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**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** contained in the Technology Preview License Agreement accompanying
** this package.
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** General Public License version 2.1 as published by the Free Software
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** packaging of this file. Please review the following information to
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**
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****************************************************************************/
#include "qbitmap.h"
// #define FONTENGINE_DEBUG
#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>
#if defined(FT_LCD_FILTER_H)
#include FT_LCD_FILTER_H
#endif
#if defined(FC_LCD_FILTER)
#ifndef FC_LCD_FILTER_NONE
#define FC_LCD_FILTER_NONE FC_LCD_NONE
#endif
#ifndef FC_LCD_FILTER_DEFAULT
#define FC_LCD_FILTER_DEFAULT FC_LCD_DEFAULT
#endif
#ifndef FC_LCD_FILTER_LIGHT
#define FC_LCD_FILTER_LIGHT FC_LCD_LIGHT
#endif
#ifndef FC_LCD_FILTER_LEGACY
#define FC_LCD_FILTER_LEGACY FC_LCD_LEGACY
#endif
#endif
QT_BEGIN_NAMESPACE
// ------------------------------------------------------------------
// Multi XLFD engine
// ------------------------------------------------------------------
QFontEngineMultiXLFD::QFontEngineMultiXLFD(const QFontDef &r, const QList<int> &l, int s)
: QFontEngineMulti(l.size()), encodings(l), screen(s), request(r)
{
loadEngine(0);
fontDef = engines[0]->fontDef;
}
QFontEngineMultiXLFD::~QFontEngineMultiXLFD()
{ }
void QFontEngineMultiXLFD::loadEngine(int at)
{
Q_ASSERT(at < engines.size());
Q_ASSERT(engines.at(at) == 0);
const int encoding = encodings.at(at);
QFontEngine *fontEngine = QFontDatabase::loadXlfd(0, QUnicodeTables::Common, request, encoding);
Q_ASSERT(fontEngine != 0);
fontEngine->ref.ref();
engines[at] = fontEngine;
}
// ------------------------------------------------------------------
// Xlfd font engine
// ------------------------------------------------------------------
#ifndef QT_NO_FREETYPE
static QStringList *qt_fontpath = 0;
static QStringList fontPath()
{
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;
}
static QFontEngine::FaceId fontFile(const QByteArray &_xname, QFreetypeFace **freetype, int *synth)
{
*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;
}
#endif // QT_NO_FREETYPE
// defined in qfontdatabase_x11.cpp
extern int qt_mib_for_xlfd_encoding(const char *encoding);
extern int qt_xlfd_encoding_id(const char *encoding);
static inline XCharStruct *charStruct(XFontStruct *xfs, uint ch)
{
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;
}
QFontEngineXLFD::QFontEngineXLFD(XFontStruct *fs, const QByteArray &name, int mib)
: _fs(fs), _name(name), _codec(0), _cmap(mib)
{
if (_cmap) _codec = QTextCodec::codecForMib(_cmap);
cache_cost = (((fs->max_byte1 - fs->min_byte1) *
(fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1)) +
fs->max_char_or_byte2 - fs->min_char_or_byte2);
cache_cost = ((fs->max_bounds.ascent + fs->max_bounds.descent) *
(fs->max_bounds.width * cache_cost / 8));
lbearing = SHRT_MIN;
rbearing = SHRT_MIN;
face_id.index = -1;
freetype = 0;
synth = 0;
}
QFontEngineXLFD::~QFontEngineXLFD()
{
XFreeFont(QX11Info::display(), _fs);
_fs = 0;
#ifndef QT_NO_FREETYPE
if (freetype)
freetype->release(face_id);
#endif
}
bool QFontEngineXLFD::stringToCMap(const QChar *s, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const
{
if (*nglyphs < len) {
