]> git.lyx.org Git - lyx.git/blobdiff - src/mathed/math_cursor.C
oh well
[lyx.git] / src / mathed / math_cursor.C
index 2876e46e5c2d3958acf712cc65a42e993a7f2a2b..914d4e3b484090779facb48cecd2cc6370e9b534 100644 (file)
@@ -133,15 +133,25 @@ struct Selection
                        cursor.insert(data_.cell(0));
                } else {
                        // mulitple cells
-                       idx_type idx;
+                       idx_type idx; // index of upper left cell
                        MathGridInset * p = cursor.enclosingGrid(idx);
                        col_type const numcols = min(data_.ncols(), p->ncols() - p->col(idx));
                        row_type const numrows = min(data_.nrows(), p->nrows() - p->row(idx));
-                       for (row_type row = 0; row < numrows; ++row)
+                       for (row_type row = 0; row < numrows; ++row) {
                                for (col_type col = 0; col < numcols; ++col) {
                                        idx_type i = p->index(row + p->row(idx), col + p->col(idx));
                                        p->cell(i).push_back(data_.cell(data_.index(row, col)));
                                }
+                               // append the left over horizontal cells to the last column
+                               idx_type i = p->index(row + p->row(idx), p->ncols() - 1);
+                               for (col_type col = numcols; col < data_.ncols(); ++col)
+                                       p->cell(i).push_back(data_.cell(data_.index(row, col)));
+                       }
+                       // append the left over vertical cells to the last _cell_
+                       idx_type i = p->nargs() - 1;
+                       for (row_type row = numrows; row < data_.nrows(); ++row)
+                               for (col_type col = 0; col < data_.ncols(); ++col)
+                                       p->cell(i).push_back(data_.cell(data_.index(row, col)));
                }
        }
 
@@ -239,12 +249,6 @@ bool MathCursor::popRight()
 #endif
 
 
-UpdatableInset * MathCursor::asHyperActiveInset() const
-{
-       return par()->asHyperActiveInset();
-}
-
-
 bool MathCursor::isInside(MathInset const * p) const
 {
        for (unsigned i = 0; i < Cursor_.size(); ++i)
@@ -256,9 +260,6 @@ bool MathCursor::isInside(MathInset const * p) const
 
 bool MathCursor::openable(MathAtom const & t, bool sel) const
 {
-       if (t->isHyperActive())
-               return true;
-
        if (!t->isActive())
                return false;
 
@@ -306,9 +307,6 @@ bool MathCursor::left(bool sel)
        lastcode_ = LM_TC_MIN;
 
        if (hasPrevAtom() && openable(prevAtom(), sel)) {
-               if (prevAtom()->isHyperActive()) {
-                       lyxerr << "entering hyperactive inset\n";
-               }
                pushRight(prevAtom());
                return true;
        }
@@ -329,12 +327,6 @@ bool MathCursor::right(bool sel)
        lastcode_ = LM_TC_MIN;
 
        if (hasNextAtom() && openable(nextAtom(), sel)) {
-               if (nextAtom()->isHyperActive()) {
-                       lyxerr << "entering hyperactive inset\n";
-                       int x, y;
-                       getPos(x, y);
-                       nextAtom()->edit(formula()->view(), x, y, 0);
-               }
                pushLeft(nextAtom());
                return true;
        }
@@ -358,7 +350,7 @@ void MathCursor::last()
 
 
 bool positionable(MathCursor::cursor_type const & cursor,
-                  MathCursor::cursor_type const & anchor)
+                 MathCursor::cursor_type const & anchor)
 {
        // avoid deeper nested insets when selecting
        if (cursor.size() > anchor.size())
@@ -537,18 +529,16 @@ void MathCursor::erase()
                return;
        }
 
-       // delete empty cells if necessary
-       if (array().empty()) {
-               bool popit;
-               bool removeit;
-               par()->idxDelete(idx(), popit, removeit);
-               if (popit && popLeft() && removeit)
-                       plainErase();
-               return;
-       }
+       // delete empty cells if possible
+       if (array().empty())
+               if (par()->idxDelete(idx()))
+                       return;
 
-       if (pos() == size())
+       // old behaviour when in last position of cell
+       if (pos() == size()) {
+               par()->idxGlue(idx());
                return;
+       }
 
