Make QtQuick2 compile on QPA

Moved the logic to set pixel size into the font engines to avoid
making the platform plugin interface too complex, and added a function
in QPA to make an isolated font engine based on font data. Currently
none of the QPA back-ends supports it, but it compiles and spits out
a warning if you try to create a QRawFont from data there. This isn't
used in QtQuick2 anyway.

Reviewed-by: Jiang Jiang

src/corelib/global/qglobal.h

@@ -2755,7 +2755,8 @@ QT_LICENSED_MODULE(DBus)
 
 #if !(defined(Q_WS_WIN) && !defined(Q_WS_WINCE)) \
     && !(defined(Q_WS_MAC) && defined(QT_MAC_USE_COCOA)) \
-    && !(defined(Q_WS_X11) && !defined(QT_NO_FREETYPE))
+    && !(defined(Q_WS_X11) && !defined(QT_NO_FREETYPE)) \
+    && !(defined(Q_WS_QPA))
 #  define QT_NO_RAWFONT
 #endif
 

src/gui/text/qfontengine_coretext.mm

@@ -837,6 +837,15 @@ QFixed QCoreTextFontEngine::emSquareSize() const
     return QFixed::QFixed(int(CTFontGetUnitsPerEm(ctfont)));
 }
 
+QFontEngine *QCoreTextFontEngine::cloneWithSize(qreal pixelSize) const
+{
+    QFontDef newFontDef = fontDef;
+    newFontDef.pixelSize = pixelSize;
+    newFontDef.pointSize = pixelSize * 72.0 / qt_defaultDpi();
+
+    return new QCoreTextFontEngine(cgFont, fontDef);
+}
+
 QT_END_NAMESPACE
 
 #endif// !defined(Q_WS_MAC) || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)

src/gui/text/qfontengine_coretext_p.h

@@ -91,6 +91,8 @@ public:
     virtual qreal minLeftBearing() const;
     virtual QFixed emSquareSize() const;
 
+    virtual QFontEngine *cloneWithSize(qreal pixelSize) const;
+
 private:
     friend class QRawFontPrivate;
 

src/gui/text/qfontengine_ft.cpp

@@ -2069,6 +2069,41 @@ HB_Error QFontEngineFT::getPointInOutline(HB_Glyph glyph, int flags, hb_uint32 p
     return result;
 }
 
+bool QFontEngineFT::initFromFontEngine(const QFontEngineFT *fe)
+{
+    if (!init(fe->faceId(), fe->antialias, fe->defaultFormat, fe->freetype))
+        return false;
+
+    // Increase the reference of this QFreetypeFace since one more QFontEngineFT
+    // will be using it
+    freetype->ref.ref();
+
+    default_load_flags = fe->default_load_flags;
+    default_hint_style = fe->default_hint_style;
+    antialias = fe->antialias;
+    transform = fe->transform;
+    embolden = fe->embolden;
+    subpixelType = fe->subpixelType;
+    lcdFilterType = fe->lcdFilterType;
+    canUploadGlyphsToServer = fe->canUploadGlyphsToServer;
+    embeddedbitmap = fe->embeddedbitmap;
+
+    return true;
+}
+
+QFontEngine *QFontEngineFT::cloneWithSize(qreal pixelSize) const
+{
+    QFontDef fontDef;
+    fontDef.pixelSize = pixelSize;
+    QFontEngineFT *fe = new QFontEngineFT(fontDef);
+    if (!fe->initFromFontEngine(this)) {
+        delete fe;
+        return 0;
+    } else {
+        return fe;
+    }
+}
+
 QT_END_NAMESPACE
 
 #endif // QT_NO_FREETYPE

src/gui/text/qfontengine_ft_p.h

@@ -122,7 +122,7 @@ struct QFreetypeFace
     static void addBitmapToPath(FT_GlyphSlot slot, const QFixedPoint &point, QPainterPath *path, bool = false);
 
 private:
-    friend class QFontEngineFTRawFont;
+    friend class QFontEngineFT;
     friend class QScopedPointerDeleter<QFreetypeFace>;
     QFreetypeFace() : _lock(QMutex::Recursive) {}
     ~QFreetypeFace() {}
@@ -311,7 +311,12 @@ private:
 
     virtual HB_Error getPointInOutline(HB_Glyph glyph, int flags, hb_uint32 point, HB_Fixed *xpos, HB_Fixed *ypos, hb_uint32 *nPoints);
 
