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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QREGION_H
#define QREGION_H
#include <QtCore/qatomic.h>
#include <QtCore/qrect.h>
#include <QtGui/qwindowdefs.h>
#ifndef QT_NO_DATASTREAM
#include <QtCore/qdatastream.h>
#endif
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) || defined(Q_WS_S60)
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)
#if defined Q_WS_MAC32
RgnHandle toQDRgn() const;
static QRegion fromQDRgn(RgnHandle shape);
#endif
#ifdef QT_MAC_USE_COCOA
inline HIMutableShapeRef handle(bool unused = false) const
{ Q_UNUSED(unused); return toHIMutableShape(); }
#else
inline RgnHandle handle() const { return handle(false); }
inline RgnHandle handle(bool) const { return toQDRgn(); }
#endif
HIMutableShapeRef toHIMutableShape() const;
static QRegion fromHIShapeRef(HIShapeRef shape);
#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)
static OSStatus shape2QRegionHelper(int inMessage, HIShapeRef inShape,
const CGRect *inRect, void *inRefcon);
#endif
friend bool qt_region_strictContains(const QRegion ®ion,
const QRect &rect);
friend struct QRegionPrivate;
#ifndef QT_NO_DATASTREAM
void exec(const QByteArray &ba, int ver = 0, QDataStream::ByteOrder byteOrder = QDataStream::BigEndian);
#endif
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) && !defined(QT_MAC_USE_COCOA)
mutable RgnHandle unused; // Here for binary compatability reasons. ### Qt 5 remove.
#endif
#if defined(Q_WS_QWS) || defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_OS_WINCE) || defined(Q_WS_S60)
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
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