src/gui/text/qfontengine_s60_p.h
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/text/qfontengine_s60_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,149 @@
+/****************************************************************************
+**
+** 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QFONTENGINE_S60_P_H
+#define QFONTENGINE_S60_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qconfig.h"
+#include "qfontengine_p.h"
+#include "qsize.h"
+#include <OPENFONT.H>
+
+class CFbsBitmap;
+class CFbsBitmapDevice;
+class CFbsBitGc;
+class CFont;
+
+QT_BEGIN_NAMESPACE
+
+// ..gives us access to truetype tables, UTF-16<->GlyphID mapping, and glyph outlines
+class QFontEngineS60Extensions
+{
+public:
+    QFontEngineS60Extensions(CFont* fontOwner, COpenFont *font);
+
+    QByteArray getSfntTable(uint tag) const;
+    const unsigned char *cmap() const;
+    QPainterPath glyphOutline(glyph_t glyph) const;
+    CFont *fontOwner() const;
+
+private:
+    COpenFont *m_font;
+    const MOpenFontShapingExtension *m_shapingExtension;
+    mutable MOpenFontTrueTypeExtension *m_trueTypeExtension;
+    mutable const unsigned char *m_cmap;
+    mutable bool m_symbolCMap;
+    mutable QByteArray m_cmapTable;
+    CFont* m_fontOwner;
+};
+
+class QFontEngineS60 : public QFontEngine
+{
+public:
+    QFontEngineS60(const QFontDef &fontDef, const QFontEngineS60Extensions *extensions);
+    ~QFontEngineS60();
+
+    bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;
+    void recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags flags) const;
+
+    QImage alphaMapForGlyph(glyph_t glyph);
+
+    glyph_metrics_t boundingBox(const QGlyphLayout &glyphs);
+    glyph_metrics_t boundingBox_const(glyph_t glyph) const; // Const correctnes quirk.
+    glyph_metrics_t boundingBox(glyph_t glyph);
+
+    QFixed ascent() const;
+    QFixed descent() const;
+    QFixed leading() const;
+    qreal maxCharWidth() const;
+    qreal minLeftBearing() const { return 0; }
+    qreal minRightBearing() const { return 0; }
+
+    QByteArray getSfntTable(uint tag) const;
+
+    static qreal pixelsToPoints(qreal pixels, Qt::Orientation orientation = Qt::Horizontal);
+    static qreal pointsToPixels(qreal points, Qt::Orientation orientation = Qt::Horizontal);
+
+    const char *name() const;
+
+    bool canRender(const QChar *string, int len);
+
+    Type type() const;
+
+    void getCharacterData(glyph_t glyph, TOpenFontCharMetrics& metrics, const TUint8*& bitmap, TSize& bitmapSize) const;
+
+private:
+    friend class QFontPrivate;
+
+    QFixed glyphAdvance(HB_Glyph glyph) const;
+
+    CFbsBitmap *m_textRenderBitmap;
+    CFbsBitmapDevice *m_textRenderBitmapDevice;
+    CFbsBitGc *m_textRenderBitmapGc;
+    CFont* m_font;
+    const QFontEngineS60Extensions *m_extensions;
+    qreal m_fontSizeInPixels;
+};
+
+class QFontEngineMultiS60 : public QFontEngineMulti
+{
+public:
+    QFontEngineMultiS60(QFontEngine *first, int script, const QStringList &fallbackFamilies);
+    void loadEngine(int at);
+
+    int m_script;
+    QStringList m_fallbackFamilies;
+};
+
+QT_END_NAMESPACE
+
+#endif // QFONTENGINE_S60_P_H