+
     virtual void setDefaultHintStyle(HintStyle style);
+
+    virtual QFontEngine *cloneWithSize(qreal pixelSize) const;
+    bool initFromFontEngine(const QFontEngineFT *fontEngine);
+
     HintStyle defaultHintStyle() const { return default_hint_style; }
 protected:
 

src/gui/text/qfontengine_p.h

@@ -235,6 +235,8 @@ public:
 
     virtual int glyphCount() const;
 
+    virtual QFontEngine *cloneWithSize(qreal /*pixelSize*/) const { return 0; }
+
     HB_Font harfbuzzFont() const;
     HB_Face harfbuzzFace() const;
 

src/gui/text/qfontengine_win.cpp

@@ -1284,6 +1284,23 @@ QImage QFontEngineWin::alphaRGBMapForGlyph(glyph_t glyph, QFixed, int margin, co
     return rgbMask;
 }
 
+// From qfontdatabase_win.cpp
+extern QFontEngine *qt_load_font_engine_win(const QFontDef &request);
+QFontEngine *QFontEngineWin::cloneWithSize(qreal pixelSize) const
+{
+    QFontDef request = fontDef;
+    QString actualFontName = request.family;
+    if (!uniqueFamilyName.isEmpty())
+        request.family = uniqueFamilyName;
+    request.pixelSize = pixelSize;
+
+    QFontEngine *fontEngine = qt_load_font_engine_win(request);
+    if (fontEngine != NULL)
+        fontEngine->fontDef.family = actualFontName;
+
+    return fontEngine;
+}
+
 // -------------------------------------- Multi font engine
 
 QFontEngineMultiWin::QFontEngineMultiWin(QFontEngine *first, const QStringList &fallbacks)

src/gui/text/qfontengine_win_p.h

@@ -106,6 +106,8 @@ public:
     virtual QImage alphaMapForGlyph(glyph_t, const QTransform &xform);
     virtual QImage alphaRGBMapForGlyph(glyph_t t, QFixed subPixelPosition, int margin, const QTransform &xform);
 
+    virtual QFontEngine *cloneWithSize(qreal pixelSize) const;
+
 #ifndef Q_CC_MINGW
     virtual void getGlyphBearings(glyph_t glyph, qreal *leftBearing = 0, qreal *rightBearing = 0);
 #endif
@@ -118,6 +120,7 @@ public:
 #endif
 
     QString     _name;
+    QString     uniqueFamilyName;
     HFONT       hfont;
     LOGFONT     logfont;
     uint        stockFont  : 1;

src/gui/text/qfontengine_x11.cpp

@@ -1196,6 +1196,20 @@ bool QFontEngineX11FT::uploadGlyphToServer(QGlyphSet *set, uint glyphid, Glyph *
 #endif
 }
 
+QFontEngine *QFontEngineX11FT::cloneWithSize(qreal pixelSize) const
+{
+    QFontDef fontDef;
+    fontDef.pixelSize = pixelSize;
+    QFontEngineX11FT *fe = new QFontEngineX11FT(fontDef);
+    if (!fe->initFromFontEngine(this)) {
+        delete fe;
+        return 0;
+    } else {
+        fe->xglyph_format = xglyph_format;
+        return fe;
+    }
+}
+
 #endif // QT_NO_FONTCONFIG
 
 QT_END_NAMESPACE

src/gui/text/qfontengine_x11_p.h

@@ -161,6 +161,8 @@ public:
     explicit QFontEngineX11FT(FcPattern *pattern, const QFontDef &fd, int screen);
     ~QFontEngineX11FT();
 
