]> git.lyx.org Git - lyx.git/blobdiff - src/frontends/qt4/GuiFontLoader.cpp
Use the command-alternatives sequence as defined in menus.bind
[lyx.git] / src / frontends / qt4 / GuiFontLoader.cpp
index b6b03be610f2313e76d01e7ade8d82400aee8c34..4f705330f9d33301d24d2dd2a5422d80b0bbd240 100644 (file)
@@ -1,5 +1,5 @@
 /**
- * \file GuiFontLoader.cpp
+ * \file FontLoader.cpp
  * This file is part of LyX, the document processor.
  * Licence details can be found in the file COPYING.
  *
 
 #include <config.h>
 
-#include "GuiFontLoader.h"
+#include "FontLoader.h"
+
+#include "FontInfo.h"
+#include "GuiFontMetrics.h"
 #include "qt_helpers.h"
 
-#include "debug.h"
 #include "LyXRC.h"
 
-#include "support/convert.h"
+#include "support/debug.h"
 #include "support/filetools.h"
+#include "support/gettext.h"
 #include "support/lstrings.h"
 #include "support/Systemcall.h"
 #include "support/Package.h"
 #include "support/os.h"
 
-#include <boost/tuple/tuple.hpp>
-
 #include <QFontInfo>
 #include <QFontDatabase>
 
-using std::endl;
-using std::make_pair;
+#include "support/lassert.h"
 
-using std::pair;
-using std::vector;
+using namespace std;
+using namespace lyx::support;
 
 QString const math_fonts[] = {"cmex10", "cmmi10", "cmr10", "cmsy10",
-       "eufm10", "msam10", "msbm10", "wasy10", "esint10"};
+       "esint10", "eufm10", "msam10", "msbm10", "rsfs10", "stmary10",
+       "wasy10"};
 int const num_math_fonts = sizeof(math_fonts) / sizeof(*math_fonts);
 
-
 namespace lyx {
 
-using support::contains;
-using support::package;
-using support::addPath;
-using support::addName;
-
 extern docstring const stateText(FontInfo const & f);
 
 namespace frontend {
 
+/**
+ * Matches Fonts against
+ * actual QFont instances, and also caches metrics.
+ */
+class GuiFontInfo
+{
+public:
+       GuiFontInfo(FontInfo const & f);
+
+       /// The font instance
+       QFont font;
+       /// Metrics on the font
+       GuiFontMetrics metrics;
+};
+
 namespace {
 
 struct SymbolFont {
@@ -60,51 +70,65 @@ struct SymbolFont {
 };
 
 SymbolFont symbol_fonts[] = {
-       { SYMBOL_FAMILY,
-               "symbol",
-               "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific" },
-
-       { CMR_FAMILY,
-               "cmr10",
-               "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
-
-       { CMSY_FAMILY,
-               "cmsy10",
-               "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
-
-       { CMM_FAMILY,
-               "cmmi10",
-               "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
-
-       { CMEX_FAMILY,
-               "cmex10",
-               "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
+       { SYMBOL_FAMILY,"symbol", "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific"},
+       { CMR_FAMILY,   "cmr10",  "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
+       { CMSY_FAMILY,  "cmsy10", "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
+       { CMM_FAMILY,   "cmmi10", "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
+       { CMEX_FAMILY,  "cmex10", "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
+       { MSA_FAMILY,   "msam10", "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
+       { MSB_FAMILY,   "msbm10", "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
+       { EUFRAK_FAMILY,"eufm10", "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
+       { RSFS_FAMILY,  "rsfs10", "-*-rsfs10-medium-*-*-*-*-*-*-*-*-*-*-*" },
+       { STMARY_FAMILY,"stmary10","-*-stmary10-medium-*-*-*-*-*-*-*-*-*-*-*" },
+       { WASY_FAMILY,  "wasy10", "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" },
+       { ESINT_FAMILY, "esint10","-*-esint10-medium-*-*-*-*-*-*-*-*-*-*-*" }
+};
 
