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https://git.lyx.org/repos/lyx.git
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c293be56bd
In particular, the directory frontends/qt4 is renamed to frontends/qt. Many configurations file have to be updated. All mentions of qt4 in the source have been audited, and changed to qt if necessary. The only part that has not been updated is the CMake build system.
449 lines
10 KiB
C++
449 lines
10 KiB
C++
/**
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* \file FontLoader.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Asger Alstrup
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* \author John Levon
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "FontLoader.h"
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#include "FontInfo.h"
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#include "GuiFontMetrics.h"
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#include "qt_helpers.h"
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#include "LyXRC.h"
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#include "support/debug.h"
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#include "support/filetools.h"
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#include "support/gettext.h"
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#include "support/lstrings.h"
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#include "support/Systemcall.h"
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#include "support/Package.h"
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#include "support/os.h"
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#include <QFontInfo>
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#include <QFontDatabase>
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#include "support/lassert.h"
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using namespace std;
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using namespace lyx::support;
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QString const math_fonts[] = {"cmex10", "cmmi10", "cmr10", "cmsy10",
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"esint10", "eufm10", "msam10", "msbm10", "rsfs10", "stmary10",
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"wasy10"};
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int const num_math_fonts = sizeof(math_fonts) / sizeof(*math_fonts);
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namespace lyx {
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namespace frontend {
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/**
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* Matches Fonts against
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* actual QFont instances, and also caches metrics.
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*/
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class GuiFontInfo
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{
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public:
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GuiFontInfo(FontInfo const & f);
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/// The font instance
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QFont font;
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/// Metrics on the font
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GuiFontMetrics metrics;
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};
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namespace {
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struct SymbolFont {
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FontFamily lyx_family;
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QString family;
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QString xlfd;
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};
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SymbolFont symbol_fonts[] = {
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{ SYMBOL_FAMILY,"symbol", "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific"},
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{ CMR_FAMILY, "cmr10", "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
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{ CMSY_FAMILY, "cmsy10", "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
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{ CMM_FAMILY, "cmmi10", "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
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{ CMEX_FAMILY, "cmex10", "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
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{ MSA_FAMILY, "msam10", "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
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{ MSB_FAMILY, "msbm10", "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
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{ EUFRAK_FAMILY,"eufm10", "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
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{ RSFS_FAMILY, "rsfs10", "-*-rsfs10-medium-*-*-*-*-*-*-*-*-*-*-*" },
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{ STMARY_FAMILY,"stmary10","-*-stmary10-medium-*-*-*-*-*-*-*-*-*-*-*" },
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{ WASY_FAMILY, "wasy10", "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" },
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{ ESINT_FAMILY, "esint10","-*-esint10-medium-*-*-*-*-*-*-*-*-*-*-*" }
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};
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size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_fonts[0]);
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/// BUTT ugly !
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static GuiFontInfo *
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fontinfo_[NUM_FAMILIES][NUM_SERIES][NUM_SHAPE][NUM_SIZE][NUM_STYLE];
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// returns a reference to the pointer type (GuiFontInfo *) in the
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// fontinfo_ table.
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GuiFontInfo * & fontinfo_ptr(FontInfo const & f)
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{
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// The display font and the text font are the same
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size_t const style = (f.style() == DISPLAY_STYLE) ? TEXT_STYLE : f.style();
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return fontinfo_[f.family()][f.series()][f.realShape()][f.size()][style];
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}
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// Get font info (font + metrics) for the given LyX font.
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// if not cached, create it.
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GuiFontInfo & fontinfo(FontInfo const & f)
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{
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bool const fontIsRealized =
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(f.family() < NUM_FAMILIES) &&
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(f.series() < NUM_SERIES) &&
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(f.realShape() < NUM_SHAPE) &&
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(f.size() < NUM_SIZE);
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if (!fontIsRealized) {
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// We can reset the font to something sensible in release mode.
