| 1 | // Copyright (C) 2023 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QFONTICONENGINE_H |
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| 5 | #define QFONTICONENGINE_H |
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| 6 | |
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| 7 | #include <QtGui/qiconengine.h> |
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| 8 | |
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| 9 | #ifndef QT_NO_ICON |
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| 10 | // |
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| 11 | // W A R N I N G |
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| 12 | // ------------- |
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| 13 | // |
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| 14 | // This file is not part of the Qt API. It exists purely as an |
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| 15 | // implementation detail. This header file may change from version to |
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| 16 | // version without notice, or even be removed. |
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| 17 | // |
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| 18 | // We mean it. |
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| 19 | // |
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| 20 | |
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| 21 | #include <QtGui/qfont.h> |
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| 22 | |
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| 23 | QT_BEGIN_NAMESPACE |
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| 24 | |
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| 25 | using glyph_t = quint32; |
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| 26 | |
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| 27 | class Q_GUI_EXPORT QFontIconEngine : public QIconEngine |
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| 28 | { |
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| 29 | public: |
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| 30 | QFontIconEngine(const QString &iconName, const QFont &font); |
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| 31 | ~QFontIconEngine(); |
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| 32 | |
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| 33 | QString iconName() override; |
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| 34 | bool isNull() override; |
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| 35 | QString key() const override; |
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| 36 | QIconEngine *clone() const override; |
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| 37 | |
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| 38 | QList<QSize> availableSizes(QIcon::Mode, QIcon::State) override; |
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| 39 | QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) override; |
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| 40 | QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) override; |
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| 41 | QPixmap scaledPixmap(const QSize &size, QIcon::Mode mode, QIcon::State state, qreal scale) override; |
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| 42 | void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) override; |
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| 43 | |
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| 44 | protected: |
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| 45 | virtual QString string() const; |
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| 46 | virtual glyph_t glyph() const; |
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| 47 | |
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| 48 | private: |
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| 49 | static constexpr quint64 calculateCacheKey(QIcon::Mode mode, QIcon::State state) |
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| 50 | { |
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| 51 | return (quint64(mode) << 32) | state; |
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| 52 | } |
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| 53 | |
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| 54 | const QString m_iconName; |
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| 55 | const QFont m_iconFont; |
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| 56 | mutable QPixmap m_pixmap; |
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| 57 | mutable quint64 m_pixmapCacheKey = {}; |
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| 58 | static constexpr glyph_t uninitializedGlyph = std::numeric_limits<glyph_t>::max(); |
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| 59 | mutable glyph_t m_glyph = uninitializedGlyph; |
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| 60 | }; |
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| 61 | |
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| 62 | QT_END_NAMESPACE |
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| 63 | |
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| 64 | #endif // QT_NO_ICON |
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| 65 | |
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| 66 | #endif // QFONTICONENGINE_H |
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| 67 | |
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