lyx_mirror/src/frontends/xforms/xfont_loader.C

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/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright 1997 Asger Alstrup
* and the LyX Team.
*
* ====================================================== */
#include <config.h>
#include <cmath> // fabs()
#ifdef __GNUG__
#pragma implementation
#endif
#include "xfont_loader.h"
#include "FontInfo.h"
#include "gettext.h"
#include "debug.h"
#include "lyxrc.h" // lyxrc.font_*
#include "BufferView.h"
#include "frontends/LyXView.h"
#include "frontends/GUIRunTime.h"
using std::endl;
extern BufferView * current_view;
// The global fontloader
FontLoader fontloader;
// Initialize font loader
FontLoader::FontLoader()
{
reset();
}
// Destroy font loader
FontLoader::~FontLoader()
{
unload();
}
// Update fonts after zoom, dpi, font names, or norm change
// For now, we just ditch all fonts we have. Later, we should
// reuse the ones that are already loaded.
void FontLoader::update()
{
unload();
}
// Reset font loader
void FontLoader::reset()
{
// Clear font infos, font structs and font metrics
for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
for (int i2 = 0; i2 < 2; ++i2)
for (int i3 = 0; i3 < 4; ++i3) {
fontinfo[i1][i2][i3] = 0;
for (int i4 = 0; i4<10; ++i4) {
fontstruct[i1][i2][i3][i4] = 0;
}
}
}
// Unload all fonts
void FontLoader::unload()
{
// Unload all fonts
for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
for (int i2 = 0; i2 < 2; ++i2)
for (int i3 = 0; i3 < 4; ++i3) {
if (fontinfo[i1][i2][i3]) {
delete fontinfo[i1][i2][i3];
fontinfo[i1][i2][i3] = 0;
}
for (int i4 = 0; i4 < 10; ++i4) {
if (fontstruct[i1][i2][i3][i4]) {
XFreeFont(GUIRunTime::x11Display(), fontstruct[i1][i2][i3][i4]);
fontstruct[i1][i2][i3][i4] = 0;
}
}
}
}
// Get font info
/* Takes care of finding which font that can match the given request. Tries
different alternatives. */
void FontLoader::getFontinfo(LyXFont::FONT_FAMILY family,
LyXFont::FONT_SERIES series,
LyXFont::FONT_SHAPE shape)
{
// Do we have the font info already?
if (fontinfo[family][series][shape] != 0)
return;
// Special fonts
switch (family)
{
case LyXFont::SYMBOL_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific");
return;
case LyXFont::CMR_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*");
return;
case LyXFont::CMSY_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*");
return;
case LyXFont::CMM_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*");
return;
case LyXFont::CMEX_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*");
return;
case LyXFont::MSA_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*");
return;
case LyXFont::MSB_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*");
return;
case LyXFont::EUFRAK_FAMILY:
fontinfo[family][series][shape] =
new FontInfo("-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*");
return;
default:
break;
}
// Normal font. Let's search for an existing name that matches.
