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     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtOpenVG module of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #ifndef QWINDOWSURFACE_VGEGL_P_H

    43 #define QWINDOWSURFACE_VGEGL_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists for the convenience

    50 // of the QLibrary class.  This header file may change from

    51 // version to version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include <QtGui/private/qwindowsurface_p.h>

    57 #include "qvg_p.h"

    58 

    59 #if !defined(QT_NO_EGL)

    60 

    61 #include <QtGui/private/qegl_p.h>

    62 

    63 QT_BEGIN_NAMESPACE

    64 

    65 class QWindowSurface;

    66 

    67 class Q_OPENVG_EXPORT QVGEGLWindowSurfacePrivate

    68 {

    69 public:

    70     QVGEGLWindowSurfacePrivate(QWindowSurface *win);

    71     virtual ~QVGEGLWindowSurfacePrivate();

    72 

    73     QVGPaintEngine *paintEngine();

    74     virtual QEglContext *ensureContext(QWidget *widget) = 0;

    75     virtual void beginPaint(QWidget *widget) = 0;

    76     virtual void endPaint

    77         (QWidget *widget, const QRegion& region, QImage *image = 0) = 0;

    78     virtual VGImage surfaceImage() const;

    79     virtual QSize surfaceSize() const = 0;

    80 

    81 private:

    82     QVGPaintEngine *engine;

    83 

    84 protected:

    85     QWindowSurface *winSurface;

    86 

    87     void destroyPaintEngine();

    88     QSize windowSurfaceSize(QWidget *widget) const;

    89 };

    90 

    91 #if defined(EGL_OPENVG_IMAGE) && !defined(QVG_NO_SINGLE_CONTEXT)

    92 

    93 #define QVG_VGIMAGE_BACKBUFFERS 1

    94 

    95 class Q_OPENVG_EXPORT QVGEGLWindowSurfaceVGImage : public QVGEGLWindowSurfacePrivate

    96 {

    97 public:

    98     QVGEGLWindowSurfaceVGImage(QWindowSurface *win);

    99     virtual ~QVGEGLWindowSurfaceVGImage();

   100 

   101     QEglContext *ensureContext(QWidget *widget);

   102     void beginPaint(QWidget *widget);

   103     void endPaint(QWidget *widget, const QRegion& region, QImage *image);

   104     VGImage surfaceImage() const;

   105     QSize surfaceSize() const { return size; }

   106 

   107 protected:

   108     QEglContext *context;

   109     VGImage backBuffer;

   110     EGLSurface backBufferSurface;

   111     bool recreateBackBuffer;

   112     bool isPaintingActive;

   113     QSize size;

   114     EGLSurface windowSurface;

   115 

   116     EGLSurface mainSurface() const;

   117 };

   118 

   119 #endif // EGL_OPENVG_IMAGE

   120 

   121 class Q_OPENVG_EXPORT QVGEGLWindowSurfaceDirect : public QVGEGLWindowSurfacePrivate

   122 {

   123 public:

   124     QVGEGLWindowSurfaceDirect(QWindowSurface *win);

   125     virtual ~QVGEGLWindowSurfaceDirect();

   126 

   127     QEglContext *ensureContext(QWidget *widget);

   128     void beginPaint(QWidget *widget);

   129     void endPaint(QWidget *widget, const QRegion& region, QImage *image);

   130     QSize surfaceSize() const { return size; }

   131 

   132 protected:

   133     QEglContext *context;

   134     QSize size;

   135     bool isPaintingActive;

   136     bool needToSwap;

   137     EGLSurface windowSurface;

   138 };

   139 

   140 QT_END_NAMESPACE

   141 

   142 #endif // !QT_NO_EGL

   143 

   144 #endif // QWINDOWSURFACE_VGEGL_P_H