1 files changed, 140 insertions, 0 deletions
diff --git a/src/gui/text/windows/qwindowsfontenginedirectwrite_p.h b/src/gui/text/windows/qwindowsfontenginedirectwrite_p.h
new file mode 100644
index 0000000000..d7c9a79267
--- /dev/null
+++ b/src/gui/text/windows/qwindowsfontenginedirectwrite_p.h
@@ -0,0 +1,140 @@
+// 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 QWINDOWSFONTENGINEDIRECTWRITE_H
+#define QWINDOWSFONTENGINEDIRECTWRITE_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/qtguiglobal.h>
+#include <QtGui/private/qtgui-config_p.h>
+
+QT_REQUIRE_CONFIG(directwrite);
+
+#include <QtGui/private/qfontengine_p.h>
+#include <QtCore/QSharedPointer>
+#include <dwrite.h>
+
+struct IDWriteFont;
+struct IDWriteFontFace;
+struct IDWriteFontFile;
+struct IDWriteFactory;
+struct IDWriteBitmapRenderTarget;
+struct IDWriteGdiInterop;
+struct IDWriteGlyphRunAnalysis;
+
+QT_BEGIN_NAMESPACE
+
+class QWindowsFontEngineData;
+
+class Q_GUI_EXPORT QWindowsFontEngineDirectWrite : public QFontEngine
+{
+    Q_DISABLE_COPY_MOVE(QWindowsFontEngineDirectWrite)
+public:
+    explicit QWindowsFontEngineDirectWrite(IDWriteFontFace *directWriteFontFace,
+                                    qreal pixelSize,
+                                    const QSharedPointer<QWindowsFontEngineData> &d);
+    ~QWindowsFontEngineDirectWrite() override;
+
+    void initFontInfo(const QFontDef &request, int dpi);
+
+    QFixed lineThickness() const override;
+    QFixed underlinePosition() const override;
+    bool getSfntTableData(uint tag, uchar *buffer, uint *length) 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 addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs,
+                         QPainterPath *path, QTextItem::RenderFlags flags) override;
+
+    glyph_metrics_t boundingBox(const QGlyphLayout &glyphs) override;
+    glyph_metrics_t boundingBox(glyph_t g) override;
+    glyph_metrics_t alphaMapBoundingBox(glyph_t glyph, const QFixedPoint&,
+                                        const QTransform &matrix, GlyphFormat) override;
+
+    QFixed capHeight() const override;
+    QFixed xHeight() const override;
+    qreal maxCharWidth() const override;
+    FaceId faceId() const override;
+
+    bool supportsHorizontalSubPixelPositions() const override;
+
+    HFONT createHFONT() const;
+
+    QImage alphaMapForGlyph(glyph_t glyph, const QFixedPoint &subPixelPosition) override;
+    QImage alphaMapForGlyph(glyph_t glyph,
+                            const QFixedPoint &subPixelPosition,
+                            const QTransform &t) override;
+    QImage alphaRGBMapForGlyph(glyph_t t,
+                               const QFixedPoint &subPixelPosition,
+                               const QTransform &xform) override;
+    QImage bitmapForGlyph(glyph_t,
+                          const QFixedPoint &subPixelPosition,
+                          const QTransform &t,
+                          const QColor &color) override;
+
+    QFontEngine *cloneWithSize(qreal pixelSize) const override;
+    Qt::HANDLE handle() const override;
+
+    const QSharedPointer<QWindowsFontEngineData> &fontEngineData() const { return m_fontEngineData; }
+
+    static QString fontNameSubstitute(const QString &familyName);
+
+    IDWriteFontFace *directWriteFontFace() const { return m_directWriteFontFace; }
+
+    void setUniqueFamilyName(const QString &newName) { m_uniqueFamilyName = newName; }
+
+    void initializeHeightMetrics() const override;
+
+    Properties properties() const override;
+    void getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics) override;
+
+private:
+    QImage imageForGlyph(glyph_t t,
+                         const QFixedPoint &subPixelPosition,
+                         int margin,
+                         const QTransform &xform,
+                         const QColor &color = QColor());
+    void collectMetrics();
+    void renderGlyphRun(QImage *destination,
+                        float r,
+                        float g,
+                        float b,
+                        float a,
+                        IDWriteGlyphRunAnalysis *glyphAnalysis,
+                        const QRect &boundingRect,
+                        DWRITE_RENDERING_MODE renderMode);
+    static QString filenameFromFontFile(IDWriteFontFile *fontFile);
+    DWRITE_RENDERING_MODE hintingPreferenceToRenderingMode(const QFontDef &fontDef) const;
+
+    const QSharedPointer<QWindowsFontEngineData> m_fontEngineData;
+
+    IDWriteFontFace *m_directWriteFontFace;
+    IDWriteBitmapRenderTarget *m_directWriteBitmapRenderTarget;
+
+    QFixed m_lineThickness;
+    QFixed m_underlinePosition;
+    int m_unitsPerEm;
+    QFixed m_capHeight;
+    QFixed m_xHeight;
+    QFixed m_maxAdvanceWidth;
+    FaceId m_faceId;
+    QString m_uniqueFamilyName;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSFONTENGINEDIRECTWRITE_H