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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
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Long live Qt 4.5!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTFONTENGINE_QWS_H
+#define QABSTRACTFONTENGINE_QWS_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qhash.h>
+#include <QtCore/qvariant.h>
+#include <QtCore/qfactoryinterface.h>
+#include <QtGui/qpaintengine.h>
+#include <QtGui/qfontdatabase.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QFontEngineInfoPrivate;
+
+class Q_GUI_EXPORT QFontEngineInfo
+{
+public:
+ QDOC_PROPERTY(QString family READ family WRITE setFamily)
+ QDOC_PROPERTY(qreal pixelSize READ pixelSize WRITE setPixelSize)
+ QDOC_PROPERTY(int weight READ weight WRITE setWeight)
+ QDOC_PROPERTY(QFont::Style style READ style WRITE setStyle)
+ QDOC_PROPERTY(QList<QFontDatabase::WritingSystem> writingSystems READ writingSystems WRITE setWritingSystems)
+
+ QFontEngineInfo();
+ explicit QFontEngineInfo(const QString &family);
+ QFontEngineInfo(const QFontEngineInfo &other);
+ QFontEngineInfo &operator=(const QFontEngineInfo &other);
+ ~QFontEngineInfo();
+
+ void setFamily(const QString &name);
+ QString family() const;
+
+ void setPixelSize(qreal size);
+ qreal pixelSize() const;
+
+ void setWeight(int weight);
+ int weight() const;
+
+ void setStyle(QFont::Style style);
+ QFont::Style style() const;
+
+ QList<QFontDatabase::WritingSystem> writingSystems() const;
+ void setWritingSystems(const QList<QFontDatabase::WritingSystem> &writingSystems);
+
+private:
+ QFontEngineInfoPrivate *d;
+};
+
+class QAbstractFontEngine;
+
+struct Q_GUI_EXPORT QFontEngineFactoryInterface : public QFactoryInterface
+{
+ virtual QAbstractFontEngine *create(const QFontEngineInfo &info) = 0;
+ virtual QList<QFontEngineInfo> availableFontEngines() const = 0;
+};
+
+#define QFontEngineFactoryInterface_iid "com.trolltech.Qt.QFontEngineFactoryInterface"
+Q_DECLARE_INTERFACE(QFontEngineFactoryInterface, QFontEngineFactoryInterface_iid)
+
+class QFontEnginePluginPrivate;
+
+class Q_GUI_EXPORT QFontEnginePlugin : public QObject, public QFontEngineFactoryInterface
+{
+ Q_OBJECT
+ Q_INTERFACES(QFontEngineFactoryInterface:QFactoryInterface)
+public:
+ QFontEnginePlugin(const QString &foundry, QObject *parent = 0);
+ ~QFontEnginePlugin();
+
+ virtual QStringList keys() const;
+
+ virtual QAbstractFontEngine *create(const QFontEngineInfo &info) = 0;
+ virtual QList<QFontEngineInfo> availableFontEngines() const = 0;
+
+private:
+ Q_DECLARE_PRIVATE(QFontEnginePlugin)
+ Q_DISABLE_COPY(QFontEnginePlugin)
+};
+
+class QAbstractFontEnginePrivate;
+
+class Q_GUI_EXPORT QAbstractFontEngine : public QObject
+{
+ Q_OBJECT
+public:
+ enum Capability {
+ CanOutlineGlyphs = 1,
+ CanRenderGlyphs_Mono = 2,
+ CanRenderGlyphs_Gray = 4,
+ CanRenderGlyphs = CanRenderGlyphs_Mono | CanRenderGlyphs_Gray
+ };
+ Q_DECLARE_FLAGS(Capabilities, Capability)
+
+ explicit QAbstractFontEngine(QObject *parent = 0);
+ ~QAbstractFontEngine();
+
+ typedef int Fixed; // 26.6
+
+ struct FixedPoint
+ {
+ Fixed x;
+ Fixed y;
+ };
+
+ struct GlyphMetrics
+ {
+ inline GlyphMetrics()
+ : x(0), y(0), width(0), height(0),
+ advance(0) {}
+ Fixed x;
+ Fixed y;
+ Fixed width;
+ Fixed height;
+ Fixed advance;
+ };
+
+ enum FontProperty {
+ Ascent,
+ Descent,
+ Leading,
+ XHeight,
+ AverageCharWidth,
+ LineThickness,
+ UnderlinePosition,
+ MaxCharWidth,
+ MinLeftBearing,
+ MinRightBearing,
+ GlyphCount,
+
+ // hints
+ CacheGlyphsHint,
+ OutlineGlyphsHint
+ };
+
+ // keep in sync with QTextEngine::ShaperFlag!!
+ enum TextShapingFlag {
+ RightToLeft = 0x0001,
+ ReturnDesignMetrics = 0x0002
+ };
+ Q_DECLARE_FLAGS(TextShapingFlags, TextShapingFlag)
+
+ virtual Capabilities capabilities() const = 0;
+ virtual QVariant fontProperty(FontProperty property) const = 0;
+
+ virtual bool convertStringToGlyphIndices(const QChar *string, int length, uint *glyphs, int *numGlyphs, TextShapingFlags flags) const = 0;
+
+ virtual void getGlyphAdvances(const uint *glyphs, int numGlyphs, Fixed *advances, TextShapingFlags flags) const = 0;
+
+ virtual GlyphMetrics glyphMetrics(uint glyph) const = 0;
+
+ virtual bool renderGlyph(uint glyph, int depth, int bytesPerLine, int height, uchar *buffer);
+
+ virtual void addGlyphOutlinesToPath(uint *glyphs, int numGlyphs, FixedPoint *positions, QPainterPath *path);
+
+ /*
+ enum Extension {
+ GetTrueTypeTable
+ };
+
+ virtual bool supportsExtension(Extension extension) const;
+ virtual QVariant extension(Extension extension, const QVariant &argument = QVariant());
+ */
+
+private:
+ Q_DECLARE_PRIVATE(QAbstractFontEngine)
+ Q_DISABLE_COPY(QAbstractFontEngine)
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QAbstractFontEngine::Capabilities)
+Q_DECLARE_OPERATORS_FOR_FLAGS(QAbstractFontEngine::TextShapingFlags)
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif