/*
* File: math_cursor.C
* Purpose: Interaction for mathed
- * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
+ * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
* Created: January 1996
* Description: Math interaction for a WYSIWYG math editor.
*
*
* Copyright: 1996, Alejandro Aguilar Sierra
*
- * Version: 0.8beta, Mathed & Lyx project.
+ * Version: 0.8beta, Math & Lyx project.
*
* You are free to use and modify this code under the terms of
* the GNU General Public Licence version 2 or later.
#ifdef __GNUG__
#pragma implementation
#endif
-
+
#include <config.h>
-#include FORMS_H_LOCATION
-#include "math_inset.h"
-#include "math_parser.h"
-#include "math_cursor.h"
-#include "math_macro.h"
-#include "math_root.h"
+#include <algorithm>
+#include <cctype>
+
#include "support/lstrings.h"
+#include "support/LAssert.h"
#include "debug.h"
#include "LColor.h"
#include "Painter.h"
+#include "support.h"
+#include "formulabase.h"
+#include "math_cursor.h"
+#include "math_factory.h"
+#include "math_arrayinset.h"
+#include "math_charinset.h"
+#include "math_deliminset.h"
+#include "math_matrixinset.h"
+#include "math_scriptinset.h"
+#include "math_spaceinset.h"
+#include "math_specialcharinset.h"
+#include "math_parser.h"
-static LyxArrayBase * selarray = 0;
+#define FILEDEBUG 0
using std::endl;
+using std::min;
+using std::max;
+using std::swap;
+using std::isalnum;
+
+namespace {
+
+struct Selection
+{
+ void grab(MathCursor const & cursor)
+ {
+ data_.clear();
+ MathCursorPos i1;
+ MathCursorPos i2;
+ cursor.getSelection(i1, i2);
+ if (i1.idx_ == i2.idx_)
+ data_.push_back(MathArray(i1.cell(), i1.pos_, i2.pos_));
+ else {
+ std::vector<MathInset::idx_type> indices =
+ (*i1.par_)->idxBetween(i1.idx_, i2.idx_);
+ for (MathInset::idx_type i = 0; i < indices.size(); ++i)
+ data_.push_back(i1.cell(indices[i]));
+ }
+ }
+
+ void erase(MathCursor & cursor)
+ {
+ MathCursorPos i1;
+ MathCursorPos i2;
+ cursor.getSelection(i1, i2);
+ if (i1.idx_ == i2.idx_) {
+ i1.cell().erase(i1.pos_, i2.pos_);
+ } else {
+ std::vector<MathInset::idx_type> indices =
+ (*i1.par_)->idxBetween(i1.idx_, i2.idx_);
+ for (unsigned i = 0; i < indices.size(); ++i)
+ i1.cell(indices[i]).erase();
+ }
+ cursor.cursor() = i1;
+ }
+
+ void paste(MathCursor & cursor) const
+ {
+ MathArray ar = glue();
+ cursor.paste(ar);
+ }
+
+ // glues selection to one cell
+ MathArray glue() const
+ {
+ MathArray ar;
+ for (unsigned i = 0; i < data_.size(); ++i)
+ ar.push_back(data_[i]);
+ return ar;
+ }
+
+ void clear()
+ {
+ data_.clear();
+ }
+
+ std::vector<MathArray> data_;
+};
+
+
+Selection theSelection;
+
+
+#if FILEDEBUG
+std::ostream & operator<<(std::ostream & os, MathCursorPos const & p)
+{
+ os << "(par: " << p.par_ << " idx: " << p.idx_ << " pos: " << p.pos_ << ")";
+ return os;
+}
+#endif
-static inline
-bool IsAlpha(char c)
-{
- return ('A' <= c && c <= 'Z' || 'a' <= c && c <= 'z');
}
-// This was very smaller, I'll change it later
-static inline
-bool IsMacro(short tok, int id)
+
+MathCursor::MathCursor(InsetFormulaBase * formula, bool left)
+ : formula_(formula), lastcode_(LM_TC_VAR), selection_(false)
{
- return (tok != LM_TK_STACK && tok != LM_TK_FRAC && tok != LM_TK_SQRT
- && tok != LM_TK_WIDE
- && tok != LM_TK_SPACE && tok != LM_TK_DOTS
- && tok != LM_TK_FUNCLIM
- && tok != LM_TK_BIGSYM && tok != LM_TK_ACCENT &&
- !(tok == LM_TK_SYM && id < 255));
+ left ? first() : last();
}
-// Yes, mathed isn't using string yet.
-static inline
-char * strnew(char const * s)
+void MathCursor::push(MathAtom & t)
{
- char * s1 = new char[strlen(s)+1];
- strcpy(s1, s);
- return s1;
-}
-
-
-
-static int const MAX_STACK_ITEMS = 32;
-
-
-struct MathStackXIter {
-
- int i, imax;
- MathedXIter * item;
-
- MathStackXIter(int n = MAX_STACK_ITEMS): imax(n) {
- item = new MathedXIter[imax];
- i = 0;
- }
-
- MathStackXIter(MathStackXIter & stk);
-
- ~MathStackXIter() {
- delete[] item;
- }
-
- void push(MathedXIter ** a) {
- *a = &item[i++];
- }
-
- MathedXIter * pop() {
- --i;
- return &item[i - 1];
- }
-
- MathedXIter * Item(int idx) {
- return (idx + 1 <= i) ? &item[i - idx - 1] : 0;
- }
-
- void Reset() {
- i = 0;
- }
-
- bool Full() {
- return i >= MAX_STACK_ITEMS;
- }
-
- bool Empty() {
- return i <= 1;
- }
-
- int Level() { return i; }
-
-} mathstk, *selstk = 0;
-
-
-MathStackXIter::MathStackXIter(MathStackXIter & stk) {
- imax = stk.imax;
- item = new MathedXIter[imax];
- i = stk.i;
- for (int k = 0; k < i; ++k) {
- item[k].SetData(stk.item[k].getPar());
- item[k].GoBegin();
- item[k].goPosAbs(stk.item[k].getPos());
- }
-}
-
-
-/***---------------- Mathed Cursor ---------------------------***/
-
-MathedCursor::MathedCursor(MathParInset * p) // : par(p)
-{
- accent = 0;
- anchor = 0;
- lastcode = LM_TC_MIN;
- SetPar(p);
-// selarray = 0;
- if (!MathMacroTable::built)
- MathMacroTable::mathMTable.builtinMacros();
-}
-
-
-void MathedCursor::SetPar(MathParInset * p)
-{
- win = 0;
- is_visible = False;
- macro_mode = false;
- selection = false; // not SelClear() ?
