qregion.h
This is the verbatim text of the qregion.h include file. It is provided only for illustration; the copyright remains with Trolltech.
/****************************************************************************
** $Id: qt/qregion.h 3.3.8 edited Jan 11 14:38 $
**
** Definition of QRegion class
**
** Created : 940514
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** 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. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef QREGION_H
#define QREGION_H
#ifndef QT_H
#include "qshared.h"
#include "qrect.h"
#endif // QT_H
#ifdef Q_WS_X11
struct QRegionPrivate;
#endif
class Q_EXPORT QRegion
{
public:
enum RegionType { Rectangle, Ellipse };
QRegion();
QRegion( int x, int y, int w, int h, RegionType = Rectangle );
QRegion( const QRect &, RegionType = Rectangle );
QRegion( const QPointArray &, bool winding=FALSE );
QRegion( const QRegion & );
QRegion( const QBitmap & );
~QRegion();
QRegion &operator=( const QRegion & );
bool isNull() const;
bool isEmpty() const;
bool contains( const QPoint &p ) const;
bool contains( const QRect &r ) const;
void translate( int dx, int dy );
QRegion unite( const QRegion & ) const;
QRegion intersect( const QRegion &) const;
QRegion subtract( const QRegion & ) const;
QRegion eor( const QRegion & ) const;
QRect boundingRect() const;
QMemArray<QRect> rects() const;
void setRects( const QRect *, int );
const QRegion operator|( const QRegion & ) const;
const QRegion operator+( const QRegion & ) const;
const QRegion operator&( const QRegion & ) const;
const QRegion operator-( const QRegion & ) const;
const QRegion operator^( const QRegion & ) const;
QRegion& operator|=( const QRegion & );
QRegion& operator+=( const QRegion & );
QRegion& operator&=( const QRegion & );
QRegion& operator-=( const QRegion & );
QRegion& operator^=( const QRegion & );
bool operator==( const QRegion & ) const;
bool operator!=( const QRegion &r ) const
{ return !(operator==(r)); }
#if defined(Q_WS_WIN)
HRGN handle() const { return data->rgn; }
#elif defined(Q_WS_X11)
Region handle() const { if(!data->rgn) updateX11Region(); return data->rgn; }
#elif defined(Q_WS_MAC)
RgnHandle handle(bool require_rgn=FALSE) const;
#elif defined(Q_WS_QWS)
// QGfx_QWS needs this for region drawing
void * handle() const { return data->rgn; }
#endif
#ifndef QT_NO_DATASTREAM
friend Q_EXPORT QDataStream &operator<<( QDataStream &, const QRegion & );
friend Q_EXPORT QDataStream &operator>>( QDataStream &, QRegion & );
#endif
private:
QRegion( bool );
QRegion copy() const;
void detach();
#if defined(Q_WS_WIN)
QRegion winCombine( const QRegion &, int ) const;
#endif
#if defined(Q_WS_X11)
void updateX11Region() const;
void *clipRectangles( int &num ) const;
friend void *qt_getClipRects( const QRegion &, int & );
#endif
void exec( const QByteArray &, int ver = 0 );
struct QRegionData : public QShared {
#if defined(Q_WS_WIN)
HRGN rgn;
#elif defined(Q_WS_X11)
Region rgn;
void *xrectangles;
QRegionPrivate *region;
#elif defined(Q_WS_MAC)
uint is_rect:1;
QRect rect;
RgnHandle rgn;
#elif defined(Q_WS_QWS)
void * rgn;
#endif
bool is_null;
} *data;
#if defined(Q_WS_MAC)
friend struct qt_mac_rgn_data_cache;
friend QRegionData *qt_mac_get_rgn_data();
friend void qt_mac_free_rgn_data(QRegionData *);
void rectifyRegion();
#elif defined(Q_WS_WIN)
friend class QETWidget;
#endif
};
#define QRGN_SETRECT 1 // region stream commands
#define QRGN_SETELLIPSE 2 // (these are internal)
#define QRGN_SETPTARRAY_ALT 3
#define QRGN_SETPTARRAY_WIND 4
#define QRGN_TRANSLATE 5
#define QRGN_OR 6
#define QRGN_AND 7
#define QRGN_SUB 8
#define QRGN_XOR 9
#define QRGN_RECTS 10
/*****************************************************************************
QRegion stream functions
*****************************************************************************/
#ifndef QT_NO_DATASTREAM
Q_EXPORT QDataStream &operator<<( QDataStream &, const QRegion & );
Q_EXPORT QDataStream &operator>>( QDataStream &, QRegion & );
#endif
#endif // QREGION_H