*nglyphs = len;
return false;
}
// filter out surrogates, we can't handle them anyway with XLFD fonts
QVarLengthArray<ushort> _s(len);
QChar *str = (QChar *)_s.data();
for (int i = 0; i < len; ++i) {
if (i < len - 1
&& s[i].unicode() >= 0xd800 && s[i].unicode() < 0xdc00
&& s[i+1].unicode() >= 0xdc00 && s[i].unicode() < 0xe000) {
*str = QChar();
++i;
} else {
*str = s[i];
}
++str;
}
len = str - (QChar *)_s.data();
str = (QChar *)_s.data();
bool mirrored = flags & QTextEngine::RightToLeft;
if (_codec) {
bool haveNbsp = false;
for (int i = 0; i < len; i++)
if (str[i].unicode() == 0xa0) {
haveNbsp = true;
break;
}
QVarLengthArray<unsigned short> ch(len);
QChar *chars = (QChar *)ch.data();
if (haveNbsp || mirrored) {
for (int i = 0; i < len; i++)
chars[i] = (str[i].unicode() == 0xa0 ? 0x20 :
(mirrored ? QChar::mirroredChar(str[i].unicode()) : str[i].unicode()));
} else {
for (int i = 0; i < len; i++)
chars[i] = str[i].unicode();
}
QTextCodec::ConverterState state;
state.flags = QTextCodec::ConvertInvalidToNull;
QByteArray ba = _codec->fromUnicode(chars, len, &state);
if (ba.length() == 2*len) {
// double byte encoding
const uchar *data = (const uchar *)ba.constData();
for (int i = 0; i < len; i++) {
glyphs->glyphs[i] = ((ushort)data[0] << 8) + data[1];
data += 2;
}
} else {
const uchar *data = (const uchar *)ba.constData();
for (int i = 0; i < len; i++)
glyphs->glyphs[i] = (ushort)data[i];
}
} else {
int i = len;
const QChar *c = str + len;
if (mirrored) {
while (c != str)
glyphs->glyphs[--i] = (--c)->unicode() == 0xa0 ? 0x20 : QChar::mirroredChar(c->unicode());
} else {
while (c != str)
glyphs->glyphs[--i] = (--c)->unicode() == 0xa0 ? 0x20 : c->unicode();
}
}
*nglyphs = len;
glyphs->numGlyphs = len;
if (!(flags & QTextEngine::GlyphIndicesOnly))
recalcAdvances(glyphs, flags);
return true;
}
void QFontEngineXLFD::recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags /*flags*/) const
{
int i = glyphs->numGlyphs;
XCharStruct *xcs;
// inlined for better perfomance
if (!_fs->per_char) {
xcs = &_fs->min_bounds;
while (i != 0) {
--i;
const unsigned char r = glyphs->glyphs[i] >> 8;
const unsigned char c = glyphs->glyphs[i] & 0xff;
if (r >= _fs->min_byte1 &&
r <= _fs->max_byte1 &&
c >= _fs->min_char_or_byte2 &&
c <= _fs->max_char_or_byte2) {
glyphs->advances_x[i] = xcs->width;
} else {
glyphs->glyphs[i] = 0;
}
}
}
else if (!_fs->max_byte1) {
XCharStruct *base = _fs->per_char - _fs->min_char_or_byte2;
while (i != 0) {
unsigned int gl = glyphs->glyphs[--i];
xcs = (gl >= _fs->min_char_or_byte2 && gl <= _fs->max_char_or_byte2) ?
base + gl : 0;
if (!xcs || (!xcs->width && !xcs->ascent && !xcs->descent)) {
glyphs->glyphs[i] = 0;
} else {
glyphs->advances_x[i] = xcs->width;
}
}
}
else {
while (i != 0) {
xcs = charStruct(_fs, glyphs->glyphs[--i]);
if (!xcs) {
glyphs->glyphs[i] = 0;
} else {
glyphs->advances_x[i] = xcs->width;
}
}
}
}
glyph_metrics_t QFontEngineXLFD::boundingBox(const QGlyphLayout &glyphs)
{
int i;
glyph_metrics_t overall;
// initialize with line height, we get the same behaviour on all platforms
overall.y = -ascent();
overall.height = ascent() + descent() + 1;
QFixed ymax;
QFixed xmax;
for (i = 0; i < glyphs.numGlyphs; i++) {
XCharStruct *xcs = charStruct(_fs, glyphs.glyphs[i]);
if (xcs) {
QFixed x = overall.xoff + glyphs.offsets[i].x + xcs->lbearing;
QFixed y = overall.yoff + glyphs.offsets[i].y - xcs->ascent;
overall.x = qMin(overall.x, x);
overall.y = qMin(overall.y, y);
// XCharStruct::rbearing is defined as distance from left edge to rightmost pixel
