1 /* This file is part of
2 * ======================================================
4 * LyX, The Document Processor
6 * Copyright 1997 Asger Alstrup
9 * ====================================================== */
12 #include <cmath> // fabs()
15 #pragma implementation "FontLoader.h"
18 #include "FontLoader.h"
22 #include "lyxrc.h" // lyxrc.font_*
23 #include "BufferView.h"
25 #include "frontends/GUIRunTime.h"
29 extern BufferView * current_view;
32 // The global fontloader
33 FontLoader fontloader;
36 // Initialize font loader
37 FontLoader::FontLoader()
43 // Destroy font loader
44 FontLoader::~FontLoader()
50 // Update fonts after zoom, dpi, font names, or norm change
51 // For now, we just ditch all fonts we have. Later, we should
52 // reuse the ones that are already loaded.
53 void FontLoader::update()
60 void FontLoader::reset()
62 // Clear font infos, font structs and font metrics
63 for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
64 for (int i2 = 0; i2 < 2; ++i2)
65 for (int i3 = 0; i3 < 4; ++i3) {
66 fontinfo[i1][i2][i3] = 0;
67 for (int i4 = 0; i4<10; ++i4) {
68 fontstruct[i1][i2][i3][i4] = 0;
75 void FontLoader::unload()
78 for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
79 for (int i2 = 0; i2 < 2; ++i2)
80 for (int i3 = 0; i3 < 4; ++i3) {
81 if (fontinfo[i1][i2][i3]) {
82 delete fontinfo[i1][i2][i3];
83 fontinfo[i1][i2][i3] = 0;
85 for (int i4 = 0; i4 < 10; ++i4) {
86 if (fontstruct[i1][i2][i3][i4]) {
87 XFreeFont(GUIRunTime::x11Display(), fontstruct[i1][i2][i3][i4]);
88 fontstruct[i1][i2][i3][i4] = 0;
96 /* Takes care of finding which font that can match the given request. Tries
97 different alternatives. */
98 void FontLoader::getFontinfo(LyXFont::FONT_FAMILY family,
99 LyXFont::FONT_SERIES series,
100 LyXFont::FONT_SHAPE shape)
102 // Do we have the font info already?
103 if (fontinfo[family][series][shape] != 0)
109 case LyXFont::SYMBOL_FAMILY:
110 fontinfo[family][series][shape] =
111 new FontInfo("-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific");
114 case LyXFont::CMR_FAMILY:
115 fontinfo[family][series][shape] =
116 new FontInfo("-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*");
119 case LyXFont::CMSY_FAMILY:
120 fontinfo[family][series][shape] =
121 new FontInfo("-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*");
124 case LyXFont::CMM_FAMILY:
125 fontinfo[family][series][shape] =
126 new FontInfo("-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*");
129 case LyXFont::CMEX_FAMILY:
130 fontinfo[family][series][shape] =
131 new FontInfo("-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*");
134 case LyXFont::MSA_FAMILY:
135 fontinfo[family][series][shape] =
136 new FontInfo("-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*");
139 case LyXFont::MSB_FAMILY:
140 fontinfo[family][series][shape] =
141 new FontInfo("-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*");
144 case LyXFont::EUFRAK_FAMILY:
145 fontinfo[family][series][shape] =
146 new FontInfo("-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*");
154 // Normal font. Let's search for an existing name that matches.
