+
+
+
+
+//
+// CursorBase
+//
+
+
+void increment(CursorBase & it)
+{
+ CursorSlice & top = it.back();
+ MathArray & ar = top.asMathInset()->cell(top.idx_);
+
+ // move into the current inset if possible
+ // it is impossible for pos() == size()!
+ MathInset * n = 0;
+ if (top.pos() != top.lastpos())
+ n = (ar.begin() + top.pos_)->nucleus();
+ if (n && n->isActive()) {
+ it.push_back(CursorSlice(n));
+ return;
+ }
+
+ // otherwise move on one cell back if possible
+ if (top.pos() < top.lastpos()) {
+ // pos() == lastpos() is valid!
+ ++top.pos_;
+ return;
+ }
+
+ // otherwise try to move on one cell if possible
+ while (top.idx() < top.lastidx()) {
+ ++top.idx_;
+ if (top.asMathInset()->validCell(top.idx_)) {
+ top.pos_ = 0;
+ return;
+ }
+ }
+
+ // otherwise leave array, move on one back
+ // this might yield pos() == size(), but that's a ok.
+ it.pop_back();
+ // it certainly invalidates top
+ ++it.back().pos_;
+}
+
+
+CursorBase ibegin(InsetBase * p)
+{
+ CursorBase it;
+ it.push_back(CursorSlice(p));
+ return it;
+}
+
+
+CursorBase iend(InsetBase * p)
+{
+ CursorBase it;
+ it.push_back(CursorSlice(p));
+ CursorSlice & cur = it.back();
+ cur.idx() = cur.lastidx();
+ cur.pos() = cur.lastpos();
+ return it;
+}
+
+
+
+
+///////////////////////////////////////////////////////////////////
+//
+// The part below is the non-integrated rest of the original math
+// cursor. This should be either generalized for texted or moved
+// back to the math insets.
+//
+///////////////////////////////////////////////////////////////////
+
+#include "mathed/math_braceinset.h"
+#include "mathed/math_charinset.h"
+#include "mathed/math_commentinset.h"
+#include "mathed/math_factory.h"
+#include "mathed/math_gridinset.h"
+#include "mathed/math_macroarg.h"
+#include "mathed/math_macrotemplate.h"
+#include "mathed/math_mathmlstream.h"
+#include "mathed/math_scriptinset.h"
+#include "mathed/math_spaceinset.h"
+#include "mathed/math_support.h"
+#include "mathed/math_unknowninset.h"
+
+//#define FILEDEBUG 1
+
+
+bool LCursor::isInside(InsetBase const * p)
+{
+ for (unsigned i = 0; i < depth(); ++i)
+ if (cursor_[i].inset() == p)
+ return true;
+ return false;
+}
+
+
+bool LCursor::openable(MathAtom const & t)
+{
+ if (!t->isActive())
+ return false;
+
+ if (t->lock())
+ return false;
+
+ if (!selection())
+ return true;
+
+ // we can't move into anything new during selection
+ if (depth() == anchor_.size())
+ return false;
+ if (t.operator->() != anchor_[depth()].inset())
+ return false;
+
+ return true;
+}
+
+
+bool LCursor::inNucleus()
+{
+ return inset()->asMathInset()->asScriptInset() && idx() == 2;
+}
+
+
+bool LCursor::left()
+{
+ autocorrect() = false;
+ x_target(-1); // "no target"
+ if (inMacroMode()) {
+ macroModeClose();
+ return true;
+ }
+
+ if (pos() != 0 && openable(prevAtom())) {
+ posLeft();
+ push(inset());
+ inset()->idxFirst(*this);
+ return true;
+ }
+
+ return posLeft() || idxLeft() || popLeft() || selection();
+}
+
+
+bool LCursor::right()
+{
+ autocorrect() = false;
+ x_target(-1); // "no target"
+ if (inMacroMode()) {
+ macroModeClose();
+ return true;
+ }
+
+ if (pos() != lastpos() && openable(nextAtom())) {
+ pushLeft(inset());
+ return true;
+ }
+
+ return posRight() || idxRight() || popRight() || selection();
+}
+
+
+bool positionable(CursorBase const & cursor, CursorBase const & anchor)
+{
+ // avoid deeper nested insets when selecting
+ if (cursor.size() > anchor.size())
+ return false;
+
+ // anchor might be deeper, should have same path then
+ for (CursorBase::size_type i = 0; i < cursor.size(); ++i)
+ if (cursor[i].inset() != anchor[i].inset())
+ return false;
+
+ // position should be ok.