xmax = qMax(xmax, overall.xoff + glyphs.offsets[i].x + xcs->rbearing);
ymax = qMax(ymax, y + xcs->ascent + xcs->descent);
overall.xoff += glyphs.advances_x[i] + QFixed::fromFixed(glyphs.justifications[i].space_18d6);
} else {
QFixed size = _fs->ascent;
overall.x = qMin(overall.x, overall.xoff);
overall.y = qMin(overall.y, overall.yoff - size);
ymax = qMax(ymax, overall.yoff);
overall.xoff += size;
xmax = qMax(xmax, overall.xoff);
}
}
overall.height = qMax(overall.height, ymax - overall.y);
overall.width = xmax - overall.x;
return overall;
}
glyph_metrics_t QFontEngineXLFD::boundingBox(glyph_t glyph)
{
glyph_metrics_t gm;
XCharStruct *xcs = charStruct(_fs, glyph);
if (xcs) {
// XCharStruct::rbearing is defined as distance from left edge to rightmost pixel
// XCharStruct::width is defined as the advance
gm = glyph_metrics_t(xcs->lbearing, -xcs->ascent, xcs->rbearing- xcs->lbearing, xcs->ascent + xcs->descent,
xcs->width, 0);
} else {
QFixed size = ascent();
gm = glyph_metrics_t(0, size, size, size, size, 0);
}
return gm;
}
QFixed QFontEngineXLFD::ascent() const
{
return _fs->ascent;
}
QFixed QFontEngineXLFD::descent() const
{
return (_fs->descent-1);
}
QFixed QFontEngineXLFD::leading() const
{
QFixed l = QFixed(qMin<int>(_fs->ascent, _fs->max_bounds.ascent)
+ qMin<int>(_fs->descent, _fs->max_bounds.descent)) * QFixed::fromReal(0.15);
return l.ceil();
}
qreal QFontEngineXLFD::maxCharWidth() const
{
return _fs->max_bounds.width;
}
// Loads the font for the specified script
static inline int maxIndex(XFontStruct *f) {
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);
}
qreal QFontEngineXLFD::minLeftBearing() const
{
if (lbearing == SHRT_MIN) {
if (_fs->per_char) {
XCharStruct *cs = _fs->per_char;
int nc = maxIndex(_fs) + 1;
int mx = cs->lbearing;
for (int c = 1; c < nc; c++) {
// ignore the bearings for characters whose ink is
// completely outside the normal bounding box
if ((cs[c].lbearing <= 0 && cs[c].rbearing <= 0) ||
(cs[c].lbearing >= cs[c].width && cs[c].rbearing >= cs[c].width))
continue;
int nmx = cs[c].lbearing;
if (nmx < mx)
mx = nmx;
}
((QFontEngineXLFD *)this)->lbearing = mx;
} else
((QFontEngineXLFD *)this)->lbearing = _fs->min_bounds.lbearing;
}
return lbearing;
}
qreal QFontEngineXLFD::minRightBearing() const
{
if (rbearing == SHRT_MIN) {
if (_fs->per_char) {
XCharStruct *cs = _fs->per_char;
int nc = maxIndex(_fs) + 1;
int mx = cs->rbearing;
for (int c = 1; c < nc; c++) {
// ignore the bearings for characters whose ink is
// completely outside the normal bounding box
if ((cs[c].lbearing <= 0 && cs[c].rbearing <= 0) ||
(cs[c].lbearing >= cs[c].width && cs[c].rbearing >= cs[c].width))
continue;
int nmx = cs[c].rbearing;
if (nmx < mx)
mx = nmx;
}
((QFontEngineXLFD *)this)->rbearing = mx;
} else
((QFontEngineXLFD *)this)->rbearing = _fs->min_bounds.rbearing;
}
return rbearing;
}
const char *QFontEngineXLFD::name() const
{
return _name;
}
bool QFontEngineXLFD::canRender(const QChar *string, int len)
{
QVarLengthGlyphLayoutArray glyphs(len);
int nglyphs = len;
if (stringToCMap(string, len, &glyphs, &nglyphs, 0) == false) {
glyphs.resize(nglyphs);
stringToCMap(string, len, &glyphs, &nglyphs, 0);
}
bool allExist = true;
for (int i = 0; i < nglyphs; i++) {
if (!glyphs.glyphs[i] || !charStruct(_fs, glyphs.glyphs[i])) {
allExist = false;
break;
}
}
return allExist;
}
QBitmap QFontEngineXLFD::bitmapForGlyphs(const QGlyphLayout &glyphs, const glyph_metrics_t &metrics, QTextItem::RenderFlags flags)
{
int w = metrics.width.toInt();