        MathScriptInset * p = nextAtom()->asScriptInset();
        if (p) {
@@ -626,13 +616,14 @@ bool MathCursor::toggleLimits()
 
 void MathCursor::macroModeClose()
 {
+       MathInset::difference_type const t = macroNamePos();
+       if (t == -1)
+               return;
        string s = macroName();
-       if (s.size()) {
-               size_type old = pos();
-               pos() -= s.size();
-               array().erase(pos(), old);
+       array().erase(t, pos());
+       pos() = t;
+       if (s != "\\")
                interpret(s);
-       }
 }
 
 
@@ -889,12 +880,20 @@ MathGridInset * MathCursor::enclosingGrid(MathCursor::idx_type & idx) const
                if (p) {
                        idx = Cursor_[i].idx_;
                        return p;
+                       lyxerr << "found grid and idx: " << idx << "\n";
                }
        }
        return 0;
 }
 
 
+void MathCursor::popToEnclosingGrid()
+{
+       while (Cursor_.size() && !Cursor_.back().par_->asGridInset())
+               Cursor_.pop_back();
+}
+
+
 void MathCursor::pullArg(bool goright)
 {
        dump("pullarg");
@@ -946,18 +945,18 @@ void MathCursor::normalize()
        }
 #endif
 
-       if (idx() >= par()->nargs()) {
+       if (idx() >= par()->nargs()) {
                lyxerr << "this should not really happen - 1: "
                       << idx() << " " << par()->nargs() << "\n";
                dump("error 2");
        }
-       idx() = min(idx(), par()->nargs() - 1);
+       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);
+               WriteStream wi(lyxerr, false, true);
                par()->write(wi);
                lyxerr << "\n";
                dump("error 4");
@@ -965,12 +964,14 @@ void MathCursor::normalize()
        pos() = min(pos(), size());
 
        // remove empty scripts if possible
-       for (pos_type i = 0; i < size(); ++i) {
-               MathScriptInset * p = array().at(i)->asScriptInset();
-               if (p) {
-                       p->removeEmptyScripts();
-                       if (p->empty())
-                               array().erase(i);
+       if (1) {
+               for (pos_type i = 0; i < size(); ++i) {
+                       MathScriptInset * p = array().at(i)->asScriptInset();
+                       if (p) {
+                               p->removeEmptyScripts();
+                               //if (p->empty())
+                               //      array().erase(i);
+                       }
                }
        }
 
@@ -1175,6 +1176,9 @@ MathCursorPos const & MathCursor::cursor() const
 
 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 xlow, xhigh, ylow, yhigh;
 
   int xo, yo;
@@ -1219,8 +1223,10 @@ bool MathCursor::goUpDown(bool up)
 
        // try to find an inset that knows better then we
        while (1) {
-               // we found a cell that thinks it has something "below" us.
+               ///lyxerr << "updown: We are in " << *par() << " idx: " << idx() << '\n';
+               // ask inset first
                if (par()->idxUpDown(idx(), up)) {
+                       // we found a cell that thinks it has something "below" us.
                        ///lyxerr << "updown: found inset that handles UpDown\n";
                        xarray().boundingBox(xlow, xhigh, ylow, yhigh);
                        // project (xo,yo) onto proper box
@@ -1235,10 +1241,11 @@ bool MathCursor::goUpDown(bool up)
                        return true;
                }
 
+               // leave inset
                if (!popLeft()) {
                        // no such inset found, just take something "above"
                        ///lyxerr << "updown: handled by strange case\n";
-                       return 
+                       return
                                bruteFind(xo, yo,
                                        formula()->xlow(),
                                        formula()->xhigh(),
@@ -1246,7 +1253,12 @@ bool MathCursor::goUpDown(bool up)
                                        up ? yo - 4 : formula()->yhigh()
                                );
                }
-               ///lyxerr << "updown: looping\n";
+
+               // any improvement so far?
+               int xnew, ynew;
+               getPos(xnew, ynew);
+               if (up ? ynew < yo : ynew > yo)
+                       return true;
        }
 }
 
@@ -1267,7 +1279,9 @@ bool MathCursor::bruteFind
                        int yo = top.ypos();
                        if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
                                double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
-                               if (d < best_dist) {
+                               // '<=' 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.cursor();
                                }
@@ -1303,9 +1317,6 @@ bool MathCursor::interpret(string const & s)
        if (s.empty())
                return true;
 