158 string norm = lyxrc.font_norm;
161 FontInfo * fi = new FontInfo();
162 fontinfo[family][series][shape] = fi;
164 for (int cfam = 0; cfam < 2; ++cfam) {
165 // Determine family name
167 case LyXFont::ROMAN_FAMILY:
169 case 0: ffamily = lyxrc.roman_font_name; break;
170 case 1: ffamily = "-*-times";
174 case LyXFont::SANS_FAMILY:
176 case 0: ffamily = lyxrc.sans_font_name; break;
177 case 1: ffamily = "-*-helvetica";
181 case LyXFont::TYPEWRITER_FAMILY:
183 case 0: ffamily = lyxrc.typewriter_font_name; break;
184 case 1: ffamily = "-*-courier";
191 for (int cser = 0; cser < 4; ++cser) {
192 // Determine series name
194 case LyXFont::MEDIUM_SERIES:
196 case 0: fseries = "-medium"; break;
197 case 1: fseries = "-book"; break;
198 case 2: fseries = "-light";
202 case LyXFont::BOLD_SERIES:
204 case 0: fseries = "-bold"; break;
205 case 1: fseries = "-black"; break;
206 case 2: fseries = "-demi"; break;
207 case 3: fseries = "-demibold";
214 for (int csha = 0; csha < 2; ++csha) {
215 // Determine shape name
217 case LyXFont::UP_SHAPE:
218 case LyXFont::SMALLCAPS_SHAPE:
220 case 0: fshape = "-r";
224 case LyXFont::ITALIC_SHAPE:
226 case 0: fshape = "-i"; break;
227 case 1: fshape = "-o";
231 case LyXFont::SLANTED_SHAPE:
233 case 0: fshape = "-o"; break;
234 case 1: fshape = "-i";
241 fontname = ffamily + fseries + fshape +
242 "-normal-*-*-*-*-*-*-*-" + norm;
243 fi->setPattern(fontname);
253 // A dummy fontstruct used when there is no gui.
256 XFontStruct dummyXFontStruct;
257 bool dummyXFontStructisGood = false;
262 XFontStruct * FontLoader::doLoad(LyXFont::FONT_FAMILY family,
263 LyXFont::FONT_SERIES series,
264 LyXFont::FONT_SHAPE shape,
265 LyXFont::FONT_SIZE size)
267 if (!lyxrc.use_gui) {
268 if (!dummyXFontStructisGood) {
269 // no character specific info
270 dummyXFontStruct.per_char = 0;
271 // unit ascent on character displays
272 dummyXFontStruct.ascent = 1;
273 // no descent on character displays
274 dummyXFontStruct.descent = 0;
275 dummyXFontStructisGood = true;
278 return &dummyXFontStruct;
281 getFontinfo(family, series, shape);
282 int fsize = int( (lyxrc.font_sizes[size] * lyxrc.dpi *
283 (lyxrc.zoom/100.0) ) / 72.27 + 0.5 );
285 string font = fontinfo[family][series][shape]->getFontname(fsize);
288 lyxerr << "No font matches request. Using 'fixed'." << endl;
289 lyxerr << "Start LyX as 'lyx -dbg 515' to get more information." << endl;
293 XFontStruct * fs = 0;
295 current_view->owner()->messagePush(_("Loading font into X-Server..."));
297 fs = XLoadQueryFont(GUIRunTime::x11Display(), font.c_str());
300 if (font == "fixed") {
301 lyxerr << "We're doomed. Can't get 'fixed' font." << endl;
303 lyxerr << "Could not get font. Using 'fixed'." << endl;
304 fs = XLoadQueryFont(GUIRunTime::x11Display(), "fixed");
306 } else if (lyxerr.debugging(Debug::FONT)) {
307 // Tell user the font matching
313 // The rest of the attributes are not interesting
314 f.setEmph(LyXFont::INHERIT);
315 f.setUnderbar(LyXFont::INHERIT);
316 f.setNoun(LyXFont::INHERIT);
317 f.setColor(LColor::inherit);
318 lyxerr << "Font '" << f.stateText(0)
319 << "' matched by\n" << font << endl;
322 current_view->owner()->messagePop();
324 fontstruct[family][series][shape][size] = fs;
329 bool FontLoader::available(LyXFont const & f)
334 if (!fontinfo[f.family()][f.series()][f.realShape()])
335 getFontinfo(f.family(), f.series(), f.realShape());
336 return fontinfo[f.family()][f.series()][f.realShape()]
337 ->getFontname(f.size()).size();