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39
40#include <QtWidgets/private/qtwidgetsglobal_p.h>
41#include <QtCore/qpoint.h>
42#include <QtCore/qstring.h>
43#include <QtGui/qpaintdevice.h>
44#include <QtGui/qpolygon.h>
45#include <QtCore/qstringbuilder.h>
46#include <QtGui/qaccessible.h>
47
48#ifndef QSTYLEHELPER_P_H
49#define QSTYLEHELPER_P_H
50
51//
52// W A R N I N G
53// -------------
54//
55// This file is not part of the Qt API. It exists purely as an
56// implementation detail. This header file may change from version to
57// version without notice, or even be removed.
58//
59// We mean it.
60//
61
62#include <private/qhexstring_p.h>
63
64QT_BEGIN_NAMESPACE
65
66class QColor;
67class QObject;
68class QPainter;
69class QPalette;
70class QPixmap;
71class QStyleOptionSlider;
72class QStyleOption;
73class QWidget;
74class QWindow;
75
76namespace QStyleHelper
77{
78 QString uniqueName(const QString &key, const QStyleOption *option, const QSize &size);
79
80 Q_WIDGETS_EXPORT qreal dpi(const QStyleOption *option);
81
82 Q_WIDGETS_EXPORT qreal dpiScaled(qreal value, qreal dpi);
83 Q_WIDGETS_EXPORT qreal dpiScaled(qreal value, const QPaintDevice *device);
84 Q_WIDGETS_EXPORT qreal dpiScaled(qreal value, const QStyleOption *option);
85
86#if QT_CONFIG(dial)
87 qreal angle(const QPointF &p1, const QPointF &p2);
88 QPolygonF calcLines(const QStyleOptionSlider *dial);
89 int calcBigLineSize(int radius);
90 Q_WIDGETS_EXPORT void drawDial(const QStyleOptionSlider *dial, QPainter *painter);
91#endif //QT_CONFIG(dial)
92 Q_WIDGETS_EXPORT void drawBorderPixmap(const QPixmap &pixmap, QPainter *painter, const QRect &rect,
93 int left = 0, int top = 0, int right = 0,
94 int bottom = 0);
95#ifndef QT_NO_ACCESSIBILITY
96 Q_WIDGETS_EXPORT bool isInstanceOf(QObject *obj, QAccessible::Role role);
97 Q_WIDGETS_EXPORT bool hasAncestor(QObject *obj, QAccessible::Role role);
98#endif
99 Q_WIDGETS_EXPORT QColor backgroundColor(const QPalette &pal, const QWidget* widget = nullptr);
100
101 enum WidgetSizePolicy { SizeLarge = 0, SizeSmall = 1, SizeMini = 2, SizeDefault = -1 };
102
103 Q_WIDGETS_EXPORT WidgetSizePolicy widgetSizePolicy(const QWidget *w, const QStyleOption *opt = nullptr);
104}
105
106
107QT_END_NAMESPACE
108
109#endif // QSTYLEHELPER_P_H
110

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