+ return true;
+}
+
+
+void LCursor::setScreenPos(int x, int y)
+{
+ bool res = bruteFind(x, y, formula()->xlow(), formula()->xhigh(),
+ formula()->ylow(), formula()->yhigh());
+ if (!res) {
+ // this can happen on creation of "math-display"
+ idx() = 0;
+ pos() = 0;
+ }
+ x_target(-1); // "no target"
+}
+
+
+
+bool LCursor::home()
+{
+ autocorrect() = false;
+ macroModeClose();
+ if (!inset()->idxHome(*this))
+ return popLeft();
+ x_target(-1); // "no target"
+ return true;
+}
+
+
+bool LCursor::end()
+{
+ autocorrect() = false;
+ macroModeClose();
+ if (!inset()->idxEnd(*this))
+ return popRight();
+ x_target(-1); // "no target"
+ return true;
+}
+
+
+void LCursor::plainErase()
+{
+ cell().erase(pos());
+}
+
+
+void LCursor::markInsert()
+{
+ cell().insert(pos(), MathAtom(new MathCharInset(0)));
+}
+
+
+void LCursor::markErase()
+{
+ cell().erase(pos());
+}
+
+
+void LCursor::plainInsert(MathAtom const & t)
+{
+ cell().insert(pos(), t);
+ ++pos();
+}
+
+
+void LCursor::insert2(string const & str)
+{
+ MathArray ar;
+ asArray(str, ar);
+ insert(ar);
+}
+
+
+void LCursor::insert(string const & str)
+{
+ //lyxerr << "inserting '" << str << "'" << endl;
+ selClearOrDel();
+ for (string::const_iterator it = str.begin(); it != str.end(); ++it)
+ plainInsert(MathAtom(new MathCharInset(*it)));
+}
+
+
+void LCursor::insert(char c)
+{
+ //lyxerr << "inserting '" << c << "'" << endl;
+ selClearOrDel();
+ plainInsert(MathAtom(new MathCharInset(c)));
+}
+
+
+void LCursor::insert(MathAtom const & t)
+{
+ macroModeClose();
+ selClearOrDel();
+ plainInsert(t);
+}
+
+
+void LCursor::niceInsert(string const & t)
+{
+ MathArray ar;
+ asArray(t, ar);
+ if (ar.size() == 1)
+ niceInsert(ar[0]);
+ else
+ insert(ar);
+}
+
+
+void LCursor::niceInsert(MathAtom const & t)
+{
+ macroModeClose();
+ string safe = grabAndEraseSelection();
+ plainInsert(t);
+ // enter the new inset and move the contents of the selection if possible
+ if (t->isActive()) {
+ posLeft();
+ pushLeft(inset());
+ paste(safe);
+ }
+}
+
+
+void LCursor::insert(MathArray const & ar)
+{
+ macroModeClose();
+ if (selection())
+ eraseSelection();
+ cell().insert(pos(), ar);
+ pos() += ar.size();
+}
+
+
+bool LCursor::backspace()
+{
+ autocorrect() = false;
+
+ if (selection()) {
+ selDel();
+ return true;
+ }
+
+ if (pos() == 0) {
+ if (inset()->nargs() == 1 && depth() == 1 && lastpos() == 0)
+ return false;
+ pullArg();
+ return true;
+ }
+
+ if (inMacroMode()) {
+ MathUnknownInset * p = activeMacro();
+ if (p->name().size() > 1) {
+ p->setName(p->name().substr(0, p->name().size() - 1));
+ return true;
+ }
+ }
+
+ if (pos() != 0 && prevAtom()->nargs() > 0) {
+ // let's require two backspaces for 'big stuff' and
+ // highlight on the first
+ selection() = true;
+ left();
+ } else {
+ --pos();
+ plainErase();
+ }
+ return true;
+}
+
+
+bool LCursor::erase()
+{
+ autocorrect() = false;
+ if (inMacroMode())
+ return true;
+
+ if (selection()) {
+ selDel();
+ return true;
+ }
+
+ // delete empty cells if possible
+#warning FIXME
+ //if (cell().empty() && inset()->idxDelete(idx()))
+ // return true;
+
+ // special behaviour when in last position of cell
+ if (pos() == lastpos()) {
+ bool one_cell = inset()->nargs() == 1;
+ if (one_cell && depth() == 1 && lastpos() == 0)
+ return false;
+ // remove markup
+ if (one_cell)
+ pullArg();
+ else
+ inset()->idxGlue(idx());
+ return true;
+ }
+
+ if (pos() != lastpos() && inset()->nargs() > 0) {
+ selection() = true;
+ right();
+ } else {
+ plainErase();
+ }
+
+ return true;
+}
+
+
+bool LCursor::up()
+{
+ macroModeClose();
+ CursorBase save = cursor_;
