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39
40#ifndef QSTYLEPAINTER_H
41#define QSTYLEPAINTER_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44#include <QtGui/qpainter.h>
45#include <QtWidgets/qstyle.h>
46#include <QtWidgets/qwidget.h>
47
48QT_BEGIN_NAMESPACE
49
50
51class QStylePainter : public QPainter
52{
53public:
54 inline QStylePainter() : QPainter(), widget(nullptr), wstyle(nullptr) {}
55 inline explicit QStylePainter(QWidget *w) { begin(w, w); }
56 inline QStylePainter(QPaintDevice *pd, QWidget *w) { begin(pd, w); }
57 inline bool begin(QWidget *w) { return begin(w, w); }
58 inline bool begin(QPaintDevice *pd, QWidget *w) {
59 Q_ASSERT_X(w, "QStylePainter::QStylePainter", "Widget must be non-zero");
60 widget = w;
61 wstyle = w->style();
62 return QPainter::begin(pd);
63 };
64 inline void drawPrimitive(QStyle::PrimitiveElement pe, const QStyleOption &opt);
65 inline void drawControl(QStyle::ControlElement ce, const QStyleOption &opt);
66 inline void drawComplexControl(QStyle::ComplexControl cc, const QStyleOptionComplex &opt);
67 inline void drawItemText(const QRect &r, int flags, const QPalette &pal, bool enabled,
68 const QString &text, QPalette::ColorRole textRole = QPalette::NoRole);
69 inline void drawItemPixmap(const QRect &r, int flags, const QPixmap &pixmap);
70 inline QStyle *style() const { return wstyle; }
71
72private:
73 QWidget *widget;
74 QStyle *wstyle;
75 Q_DISABLE_COPY(QStylePainter)
76};
77
78void QStylePainter::drawPrimitive(QStyle::PrimitiveElement pe, const QStyleOption &opt)
79{
80 wstyle->drawPrimitive(pe, &opt, this, widget);
81}
82
83void QStylePainter::drawControl(QStyle::ControlElement ce, const QStyleOption &opt)
84{
85 wstyle->drawControl(ce, &opt, this, widget);
86}
87
88void QStylePainter::drawComplexControl(QStyle::ComplexControl cc, const QStyleOptionComplex &opt)
89{
90 wstyle->drawComplexControl(cc, &opt, this, widget);
91}
92
93void QStylePainter::drawItemText(const QRect &r, int flags, const QPalette &pal, bool enabled,
94 const QString &text, QPalette::ColorRole textRole)
95{
96 wstyle->drawItemText(this, r, flags, pal, enabled, text, textRole);
97}
98
99void QStylePainter::drawItemPixmap(const QRect &r, int flags, const QPixmap &pixmap)
100{
101 wstyle->drawItemPixmap(this, r, flags, pixmap);
102}
103
104QT_END_NAMESPACE
105
106#endif // QSTYLEPAINTER_H
107

source code of qtbase/src/widgets/styles/qstylepainter.h