lyx_mirror/src/cursor.C

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/**
* \file cursor.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Alejandro Aguilar Sierra
* \author Alfredo Braunstein
* \author Andr<EFBFBD> P<EFBFBD>nitz
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "BufferView.h"
#include "buffer.h"
#include "cursor.h"
#include "coordcache.h"
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
#include "CutAndPaste.h"
#include "debug.h"
#include "dispatchresult.h"
#include "encoding.h"
#include "funcrequest.h"
#include "language.h"
#include "lfuns.h"
#include "lyxfont.h"
#include "lyxfunc.h" // only for setMessage()
#include "lyxrc.h"
#include "lyxrow.h"
#include "lyxtext.h"
#include "paragraph.h"
#include "paragraph_funcs.h"
#include "pariterator.h"
#include "insets/insettabular.h"
#include "insets/insettext.h"
#include "mathed/MathData.h"
#include "mathed/InsetMath.h"
#include "mathed/InsetMathScript.h"
#include "mathed/MathMacroTable.h"
#include "mathed/MathParser.h"
#include "support/limited_stack.h"
#include <boost/assert.hpp>
#include <boost/bind.hpp>
#include <boost/current_function.hpp>
#include <sstream>
#include <limits>
namespace lyx {
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
using std::string;
using std::vector;
using std::endl;
#ifndef CXX_GLOBAL_CSTD
using std::isalpha;
#endif
using std::min;
using std::for_each;
namespace {
bool
positionable(DocIterator const & cursor, DocIterator const & anchor)
{
// avoid deeper nested insets when selecting
if (cursor.depth() > anchor.depth())
return false;
// anchor might be deeper, should have same path then
for (size_t i = 0; i < cursor.depth(); ++i)
if (&cursor[i].inset() != &anchor[i].inset())
return false;
// position should be ok.
return true;
}
// Find position closest to (x, y) in cell given by iter.
// Used only in mathed
DocIterator bruteFind2(LCursor const & c, int x, int y)
{
double best_dist = std::numeric_limits<double>::max();
DocIterator result;
DocIterator it = c;
it.top().pos() = 0;
DocIterator et = c;
et.top().pos() = et.top().asInsetMath()->cell(et.top().idx()).size();
for (size_t i = 0; ; ++i) {
int xo;
int yo;
InsetBase const * inset = &it.inset();
Point o = c.bv().coordCache().getInsets().xy(inset);
inset->cursorPos(c.bv(), it.top(), c.boundary(), xo, yo);
// Convert to absolute
xo += o.x_;
yo += o.y_;
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[Debug::DEBUG] << "i: " << i << " d: " << d
<< " best: " << best_dist << endl;
if (d <= best_dist) {
best_dist = d;
result = it;
}
if (it == et)
break;
it.forwardPos();
}
return result;
}
/// moves position closest to (x, y) in given box
bool bruteFind(LCursor & cursor,
int x, int y, int xlow, int xhigh, int ylow, int yhigh)
{
BOOST_ASSERT(!cursor.empty());
InsetBase & inset = cursor[0].inset();
BufferView & bv = cursor.bv();
CoordCache::InnerParPosCache const & cache =
bv.coordCache().getParPos().find(cursor.bottom().text())->second;
// Get an iterator on the first paragraph in the cache
DocIterator it(inset);
it.push_back(CursorSlice(inset));
it.pit() = cache.begin()->first;
// Get an iterator after the last paragraph in the cache
DocIterator et(inset);
et.push_back(CursorSlice(inset));
et.pit() = boost::prior(cache.end())->first;
if (et.pit() >= et.lastpit())
et = doc_iterator_end(inset);
else
++et.pit();
double best_dist = std::numeric_limits<double>::max();;
DocIterator best_cursor = et;
for ( ; it != et; it.forwardPos(true)) {
// avoid invalid nesting when selecting
if (!cursor.selection() || positionable(it, cursor.anchor_)) {
Point p = bv_funcs::getPos(bv, it, false);
int xo = p.x_;
int yo = p.y_;
if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
double const dx = xo - x;
double const dy = yo - y;
double const d = dx * dx + dy * dy;
// '<=' 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) {
// lyxerr << "*" << endl;
best_dist = d;
best_cursor = it;
}
}
}
}
if (best_cursor != et) {
cursor.setCursor(best_cursor);
return true;
}
return false;
}
/// moves position closest to (x, y) in given box
bool bruteFind3(LCursor & cur, int x, int y, bool up)
{
BufferView & bv = cur.bv();
int ylow = up ? 0 : y + 1;
int yhigh = up ? y - 1 : bv.workHeight();
int xlow = 0;
int xhigh = bv.workWidth();
// FIXME: bit more work needed to get 'from' and 'to' right.