- mathstk.Reset();
- mathstk.push(&cursor);
- par = p;
- cursor->SetData(par);
-}
-
-
-void MathedCursor::draw(Painter & pain, int x, int y)
-{
- // lyxerr << "Cursor[" << x << " " << y << "] ";
- //win = pm; // win = (mathedCanvas) ? mathedCanvas: pm;
- par->Metrics();
- int w = par->Width() + 2;
- int a = par->Ascent() + 1;
- int h = par->Height() + 1;
- if (par->GetType() > LM_OT_PAR) { a += 4; h += 8; }
-
- pain.rectangle(x - 1, y - a, w, h, LColor::mathframe);
-
- par->draw(pain, x, y);
- cursor->Adjust();
-}
-
-
-void MathedCursor::Redraw(Painter & pain)
-{
- lyxerr[Debug::MATHED] << "Mathed: Redrawing!" << endl;
- par->Metrics();
- int w = par->Width(), h = par->Height();
- int x, y;
- par->GetXY(x, y);
- //mathed_set_font(LM_TC_VAR, 1);
- pain.fillRectangle(x, y - par->Ascent(),
- x + w, y - par->Ascent() + h,
- LColor::mathbg);
- par->draw(pain, x, y);
-}
-
-
-bool MathedCursor::Left(bool sel)
-{
- if (macro_mode) {
- MacroModeBack();
- return true;
- }
- clearLastCode();
- if (sel && !selection) SelStart();
- if (!sel && selection) SelClear();
- bool result = cursor->Prev();
- if (!result && !mathstk.Empty()) {
- cursor = mathstk.pop();
- cursor->Adjust();
- result = true;
- if (selection) SelClear();
- } else
- if (result && cursor->IsActive()) {
- if (cursor->IsScript()) {
- cursor->Prev();
- if (!cursor->IsScript())
- cursor->Next();
- cursor->Adjust();
- return true;
- }
- if (!selection) {
- MathParInset * p = cursor->GetActiveInset();
- if (!p)
- return result;
-
- p->setArgumentIdx(p->getMaxArgumentIdx());
- mathstk.push(&cursor);
- cursor->SetData(p);
- cursor->GoLast();
+ //cerr << "Entering atom "; t->write(cerr, false); cerr << " left\n";
+ MathCursorPos p;
+ p.par_ = &t;
+ Cursor_.push_back(p);
+}
+
+
+void MathCursor::pushLeft(MathAtom & t)
+{
+ //cerr << "Entering atom "; t->write(cerr, false); cerr << " left\n";
+ push(t);
+ t->idxFirst(idx(), pos());
+}
+
+
+void MathCursor::pushRight(MathAtom & t)
+{
+ //cerr << "Entering atom "; t->write(cerr, false); cerr << " right\n";
+ posLeft();
+ push(t);
+ t->idxLast(idx(), pos());
+}
+
+
+bool MathCursor::popLeft()
+{
+ //cerr << "Leaving atom "; par()->write(cerr, false); cerr << " left\n";
+ if (Cursor_.size() <= 1)
+ return false;
+ //if (nextInset())
+ // nextInset()->removeEmptyScripts();
+ Cursor_.pop_back();
+ //if (nextAtom())
+ // nextAtom()->removeEmptyScripts();
+ return true;
+}
+
+
+bool MathCursor::popRight()
+{
+ //cerr << "Leaving atom "; par()->write(cerr, false); cerr << " right\n";
+ if (Cursor_.size() <= 1)
+ return false;
+ //if (nextInset())
+ // nextInset()->removeEmptyScripts();
+ Cursor_.pop_back();
+ //if (nextInset())
+ // nextInset()->removeEmptyScripts();
+ posRight();
+ return true;
+}
+
+
+
+#if FILEDEBUG
+void MathCursor::dump(char const * what) const
+{
+ lyxerr << "MC: " << what << "\n";
+ for (unsigned i = 0; i < Cursor_.size(); ++i)
+ lyxerr << " i: " << i
+ << " Cursor: pos: " << Cursor_[i].pos_
+ << " idx: " << Cursor_[i].idx_
+ << " par: " << Cursor_[i].par_ << "\n";
+
+ for (unsigned i = 0; i < Anchor_.size(); ++i)
+ lyxerr << " i: " << i
+ << " Anchor: pos: " << Anchor_[i].pos_
+ << " idx: " << Anchor_[i].idx_
+ << " par: " << Anchor_[i].par_ << "\n";
+
+ lyxerr << " sel: " << selection_ << "\n";
+}
+
+
+void MathCursor::seldump(char const * str) const
+{
+ //lyxerr << "SEL: " << str << ": '" << theSelection << "'\n";
+ //dump(" Pos");
+
+ lyxerr << "\n\n\n=================vvvvvvvvvvvvv======================= "
+ << str << "\ntheSelection: " << selection_
+ << " '" << theSelection.glue() << "'\n";
+ for (unsigned int i = 0; i < Cursor_.size(); ++i)
+ lyxerr << Cursor_[i].par_ << "\n'" << Cursor_[i].cell() << "'\n";
+ lyxerr << "\n";
+ for (unsigned int i = 0; i < Anchor_.size(); ++i)
+ lyxerr << Anchor_[i].par_ << "\n'" << Anchor_[i].cell() << "'\n";
+ //lyxerr << "\ncursor.pos_: " << pos();
+ //lyxerr << "\nanchor.pos_: " << anchor().pos_;
+ lyxerr << "\n===================^^^^^^^^^^^^=====================\n\n\n";
+}
+
+#else
+
+void MathCursor::seldump(char const *) const {}
+void MathCursor::dump(char const *) const {}
+
+#endif
+
+
+bool MathCursor::isInside(MathInset const * p) const
+{
+ for (unsigned i = 0; i < Cursor_.size(); ++i)
+ if (Cursor_[i].par_->nucleus() == p)
+ return true;
+ return false;
+}
+
+
+bool MathCursor::openable(MathAtom const & t, bool sel) const
+{
+ if (!t->isActive())
+ return false;
+
+ if (t->asScriptInset())
+ return false;
+
+ if (sel) {
+ // we can't move into anything new during selection
+ if (Cursor_.size() == Anchor_.size())
+ return false;
+ if (&t != Anchor_[Cursor_.size()].par_)
+ return false;
}
- }
- return result;
-}
-
-
-// Leave the inset
-bool MathedCursor::Pop()
-{
- if (!mathstk.Empty()) {
- cursor = mathstk.pop();
- cursor->Next();
- return true;
- }
- return false;
-}
-
-
-// Go to the inset
-bool MathedCursor::Push()
-{
- if (cursor->IsActive()) {
- MathParInset * p = cursor->GetActiveInset();
- if (!p) return false;
- mathstk.push(&cursor);
- cursor->SetData(p);
- return true;
- }
- return false;
-}
-
-
-bool MathedCursor::Right(bool sel)
-{
- if (macro_mode) {
- MacroModeClose();
- return true;
- }
- clearLastCode();
- if (sel && !selection) SelStart();
- if (!sel && selection) SelClear();
- bool result = false;
-
- if (cursor->IsActive()) {
- if (cursor->IsScript()) {
- cursor->Next();
- // A script may be followed by another script
- if (cursor->IsScript())
- cursor->Next();
- return true;
- }
- if (!selection) {
- MathParInset *p = cursor->GetActiveInset();
- if (!p) {
- lyxerr << "Math error: Inset expected." << endl;
- return cursor->Next();
- }
- p->setArgumentIdx(0);
- mathstk.push(&cursor);
- cursor->SetData(p);
- result = true;
- } else
- result = cursor->Next();
- } else {
- if (cursor->GetChar()!= LM_TC_CR)
- result = cursor->Next();
- if (!result && !mathstk.Empty()) {
- cursor = mathstk.pop();
- cursor->Next();
- cursor->Adjust();
- result = true;
- if (selection) SelClear();
- }
- }
- return result;
-}
-
-
-void MathedCursor::SetPos(int x, int y)
-{
- int xp = 0;
-
- if (macro_mode) MacroModeClose();
- lastcode = LM_TC_MIN;
