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 < 4; ++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 < 4; ++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)
106 // Special code for the symbol family
107 if (family == LyXFont::SYMBOL_FAMILY){
108 fontinfo[family][series][shape] = new FontInfo("-*-symbol-*");
112 // Normal font. Let's search for an existing name that matches.
116 string norm = lyxrc.font_norm;
119 FontInfo * fi = new FontInfo();
120 fontinfo[family][series][shape] = fi;
122 for (int cfam = 0; cfam < 2; ++cfam) {
123 // Determine family name
125 case LyXFont::ROMAN_FAMILY:
127 case 0: ffamily = lyxrc.roman_font_name; break;
128 case 1: ffamily = "-*-times";
132 case LyXFont::SANS_FAMILY:
134 case 0: ffamily = lyxrc.sans_font_name; break;
135 case 1: ffamily = "-*-helvetica";
139 case LyXFont::TYPEWRITER_FAMILY:
141 case 0: ffamily = lyxrc.typewriter_font_name; break;
142 case 1: ffamily = "-*-courier";
149 for (int cser = 0; cser < 4; ++cser) {
150 // Determine series name
152 case LyXFont::MEDIUM_SERIES:
154 case 0: fseries = "-medium"; break;
155 case 1: fseries = "-book"; break;
156 case 2: fseries = "-light";
160 case LyXFont::BOLD_SERIES:
162 case 0: fseries = "-bold"; break;
163 case 1: fseries = "-black"; break;
164 case 2: fseries = "-demi"; break;
165 case 3: fseries = "-demibold";
172 for (int csha = 0; csha < 2; ++csha) {
173 // Determine shape name
175 case LyXFont::UP_SHAPE:
176 case LyXFont::SMALLCAPS_SHAPE:
178 case 0: fshape = "-r";
182 case LyXFont::ITALIC_SHAPE:
184 case 0: fshape = "-i"; break;
185 case 1: fshape = "-o";
189 case LyXFont::SLANTED_SHAPE:
191 case 0: fshape = "-o"; break;
192 case 1: fshape = "-i";
199 fontname = ffamily + fseries + fshape +
200 "-normal-*-*-*-*-*-*-*-" + norm;
201 fi->setPattern(fontname);
211 // A dummy fontstruct used when there is no gui.
214 XFontStruct dummyXFontStruct;
215 bool dummyXFontStructisGood = false;
220 XFontStruct * FontLoader::doLoad(LyXFont::FONT_FAMILY family,
221 LyXFont::FONT_SERIES series,
222 LyXFont::FONT_SHAPE shape,
223 LyXFont::FONT_SIZE size)
225 if (!lyxrc.use_gui) {
226 if (!dummyXFontStructisGood) {
227 // no character specific info
228 dummyXFontStruct.per_char = 0;
229 // unit ascent on character displays
230 dummyXFontStruct.ascent = 1;
231 // no descent on character displays
232 dummyXFontStruct.descent = 0;
233 dummyXFontStructisGood = true;
236 return &dummyXFontStruct;
239 getFontinfo(family, series, shape);
240 int fsize = int( (lyxrc.font_sizes[size] * lyxrc.dpi *
241 (lyxrc.zoom/100.0) ) / 72.27 + 0.5 );
243 string font = fontinfo[family][series][shape]->getFontname(fsize);
246 lyxerr << "No font matches request. Using 'fixed'." << endl;
247 lyxerr << "Start LyX as 'lyx -dbg 515' to get more information." << endl;
251 XFontStruct * fs = 0;
253 current_view->owner()->messagePush(_("Loading font into X-Server..."));
255 fs = XLoadQueryFont(GUIRunTime::x11Display(), font.c_str());
258 if (font == "fixed") {
259 lyxerr << "We're doomed. Can't get 'fixed' font." << endl;
261 lyxerr << "Could not get font. Using 'fixed'." << endl;
262 fs = XLoadQueryFont(GUIRunTime::x11Display(), "fixed");
264 } else if (lyxerr.debugging(Debug::FONT)) {
265 // Tell user the font matching
271 // The rest of the attributes are not interesting
272 f.setEmph(LyXFont::INHERIT);
273 f.setUnderbar(LyXFont::INHERIT);
274 f.setNoun(LyXFont::INHERIT);
275 f.setColor(LColor::inherit);
276 lyxerr << "Font '" << f.stateText(0)
277 << "' matched by\n" << font << endl;
280 current_view->owner()->messagePop();
282 fontstruct[family][series][shape][size] = fs;