--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/text/qfontengine_x11.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,1182 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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