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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 QWINDOWSFONTDATABASE_H
#define QWINDOWSFONTDATABASE_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 "qwindowsfontdatabasebase_p.h"
#include <qpa/qplatformfontdatabase.h>
#include <QtCore/QSharedPointer>
#include <QtCore/QLoggingCategory>
#include <QtCore/qhashfunctions.h>
#include <QtCore/qmutex.h>
#include <QtCore/qt_windows.h>
QT_BEGIN_NAMESPACE
class QDebug;
class Q_GUI_EXPORT QWindowsFontDatabase : public QWindowsFontDatabaseBase
{
Q_DISABLE_COPY_MOVE(QWindowsFontDatabase)
public:
enum FontOptions {
// Relevant bits from QWindowsIntegration::Options
DontUseDirectWriteFonts = 0x40,
DontUseColorFonts = 0x80
};
QWindowsFontDatabase();
~QWindowsFontDatabase() override;
void ensureFamilyPopulated(const QString &familyName);
void populateFontDatabase() override;
void invalidate() override;
void removeApplicationFonts();
bool supportsColrv0Fonts() const override;
void populateFamily(const QString &familyName) override;
bool populateFamilyAliases(const QString &missingFamily) override;
QFontEngine *fontEngine(const QFontDef &fontDef, void *handle) override;
QFontEngine *fontEngine(const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference) override;
QStringList fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QFontDatabasePrivate::ExtendedScript script) const override;
QStringList addApplicationFont(const QByteArray &fontData, const QString &fileName, QFontDatabasePrivate::ApplicationFont *applicationFont = nullptr) override;
void releaseHandle(void *handle) override;
QString fontDir() const override;
QFont defaultFont() const override { return systemDefaultFont(); }
bool fontsAlwaysScalable() const override;
void derefUniqueFont(const QString &uniqueFont);
void refUniqueFont(const QString &uniqueFont);
bool isPrivateFontFamily(const QString &family) const override;
static QFontEngine *createEngine(const QFontDef &request, const QString &faceName,
int dpi,
const QSharedPointer<QWindowsFontEngineData> &data);
static qreal fontSmoothingGamma();
static void setFontOptions(unsigned options);
static unsigned fontOptions();
#ifndef QT_NO_DEBUG_STREAM
static void debugFormat(QDebug &d, const LOGFONT &lf);
#endif // !QT_NO_DEBUG_STREAM
struct FontHandle {
FontHandle(const QString &name) : faceName(name) {}
#if QT_CONFIG(directwrite)
FontHandle(IDWriteFontFace *face, const QString &name);
#endif // !QT_NO_DIRECTWRITE
~FontHandle();
#if QT_CONFIG(directwrite)
IDWriteFontFace *fontFace = nullptr;
#endif // !QT_NO_DIRECTWRITE
QString faceName;
};
private:
void addDefaultEUDCFont();
struct WinApplicationFont {
HANDLE handle;
QString fileName;
};
QList<WinApplicationFont> m_applicationFonts;
struct UniqueFontData {
HANDLE handle;
int refCount;
};
QMutex m_uniqueFontDataMutex; // protects m_uniqueFontData
QMap<QString, UniqueFontData> m_uniqueFontData;
static unsigned m_fontOptions;
QStringList m_eudcFonts;
bool m_hasPopulatedAliases = false;
};
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug, const QFontDef &def);
#endif
inline quint16 qt_getUShort(const unsigned char *p)
{
quint16 val;
val = *p++ << 8;
val |= *p;
return val;
}
struct QFontNames
{
QString name; // e.g. "DejaVu Sans Condensed"
QString style; // e.g. "Italic"
QString preferredName; // e.g. "DejaVu Sans"
QString preferredStyle; // e.g. "Condensed Italic"
};
struct QFontValues
{
quint16 weight = 0;
bool isItalic = false;
bool isOverstruck = false;
bool isUnderlined = false;
};
bool qt_localizedName(const QString &name);
QString qt_getEnglishName(const QString &familyName, bool includeStyle = false);
QFontNames qt_getCanonicalFontNames(const LOGFONT &lf);
struct FontAndStyle {
QString font;
QString style;
friend inline bool operator==(const FontAndStyle &lhs, const FontAndStyle &rhs) noexcept
{ return lhs.font == rhs.font && lhs.style == rhs.style; }
friend inline bool operator!=(const FontAndStyle &lhs, const FontAndStyle &rhs) noexcept
{ return !operator==(lhs, rhs); }
};
inline size_t qHash(const FontAndStyle &key, size_t seed) noexcept
{
return qHashMulti(seed, key.font, key.style);
}
QT_END_NAMESPACE
#endif // QWINDOWSFONTDATABASE_H