
|
|
|
|
bool MathCursor::interpret(char c)
|
|
{
|
|
//lyxerr << "interpret 2: '" << c << "'\n";
|
|
targetx_ = -1; // "no target"
|
|
if (inMacroArgMode()) {
|
|
--pos();
|
|
plainErase();
|
|
int n = c - '0';
|
|
MathMacroTemplate const * p = formula()->par()->asMacroTemplate();
|
|
if (p && 1 <= n && n <= p->numargs())
|
|
insert(MathAtom(new MathMacroArgument(c - '0')));
|
|
else {
|
|
insert(createMathInset("#"));
|
|
interpret(c); // try again
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// handle macroMode
|
|
if (inMacroMode()) {
|
|
string name = macroName();
|
|
//lyxerr << "interpret name: '" << name << "'\n";
|
|
|
|
if (isalpha(c)) {
|
|
activeMacro()->setName(activeMacro()->name() + c);
|
|
return true;
|
|
}
|
|
|
|
// handle 'special char' macros
|
|
if (name == "\\") {
|
|
// remove the '\\'
|
|
backspace();
|
|
if (c == '\\') {
|
|
if (currentMode() == MathInset::TEXT_MODE)
|
|
niceInsert(createMathInset("textbackslash"));
|
|
else
|
|
niceInsert(createMathInset("backslash"));
|
|
} else if (c == '{') {
|
|
niceInsert(MathAtom(new MathBraceInset));
|
|
} else {
|
|
niceInsert(createMathInset(string(1, c)));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// leave macro mode and try again if necessary
|
|
macroModeClose();
|
|
if (c == '{')
|
|
niceInsert(MathAtom(new MathBraceInset));
|
|
else if (c != ' ')
|
|
interpret(c);
|
|
return true;
|
|
}
|
|
|
|
// This is annoying as one has to press <space> far too often.
|
|
// Disable it.
|
|
|
|
if (0) {
|
|
// leave autocorrect mode if necessary
|
|
if (autocorrect_ && c == ' ') {
|
|
autocorrect_ = false;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// just clear selection on pressing the space bar
|
|
if (selection_ && c == ' ') {
|
|
selection_ = false;
|
|
return true;
|
|
}
|
|
|
|
selClearOrDel();
|
|
|
|
if (c == '\\') {
|
|
//lyxerr << "starting with macro\n";
|
|
insert(MathAtom(new MathUnknownInset("\\", false)));
|
|
return true;
|
|
}
|
|
|
|
if (c == '\n') {
|
|
if (currentMode() == MathInset::TEXT_MODE)
|
|
insert(c);
|
|
return true;
|
|
}
|
|
|
|
if (c == ' ') {
|
|
if (currentMode() == MathInset::TEXT_MODE) {
|
|
// insert spaces in text mode,
|
|
// but suppress direct insertion of two spaces in a row
|
|
// the still allows typing '<space>a<space>' and deleting the 'a', but
|
|
// it is better than nothing...
|
|
if (!hasPrevAtom() || prevAtom()->getChar() != ' ')
|
|
insert(c);
|
|
return true;
|
|
}
|
|
if (hasPrevAtom() && prevAtom()->asSpaceInset()) {
|
|
prevAtom().nucleus()->asSpaceInset()->incSpace();
|
|
return true;
|
|
}
|
|
if (popRight())
|
|
return true;
|
|
// if are at the very end, leave the formula
|
|
return pos() != size();
|
|
}
|
|
|
|
if (c == '{' || c == '}' || c == '#' || c == '&' || c == '$') {
|
|
createMathInset(string(1, c));
|
|
return true;
|
|
}
|
|
|
|
if (c == '%') {
|
|
niceInsert(MathAtom(new MathCommentInset));
|
|
return true;
|
|
}
|
|
|
|
// try auto-correction
|
|
//if (autocorrect_ && hasPrevAtom() && math_autocorrect(prevAtom(), c))
|
|
// return true;
|
|
|
|
// no special circumstances, so insert the character without any fuss
|
|
insert(c);
|
|
autocorrect_ = true;
|
|
return true;
|
|
}
|
|
|
|
|
|
void MathCursor::setSelection(MathIterator const & where, size_type n)
|
|
{
|
|
selection_ = true;
|
|
Anchor_ = where;
|
|
Cursor_ = where;
|
|
cursor().pos_ += n;
|
|
}
|
|
|
|
|
|
void MathCursor::insetToggle()
|
|
{
|
|
if (hasNextAtom()) {
|
|
// toggle previous inset ...
