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102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
// -*- C++ -*-
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/**
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* \file ParagraphMetrics.h
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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 Asger Alstrup
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* \author Lars Gullik Bjønnes
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* \author John Levon
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* \author André Pönitz
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* \author Jürgen Vigna
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* \author Abdelrazak Younes
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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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#ifndef PARAGRAPH_METRICS_H
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#define PARAGRAPH_METRICS_H
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#include "Dimension.h"
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#include "Row.h"
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namespace lyx {
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class BufferView;
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class Paragraph;
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/// Helper class for paragraph metrics.
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class ParagraphMetrics {
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public:
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/// Default constructor (only here for STL containers).
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ParagraphMetrics() {}
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/// The only useful constructor.
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explicit ParagraphMetrics(Paragraph const & par);
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/// Copy operator.
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ParagraphMetrics & operator=(ParagraphMetrics const &);
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void reset(Paragraph const & par);
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///
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Row const & getRow(pos_type pos, bool boundary) const;
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///
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size_t pos2row(pos_type pos) const;
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/// TextMetrics::redoParagraph updates this
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Dimension const & dim() const { return dim_; }
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Dimension & dim() { return dim_; }
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/// total height of paragraph
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int height() const { return dim_.height(); }
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/// total width of paragraph, may differ from workwidth
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int width() const { return dim_.width(); }
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/// ascend of paragraph above baseline
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int ascent() const { return dim_.ascent(); }
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/// descend of paragraph below baseline
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int descent() const { return dim_.descent(); }
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/// Text updates the rows using this access point
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RowList & rows() { return rows_; }
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/// The painter and others use this
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RowList const & rows() const { return rows_; }
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///
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int rightMargin(BufferView const & bv) const;
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///
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Paragraph const & par() const { return *par_; }
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/// dump some information to lyxerr
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void dump() const;
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///
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bool hfillExpansion(Row const & row, pos_type pos) const;
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/// The vertical position of the baseline of the first line of the paragraph
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int position() const;
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void setPosition(int position);
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/// Set position to unknown
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void resetPosition();
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/// Return true when the position of the paragraph is known
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bool hasPosition() const;
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/// The vertical position of the top of the paragraph
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int top() const { return position_ - dim_.ascent(); }
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/// The vertical position of the bottom of the paragraph
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int bottom() const { return position_ + dim_.descent(); }
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///
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int id() const { return id_; }
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private:
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///
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int position_ = 0;
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///
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int id_ = -1;
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///
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mutable RowList rows_;
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/// cached dimensions of paragraph
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Dimension dim_;
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///
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Paragraph const * par_ = nullptr;
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};
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} // namespace lyx
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#endif // PARAGRAPH_METRICS_H
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