/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** 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 Technology Preview License Agreement accompanying

** this package.

**

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QBRUSH_H

#define QBRUSH_H

#include <QtCore/qpair.h>

#include <QtCore/qpoint.h>

#include <QtCore/qvector.h>

#include <QtCore/qscopedpointer.h>

#include <QtGui/qcolor.h>

#include <QtGui/qmatrix.h>

#include <QtGui/qtransform.h>

#include <QtGui/qimage.h>

#include <QtGui/qpixmap.h>

#if defined(Q_OS_VXWORKS)

#  if defined(m_data)

#    undef m_data

#  endif

#  if defined(m_type)

#    undef m_type

#  endif

#endif

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

struct QBrushData;

class QPixmap;

class QGradient;

class QVariant;

struct QBrushDataPointerDeleter;

class Q_GUI_EXPORT QBrush

{

public:

    QBrush();

    QBrush(Qt::BrushStyle bs);

    QBrush(const QColor &color, Qt::BrushStyle bs=Qt::SolidPattern);

    QBrush(Qt::GlobalColor color, Qt::BrushStyle bs=Qt::SolidPattern);

    QBrush(const QColor &color, const QPixmap &pixmap);

    QBrush(Qt::GlobalColor color, const QPixmap &pixmap);

    QBrush(const QPixmap &pixmap);

    QBrush(const QImage &image);

    QBrush(const QBrush &brush);

    QBrush(const QGradient &gradient);

    ~QBrush();

    QBrush &operator=(const QBrush &brush);

    operator QVariant() const;

    inline Qt::BrushStyle style() const;

    void setStyle(Qt::BrushStyle);

    inline const QMatrix &matrix() const;

    void setMatrix(const QMatrix &mat);

    inline QTransform transform() const;

    void setTransform(const QTransform &);

    QPixmap texture() const;

    void setTexture(const QPixmap &pixmap);

    QImage textureImage() const;

    void setTextureImage(const QImage &image);

    inline const QColor &color() const;

    void setColor(const QColor &color);

    inline void setColor(Qt::GlobalColor color);

    const QGradient *gradient() const;

    bool isOpaque() const;

    bool operator==(const QBrush &b) const;

    inline bool operator!=(const QBrush &b) const { return !(operator==(b)); }

#ifdef QT3_SUPPORT

    inline QT3_SUPPORT operator const QColor&() const;

    QT3_SUPPORT QPixmap *pixmap() const;

    inline QT3_SUPPORT void setPixmap(const QPixmap &pixmap) { setTexture(pixmap); }

#endif

private:

#if defined(Q_WS_X11)

    friend class QX11PaintEngine;

#endif

    friend class QRasterPaintEngine;

    friend class QRasterPaintEnginePrivate;

    friend struct QSpanData;

    friend class QPainter;

    friend bool Q_GUI_EXPORT qHasPixmapTexture(const QBrush& brush);

    void detach(Qt::BrushStyle newStyle);

    void init(const QColor &color, Qt::BrushStyle bs);

    QScopedPointer<QBrushData, QBrushDataPointerDeleter> d;

    void cleanUp(QBrushData *x);

public:

    inline bool isDetached() const;

    typedef QScopedPointer<QBrushData, QBrushDataPointerDeleter> DataPtr;

    inline DataPtr &data_ptr() { return d; }

};

inline void QBrush::setColor(Qt::GlobalColor acolor)

{ setColor(QColor(acolor)); }

Q_DECLARE_TYPEINFO(QBrush, Q_MOVABLE_TYPE);

Q_DECLARE_SHARED(QBrush)

/*****************************************************************************

  QBrush stream functions

 *****************************************************************************/

#ifndef QT_NO_DATASTREAM

Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QBrush &);

Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QBrush &);

#endif

#ifndef QT_NO_DEBUG_STREAM

Q_GUI_EXPORT QDebug operator<<(QDebug, const QBrush &);

#endif

struct QBrushData

{

    QAtomicInt ref;

    Qt::BrushStyle style;

    QColor color;

    QTransform transform;