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LATTEST(false);
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LYXERR0("Unrealized font!");
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FontInfo f2 = f;
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f2.realize(sane_font);
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GuiFontInfo * & fi = fontinfo_ptr(f2);
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if (!fi)
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fi = new GuiFontInfo(f2);
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return *fi;
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}
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GuiFontInfo * & fi = fontinfo_ptr(f);
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if (!fi)
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fi = new GuiFontInfo(f);
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return *fi;
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}
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QString rawName(QString const & family)
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{
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for (size_t i = 0; i < nr_symbol_fonts; ++i)
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if (family == symbol_fonts[i].family)
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return symbol_fonts[i].xlfd;
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LYXERR(Debug::FONT, "BUG: family not found !");
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return QString();
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}
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QString symbolFamily(FontFamily family)
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{
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for (size_t i = 0; i < nr_symbol_fonts; ++i) {
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if (family == symbol_fonts[i].lyx_family)
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return symbol_fonts[i].family;
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}
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return QString();
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}
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#if 0
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bool isSymbolFamily(FontFamily family)
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{
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return family >= SYMBOL_FAMILY && family <= ESINT_FAMILY;
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}
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#endif
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static bool isChosenFont(QFont & font, QString const & family,
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QString const & style)
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{
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// QFontInfo won't find a font that has only a few glyphs at unusual
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// positions, e.g. the original esint10 font.
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// The workaround is to add dummy glyphs at least at all ASCII
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// positions.
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QFontInfo fi(font);
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LYXERR(Debug::FONT, "got: " << fi.family());
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if (fi.family().contains(family)
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#if QT_VERSION >= 0x040800
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&& (style.isEmpty() || fi.styleName().contains(style))
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#endif
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) {
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LYXERR(Debug::FONT, " got it ");
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return true;
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}
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return false;
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}
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QFont symbolFont(QString const & family, bool * ok)
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{
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LYXERR(Debug::FONT, "Looking for font family " << family << " ... ");
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QString upper = family;
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upper[0] = family[0].toUpper();
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QFont font;
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font.setFamily(family);
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#if QT_VERSION >= 0x040800
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font.setStyleName("LyX");
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if (isChosenFont(font, family, "LyX")) {
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LYXERR(Debug::FONT, "lyx!");
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*ok = true;
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return font;
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}
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LYXERR(Debug::FONT, "Trying normal " << family << " ... ");
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font.setStyleName(QString());
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#endif
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if (isChosenFont(font, family, QString())) {
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LYXERR(Debug::FONT, "normal!");
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*ok = true;
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return font;
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}
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LYXERR(Debug::FONT, "Trying " << upper << " ... ");
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font.setFamily(upper);
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if (isChosenFont(font, upper, QString())) {
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LYXERR(Debug::FONT, "upper!");
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*ok = true;
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return font;
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}
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// A simple setFamily() fails on Qt 2
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QString const raw = rawName(family);
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LYXERR(Debug::FONT, "Trying " << raw << " ... ");
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font.setRawName(raw);
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if (isChosenFont(font, family, QString())) {
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LYXERR(Debug::FONT, "raw version!");
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*ok = true;
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return font;
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}
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LYXERR(Debug::FONT, " FAILED :-(");
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*ok = false;
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return font;
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}
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} // namespace
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FontLoader::FontLoader()
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{
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QString const fonts_dir =
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toqstr(addPath(package().system_support().absFileName(), "fonts"));
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for (int i = 0 ; i < num_math_fonts; ++i) {
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QString const font_file = fonts_dir + math_fonts[i] + ".ttf";
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int fontID = QFontDatabase::addApplicationFont(font_file);
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LYXERR(Debug::FONT, "Adding font " << font_file
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<< (fontID < 0 ? " FAIL" : " OK"));
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}
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for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
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for (int i2 = 0; i2 < NUM_SERIES; ++i2)
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for (int i3 = 0; i3 < NUM_SHAPE; ++i3)
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for (int i4 = 0; i4 < NUM_SIZE; ++i4)
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for (int i5 = 0; i5 < NUM_STYLE; ++i5)
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fontinfo_[i1][i2][i3][i4][i5] = 0;
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}
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void FontLoader::update()
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{
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for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
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for (int i2 = 0; i2 < NUM_SERIES; ++i2)
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for (int i3 = 0; i3 < NUM_SHAPE; ++i3)
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for (int i4 = 0; i4 < NUM_SIZE; ++i4)
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for (int i5 = 0; i5 < NUM_STYLE; ++i5) {
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delete fontinfo_[i1][i2][i3][i4][i5];
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fontinfo_[i1][i2][i3][i4][i5] = 0;
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}
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}
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FontLoader::~FontLoader()
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{
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update();
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}
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/////////////////////////////////////////////////
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namespace {
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QString makeFontName(QString const & family, QString const & foundry)
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{
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QString res = family;
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if (!foundry.isEmpty())
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res += " [" + foundry + ']';
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return res;
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}
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QFont makeQFont(FontInfo const & f)
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{
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QFont font;
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QString const pat = symbolFamily(f.family());
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if (!pat.isEmpty()) {
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bool ok;
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font = symbolFont(pat, &ok);
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} else {
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switch (f.family()) {
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case ROMAN_FAMILY: {
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QString family = makeFontName(toqstr(lyxrc.roman_font_name),
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toqstr(lyxrc.roman_font_foundry));
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font.setFamily(family);
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#ifdef Q_OS_MAC
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#if QT_VERSION >= 0x040300 //&& QT_VERSION < 0x040800
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// Workaround for a Qt bug, see http://www.lyx.org/trac/ticket/3684
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// and http://bugreports.qt.nokia.com/browse/QTBUG-11145.
