| 1 | /**************************************************************************** | 
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| 2 | ** | 
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| 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | 
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| 4 | ** All rights reserved. | 
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| 5 | ** Contact: Nokia Corporation (qt-info@nokia.com) | 
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| 6 | ** | 
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| 7 | ** This file is part of the QtGui module of the Qt Toolkit. | 
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| 8 | ** | 
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$ | 
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| 10 | ** Commercial Usage | 
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in | 
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the | 
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| 13 | ** Software or, alternatively, in accordance with the terms contained in | 
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| 14 | ** a written agreement between you and Nokia. | 
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| 15 | ** | 
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| 16 | ** GNU Lesser General Public License Usage | 
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser | 
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| 18 | ** General Public License version 2.1 as published by the Free Software | 
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the | 
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| 20 | ** packaging of this file.  Please review the following information to | 
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements | 
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. | 
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| 23 | ** | 
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| 24 | ** In addition, as a special exception, Nokia gives you certain additional | 
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| 25 | ** rights.  These rights are described in the Nokia Qt LGPL Exception | 
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. | 
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| 27 | ** | 
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| 28 | ** GNU General Public License Usage | 
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| 29 | ** Alternatively, this file may be used under the terms of the GNU | 
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| 30 | ** General Public License version 3.0 as published by the Free Software | 
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the | 
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| 32 | ** packaging of this file.  Please review the following information to | 
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be | 
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html. | 
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| 35 | ** | 
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| 36 | ** If you have questions regarding the use of this file, please contact | 
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| 37 | ** Nokia at qt-info@nokia.com. | 
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| 38 | ** $QT_END_LICENSE$ | 
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| 39 | ** | 
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| 40 | ****************************************************************************/ | 
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| 41 |  | 
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| 42 | #include "qstylepainter.h" | 
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| 43 |  | 
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| 44 | QT_BEGIN_NAMESPACE | 
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| 45 |  | 
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| 46 | /*! | 
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| 47 | \class QStylePainter | 
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| 48 |  | 
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| 49 | \brief The QStylePainter class is a convenience class for drawing QStyle | 
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| 50 | elements inside a widget. | 
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| 51 |  | 
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| 52 | \ingroup appearance | 
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| 53 | \ingroup painting | 
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| 54 |  | 
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| 55 | QStylePainter extends QPainter with a set of high-level \c | 
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| 56 | draw...() functions implemented on top of QStyle's API. The | 
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| 57 | advantage of using QStylePainter is that the parameter lists get | 
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| 58 | considerably shorter. Whereas a QStyle object must be able to | 
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| 59 | draw on any widget using any painter (because the application | 
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| 60 | normally has one QStyle object shared by all widget), a | 
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| 61 | QStylePainter is initialized with a widget, eliminating the need | 
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| 62 | to specify the QWidget, the QPainter, and the QStyle for every | 
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| 63 | function call. | 
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| 64 |  | 
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| 65 | Example using QStyle directly: | 
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| 66 |  | 
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| 67 | \snippet doc/src/snippets/styles/styles.cpp 1 | 
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| 68 |  | 
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| 69 | Example using QStylePainter: | 
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| 70 |  | 
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| 71 | \snippet doc/src/snippets/styles/styles.cpp 0 | 
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| 72 | \snippet doc/src/snippets/styles/styles.cpp 4 | 
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| 73 | \snippet doc/src/snippets/styles/styles.cpp 6 | 
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| 74 |  | 
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| 75 | \sa QStyle, QStyleOption | 
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| 76 | */ | 
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| 77 |  | 
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| 78 | /*! | 
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| 79 | \fn QStylePainter::QStylePainter() | 
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| 80 |  | 
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| 81 | Constructs a QStylePainter. | 
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| 82 | */ | 
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| 83 |  | 
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| 84 | /*! | 
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| 85 | \fn QStylePainter::QStylePainter(QWidget *widget) | 
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| 86 |  | 
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| 87 | Construct a QStylePainter using widget \a widget for its paint device. | 
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| 88 | */ | 
