Long live Qt 4.5!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPAINTENGINE_OPENGL_P_H
+#define QPAINTENGINE_OPENGL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qpaintengineex_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLPaintEnginePrivate;
+
+class QOpenGLPaintEngineState : public QPainterState
+{
+public:
+    QOpenGLPaintEngineState(QOpenGLPaintEngineState &other);
+    QOpenGLPaintEngineState();
+    ~QOpenGLPaintEngineState();
+
+    QRegion clipRegion;
+    bool hasClipping;
+    QRect fastClip;
+};
+
+class QOpenGLPaintEngine : public QPaintEngineEx
+{
+    Q_DECLARE_PRIVATE(QOpenGLPaintEngine)
+public:
+    QOpenGLPaintEngine();
+    ~QOpenGLPaintEngine();
+
+    bool begin(QPaintDevice *pdev);
+    bool end();
+
+    // new stuff
+    void clipEnabledChanged();
+    void penChanged();
+    void brushChanged();
+    void brushOriginChanged();
+    void opacityChanged();
+    void compositionModeChanged();
+    void renderHintsChanged();
+    void transformChanged();
+
+    void fill(const QVectorPath &path, const QBrush &brush);
+    void clip(const QVectorPath &path, Qt::ClipOperation op);
+
+    void setState(QPainterState *s);
+    QPainterState *createState(QPainterState *orig) const;
+    inline QOpenGLPaintEngineState *state() {
+        return static_cast<QOpenGLPaintEngineState *>(QPaintEngineEx::state());
+    }
+    inline const QOpenGLPaintEngineState *state() const {
+        return static_cast<const QOpenGLPaintEngineState *>(QPaintEngineEx::state());
+    }
+
+
+    // old stuff
+    void updateState(const QPaintEngineState &state);
+
+    void updatePen(const QPen &pen);
+    void updateBrush(const QBrush &brush, const QPointF &pt);
+    void updateFont(const QFont &font);
+    void updateMatrix(const QTransform &matrix);
+    void updateClipRegion(const QRegion &region, Qt::ClipOperation op);
+    void updateRenderHints(QPainter::RenderHints hints);
+    void updateCompositionMode(QPainter::CompositionMode composition_mode);
+
+    void drawRects(const QRectF *r, int rectCount);
+    void drawLines(const QLineF *lines, int lineCount);
+    void drawPoints(const QPointF *p, int pointCount);
+    void drawRects(const QRect *r, int rectCount);
+    void drawLines(const QLine *lines, int lineCount);
+    void drawPoints(const QPoint *p, int pointCount);
+
+    void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
+
+    void drawPath(const QPainterPath &path);
+    void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
+    void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode);
+    void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);
+    void drawImage(const QRectF &r, const QImage &image, const QRectF &sr,
+                   Qt::ImageConversionFlags conversionFlags);
+    void drawTextItem(const QPointF &p, const QTextItem &ti);
+
+    void drawEllipse(const QRectF &rect);
+
+    QPixmapFilter *createPixmapFilter(int type) const;
+
+#ifdef Q_WS_WIN
+    HDC handle() const;
+#else
+    Qt::HANDLE handle() const;
+#endif
+    inline Type type() const { return QPaintEngine::OpenGL; }
+
+private:
+    void drawPolyInternal(const QPolygonF &pa, bool close = true);
+    void drawTextureRect(int tx_width, int tx_height, const QRectF &r, const QRectF &sr, GLenum target);
+    Q_DISABLE_COPY(QOpenGLPaintEngine)
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QPAINTENGINE_OPENGL_P_H