3 * \file ParagraphMetrics.h
4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Asger Alstrup
8 * \author Lars Gullik Bjønnes
10 * \author André Pönitz
11 * \author Jürgen Vigna
12 * \author Abdelrazak Younes
14 * Full author contact details are available in file CREDITS.
17 #ifndef PARAGRAPH_METRICS_H
18 #define PARAGRAPH_METRICS_H
20 #include "Dimension.h"
21 #include "Paragraph.h"
27 * Each paragraph is broken up into a number of rows on the screen.
28 * This is a list of such on-screen rows, ordered from the top row
31 typedef std::vector<Row> RowList;
36 /// Helper class for Paragraph Metrics.
37 class ParagraphMetrics {
39 /// Default constructor (only here for STL containers).
40 ParagraphMetrics(): par_(0) {};
41 /// The only useful constructor.
42 ParagraphMetrics(Paragraph const & par);
45 ParagraphMetrics & operator=(ParagraphMetrics const &);
47 void reset(Paragraph const & par);
50 Row & getRow(pos_type pos, bool boundary);
52 Row const & getRow(pos_type pos, bool boundary) const;
54 size_t pos2row(pos_type pos) const;
56 /// BufferView::redoParagraph updates this
57 Dimension const & dim() const { return dim_; }
58 Dimension & dim() { return dim_; }
59 /// total height of paragraph
60 int height() const { return dim_.height(); }
61 /// total width of paragraph, may differ from workwidth
62 int width() const { return dim_.width(); }
63 /// ascend of paragraph above baseline
64 int ascent() const { return dim_.ascent(); }
65 /// descend of paragraph below baseline
66 int descent() const { return dim_.descent(); }
67 /// Text updates the rows using this access point
68 RowList & rows() { return rows_; }
69 /// The painter and others use this
70 RowList const & rows() const { return rows_; }
72 int rightMargin(Buffer const & buffer) const;
74 int singleWidth(pos_type pos, Font const & Font) const;
76 /// dump some information to lyxerr
80 bool hfillExpansion(Row const & row, pos_type pos) const;
83 void computeRowSignature(Row &, BufferParams const & bparams);
86 int position() const { return position_; }
87 void setPosition(int position);
94 mutable RowList rows_;
95 /// cached dimensions of paragraph
98 Paragraph const * par_;
103 #endif // PARAGRAPH_METRICS_H