Integrate the OpenVG graphics system into Qt 4.6

This change also moves the EGL support classes from QtOpenGL to QtGui
so they can be shared between OpenGL and OpenVG.

1 files changed, 163 insertions, 0 deletions

diff --git a/src/openvg/qwindowsurface_vgegl_p.h b/src/openvg/qwindowsurface_vgegl_p.h
new file mode 100644
index 0000000..aa23772
--- /dev/null
+++ b/src/openvg/qwindowsurface_vgegl_p.h
@@ -0,0 +1,163 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenVG 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWINDOWSURFACE_VGEGL_P_H
+#define QWINDOWSURFACE_VGEGL_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 <QtGui/private/qwindowsurface_p.h>
+#include "qvg_p.h"
+
+#if !defined(QT_NO_EGL)
+
+#include <QtGui/private/qegl_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QWindowSurface;
+
+class Q_OPENVG_EXPORT QVGEGLWindowSurfacePrivate
+{
+public:
+    QVGEGLWindowSurfacePrivate(QWindowSurface *win);
+    virtual ~QVGEGLWindowSurfacePrivate();
+
+    enum SurfaceType
+    {
+        WindowSurface,
+        VGImageSurface,
+        QImageSurface
+    };
+
+    static QVGEGLWindowSurfacePrivate *create
+        (SurfaceType type, QWindowSurface *win);
+
+    QVGPaintEngine *paintEngine();
+    virtual QEglContext *ensureContext(QWidget *widget) = 0;
+    virtual void beginPaint(QWidget *widget) = 0;
+    virtual void endPaint
+        (QWidget *widget, const QRegion& region, QImage *image = 0) = 0;
+    virtual VGImage surfaceImage() const;
+    virtual QSize surfaceSize() const = 0;
+
+private:
+    QVGPaintEngine *engine;
+
+protected:
+    QWindowSurface *winSurface;
+
+    void destroyPaintEngine();
+    QSize windowSurfaceSize(QWidget *widget) const;
+};
+
+#if defined(EGL_OPENVG_IMAGE) && !defined(QVG_NO_SINGLE_CONTEXT)
+
+#define QVG_VGIMAGE_BACKBUFFERS 1
+
+class Q_OPENVG_EXPORT QVGEGLWindowSurfaceVGImage : public QVGEGLWindowSurfacePrivate
+{
+public:
+    QVGEGLWindowSurfaceVGImage(QWindowSurface *win);
+    virtual ~QVGEGLWindowSurfaceVGImage();
+
+    QEglContext *ensureContext(QWidget *widget);
+    void beginPaint(QWidget *widget);
+    void endPaint(QWidget *widget, const QRegion& region, QImage *image);
+    VGImage surfaceImage() const;
+    QSize surfaceSize() const { return size; }
+
+protected:
+    QEglContext *context;
+    VGImage backBuffer;
+    EGLSurface backBufferSurface;
+    bool recreateBackBuffer;
+    bool isPaintingActive;
+    QSize size;
+    EGLSurface windowSurface;
+
+    EGLSurface mainSurface() const;
+};
+
+class Q_OPENVG_EXPORT QVGEGLWindowSurfaceQImage : public QVGEGLWindowSurfaceVGImage
+{
+public:
+    QVGEGLWindowSurfaceQImage(QWindowSurface *win);
+    virtual ~QVGEGLWindowSurfaceQImage();
+
+    void endPaint(QWidget *widget, const QRegion& region, QImage *image);
+};
+
+#endif // EGL_OPENVG_IMAGE
+
+class Q_OPENVG_EXPORT QVGEGLWindowSurfaceDirect : public QVGEGLWindowSurfacePrivate
+{
+public:
+    QVGEGLWindowSurfaceDirect(QWindowSurface *win);
+    virtual ~QVGEGLWindowSurfaceDirect();
+
+    QEglContext *ensureContext(QWidget *widget);
+    void beginPaint(QWidget *widget);
+    void endPaint(QWidget *widget, const QRegion& region, QImage *image);
+    QSize surfaceSize() const { return size; }
+
+protected:
+    QEglContext *context;
+    QSize size;
+    bool isPaintingActive;
+    bool needToSwap;
+    EGLSurface windowSurface;
+};
+
+QT_END_NAMESPACE
+
+#endif // !QT_NO_EGL
+
+#endif // QWINDOWSURFACE_VGEGL_P_H