pit_type from = cur.bottom().pit();
//pit_type to = cur.bottom().pit();
//lyxerr << "Pit start: " << from << endl;
//lyxerr << "bruteFind3: x: " << x << " y: " << y
// << " xlow: " << xlow << " xhigh: " << xhigh
// << " ylow: " << ylow << " yhigh: " << yhigh
// << endl;
InsetBase & inset = bv.buffer()->inset();
DocIterator it = doc_iterator_begin(inset);
it.pit() = from;
DocIterator et = doc_iterator_end(inset);
double best_dist = std::numeric_limits<double>::max();
DocIterator best_cursor = et;
for ( ; it != et; it.forwardPos()) {
// avoid invalid nesting when selecting
if (bv_funcs::status(&bv, it) == bv_funcs::CUR_INSIDE
&& (!cur.selection() || positionable(it, cur.anchor_))) {
Point p = bv_funcs::getPos(bv, it, false);
int xo = p.x_;
int yo = p.y_;
if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
double const dx = xo - x;
double const dy = yo - y;
double const d = dx * dx + dy * dy;
//lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
// << " dx: " << dx << " dy: " << dy
// << " idx: " << it.idx() << " pos: " << it.pos()
// << " it:\n" << it
// << 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) {
//lyxerr << "*" << endl;
best_dist = d;
best_cursor = it;
}
}
}
}
//lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
if (best_cursor == et)
return false;
cur.setCursor(best_cursor);
return true;
}
} // namespace anon
// be careful: this is called from the bv's constructor, too, so
// bv functions are not yet available!
LCursor::LCursor(BufferView & bv)
: DocIterator(), bv_(&bv), anchor_(), x_target_(-1),
selection_(false), mark_(false), logicalpos_(false)
{}
void LCursor::reset(InsetBase & inset)
{
clear();
push_back(CursorSlice(inset));
anchor_ = DocIterator(inset);
clearTargetX();
selection_ = false;
mark_ = false;
}
// this (intentionally) does neither touch anchor nor selection status
void LCursor::setCursor(DocIterator const & cur)
{
DocIterator::operator=(cur);
}
void LCursor::dispatch(FuncRequest const & cmd0)
{
lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
<< " cmd: " << cmd0 << '\n'
<< *this << endl;
if (empty())
return;
fixIfBroken();
FuncRequest cmd = cmd0;
LCursor safe = *this;
for (; depth(); pop()) {
lyxerr[Debug::DEBUG] << "LCursor::dispatch: cmd: "
<< cmd0 << endl << *this << endl;
BOOST_ASSERT(pos() <= lastpos());
BOOST_ASSERT(idx() <= lastidx());
BOOST_ASSERT(pit() <= lastpit());
// The common case is 'LFUN handled, need update', so make the
// LFUN handler's life easier by assuming this as default value.
// The handler can reset the update and val flags if necessary.
disp_.update(Update::FitCursor | Update::Force);
disp_.dispatched(true);
inset().dispatch(*this, cmd);
if (disp_.dispatched())
break;
}
// it completely to get a 'bomb early' behaviour in case this
// object will be used again.