int h = metrics.height.toInt();
if (w <= 0 || h <= 0)
return QBitmap();
QPixmapData *data = new QX11PixmapData(QPixmapData::BitmapType);
data->resize(w, h);
QPixmap bm(data);
QPainter p(&bm);
p.fillRect(0, 0, w, h, Qt::color0);
p.setPen(Qt::color1);
QTextItemInt item;
item.flags = flags;
item.ascent = -metrics.y;
item.descent = metrics.height - item.ascent;
item.width = metrics.width;
item.chars = 0;
item.num_chars = 0;
item.logClusters = 0;
item.glyphs = glyphs;
item.fontEngine = this;
item.f = 0;
p.drawTextItem(QPointF(-metrics.x.toReal(), item.ascent.toReal()), item);
p.end();
return QBitmap(bm);
}
void QFontEngineXLFD::addOutlineToPath(qreal x, qreal y, const QGlyphLayout &glyphs, QPainterPath *path, QTextItem::RenderFlags flags)
{
// cannot use QFontEngine::addBitmapFontToPath(), since we don't
// have direct access to the glyph bitmaps, so we have to draw
// onto a QBitmap, then convert to QImage, then to path
glyph_metrics_t metrics = boundingBox(glyphs);
QImage image = bitmapForGlyphs(glyphs, metrics, flags).toImage();
if (image.isNull())
return;
image = image.convertToFormat(QImage::Format_Mono);
const uchar *image_data = image.bits();
uint bpl = image.bytesPerLine();
// from qfontengine.cpp
extern void qt_addBitmapToPath(qreal x0, qreal y0, const uchar *image_data,
int bpl, int w, int h, QPainterPath *path);
qt_addBitmapToPath(x, y + metrics.y.toReal(), image_data, bpl, image.width(), image.height(), path);
}
QFontEngine::FaceId QFontEngineXLFD::faceId() const
{
#ifndef QT_NO_FREETYPE
if (face_id.index == -1) {
face_id = fontFile(_name, &freetype, &synth);
if (_codec)
face_id.encoding = _codec->mibEnum();
if (freetype) {
const_cast<QFontEngineXLFD *>(this)->fsType = freetype->fsType();
} else {
face_id.index = 0;
face_id.filename = '-' + QFontEngine::properties().postscriptName;
}
}
#endif
return face_id;
}
QFontEngine::Properties QFontEngineXLFD::properties() const
{
if (face_id.index == -1)
(void)faceId();
#ifndef QT_NO_FREETYPE
if (freetype)
return freetype->properties();
#endif
return QFontEngine::properties();
}
void QFontEngineXLFD::getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics)
{
if (face_id.index == -1)
(void)faceId();
#ifndef QT_NO_FREETYPE
if (!freetype)
#endif
{
QFontEngine::getUnscaledGlyph(glyph, path, metrics);
return;
}
#ifndef QT_NO_FREETYPE
freetype->lock();
FT_Face face = freetype->face;
FT_Set_Char_Size(face, face->units_per_EM << 6, face->units_per_EM << 6, 0, 0);
freetype->xsize = face->units_per_EM << 6;
freetype->ysize = face->units_per_EM << 6;
FT_Set_Transform(face, 0, 0);
glyph = glyphIndexToFreetypeGlyphIndex(glyph);
FT_Load_Glyph(face, glyph, FT_LOAD_NO_BITMAP);
int left = face->glyph->metrics.horiBearingX;
int right = face->glyph->metrics.horiBearingX + face->glyph->metrics.width;
int top = face->glyph->metrics.horiBearingY;
int bottom = face->glyph->metrics.horiBearingY - face->glyph->metrics.height;
QFixedPoint p;
p.x = 0;
p.y = 0;
metrics->width = QFixed::fromFixed(right-left);
metrics->height = QFixed::fromFixed(top-bottom);
metrics->x = QFixed::fromFixed(left);
metrics->y = QFixed::fromFixed(-top);
metrics->xoff = QFixed::fromFixed(face->glyph->advance.x);
if (!FT_IS_SCALABLE(freetype->face))
QFreetypeFace::addBitmapToPath(face->glyph, p, path);
else
QFreetypeFace::addGlyphToPath(face, face->glyph, p, path, face->units_per_EM << 6, face->units_per_EM << 6);
FT_Set_Transform(face, &freetype->matrix, 0);
freetype->unlock();
#endif // QT_NO_FREETYPE
}
