Initial pluggable fontdatabase

QPlatformFontDatabase added. QPlatformIntegration now has a new virtual
function: QPlatformDatabase::fontDatabase() const. Most unix platform
plugins wants to follow the pattern implemented in directfb, linuxfb,
vnc etc. In the pro file do:
include(../fontdatabases/genericunix/genericunix.pri)

In the QPlatformIntegration class do:

and instansiate a QGenericFontDatabase in the constructor and return
it in the getter function.

Author: Jørgen Lind

configure

@@ -6093,6 +6093,30 @@ if [ "$PLATFORM_QPA" = "yes" ]; then
             exit 1
         fi
     fi
+
+    # auto-detect FontConfig support
+    if [ "$CFG_FONTCONFIG" != "no" ]; then
+        if [ -n "$PKG_CONFIG" ] && $PKG_CONFIG --exists fontconfig --exists freetype2 2>/dev/null; then
+            QT_CFLAGS_FONTCONFIG=`$PKG_CONFIG --cflags fontconfig --cflags freetype2 2>/dev/null`
+            QT_LIBS_FONTCONFIG=`$PKG_CONFIG --libs fontconfig --libs freetype2 2>/dev/null`
+        else
+            QT_CFLAGS_FONTCONFIG=
+            QT_LIBS_FONTCONFIG="-lfreetype -lfontconfig"
+        fi
+        if "$unixtests/compile.test" "$XQMAKESPEC" "$QMAKE_CONFIG" $OPT_VERBOSE "$relpath" "$outpath" config.tests/x11/fontconfig "FontConfig" $L_FLAGS $I_FLAGS $l_FLAGS $X11TESTS_FLAGS $QT_CFLAGS_FONTCONFIG $QT_LIBS_FONTCONFIG; then
+                QT_CONFIG="$QT_CONFIG fontconfig"
+                QMakeVar set QMAKE_CFLAGS_FONTCONFIG "$QT_CFLAGS_FONTCONFIG"
+                QMakeVar set QMAKE_LIBS_FONTCONFIG "$QT_LIBS_FONTCONFIG"
+                CFG_LIBFREETYPE=system
+        fi
+    fi
+
+    # MIT_SHM is required for testlite
+    if [ "$CFG_MITSHM" != "no" ]; then
+	if "$unixtests/compile.test" "$XQMAKESPEC" "$QMAKE_CONFIG" $OPT_VERBOSE "$relpath" "$outpath" config.tests/x11/mitshm "mitshm" $L_FLAGS $I_FLAGS $l_FLAGS $X11TESTS_FLAGS; then
+            QT_CONFIG="$QT_CONFIG mitshm"
+	fi
+    fi
 fi
 
 

lib/fonts/dejavu_sans_11_50.qpf2

@@ -41,6 +41,8 @@
 
 #include "qplatformintegration_qpa.h"
 
+#include <QtGui/QPlatformFontDatabase>
+
 QT_BEGIN_NAMESPACE
 
 QPixmap QPlatformIntegration::grabWindow(WId window, int x, int y, int width, int height) const
@@ -63,4 +65,13 @@ bool QPlatformIntegration::hasOpenGL() const
     return false;
 }
 
+QPlatformFontDatabase *QPlatformIntegration::fontDatabase() const
+{
+    static QPlatformFontDatabase *db = 0;
+    if (!db) {
+        db = new QPlatformFontDatabase;
+    }
+    return db;
+}
+
 QT_END_NAMESPACE

src/gui/kernel/qplatformintegration_qpa.cpp

@@ -58,6 +58,7 @@ class QWindowSurface;
 class QBlittable;
 class QWidget;
 class QPlatformEventLoopIntegration;
+class QPlatformFontDatabase;
 
 class Q_GUI_EXPORT QPlatformIntegration
 {
@@ -75,6 +76,9 @@ class Q_GUI_EXPORT QPlatformIntegration
     virtual bool isVirtualDesktop() { return false; }
     virtual QPixmap grabWindow(WId window, int x, int y, int width, int height) const;
 
+//Fontdatabase integration.
+    virtual QPlatformFontDatabase *fontDatabase() const;
+
 // Experimental in mainthread eventloop integration
 // This should only be used if it is only possible to do window system event processing in
 // the gui thread. All of the functions in QWindowSystemInterface are thread safe.

src/gui/kernel/qplatformintegration_qpa.h

@@ -272,7 +272,7 @@ class Q_GUI_EXPORT QPaintEngine
     friend class QProxyFontEngine;
 #endif
 #ifdef Q_WS_QPA
-    friend class QProxyFontEngine;
+    friend class QFontEngineQPA;
 #endif
     friend class QPainter;
     friend class QPainterPrivate;

src/gui/painting/qpaintengine.h

@@ -3396,9 +3396,36 @@ void QRasterPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
     }
 #endif // Q_WS_QWS
 
