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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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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