- mathstk.Reset();
- mathstk.push(&cursor);
- cursor->SetData(par);
- cursor->fitCoord(x, y);
- while (cursor->GetX()<x && cursor->OK()) {
- if (cursor->IsActive()) {
- MathParInset * p = cursor->GetActiveInset();
- if (p->Inside(x, y)) {
- p->SetFocus(x, y);
- mathstk.push(&cursor);
- cursor->SetData(p);
- cursor->fitCoord(x, y);
- continue;
- }
+ return true;
+}
+
+
+bool MathCursor::positionable(MathAtom const & t, int x, int y) const
+{
+ if (selection_) {
+ // we can't move into anything new during selection
+ if (Cursor_.size() == Anchor_.size())
+ return 0;
+ //if (t != Anchor_[Cursor_.size()].par_)
+ // return 0;
}
- xp = cursor->GetX();
- cursor->ipush();
- if (!cursor->Next() && !Pop())
- break;
- }
- if (x-xp < cursor->GetX()-x) cursor->ipop();
- cursor->Adjust();
+
+ return t->nargs() && t->covers(x, y);
}
-
-void MathedCursor::Home()
+
+bool MathCursor::posLeft()
{
- if (macro_mode) MacroModeClose();
- clearLastCode();
- mathstk.Reset();
- mathstk.push(&cursor);
- cursor->GoBegin();
+ if (pos() == 0)
+ return false;
+
+ --pos();
+
+ return true;
}
-void MathedCursor::End()
+bool MathCursor::posRight()
{
- if (macro_mode) MacroModeClose();
- clearLastCode();
- mathstk.Reset();
- mathstk.push(&cursor);
- cursor->GoLast();
+ if (pos() == size())
+ return false;
+
+ ++pos();
+
+ return true;
}
-void MathedCursor::Insert(byte c, MathedTextCodes t)
-{
- if (selection) SelDel();
-
- if (t == LM_TC_MIN)
- t = lastcode;
-
- if (macro_mode && !(MathIsAlphaFont(t) || t == LM_TC_MIN))
- MacroModeClose();
+bool MathCursor::left(bool sel)
+{
+ dump("Left 1");
+ if (inMacroMode()) {
+ macroModeClose();
+ lastcode_ = LM_TC_VAR;
+ return true;
+ }
+ selHandle(sel);
+ lastcode_ = LM_TC_VAR;
+
+ if (hasPrevAtom() && openable(prevAtom(), sel)) {
+ pushRight(prevAtom());
+ return true;
+ }
- if (t == LM_TC_CR) {
- MathParInset * p = cursor->p;
- if (p == par && p->GetType()<LM_OT_MPAR && p->GetType()>LM_OT_MIN) {
- MathMatrixInset * mt = new MathMatrixInset(3, 0);
- mt->SetAlign(' ', "rcl");
- mt->SetStyle(LM_ST_DISPLAY);
- mt->SetType((p->GetType() == LM_OT_PARN) ? LM_OT_MPARN: LM_OT_MPAR);
- mt->SetData(p->GetData());
- p->SetData(0);//BUG duda
- delete p;
- par = mt;
- p = mt;
- p->Metrics();
- int pos = cursor->getPos();
- cursor->SetData(par);
- cursor->goPosAbs(pos);
- }
- if (p && p->Permit(LMPF_ALLOW_CR)) {
- cursor->addRow();
- }
- } else
- if (t == LM_TC_TAB) {
- MathParInset * p = cursor->p;
- if (p && p->Permit(LMPF_ALLOW_TAB)) {
- if (c) {
- cursor->Insert(c, t);
- cursor->checkTabs();
- } else
- cursor->goNextColumn();
- } else // Navigate between arguments
- if (p && p->GetType() == LM_OT_MACRO) {
- if (p->getArgumentIdx() < p->getMaxArgumentIdx()) {
- p->setArgumentIdx(p->getArgumentIdx()+1);
- cursor->SetData(p);
- return;
- }
- }
- } else {
- if (macro_mode) {
- if (MathIsAlphaFont(t) || t == LM_TC_MIN) {
- MacroModeInsert(c);
- return;
- }
- }
- if (accent) {
- doAccent(c, t);
- } else
- cursor->Insert(c, t);
- lastcode = t;
-
- return;
- }
- clearLastCode();
-}
-
-
-void MathedCursor::Insert(MathedInset * p, int t)
-{
- if (macro_mode) MacroModeClose();
- if (selection) {
- if (MathIsActive(t)) {
- SelCut();
- static_cast<MathParInset*>(p)->SetData(selarray);
- } else
- SelDel();
- }
-
- if (mathstk.i < MAX_STACK_ITEMS - 1) {
-
- if (accent && !MathIsActive(t)) {
- doAccent(p);
- } else {
- cursor->Insert(p, t);
-
- if (MathIsActive(t)) {
- cursor->Prev();
- Push();
- }
- }
-
- } else
- lyxerr << "Math error: Full stack." << endl;
-}
-
-
-void MathedCursor::Delete()
-{
- if (macro_mode) return;
- if (selection) {
- SelDel();
- return;
- }
- if (cursor->Empty() && !mathstk.Empty()) {
- cursor = mathstk.pop();
- }
-// if (cursor->GetChar()!= LM_TC_TAB)
- cursor->Delete();
- cursor->checkTabs();
-}
-
-
-void MathedCursor::DelLine()
-{
- if (macro_mode) MacroModeClose();
- if (selection) {
- SelDel();
- return;
- }
- MathParInset *p= cursor->p;
- if (p && (p->GetType()<= LM_OT_MATRIX && p->GetType()>= LM_OT_MPAR)) {
- cursor->delRow();
- }
-}
-
-
-bool MathedCursor::Up(bool sel)
-{
- bool result = false;
-
- if (macro_mode) MacroModeClose();
-
- if (sel && !selection) SelStart();
- if (!sel && selection) SelClear();
-
-
- if (cursor->IsScript()) {
- char cd = cursor->GetChar();
- if (MathIsUp(cd)) {
- Push();
- return true;
- } else {
- // A subscript may be followed by a superscript
- cursor->ipush();
- cursor->Next();
- if (MathIsUp(cursor->GetChar())) {
- Push();
+ return posLeft() || idxLeft() || popLeft();
+}
+
+
+bool MathCursor::right(bool sel)
+{
+ dump("Right 1");
+ if (inMacroMode()) {
+ macroModeClose();
+ lastcode_ = LM_TC_VAR;
return true;
- } else // return to the previous state
- cursor->ipop();
- }
- }
-
- result = cursor->Up();
- if (!result && cursor->p) {
- MathParInset * p = cursor->p;
-
- if (p->GetType() == LM_OT_SCRIPT) {
- MathedXIter * cx = mathstk.Item(1);
- bool is_down = (cx->GetChar() == LM_TC_DOWN);
- cursor = mathstk.pop();
- cursor->Next();
- result = (is_down) ? true: Up();
- } else {
- result = (p->getArgumentIdx() > 0);
- if (result) {
- p->setArgumentIdx(p->getArgumentIdx()-1);
- cursor->SetData(p);
- }
}
- if (!result && !mathstk.Empty()) {
- cursor = mathstk.pop();
- return Up();
- }
- }
- return result;
-}
-
-
-bool MathedCursor::Down(bool sel)
-{
- bool result = false;
-
- if (macro_mode) MacroModeClose();
-
- if (sel && !selection) SelStart();
- if (!sel && selection) SelClear();
-// if (selection) SelClear();
-
- if (cursor->IsScript()) {
- char cd = cursor->GetChar();
- if (MathIsDown(cd)) {
- Push();
- return true;
- } else {
- // A superscript may be followed by a subscript
- cursor->ipush();
- cursor->Next();
- if (MathIsDown(cursor->GetChar())) {
- Push();
+ selHandle(sel);
+ lastcode_ = LM_TC_VAR;
+
+ if (hasNextAtom() && openable(nextAtom(), sel)) {
+ pushLeft(nextAtom());
return true;
- } else
- cursor->ipop();
- }
- }
-
- result = cursor->Down();
- if (!result && cursor->p) {
- MathParInset * p= cursor->p;
- if (p->GetType() == LM_OT_SCRIPT) {
- MathedXIter * cx = mathstk.Item(1);
- bool is_up = (cx->GetChar() == LM_TC_UP);
- cursor = mathstk.pop();
