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diff --git a/src/gui/text/windows/qwindowsfontengine_p.h b/src/gui/text/windows/qwindowsfontengine_p.h
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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#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;
+ int 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(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, int *mappedGlyphs) 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
+
+QT_DECL_METATYPE_EXTERN(HFONT, Q_GUI_EXPORT)
+QT_DECL_METATYPE_EXTERN(LOGFONT, Q_GUI_EXPORT)
+
+#endif // QWINDOWSFONTENGINE_H