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| 89 |  | 
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| 90 | /*! | 
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| 91 | \fn QStylePainter::QStylePainter(QPaintDevice *pd, QWidget *widget) | 
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| 92 |  | 
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| 93 | Construct a QStylePainter using \a pd for its paint device, and | 
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| 94 | attributes from \a widget. | 
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| 95 | */ | 
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| 96 |  | 
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| 97 |  | 
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| 98 | /*! | 
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| 99 | \fn bool QStylePainter::begin(QWidget *widget) | 
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| 100 |  | 
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| 101 | Begin painting operations on the specified \a widget. | 
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| 102 | Returns true if the painter is ready to use; otherwise returns false. | 
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| 103 |  | 
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| 104 | This is automatically called by the constructor that takes a QWidget. | 
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| 105 | */ | 
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| 106 |  | 
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| 107 | /*! | 
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| 108 | \fn bool QStylePainter::begin(QPaintDevice *pd, QWidget *widget) | 
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| 109 | \overload | 
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| 110 |  | 
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| 111 | Begin painting operations on paint device \a pd as if it was \a | 
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| 112 | widget. | 
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| 113 |  | 
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| 114 | This is automatically called by the constructor that | 
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| 115 | takes a QPaintDevice and a QWidget. | 
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| 116 | */ | 
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| 117 |  | 
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| 118 |  | 
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| 119 | /*! | 
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| 120 | \fn void QStylePainter::drawPrimitive(QStyle::PrimitiveElement pe, const QStyleOption &option) | 
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| 121 |  | 
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| 122 | Use the widget's style to draw a primitive element \a pe specified by QStyleOption \a option. | 
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| 123 |  | 
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| 124 | \sa QStyle::drawPrimitive() | 
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| 125 | */ | 
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| 126 |  | 
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| 127 | /*! | 
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| 128 | \fn void QStylePainter::drawControl(QStyle::ControlElement ce, const QStyleOption &option) | 
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| 129 |  | 
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| 130 | Use the widget's style to draw a control element \a ce specified by QStyleOption \a option. | 
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| 131 |  | 
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| 132 | \sa QStyle::drawControl() | 
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| 133 | */ | 
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| 134 |  | 
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| 135 | /*! | 
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| 136 | \fn void QStylePainter::drawComplexControl(QStyle::ComplexControl cc, | 
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| 137 | const QStyleOptionComplex &option) | 
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| 138 |  | 
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| 139 | Use the widget's style to draw a complex control \a cc specified by the | 
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| 140 | QStyleOptionComplex \a option. | 
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| 141 |  | 
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| 142 | \sa QStyle::drawComplexControl() | 
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| 143 | */ | 
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| 144 |  | 
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| 145 | /*! | 
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| 146 | \fn void QStylePainter::drawItemText(const QRect &rect, int flags, const QPalette &pal, | 
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| 147 | bool enabled, const QString &text, | 
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| 148 | QPalette::ColorRole textRole = QPalette::NoRole) | 
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| 149 |  | 
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| 150 | Draws the \a text in rectangle \a rect and palette \a pal. | 
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| 151 | The text is aligned and wrapped according to \a | 
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| 152 | flags. | 
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| 153 |  | 
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| 154 | The pen color is specified with \a textRole. The \a enabled bool | 
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| 155 | indicates whether or not the item is enabled; when reimplementing | 
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| 156 | this bool should influence how the item is drawn. | 
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| 157 |  | 
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| 158 | \sa QStyle::drawItemText(), Qt::Alignment | 
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| 159 | */ | 
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| 160 |  | 
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| 161 | /*! | 
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| 162 | \fn void QStylePainter::drawItemPixmap(const QRect &rect, int flags, const QPixmap &pixmap) | 
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| 163 |  | 
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| 164 | Draws the \a pixmap in rectangle \a rect. | 
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| 165 | The pixmap is aligned according to \a flags. | 
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| 166 |  | 
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| 167 | \sa QStyle::drawItemPixmap(), Qt::Alignment | 
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| 168 | */ | 
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| 169 |  | 
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| 170 | /*! | 
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| 171 | \fn QStyle *QStylePainter::style() const | 
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| 172 |  | 
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| 173 | Return the current style used by the QStylePainter. | 
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| 174 | */ | 
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| 175 |  | 
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| 176 | QT_END_NAMESPACE | 
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