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/****************************************************************************
**
** Copyright (C) 2011 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 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;
virtual void init(QPainter *painter) const;
ushort painters; // refcount
private:
Q_DISABLE_COPY(QPaintDevice)
friend class QPainter;
friend class QFontEngineMac;
friend class QX11PaintEngine;
friend Q_GUI_EXPORT int qt_paint_device_metric(const QPaintDevice *device, PaintDeviceMetric metric);
};
/*****************************************************************************
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
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