qfontengine_x11.cpp File Reference

#include "qbitmap.h"
#include <qapplication.h>
#include <qbytearray.h>
#include <qdebug.h>
#include <qtextcodec.h>
#include <qthread.h>
#include "qfontdatabase.h"
#include "qpaintdevice.h"
#include "qpainter.h"
#include "qvarlengtharray.h"
#include "qwidget.h"
#include "qsettings.h"
#include "qfile.h"
#include <private/qpaintengine_x11_p.h>
#include "qfont.h"
#include "qfont_p.h"
#include "qfontengine_p.h"
#include <qhash.h>
#include <private/qpainter_p.h>
#include <private/qunicodetables_p.h>
#include <private/qt_x11_p.h>
#include <private/qpixmap_x11_p.h>
#include "qx11info_x11.h"
#include "qfontengine_x11_p.h"
#include <limits.h>
#include <ft2build.h>

Go to the source code of this file.

Functions
static XCharStruct *	charStruct (XFontStruct *xfs, uint ch)
static QFontEngine *	engineForPattern (FcPattern *match, const QFontDef &request, int screen)
static QFontEngine::FaceId	fontFile (const QByteArray &_xname, QFreetypeFace **freetype, int *synth)
static QStringList	fontPath ()
static int	maxIndex (XFontStruct *f)
int	qt_mib_for_xlfd_encoding (const char *encoding)
Q_GUI_EXPORT void	qt_x11ft_convert_pattern (FcPattern *pattern, QByteArray *file_name, int *index, bool *antialias)
int	qt_xlfd_encoding_id (const char *encoding)

Variables
static QStringList *	qt_fontpath = 0

Function Documentation

charStruct()

static XCharStruct* charStruct ( XFontStruct *  xfs, uint  ch  )

inlinestatic

Definition at line 303 of file qfontengine_x11.cpp.

Referenced by QFontEngineXLFD::boundingBox(), QFontEngineXLFD::canRender(), and QFontEngineXLFD::recalcAdvances().

{
    XCharStruct *xcs = 0;
    unsigned char r = ch>>8;
    unsigned char c = ch&0xff;
    if (xfs->per_char &&
         r >= xfs->min_byte1 &&
         r <= xfs->max_byte1 &&
         c >= xfs->min_char_or_byte2 &&
         c <= xfs->max_char_or_byte2) {
        xcs = xfs->per_char + ((r - xfs->min_byte1) *
                               (xfs->max_char_or_byte2 -
                                xfs->min_char_or_byte2 + 1)) +
              (c - xfs->min_char_or_byte2);
        if (xcs->width == 0 && xcs->ascent == 0 &&  xcs->descent == 0)
            xcs = 0;
    }
    return xcs;
}

engineForPattern()

static QFontEngine* engineForPattern ( FcPattern *  match, const QFontDef &  request, int  screen  )

static

Definition at line 864 of file qfontengine_x11.cpp.

Referenced by QFontEngineMultiFT::loadEngine().

{
    QFontEngineX11FT *engine = new QFontEngineX11FT(match, request, screen);
    if (!engine->invalid())
        return engine;

    delete engine;
    QFontEngine *fe = new QFontEngineBox(request.pixelSize);
    fe->fontDef = request;
    return fe;
}

fontFile()

static QFontEngine::FaceId fontFile ( const QByteArray &  _xname, QFreetypeFace **  freetype, int *  synth  )

static

Definition at line 207 of file qfontengine_x11.cpp.

Referenced by QBasicUnixFontDatabase::addTTFile(), QFontEngineXLFD::faceId(), QFontconfigDatabase::populateFontDatabase(), and resolveGdi32().

