1 /**
2 * \file Context.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
5 *
6 * \author Jean-Marc Lasgouttes
7 *
8 * Full author contact details are available in file CREDITS.
9 */
10
11 #include <config.h>
12
13 #include "Context.h"
14 #include "Layout.h"
15
16 #include "support/lstrings.h"
17
18 #include <iostream>
19
20 using namespace std;
21 using namespace lyx::support;
22
23 namespace lyx {
24
25 namespace {
26
end_layout(ostream & os)27 void end_layout(ostream & os)
28 {
29 os << "\n\\end_layout\n";
30 }
31
32
begin_deeper(ostream & os)33 void begin_deeper(ostream & os)
34 {
35 os << "\n\\begin_deeper";
36 }
37
38
end_deeper(ostream & os)39 void end_deeper(ostream & os)
40 {
41 os << "\n\\end_deeper";
42 }
43
44 } // namespace
45
46
operator ==(TeXFont const & f1,TeXFont const & f2)47 bool operator==(TeXFont const & f1, TeXFont const & f2)
48 {
49 return
50 f1.size == f2.size &&
51 f1.family == f2.family &&
52 f1.series == f2.series &&
53 f1.shape == f2.shape &&
54 f1.language == f2.language;
55 }
56
57
output_font_change(ostream & os,TeXFont const & oldfont,TeXFont const & newfont)58 void output_font_change(ostream & os, TeXFont const & oldfont,
59 TeXFont const & newfont)
60 {
61 if (oldfont.family != newfont.family)
62 os << "\n\\family " << newfont.family << '\n';
63 if (oldfont.series != newfont.series)
64 os << "\n\\series " << newfont.series << '\n';
65 if (oldfont.shape != newfont.shape)
66 os << "\n\\shape " << newfont.shape << '\n';
67 if (oldfont.size != newfont.size)
68 os << "\n\\size " << newfont.size << '\n';
69 if (oldfont.language != newfont.language)
70 os << "\n\\lang " << newfont.language << '\n';
71 }
72
73
74 TeXFont Context::normalfont;
75 bool Context::empty = true;
76
77
Context(bool need_layout_,TeX2LyXDocClass const & textclass_,Layout const * layout_,Layout const * parent_layout_,TeXFont const & font_)78 Context::Context(bool need_layout_,
79 TeX2LyXDocClass const & textclass_,
80 Layout const * layout_, Layout const * parent_layout_,
81 TeXFont const & font_)
82 : need_layout(need_layout_),
83 need_end_layout(false), need_end_deeper(false),
84 has_item(false), deeper_paragraph(false),
85 new_layout_allowed(true), merging_hyphens_allowed(true),
86 textclass(textclass_),
87 layout(layout_), parent_layout(parent_layout_),
88 font(font_)
89 {
90 if (!layout)
91 layout = &textclass.defaultLayout();
92 if (!parent_layout)
93 parent_layout = &textclass.defaultLayout();
94 }
95
96
~Context()97 Context::~Context()
98 {
99 if (!par_extra_stuff.empty())
100 cerr << "Bug: Ignoring par-level extra stuff '"
101 << par_extra_stuff << '\'' << endl;
102 }
103
104
begin_layout(ostream & os,Layout const * const & l)105 void Context::begin_layout(ostream & os, Layout const * const & l)
106 {
107 os << "\n\\begin_layout " << to_utf8(l->name()) << "\n";
108 if (!extra_stuff.empty()) {
109 os << extra_stuff;
110 }
111 if (!par_extra_stuff.empty()) {
112 os << par_extra_stuff;
113 par_extra_stuff.erase();
114 }
115 // FIXME: This is not enough for things like
116 // \\Huge par1 \\par par2
117 // FIXME: If the document language is not english this outputs a
118 // superflous language change. Fortunately this is only file format
119 // bloat and does not change the TeX export of LyX.
120 output_font_change(os, normalfont, font);
121 }
122
123
check_layout(ostream & os)124 void Context::check_layout(ostream & os)
125 {
126 if (need_layout) {
127 check_end_layout(os);
128
129 // are we in a list-like environment?
