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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 QPAINTENGINE_ALPHA_P_H
#define QPAINTENGINE_ALPHA_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#ifndef QT_NO_PRINTER
#include "private/qpaintengine_p.h"
QT_BEGIN_NAMESPACE
class QAlphaPaintEnginePrivate;
class QAlphaPaintEngine : public QPaintEngine
{
Q_DECLARE_PRIVATE(QAlphaPaintEngine)
public:
~QAlphaPaintEngine();
virtual bool begin(QPaintDevice *pdev);
virtual bool end();
virtual void updateState(const QPaintEngineState &state);
virtual void drawPath(const QPainterPath &path);
virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
virtual void drawImage(const QRectF &r, const QImage &image, const QRectF &sr);
virtual void drawTextItem(const QPointF &p, const QTextItem &textItem);
virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);
protected:
QAlphaPaintEngine(QAlphaPaintEnginePrivate &data, PaintEngineFeatures devcaps = 0);
QRegion alphaClipping() const;
bool continueCall() const;
void flushAndInit(bool init = true);
void cleanUp();
};
class QAlphaPaintEnginePrivate : public QPaintEnginePrivate
{
Q_DECLARE_PUBLIC(QAlphaPaintEngine)
public:
QAlphaPaintEnginePrivate();
~QAlphaPaintEnginePrivate();
int m_pass;
QPicture *m_pic;
QPaintEngine *m_picengine;
QPainter *m_picpainter;
QPaintEngine::PaintEngineFeatures m_savedcaps;
QPaintDevice *m_pdev;
QRegion m_alphargn;
QRegion m_cliprgn;
bool m_hasalpha;
bool m_alphaPen;
bool m_alphaBrush;
bool m_alphaOpacity;
bool m_advancedPen;
bool m_advancedBrush;
bool m_complexTransform;
bool m_emulateProjectiveTransforms;
bool m_continueCall;
QTransform m_transform;
QPen m_pen;
void addAlphaRect(const QRectF &rect);
QRectF addPenWidth(const QPainterPath &path);
void drawAlphaImage(const QRectF &rect);
QRect toRect(const QRectF &rect) const;
bool fullyContained(const QRectF &rect) const;
void resetState(QPainter *p);
};
QT_END_NAMESPACE
#endif // QT_NO_PRINTER
#endif // QPAINTENGINE_ALPHA_P_H
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