+    QFontEngine *cloneWithSize(qreal pixelSize) const;
+
 #ifndef QT_NO_XRENDER
     int xglyph_format;
 #endif

src/gui/text/qfontenginedirectwrite.cpp

@@ -630,6 +630,17 @@ QFontEngine::Type QFontEngineDirectWrite::type() const
     return QFontEngine::DirectWrite;
 }
 
+QFontEngine *QFontEngineDirectWrite::cloneWithSize(qreal pixelSize) const
+{
+    QFontEngine *fontEngine = new QFontEngineDirectWrite(m_directWriteFactory, m_directWriteFontFace,
+                                                         pixelSize);
+
+    fontEngine->fontDef = fontDef;
+    fontEngine->fontDef.pixelSize = pixelSize;
+
+    return fontEngine;
+}
+
 QT_END_NAMESPACE
 
 #endif // QT_NO_DIRECTWRITE

src/gui/text/qfontenginedirectwrite_p.h

@@ -101,6 +101,8 @@ public:
     QImage alphaRGBMapForGlyph(glyph_t t, QFixed subPixelPosition, int margin,
                                const QTransform &xform);
 
+    QFontEngine *cloneWithSize(qreal pixelSize) const;
+
     bool canRender(const QChar *string, int len);
     Type type() const;
 

src/gui/text/qplatformfontdatabase_qpa.cpp

@@ -218,6 +218,16 @@ QFontEngine *QPlatformFontDatabase::fontEngine(const QFontDef &fontDef, QUnicode
     return engine;
 }
 
+QFontEngine *QPlatformFontDatabase::fontEngine(const QByteArray &fontData, qreal pixelSize,
+                                               QFont::HintingPreference hintingPreference)
+{
+    Q_UNUSED(fontData);
+    Q_UNUSED(pixelSize);
+    Q_UNUSED(hintingPreference);
+    qWarning("This plugin does not support font engines created directly from font data");
+    return 0;
+}
+
 /*!
 
 */

src/gui/text/qplatformfontdatabase_qpa.h

@@ -92,6 +92,8 @@ public:
     virtual QStringList addApplicationFont(const QByteArray &fontData, const QString &fileName);
     virtual void releaseHandle(void *handle);
 
+    virtual QFontEngine *fontEngine(const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference);
+
     virtual QString fontDir() const;
 
     //callback

src/gui/text/qrawfont.cpp

@@ -579,8 +579,19 @@ QRawFont QRawFont::fromFont(const QFont &font, QFontDatabase::WritingSystem writ
 */
 void QRawFont::setPixelSize(int pixelSize)
 {
+    if (d->fontEngine == 0)
+        return;
+
     detach();
-    d->platformSetPixelSize(pixelSize);
+    QFontEngine *oldFontEngine = d->fontEngine;
+
+    d->fontEngine = d->fontEngine->cloneWithSize(pixelSize);
+    if (d->fontEngine != 0)
+        d->fontEngine->ref.ref();
+
+    oldFontEngine->ref.deref();
+    if (oldFontEngine->cache_count == 0 && oldFontEngine->ref == 0)
+        delete oldFontEngine;
 }
 
 /*!

src/gui/text/qrawfont_ft.cpp

@@ -90,32 +90,6 @@ public:
 
         return init(faceId, true, Format_None, fontData);
     }
-
-    bool initFromFontEngine(QFontEngine *oldFontEngine)
-    {
-        QFontEngineFT *fe = static_cast<QFontEngineFT *>(oldFontEngine);
-
-        // Increase the reference of this QFreetypeFace since one more QFontEngineFT
-        // will be using it
-        fe->freetype->ref.ref();
-        if (!init(fe->faceId(), fe->antialias, fe->defaultFormat, fe->freetype))
-            return false;
-
-        default_load_flags = fe->default_load_flags;
-        default_hint_style = fe->default_hint_style;
-        antialias = fe->antialias;
-        transform = fe->transform;
-        embolden = fe->embolden;
-        subpixelType = fe->subpixelType;
-        lcdFilterType = fe->lcdFilterType;
-        canUploadGlyphsToServer = fe->canUploadGlyphsToServer;
-        embeddedbitmap = fe->embeddedbitmap;
-
-#if defined(Q_WS_X11)
-        xglyph_format = static_cast<QFontEngineX11FT *>(fe)->xglyph_format;
-#endif
-        return true;
-    }
 };
 
