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-*-*-*-*-*-*-*-*-*-*-*-*");
114 case LyXFont::CMR_FAMILY:
115 fontinfo[family][series][shape] =
116 new FontInfo("-*-cmr-medium-*-*-*-*-*-*-*-*-*-*-*");
119 case LyXFont::CMSY_FAMILY:
120 fontinfo[family][series][shape] =
121 new FontInfo("-*-cmsy-*-*-*-*-*-*-*-*-*-*-*-*");
124 case LyXFont::CMM_FAMILY:
125 fontinfo[family][series][shape] =
126 new FontInfo("-*-cmmi-medium-*-*-*-*-*-*-*-*-*-*-*");
129 case LyXFont::CMEX_FAMILY:
130 fontinfo[family][series][shape] =
131 new FontInfo("-*-cmex-*-*-*-*-*-*-*-*-*-*-*-*");
134 case LyXFont::MSA_FAMILY:
135 fontinfo[family][series][shape] =
136 new FontInfo("-*-msam-*-*-*-*-*-*-*-*-*-*-*-*");
139 case LyXFont::MSB_FAMILY:
140 fontinfo[family][series][shape] =
141 new FontInfo("-*-msbm-*-*-*-*-*-*-*-*-*-*-*-*");
149 // Normal font. Let's search for an existing name that matches.
153 string norm = lyxrc.font_norm;
156 FontInfo * fi = new FontInfo();
157 fontinfo[family][series][shape] = fi;
159 for (int cfam = 0; cfam < 2; ++cfam) {
160 // Determine family name
162 case LyXFont::ROMAN_FAMILY:
164 case 0: ffamily = lyxrc.roman_font_name; break;
165 case 1: ffamily = "-*-times";
169 case LyXFont::SANS_FAMILY:
171 case 0: ffamily = lyxrc.sans_font_name; break;
172 case 1: ffamily = "-*-helvetica";
176 case LyXFont::TYPEWRITER_FAMILY:
178 case 0: ffamily = lyxrc.typewriter_font_name; break;
179 case 1: ffamily = "-*-courier";
186 for (int cser = 0; cser < 4; ++cser) {
187 // Determine series name
189 case LyXFont::MEDIUM_SERIES:
191 case 0: fseries = "-medium"; break;
192 case 1: fseries = "-book"; break;
193 case 2: fseries = "-light";
197 case LyXFont::BOLD_SERIES:
199 case 0: fseries = "-bold"; break;
200 case 1: fseries = "-black"; break;
201 case 2: fseries = "-demi"; break;
202 case 3: fseries = "-demibold";
209 for (int csha = 0; csha < 2; ++csha) {
210 // Determine shape name
212 case LyXFont::UP_SHAPE:
213 case LyXFont::SMALLCAPS_SHAPE:
215 case 0: fshape = "-r";
219 case LyXFont::ITALIC_SHAPE:
221 case 0: fshape = "-i"; break;
222 case 1: fshape = "-o";
226 case LyXFont::SLANTED_SHAPE:
228 case 0: fshape = "-o"; break;
229 case 1: fshape = "-i";
236 fontname = ffamily + fseries + fshape +
237 "-normal-*-*-*-*-*-*-*-" + norm;
238 fi->setPattern(fontname);
248 // A dummy fontstruct used when there is no gui.
251 XFontStruct dummyXFontStruct;
252 bool dummyXFontStructisGood = false;
257 XFontStruct * FontLoader::doLoad(LyXFont::FONT_FAMILY family,
258 LyXFont::FONT_SERIES series,
259 LyXFont::FONT_SHAPE shape,
260 LyXFont::FONT_SIZE size)
262 if (!lyxrc.use_gui) {
263 if (!dummyXFontStructisGood) {
264 // no character specific info
265 dummyXFontStruct.per_char = 0;
266 // unit ascent on character displays
267 dummyXFontStruct.ascent = 1;
268 // no descent on character displays
269 dummyXFontStruct.descent = 0;
270 dummyXFontStructisGood = true;
273 return &dummyXFontStruct;
276 getFontinfo(family, series, shape);
277 int fsize = int( (lyxrc.font_sizes[size] * lyxrc.dpi *
278 (lyxrc.zoom/100.0) ) / 72.27 + 0.5 );
280 string font = fontinfo[family][series][shape]->getFontname(fsize);
283 lyxerr << "No font matches request. Using 'fixed'." << endl;
284 lyxerr << "Start LyX as 'lyx -dbg 515' to get more information." << endl;
288 XFontStruct * fs = 0;
290 current_view->owner()->messagePush(_("Loading font into X-Server..."));
292 fs = XLoadQueryFont(GUIRunTime::x11Display(), font.c_str());
295 if (font == "fixed") {
296 lyxerr << "We're doomed. Can't get 'fixed' font." << endl;
298 lyxerr << "Could not get font. Using 'fixed'." << endl;
299 fs = XLoadQueryFont(GUIRunTime::x11Display(), "fixed");
301 } else if (lyxerr.debugging(Debug::FONT)) {
302 // Tell user the font matching
308 // The rest of the attributes are not interesting
309 f.setEmph(LyXFont::INHERIT);
310 f.setUnderbar(LyXFont::INHERIT);
311 f.setNoun(LyXFont::INHERIT);
312 f.setColor(LColor::inherit);
313 lyxerr << "Font '" << f.stateText(0)
314 << "' matched by\n" << font << endl;
317 current_view->owner()->messagePop();
319 fontstruct[family][series][shape][size] = fs;
324 bool FontLoader::available(LyXFont const & f)
329 if (!fontinfo[f.family()][f.series()][f.realShape()])
330 getFontinfo(f.family(), f.series(), f.realShape());
331 return fontinfo[f.family()][f.series()][f.realShape()]
332 ->getFontname(f.size()).size();