+ if (goUpDown(true))
+ return true;
+ cursor_ = save;
+ autocorrect() = false;
+ return selection();
+}
+
+
+bool LCursor::down()
+{
+ macroModeClose();
+ CursorBase save = cursor_;
+ if (goUpDown(false))
+ return true;
+ cursor_ = save;
+ autocorrect() = false;
+ return selection();
+}
+
+
+void LCursor::macroModeClose()
+{
+ if (!inMacroMode())
+ return;
+ MathUnknownInset * p = activeMacro();
+ p->finalize();
+ string s = p->name();
+ --pos();
+ cell().erase(pos());
+
+ // do nothing if the macro name is empty
+ if (s == "\\")
+ return;
+
+ string const name = s.substr(1);
+
+ // prevent entering of recursive macros
+ if (formula()->lyxCode() == InsetOld::MATHMACRO_CODE
+ && formula()->getInsetName() == name)
+ lyxerr << "can't enter recursive macro" << endl;
+
+ niceInsert(createMathInset(name));
+}
+
+
+string LCursor::macroName()
+{
+ return inMacroMode() ? activeMacro()->name() : string();
+}
+
+
+void LCursor::drawSelection(PainterInfo & pi)
+{
+ if (!selection())
+ return;
+ CursorSlice i1 = selBegin();
+ CursorSlice i2 = selEnd();
+ i1.asMathInset()->drawSelection(pi, i1.idx_, i1.pos_, i2.idx_, i2.pos_);
+}
+
+
+void LCursor::handleNest(MathAtom const & a, int c)
+{
+ MathAtom at = a;
+ asArray(grabAndEraseSelection(), at.nucleus()->cell(c));
+ insert(at);
+ posLeft();
+ pushLeft(inset());
+}
+
+
+void LCursor::getScreenPos(int & x, int & y) const
+{
+ BOOST_ASSERT(inset());
+ BOOST_ASSERT(inset()->asMathInset());
+ inset()->asMathInset()->getScreenPos(idx(), pos(), x, y);
+}
+
+
+int LCursor::targetX() const
+{
+ if (x_target() != -1)
+ return x_target();
+ int x = 0;
+ int y = 0;
+ getScreenPos(x, y);
+ return x;
+}
+
+
+MathHullInset * LCursor::formula() const
+{
+ for (int i = cursor_.size() - 1; i >= 1; --i)
+ if (cursor_[i].inset()->lyxCode() == InsetBase::MATH_CODE)
+ return static_cast<MathHullInset *>(cursor_[i].inset());
+ return 0;
+}
+
+
+void LCursor::adjust(pos_type from, int diff)
+{
+ if (pos() > from)
+ pos() += diff;
+ if (anchor().pos_ > from)
+ anchor().pos_ += diff;
+ // just to be on the safe side
+ // theoretically unecessary
+ normalize();
+}
+
+
+bool LCursor::inMacroMode() const
+{
+ if (!pos() != 0)
+ return false;
+ MathUnknownInset const * p = prevAtom()->asUnknownInset();
+ return p && !p->final();
+}
+
+
+MathUnknownInset * LCursor::activeMacro()
+{
+ return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
+}
+
+
+bool LCursor::inMacroArgMode() const
+{
+ return pos() > 0 && prevAtom()->getChar() == '#';
+}
+
+
+MathGridInset * LCursor::enclosingGrid(idx_type & idx) const
+{
+ for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
+ MathInset * m = cursor_[i].inset()->asMathInset();
+ if (!m)
+ return 0;
+ MathGridInset * p = m->asGridInset();
+ if (p) {
+ idx = cursor_[i].idx_;
+ return p;
+ }
+ }
+ return 0;
+}
+
+
+void LCursor::pullArg()
+{
+#warning look here
+#if 0
+ MathArray ar = cell();
+ if (popLeft()) {
+ plainErase();
+ cell().insert(pos(), ar);
+ resetAnchor();
+ } else {
+ formula()->mutateToText();
+ }
+#endif
+}
+
+
+void LCursor::touch()
+{
+#warning look here
+#if 0
+ CursorBase::const_iterator it = cursor_.begin();
+ CursorBase::const_iterator et = cursor_.end();
+ for ( ; it != et; ++it)
+ it->cell().touch();
+#endif
+}
+
+
+void LCursor::normalize()
+{
+ if (idx() >= nargs()) {
+ lyxerr << "this should not really happen - 1: "
+ << idx() << ' ' << nargs()
+ << " in: " << inset() << endl;
+ }
+ idx() = min(idx(), nargs() - 1);
+
+ if (pos() > lastpos()) {
+ lyxerr << "this should not really happen - 2: "
+ << pos() << ' ' << lastpos() << " in idx: " << idx()