bool QFontEngineXLFD::getSfntTableData(uint tag, uchar *buffer, uint *length) const
{
#ifndef QT_NO_FREETYPE
if (face_id.index == -1)
(void)faceId();
if (!freetype)
return false;
return freetype->getSfntTable(tag, buffer, length);
#else
Q_UNUSED(tag);
Q_UNUSED(buffer);
Q_UNUSED(length);
return false;
#endif
}
int QFontEngineXLFD::synthesized() const
{
return synth;
}
QImage QFontEngineXLFD::alphaMapForGlyph(glyph_t glyph)
{
glyph_metrics_t metrics = boundingBox(glyph);
/*
printf("a) w=%.2f, h=%.2f, xoff=%.2f, yoff=%.2f, x=%.2f, y=%.2f\n",
metrics.width.toReal(),
metrics.height.toReal(),
metrics.xoff.toReal(),
metrics.yoff.toReal(),
metrics.x.toReal(),
metrics.y.toReal());
*/
QGlyphLayoutArray<1> glyphs;
glyphs.glyphs[0] = glyph;
QImage image = bitmapForGlyphs(glyphs, metrics).toImage();
//image.save(QString::fromLatin1("x11cache-%1.png").arg((int)glyph));
image = image.convertToFormat(QImage::Format_Indexed8);
QVector<QRgb> colors(256);
for (int i = 0; i < 256; ++i)
colors[i] = qRgba(0, 0, 0, i);
image.setColorTable(colors);
int width = image.width();
int height = image.height();
for (int y = 0; y < height; ++y) {
uchar *bits = image.scanLine(y);
for (int x = 0; x < width; ++x)
bits[x] = ~(bits[x]-1);
}
return image;
}
#ifndef QT_NO_FREETYPE
FT_Face QFontEngineXLFD::non_locked_face() const
{
return freetype ? freetype->face : 0;
}
uint QFontEngineXLFD::toUnicode(glyph_t g) const
{
if (_codec) {
QTextCodec::ConverterState state;
state.flags = QTextCodec::ConvertInvalidToNull;
uchar data[2];
int l = 1;
if (g > 255) {
data[0] = (g >> 8);
data[1] = (g & 255);
l = 2;
} else {
data[0] = g;
}
QString s = _codec->toUnicode((char *)data, l, &state);
Q_ASSERT(s.length() == 1);
g = s.at(0).unicode();
}
return g;
}
glyph_t QFontEngineXLFD::glyphIndexToFreetypeGlyphIndex(glyph_t g) const
{
return FT_Get_Char_Index(freetype->face, toUnicode(g));
}
#endif
#ifndef QT_NO_FONTCONFIG
// ------------------------------------------------------------------
// Multi FT engine
// ------------------------------------------------------------------
static QFontEngine *engineForPattern(FcPattern *pattern, const QFontDef &request,
int screen)
{
FcResult res;
FcPattern *match = FcFontMatch(0, pattern, &res);
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;
}
QFontEngineMultiFT::QFontEngineMultiFT(QFontEngine *fe, FcPattern *matchedPattern, FcPattern *p, int s, const QFontDef &req)
: QFontEngineMulti(2), request(req), pattern(p), firstEnginePattern(matchedPattern), fontSet(0), screen(s)
{
engines[0] = fe;
engines.at(0)->ref.ref();
fontDef = engines[0]->fontDef;
cache_cost = 100;
firstFontIndex = 1;
}
QFontEngineMultiFT::~QFontEngineMultiFT()
{
extern QMutex *qt_fontdatabase_mutex();
QMutexLocker locker(qt_fontdatabase_mutex());
FcPatternDestroy(pattern);
if (firstEnginePattern)
FcPatternDestroy(firstEnginePattern);
if (fontSet)
FcFontSetDestroy(fontSet);
}
void QFontEngineMultiFT::loadEngine(int at)
{
extern QMutex *qt_fontdatabase_mutex();
QMutexLocker locker(qt_fontdatabase_mutex());
extern void qt_addPatternProps(FcPattern *pattern, int screen, int script,
const QFontDef &request);
extern QFontDef qt_FcPatternToQFontDef(FcPattern *pattern, const QFontDef &);
extern FcFontSet *qt_fontSetForPattern(FcPattern *pattern, const QFontDef &request);
Q_ASSERT(at > 0);
if (!fontSet) {
fontSet = qt_fontSetForPattern(pattern, request);
// it may happen that the fontset of fallbacks consists of only one font. In this case we
// have to fall back to the box fontengine as we cannot render the glyph.