-       { MSA_FAMILY,
-               "msam10",
-               "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
+size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_fonts[0]);
 
-       { MSB_FAMILY,
-               "msbm10",
-               "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
+/// BUTT ugly !
+static GuiFontInfo *
+fontinfo_[NUM_FAMILIES][NUM_SERIES][NUM_SHAPE][NUM_SIZE][NUM_STYLE];
 
-       { EUFRAK_FAMILY,
-               "eufm10",
-               "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 
-       { WASY_FAMILY,
-               "wasy10",
-               "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" },
+// returns a reference to the pointer type (GuiFontInfo *) in the
+// fontinfo_ table.
+GuiFontInfo * & fontinfo_ptr(FontInfo const & f)
+{
+       // The display font and the text font are the same
+       size_t const style = (f.style() == LM_ST_DISPLAY) ? LM_ST_TEXT : f.style();
+       return fontinfo_[f.family()][f.series()][f.realShape()][f.size()][style];
+}
 
-       { ESINT_FAMILY,
-               "esint10",
-               "-*-esint10-medium-*-*-*-*-*-*-*-*-*-*-*" }
-};
 
-size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(SymbolFont);
+// Get font info (font + metrics) for the given LyX font.
+// if not cached, create it.
+GuiFontInfo & fontinfo(FontInfo const & f)
+{
+    bool const fontIsRealized =
+            (f.family() < NUM_FAMILIES) &&
+            (f.series() < NUM_SERIES) &&
+            (f.realShape() < NUM_SHAPE) &&
+            (f.size() < NUM_SIZE);
+    if (!fontIsRealized) {
+        // We can reset the font to something sensible in release mode.
+        LATTEST(false);
+        LYXERR0("Unrealized font!");
+        FontInfo f2 = f;
+        f2.realize(sane_font);
+        GuiFontInfo * & fi = fontinfo_ptr(f2);
+        if (!fi)
+            fi = new GuiFontInfo(f2);
+        return *fi;
+    }
+    GuiFontInfo * & fi = fontinfo_ptr(f);
+       if (!fi)
+               fi = new GuiFontInfo(f);
+       return *fi;
+}
 
 
-QString getRawName(QString const & family)
+QString rawName(QString const & family)
 {
        for (size_t i = 0; i < nr_symbol_fonts; ++i)
                if (family == symbol_fonts[i].family)
@@ -115,7 +139,7 @@ QString getRawName(QString const & family)
 }
 
 
-QString const symbolFamily(FontFamily family)
+QString symbolFamily(FontFamily family)
 {
        for (size_t i = 0; i < nr_symbol_fonts; ++i) {
                if (family == symbol_fonts[i].lyx_family)
@@ -125,13 +149,16 @@ QString const symbolFamily(FontFamily family)
 }
 
 
+#if 0
 bool isSymbolFamily(FontFamily family)
 {
        return family >= SYMBOL_FAMILY && family <= ESINT_FAMILY;
 }
+#endif
 
 
-static bool isChosenFont(QFont & font, QString const & family)
+static bool isChosenFont(QFont & font, QString const & family,
+                        QString const & style)
 {
        // QFontInfo won't find a font that has only a few glyphs at unusual
        // positions, e.g. the original esint10 font.
@@ -139,9 +166,13 @@ static bool isChosenFont(QFont & font, QString const & family)
        // positions.
        QFontInfo fi(font);
 
-       LYXERR(Debug::FONT, "got: " << fromqstr(fi.family()));
+       LYXERR(Debug::FONT, "got: " << fi.family());
 
-       if (fi.family().contains(family)) {
+       if (fi.family().contains(family)
+#if QT_VERSION >= 0x040800
+           && (style.isEmpty() || fi.styleName().contains(style))
+#endif
+           ) {
                LYXERR(Debug::FONT, " got it ");
                return true;
        }
@@ -150,87 +181,107 @@ static bool isChosenFont(QFont & font, QString const & family)
 }
 