+ << " in atom: '";
+ WriteStream wi(lyxerr, false, true);
+ inset()->asMathInset()->write(wi);
+ lyxerr << endl;
+ }
+ pos() = min(pos(), lastpos());
+}
+
+
+char LCursor::valign()
+{
+ idx_type idx;
+ MathGridInset * p = enclosingGrid(idx);
+ return p ? p->valign() : '\0';
+}
+
+
+char LCursor::halign()
+{
+ idx_type idx;
+ MathGridInset * p = enclosingGrid(idx);
+ return p ? p->halign(idx % p->ncols()) : '\0';
+}
+
+
+bool LCursor::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;
+ getScreenPos(xo, yo);
+
+ // check if we had something else in mind, if not, this is the future goal
+ if (x_target() == -1)
+ x_target(xo);
+ else
+ xo = x_target();
+
+ // try neigbouring script insets
+ if (!selection()) {
+ // try left
+ if (pos() != 0) {
+ MathScriptInset const * p = prevAtom()->asScriptInset();
+ if (p && p->has(up)) {
+ --pos();
+ push(inset());
+ idx() = up; // the superscript has index 1
+ pos() = lastpos();
+ //lyxerr << "updown: handled by scriptinset to the left" << endl;
+ return true;
+ }
+ }
+
+ // try right
+ if (pos() != lastpos()) {
+ MathScriptInset const * p = nextAtom()->asScriptInset();
+ if (p && p->has(up)) {
+ push(inset());
+ idx() = up;
+ pos() = 0;
+ //lyxerr << "updown: handled by scriptinset to the right" << endl;
+ return true;
+ }
+ }
+ }
+
+ // try current cell for e.g. text insets
+ if (inset()->idxUpDown2(*this, up))
+ 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" << endl;
+ // return true;
+ //}
+
+ // try to find an inset that knows better then we
+ while (1) {
+ //lyxerr << "updown: We are in " << inset() << " idx: " << idx() << endl;
+ // ask inset first
+ if (inset()->idxUpDown(*this, up)) {
+ // 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" << endl;
+ 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;
+ getScreenPos(xnew, ynew);
+ if (up ? ynew < yo : ynew > yo)
+ return true;
+ }
+}
+
+
+bool LCursor::bruteFind(int x, int y, int xlow, int xhigh, int ylow, int yhigh)
+{
+ CursorBase best_cursor;
+ double best_dist = 1e10;
+
+ CursorBase it = ibegin(formula());
+ CursorBase et = iend(formula());
+ while (1) {
+ // avoid invalid nesting when selecting
+ if (!selection() || positionable(it, anchor_)) {
+ int xo, yo;
+ it.back().getScreenPos(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;
+ increment(it);
+ }
+
+ if (best_dist < 1e10)
+ cursor_ = best_cursor;
+ return best_dist < 1e10;
+}
+
+
+void LCursor::bruteFind2(int x, int y)
+{
+ double best_dist = 1e10;
+
+ CursorBase it = cursor_;
+ it.back().pos(0);
+ CursorBase et = cursor_;
+ int n = et.back().asMathInset()->cell(et.back().idx_).size();
+ et.back().pos(n);
+ for (int i = 0; ; ++i) {
+ int xo, yo;
+ it.back().getScreenPos(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;
+ increment(it);
+ }
+}
+
+
+bool LCursor::idxLineLast()
+{
+ idx() -= idx() % ncols();
+ idx() += ncols() - 1;
+ pos() = lastpos();
+ return true;
+}
+
+
+bool LCursor::idxLeft()
+{
+ return inset()->idxLeft(*this);
+}
+
+
+bool LCursor::idxRight()
+{
+ return inset()->idxRight(*this);
+}
+
+
+bool LCursor::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
+ inset()->asMathInset()->asScriptInset()->ensure(up);
+ idx() = up;
+ pos() = 0;
+ } else if (pos() != 0 && prevAtom()->asScriptInset()) {
+ prevAtom().nucleus()->asScriptInset()->ensure(up);
+ posLeft();
+ push(inset());
+ idx() = up;
+ pos() = lastpos();
+ } else if (pos() != 0) {
+ --pos();
+ cell()[pos()]
+ = MathAtom(new MathScriptInset(nextAtom(), up));
+ push(inset());
+ idx() = up;
+ pos() = 0;
+ } else {
+ plainInsert(MathAtom(new MathScriptInset(up)));
+ posLeft();
