/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtGui module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef QPAINTENGINEEX_P_H+
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#define QPAINTENGINEEX_P_H+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists purely as an+
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// implementation detail.  This header file may change from version to+
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// version without notice, or even be removed.+
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//+
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// We mean it.+
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//+
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+
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#include <QtGui/qpaintengine.h>+
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#include <QtGui/qdrawutil.h>+
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+
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#include <private/qpaintengine_p.h>+
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#include <private/qstroker_p.h>+
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#include <private/qpainter_p.h>+
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#include <private/qvectorpath_p.h>+
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+
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+
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QT_BEGIN_HEADER+
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+
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QT_BEGIN_NAMESPACE+
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+
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QT_MODULE(Gui)+
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+
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class QPainterState;+
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class QPaintEngineExPrivate;+
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class QStaticTextItem;+
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struct StrokeHandler;+
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+
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struct QIntRect {+
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    int x1, y1, x2, y2;+
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    inline void set(const QRect &r) {+
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        x1 = r.x();+
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        y1 = r.y();+
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        x2 = r.right() + 1;+
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        y2 = r.bottom() + 1;+
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        // We will assume normalized for later...+
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        Q_ASSERT(x2 >= x1);+
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        Q_ASSERT(y2 >= y1);+
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    }+
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};+
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+
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class QRectVectorPath : public QVectorPath {+
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public:+
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    inline void set(const QRect &r) {+
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        qreal left = r.x();+
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        qreal right = r.x() + r.width();+
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        qreal top = r.y();+
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        qreal bottom = r.y() + r.height();+
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        pts[0] = left;+
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        pts[1] = top;+
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        pts[2] = right;+
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        pts[3] = top;+
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        pts[4] = right;+
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        pts[5] = bottom;+
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        pts[6] = left;+
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        pts[7] = bottom;+
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    }+
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+
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    inline void set(const QRectF &r) {+
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        qreal left = r.x();+
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        qreal right = r.x() + r.width();+
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        qreal top = r.y();+
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        qreal bottom = r.y() + r.height();+
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        pts[0] = left;+
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        pts[1] = top;+
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        pts[2] = right;+
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        pts[3] = top;+
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        pts[4] = right;+
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        pts[5] = bottom;+
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        pts[6] = left;+
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        pts[7] = bottom;+
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    }+
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    inline QRectVectorPath(const QRect &r)+
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        : QVectorPath(pts, 4, 0, QVectorPath::RectangleHint | QVectorPath::ImplicitClose)+
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    {+
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        set(r);+
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    }+
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    inline QRectVectorPath(const QRectF &r)+
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        : QVectorPath(pts, 4, 0, QVectorPath::RectangleHint | QVectorPath::ImplicitClose)+
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    {+
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        set(r);+
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    }+
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    inline QRectVectorPath()+
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        : QVectorPath(pts, 4, 0, QVectorPath::RectangleHint | QVectorPath::ImplicitClose)+
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    { }+
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+
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    qreal pts[8];+
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};+
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+
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#ifndef QT_NO_DEBUG_STREAM+
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QDebug Q_GUI_EXPORT &operator<<(QDebug &, const QVectorPath &path);+
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#endif+
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+
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class QPixmapFilter;+
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+
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class Q_GUI_EXPORT QPaintEngineEx : public QPaintEngine+
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{+
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    Q_DECLARE_PRIVATE(QPaintEngineEx)+
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public:+
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    QPaintEngineEx();+
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+
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    virtual QPainterState *createState(QPainterState *orig) const;+
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+
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    virtual void draw(const QVectorPath &path);+
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    virtual void fill(const QVectorPath &path, const QBrush &brush) = 0;+
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    virtual void stroke(const QVectorPath &path, const QPen &pen);+
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+
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    virtual void clip(const QVectorPath &path, Qt::ClipOperation op) = 0;+
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    virtual void clip(const QRect &rect, Qt::ClipOperation op);+
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    virtual void clip(const QRegion &region, Qt::ClipOperation op);+
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    virtual void clip(const QPainterPath &path, Qt::ClipOperation op);+
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+
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    virtual void clipEnabledChanged() = 0;+
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    virtual void penChanged() = 0;+
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    virtual void brushChanged() = 0;+
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    virtual void brushOriginChanged() = 0;+
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    virtual void opacityChanged() = 0;+