string ffamily;
string fseries;
string fshape;
string norm = lyxrc.font_norm;
string fontname;
FontInfo * fi = new FontInfo;
fontinfo[family][series][shape] = fi;
for (int cfam = 0; cfam < 2; ++cfam) {
// Determine family name
switch (family) {
case LyXFont::ROMAN_FAMILY:
switch (cfam) {
case 0: ffamily = lyxrc.roman_font_name; break;
case 1: ffamily = "-*-times";
default: cfam = 100;
}
break;
case LyXFont::SANS_FAMILY:
switch (cfam) {
case 0: ffamily = lyxrc.sans_font_name; break;
case 1: ffamily = "-*-helvetica";
default: cfam = 100;
}
break;
case LyXFont::TYPEWRITER_FAMILY:
switch (cfam) {
case 0: ffamily = lyxrc.typewriter_font_name; break;
case 1: ffamily = "-*-courier";
default: cfam = 100;
}
break;
default: ;
}
for (int cser = 0; cser < 4; ++cser) {
// Determine series name
switch (series) {
case LyXFont::MEDIUM_SERIES:
switch (cser) {
case 0: fseries = "-medium"; break;
case 1: fseries = "-book"; break;
case 2: fseries = "-light";
default: cser = 100;
}
break;
case LyXFont::BOLD_SERIES:
switch (cser) {
case 0: fseries = "-bold"; break;
case 1: fseries = "-black"; break;
case 2: fseries = "-demi"; break;
case 3: fseries = "-demibold";
default: cser = 100;
}
break;
default: ;
}
for (int csha = 0; csha < 2; ++csha) {
// Determine shape name
switch (shape) {
case LyXFont::UP_SHAPE:
case LyXFont::SMALLCAPS_SHAPE:
switch (csha) {
case 0: fshape = "-r";
default: csha = 100;
}
break;
case LyXFont::ITALIC_SHAPE:
switch (csha) {
case 0: fshape = "-i"; break;
case 1: fshape = "-o";
default: csha = 100;
}
break;
case LyXFont::SLANTED_SHAPE:
switch (csha) {
case 0: fshape = "-o"; break;
case 1: fshape = "-i";
default: csha = 100;
}
break;
default: ;
}
//
fontname = ffamily + fseries + fshape +
"-normal-*-*-*-*-*-*-*-" + norm;
fi->setPattern(fontname);
if (fi->exist()) {
return;
}
}
}
}
}
// A dummy fontstruct used when there is no gui.
namespace {
XFontStruct dummyXFontStruct;
bool dummyXFontStructisGood = false;
} // namespace anon
/// Do load font
XFontStruct * FontLoader::doLoad(LyXFont::FONT_FAMILY family,
LyXFont::FONT_SERIES series,
LyXFont::FONT_SHAPE shape,
LyXFont::FONT_SIZE size)
{
if (!lyxrc.use_gui) {
if (!dummyXFontStructisGood) {
// no character specific info
dummyXFontStruct.per_char = 0;
// unit ascent on character displays
dummyXFontStruct.ascent = 1;
// no descent on character displays
dummyXFontStruct.descent = 0;
dummyXFontStructisGood = true;
}
return &dummyXFontStruct;
}
getFontinfo(family, series, shape);
int fsize = int((lyxrc.font_sizes[size] * lyxrc.dpi *
(lyxrc.zoom/100.0)) / 72.27 + 0.5);
string font = fontinfo[family][series][shape]->getFontname(fsize);
if (font.empty()) {
lyxerr << "No font matches request. Using 'fixed'." << endl;
lyxerr << "Start LyX as 'lyx -dbg 515' to get more information." << endl;
font = "fixed";
}
XFontStruct * fs = 0;
current_view->owner()->messagePush(_("Loading font into X-Server..."));
fs = XLoadQueryFont(GUIRunTime::x11Display(), font.c_str());
if (fs == 0) {
if (font == "fixed") {
lyxerr << "We're doomed. Can't get 'fixed' font." << endl;
} else {
lyxerr << "Could not get font. Using 'fixed'." << endl;
fs = XLoadQueryFont(GUIRunTime::x11Display(), "fixed");
}
} else if (lyxerr.debugging(Debug::FONT)) {
// Tell user the font matching
LyXFont f;
f.setFamily(family);
f.setSeries(series);
f.setShape(shape);
f.setSize(size);
// The rest of the attributes are not interesting
f.setEmph(LyXFont::INHERIT);
f.setUnderbar(LyXFont::INHERIT);
f.setNoun(LyXFont::INHERIT);
f.setColor(LColor::inherit);
lyxerr << "Font '" << f.stateText(0)
<< "' matched by\n" << font << endl;
}
current_view->owner()->messagePop();
fontstruct[family][series][shape][size] = fs;
return fs;
}
bool FontLoader::available(LyXFont const & f)
{
if (!lyxrc.use_gui)
return false;
if (!fontinfo[f.family()][f.series()][f.realShape()])
getFontinfo(f.family(), f.series(), f.realShape());
return fontinfo[f.family()][f.series()][f.realShape()]
->getFontname(f.size()).size();
}