{
    *freetype = 0;
    *synth = 0;

    QByteArray xname = _xname.toLower();

    int pos = 0;
    int minus = 0;
    while (minus < 5 && (pos = xname.indexOf('-', pos + 1)))
        ++minus;
    QByteArray searchname = xname.left(pos);
    while (minus < 12 && (pos = xname.indexOf('-', pos + 1)))
        ++minus;
    QByteArray encoding = xname.mid(pos + 1);
    //qDebug("xname='%s', searchname='%s', encoding='%s'", xname.data(), searchname.data(), encoding.data());
    QStringList fontpath = fontPath();
    QFontEngine::FaceId face_id;
    face_id.index = 0;

    QByteArray best_mapping;

    for (QStringList::ConstIterator it = fontpath.constBegin(); it != fontpath.constEnd(); ++it) {
        if (!(*it).startsWith(QLatin1Char('/')))
            continue; // not a path name, a font server
        QString fontmapname;
        int num = 0;
        // search font.dir and font.scale for the right file
        while (num < 2) {
            if (num == 0)
                fontmapname = (*it) + QLatin1String("/fonts.scale");
            else
                fontmapname = (*it) + QLatin1String("/fonts.dir");
            ++num;
            //qWarning(fontmapname);
            QFile fontmap(fontmapname);
            if (!fontmap.open(QIODevice::ReadOnly))
                continue;
            while (!fontmap.atEnd()) {
                QByteArray mapping = fontmap.readLine();
                QByteArray lmapping = mapping.toLower();

                //qWarning(xfontname);
                //qWarning(mapping);
                if (!lmapping.contains(searchname))
                    continue;
                int index = mapping.indexOf(' ');
                QByteArray ffn = mapping.mid(0,index);
                // remove bitmap formats freetype can't handle
                if (ffn.contains(".spd") || ffn.contains(".phont"))
                    continue;
                bool best_match = false;
                if (!best_mapping.isEmpty()) {
                    if (lmapping.contains("-0-0-0-0-")) { // scalable font
                        best_match = true;
                        goto found;
                    }
                    if (lmapping.contains(encoding) && !best_mapping.toLower().contains(encoding))
                        goto found;
                    continue;
                }

            found:
                int colon = ffn.lastIndexOf(':');
                if (colon != -1) {
                    QByteArray s = ffn.left(colon);
                    ffn = ffn.mid(colon + 1);
                    if (s.contains("ds="))
                        *synth |= QFontEngine::SynthesizedBold;
                    if (s.contains("ai="))
                        *synth |= QFontEngine::SynthesizedItalic;
                }
                face_id.filename = (*it).toLocal8Bit() + '/' + ffn;
                best_mapping = mapping;
                if (best_match)
                    goto end;
            }
        }
    }
end:
//     qDebug("fontfile for %s is from '%s'\n    got %s synth=%d", xname.data(),
//            best_mapping.data(), face_id.filename.data(), *synth);
    *freetype = QFreetypeFace::getFace(face_id);
    if (!*freetype) {
        face_id.index = 0;
        face_id.filename = QByteArray();
    }
    return face_id;
}

fontPath()

static QStringList fontPath ( )

static

Definition at line 137 of file qfontengine_x11.cpp.

Referenced by fontFile().

{
    if (qt_fontpath)
        return *qt_fontpath;

    // append qsettings fontpath
    QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
    settings.beginGroup(QLatin1String("Qt"));

    QStringList fontpath;

    int npaths;
    char** font_path;
    font_path = XGetFontPath(X11->display, &npaths);
    bool xfsconfig_read = false;
    for (int i=0; i<npaths; i++) {
        // If we're using xfs, append font paths from /etc/X11/fs/config
        // can't hurt, and chances are we'll get all fonts that way.
        if (((font_path[i])[0] != '/') && !xfsconfig_read) {
            // We're using xfs -> read its config
            bool finished = false;
            QFile f(QLatin1String("/etc/X11/fs/config"));
            if (!f.exists())
                f.setFileName(QLatin1String("/usr/X11R6/lib/X11/fs/config"));
            if (!f.exists())
                f.setFileName(QLatin1String("/usr/X11/lib/X11/fs/config"));
            if (f.exists()) {
                f.open(QIODevice::ReadOnly);
                while (f.error()==QFile::NoError && !finished) {
                    QString fs = QString::fromLocal8Bit(f.readLine(1024));
                    fs=fs.trimmed();
                    if (fs.left(9)==QLatin1String("catalogue") && fs.contains(QLatin1Char('='))) {
                        fs = fs.mid(fs.indexOf(QLatin1Char('=')) + 1).trimmed();
                        bool end = false;
                        while (f.error()==QFile::NoError && !end) {
                            if (fs[int(fs.length())-1] == QLatin1Char(','))
                                fs = fs.left(fs.length()-1);
                            else
                                end = true;