- cursor->Next();
- result = (is_up) ? true: Down();
- } else {
- result = (p->getArgumentIdx() < p->getMaxArgumentIdx());
- if (result) {
- p->setArgumentIdx(p->getArgumentIdx()+1);
- cursor->SetData(p);
- }
}
- if (!result && !mathstk.Empty()) {
- cursor = mathstk.pop();
- return Down(sel);
- }
- }
- return result;
+
+ return posRight() || idxRight() || popRight();
+}
+
+
+void MathCursor::first()
+{
+ Cursor_.clear();
+ pushLeft(formula_->par());
+}
+
+
+void MathCursor::last()
+{
+ first();
+ end();
+}
+
+
+void MathCursor::setPos(int x, int y)
+{
+ //dump("setPos 1");
+ //lyxerr << "MathCursor::setPos x: " << x << " y: " << y << "\n";
+
+ macroModeClose();
+ lastcode_ = LM_TC_VAR;
+ first();
+
+ cursor().par_ = &formula_->par();
+
+ while (1) {
+ idx() = 0;
+ cursor().pos_ = 0;
+ //lyxerr << "found idx: " << idx() << " cursor: " << pos() << "\n";
+ int distmin = 1 << 30; // large enough
+ for (unsigned int i = 0; i < par()->nargs(); ++i) {
+ MathXArray const & ar = par()->xcell(i);
+ int x1 = x - ar.xo();
+ int y1 = y - ar.yo();
+ MathXArray::size_type c = ar.x2pos(x1);
+ int xx = abs(x1 - ar.pos2x(c));
+ int yy = abs(y1);
+ //lyxerr << "idx: " << i << " xx: " << xx << " yy: " << yy
+ // << " c: " << c << " xo: " << ar.xo() << "\n";
+ if (yy + xx <= distmin) {
+ distmin = yy + xx;
+ idx() = i;
+ pos() = c;
+ }
+ }
+ //lyxerr << "found idx: " << idx() << " cursor: "
+ // << pos() << "\n";
+ if (hasNextAtom() && positionable(nextAtom(), x, y))
+ pushLeft(nextAtom());
+ else if (hasPrevAtom() && positionable(prevAtom(), x, y))
+ pushRight(prevAtom());
+ else
+ break;
+ }
+ //dump("setPos 2");
+}
+
+
+void MathCursor::home(bool sel)
+{
+ dump("home 1");
+ selHandle(sel);
+ macroModeClose();
+ lastcode_ = LM_TC_VAR;
+ if (!par()->idxHome(idx(), pos()))
+ popLeft();
+ dump("home 2");
+}
+
+
+void MathCursor::end(bool sel)
+{
+ dump("end 1");
+ selHandle(sel);
+ macroModeClose();
+ lastcode_ = LM_TC_VAR;
+ if (!par()->idxEnd(idx(), pos()))
+ popRight();
+ dump("end 2");
+}
+
+
+void MathCursor::plainErase()
+{
+ array().erase(pos());
+}
+
+
+void MathCursor::plainInsert(MathAtom const & t)
+{
+ array().insert(pos(), t);
+ ++pos();
+}
+
+
+void MathCursor::insert(char c, MathTextCodes t)
+{
+ //lyxerr << "inserting '" << c << "'\n";
+ plainInsert(MathAtom(new MathCharInset(c, t)));
+}
+
+
+void MathCursor::insert(MathAtom const & t)
+{
+ macroModeClose();
+
+ if (selection_) {
+ if (t->nargs())
+ selCut();
+ else
+ selDel();
+ }
+
+ plainInsert(t);
}
-bool MathedCursor::Limits()
+void MathCursor::niceInsert(MathAtom const & t)
{
- if (cursor->IsInset()) {
- MathedInset * p = cursor->GetInset();
- bool ol = p->GetLimits();
- p->SetLimits(!ol);
- return (ol!= p->GetLimits());
- }
- return false;
+ selCut();
+ insert(t); // inserting invalidates the pointer!
+ MathAtom const & p = prevAtom();
+ if (p->nargs()) {
+ posLeft();
+ right(); // do not push for e.g. MathSymbolInset
+ selPaste();
+ }
+ p->metrics(p->size());
}
-void MathedCursor::SetSize(short size)
+void MathCursor::insert(MathArray const & ar)
{
- MathParInset * p = cursor->p;
- p->UserSetSize(size);
- cursor->SetData(p);
+ macroModeClose();
+ if (selection_)
+ selCut();
+
+ array().insert(pos(), ar);
+ pos() += ar.size();
}
-void MathedCursor::setLabel(string const & label)
-{ // ugly hack and possible bug
- if (!cursor->setLabel(label))
- lyxerr << "MathErr: Bad place to set labels." << endl;
+void MathCursor::paste(MathArray const & ar)
+{
+ Anchor_ = Cursor_;
+ selection_ = true;
+ array().insert(pos(), ar);
+ pos() += ar.size();
}
-void MathedCursor::setNumbered()
-{ // another ugly hack
- MathedRowSt * crow = cursor->crow;
- if (!crow) return;
- crow->setNumbered(!crow->isNumbered());
+void MathCursor::backspace()
+{
+ if (pos() == 0) {
+ pullArg(false);
+ return;
+ }
+
+ if (selection_) {
+ selDel();
+ return;
+ }
+
+ MathScriptInset * p = prevAtom()->asScriptInset();
+ if (p) {
+ p->removeScript(p->hasUp());
+ // Don't delete if there is anything left
+ if (p->hasUp() || p->hasDown())
+ return;
+ }
+
+ --pos();
+ plainErase();
}
-void MathedCursor::Interpret(string const & s)
+void MathCursor::erase()
{
- MathedInset * p = 0;
- latexkeys * l = 0;
- MathedTextCodes tcode = LM_TC_INSET;
-
- if (s[0] == '^' || s[0] == '_') {
- char c = cursor->GetChar();
- if (MathIsUp(c) && s[0] == '^' || MathIsDown(c) && s[0] == '_') {
- Push();
- return;
- } else // A script may be followed by a script
- if (MathIsUp(c) || MathIsDown(c)) {
- cursor->ipush();
- cursor->Next();
- c = cursor->GetChar();
- if (MathIsUp(c) && s[0] == '^' || MathIsDown(c) && s[0] == '_') {
- Push();
+ if (inMacroMode())
+ return;
+
+ if (selection_) {
+ selDel();
return;
- } else
- cursor->ipop();
}
- p = new MathParInset(LM_ST_SCRIPT, "", LM_OT_SCRIPT);
- Insert (p, (s[0] == '_') ? LM_TC_DOWN: LM_TC_UP);
- return;
- } else
- if (s[0] == '!' || s[0] == ',' || s[0] == ':' || s[0] == ';') {
- int sp = ((s[0] == ',') ? 1:((s[0] == ':') ? 2:((s[0] == ';') ? 3: 0)));
- p = new MathSpaceInset(sp);
- Insert(p);
- return;
- } else
- l = in_word_set(s);
-
- if (!l) {
- p = MathMacroTable::mathMTable.getMacro(s);
- if (!p) {
- lyxerr[Debug::MATHED] << "Macro2 " << s << ' ' << tcode << endl;
- if (s == "root") {
- p = new MathRootInset();
- tcode = LM_TC_ACTIVE_INSET;
- } else
- p = new MathFuncInset(s, LM_OT_UNDEF);
- } else {
- tcode = static_cast<MathMacro*>(p)->getTCode();
- lyxerr << "Macro2 " << s << ' ' << tcode << " " ;
+
+ // delete empty cells if necessary
+ if (array().empty()) {
+ bool popit;
+ bool removeit;
+ par()->idxDelete(idx(), popit, removeit);
+ if (popit && popLeft() && removeit)
+ plainErase();
+ return;
+ }
+
+ if (pos() == size())
+ return;
+
+ MathScriptInset * p = nextAtom()->asScriptInset();
+ if (p) {
+ p->removeScript(p->hasUp());
+ // Don't delete if there is anything left
+ if (p->hasUp() || p->hasDown())
+ return;
}
- } else {
- MathedInsetTypes fractype = LM_OT_FRAC;
- switch (l->token) {
- case LM_TK_BIGSYM:
- {
- p = new MathBigopInset(l->name, l->id);
- break;
- }
- case LM_TK_SYM:
- {
- if (l->id<255) {
- Insert(static_cast<byte>(l->id), MathIsBOPS(l->id) ?