130 if (layout->isEnvironment()
131 && layout->latextype != LATEX_ENVIRONMENT) {
132 // A list-like environment
133 if (has_item) {
134 // a new item. If we had a standard
135 // paragraph before, we have to end it.
136 if (deeper_paragraph) {
137 end_deeper(os);
138 deeper_paragraph = false;
139 }
140 begin_layout(os, layout);
141 has_item = false;
142 } else {
143 // a standard paragraph in an
144 // enumeration. We have to recognize
145 // that this may require a begin_deeper.
146 if (!deeper_paragraph)
147 begin_deeper(os);
148 begin_layout(os, &textclass.defaultLayout());
149 deeper_paragraph = true;
150 }
151 } else {
152 // No list-like environment
153 begin_layout(os, layout);
154 }
155 need_layout = false;
156 need_end_layout = true;
157 empty = false;
158 }
159 }
160
161
check_end_layout(ostream & os)162 void Context::check_end_layout(ostream & os)
163 {
164 if (need_end_layout) {
165 end_layout(os);
166 need_end_layout = false;
167 }
168 }
169
170
check_deeper(ostream & os)171 void Context::check_deeper(ostream & os)
172 {
173 if (parent_layout->isEnvironment()) {
174 // We start a nested environment.
175 // We need to increase the depth.
176 if (need_end_deeper) {
177 // no need to have \end_deeper \begin_deeper
178 need_end_deeper = false;
179 } else {
180 begin_deeper(os);
181 need_end_deeper = true;
182 }
183 } else
184 check_end_deeper(os);
185 }
186
187
check_end_deeper(ostream & os)188 void Context::check_end_deeper(ostream & os)
189 {
190 if (need_end_deeper) {
191 end_deeper(os);
192 need_end_deeper = false;
193 }
194 if (deeper_paragraph) {
195 end_deeper(os);
196 deeper_paragraph = false;
197 }
198 }
199
200
set_item()201 void Context::set_item()
202 {
203 need_layout = true;
204 has_item = true;
205 }
206
207
new_paragraph(ostream & os)208 void Context::new_paragraph(ostream & os)
209 {
210 check_end_layout(os);
211 need_layout = true;
212 }
213
214
add_extra_stuff(string const & stuff)215 void Context::add_extra_stuff(string const & stuff)
216 {
217 if (!contains(extra_stuff, stuff))
218 extra_stuff += stuff;
219 }
220
221
add_par_extra_stuff(string const & stuff)222 void Context::add_par_extra_stuff(string const & stuff)
223 {
224 if (!contains(par_extra_stuff, stuff))
225 par_extra_stuff += stuff;
226 }
227
228
dump(ostream & os,string const & desc) const229 void Context::dump(ostream & os, string const & desc) const
230 {
231 os << "\n" << desc <<" [";
232 if (need_layout)
233 os << "need_layout ";
234 if (need_end_layout)
235 os << "need_end_layout ";
236 if (need_end_deeper)
237 os << "need_end_deeper ";
238 if (has_item)
239 os << "has_item ";
240 if (deeper_paragraph)
241 os << "deeper_paragraph ";
242 if (new_layout_allowed)
243 os << "new_layout_allowed ";
244 if (merging_hyphens_allowed)
245 os << "merging_hyphens_allowed ";
246 if (!extra_stuff.empty())
247 os << "extrastuff=[" << extra_stuff << "] ";
248 if (!par_extra_stuff.empty())
249 os << "parextrastuff=[" << par_extra_stuff << "] ";
250 if (!list_extra_stuff.empty())
251 os << "listextrastuff=[" << list_extra_stuff << "] ";
252 os << "textclass=" << textclass.name()
253 << " layout=" << to_utf8(layout->name())
254 << " parent_layout=" << to_utf8(parent_layout->name()) << "] font=["
255 << font.size << ' ' << font.family << ' ' << font.series << ' '
256 << font.shape << ']' << endl;
257 }
258
259
260 } // namespace lyx
261