                            fs = fs.left(fs.indexOf(QLatin1String(":unscaled")));
                            if (fs[0] != QLatin1Char('#'))
                                fontpath += fs;
                            fs = QLatin1String(f.readLine(1024));
                            fs = fs.trimmed();
                            if (fs.isEmpty())
                                end = true;
                        }
                        finished = true;
                    }
                }
                f.close();
            }
            xfsconfig_read = true;
        } else {
            QString fs = QString::fromLocal8Bit(font_path[i]);
            fontpath += fs.left(fs.indexOf(QLatin1String(":unscaled")));
        }
    }
    XFreeFontPath(font_path);

    // append qsettings fontpath
    QStringList fp = settings.value(QLatin1String("fontPath")).toStringList();
    if (!fp.isEmpty())
        fontpath += fp;

    qt_fontpath = new QStringList(fontpath);
    return fontpath;
}

maxIndex()

static int maxIndex ( XFontStruct *  f )

inlinestatic

Definition at line 548 of file qfontengine_x11.cpp.

Referenced by QFontEngineXLFD::minLeftBearing(), and QFontEngineXLFD::minRightBearing().

                                           {
    return (((f->max_byte1 - f->min_byte1) *
             (f->max_char_or_byte2 - f->min_char_or_byte2 + 1)) +
            f->max_char_or_byte2 - f->min_char_or_byte2);
}

qt_mib_for_xlfd_encoding()

int qt_mib_for_xlfd_encoding

(

const char *

encoding

)

Definition at line 394 of file qfontdatabase_x11.cpp.

Referenced by fontFile().

{
    int id = qt_xlfd_encoding_id(encoding);
    if (id != -1) return xlfd_encoding[id].mib;
    return 0;
}

qt_x11ft_convert_pattern()

Q_GUI_EXPORT void qt_x11ft_convert_pattern	(	FcPattern *	pattern,
		QByteArray *	file_name,
		int *	index,
		bool *	antialias
	)

Definition at line 958 of file qfontengine_x11.cpp.

Referenced by QFontEngineX11FT::QFontEngineX11FT().

{
    FcChar8 *fileName;
    FcPatternGetString(pattern, FC_FILE, 0, &fileName);
    *file_name = (const char *)fileName;
    if (!FcPatternGetInteger(pattern, FC_INDEX, 0, index))
        index = 0;
    FcBool b;
    if (FcPatternGetBool(pattern, FC_ANTIALIAS, 0, &b) == FcResultMatch)
        *antialias = b;
}

qt_xlfd_encoding_id()

int qt_xlfd_encoding_id

(

const char *

encoding

)

Definition at line 350 of file qfontdatabase_x11.cpp.

Referenced by fontFile(), loadXlfds(), and qt_mib_for_xlfd_encoding().

{
    // qDebug("looking for encoding id for '%s'", encoding);
    int len = strlen(encoding);
    if (len < 4)
        return -1;
    unsigned int hash1 = make_tag(encoding[0], encoding[1], encoding[2], encoding[3]);
    const char *ch = encoding + len - 4;
    unsigned int hash2 = make_tag(ch[0], ch[1], ch[2], ch[3]);

    const XlfdEncoding *enc = xlfd_encoding;
    for (; enc->name; ++enc) {
        if ((enc->hash1 && enc->hash1 != hash1) ||
            (enc->hash2 && enc->hash2 != hash2))
            continue;
        // hashes match, do a compare if strings match
        // the enc->name can contain '*'s we have to interpret correctly
        const char *n = enc->name;
        const char *e = encoding;
        while (1) {
            // qDebug("bol: *e='%c', *n='%c'", *e, *n);
            if (*e == '\0') {
                if (*n)
                    break;
                // qDebug("found encoding id %d", enc->id);
                return enc->id;
            }
            if (*e == *n) {
                ++e;
                ++n;
                continue;
            }
            if (*n != '*')
                break;
            ++n;
            // qDebug("skip: *e='%c', *n='%c'", *e, *n);
            while (*e && *e != *n)
                ++e;
        }
    }
    // qDebug("couldn't find encoding %s", encoding);
    return -1;
}

Variable Documentation

qt_fontpath

QStringList* qt_fontpath = 0

static

Definition at line 135 of file qfontengine_x11.cpp.

Referenced by fontPath().