- LM_TC_BOPS: LM_TC_SYMB);
- } else {
- p = new MathFuncInset(l->name);
- }
- break;
- }
- case LM_TK_STACK:
- fractype = LM_OT_STACKREL;
- lyxerr[Debug::MATHED] << " i:stackrel " << endl;
- case LM_TK_FRAC:
- {
- p = new MathFracInset(fractype);
- tcode = LM_TC_ACTIVE_INSET;
- break;
- }
- case LM_TK_SQRT:
- {
- p = new MathSqrtInset;
- tcode = LM_TC_ACTIVE_INSET;
- break;
- }
- case LM_TK_WIDE:
- {
- p = new MathDecorationInset(l->id);
- tcode = LM_TC_ACTIVE_INSET;
- break;
- }
- case LM_TK_FUNCLIM:
- {
- p = new MathFuncInset(l->name, LM_OT_FUNCLIM);
- break;
- }
- case LM_TK_SPACE:
- {
- p = new MathSpaceInset(l->id);
- break;
- }
- case LM_TK_DOTS:
- {
- p = new MathDotsInset(l->name, l->id);
- break;
- }
- case LM_TK_ACCENT:
- setAccent(l->id);
- break;
- case LM_TK_MACRO:
- p = MathMacroTable::mathMTable.getMacro(s);
- tcode = static_cast<MathMacro*>(p)->getTCode();
- lyxerr[Debug::MATHED] << "Macro " << s << ' ' << tcode << endl;
- break;
- default:
- {
- p = new MathFuncInset(l->name);
- break;
- }
+
+ plainErase();
+}
+
+
+void MathCursor::delLine()
+{
+ macroModeClose();
+
+ if (selection_) {
+ selDel();
+ return;
}
- }
- if (p) {
- Insert(p, tcode);
- par->Metrics();
- }
+
+ if (par()->nrows() > 1)
+ par()->delRow(row());
}
-bool MathedCursor::pullArg()
-{
- if (cursor->IsActive()) {
- MathParInset * p = cursor->GetActiveInset();
- if (!p) {
- return false;
+bool MathCursor::up(bool sel)
+{
+ dump("up 1");
+ macroModeClose();
+ selHandle(sel);
+
+ if (!selection_) {
+ // check whether we could move into a superscript
+ if (hasPrevAtom()) {
+ MathAtom & p = prevAtom();
+ if (p->asScriptInset() && p->asScriptInset()->hasUp()) {
+ pushRight(p);
+ idx() = 1;
+ pos() = size();
+ return true;
+ }
+ }
+
+ if (hasNextAtom()) {
+ MathAtom & n = nextAtom();
+ if (n->asScriptInset() && n->asScriptInset()->hasUp()) {
+ pushLeft(n);
+ idx() = 1;
+ pos() = 0;
+ return true;
+ }
+ }
}
- LyxArrayBase * a = p->GetData();
- p->SetData(0);
- Delete();
- if (a) {
- cursor->Merge(a);
- cursor->Adjust();
+
+ return goUp();
+}
+
+
+bool MathCursor::down(bool sel)
+{
+ dump("down 1");
+ macroModeClose();
+ selHandle(sel);
+
+ if (!selection_) {
+ // check whether we could move into a subscript
+ if (hasPrevAtom()) {
+ MathAtom & p = prevAtom();
+ if (p->asScriptInset() && p->asScriptInset()->hasDown()) {
+ pushRight(p);
+ idx() = 0;
+ pos() = size();
+ return true;
+ }
+ }
+
+ if (hasNextAtom()) {
+ MathAtom & n = nextAtom();
+ if (n->asScriptInset() && n->asScriptInset()->hasDown()) {
+ pushLeft(n);
+ idx() = 0;
+ pos() = 0;
+ return true;
+ }
+ }
}
-
- return true;
- }
- return false;
-}
-
-
-void MathedCursor::MacroModeOpen()
-{
- if (!macro_mode) {
- macroln = 0;
- macrobf[0] = '\0';
- imacro = new MathFuncInset(¯obf[0]);
- Insert (imacro);
- macro_mode = true;
- } else
- lyxerr << "Mathed Warning: Already in macro mode" << endl;
-}
-
-
-void MathedCursor::MacroModeClose()
-{
- if (macro_mode) {
- macro_mode = false;
- latexkeys * l = in_word_set(macrobf, macroln);
- if (macroln > 0 && (!l || (l && IsMacro(l->token, l->id))) &&
- !MathMacroTable::mathMTable.getMacro(macrobf)) {
- if (!l) {
- //imacro->SetName(strnew(macrobf));
- imacro->SetName(macrobf);
- // This guarantees that the string will be removed by destructor
- imacro->SetType(LM_OT_UNDEF);
- } else
- imacro->SetName(l->name);
- } else {
- Left();
- imacro->SetName("");
- if (cursor->GetInset()->GetType() == LM_OT_ACCENT) {
- setAccent(static_cast<MathAccentInset*>(cursor->GetInset())->getAccentCode());
- }
- cursor->Delete();
- if (l || MathMacroTable::mathMTable.getMacro(macrobf)) {
- Interpret(macrobf);
- }
- }
- imacro = 0;
- }
-}
-
-
-void MathedCursor::MacroModeBack()
-{
- if (macro_mode) {
- if (macroln>0) {
- macrobf[--macroln] = '\0';
- imacro->Metrics();
- } else
- MacroModeClose();
- } else
- lyxerr << "Mathed Warning: we are not in macro mode" << endl;
-}
-
-
-void MathedCursor::MacroModeInsert(char c)
-{
- if (macro_mode) {
- macrobf[macroln + 1] = macrobf[macroln];
- macrobf[macroln++] = c;
- imacro->Metrics();
- } else
- lyxerr << "Mathed Warning: we are not in macro mode" << endl;
-}
-
-
-void MathedCursor::SelCopy()
-{
- if (selection) {
- int p1 = (cursor->pos < selpos) ? cursor->pos: selpos;
- int p2 = (cursor->pos > selpos) ? cursor->pos: selpos;
- selarray = cursor->Copy(p1, p2);
- cursor->Adjust();
- SelClear();
- }
-}
-
-
-void MathedCursor::SelCut()
-{
- if (selection) {
- if (cursor->pos == selpos) return;
-
- int p1 = (cursor->pos < selpos) ? cursor->pos: selpos;
- int p2 = (cursor->pos > selpos) ? cursor->pos: selpos;
- selarray = cursor->Copy(p1, p2);
- cursor->Clean(selpos);
- cursor->Adjust();
- SelClear();
- }
+
+ return goDown();
}
-void MathedCursor::SelDel()
+bool MathCursor::toggleLimits()
{
-// lyxerr << "Deleting sel "
- if (selection) {
- if (cursor->pos == selpos) return;
- cursor->Clean(selpos);
- cursor->Adjust();
- SelClear();
- }
+ if (!hasPrevAtom())
+ return false;
+ MathScriptInset * t = prevAtom()->asScriptInset();
+ if (!t)
+ return false;
+ int old = t->limits();
+ t->limits(old < 0 ? 1 : -1);
+ return old != t->limits();
}
-void MathedCursor::SelPaste()
+void MathCursor::setSize(MathStyles size)
{
-// lyxerr << "paste " << selarray << " " << curor->pos;
- if (selection) SelDel();
- if (selarray) {
- cursor->Merge(selarray);
- cursor->Adjust();
- }
+ par()->userSetSize(size);
}
-void MathedCursor::SelStart()
+void MathCursor::macroModeClose()
{
- lyxerr[Debug::MATHED] << "Starting sel " << endl;
- if (!anchor) {
- selpos = cursor->pos;
- selstk = new MathStackXIter(mathstk);
- anchor = selstk->Item(-1);
- anchor->SetData(cursor->p);
- anchor->GoBegin();
- anchor->goPosAbs(selpos);
- selection = true;
-
- }
-}
-
-
-void MathedCursor::SelClear()
-{
- lyxerr[Debug::MATHED] << "Clearing sel " << endl;
- selection = false;
- delete selstk;
- selstk = 0;
- anchor = 0;
-}
-
-
-
-// Anchor position must be at the same level that stack.