};

inline Qt::BrushStyle QBrush::style() const { return d->style; }

inline const QColor &QBrush::color() const { return d->color; }

inline const QMatrix &QBrush::matrix() const { return d->transform.toAffine(); }

inline QTransform QBrush::transform() const { return d->transform; }

inline bool QBrush::isDetached() const { return d->ref == 1; }

#ifdef QT3_SUPPORT

inline QBrush::operator const QColor&() const { return d->color; }

#endif

/*******************************************************************************

 * QGradients

 */

class QGradientPrivate;

typedef QPair<qreal, QColor> QGradientStop;

typedef QVector<QGradientStop> QGradientStops;

class Q_GUI_EXPORT QGradient

{

    Q_GADGET

    Q_ENUMS(Type Spread CoordinateMode)

public:

    enum Type {

        LinearGradient,

        RadialGradient,

        ConicalGradient,

        NoGradient

    };

    enum Spread {

        PadSpread,

        ReflectSpread,

        RepeatSpread

    };

    enum CoordinateMode {

        LogicalMode,

        StretchToDeviceMode,

        ObjectBoundingMode

    };

    enum InterpolationMode {

        ColorInterpolation,

        ComponentInterpolation

    };

    QGradient();

    Type type() const { return m_type; }

    inline void setSpread(Spread spread);

    Spread spread() const { return m_spread; }

    void setColorAt(qreal pos, const QColor &color);

    void setStops(const QGradientStops &stops);

    QGradientStops stops() const;

    CoordinateMode coordinateMode() const;

    void setCoordinateMode(CoordinateMode mode);

    InterpolationMode interpolationMode() const;

    void setInterpolationMode(InterpolationMode mode);

    bool operator==(const QGradient &gradient) const;

    inline bool operator!=(const QGradient &other) const

    { return !operator==(other); }

    bool operator==(const QGradient &gradient); // ### Qt 5: remove

private:

    friend class QLinearGradient;

    friend class QRadialGradient;

    friend class QConicalGradient;

    Type m_type;

    Spread m_spread;

    QGradientStops m_stops;

    union {

        struct {

            qreal x1, y1, x2, y2;

        } linear;

        struct {

            qreal cx, cy, fx, fy, radius;

        } radial;

        struct {

            qreal cx, cy, angle;

        } conical;

    } m_data;

    void *dummy;

};

inline void QGradient::setSpread(Spread aspread)

{ m_spread = aspread; }

class Q_GUI_EXPORT QLinearGradient : public QGradient

{

public:

    QLinearGradient();

    QLinearGradient(const QPointF &start, const QPointF &finalStop);

    QLinearGradient(qreal xStart, qreal yStart, qreal xFinalStop, qreal yFinalStop);

    QPointF start() const;

    void setStart(const QPointF &start);

    inline void setStart(qreal x, qreal y) { setStart(QPointF(x, y)); }

    QPointF finalStop() const;

    void setFinalStop(const QPointF &stop);

    inline void setFinalStop(qreal x, qreal y) { setFinalStop(QPointF(x, y)); }

};

class Q_GUI_EXPORT QRadialGradient : public QGradient

{

public:

    QRadialGradient();

    QRadialGradient(const QPointF &center, qreal radius, const QPointF &focalPoint);

    QRadialGradient(qreal cx, qreal cy, qreal radius, qreal fx, qreal fy);

    QRadialGradient(const QPointF &center, qreal radius);

    QRadialGradient(qreal cx, qreal cy, qreal radius);

    QPointF center() const;

    void setCenter(const QPointF &center);

    inline void setCenter(qreal x, qreal y) { setCenter(QPointF(x, y)); }

    QPointF focalPoint() const;

    void setFocalPoint(const QPointF &focalPoint);

    inline void setFocalPoint(qreal x, qreal y) { setFocalPoint(QPointF(x, y)); }

    qreal radius() const;

    void setRadius(qreal radius);

};

class Q_GUI_EXPORT QConicalGradient : public QGradient

{

public:

    QConicalGradient();

    QConicalGradient(const QPointF &center, qreal startAngle);

    QConicalGradient(qreal cx, qreal cy, qreal startAngle);

    QPointF center() const;

    void setCenter(const QPointF &center);

    inline void setCenter(qreal x, qreal y) { setCenter(QPointF(x, y)); }

    qreal angle() const;

    void setAngle(qreal angle);

};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QBRUSH_H