C++ DocIterator::pit方法代码示例

static bool equal(DocIterator & o, DocIterator & n)
{
	// Explicitly check for this, so we won't call
	// Paragraph::getChar for the last pos.
	bool const o_lastpos = o.pos() == o.lastpos();
	bool const n_lastpos = n.pos() == n.lastpos();
	if (o_lastpos || n_lastpos)
		return o_lastpos && n_lastpos;

	Paragraph const & old_par = o.text()->getPar(o.pit());
	Paragraph const & new_par = n.text()->getPar(n.pit());

	char_type const c_o = old_par.getChar(o.pos());
	char_type const c_n = new_par.getChar(n.pos());
	if (c_o != c_n)
		return false;

	if (old_par.isInset(o.pos())) {
		Inset const * i_o = old_par.getInset(o.pos());
		Inset const * i_n = new_par.getInset(n.pos());

		if (i_o && i_n)
			return equal(i_o, i_n);
	}

	Font fo = old_par.getFontSettings(o.buffer()->params(), o.pos());
	Font fn = new_par.getFontSettings(n.buffer()->params(), n.pos());
	return fo == fn;
}

void InsetText::iterateForToc(DocIterator const & cdit, bool output_active) const
{
	DocIterator dit = cdit;
	Toc & toc = buffer().tocBackend().toc("tableofcontents");

	BufferParams const & bufparams = buffer_->params();
	int const min_toclevel = bufparams.documentClass().min_toclevel();
	// we really should have done this before we got here, but it
	// can't hurt too much to do it again
	bool const doing_output = output_active && producesOutput();

	// For each paragraph, traverse its insets and let them add
	// their toc items
	ParagraphList const & pars = paragraphs();
	pit_type pend = paragraphs().size();
	for (pit_type pit = 0; pit != pend; ++pit) {
		Paragraph const & par = pars[pit];
		dit.pit() = pit;
		// if we find an optarg, we'll save it for use later.
		InsetText const * arginset = 0;
		InsetList::const_iterator it  = par.insetList().begin();
		InsetList::const_iterator end = par.insetList().end();
		for (; it != end; ++it) {
			Inset & inset = *it->inset;
			dit.pos() = it->pos;
			//lyxerr << (void*)&inset << " code: " << inset.lyxCode() << std::endl;
			inset.addToToc(dit, doing_output);
			if (inset.lyxCode() == ARG_CODE)
				arginset = inset.asInsetText();
		}
		// now the toc entry for the paragraph
		int const toclevel = text().getTocLevel(pit);
		if (toclevel != Layout::NOT_IN_TOC && toclevel >= min_toclevel) {
			// insert this into the table of contents
			docstring tocstring;
			int const length = doing_output ? INT_MAX : TOC_ENTRY_LENGTH;
			if (arginset) {
				tocstring = par.labelString();
				if (!tocstring.empty())
					tocstring += ' ';
				arginset->text().forToc(tocstring, length);
			} else
				par.forToc(tocstring, length);
			dit.pos() = 0;
			toc.push_back(TocItem(dit, toclevel - min_toclevel,
				tocstring, doing_output, tocstring));
		}
		
		// And now the list of changes.
		par.addChangesToToc(dit, buffer(), doing_output);
	}
}

void SpellcheckerWidget::Private::setSelection(
	DocIterator const & from, DocIterator const & to) const
{
	BufferView * bv = gv_->documentBufferView();
	DocIterator end = to;

	if (from.pit() != end.pit()) {
		// there are multiple paragraphs in selection 
		Cursor & bvcur = bv->cursor();
		bvcur.setCursor(from);
		bvcur.clearSelection();
		bvcur.setSelection(true);
		bvcur.setCursor(end);
		bvcur.setSelection(true);
	} else {
		// FIXME LFUN
		// If we used a LFUN, dispatch would do all of this for us
		int const size = end.pos() - from.pos();
		bv->putSelectionAt(from, size, false);
	}
	bv->processUpdateFlags(Update::Force | Update::FitCursor);	
}

void InsetText::addToToc(DocIterator const & cdit) const
{
	DocIterator dit = cdit;
	dit.push_back(CursorSlice(const_cast<InsetText &>(*this)));
	Toc & toc = buffer().tocBackend().toc("tableofcontents");

	BufferParams const & bufparams = buffer_->params();
	int const min_toclevel = bufparams.documentClass().min_toclevel();