 
@@ -159,31 +133,6 @@ void QRawFontPrivate::platformLoadFromData(const QByteArray &fontData, int pixel
     fontEngine->ref.ref();
 }
 
-void QRawFontPrivate::platformSetPixelSize(int pixelSize)
-{
-    if (fontEngine == NULL)
-        return;
-
-    QFontEngine *oldFontEngine = fontEngine;
-
-    QFontDef fontDef;
-    fontDef.pixelSize = pixelSize;
-    QFontEngineFTRawFont *fe = new QFontEngineFTRawFont(fontDef);
-    if (!fe->initFromFontEngine(oldFontEngine)) {
-        delete fe;
-        return;
-    }
-
-    fontEngine = fe;
-    fontEngine->fontDef = oldFontEngine->fontDef;
-    fontEngine->fontDef.pixelSize = pixelSize;
-    fontEngine->ref.ref();
-    Q_ASSERT(fontEngine != oldFontEngine);
-    oldFontEngine->ref.deref();
-    if (oldFontEngine->cache_count == 0 && oldFontEngine->ref == 0)
-        delete oldFontEngine;
-}
-
 QT_END_NAMESPACE
 
 #endif // QT_NO_RAWFONT

src/gui/text/qrawfont_mac.cpp

@@ -78,28 +78,6 @@ void QRawFontPrivate::platformLoadFromData(const QByteArray &fontData,
     }
 }
 
-void QRawFontPrivate::platformSetPixelSize(int pixelSize)
-{
-    if (fontEngine == NULL)
-        return;
-
-    QFontEngine *oldFontEngine = fontEngine;
-
-    QFontDef fontDef = oldFontEngine->fontDef;
-    fontDef.pixelSize = pixelSize;
-    fontDef.pointSize = pixelSize * 72.0 / qt_defaultDpi();
-
-    QCoreTextFontEngine *ctFontEngine = static_cast<QCoreTextFontEngine *>(oldFontEngine);
-    Q_ASSERT(ctFontEngine->cgFont);
-
-    fontEngine = new QCoreTextFontEngine(ctFontEngine->cgFont, fontDef);
-    fontEngine->ref.ref();
-    Q_ASSERT(fontEngine != oldFontEngine);
-    oldFontEngine->ref.deref();
-    if (oldFontEngine->cache_count == 0 && oldFontEngine->ref == 0)
-        delete oldFontEngine;
-}
-
 QT_END_NAMESPACE
 
 #endif // QT_NO_RAWFONT

src/gui/text/qrawfont_p.h

@@ -83,7 +83,6 @@ public:
         , fontHandle(NULL)
         , ptrAddFontMemResourceEx(other.ptrAddFontMemResourceEx)
         , ptrRemoveFontMemResourceEx(other.ptrRemoveFontMemResourceEx)
-        , uniqueFamilyName(other.uniqueFamilyName)
 #endif
     {
         fontEngine = other.fontEngine;
@@ -102,7 +101,6 @@ public:
     void platformLoadFromData(const QByteArray &fontData,
                               int pixelSize,
                               QFont::HintingPreference hintingPreference);
-    void platformSetPixelSize(int pixelSize);
 
     static QRawFontPrivate *get(const QRawFont &font) { return font.d.data(); }
 
@@ -120,8 +118,6 @@ public:
     PtrAddFontMemResourceEx ptrAddFontMemResourceEx;
     PtrRemoveFontMemResourceEx ptrRemoveFontMemResourceEx;
 