|
|
nextAtom().nucleus()->lock(!nextAtom()->lock());
|
|
} else if (popLeft() && hasNextAtom()) {
|
|
// ... or enclosing inset if we are in the last inset position
|
|
nextAtom().nucleus()->lock(!nextAtom()->lock());
|
|
posRight();
|
|
}
|
|
}
|
|
|
|
|
|
string MathCursor::info() const
|
|
{
|
|
ostringstream os;
|
|
os << "Math editor mode. ";
|
|
for (int i = 0, n = depth(); i < n; ++i) {
|
|
Cursor_[i].par_->infoize(os);
|
|
os << " ";
|
|
}
|
|
if (hasPrevAtom())
|
|
prevAtom()->infoize2(os);
|
|
os << " ";
|
|
return STRCONV(os.str());
|
|
}
|
|
|
|
|
|
unsigned MathCursor::depth() const
|
|
{
|
|
return Cursor_.size();
|
|
}
|
|
|
|
|
|
|
|
|
|
namespace {
|
|
|
|
void region(MathCursorPos const & i1, MathCursorPos const & i2,
|
|
MathInset::row_type & r1, MathInset::row_type & r2,
|
|
MathInset::col_type & c1, MathInset::col_type & c2)
|
|
{
|
|
MathInset * p = i1.par_;
|
|
c1 = p->col(i1.idx_);
|
|
c2 = p->col(i2.idx_);
|
|
if (c1 > c2)
|
|
swap(c1, c2);
|
|
r1 = p->row(i1.idx_);
|
|
r2 = p->row(i2.idx_);
|
|
if (r1 > r2)
|
|
swap(r1, r2);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
string MathCursor::grabSelection() const
|
|
{
|
|
if (!selection_)
|
|
return string();
|
|
|
|
MathCursorPos i1;
|
|
MathCursorPos i2;
|
|
getSelection(i1, i2);
|
|
|
|
if (i1.idx_ == i2.idx_) {
|
|
MathArray::const_iterator it = i1.cell().begin();
|
|
return asString(MathArray(it + i1.pos_, it + i2.pos_));
|
|
}
|
|
|
|
row_type r1, r2;
|
|
col_type c1, c2;
|
|
region(i1, i2, r1, r2, c1, c2);
|
|
|
|
string data;
|
|
for (row_type row = r1; row <= r2; ++row) {
|
|
if (row > r1)
|
|
data += "\\\\";
|
|
for (col_type col = c1; col <= c2; ++col) {
|
|
if (col > c1)
|
|
data += '&';
|
|
data += asString(i1.par_->cell(i1.par_->index(row, col)));
|
|
}
|
|
}
|
|
return data;
|
|
}
|
|
|
|
|
|
void MathCursor::eraseSelection()
|
|
{
|
|
MathCursorPos i1;
|
|
MathCursorPos i2;
|
|
getSelection(i1, i2);
|
|
if (i1.idx_ == i2.idx_)
|
|
i1.cell().erase(i1.pos_, i2.pos_);
|
|
else {
|
|
MathInset * p = i1.par_;
|
|
row_type r1, r2;
|
|
col_type c1, c2;
|
|
region(i1, i2, r1, r2, c1, c2);
|
|
for (row_type row = r1; row <= r2; ++row)
|
|
for (col_type col = c1; col <= c2; ++col)
|
|
p->cell(p->index(row, col)).clear();
|
|
}
|
|
cursor() = i1;
|
|
}
|
|
|
|
|
|
string MathCursor::grabAndEraseSelection()
|
|
{
|
|
if (!selection_)
|
|
return string();
|
|
string res = grabSelection();
|
|
eraseSelection();
|
|
selection_ = false;
|
|
return res;
|
|
}
|
|
|
|
|
|
MathCursorPos MathCursor::normalAnchor() const
|
|
{
|
|
if (Anchor_.size() < depth()) {
|
|
Anchor_ = Cursor_;
|
|
lyxerr << "unusual Anchor size\n";
|
|
}
|
|
