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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QWINDOWSFONTENGINE_H
#define QWINDOWSFONTENGINE_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 <QtGui/private/qfontengine_p.h>
#include <QtGui/QImage>
#include <QtCore/QSharedPointer>
#include <QtCore/QMetaType>
#include <QtCore/qt_windows.h>
QT_BEGIN_NAMESPACE
class QWindowsNativeImage;
class QWindowsFontEngineData;
class QWindowsFontEngine : public QFontEngine
{
Q_DISABLE_COPY_MOVE(QWindowsFontEngine)
public:
QWindowsFontEngine(const QString &name, LOGFONT lf,
const QSharedPointer<QWindowsFontEngineData> &fontEngineData);
~QWindowsFontEngine() override;
void initFontInfo(const QFontDef &request,
int dpi);
QFixed lineThickness() const override;
Properties properties() const override;
void getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics) override;
FaceId faceId() const override;
bool getSfntTableData(uint tag, uchar *buffer, uint *length) const override;
int synthesized() const override;
QFixed emSquareSize() const override;
glyph_t glyphIndex(uint ucs4) const override;
bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, ShaperFlags flags) const override;
void recalcAdvances(QGlyphLayout *glyphs, ShaperFlags) const override;
void addOutlineToPath(qreal x, qreal y, const QGlyphLayout &glyphs, QPainterPath *path, QTextItem::RenderFlags flags) override;
void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs,
QPainterPath *path, QTextItem::RenderFlags flags) override;
HGDIOBJ selectDesignFont() const;
glyph_metrics_t boundingBox(const QGlyphLayout &glyphs) override;
glyph_metrics_t boundingBox(glyph_t g) override { return boundingBox(g, QTransform()); }
glyph_metrics_t boundingBox(glyph_t g, const QTransform &t) override;
QFixed xHeight() const override;
QFixed capHeight() const override;
QFixed averageCharWidth() const override;
qreal maxCharWidth() const override;
qreal minLeftBearing() const override;
qreal minRightBearing() const override;
QImage alphaMapForGlyph(glyph_t t) override { return alphaMapForGlyph(t, QTransform()); }
QImage alphaMapForGlyph(glyph_t, const QTransform &xform) override;
QImage alphaRGBMapForGlyph(glyph_t t,
const QFixedPoint &subPixelPosition,
const QTransform &xform) override;
glyph_metrics_t alphaMapBoundingBox(glyph_t glyph,
const QFixedPoint &,
const QTransform &matrix,
GlyphFormat) override;
QFontEngine *cloneWithSize(qreal pixelSize) const override;
Qt::HANDLE handle() const override;
bool supportsTransformation(const QTransform &transform) const override;
#ifndef Q_CC_MINGW
void getGlyphBearings(glyph_t glyph, qreal *leftBearing = nullptr, qreal *rightBearing = nullptr) override;
#endif
bool hasUnreliableGlyphOutline() const override;
int getGlyphIndexes(const QChar *ch, int numChars, QGlyphLayout *glyphs) const;
void getCMap();
bool getOutlineMetrics(glyph_t glyph, const QTransform &t, glyph_metrics_t *metrics) const;
const QSharedPointer<QWindowsFontEngineData> &fontEngineData() const { return m_fontEngineData; }
void setUniqueFamilyName(const QString &newName) { uniqueFamilyName = newName; }
protected:
void initializeHeightMetrics() const override;
private:
QWindowsNativeImage *drawGDIGlyph(HFONT font, glyph_t, int margin, const QTransform &xform,
QImage::Format mask_format);
bool hasCFFTable() const;
bool hasCMapTable() const;
const QSharedPointer<QWindowsFontEngineData> m_fontEngineData;
const QString _name;
QString uniqueFamilyName;
HFONT hfont = 0;
const LOGFONT m_logfont;
uint ttf : 1;
uint hasOutline : 1;
uint hasUnreliableOutline : 1;
uint cffTable : 1;
TEXTMETRIC tm;
const unsigned char *cmap = nullptr;
int cmapSize = 0;
QByteArray cmapTable;
mutable qreal lbearing = SHRT_MIN;
mutable qreal rbearing = SHRT_MIN;
QFixed designToDevice;
int unitsPerEm = 0;
QFixed x_height = -1;
FaceId _faceId;
mutable int synthesized_flags = -1;
mutable QFixed lineWidth = -1;
mutable unsigned char *widthCache = nullptr;
mutable uint widthCacheSize = 0;
mutable QFixed *designAdvances = nullptr;
mutable int designAdvancesSize = 0;
};
QT_END_NAMESPACE
Q_DECLARE_METATYPE(HFONT)
Q_DECLARE_METATYPE(LOGFONT)
#endif // QWINDOWSFONTENGINE_H
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