qproxystyle.h

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#ifndef QPROXYSTYLE_H
#define QPROXYSTYLE_H
 
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtWidgets/QCommonStyle>
 
QT_BEGIN_NAMESPACE
 
 
#if !defined(QT_NO_STYLE_PROXY)
 
class QProxyStylePrivate;
class Q_WIDGETS_EXPORT QProxyStyle : public QCommonStyle
{
    Q_OBJECT
 
public:
    QProxyStyle(QStyle *style = nullptr);
    QProxyStyle(const QString &key);
    ~QProxyStyle();
 
    QStyle *baseStyle() const;
    void setBaseStyle(QStyle *style);
 
    void drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = nullptr) const override;
    void drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = nullptr) const override;
    void drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget = nullptr) const override;
    void drawItemText(QPainter *painter, const QRect &rect, int flags, const QPalette &pal, bool enabled,
                      const QString &text, QPalette::ColorRole textRole = QPalette::NoRole) const override;
    virtual void drawItemPixmap(QPainter *painter, const QRect &rect, int alignment, const QPixmap &pixmap) const override;
 
    QSize sizeFromContents(ContentsType type, const QStyleOption *option, const QSize &size, const QWidget *widget) const override;
 
    QRect subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const override;
    QRect subControlRect(ComplexControl cc, const QStyleOptionComplex *opt, SubControl sc, const QWidget *widget) const override;
    QRect itemTextRect(const QFontMetrics &fm, const QRect &r, int flags, bool enabled, const QString &text) const override;
    QRect itemPixmapRect(const QRect &r, int flags, const QPixmap &pixmap) const override;
 
    SubControl hitTestComplexControl(ComplexControl control, const QStyleOptionComplex *option, const QPoint &pos, const QWidget *widget = nullptr) const override;
    int styleHint(StyleHint hint, const QStyleOption *option = nullptr, const QWidget *widget = nullptr, QStyleHintReturn *returnData = nullptr) const override;
    int pixelMetric(PixelMetric metric, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override;
    int layoutSpacing(QSizePolicy::ControlType control1, QSizePolicy::ControlType control2,
                      Qt::Orientation orientation, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override;
 
    QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override;
    QPixmap standardPixmap(StandardPixmap standardPixmap, const QStyleOption *opt, const QWidget *widget = nullptr) const override;
    QPixmap generatedIconPixmap(QIcon::Mode iconMode, const QPixmap &pixmap, const QStyleOption *opt) const override;
    QPalette standardPalette() const override;
 
    void polish(QWidget *widget) override;
    void polish(QPalette &pal) override;
    void polish(QApplication *app) override;
 
    void unpolish(QWidget *widget) override;
    void unpolish(QApplication *app) override;
 
protected:
    bool event(QEvent *e) override;
 
private:
    Q_DISABLE_COPY(QProxyStyle)
    Q_DECLARE_PRIVATE(QProxyStyle)
};
 
#endif // QT_NO_STYLE_PROXY
 
QT_END_NAMESPACE
 
#endif // QPROXYSTYLE_H