if (fontSet->nfont == 1 && at == 1 && engines.size() == 2) {
Q_ASSERT(engines.at(at) == 0);
QFontEngine *fe = new QFontEngineBox(request.pixelSize);
fe->fontDef = request;
engines[at] = fe;
return;
}
if (firstEnginePattern) {
if (!FcPatternEqual(firstEnginePattern, fontSet->fonts[0]))
firstFontIndex = 0;
FcPatternDestroy(firstEnginePattern);
firstEnginePattern = 0;
}
engines.resize(fontSet->nfont + 1 - firstFontIndex);
}
Q_ASSERT(at < engines.size());
Q_ASSERT(engines.at(at) == 0);
FcPattern *pattern = FcPatternDuplicate(fontSet->fonts[at + firstFontIndex - 1]);
qt_addPatternProps(pattern, screen, QUnicodeTables::Common, request);
QFontDef fontDef = qt_FcPatternToQFontDef(pattern, this->request);
// note: we use -1 for the script to make sure that we keep real
// FT engines separate from Multi engines in the font cache
QFontCache::Key key(fontDef, -1, screen);
QFontEngine *fontEngine = QFontCache::instance()->findEngine(key);
if (!fontEngine) {
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
fontEngine = engineForPattern(pattern, request, screen);
QFontCache::instance()->insertEngine(key, fontEngine);
}
FcPatternDestroy(pattern);
fontEngine->ref.ref();
engines[at] = fontEngine;
}
// ------------------------------------------------------------------
// X11 FT engine
// ------------------------------------------------------------------
Q_GUI_EXPORT void qt_x11ft_convert_pattern(FcPattern *pattern, QByteArray *file_name, int *index, bool *antialias)
{
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;
}
QFontEngineX11FT::QFontEngineX11FT(FcPattern *pattern, const QFontDef &fd, int screen)
: QFontEngineFT(fd)
{
// FcPatternPrint(pattern);
bool antialias = X11->fc_antialias;
QByteArray file_name;
int face_index;
qt_x11ft_convert_pattern(pattern, &file_name, &face_index, &antialias);
QFontEngine::FaceId face_id;
face_id.filename = file_name;
face_id.index = face_index;
canUploadGlyphsToServer = qApp->thread() == QThread::currentThread();
subpixelType = Subpixel_None;
if (antialias) {
int subpixel = X11->display ? X11->screens[screen].subpixel : FC_RGBA_UNKNOWN;
if (subpixel == FC_RGBA_UNKNOWN)
(void) FcPatternGetInteger(pattern, FC_RGBA, 0, &subpixel);
if (!antialias || subpixel == FC_RGBA_UNKNOWN)
subpixel = FC_RGBA_NONE;
switch (subpixel) {
case FC_RGBA_NONE: subpixelType = Subpixel_None; break;
case FC_RGBA_RGB: subpixelType = Subpixel_RGB; break;
case FC_RGBA_BGR: subpixelType = Subpixel_BGR; break;
case FC_RGBA_VRGB: subpixelType = Subpixel_VRGB; break;
case FC_RGBA_VBGR: subpixelType = Subpixel_VBGR; break;
default: break;
}
}
#ifdef FC_HINT_STYLE
{
int hint_style = 0;
if (FcPatternGetInteger (pattern, FC_HINT_STYLE, 0, &hint_style) == FcResultNoMatch)
hint_style = X11->fc_hint_style;
switch (hint_style) {
case FC_HINT_NONE:
default_hint_style = HintNone;
break;
case FC_HINT_SLIGHT:
default_hint_style = HintLight;
break;
case FC_HINT_MEDIUM:
default_hint_style = HintMedium;
break;
default:
default_hint_style = HintFull;
break;
}
}
#endif
#if defined(FC_AUTOHINT) && defined(FT_LOAD_FORCE_AUTOHINT)
{
bool autohint = false;
FcBool b;
if (FcPatternGetBool(pattern, FC_AUTOHINT, 0, &b) == FcResultMatch)
autohint = b;
if (autohint)
default_load_flags |= FT_LOAD_FORCE_AUTOHINT;
}
#endif
#if defined(FC_LCD_FILTER) && defined(FT_LCD_FILTER_H)
{
int filter = FC_LCD_FILTER_NONE;
if (FcPatternGetInteger(pattern, FC_LCD_FILTER, 0, &filter) == FcResultMatch) {
switch (filter) {
case FC_LCD_FILTER_NONE:
lcdFilterType = FT_LCD_FILTER_NONE;
break;
case FC_LCD_FILTER_DEFAULT:
lcdFilterType = FT_LCD_FILTER_DEFAULT;
break;
case FC_LCD_FILTER_LIGHT:
lcdFilterType = FT_LCD_FILTER_LIGHT;
break;
case FC_LCD_FILTER_LEGACY:
lcdFilterType = FT_LCD_FILTER_LEGACY;
break;
default:
// new unknown lcd filter type?!
