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     2 **

     3 ** Copyright (C) 2009 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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     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    15 **

    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     enum SurfaceType

    74     {

    75         WindowSurface,

    76         VGImageSurface,

    77         QImageSurface

    78     };

    79 

    80     static QVGEGLWindowSurfacePrivate *create

    81         (SurfaceType type, QWindowSurface *win);

    82 

    83     QVGPaintEngine *paintEngine();

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

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

    86     virtual void endPaint

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

    88     virtual VGImage surfaceImage() const;

    89     virtual QSize surfaceSize() const = 0;

    90 

    91 private:

    92     QVGPaintEngine *engine;

    93 

    94 protected:

    95     QWindowSurface *winSurface;

    96 

    97     void destroyPaintEngine();

    98     QSize windowSurfaceSize(QWidget *widget) const;

    99 };

   100 

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

   102 

   103 #define QVG_VGIMAGE_BACKBUFFERS 1

   104 

   105 class Q_OPENVG_EXPORT QVGEGLWindowSurfaceVGImage : public QVGEGLWindowSurfacePrivate

   106 {

   107 public:

   108     QVGEGLWindowSurfaceVGImage(QWindowSurface *win);

   109     virtual ~QVGEGLWindowSurfaceVGImage();

   110 

   111     QEglContext *ensureContext(QWidget *widget);

   112     void beginPaint(QWidget *widget);

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

   114     VGImage surfaceImage() const;

   115     QSize surfaceSize() const { return size; }

   116 

   117 protected:

   118     QEglContext *context;

   119     VGImage backBuffer;

   120     EGLSurface backBufferSurface;

   121     bool recreateBackBuffer;

   122     bool isPaintingActive;

   123     QSize size;

   124     EGLSurface windowSurface;

   125 

   126     EGLSurface mainSurface() const;

   127 };

   128 

   129 class Q_OPENVG_EXPORT QVGEGLWindowSurfaceQImage : public QVGEGLWindowSurfaceVGImage

   130 {

   131 public:

   132     QVGEGLWindowSurfaceQImage(QWindowSurface *win);

   133     virtual ~QVGEGLWindowSurfaceQImage();

   134 

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

   136 };

   137 

   138 #endif // EGL_OPENVG_IMAGE

   139 

   140 class Q_OPENVG_EXPORT QVGEGLWindowSurfaceDirect : public QVGEGLWindowSurfacePrivate

   141 {

   142 public:

   143     QVGEGLWindowSurfaceDirect(QWindowSurface *win);

   144     virtual ~QVGEGLWindowSurfaceDirect();

   145 

   146     QEglContext *ensureContext(QWidget *widget);

   147     void beginPaint(QWidget *widget);

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

   149     QSize surfaceSize() const { return size; }

   150 

   151 protected:

   152     QEglContext *context;

   153     QSize size;

   154     bool isPaintingActive;

   155     bool needToSwap;

   156     EGLSurface windowSurface;

   157 };

   158 

   159 QT_END_NAMESPACE

   160 

   161 #endif // !QT_NO_EGL

   162 

   163 #endif // QWINDOWSURFACE_VGEGL_P_H