qregion.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtGui module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** Licensees holding valid Qt Commercial licenses may use this file in
- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 as published by the Free
- ** Software Foundation and appearing in the file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
- ** to ensure GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, as the sole copyright holder for Qt
- ** Designer, grants users of the Qt/Eclipse Integration plug-in the
- ** right for the Qt/Eclipse Integration to link to functionality
- ** provided by Qt Designer and its related libraries.
- **
- ** If you are unsure which license is appropriate for your use, please
- ** contact the sales department at qt-sales@nokia.com.
- **
- ****************************************************************************/
- #ifndef QREGION_H
- #define QREGION_H
- #include <QtCore/qatomic.h>
- #include <QtCore/qrect.h>
- #include <QtGui/qwindowdefs.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- template <class T> class QVector;
- class QVariant;
- #if defined(Q_WS_QWS) || defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_OS_WINCE)
- struct QRegionPrivate;
- #endif
- class QBitmap;
- class Q_GUI_EXPORT QRegion
- {
- public:
- enum RegionType { Rectangle, Ellipse };
- QRegion();
- QRegion(int x, int y, int w, int h, RegionType t = Rectangle);
- QRegion(const QRect &r, RegionType t = Rectangle);
- QRegion(const QPolygon &pa, Qt::FillRule fillRule = Qt::OddEvenFill);
- #ifdef QT3_SUPPORT
- QT3_SUPPORT_CONSTRUCTOR QRegion(const QPolygon &pa, bool winding);
- #endif
- QRegion(const QRegion ®ion);
- QRegion(const QBitmap &bitmap);
- ~QRegion();
- QRegion &operator=(const QRegion &);
- #ifdef QT3_SUPPORT
- inline QT3_SUPPORT bool isNull() const { return isEmpty(); }
- #endif
- bool isEmpty() const;
- bool contains(const QPoint &p) const;
- bool contains(const QRect &r) const;
- void translate(int dx, int dy);
- inline void translate(const QPoint &p) { translate(p.x(), p.y()); }
- QRegion translated(int dx, int dy) const;
- inline QRegion translated(const QPoint &p) const { return translated(p.x(), p.y()); }
- // ### Qt 5: make these four functions QT4_SUPPORT
- QRegion unite(const QRegion &r) const;
- QRegion unite(const QRect &r) const;
- QRegion intersect(const QRegion &r) const;
- QRegion intersect(const QRect &r) const;
- QRegion subtract(const QRegion &r) const;
- QRegion eor(const QRegion &r) const;
- inline QRegion united(const QRegion &r) const { return unite(r); }
- inline QRegion united(const QRect &r) const { return unite(r); }
- inline QRegion intersected(const QRegion &r) const { return intersect(r); }
- inline QRegion intersected(const QRect &r) const { return intersect(r); }
- inline QRegion subtracted(const QRegion &r) const { return subtract(r); }
- inline QRegion xored(const QRegion &r) const { return eor(r); }
- bool intersects(const QRegion &r) const;
- bool intersects(const QRect &r) const;
- QRect boundingRect() const;
- QVector<QRect> rects() const;
- void setRects(const QRect *rect, int num);
- int numRects() const;
- const QRegion operator|(const QRegion &r) const;
- const QRegion operator+(const QRegion &r) const;
- const QRegion operator+(const QRect &r) const;
- const QRegion operator&(const QRegion &r) const;
- const QRegion operator&(const QRect &r) const;
- const QRegion operator-(const QRegion &r) const;
- const QRegion operator^(const QRegion &r) const;
- QRegion& operator|=(const QRegion &r);
- QRegion& operator+=(const QRegion &r);
- QRegion& operator+=(const QRect &r);
- QRegion& operator&=(const QRegion &r);
- QRegion& operator&=(const QRect &r);
- QRegion& operator-=(const QRegion &r);
- QRegion& operator^=(const QRegion &r);
- bool operator==(const QRegion &r) const;
- inline bool operator!=(const QRegion &r) const { return !(operator==(r)); }
- operator QVariant() const;
- #ifdef qdoc
- Handle handle() const;
- #endif
- #ifndef qdoc
- #if defined(Q_WS_WIN)
- inline HRGN handle() const { ensureHandle(); return d->rgn; }
- #elif defined(Q_WS_X11)
- inline Region handle() const { if(!d->rgn) updateX11Region(); return d->rgn; }
- #elif defined(Q_WS_MAC)
- inline RgnHandle handle() const { return handle(false); }
- RgnHandle handle(bool require_rgn) const;
- #elif defined(Q_WS_QWS)
- inline void *handle() const { return d->qt_rgn; }
- #endif
- #endif
- #ifndef QT_NO_DATASTREAM
- friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QRegion &);
- friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QRegion &);
- #endif
- private:
- QRegion copy() const; // helper of detach.
- void detach();
- #if defined(Q_WS_WIN)
- void ensureHandle() const;
- QRegion winCombine(const QRegion &r, int num) const;
- #elif defined(Q_WS_X11)
- void updateX11Region() const;
- void *clipRectangles(int &num) const;
- friend void *qt_getClipRects(const QRegion &r, int &num);
- #elif defined(Q_WS_MAC)
- friend QRegion qt_mac_convert_mac_region(RgnHandle rgn);
- #endif
- friend bool qt_region_strictContains(const QRegion ®ion,
- const QRect &rect);
- friend struct QRegionPrivate;
- void exec(const QByteArray &ba, int ver = 0);
- struct QRegionData {
- QBasicAtomicInt ref;
- #if defined(Q_WS_WIN)
- HRGN rgn;
- #elif defined(Q_WS_X11)
- Region rgn;
- void *xrectangles;
- #elif defined(Q_WS_MAC)
- mutable RgnHandle rgn;
- #endif
- #if defined(Q_WS_QWS) || defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_OS_WINCE)
- QRegionPrivate *qt_rgn;
- #endif
- };
- #if defined(Q_WS_WIN)
- friend class QETWidget;
- #endif
- struct QRegionData *d;
- static struct QRegionData shared_empty;
- static void cleanUp(QRegionData *x);
- };
- /*****************************************************************************
- QRegion stream functions
- *****************************************************************************/
- #ifndef QT_NO_DATASTREAM
- Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QRegion &);
- Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QRegion &);
- #endif
- #ifndef QT_NO_DEBUG_STREAM
- Q_GUI_EXPORT QDebug operator<<(QDebug, const QRegion &);
- #endif
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QREGION_H