-    QString uniqueFamilyName;
-
 #endif // Q_WS_WIN
 };
 

src/gui/text/qrawfont_qpa.cpp

@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 <QtCore/qglobal.h>
+
+#if !defined(QT_NO_RAWFONT)
+
+#include "qrawfont_p.h"
+#include <QtGui/qplatformfontdatabase_qpa.h>
+#include <private/qapplication_p.h>
+
+QT_BEGIN_NAMESPACE
+
+void QRawFontPrivate::platformCleanUp()
+{
+}
+
+void QRawFontPrivate::platformLoadFromData(const QByteArray &fontData, int pixelSize,
+                                           QFont::HintingPreference hintingPreference)
+{
+    Q_ASSERT(fontEngine == 0);
+
+    QPlatformFontDatabase *pfdb = QApplicationPrivate::platformIntegration()->fontDatabase();
+    fontEngine = pfdb->fontEngine(fontData, pixelSize, hintingPreference);
+    if (fontEngine != 0)
+        fontEngine->ref.ref();
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_RAWFONT

src/gui/text/qrawfont_win.cpp

@@ -559,7 +559,7 @@ void QRawFontPrivate::platformLoadFromData(const QByteArray &_fontData,
         GUID guid;
         CoCreateGuid(&guid);
 
-        uniqueFamilyName = QString::fromLatin1("f")
+        QString uniqueFamilyName = QString::fromLatin1("f")
                 + QString::number(guid.Data1, 36) + QLatin1Char('-')
                 + QString::number(guid.Data2, 36) + QLatin1Char('-')
                 + QString::number(guid.Data3, 36) + QLatin1Char('-')
@@ -613,6 +613,7 @@ void QRawFontPrivate::platformLoadFromData(const QByteArray &_fontData,
                 Q_ASSERT(fontEngine->cache_count == 0 && fontEngine->ref == 0);
 
                 // Override the generated font name
+                static_cast<QFontEngineWin *>(fontEngine)->uniqueFamilyName = uniqueFamilyName;
                 fontEngine->fontDef.family = actualFontName;
                 fontEngine->ref.ref();
             }
@@ -701,50 +702,6 @@ void QRawFontPrivate::platformLoadFromData(const QByteArray &_fontData,
     }
 }
 
-void QRawFontPrivate::platformSetPixelSize(int pixelSize)
-{
-    if (fontEngine == NULL)
-        return;
-
-    QFontEngine *oldFontEngine = fontEngine;
-
-#if !defined(QT_NO_DIRECTWRITE)
-    if (fontEngine->type() == QFontEngine::Win)
-#endif
-
-    {
-        QFontDef request = fontEngine->fontDef;
-        QString actualFontName = request.family;
-        if (!uniqueFamilyName.isEmpty())
-            request.family = uniqueFamilyName;
-        request.pixelSize = pixelSize;
-
-        fontEngine = qt_load_font_engine_win(request);
-        if (fontEngine != NULL) {
-            fontEngine->fontDef.family = actualFontName;
-            fontEngine->ref.ref();
-        }
-    }
-
-#if !defined(QT_NO_DIRECTWRITE)
-    else {
-        QFontEngineDirectWrite *dWriteFE = static_cast<QFontEngineDirectWrite *>(fontEngine);
-        fontEngine = new QFontEngineDirectWrite(dWriteFE->m_directWriteFactory,
-                                                dWriteFE->m_directWriteFontFace,
-                                                pixelSize);
-
-        fontEngine->fontDef = dWriteFE->fontDef;
-        fontEngine->fontDef.pixelSize = pixelSize;
-        fontEngine->ref.ref();
-    }
-#endif
-
-    Q_ASSERT(fontEngine != oldFontEngine);
-    oldFontEngine->ref.deref();
-    if (oldFontEngine->cache_count == 0 && oldFontEngine->ref == 0)
-        delete oldFontEngine;
-}
-
 QT_END_NAMESPACE
 
 #endif // QT_NO_RAWFONT

src/gui/text/text.pri

@@ -136,7 +136,8 @@ qpa {
 	SOURCES += \
                 text/qfont_qpa.cpp \
                 text/qfontengine_qpa.cpp \
-                text/qplatformfontdatabase_qpa.cpp
+                text/qplatformfontdatabase_qpa.cpp \
+                text/qrawfont_qpa.cpp
 
 	HEADERS += \
                 text/qplatformfontdatabase_qpa.h