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
if (!disp_.dispatched()) {
lyxerr[Debug::DEBUG] << "RESTORING OLD CURSOR!" << endl;
operator=(safe);
disp_.update(Update::None);
disp_.dispatched(false);
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
}
}
DispatchResult LCursor::result() const
{
return disp_;
}
BufferView & LCursor::bv() const
{
BOOST_ASSERT(bv_);
return *bv_;
}
Buffer & LCursor::buffer() const
{
BOOST_ASSERT(bv_);
BOOST_ASSERT(bv_->buffer());
return *bv_->buffer();
}
void LCursor::pop()
{
BOOST_ASSERT(depth() >= 1);
pop_back();
}
void LCursor::push(InsetBase & p)
{
push_back(CursorSlice(p));
}
void LCursor::pushLeft(InsetBase & p)
{
BOOST_ASSERT(!empty());
//lyxerr << "Entering inset " << t << " left" << endl;
push(p);
p.idxFirst(*this);
}
bool LCursor::popLeft()
{
BOOST_ASSERT(!empty());
//lyxerr << "Leaving inset to the left" << endl;
inset().notifyCursorLeaves(*this);
if (depth() == 1)
return false;
pop();
return true;
}
bool LCursor::popRight()
{
BOOST_ASSERT(!empty());
//lyxerr << "Leaving inset to the right" << endl;
inset().notifyCursorLeaves(*this);
if (depth() == 1)
return false;
pop();
++pos();
return true;
}
int LCursor::currentMode()
{
BOOST_ASSERT(!empty());
for (int i = depth() - 1; i >= 0; --i) {
int res = operator[](i).inset().currentMode();
if (res != InsetBase::UNDECIDED_MODE)
return res;
}
return InsetBase::TEXT_MODE;
}
void LCursor::getPos(int & x, int & y) const
{
Point p = bv_funcs::getPos(bv(), *this, boundary());
x = p.x_;
y = p.y_;
}
void LCursor::resetAnchor()
{
anchor_ = *this;
}
bool LCursor::posLeft()
{
if (pos() == 0)
return false;
--pos();
return true;
}
bool LCursor::posRight()
{
if (pos() == lastpos())
return false;
++pos();
return true;
}
CursorSlice LCursor::anchor() const
{
BOOST_ASSERT(anchor_.depth() >= depth());
CursorSlice normal = anchor_[depth() - 1];
if (depth() < anchor_.depth() && top() <= normal) {
// anchor is behind cursor -> move anchor behind the inset
++normal.pos();
}
return normal;
}
CursorSlice LCursor::selBegin() const
{
if (!selection())
return top();
return anchor() < top() ? anchor() : top();
}
CursorSlice LCursor::selEnd() const
{
if (!selection())
return top();
return anchor() > top() ? anchor() : top();
}
DocIterator LCursor::selectionBegin() const
{
if (!selection())
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
return *this;
DocIterator di = (anchor() < top() ? anchor_ : *this);
di.resize(depth());
return di;
}
DocIterator LCursor::selectionEnd() const
{
if (!selection())
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
return *this;
DocIterator di = (anchor() > top() ? anchor_ : *this);
if (di.depth() > depth()) {
di.resize(depth());
++di.pos();
}
return di;
}
void LCursor::setSelection()
{
selection() = true;
// A selection with no contents is not a selection
#ifdef WITH_WARNINGS
#warning doesnt look ok
#endif
if (pit() == anchor().pit() && pos() == anchor().pos())
selection() = false;
}
void LCursor::setSelection(DocIterator const & where, int n)
{
setCursor(where);
selection() = true;
anchor_ = where;
pos() += n;
}
void LCursor::clearSelection()
{
selection() = false;
mark() = false;
resetAnchor();
}
int & LCursor::x_target()
{
return x_target_;
}
int LCursor::x_target() const
{
return x_target_;
}
void LCursor::clearTargetX()
{
x_target_ = -1;
}
void LCursor::info(odocstream & os) const
{
for (int i = 1, n = depth(); i < n; ++i) {
operator[](i).inset().infoize(os);
os << " ";
}
if (pos() != 0)
prevInset()->infoize2(os);
// overwite old message
os << " ";
}
bool LCursor::selHandle(bool sel)
{
//lyxerr << "LCursor::selHandle" << endl;
if (sel == selection())
return false;
resetAnchor();
selection() = sel;
return true;
}
std::ostream & operator<<(std::ostream & os, LCursor const & cur)
{
os << "\n cursor: | anchor:\n";
for (size_t i = 0, n = cur.depth(); i != n; ++i) {
os << " " << cur[i] << " | ";
if (i < cur.anchor_.depth())
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
os << cur.anchor_[i];
else
os << "-------------------------------";
os << "\n";
}
for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
os << "------------------------------- | " << cur.anchor_[i] << "\n";
}
os << " selection: " << cur.selection_
<< " x_target: " << cur.x_target_ << endl;
return os;
}
} // namespace lyx
///////////////////////////////////////////////////////////////////
//
// The part below is the non-integrated rest of the original math
// cursor. This should be either generalized for texted or moved
// back to mathed (in most cases to InsetMathNest).