 
-static pair<QFont, bool> const getSymbolFont(QString const & family)
+QFont symbolFont(QString const & family, bool * ok)
 {
-       LYXERR(Debug::FONT, "Looking for font family "
-               << fromqstr(family) << " ... ");
+       LYXERR(Debug::FONT, "Looking for font family " << family << " ... ");
        QString upper = family;
        upper[0] = family[0].toUpper();
 
        QFont font;
-       font.setKerning(false);
        font.setFamily(family);
+#if QT_VERSION >= 0x040800
+       font.setStyleName("LyX");
+
+       if (isChosenFont(font, family, "LyX")) {
+               LYXERR(Debug::FONT, "lyx!");
+               *ok = true;
+               return font;
+       }
 
-       if (isChosenFont(font, family)) {
+       LYXERR(Debug::FONT, "Trying normal " << family << " ... ");
+       font.setStyleName(QString());
+#endif
+
+       if (isChosenFont(font, family, QString())) {
                LYXERR(Debug::FONT, "normal!");
-               return make_pair<QFont, bool>(font, true);
+               *ok = true;
+               return font;
        }
 
-       LYXERR(Debug::FONT, "Trying " << fromqstr(upper) << " ... ");
+       LYXERR(Debug::FONT, "Trying " << upper << " ... ");
        font.setFamily(upper);
 
-       if (isChosenFont(font, upper)) {
+       if (isChosenFont(font, upper, QString())) {
                LYXERR(Debug::FONT, "upper!");
-               return make_pair<QFont, bool>(font, true);
+               *ok = true;
+               return font;
        }
 
        // A simple setFamily() fails on Qt 2
 
-       QString const rawName = getRawName(family);
-       LYXERR(Debug::FONT, "Trying " << fromqstr(rawName) << " ... ");
-       font.setRawName(rawName);
+       QString const raw = rawName(family);
+       LYXERR(Debug::FONT, "Trying " << raw << " ... ");
+       font.setRawName(raw);
 
-       if (isChosenFont(font, family)) {
+       if (isChosenFont(font, family, QString())) {
                LYXERR(Debug::FONT, "raw version!");
-               return make_pair<QFont, bool>(font, true);
+               *ok = true;
+               return font;
        }
 
        LYXERR(Debug::FONT, " FAILED :-(");
-       return make_pair<QFont, bool>(font, false);
+       *ok = false;
+       return font;
 }
 
-} // namespace anon
+} // namespace
 
 
-GuiFontLoader::GuiFontLoader()
+FontLoader::FontLoader()
 {
        QString const fonts_dir =
-               toqstr(addPath(package().system_support().absFilename(), "fonts"));
+               toqstr(addPath(package().system_support().absFileName(), "fonts"));
 
        for (int i = 0 ; i < num_math_fonts; ++i) {
-               QString const font_file = fonts_dir + '/' + math_fonts[i] + ".ttf";
+               QString const font_file = fonts_dir + math_fonts[i] + ".ttf";
                int fontID = QFontDatabase::addApplicationFont(font_file);
 
-               LYXERR(Debug::FONT, "Adding font " << fromqstr(font_file)
-                                   << static_cast<const char *>
-                                       (fontID < 0 ? " FAIL" : " OK"));
+               LYXERR(Debug::FONT, "Adding font " << font_file
+                                   << (fontID < 0 ? " FAIL" : " OK"));
        }
 
        for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
-               for (int i2 = 0; i2 < 2; ++i2)
-                       for (int i3 = 0; i3 < 4; ++i3)
-                               for (int i4 = 0; i4 < 10; ++i4)
-                                       fontinfo_[i1][i2][i3][i4] = 0;
+               for (int i2 = 0; i2 < NUM_SERIES; ++i2)
+                       for (int i3 = 0; i3 < NUM_SHAPE; ++i3)
+                               for (int i4 = 0; i4 < NUM_SIZE; ++i4)
+                                       for (int i5 = 0; i5 < NUM_STYLE; ++i5)
+                                               fontinfo_[i1][i2][i3][i4][i5] = 0;
 }
 