+ nextAtom().nucleus()->asScriptInset()->ensure(up);
+ push(inset());
+ idx() = up;
+ pos() = 0;
+ }
+ paste(safe);
+ return true;
+}
+
+
+bool LCursor::interpret(char c)
+{
+ //lyxerr << "interpret 2: '" << c << "'" << endl;
+ x_target(-1); // "no target"
+ if (inMacroArgMode()) {
+ posLeft();
+ plainErase();
+#warning FIXME
+#if 0
+ int n = c - '0';
+ MathMacroTemplate const * p = formula()->asMacroTemplate();
+ if (p && 1 <= n && n <= p->numargs())
+ insert(MathAtom(new MathMacroArgument(c - '0')));
+ else {
+ insert(createMathInset("#"));
+ interpret(c); // try again
+ }
+#endif
+ return true;
+ }
+
+ // handle macroMode
+ if (inMacroMode()) {
+ string name = macroName();
+ //lyxerr << "interpret name: '" << name << "'" << endl;
+
+ 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" << endl;
+ 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 (!pos() != 0 || prevAtom()->getChar() != ' ')
+ insert(c);
+ return true;
+ }
+ if (pos() != 0 && prevAtom()->asSpaceInset()) {
+ prevAtom().nucleus()->asSpaceInset()->incSpace();
+ return true;
+ }
+ if (popRight())
+ return true;
+ // if are at the very end, leave the formula
+ return pos() != lastpos();
+ }
+
+ if (c == '_') {
+ script(false);
+ return true;
+ }
+
+ if (c == '^') {
+ script(true);
+ return true;
+ }
+
+ if (c == '{' || c == '}' || c == '#' || c == '&' || c == '$') {
+ niceInsert(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 LCursor::lockToggle()
+{
+ if (pos() != lastpos()) {
+ // toggle previous inset ...
+ nextAtom().nucleus()->lock(!nextAtom()->lock());
+ } else if (popLeft() && pos() != lastpos()) {
+ // ... or enclosing inset if we are in the last inset position
+ nextAtom().nucleus()->lock(!nextAtom()->lock());
+ posRight();
+ }
+}
+
+
+CursorSlice LCursor::normalAnchor()
+{
+ if (anchor_.size() < depth()) {
+ resetAnchor();
+ lyxerr << "unusual Anchor size" << endl;
+ }
+ //lyx::BOOST_ASSERT(Anchor_.size() >= cursor.depth());
+ // use Anchor on the same level as Cursor
+ CursorSlice normal = anchor_[depth() - 1];
+#if 0
+ if (depth() < anchor_.size() && !(normal < xx())) {
+ // anchor is behind cursor -> move anchor behind the inset
+ ++normal.pos_;
+ }
+#endif
+ return normal;
+}
+
+
+/*
+DispatchResult dispatch(LCursor & cur, 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: {
+ CursorSlice & pos = cursor_.back();
+ int x = 0;
+ int y = 0;
+ getScreenPos(x, y);
+ if (x < cmd.x && pos() != 0) {
+ DispatchResult const res = prevAtom().nucleus()->dispatch(cmd);
+ if (res.dispatched())
+ return res;
+ }
+ if (x > cmd.x && pos() != lastpos()) {
+ DispatchResult const res = inset()->dispatch(cmd);
+ if (res.dispatched())
+ return res;
+ }
+ }
+ default:
+ break;
+ }
+ /...
+}
+*/
+
+
+void LCursor::handleFont(string const & font)
+{
+ string safe;
+ if (selection()) {
+ macroModeClose();
+ safe = grabAndEraseSelection();
+ }
+
+ if (lastpos() != 0) {
+ // something left in the cell
+ if (pos() == 0) {
+ // cursor in first position
+ popLeft();
+ } else if (pos() == lastpos()) {
+ // cursor in last position
+ popRight();
+ } else {
+ // cursor in between. split cell
+ MathArray::iterator bt = cell().begin();
+ MathAtom at = createMathInset(font);
+ at.nucleus()->cell(0) = MathArray(bt, bt + pos());
+ cell().erase(bt, bt + pos());
+ popLeft();
+ plainInsert(at);
+ }
+ } else {
+ // nothing left in the cell
+ pullArg();
+ plainErase();
+ }
+ insert(safe);
+}
+
+
+void LCursor::releaseMathCursor()
+{
+ if (inMathed())
+ formula()->insetUnlock(bv());
+}
+
+
+bool LCursor::inMathed() const
+{
+ return formula();
+}
projects / features.git / commitdiff