-void MathedCursor::SelBalance()
-{
- int d = mathstk.Level() - selstk->Level();
-
- // If unbalanced, balance them
- while (d != 0) {
- if (d < 0) {
-// lyxerr << "b[" << mathstk.Level() << " " << selstk->Level << " " << anchor->GetX() << " " << cursor->GetX() << "]";
- anchor = selstk->pop();
- if (anchor->GetX() >= cursor->GetX())
- anchor->Next();
- } else {
-// lyxerr <<"a[" << mathstk.Level() << " " << selstk->Level() <<"]";
- Pop();
- }
- d = mathstk.Level() - selstk->Level();
- }
-
- // Once balanced the levels, check that they are at the same paragraph
- selpos = anchor->pos;
-}
-
-
-void MathedCursor::SelGetArea(int ** xp, int ** yp, int & np)
-{
- static int xpoint[10];
- static int ypoint[10];
-
- if (!selection) {
- np = 0;
- xpoint[0] = 0;
- ypoint[0] = 0;
- *xp = &xpoint[0];
- *yp = &ypoint[0];
- return;
- }
-
- // single row selection
- int i = 0, x, y, a, d, xo, yo, x1, y1, a1, d1;
-
- // Balance anchor and cursor
- SelBalance();
-
- cursor->p->GetXY(xo, yo);
- int w = cursor->p->Width();
- cursor->GetPos(x1, y1);
- cursor->getAD(a1, d1);
- anchor->GetPos(x, y);
- anchor->getAD(a, d);
-
- xpoint[i] = x;
- ypoint[i++] = y + d;
- xpoint[i] = x;
- ypoint[i++] = y - a;
-
- if (y != y1) {
- xpoint[i] = xo + w;
- ypoint[i++] = y - a;
-
- if (x1 < xo + w) {
- xpoint[i] = xo + w;
- ypoint[i++] = y1 - a;
- }
- }
-
- xpoint[i] = x1;
- ypoint[i++] = y1 - a;
- xpoint[i] = x1;
- ypoint[i++] = y1 + d;
-
- if (y != y1) {
- xpoint[i] = xo;
- ypoint[i++] = y1 + d;
- if (x > xo) {
- xpoint[i] = xo;
- ypoint[i++] = y + d;
- }
- }
- xpoint[i] = xpoint[0];
- ypoint[i++] = ypoint[0];
-
- *xp = &xpoint[0];
- *yp = &ypoint[0];
- np = i;
-// lyxerr << "AN[" << x << " " << y << " " << x1 << " " << y1 << "] ";
-// lyxerr << "MT[" << a << " " << d << " " << a1 << " " << d1 << "] ";
-// for (i = 0; i < np; ++i)
-// lyxerr << "XY[" << point[i].x << " " << point[i].y << "] ";
-
-}
-
-
-void MathedCursor::setAccent(int ac)
-{
- if (ac > 0 && accent < 8) {
- nestaccent[accent++] = ac;
- } else
- accent = 0; // consumed!
-}
-
-
-int MathedCursor::getAccent() const
-{
- return (accent > 0) ? nestaccent[accent - 1]: 0;
-}
-
-
-void MathedCursor::doAccent(byte c, MathedTextCodes t)
-{
- MathedInset * ac = 0;
-
- for (int i = accent - 1; i >= 0; --i) {
- if (i == accent - 1)
- ac = new MathAccentInset(c, t, nestaccent[i]);
- else
- ac = new MathAccentInset(ac, nestaccent[i]);
+ string s = macroName();
+ if (s.size()) {
+ size_type old = pos();
+ pos() -= s.size();
+ array().erase(pos(), old);
+ interpret(s);
}
- if (ac)
- cursor->Insert(ac);
-
- accent = 0; // consumed!
}
-void MathedCursor::doAccent(MathedInset * p)
+int MathCursor::macroNamePos() const
{
- MathedInset * ac = 0;
-
- for (int i = accent - 1; i >= 0; --i) {
- if (i == accent - 1)
- ac = new MathAccentInset(p, nestaccent[i]);
- else
- ac = new MathAccentInset(ac, nestaccent[i]);
+ for (int i = pos() - 1; i >= 0; --i) {
+ MathAtom & p = array().at(i);
+ if (p->code() == LM_TC_TEX && p->getChar() == '\\')
+ return i;
+ }
+ return -1;
+}
+
+
+string MathCursor::macroName() const
+{
+ string s;
+ for (int i = macroNamePos(); i >= 0 && i < int(pos()); ++i)
+ s += array().at(i)->getChar();
+ return s;
+}
+
+
+void MathCursor::selCopy()
+{
+ seldump("selCopy");
+ if (selection_) {
+ theSelection.grab(*this);
+ selClear();
}
- if (ac)
- cursor->Insert(ac);
-
- accent = 0; // consumed!
}
+
+void MathCursor::selCut()
+{
+ seldump("selCut");
+ if (selection_) {
+ theSelection.grab(*this);
+ theSelection.erase(*this);
+ selClear();
+ } else {
+ theSelection.clear();
+ }
+}
+
+
+void MathCursor::selDel()
+{
+ seldump("selDel");
+ if (selection_) {
+ theSelection.erase(*this);
+ selClear();
+ }
+}
+
+
+void MathCursor::selPaste()
+{
+ seldump("selPaste");
+ theSelection.paste(*this);
+ theSelection.grab(*this);
+ //selClear();
+}
+
+
+void MathCursor::selHandle(bool sel)
+{
+ if (sel == selection_)
+ return;
+
+ theSelection.clear();
+ Anchor_ = Cursor_;
+ selection_ = sel;
+}
+
+
+void MathCursor::selStart()
+{
+ seldump("selStart");
+ if (selection_)
+ return;
+
+ theSelection.clear();
+ Anchor_ = Cursor_;
+ selection_ = true;
+}
+
+
+void MathCursor::selClear()
+{
+ seldump("selClear");
+ selection_ = false;
+}
+
+
+void MathCursor::drawSelection(Painter & pain) const
+{
+ if (!selection_)
+ return;
+
+ MathCursorPos i1;
+ MathCursorPos i2;
+ getSelection(i1, i2);
+
+ //lyxerr << "selection from: " << i1 << " to " << i2 << "\n";
+
+ if (i1.idx_ == i2.idx_) {
+ MathXArray & c = i1.xcell();
+ int x1 = c.xo() + c.pos2x(i1.pos_);
+ int y1 = c.yo() - c.ascent();
+ int x2 = c.xo() + c.pos2x(i2.pos_);
+ int y2 = c.yo() + c.descent();
+ pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
+ } else {
+ std::vector<MathInset::idx_type> indices
+ = (*i1.par_)->idxBetween(i1.idx_, i2.idx_);
+ for (unsigned i = 0; i < indices.size(); ++i) {
+ MathXArray & c = i1.xcell(indices[i]);
+ int x1 = c.xo();
+ int y1 = c.yo() - c.ascent();
+ int x2 = c.xo() + c.width();
+ int y2 = c.yo() + c.descent();
+ pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
+ }
+ }
+}
+
+
+void MathCursor::handleFont(MathTextCodes t)
+{
+ macroModeClose();
+ if (selection_) {
+ MathCursorPos i1;
+ MathCursorPos i2;
+ getSelection(i1, i2);
+ if (i1.idx_ == i2.idx_) {
+ MathArray & ar = i1.cell();
+ for (MathInset::pos_type pos = i1.pos_; pos != i2.pos_; ++pos)
+ ar.at(pos)->handleFont(t);
+ }
+ } else
+ lastcode_ = (lastcode_ == t) ? LM_TC_VAR : t;
+}
+
+
+void MathCursor::handleDelim(string const & l, string const & r)
+{
+ handleNest(new MathDelimInset(l, r));
+}
+
+
+void MathCursor::handleNest(MathInset * p)
+{
+ if (selection_) {
+ selCut();
+ p->cell(0) = theSelection.glue();
+ }
+ insert(MathAtom(p)); // this invalidates p!
