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https://git.lyx.org/repos/lyx.git
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9b4a26a252
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@24559 a592a061-630c-0410-9148-cb99ea01b6c8
225 lines
3.6 KiB
C++
225 lines
3.6 KiB
C++
/**
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* \file CursorSlice.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Lars Gullik Bjønnes
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* \author Matthias Ettrich
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* \author André Pönitz
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* \author Jürgen Vigna
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "CursorSlice.h"
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#include "Text.h"
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#include "Paragraph.h"
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#include "support/debug.h"
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#include "insets/Inset.h"
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#include "mathed/InsetMath.h"
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#include "mathed/MathData.h"
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#include "support/lassert.h"
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#include <ostream>
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using namespace std;
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namespace lyx {
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CursorSlice::CursorSlice()
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: inset_(0), idx_(0), pit_(0), pos_(0)
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{}
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CursorSlice::CursorSlice(Inset & p)
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: inset_(&p), idx_(0), pit_(0), pos_(0)
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{
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LASSERT(inset_, /**/);
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}
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MathData & CursorSlice::cell() const
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{
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return inset_->asInsetMath()->cell(idx_);
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}
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Paragraph & CursorSlice::paragraph() const
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{
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return text()->getPar(pit_);
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}
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pos_type CursorSlice::lastpos() const
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{
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LASSERT(inset_, /**/);
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return inset_->asInsetMath() ? cell().size()
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: (text()->empty() ? 0 : paragraph().size());
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}
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pit_type CursorSlice::lastpit() const
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{
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if (inset_->inMathed())
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return 0;
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return text()->paragraphs().size() - 1;
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}
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CursorSlice::row_type CursorSlice::row() const
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{
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LASSERT(asInsetMath(), /**/);
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return asInsetMath()->row(idx_);
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}
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CursorSlice::col_type CursorSlice::col() const
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{
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LASSERT(asInsetMath(), /**/);
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return asInsetMath()->col(idx_);
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}
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void CursorSlice::forwardPos()
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{
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// move on one position if possible
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if (pos_ < lastpos()) {
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//lyxerr << "... next pos" << endl;
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++pos_;
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return;
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}
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// otherwise move on one paragraph if possible
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if (pit_ < lastpit()) {
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//lyxerr << "... next par" << endl;
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++pit_;
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pos_ = 0;
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return;
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}
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// otherwise move on one cell
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//lyxerr << "... next idx" << endl;
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LASSERT(idx_ < nargs(), /**/);
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++idx_;
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pit_ = 0;
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pos_ = 0;
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}
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void CursorSlice::forwardIdx()
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{
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LASSERT(idx_ < nargs(), /**/);
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++idx_;
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pit_ = 0;
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pos_ = 0;
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}
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void CursorSlice::backwardPos()
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{
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if (pos_ != 0) {
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--pos_;
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return;
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}
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if (pit_ != 0) {
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--pit_;
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pos_ = lastpos();
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return;
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}
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if (idx_ != 0) {
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--idx_;
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pit_ = lastpit();
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pos_ = lastpos();
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return;
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}
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LASSERT(false, /**/);
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}
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bool CursorSlice::at_end() const
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{
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return idx_ == lastidx() && pit_ == lastpit() && pos_ == lastpos();
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}
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bool CursorSlice::at_begin() const
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{
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return idx_ == 0 && pit_ == 0 && pos_ == 0;
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}
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bool operator==(CursorSlice const & p, CursorSlice const & q)
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{
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return p.inset_ == q.inset_
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&& p.idx_ == q.idx_
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&& p.pit_ == q.pit_
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&& p.pos_ == q.pos_;
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}
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bool operator!=(CursorSlice const & p, CursorSlice const & q)
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{
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return p.inset_ != q.inset_
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|| p.idx_ != q.idx_
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|| p.pit_ != q.pit_
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|| p.pos_ != q.pos_;
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}
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bool operator<(CursorSlice const & p, CursorSlice const & q)
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{
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if (p.inset_ != q.inset_) {
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LYXERR0("can't compare cursor and anchor in different insets\n"
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<< "p: " << p << '\n' << "q: " << q);
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LASSERT(false, /**/);
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}
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if (p.idx_ != q.idx_)
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return p.idx_ < q.idx_;
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if (p.pit_ != q.pit_)
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return p.pit_ < q.pit_;
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return p.pos_ < q.pos_;
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}
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bool operator>(CursorSlice const & p, CursorSlice const & q)
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{
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return q < p;
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}
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bool operator<=(CursorSlice const & p, CursorSlice const & q)
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{
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return !(q < p);
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}
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ostream & operator<<(ostream & os, CursorSlice const & item)
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{
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return os
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<< "inset: " << (void *)item.inset_
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// << " text: " << item.text()
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<< " idx: " << item.idx_
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<< " par: " << item.pit_
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<< " pos: " << item.pos_
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// << " x: " << item.inset_->x()
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// << " y: " << item.inset_->y()
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;
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}
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} // namespace lyx
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