//lyx::Assert(Anchor_.size() >= cursor.depth());
|
|
// use Anchor on the same level as Cursor
|
|
MathCursorPos normal = Anchor_[depth() - 1];
|
|
if (depth() < Anchor_.size() && !(normal < cursor())) {
|
|
// anchor is behind cursor -> move anchor behind the inset
|
|
++normal.pos_;
|
|
}
|
|
return normal;
|
|
}
|
|
|
|
|
|
dispatch_result MathCursor::dispatch(FuncRequest const & cmd)
|
|
{
|
|
// mouse clicks are somewhat special
|
|
// check
|
|
switch (cmd.action) {
|
|
case LFUN_MOUSE_PRESS:
|
|
case LFUN_MOUSE_MOTION:
|
|
case LFUN_MOUSE_RELEASE:
|
|
case LFUN_MOUSE_DOUBLE: {
|
|
MathCursorPos & pos = Cursor_.back();
|
|
dispatch_result res = UNDISPATCHED;
|
|
int x = 0, y = 0;
|
|
getPos(x, y);
|
|
if (x < cmd.x && hasPrevAtom()) {
|
|
res = prevAtom().nucleus()->dispatch(cmd, pos.idx_, pos.pos_);
|
|
if (res != UNDISPATCHED)
|
|
return res;
|
|
}
|
|
if (x > cmd.x && hasNextAtom()) {
|
|
res = nextAtom().nucleus()->dispatch(cmd, pos.idx_, pos.pos_);
|
|
if (res != UNDISPATCHED)
|
|
return res;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
for (int i = Cursor_.size() - 1; i >= 0; --i) {
|
|
MathCursorPos & pos = Cursor_[i];
|
|
dispatch_result res = pos.par_->dispatch(cmd, pos.idx_, pos.pos_);
|
|
if (res != UNDISPATCHED) {
|
|
if (res == DISPATCHED_POP) {
|
|
Cursor_.shrink(i + 1);
|
|
selClear();
|
|
}
|
|
return res;
|
|
}
|
|
}
|
|
return UNDISPATCHED;
|
|
}
|
|
|
|
|
|
MathInset::mode_type MathCursor::currentMode() const
|
|
{
|
|
for (int i = Cursor_.size() - 1; i >= 0; --i) {
|
|
MathInset::mode_type res = Cursor_[i].par_->currentMode();
|
|
if (res != MathInset::UNDECIDED_MODE)
|
|
return res;
|
|
}
|
|
return MathInset::UNDECIDED_MODE;
|
|
}
|
|
|
|
|
|
void MathCursor::handleFont(string const & font)
|
|
{
|
|
string safe;
|
|
if (selection()) {
|
|
macroModeClose();
|
|
safe = grabAndEraseSelection();
|
|
}
|
|
|
|
if (array().size()) {
|
|
// something left in the cell
|
|
if (pos() == 0) {
|
|
// cursor in first position
|
|
popLeft();
|
|
} else if (pos() == array().size()) {
|
|
// cursor in last position
|
|
popRight();
|
|
} else {
|
|
// cursor in between. split cell
|
|
MathArray::iterator bt = array().begin();
|
|
MathAtom at = createMathInset(font);
|
|
at.nucleus()->cell(0) = MathArray(bt, bt + pos());
|
|
cursor().cell().erase(bt, bt + pos());
|
|
popLeft();
|
|
plainInsert(at);
|
|
}
|
|
} else {
|
|
// nothing left in the cell
|
|
pullArg();
|
|
plainErase();
|
|
}
|
|
insert(safe);
|
|
}
|
|
|
|
|
|
void releaseMathCursor(BufferView * bv)
|
|
{
|
|
if (mathcursor) {
|
|
InsetFormulaBase * f = mathcursor->formula();
|
|
delete mathcursor;
|
|
mathcursor = 0;
|
|
f->insetUnlock(bv);
|
|
}
|
|
}
|