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    virtual void compositionModeChanged() = 0;+
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    virtual void renderHintsChanged() = 0;+
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    virtual void transformChanged() = 0;+
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+
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    virtual void fillRect(const QRectF &rect, const QBrush &brush);+
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    virtual void fillRect(const QRectF &rect, const QColor &color);+
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+
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    virtual void drawRoundedRect(const QRectF &rect, qreal xrad, qreal yrad, Qt::SizeMode mode);+
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+
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    virtual void drawRects(const QRect *rects, int rectCount);+
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    virtual void drawRects(const QRectF *rects, int rectCount);+
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+
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    virtual void drawLines(const QLine *lines, int lineCount);+
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    virtual void drawLines(const QLineF *lines, int lineCount);+
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+
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    virtual void drawEllipse(const QRectF &r);+
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    virtual void drawEllipse(const QRect &r);+
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+
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    virtual void drawPath(const QPainterPath &path);+
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+
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    virtual void drawPoints(const QPointF *points, int pointCount);+
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    virtual void drawPoints(const QPoint *points, int pointCount);+
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+
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    virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);+
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    virtual void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode);+
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+
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    virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) = 0;+
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    virtual void drawPixmap(const QPointF &pos, const QPixmap &pm);+
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+
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    virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,+
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                           Qt::ImageConversionFlags flags = Qt::AutoColor) = 0;+
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    virtual void drawImage(const QPointF &pos, const QImage &image);+
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+
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    virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);+
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+
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    virtual void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,+
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                                     QFlags<QPainter::PixmapFragmentHint> hints);+
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+
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    virtual void updateState(const QPaintEngineState &state);+
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+
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    virtual void drawStaticTextItem(QStaticTextItem *) = 0;+
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+
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    virtual void setState(QPainterState *s);+
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    inline QPainterState *state() { return static_cast<QPainterState *>(QPaintEngine::state); }+
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    inline const QPainterState *state() const { return static_cast<const QPainterState *>(QPaintEngine::state); }+
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+
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    virtual void sync() {}+
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+
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    virtual void beginNativePainting() {}+
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    virtual void endNativePainting() {}+
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+
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    // Return a pixmap filter of "type" that can render the parameters+
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    // in "prototype".  The returned filter is owned by the engine and+
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    // will be destroyed when the engine is destroyed.  The "prototype"+
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    // allows the engine to pick different filters based on the parameters+
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    // that will be requested, and not just the "type".+
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    virtual QPixmapFilter *pixmapFilter(int /*type*/, const QPixmapFilter * /*prototype*/) { return 0; }+
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+
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    // These flags are needed in the implementation of paint buffers.+
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    enum Flags+
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    {+
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        DoNotEmulate = 0x01,        // If set, QPainter will not wrap this engine in an emulation engine.+
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        IsEmulationEngine = 0x02    // If set, this object is a QEmulationEngine.+
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    };+
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    virtual uint flags() const {return 0;}+
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+
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protected:+
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    QPaintEngineEx(QPaintEngineExPrivate &data);+
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};+
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+
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class Q_GUI_EXPORT QPaintEngineExPrivate : public QPaintEnginePrivate+
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{+
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    Q_DECLARE_PUBLIC(QPaintEngineEx)+
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public:+
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    QPaintEngineExPrivate();+
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    ~QPaintEngineExPrivate();+
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+
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    void replayClipOperations();+
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    bool hasClipOperations() const;+
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+
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    QStroker stroker;+
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    QDashStroker dasher;+
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    StrokeHandler *strokeHandler;+
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    QStrokerOps *activeStroker;+
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    QPen strokerPen;+
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+
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    QRect exDeviceRect;+
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};+
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+
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inline uint QVectorPath::polygonFlags(QPaintEngine::PolygonDrawMode mode) {+
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    switch (mode) {+
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    case QPaintEngine::ConvexMode: return ConvexPolygonHint | ImplicitClose;+
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    case QPaintEngine::OddEvenMode: return PolygonHint | OddEvenFill | ImplicitClose;+
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    case QPaintEngine::WindingMode: return PolygonHint | WindingFill | ImplicitClose;+
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    case QPaintEngine::PolylineMode: return PolygonHint;+
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    default: return 0;+
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    }+
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}+
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+
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QT_END_NAMESPACE+
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+
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QT_END_HEADER+
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+
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#endif+
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