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// FIXME: Check whether this is really fixed in Qt 4.8
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if (family == "Times" && !font.exactMatch())
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font.setFamily("Times New Roman");
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#endif
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#endif
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break;
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}
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case SANS_FAMILY:
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font.setFamily(makeFontName(toqstr(lyxrc.sans_font_name),
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toqstr(lyxrc.sans_font_foundry)));
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break;
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case TYPEWRITER_FAMILY:
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font.setFamily(makeFontName(toqstr(lyxrc.typewriter_font_name),
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toqstr(lyxrc.typewriter_font_foundry)));
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break;
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default:
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break;
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}
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}
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switch (f.series()) {
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case MEDIUM_SERIES:
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font.setWeight(QFont::Normal);
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break;
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case BOLD_SERIES:
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font.setWeight(QFont::Bold);
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break;
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default:
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break;
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}
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switch (f.realShape()) {
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case ITALIC_SHAPE:
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font.setStyle(QFont::StyleItalic);
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break;
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case SLANTED_SHAPE:
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font.setStyle(QFont::StyleOblique);
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break;
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case SMALLCAPS_SHAPE:
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font.setCapitalization(QFont::SmallCaps);
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break;
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default:
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break;
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}
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LYXERR(Debug::FONT, "Font '" << f.stateText()
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<< "' matched by\n" << font.family());
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// Is this an exact match?
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if (font.exactMatch())
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LYXERR(Debug::FONT, "This font is an exact match");
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else
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LYXERR(Debug::FONT, "This font is NOT an exact match");
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LYXERR(Debug::FONT, "XFLD: " << font.rawName());
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font.setPointSizeF(f.realSize() * lyxrc.currentZoom / 100.0);
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LYXERR(Debug::FONT, "The font has size: " << font.pointSizeF());
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return font;
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}
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} // namespace
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GuiFontInfo::GuiFontInfo(FontInfo const & f)
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: font(makeQFont(f)), metrics(font)
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{}
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bool FontLoader::available(FontInfo const & f)
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{
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// FIXME THREAD
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static vector<int> cache_set(NUM_FAMILIES, false);
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static vector<int> cache(NUM_FAMILIES, false);
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FontFamily family = f.family();
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#ifdef Q_OS_MAC
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// Apple ships a font name "Symbol", which has more or less the same
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// glyphs as the original PostScript Symbol font, but it uses a different
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// encoding (see https://en.wikipedia.org/wiki/Symbol_(typeface)#cite_note-2).
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// Since we expect the font specific encoding of the original
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// PostScript Symbol font, we can't use the one provided on OS X.
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// See also the discussion in bug 7954.
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if (f.family() == SYMBOL_FAMILY)
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return false;
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#endif
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if (cache_set[family])
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return cache[family];
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cache_set[family] = true;
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QString const pat = symbolFamily(family);
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if (pat.isEmpty())
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// We don't care about non-symbol fonts
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return false;
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bool ok;
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symbolFont(pat, &ok);
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if (!ok)
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return false;
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cache[family] = true;
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return true;
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}
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bool FontLoader::canBeDisplayed(char_type c)
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{
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// bug 8493
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if (c == 0x0009)
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// FIXME check whether this is still needed for Qt5
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return false;
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#if QT_VERSION < 0x050000 && defined(QT_MAC_USE_COCOA) && (QT_MAC_USE_COCOA > 0)
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// bug 7954, see also comment in GuiPainter::text()
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if (c == 0x00ad)
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return false;
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#endif
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return true;
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}
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FontMetrics const & FontLoader::metrics(FontInfo const & f)
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{
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return fontinfo(f).metrics;
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}
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GuiFontMetrics const & getFontMetrics(FontInfo const & f)
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{
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return fontinfo(f).metrics;
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}
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QFont const & getFont(FontInfo const & f)
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{
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return fontinfo(f).font;
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}
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} // namespace frontend
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} // namespace lyx
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