qt-everywhere-src-5.15.1/qttools/src/shared/fontpanel/fontpanel.h

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//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of the Qt tools.  This header
// file may change from version to version without notice, or even be removed.
//
// We mean it.
//

#ifndef FONTPANEL_H
#define FONTPANEL_H

#include <QtWidgets/QGroupBox>
#include <QtGui/QFont>
#include <QtGui/QFontDatabase>

QT_BEGIN_NAMESPACE

class QComboBox;
class QFontComboBox;
class QTimer;
class QLineEdit;

class FontPanel: public QGroupBox
{
    Q_OBJECT
public:
    FontPanel(QWidget *parentWidget = 0);

    QFont selectedFont() const;
    void setSelectedFont(const QFont &);

    QFontDatabase::WritingSystem writingSystem() const;
    void setWritingSystem(QFontDatabase::WritingSystem ws);

private slots:
    void slotWritingSystemChanged(int);
    void slotFamilyChanged(const QFont &);
    void slotStyleChanged(int);
    void slotPointSizeChanged(int);
    void slotUpdatePreviewFont();

private:
    QString family() const;
    QString styleString() const;
    int pointSize() const;
    int closestPointSizeIndex(int ps) const;

    void updateWritingSystem(QFontDatabase::WritingSystem ws);
    void updateFamily(const QString &family);
    void updatePointSizes(const QString &family, const QString &style);
    void delayedPreviewFontUpdate();

    QFontDatabase m_fontDatabase;
    QLineEdit *m_previewLineEdit;
    QComboBox *m_writingSystemComboBox;
    QFontComboBox* m_familyComboBox;
    QComboBox *m_styleComboBox;
    QComboBox *m_pointSizeComboBox;
    QTimer *m_previewFontUpdateTimer;
};

QT_END_NAMESPACE

#endif // FONTPANEL_H