2 Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
35 /** @file src/subtitle_string.h
36 * @brief SubtitleString class
40 #ifndef LIBDCP_SUBTITLE_STRING_H
41 #define LIBDCP_SUBTITLE_STRING_H
47 #include <boost/optional.hpp>
54 /** @class SubtitleString
55 * @brief A single line of subtitle text with all the associated attributes.
57 class SubtitleString : public Subtitle
60 /** @param font Font ID, or empty to use the default
61 * @param italic true for italic text
62 * @param bold true for bold text
63 * @param underline true for underlined text
64 * @param colour Colour of the text
65 * @param size Size in points as if the screen height is 11 inches, so a 72pt font would be 1/11th of the screen height
66 * @param aspect_adjust greater than 1 to stretch text to be wider, less than 1 to shrink text to be narrower (must be between 0.25 and 4)
67 * @param in start time
68 * @param out finish time
69 * @param h_position Horizontal position as a fraction of the screen width (between 0 and 1) from h_align
70 * @param h_align Horizontal alignment point
71 * @param v_position Vertical position as a fraction of the screen height (between 0 and 1) from v_align
72 * @param v_align Vertical alignment point
73 * @param direction Direction of text
74 * @param text The text to display
75 * @param effect Effect to use
76 * @param effect_colour Colour of the effect
77 * @param fade_up_time Time to fade the text in
78 * @param fade_down_time Time to fade the text out
81 boost::optional<std::string> font,
102 /** @return font ID */
103 boost::optional<std::string> font () const {
107 bool italic () const {
115 bool underline () const {
119 Colour colour () const {
123 std::string text () const {
127 Direction direction () const {
131 Effect effect () const {
135 Colour effect_colour () const {
136 return _effect_colour;
143 int size_in_pixels (int screen_height) const;
145 /** @return Aspect ratio `adjustment' of the font size.
146 * Values greater than 1 widen each character, values less than 1 narrow each character,
147 * and the value must be between 0.25 and 4.
149 float aspect_adjust () const {
150 return _aspect_adjust;
153 void set_font (std::string id) {
158 _font = boost::optional<std::string>();
161 void set_size (int s) {
165 void set_aspect_adjust (float a) {
169 void set_text (std::string t) {
173 void set_colour (Colour c) {
177 void set_effect (Effect e) {
181 void set_effect_colour (Colour c) {
187 boost::optional<std::string> _font;
188 /** true if the text is italic */
190 /** true if the weight is bold, false for normal */
192 /** true to enable underlining, false otherwise */
196 /** Size in points as if the screen height is 11 inches, so a 72pt font
197 * would be 1/11th of the screen height.
200 float _aspect_adjust;
201 Direction _direction;
204 Colour _effect_colour;
207 bool operator== (SubtitleString const & a, SubtitleString const & b);
208 bool operator!= (SubtitleString const & a, SubtitleString const & b);
209 std::ostream& operator<< (std::ostream& s, SubtitleString const & sub);