-#if (defined(Q_WS_X11) || defined(Q_WS_QWS) || defined(Q_OS_SYMBIAN) || defined(Q_WS_QPA)) && !defined(QT_NO_FREETYPE)
+#ifdef Q_WS_QPA
+    if (s->matrix.type() < QTransform::TxScale) {
 
-#if (defined(Q_WS_QWS) || defined(Q_WS_QPA)) && !defined(QT_NO_QWS_QPF2)
+        QVarLengthArray<QFixedPoint> positions;
+        QVarLengthArray<glyph_t> glyphs;
+        QTransform matrix = state()->transform();
+
+        qreal _x = qFloor(p.x() + aliasedCoordinateDelta);
+        qreal _y = qFloor(p.y() + aliasedCoordinateDelta);
+        matrix.translate(_x, _y);
+
+        fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+        if (glyphs.size() == 0)
+            return;
+
+        for(int i = 0; i < glyphs.size(); i++) {
+            QImage img = fontEngine->alphaMapForGlyph(glyphs[i]);
+            glyph_metrics_t metrics = fontEngine->boundingBox(glyphs[i]);
+            alphaPenBlt(img.bits(), img.bytesPerLine(), img.depth(),
+                                         qRound(positions[i].x + metrics.x),
+                                         qRound(positions[i].y + metrics.y),
+                                         img.width(), img.height());
+        }
+        return;
+    }
+#endif //Q_WS_QPA
+
+#if (defined(Q_WS_X11) || defined(Q_WS_QWS) || defined(Q_OS_SYMBIAN)) && !defined(QT_NO_FREETYPE)
+
+#if defined(Q_WS_QWS) && !defined(QT_NO_QWS_QPF2)
     if (fontEngine->type() == QFontEngine::QPF2) {
         QFontEngine *renderingEngine = static_cast<QFontEngineQPF *>(fontEngine)->renderingEngine();
         if (renderingEngine)

src/gui/painting/qpaintengine_raster.cpp

@@ -916,7 +916,7 @@ const char *QPdf::paperSizeToString(QPrinter::PaperSize paperSize)
 }
 
 
-QByteArray QPdf::stripSpecialCharacters(const QByteArray &string)
+Q_GUI_EXPORT QByteArray QPdf::stripSpecialCharacters(const QByteArray &string)
 {
     QByteArray s = string;
     s.replace(' ', "");

src/gui/painting/qpdf.cpp

@@ -46,7 +46,7 @@
 #include <QtCore/qstring.h>
 #include <QtCore/qsharedpointer.h>
 
-#if defined(Q_WS_X11) || defined(Q_WS_QWS) || defined(Q_WS_QPA)
+#if defined(Q_WS_X11) || defined(Q_WS_QWS)
 typedef struct FT_FaceRec_* FT_Face;
 #endif
 
@@ -236,7 +236,7 @@ class Q_GUI_EXPORT QFont
 #ifdef Q_WS_MAC
     quint32 macFontID() const;
 #endif
-#if defined(Q_WS_X11) || defined(Q_WS_QWS) || defined(Q_WS_QPA)
+#if defined(Q_WS_X11) || defined(Q_WS_QWS)
     FT_Face freetypeFace() const;
 #endif
 

src/gui/text/qfont.h

@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation ([email protected])
+**
+** 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 [email protected].
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui/private/qapplication_p.h>
+#include <QtGui/QPlatformFontDatabase>
+
+QT_BEGIN_NAMESPACE
+
+void QFont::initialize()
+{
+    QApplicationPrivate::platformIntegration()->fontDatabase()->populateFontDatabase();
+}
+
+void QFont::cleanup()
+{
+    QFontCache::cleanup();
+}
+
+
+/*****************************************************************************
+  QFont member functions
+ *****************************************************************************/
+
+Qt::HANDLE QFont::handle() const
+{
+    return 0;
+}
+
+QString QFont::rawName() const
+{
+    return QLatin1String("unknown");
+}
+
+void QFont::setRawName(const QString &)
+{
+}
+
+QString QFont::defaultFamily() const
+{
+    QString familyName;
+    switch(d->request.styleHint) {
+        case QFont::Times:
+            familyName = QString::fromLatin1("times");
+        case QFont::Courier:
+        case QFont::Monospace:
+            familyName = QString::fromLatin1("monospace");
+        case QFont::Decorative:
+            familyName = QString::fromLatin1("old english");
+        case QFont::Helvetica:
+        case QFont::System:
+        default:
+            familyName = QString::fromLatin1("helvetica");
+    }
+
+    QStringList list = QApplicationPrivate::platformIntegration()->fontDatabase()->fallbacksForFamily(familyName,QFont::StyleNormal,QUnicodeTables::Common);
+    if (list.size()) {
+        familyName = list.at(0);
+    }
+    return familyName;
+}
+
+QString QFont::lastResortFamily() const
+{
+    return QString::fromLatin1("helvetica");
+}
+
+QString QFont::lastResortFont() const
+{
+    qFatal("QFont::lastResortFont: Cannot find any reasonable font");
+    // Shut compiler up
+    return QString();
+}
+
+
+QT_END_NAMESPACE
+