summaryrefslogtreecommitdiff
path: root/libs/gtkmm2/pango/pangomm/fontmetrics.h
blob: 8b66669f81f6f0bb02d47b657e94a2f3ccd95669 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
// -*- c++ -*-
// Generated by gtkmmproc -- DO NOT MODIFY!
#ifndef _PANGOMM_FONTMETRICS_H
#define _PANGOMM_FONTMETRICS_H

#include <glibmm.h>

/* $Id$ */

/* fontmetrics.h
 *
 * Copyright (C) 1998-1999 The gtkmm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <pango/pango-font.h>


#ifndef DOXYGEN_SHOULD_SKIP_THIS
extern "C" { typedef struct _PangoFontMetrics PangoFontMetrics; }
#endif

namespace Pango
{

/** A Pango::FontMetrics holds the overall metric information for a font (possibly restricted to a script).
 */
class FontMetrics
{
  public:
#ifndef DOXYGEN_SHOULD_SKIP_THIS
  typedef FontMetrics CppObjectType;
  typedef PangoFontMetrics BaseObjectType;

  static GType get_type() G_GNUC_CONST;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */

  FontMetrics();

  explicit FontMetrics(PangoFontMetrics* gobject, bool make_a_copy = true);

  FontMetrics(const FontMetrics& other);
  FontMetrics& operator=(const FontMetrics& other);

  ~FontMetrics();

  void swap(FontMetrics& other);

  ///Provides access to the underlying C instance.
  PangoFontMetrics*       gobj()       { return gobject_; }

  ///Provides access to the underlying C instance.
  const PangoFontMetrics* gobj() const { return gobject_; }

  ///Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs.
  PangoFontMetrics* gobj_copy() const;

protected:
  PangoFontMetrics* gobject_;

private:

  
public:
  
  /** Gets the ascent from a font metrics structure. The ascent is
   * the distance from the baseline to the logical top of a line
   * of text. (The logical top may be above or below the top of the
   * actual drawn ink. It is necessary to lay out the text to figure
   * where the ink will be.)
   * @return The ascent, in pango units. (1 point == Pango::SCALE pango units.).
   */
  int get_ascent() const;
  
  /** Gets the descent from a font metrics structure. The descent is
   * the distance from the baseline to the logical bottom of a line
   * of text. (The logical bottom may be above or below the bottom of the
   * actual drawn ink. It is necessary to lay out the text to figure
   * where the ink will be.)
   * @return The descent, in pango units. (1 point == Pango::SCALE pango units.).
   */
  int get_descent() const;
  
  /** Gets the approximate character width for a font metrics structure.
   * This is merely a representative value useful, for example, for
   * determining the initial size for a window. Actual characters in
   * text will be wider and narrower than this.
   * @return The character width, in pango units. (1 point == Pango::SCALE pango units.).
   */
  int get_approximate_char_width() const;
  
  /** Gets the approximate digit width for a font metrics structure.
   * This is merely a representative value useful, for example, for
   * determining the initial size for a window. Actual digits in
   * text can be wider and narrower than this, though this value
   * is generally somewhat more accurate than the result of
   * pango_font_metrics_get_approximate_digit_width().
   * @return The digit width, in pango units. (1 point == Pango::SCALE pango units.).
   */
  int get_approximate_digit_width() const;

  
  /** Gets the suggested position to draw the underline.
   * The value returned is the distance <em>above</em> the
   * baseline of the top of the underline. Since most fonts have
   * underline positions beneath the baseline, this value is typically
   * negative.
   * @return The suggested underline position, in Pango units.
   * 
   * Since: 1.6.
   */
  int get_underline_position() const;
  
  /** Gets the suggested thickness to draw for the underline.
   * @return The suggested underline thickness, in Pango units.
   * 
   * Since: 1.6.
   */
  int get_underline_thickness() const;
  
  /** Gets the suggested position to draw the strikethrough.
   * The value returned is the distance <em>above</em> the
   * baseline of the top of the strikethrough.
   * @return The suggested strikethrough position, in Pango units.
   * 
   * Since: 1.6.
   */
  int get_strikethrough_position() const;
  
  /** Gets the suggested thickness to draw for the strikethrough.
   * @return The suggested strikethrough thickness, in Pango units.
   * 
   * Since: 1.6.
   */
  int get_strikethrough_thickness() const;


};

} //namespace Pango


namespace Pango
{

/** @relates Pango::FontMetrics
 * @param lhs The left-hand side
 * @param rhs The right-hand side
 */
inline void swap(FontMetrics& lhs, FontMetrics& rhs)
  { lhs.swap(rhs); }

} // namespace Pango

namespace Glib
{

/** @relates Pango::FontMetrics
 * @param object The C instance
 * @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
 * @result A C++ instance that wraps this C instance.
 */
Pango::FontMetrics wrap(PangoFontMetrics* object, bool take_copy = false);

#ifndef DOXYGEN_SHOULD_SKIP_THIS
template <>
class Value<Pango::FontMetrics> : public Glib::Value_Boxed<Pango::FontMetrics>
{};
#endif /* DOXYGEN_SHOULD_SKIP_THIS */

} // namespace Glib

#endif /* _PANGOMM_FONTMETRICS_H */