 
-void GuiFontLoader::update()
+void FontLoader::update()
 {
-       for (int i1 = 0; i1 < NUM_FAMILIES; ++i1) {
-               for (int i2 = 0; i2 < 2; ++i2)
-                       for (int i3 = 0; i3 < 4; ++i3)
-                               for (int i4 = 0; i4 < 10; ++i4) {
-                                       delete fontinfo_[i1][i2][i3][i4];
-                                       fontinfo_[i1][i2][i3][i4] = 0;
+       for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
+               for (int i2 = 0; i2 < NUM_SERIES; ++i2)
+                       for (int i3 = 0; i3 < NUM_SHAPE; ++i3)
+                               for (int i4 = 0; i4 < NUM_SIZE; ++i4)
+                                       for (int i5 = 0; i5 < NUM_STYLE; ++i5) {
+                                       delete fontinfo_[i1][i2][i3][i4][i5];
+                                       fontinfo_[i1][i2][i3][i4][i5] = 0;
                                }
-       }
 }
 
 
+FontLoader::~FontLoader()
+{
+       update();
+}
+
 /////////////////////////////////////////////////
 
+namespace {
 
-static QString makeFontName(QString const & family, QString const & foundry)
+QString makeFontName(QString const & family, QString const & foundry)
 {
        QString res = family;
        if (!foundry.isEmpty())
@@ -239,24 +290,24 @@ static QString makeFontName(QString const & family, QString const & foundry)
 }
 
 
-GuiFontInfo::GuiFontInfo(FontInfo const & f)
+QFont makeQFont(FontInfo const & f)
 {
-       font.setKerning(false);
+       QFont font;
        QString const pat = symbolFamily(f.family());
        if (!pat.isEmpty()) {
-               bool tmp;
-               boost::tie(font, tmp) = getSymbolFont(pat);
+               bool ok;
+               font = symbolFont(pat, &ok);
        } else {
                switch (f.family()) {
                case ROMAN_FAMILY: {
                        QString family = makeFontName(toqstr(lyxrc.roman_font_name),
-                                                                                                                                               toqstr(lyxrc.roman_font_foundry)); 
+                               toqstr(lyxrc.roman_font_foundry));
                        font.setFamily(family);
-#ifdef Q_WS_MACX
-#if QT_VERSION >= 0x040300
-                       // Workaround for a Qt bug, see http://bugzilla.lyx.org/show_bug.cgi?id=3684
-                       // It is reported to Trolltech at 02/06/07 against 4.3 final.
-                       // FIXME: Add an upper version limit as soon as the bug is fixed in Qt.
+#ifdef Q_OS_MAC
+#if QT_VERSION >= 0x040300 //&& QT_VERSION < 0x040800
+                       // Workaround for a Qt bug, see http://www.lyx.org/trac/ticket/3684
+                       // and http://bugreports.qt.nokia.com/browse/QTBUG-11145.
+                       // FIXME: Check whether this is really fixed in Qt 4.8
                        if (family == "Times" && !font.exactMatch())
                                font.setFamily("Times New Roman");
 #endif
@@ -289,15 +340,20 @@ GuiFontInfo::GuiFontInfo(FontInfo const & f)
 
        switch (f.realShape()) {
                case ITALIC_SHAPE:
+                       font.setStyle(QFont::StyleItalic);
+                       break;
                case SLANTED_SHAPE:
-                       font.setItalic(true);
+                       font.setStyle(QFont::StyleOblique);
+                       break;
+               case SMALLCAPS_SHAPE:
+                       font.setCapitalization(QFont::SmallCaps);
                        break;
                default:
                        break;
        }
 