	// For each paragraph, traverse its insets and let them add
	// their toc items
	ParagraphList const & pars = paragraphs();
	pit_type pend = paragraphs().size();
	for (pit_type pit = 0; pit != pend; ++pit) {
		Paragraph const & par = pars[pit];
		dit.pit() = pit;
		// if we find an optarg, we'll save it for use later.
		InsetText const * arginset = 0;
		InsetList::const_iterator it  = par.insetList().begin();
		InsetList::const_iterator end = par.insetList().end();
		for (; it != end; ++it) {
			Inset & inset = *it->inset;
			dit.pos() = it->pos;
			//lyxerr << (void*)&inset << " code: " << inset.lyxCode() << std::endl;
			inset.addToToc(dit);
			if (inset.lyxCode() == ARG_CODE)
				arginset = inset.asInsetText();
		}
		// now the toc entry for the paragraph
		int const toclevel = par.layout().toclevel;
		if (toclevel != Layout::NOT_IN_TOC && toclevel >= min_toclevel) {
			// insert this into the table of contents
			docstring tocstring;
			if (arginset) {
				tocstring = par.labelString();
				if (!tocstring.empty())
					tocstring += ' ';
				arginset->text().forToc(tocstring, TOC_ENTRY_LENGTH);
			} else
				par.forToc(tocstring, TOC_ENTRY_LENGTH);
			dit.pos() = 0;
			toc.push_back(TocItem(dit, toclevel - min_toclevel,
				tocstring, tocstring));
		}
		
		// And now the list of changes.
		par.addChangesToToc(dit, buffer());
	}
}

void InsetText::iterateForToc(DocIterator const & cdit, bool output_active,
							  UpdateType utype, TocBackend & backend) const
{
	DocIterator dit = cdit;
	// This also ensures that any document has a table of contents
	shared_ptr<Toc> toc = backend.toc("tableofcontents");

	BufferParams const & bufparams = buffer_->params();
	int const min_toclevel = bufparams.documentClass().min_toclevel();
	// we really should have done this before we got here, but it
	// can't hurt too much to do it again
	bool const doing_output = output_active && producesOutput();

	// For each paragraph,
	// * Add a toc item for the paragraph if it is AddToToc--merging adjacent
	//   paragraphs as needed.
	// * Traverse its insets and let them add their toc items
	// * Compute the main table of contents (this is hardcoded)
	// * Add the list of changes
	ParagraphList const & pars = paragraphs();
	pit_type pend = paragraphs().size();
	// Record pairs {start,end} of where a toc item was opened for a paragraph
	// and where it must be closed
	stack<pair<pit_type, pit_type>> addtotoc_stack;

	for (pit_type pit = 0; pit != pend; ++pit) {
		Paragraph const & par = pars[pit];
		dit.pit() = pit;
		dit.pos() = 0;

		// Custom AddToToc in paragraph layouts (i.e. theorems)
		if (par.layout().addToToc() && text().isFirstInSequence(pit)) {
			pit_type end =
				openAddToTocForParagraph(pit, dit, output_active, backend);
			addtotoc_stack.push({pit, end});
		}

		// If we find an InsetArgument that is supposed to provide the TOC caption,
		// we'll save it for use later.
		InsetArgument const * arginset = nullptr;
		for (auto const & table : par.insetList()) {
			dit.pos() = table.pos;
			table.inset->addToToc(dit, doing_output, utype, backend);
			if (InsetArgument const * x = table.inset->asInsetArgument())
				if (x->isTocCaption())
					arginset = x;
		}

		// End custom AddToToc in paragraph layouts
		while (!addtotoc_stack.empty() && addtotoc_stack.top().second == pit) {
			// execute the closing function
			closeAddToTocForParagraph(addtotoc_stack.top().first,
			                          addtotoc_stack.top().second, backend);
			addtotoc_stack.pop();
		}

		// now the toc entry for the paragraph in the main table of contents
		int const toclevel = text().getTocLevel(pit);
		if (toclevel != Layout::NOT_IN_TOC && toclevel >= min_toclevel) {
			// insert this into the table of contents
			docstring tocstring;
			int const length = (doing_output && utype == OutputUpdate) ?
				INT_MAX : TOC_ENTRY_LENGTH;
			if (arginset) {
				tocstring = par.labelString();
				if (!tocstring.empty())
					tocstring += ' ';
				arginset->text().forOutliner(tocstring, length);
			} else
				par.forOutliner(tocstring, length);
			dit.pos() = 0;
			toc->push_back(TocItem(dit, toclevel - min_toclevel,
			                       tocstring, doing_output));
		}

		// And now the list of changes.
		par.addChangesToToc(dit, buffer(), doing_output, backend);
	}
}