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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QFONTENGINE_CORETEXT_P_H
#define QFONTENGINE_CORETEXT_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 <private/qfontengine_p.h>
#include <private/qcore_mac_p.h>
#ifndef Q_OS_IOS
#include <ApplicationServices/ApplicationServices.h>
#else
#include <CoreText/CoreText.h>
#include <CoreGraphics/CoreGraphics.h>
#endif
QT_BEGIN_NAMESPACE
class QCoreTextFontEngine : public QFontEngine
{
public:
QCoreTextFontEngine(CTFontRef font, const QFontDef &def);
QCoreTextFontEngine(CGFontRef font, const QFontDef &def);
~QCoreTextFontEngine();
glyph_t glyphIndex(uint ucs4) const Q_DECL_OVERRIDE;
bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, ShaperFlags flags) const Q_DECL_OVERRIDE;
void recalcAdvances(QGlyphLayout *, ShaperFlags) const Q_DECL_OVERRIDE;
glyph_metrics_t boundingBox(const QGlyphLayout &glyphs) Q_DECL_OVERRIDE;
glyph_metrics_t boundingBox(glyph_t glyph) Q_DECL_OVERRIDE;
QFixed ascent() const Q_DECL_OVERRIDE;
QFixed descent() const Q_DECL_OVERRIDE;
QFixed leading() const Q_DECL_OVERRIDE;
QFixed xHeight() const Q_DECL_OVERRIDE;
qreal maxCharWidth() const Q_DECL_OVERRIDE;
QFixed averageCharWidth() const Q_DECL_OVERRIDE;
void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int numGlyphs,
QPainterPath *path, QTextItem::RenderFlags) Q_DECL_OVERRIDE;
bool canRender(const QChar *string, int len) const Q_DECL_OVERRIDE;
int synthesized() const Q_DECL_OVERRIDE { return synthesisFlags; }
bool supportsSubPixelPositions() const Q_DECL_OVERRIDE { return true; }
void draw(CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight);
FaceId faceId() const Q_DECL_OVERRIDE;
bool getSfntTableData(uint /*tag*/, uchar * /*buffer*/, uint * /*length*/) const Q_DECL_OVERRIDE;
void getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics) Q_DECL_OVERRIDE;
QImage alphaMapForGlyph(glyph_t, QFixed subPixelPosition) Q_DECL_OVERRIDE;
QImage alphaMapForGlyph(glyph_t glyph, QFixed subPixelPosition, const QTransform &t) Q_DECL_OVERRIDE;
QImage alphaRGBMapForGlyph(glyph_t, QFixed subPixelPosition, const QTransform &t) Q_DECL_OVERRIDE;
glyph_metrics_t alphaMapBoundingBox(glyph_t glyph, QFixed, const QTransform &matrix, GlyphFormat) Q_DECL_OVERRIDE;
QImage bitmapForGlyph(glyph_t, QFixed subPixelPosition, const QTransform &t) Q_DECL_OVERRIDE;
QFixed emSquareSize() const Q_DECL_OVERRIDE;
bool supportsTransformation(const QTransform &transform) const Q_DECL_OVERRIDE;
QFontEngine *cloneWithSize(qreal pixelSize) const Q_DECL_OVERRIDE;
Qt::HANDLE handle() const Q_DECL_OVERRIDE;
int glyphMargin(QFontEngine::GlyphFormat format) Q_DECL_OVERRIDE { Q_UNUSED(format); return 0; }
QFontEngine::Properties properties() const Q_DECL_OVERRIDE;
static bool ct_getSfntTable(void *user_data, uint tag, uchar *buffer, uint *length);
static QFont::Weight qtWeightFromCFWeight(float value);
static int antialiasingThreshold;
static QFontEngine::GlyphFormat defaultGlyphFormat;
private:
void init();
QImage imageForGlyph(glyph_t glyph, QFixed subPixelPosition, bool colorful, const QTransform &m);
CTFontRef ctfont;
CGFontRef cgFont;
int synthesisFlags;
CGAffineTransform transform;
QFixed avgCharWidth;
QFontEngine::FaceId face_id;
};
CGAffineTransform qt_transform_from_fontdef(const QFontDef &fontDef);
QT_END_NAMESPACE
#endif // QFONTENGINE_CORETEXT_P_H
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