//
///////////////////////////////////////////////////////////////////
#include "mathed/InsetMathChar.h"
#include "mathed/InsetMathGrid.h"
#include "mathed/InsetMathScript.h"
#include "mathed/InsetMathUnknown.h"
#include "mathed/MathFactory.h"
#include "mathed/MathMacroArgument.h"
#include "mathed/MathStream.h"
#include "mathed/MathSupport.h"
namespace lyx {
//#define FILEDEBUG 1
bool LCursor::isInside(InsetBase const * p)
{
for (size_t i = 0; i != depth(); ++i)
if (&operator[](i).inset() == p)
return true;
return false;
}
void LCursor::leaveInset(InsetBase const & inset)
{
for (size_t i = 0; i != depth(); ++i) {
if (&operator[](i).inset() == &inset) {
resize(i);
return;
}
}
}
bool LCursor::openable(MathAtom const & t) const
{
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_.depth())
return false;
if (!ptr_cmp(t.nucleus(), &anchor_[depth()].inset()))
return false;
return true;
}
void LCursor::setScreenPos(int x, int y)
{
x_target() = x;
bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
}
void LCursor::plainErase()
{
cell().erase(pos());
}
void LCursor::markInsert()
{
insert(char_type(0));
}
void LCursor::markErase()
{
cell().erase(pos());
}
void LCursor::plainInsert(MathAtom const & t)
{
cell().insert(pos(), t);
++pos();
}
void LCursor::insert(docstring const & str)
{
for_each(str.begin(), str.end(),
boost::bind(static_cast<void(LCursor::*)(char_type)>
(&LCursor::insert), this, _1));
}
void LCursor::insert(char_type c)
{
//lyxerr << "LCursor::insert char '" << c << "'" << endl;
BOOST_ASSERT(!empty());
if (inMathed()) {
cap::selClearOrDel(*this);
insert(new InsetMathChar(c));
} else {
text()->insertChar(*this, c);
}
}
void LCursor::insert(MathAtom const & t)
{
//lyxerr << "LCursor::insert MathAtom '" << t << "'" << endl;
macroModeClose();
cap::selClearOrDel(*this);
plainInsert(t);
}
void LCursor::insert(InsetBase * inset)
{
if (inMathed())
insert(MathAtom(inset));
else
text()->insertInset(*this, inset);
}
void LCursor::niceInsert(docstring const & t)
{
MathArray ar;
asArray(t, ar);
if (ar.size() == 1)
niceInsert(ar[0]);
else
insert(ar);
}
void LCursor::niceInsert(MathAtom const & t)
{
macroModeClose();
docstring const safe = cap::grabAndEraseSelection(*this);
plainInsert(t);
// enter the new inset and move the contents of the selection if possible
if (t->isActive()) {
posLeft();
// be careful here: don't use 'pushLeft(t)' as this we need to
// push the clone, not the original
pushLeft(*nextInset());
// We may not use niceInsert here (recursion)
MathArray ar;
asArray(safe, ar);
insert(ar);
}
}
void LCursor::insert(MathArray const & ar)
{
macroModeClose();
if (selection())
cap::eraseSelection(*this);
cell().insert(pos(), ar);
pos() += ar.size();
}
bool LCursor::backspace()
{
autocorrect() = false;
if (selection()) {
cap::selDel(*this);
return true;
}
if (pos() == 0) {
if (inset().nargs() == 1 && depth() == 1 && lastpos() == 0)
return false;
pullArg();
return true;
}
if (inMacroMode()) {
InsetMathUnknown * 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
resetAnchor();
selection() = true;
--pos();
} else {
--pos();
plainErase();
}
return true;
}
bool LCursor::erase()
{
autocorrect() = false;
if (inMacroMode())
return true;
if (selection()) {
cap::selDel(*this);
return true;
}
// delete empty cells if possible
if (pos() == lastpos() && 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;
}
// 'clever' UI hack: only erase large items if previously slected
if (pos() != lastpos() && nextAtom()->nargs() > 0) {
resetAnchor();
selection() = true;
++pos();
} else {
plainErase();
}
return true;
}
bool LCursor::up()
{
macroModeClose();
DocIterator save = *this;
if (goUpDown(true))
return true;
setCursor(save);
autocorrect() = false;
return selection();
}
bool LCursor::down()
{
macroModeClose();
DocIterator save = *this;
if (goUpDown(false))
return true;
setCursor(save);
autocorrect() = false;
return selection();
}
bool LCursor::macroModeClose()
{
if (!inMacroMode())
return false;
InsetMathUnknown * p = activeMacro();
p->finalize();
docstring const s = p->name();
--pos();
cell().erase(pos());
// do nothing if the macro name is empty