-       LYXERR(Debug::FONT, "Font '" << to_utf8(stateText(f))
-               << "' matched by\n" << fromqstr(font.family()));
+       LYXERR(Debug::FONT, "Font '" << stateText(f)
+               << "' matched by\n" << font.family());
 
        // Is this an exact match?
        if (font.exactMatch())
@@ -305,36 +361,40 @@ GuiFontInfo::GuiFontInfo(FontInfo const & f)
        else
                LYXERR(Debug::FONT, "This font is NOT an exact match");
 
-       LYXERR(Debug::FONT, "XFLD: " << fromqstr(font.rawName()));
+       LYXERR(Debug::FONT, "XFLD: " << font.rawName());
 
-       font.setPointSizeF(convert<double>(lyxrc.font_sizes[f.size()])
-                              * lyxrc.zoom / 100.0);
+       font.setPointSizeF(f.realSize() * lyxrc.currentZoom / 100.0);
 
        LYXERR(Debug::FONT, "The font has size: " << font.pointSizeF());
 
-       if (f.realShape() != SMALLCAPS_SHAPE) {
-               metrics.reset(new GuiFontMetrics(font));
-       } else {
-               // handle small caps ourselves ...
-               FontInfo smallfont = f;
-               smallfont.decSize().decSize().setShape(UP_SHAPE);
-               QFont font2(font);
-               font2.setKerning(false);
-               font2.setPointSizeF(convert<double>(lyxrc.font_sizes[smallfont.size()])
-                              * lyxrc.zoom / 100.0);
-
-               metrics.reset(new GuiFontMetrics(font, font2));
-       }
-
+       return font;
 }
 
+} // namespace
 
-bool GuiFontLoader::available(FontInfo const & f)
+
+GuiFontInfo::GuiFontInfo(FontInfo const & f)
+       : font(makeQFont(f)), metrics(font)
+{}
+
+
+bool FontLoader::available(FontInfo const & f)
 {
+       // FIXME THREAD
        static vector<int> cache_set(NUM_FAMILIES, false);
        static vector<int> cache(NUM_FAMILIES, false);
 
        FontFamily family = f.family();
+#ifdef Q_OS_MAC
+       // Apple ships a font name "Symbol", which has more or less the same
+       // glyphs as the original PostScript Symbol font, but it uses a different
+       // encoding (see https://en.wikipedia.org/wiki/Symbol_(typeface)#cite_note-2).
+       // Since we expect the font specific encoding of the original
+       // PostScript Symbol font, we can't use the one provided on OS X.
+       // See also the discussion in bug 7954.
+       if (f.family() == SYMBOL_FAMILY)
+               return false;
+#endif
        if (cache_set[family])
                return cache[family];
        cache_set[family] = true;
@@ -344,13 +404,47 @@ bool GuiFontLoader::available(FontInfo const & f)
                // We don't care about non-symbol fonts
                return false;
 
-       pair<QFont, bool> tmp = getSymbolFont(pat);
-       if (!tmp.second)
+       bool ok;
+       symbolFont(pat, &ok);
+       if (!ok)
                return false;
 
        cache[family] = true;
        return true;
 }
 
+
+bool FontLoader::canBeDisplayed(char_type c)
+{
+       // bug 8493
+       if (c == 0x0009)
+               // FIXME check whether this is still needed for Qt5
+               return false;
+#if QT_VERSION < 0x050000 && defined(QT_MAC_USE_COCOA) && (QT_MAC_USE_COCOA > 0)
+       // bug 7954, see also comment in GuiPainter::text()
+       if (c == 0x00ad)
+               return false;
+#endif
+       return true;
+}
+
+
+FontMetrics const & FontLoader::metrics(FontInfo const & f)
+{
+       return fontinfo(f).metrics;
+}
+
+
+GuiFontMetrics const & getFontMetrics(FontInfo const & f)
+{
+       return fontinfo(f).metrics;
+}
+
+
+QFont const & getFont(FontInfo const & f)
+{
+       return fontinfo(f).font;
+}
+
 } // namespace frontend
 } // namespace lyx