qohosplatformtheme.h

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// Copyright (C) 2025 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 QOHOSPLATFORMTHEME_H
#define QOHOSPLATFORMTHEME_H
 
#include <QtCore/qfileinfo.h>
#include <QtCore/qhash.h>
#include <QtCore/qmap.h>
#include <QtGui/qcolor.h>
#include <QtGui/qicon.h>
#include <QtGui/qpalette.h>
#include <functional>
#include <memory>
#include <optional>
#include <qpa/qplatformtheme.h>
#include <qpa/qplatformdialoghelper.h>
 
QT_BEGIN_NAMESPACE
 
template<typename T>
using QOhosSupplier = std::function<T()>;
 
class QOhosPlatformTheme : public QPlatformTheme
{
public:
 
    static constexpr int defaultWheelScrollLines = 3;
 
    QOhosPlatformTheme();
 
    void requestColorScheme(Qt::ColorScheme scheme) override;
    Qt::ColorScheme colorScheme() const override;
 
    QPlatformDialogHelper *createPlatformDialogHelper(DialogType type) const override;
    bool usePlatformNativeDialog(DialogType type) const override;
    QVariant themeHint(ThemeHint hint) const override;
 
    const QPalette *palette(Palette type) const override;
    const QFont *font(Font type) const override;
    void setWheelScrollLines(int wheelScrollLines);
 
    QPlatformSystemTrayIcon *createPlatformSystemTrayIcon() const override;
 
    QIcon fileIcon(const QFileInfo &fileInfo, QPlatformTheme::IconOptions iconOptions) const override;
    QIconEngine *createIconEngine(const QString &iconName) const override;
 
private:
    void refreshPalettes();
 
    QHash<Palette, QPalette> m_themePalette;
    QOhosSupplier<std::shared_ptr<const QHash<Font, QFont>>> m_fontsSupplier;
    int m_wheelScrollLines;
    QOhosSupplier<std::optional<bool>> m_ohosConfigDarkModeFlagSupplier;
    QOhosSupplier<QColor> m_ohosAccentColorSupplier;
};
 
QT_END_NAMESPACE
 
#endif // QOHOSPLATFORMTHEME_H