-       if (s.size() == 1)
-               return interpret(s[0]);
-
        //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;
@@ -1345,9 +1356,11 @@ bool MathCursor::interpret(string const & s)
                return true;
        }
 
-       if (s == "\\over" || s == "\\choose" || s == "\\atop") {
+       string name = s.substr(1);
+
+       if (name == "over" || name == "choose" || name == "atop") {
                MathArray ar = array();
-               MathAtom t(createMathInset(s.substr(1)));
+               MathAtom t(createMathInset(name));
                t->asNestInset()->cell(0).swap(array());
                pos() = 0;
                niceInsert(t);
@@ -1356,27 +1369,36 @@ bool MathCursor::interpret(string const & s)
                return true;
        }
 
-       latexkeys const * l = in_word_set(s.substr(1));
+       latexkeys const * l = in_word_set(name);
        if (l && (l->token == LM_TK_FONT || l->token == LM_TK_OLDFONT)) {
                lastcode_ = static_cast<MathTextCodes>(l->id);
                return true;
        }
 
        // prevent entering of recursive macros
-       if (formula()->lyxCode() == Inset::MATHMACRO_CODE 
-               && formula()->getInsetName() == s.substr(1))
+       if (formula()->lyxCode() == Inset::MATHMACRO_CODE
+               && formula()->getInsetName() == name)
        {
                lyxerr << "can't enter recursive macro\n";
                return true;
        }
 
-       niceInsert(createMathInset(s.substr(1)));
+       niceInsert(createMathInset(name));
        return true;
 }
 
 
 bool MathCursor::script(bool up)
 {
+       // Hack to get \\^ and \\_ working
+       if (inMacroMode() && macroName() == "\\") {
+               if (up)
+                       interpret("\\mathcircumflex");
+               else
+                       interpret('_');
+               return true;
+       }
+
        macroModeClose();
        selCut();
        if (hasPrevAtom() && prevAtom()->asScriptInset()) {
@@ -1404,13 +1426,14 @@ bool MathCursor::script(bool up)
 
 bool MathCursor::interpret(char c)
 {
+       //lyxerr << "interpret 2: '" << c << "'\n";
        if (inMacroArgMode()) {
                --pos();
                plainErase();
                int n = c - '0';
                MathMacroTemplate * p = formula()->par()->asMacroTemplate();
                if (p && 1 <= n && n <= p->numargs())
-                       insert(MathAtom(new MathMacroArgument(c - '0')));
+                       insert(MathAtom(new MathMacroArgument(c - '0', lastcode_)));
                else {
                        insert(MathAtom(new MathSpecialCharInset('#')));
                        interpret(c); // try again
@@ -1421,31 +1444,34 @@ bool MathCursor::interpret(char c)
        // handle macroMode
        if (inMacroMode()) {
                string name = macroName();
+               //lyxerr << "interpret name: '" << name << "'\n";
 
-               if (name == "\\" && c == '\\') {
-                       backspace();
-                       interpret("\\backslash");
+               // extend macro name if possible
+               if (isalpha(c)) {
+                       insert(c, LM_TC_TEX);
                        return true;
                }
 
-               if (isalpha(c)) {
-                       insert(c, LM_TC_TEX);
+               // leave macro mode if explicitly requested
+               if (c == ' ') {
+                       macroModeClose();
                        return true;
                }
 
+               // handle 'special char' macros
                if (name == "\\") {
-                       insert(c, LM_TC_TEX);
-                       macroModeClose();
+                       // remove the '\\'
+                       backspace();
+                       if (c == '\\')
+                               interpret("\\backslash");
+                       else
+                               interpret(string("\\") + c);
                        return true;
                }
 
+               // leave macro mode and try again
                macroModeClose();
-
-               if (c == '\\')
-                       insert(c, LM_TC_TEX);
-               else if (c != ' ')
-                       insert(c, lastcode_);
-
+               interpret(c);
                return true;
        }
 
@@ -1576,5 +1602,5 @@ string MathCursor::info() const
        ostringstream os;
        if (pos() > 0)
                prevAtom()->infoize(os);
-       return os.str();
+       return os.str().c_str(); // .c_str() needed for lyxstring
 }