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

**

** 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.

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** $QT_END_LICENSE$

**

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

#ifndef QPAINTDEVICE_H

#define QPAINTDEVICE_H

#include <QtGui/qwindowdefs.h>

#include <QtCore/qrect.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#if defined(Q_WS_QWS)

class QWSDisplay;

#endif

class QPaintEngine;

class Q_GUI_EXPORT QPaintDevice                                // device for QPainter

{

public:

    enum PaintDeviceMetric {

        PdmWidth = 1,

        PdmHeight,

        PdmWidthMM,

        PdmHeightMM,

        PdmNumColors,

        PdmDepth,

        PdmDpiX,

        PdmDpiY,

        PdmPhysicalDpiX,

        PdmPhysicalDpiY

    };

    virtual ~QPaintDevice();

    virtual int devType() const;

    bool paintingActive() const;

    virtual QPaintEngine *paintEngine() const = 0;

#if defined(Q_WS_QWS)

    static QWSDisplay *qwsDisplay();

#endif

#ifdef Q_WS_WIN

    virtual HDC getDC() const;

    virtual void releaseDC(HDC hdc) const;

#endif

    int width() const { return metric(PdmWidth); }

    int height() const { return metric(PdmHeight); }

    int widthMM() const { return metric(PdmWidthMM); }

    int heightMM() const { return metric(PdmHeightMM); }

    int logicalDpiX() const { return metric(PdmDpiX); }

    int logicalDpiY() const { return metric(PdmDpiY); }

    int physicalDpiX() const { return metric(PdmPhysicalDpiX); }

    int physicalDpiY() const { return metric(PdmPhysicalDpiY); }

#ifdef QT_DEPRECATED

    QT_DEPRECATED int numColors() const { return metric(PdmNumColors); }

#endif

    int colorCount() const { return metric(PdmNumColors); }

    int depth() const { return metric(PdmDepth); }

protected:

    QPaintDevice();

    virtual int metric(PaintDeviceMetric metric) const;

    ushort        painters;                        // refcount

private:

    Q_DISABLE_COPY(QPaintDevice)

#if defined(Q_WS_X11) && defined(QT3_SUPPORT)

public:

    QT3_SUPPORT Display *x11Display() const;

    QT3_SUPPORT int x11Screen() const;

    QT3_SUPPORT int x11Depth() const;

    QT3_SUPPORT int x11Cells() const;

    QT3_SUPPORT Qt::HANDLE x11Colormap() const;

    QT3_SUPPORT bool x11DefaultColormap() const;

    QT3_SUPPORT void *x11Visual() const;

    QT3_SUPPORT bool x11DefaultVisual() const;

    static QT3_SUPPORT Display *x11AppDisplay();

    static QT3_SUPPORT int x11AppScreen();

    static QT3_SUPPORT int x11AppDepth(int screen = -1);

    static QT3_SUPPORT int x11AppCells(int screen = -1);

    static QT3_SUPPORT Qt::HANDLE x11AppRootWindow(int screen = -1);

    static QT3_SUPPORT Qt::HANDLE x11AppColormap(int screen = -1);

    static QT3_SUPPORT void *x11AppVisual(int screen = -1);

    static QT3_SUPPORT bool x11AppDefaultColormap(int screen =-1);

    static QT3_SUPPORT bool x11AppDefaultVisual(int screen =-1);

    static QT3_SUPPORT int x11AppDpiX(int screen = -1);

    static QT3_SUPPORT int x11AppDpiY(int screen = -1);

    static QT3_SUPPORT void x11SetAppDpiX(int, int);

    static QT3_SUPPORT void x11SetAppDpiY(int, int);

#endif

    friend class QPainter;

    friend class QFontEngineMac;

    friend class QX11PaintEngine;

    friend Q_GUI_EXPORT int qt_paint_device_metric(const QPaintDevice *device, PaintDeviceMetric metric);

};

#ifdef QT3_SUPPORT

QT3_SUPPORT Q_GUI_EXPORT

void bitBlt(QPaintDevice *dst, int dx, int dy,

             const QPaintDevice *src, int sx=0, int sy=0, int sw=-1, int sh=-1,

             bool ignoreMask=false);

QT3_SUPPORT Q_GUI_EXPORT

void bitBlt(QPaintDevice *dst, int dx, int dy,

             const QImage *src, int sx=0, int sy=0, int sw=-1, int sh=-1,

             int conversion_flags=0);

QT3_SUPPORT Q_GUI_EXPORT

void bitBlt(QPaintDevice *dst, const QPoint &dp,

            const QPaintDevice *src, const QRect &sr=QRect(0,0,-1,-1),

            bool ignoreMask=false);

#endif

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

  Inline functions

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

inline int QPaintDevice::devType() const

{ return QInternal::UnknownDevice; }

inline bool QPaintDevice::paintingActive() const

{ return painters != 0; }

QT_END_NAMESPACE

QT_END_HEADER

#endif // QPAINTDEVICE_H