if (s == "\\")
return false;
// prevent entering of recursive macros
// FIXME: this is only a weak attempt... only prevents immediate
// recursion
docstring const name = s.substr(1);
InsetBase const * macro = innerInsetOfType(InsetBase::MATHMACRO_CODE);
if (macro && macro->getInsetName() == name)
lyxerr << "can't enter recursive macro" << endl;
InsetMathNest * const in = inset().asInsetMath()->asNestInset();
if (in && in->interpretString(*this, s))
return true;
plainInsert(createInsetMath(name));
return true;
}
docstring LCursor::macroName()
{
return inMacroMode() ? activeMacro()->name() : docstring();
}
void LCursor::handleNest(MathAtom const & a, int c)
{
//lyxerr << "LCursor::handleNest: " << c << endl;
MathAtom t = a;
asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
insert(t);
posLeft();
pushLeft(*nextInset());
}
int LCursor::targetX() const
{
if (x_target() != -1)
return x_target();
int x = 0;
int y = 0;
getPos(x, y);
return x;
}
void LCursor::setTargetX()
{
// For now this is good enough. A better solution would be to
// avoid this rebreak by setting cursorX only after drawing
bottom().text()->redoParagraph(bv(), bottom().pit());
int x;
int y;
getPos(x, y);
x_target_ = x;
}
bool LCursor::inMacroMode() const
{
if (pos() == 0)
return false;
InsetMathUnknown const * p = prevAtom()->asUnknownInset();
return p && !p->final();
}
InsetMathUnknown * LCursor::activeMacro()
{
return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
}
void LCursor::pullArg()
{
#ifdef WITH_WARNINGS
#warning Look here
#endif
MathArray ar = cell();
if (popLeft() && inMathed()) {
plainErase();
cell().insert(pos(), ar);
resetAnchor();
} else {
//formula()->mutateToText();
}
}
void LCursor::touch()
{
#ifdef WITH_WARNINGS
#warning look here
#endif
#if 0
DocIterator::const_iterator it = begin();
DocIterator::const_iterator et = end();
for ( ; it != et; ++it)
it->cell().touch();
#endif
}
void LCursor::normalize()
{
if (idx() > lastidx()) {
lyxerr << "this should not really happen - 1: "
<< idx() << ' ' << nargs()
<< " in: " << &inset() << endl;
idx() = lastidx();
}
if (pos() > lastpos()) {
lyxerr << "this should not really happen - 2: "
<< pos() << ' ' << lastpos() << " in idx: " << idx()
<< " in atom: '";
odocstringstream os;
WriteStream wi(os, false, true);
inset().asInsetMath()->write(wi);
lyxerr << to_utf8(os.str()) << endl;
pos() = lastpos();
}
}
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 think 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
// target
if (x_target() == -1)
x_target() = xo;
else
xo = x_target();
// try neigbouring script insets
if (!selection()) {
// try left
if (pos() != 0) {
InsetMathScript const * p = prevAtom()->asScriptInset();
if (p && p->has(up)) {
--pos();
push(*const_cast<InsetMathScript*>(p));
idx() = p->idxOfScript(up);
pos() = lastpos();
return true;
}
}
// try right
if (pos() != lastpos()) {
InsetMathScript const * p = nextAtom()->asScriptInset();
if (p && p->has(up)) {
push(*const_cast<InsetMathScript*>(p));
idx() = p->idxOfScript(up);
pos() = 0;
return true;
}
}
}
// FIXME: Switch this on for more robust movement
#if 0
return bruteFind3(*this, xo, yo, up);
#else
//xarray().boundingBox(xlow, xhigh, ylow, yhigh);
//if (up)
// yhigh = yo - 4;
//else
// ylow = yo + 4;
//if (bruteFind(*this, 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 (true) {
//lyxerr << "updown: We are in " << &inset() << " idx: " << idx() << endl;
// ask inset first
if (inset().idxUpDown(*this, up)) {
//lyxerr << "idxUpDown triggered" << endl;
// try to find best position within this inset
if (!selection())
setCursor(bruteFind2(*this, xo, yo));
return true;
}
// no such inset found, just take something "above"
if (!popLeft()) {
//lyxerr << "updown: popleft failed (strange case)" << endl;
int ylow = up ? 0 : yo + 1;
int yhigh = up ? yo - 1 : bv().workHeight();
return bruteFind(*this, xo, yo, 0, bv().workWidth(), ylow, yhigh);
}
// any improvement so far?
//lyxerr << "updown: popLeft succeeded" << endl;
int xnew;
int ynew;
getPos(xnew, ynew);
if (up ? ynew < yo : ynew > yo)
return true;
}
// we should not come here.