break;
}
}
}
#endif
#ifdef FC_EMBEDDED_BITMAP
{
FcBool b;
if (FcPatternGetBool(pattern, FC_EMBEDDED_BITMAP, 0, &b) == FcResultMatch)
embeddedbitmap = b;
}
#endif
GlyphFormat defaultFormat = Format_None;
#ifndef QT_NO_XRENDER
if (X11->use_xrender) {
int format = PictStandardA8;
if (!antialias)
format = PictStandardA1;
else if (subpixelType == Subpixel_RGB
|| subpixelType == Subpixel_BGR
|| subpixelType == Subpixel_VRGB
|| subpixelType == Subpixel_VBGR)
format = PictStandardARGB32;
xglyph_format = format;
if (subpixelType != QFontEngineFT::Subpixel_None)
defaultFormat = Format_A32;
else if (antialias)
defaultFormat = Format_A8;
else
defaultFormat = Format_Mono;
}
#endif
if (!init(face_id, antialias, defaultFormat)) {
FcPatternDestroy(pattern);
return;
}
if (!freetype->charset) {
FcCharSet *cs;
FcPatternGetCharSet (pattern, FC_CHARSET, 0, &cs);
freetype->charset = FcCharSetCopy(cs);
}
FcPatternDestroy(pattern);
}
QFontEngineX11FT::~QFontEngineX11FT()
{
freeGlyphSets();
}
unsigned long QFontEngineX11FT::allocateServerGlyphSet()
{
#ifndef QT_NO_XRENDER
if (!canUploadGlyphsToServer || !X11->use_xrender)
return 0;
return XRenderCreateGlyphSet(X11->display, XRenderFindStandardFormat(X11->display, xglyph_format));
#else
return 0;
#endif
}
void QFontEngineX11FT::freeServerGlyphSet(unsigned long id)
{
#ifndef QT_NO_XRENDER
if (!id)
return;
XRenderFreeGlyphSet(X11->display, id);
#endif
}
bool QFontEngineX11FT::uploadGlyphToServer(QGlyphSet *set, uint glyphid, Glyph *g, GlyphInfo *info, int glyphDataSize) const
{
#ifndef QT_NO_XRENDER
if (!canUploadGlyphsToServer)
return false;
if (g->format == Format_Mono) {
/*
* swap bit order around; FreeType is always MSBFirst
*/
if (BitmapBitOrder(X11->display) != MSBFirst) {
unsigned char *line = g->data;
int i = glyphDataSize;
while (i--) {
unsigned char c;
c = *line;
c = ((c << 1) & 0xaa) | ((c >> 1) & 0x55);
c = ((c << 2) & 0xcc) | ((c >> 2) & 0x33);
c = ((c << 4) & 0xf0) | ((c >> 4) & 0x0f);
*line++ = c;
}
}
}
::Glyph xglyph = glyphid;
XRenderAddGlyphs (X11->display, set->id, &xglyph, info, 1, (const char *)g->data, glyphDataSize);
delete [] g->data;
g->data = 0;
g->format = Format_None;
g->uploadedToServer = true;
return true;
#else
return false;
#endif
}
#endif // QT_NO_FONTCONFIG
QT_END_NAMESPACE