+ pushRight(prevAtom());
+}
+
+
+void MathCursor::getPos(int & x, int & y)
+{
+#ifdef WITH_WARNINGS
+#warning This should probably take cellXOffset and cellYOffset into account
+#endif
+ x = xarray().xo() + xarray().pos2x(pos());
+ y = xarray().yo();
+}
+
+
+MathAtom & MathCursor::par() const
+{
+ return *cursor().par_;
+}
+
+
+InsetFormulaBase const * MathCursor::formula()
+{
+ 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_;
+}
+
+
+MathCursor::pos_type & MathCursor::pos()
+{
+ return cursor().pos_;
+}
+
+
+bool MathCursor::inMacroMode() const
+{
+ return macroNamePos() != -1;
+}
+
+
+bool MathCursor::selection() const
+{
+ return selection_;
+}
+
+
+MathArrayInset * MathCursor::enclosingArray(MathCursor::idx_type & idx) const
+{
+ for (int i = Cursor_.size() - 1; i >= 0; --i) {
+ MathArrayInset * p = (*Cursor_[i].par_)->asArrayInset();
+ if (p) {
+ idx = Cursor_[i].idx_;
+ return p;
+ }
+ }
+ return 0;
+}
+
+
+void MathCursor::pullArg(bool goright)
+{
+ dump("pullarg");
+ MathArray a = array();
+
+ MathScriptInset const * p = par()->asScriptInset();
+ if (p) {
+ // special handling for scripts
+ const bool up = p->hasUp();
+ popLeft();
+ MathScriptInset * q = nextAtom()->asScriptInset();
+ if (q)
+ q->removeScript(up);
+ ++pos();
+ array().insert(pos(), a);
+ return;
+ }
+
+ if (popLeft()) {
+ plainErase();
+ array().insert(pos(), a);
+ if (goright)
+ pos() += a.size();
+ }
+}
+
+
+MathStyles MathCursor::style() const
+{
+ return xarray().style();
+}
+
+
+void MathCursor::normalize() const
+{
+#ifdef WITH_WARNINGS
+#warning This is evil!
+#endif
+ MathCursor * it = const_cast<MathCursor *>(this);
+
+ if (idx() >= par()->nargs()) {
+ lyxerr << "this should not really happen - 1: "
+ << idx() << " " << par()->nargs() << "\n";
+ dump("error 2");
+ }
+ it->idx() = min(idx(), par()->nargs() - 1);
+
+ if (pos() > size()) {
+ lyxerr << "this should not really happen - 2: "
+ << pos() << " " << size() << "\n";
+ dump("error 4");
+ }
+ it->pos() = min(pos(), size());
+}
+
+
+MathCursor::size_type MathCursor::size() const
+{
+ return array().size();
+}
+
+
+MathCursor::col_type MathCursor::col() const
+{
+ return par()->col(idx());
+}
+
+
+MathCursor::row_type MathCursor::row() const
+{
+ return par()->row(idx());
+}
+
+
+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().at(pos() - 1);
+}
+
+
+MathAtom & MathCursor::prevAtom()
+{
+ lyx::Assert(pos() > 0);
+ return array().at(pos() - 1);
+}
+
+
+MathAtom const & MathCursor::nextAtom() const
+{
+ lyx::Assert(pos() < size());
+ return array().at(pos());
+}
+
+
+MathAtom & MathCursor::nextAtom()
+{
+ lyx::Assert(pos() < size());
+ return array().at(pos());
+}
+
+
+MathArray & MathCursor::array() const
+{
+ static MathArray dummy;
+
+ if (idx() >= par()->nargs()) {
+ lyxerr << "############ idx_ " << idx() << " not valid\n";
+ return dummy;
+ }
+
+ return cursor().cell();
+}
+
+
+MathXArray & MathCursor::xarray() const
+{
+ return cursor().xcell();
+}
+
+
+void MathCursor::idxNext()
+{
+ par()->idxNext(idx(), pos());
+}
+
+
+void MathCursor::idxPrev()
+{
+ par()->idxPrev(idx(), pos());
+}
+
+
+void MathCursor::splitCell()
+{
+ if (idx() == par()->nargs() - 1)
+ return;
+ MathArray ar = array();
+ ar.erase(0, pos());
+ array().erase(pos(), size());
+ ++idx();
+ pos() = 0;
+ array().insert(0, ar);
+}
+
+
+void MathCursor::breakLine()
+{
+ // leave inner cells
+ while (popRight())
+ ;
+
+ MathMatrixInset * p = formula()->par()->asMatrixInset();
+ if (!p)
+ return;
+
+ if (p->getType() == LM_OT_SIMPLE || p->getType() == LM_OT_EQUATION) {
+ p->mutate(LM_OT_EQNARRAY);
+ idx() = 0;
+ pos() = size();
+ } else {
+ p->addRow(row());
+
+ // split line
+ const row_type r = row();
+ for (col_type c = col() + 1; c < p->ncols(); ++c) {
+ const MathMatrixInset::idx_type i1 = p->index(r, c);
+ const MathMatrixInset::idx_type i2 = p->index(r + 1, c);
+ lyxerr << "swapping cells " << i1 << " and " << i2 << "\n";
+ p->cell(i1).swap(p->cell(i2));
+ }
+
+ // split cell
+ splitCell();
+ p->cell(idx()).swap(p->cell(idx() + p->ncols() - 1));
+ }
+}
+
+
+char MathCursor::valign() const
+{
+ idx_type idx;
+ MathArrayInset * p = enclosingArray(idx);
+ return p ? p->valign() : '\0';
+}
+
+
+char MathCursor::halign() const
+{
+ idx_type idx;
+ MathArrayInset * p = enclosingArray(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()
+{
+ return Cursor_.back();
+}
+
+
+MathCursorPos const & MathCursor::cursor() const
+{
+ return Cursor_.back();
+}
+
+
+int MathCursor::cellXOffset() const
+{
+ return par()->cellXOffset(idx());
+}
+
+
+int MathCursor::cellYOffset() const
+{
+ return par()->cellYOffset(idx());
+}
+
+
+int MathCursor::xpos() const
+{
+ return cellXOffset() + xarray().pos2x(pos());
+}
+
+
+int MathCursor::ypos() const
+{
+ return cellYOffset();
+}
+
+
+
+void MathCursor::gotoX(int x)
+{
+ pos() = xarray().x2pos(x - cellXOffset());
+}
+
+
+bool MathCursor::goUp()
+{
+ // first ask the inset if it knows better then we
+ if (par()->idxUp(idx(), pos()))
+ return true;
+
+ // leave subscript to the nearest side
+ MathScriptInset * p = par()->asScriptInset();
+ if (p && p->hasDown()) {
+ if (pos() <= size() / 2)
+ popLeft();
+ else
+ popRight();
+ return true;
+ }
+
+ // if not, apply brute force.
+ int x0;
+ int y0;
+ getPos(x0, y0);
+ std::vector<MathCursorPos> save = Cursor_;
+ MathAtom const & out = formula()->par();
+ y0 -= xarray().ascent();
+ for (int y = y0 - 4; y > out->yo() - out->ascent(); y -= 4) {
+ setPos(x0, y);
+ if (save != Cursor_ && xarray().yo() < y0)
+ return true;
+ }
+ Cursor_ = save;
+ return false;
+}
+
+
+bool MathCursor::goDown()
+{
+ // first ask the inset if it knows better then we
+ if (par()->idxDown(idx(), pos()))
+ return true;
+
+ // leave superscript to the nearest side
+ MathScriptInset * p = par()->asScriptInset();
+ if (p && p->hasUp()) {
+ if (pos() <= size() / 2)
+ popLeft();
+ else
+ popRight();
+ return true;
+ }
+
+ // if not, apply brute force.