BOOST_ASSERT(false);
#endif
}
void LCursor::handleFont(string const & font)
{
lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << ": " << font << endl;
docstring safe;
if (selection()) {
macroModeClose();
safe = cap::grabAndEraseSelection(*this);
}
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 = createInsetMath(from_utf8(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::message(docstring const & msg) const
{
theLyXFunc().setMessage(msg);
}
void LCursor::errorMessage(docstring const & msg) const
{
theLyXFunc().setErrorMessage(msg);
}
docstring LCursor::selectionAsString(bool label) const
{
if (!selection())
return docstring();
if (inTexted()) {
Buffer const & buffer = *bv().buffer();
ParagraphList const & pars = text()->paragraphs();
// should be const ...
pit_type startpit = selBegin().pit();
pit_type endpit = selEnd().pit();
size_t const startpos = selBegin().pos();
size_t const endpos = selEnd().pos();
if (startpit == endpit)
return pars[startpit].asString(buffer, startpos, endpos, label);
// First paragraph in selection
docstring result = pars[startpit].
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
asString(buffer, startpos, pars[startpit].size(), label) + "\n\n";
// The paragraphs in between (if any)
for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
Paragraph const & par = pars[pit];
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
result += par.asString(buffer, 0, par.size(), label) + "\n\n";
}
// Last paragraph in selection
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
result += pars[endpit].asString(buffer, 0, endpos, label);
return result;
}
if (inMathed())
return cap::grabSelection(*this);
return docstring();
}
string LCursor::currentState()
{
if (inMathed()) {
odocstringstream os;
info(os);
return to_utf8(os.str());
}
if (inTexted())
return text()->currentState(*this);
return string();
}
string LCursor::getPossibleLabel()
{
return inMathed() ? "eq:" : text()->getPossibleLabel(*this);
}
Encoding const * LCursor::getEncoding() const
{
if (empty())
return 0;
if (!bv().buffer())
return 0;
int s = 0;
// go up until first non-0 text is hit
// (innermost text is 0 in mathed)
for (s = depth() - 1; s >= 0; --s)
if (operator[](s).text())
break;
CursorSlice const & sl = operator[](s);
LyXText const & text = *sl.text();
LyXFont font = text.getPar(sl.pit()).getFont(
bv().buffer()->params(), sl.pos(), outerFont(sl.pit(), text.paragraphs()));
return font.language()->encoding();
}
void LCursor::undispatched()
{
disp_.dispatched(false);
}
void LCursor::dispatched()
{
disp_.dispatched(true);
}
void LCursor::updateFlags(Update::flags f)
{
disp_.update(f);
}
void LCursor::noUpdate()
{
disp_.update(Update::None);
}
LyXFont LCursor::getFont() const
{
// HACK. far from being perfect...
int s = 0;
// go up until first non-0 text is hit
// (innermost text is 0 in mathed)
for (s = depth() - 1; s >= 0; --s)
if (operator[](s).text())
break;
CursorSlice const & sl = operator[](s);
LyXText const & text = *sl.text();
LyXFont font = text.getPar(sl.pit()).getFont(
bv().buffer()->params(),
sl.pos(),
outerFont(sl.pit(), text.paragraphs()));
return font;
}
void LCursor::fixIfBroken()
{
// find out last good level
LCursor copy = *this;
size_t newdepth = depth();
while (!copy.empty()) {
if (copy.idx() > copy.lastidx()) {
lyxerr << "wrong idx " << copy.idx()
<< ", max is " << copy.lastidx()
<< " at level " << copy.depth()
<< ". Trying to correct this." << endl;
newdepth = copy.depth() - 1;
}
else if (copy.pit() > copy.lastpit()) {
lyxerr << "wrong pit " << copy.pit()
<< ", max is " << copy.lastpit()
<< " at level " << copy.depth()
<< ". Trying to correct this." << endl;
newdepth = copy.depth() - 1;
}
else if (copy.pos() > copy.lastpos()) {
lyxerr << "wrong pos " << copy.pos()
<< ", max is " << copy.lastpos()
<< " at level " << copy.depth()
<< ". Trying to correct this." << endl;
newdepth = copy.depth() - 1;
}
copy.pop();
}
// shrink cursor to a size where everything is valid, possibly
// leaving insets
while (depth() > newdepth) {
pop();
lyxerr << "correcting cursor to level " << depth() << endl;
}
}
} // namespace lyx