+ int x0;
+ int y0;
+ getPos(x0, y0);
+ std::vector<MathCursorPos> save = Cursor_;
+ MathAtom const & out = formula()->par();
+ y0 += xarray().descent();
+ for (int y = y0 + 4; y < out->yo() + out->descent(); y += 4) {
+ setPos(x0, y);
+ if (save != Cursor_ && xarray().yo() > y0)
+ return true;
+ }
+ Cursor_ = save;
+ return false;
+}
+
+
+bool MathCursor::idxLeft()
+{
+ return par()->idxLeft(idx(), pos());
+}
+
+
+bool MathCursor::idxRight()
+{
+ return par()->idxRight(idx(), pos());
+}
+
+
+void MathCursor::interpret(string const & s)
+{
+ //lyxerr << "interpret 1: '" << s << "'\n";
+ //lyxerr << "in: " << in_word_set(s) << " \n";
+
+ if (s.empty())
+ return;
+
+ if (s.size() == 1) {
+ interpret(s[0]);
+ return;
+ }
+
+ //lyxerr << "char: '" << s[0] << "' int: " << int(s[0]) << endl;
+ //owner_->getIntl()->getTrans().TranslateAndInsert(s[0], lt);
+ //lyxerr << "trans: '" << s[0] << "' int: " << int(s[0]) << endl;
+
+ if (s.size() > 7 && s.substr(0, 7) == "matrix ") {
+ unsigned int m = 1;
+ unsigned int n = 1;
+ string v_align;
+ string h_align;
+ istringstream is(s.substr(7).c_str());
+ is >> m >> n >> v_align >> h_align;
+ m = std::max(1u, m);
+ n = std::max(1u, n);
+ v_align += 'c';
+ niceInsert(MathAtom(new MathArrayInset(m, n, v_align[0], h_align)));
+ return;
+ }
+
+ if (s == "\\over" || s == "\\choose" || s == "\\atop") {
+ MathArray ar = array();
+ MathAtom t = createMathInset(s.substr(1));
+ t->asNestInset()->cell(0).swap(array());
+ pos() = 0;
+ niceInsert(t);
+ popRight();
+ left();
+ return;
+ }
+
+ niceInsert(createMathInset(s.substr(1)));
+}
+
+
+void MathCursor::interpret(char c)
+{
+ //lyxerr << "interpret 2: '" << c << "'\n";
+
+ if (inMacroMode()) {
+ string name = macroName();
+
+ if (name == "\\" && c == '#') {
+ insert(c, LM_TC_TEX);
+ return;
+ }
+
+ if (name == "\\" && c == '\\') {
+ backspace();
+ interpret("\\backslash");
+ return;
+ }
+
+ if (name == "\\#" && '1' <= c && c <= '9') {
+ insert(c, LM_TC_TEX);
+ macroModeClose();
+ return;
+ }
+
+ if (isalpha(c)) {
+ insert(c, LM_TC_TEX);
+ return;
+ }
+
+ if (name == "\\") {
+ insert(c, LM_TC_TEX);
+ macroModeClose();
+ return;
+ }
+
+ macroModeClose();
+ return;
+ }
+
+ // no macro mode
+ if (c == '^' || c == '_') {
+ const bool up = (c == '^');
+ selCut();
+ if (hasPrevAtom() && prevAtom()->asScriptInset()) {
+ prevAtom()->asScriptInset()->ensure(up);
+ pushRight(prevAtom());
+ pos() = size();
+ } else if (hasNextAtom() && nextAtom()->asScriptInset()) {
+ nextAtom()->asScriptInset()->ensure(up);
+ pushLeft(nextAtom());
+ pos() = 0;
+ } else {
+ plainInsert(MathAtom(new MathScriptInset(up)));
+ pushRight(prevAtom());
+ }
+ idx() = up;
+ selPaste();
+ return;
+ }
+
+ if (selection_)
+ selDel();
+
+ if (lastcode_ == LM_TC_TEXTRM) {
+ insert(c, LM_TC_TEXTRM);
+ return;
+ }
+
+ if (c == ' ') {
+ if (hasPrevAtom() && prevAtom()->asSpaceInset()) {
+ prevAtom()->asSpaceInset()->incSpace();
+ return;
+ }
+
+ if (mathcursor->popRight())
+ return;
+
+#warning look here
+ // this would not work if the inset is in an table!
+ //bv->text->cursorRight(bv, true);
+ //result = FINISHED;
+ return;
+ }
+
+ if (strchr("{}", c)) {
+ insert(c, LM_TC_TEX);
+ return;
+ }
+
+ if (strchr("#$%", c)) {
+ insert(MathAtom(new MathSpecialCharInset(c)));
+ lastcode_ = LM_TC_VAR;
+ return;
+ }
+
+ if (isalpha(c) && (lastcode_ == LM_TC_GREEK || lastcode_ == LM_TC_GREEK1)) {
+ static char const greekl[][26] =
+ {"alpha", "beta", "chi", "delta", "epsilon", "phi",
+ "gamma", "eta", "iota", "epsilon", "kappa", "lambda", "mu",
+ "nu", "omikron", "pi", "vartheta", "rho", "sigma",
+ "tau", "upsilon", "theta", "omega", "xi", "varphi", "zeta"};
+ static char const greeku[][26] =
+ {"Alpha", "Beta", "chi", "Delta", "varepsilon", "Phi",
+ "Gamma", "Eta", "Iota", "Epsilon", "Kappa", "Lambda", "Mu",
+ "Nu", "Omikron", "Pi", "vartheta", "varrho", "Sigma", "varsigma",
+ "Upsilon", "Theta", "Omega", "Xi", "Varphi", "Zeta"};
+
+ latexkeys const * l = 0;
+ if ('a' <= c && c <= 'z')
+ l = in_word_set(greekl[c - 'a']);
+ if ('A' <= c && c <= 'Z')
+ l = in_word_set(greeku[c - 'A']);
+
+ if (l)
+ insert(createMathInset(l));
+ else
+ insert(c, LM_TC_VAR);
+
+#warning greek insert problem? look here!
+ if (lastcode_ == LM_TC_GREEK1)
+ lastcode_ = LM_TC_VAR;
+ return;
+ }
+
+ if (c == '\\') {
+ insert(c, LM_TC_TEX);
+ //bv->owner()->message(_("TeX mode"));
+ return;
+ }
+
+ // no special circumstances, so insert the character without any fuss
+ insert(c, LM_TC_MIN);
+}
+
+
+
+////////////////////////////////////////////////////////////////////////
+
+
+bool operator==(MathCursorPos const & ti, MathCursorPos const & it)
+{
+ return ti.par_ == it.par_ && ti.idx_ == it.idx_ && ti.pos_ == it.pos_;
+}
+
+
+bool operator<(MathCursorPos const & ti, MathCursorPos const & it)
+{
+ if (ti.par_ != it.par_) {
+ lyxerr << "can't compare cursor and anchor in different insets\n";
+ return true;
+ }
+ if (ti.idx_ != it.idx_)
+ return ti.idx_ < it.idx_;
+ return ti.pos_ < it.pos_;
+}
+
+
+MathArray & MathCursorPos::cell(MathCursor::idx_type idx) const
+{
+ return (*par_)->cell(idx);
+}
+
+
+MathArray & MathCursorPos::cell() const
+{
+ return (*par_)->cell(idx_);
+}
+
+
+MathXArray & MathCursorPos::xcell(MathCursor::idx_type idx) const
+{
+ return (*par_)->xcell(idx);
+}
+
+
+MathXArray & MathCursorPos::xcell() const
+{
+ return (*par_)->xcell(idx_);
+}
+
+
+MathCursorPos MathCursor::normalAnchor() const
+{
+ // use Anchor on the same level as Cursor
+ MathCursorPos normal = Anchor_[Cursor_.size() - 1];
+ if (Cursor_.size() < Anchor_.size() && !(normal < cursor())) {
+ // anchor is behind cursor -> move anchor behind the inset
+ ++normal.pos_;
+ }
+ return normal;
+}
+
+
projects / lyx.git / blobdiff