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+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QOPENGLCOMPOSITOR_H
+#define QOPENGLCOMPOSITOR_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/QTimer>
+#include <QtGui/private/qopengltextureblitter_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLContext;
+class QWindow;
+class QPlatformTextureList;
+
+class QOpenGLCompositorWindow
+{
+public:
+ virtual QWindow *sourceWindow() const = 0;
+ virtual const QPlatformTextureList *textures() const = 0;
+ virtual void beginCompositing() { }
+ virtual void endCompositing() { }
+};
+
+class QOpenGLCompositor : public QObject
+{
+ Q_OBJECT
+
+public:
+ static QOpenGLCompositor *instance();
+ static void destroy();
+
+ void setTarget(QOpenGLContext *context, QWindow *window);
+ QOpenGLContext *context() const { return m_context; }
+ QWindow *targetWindow() const { return m_targetWindow; }
+
+ void update();
+
+ QList<QOpenGLCompositorWindow *> windows() const { return m_windows; }
+ void addWindow(QOpenGLCompositorWindow *window);
+ void removeWindow(QOpenGLCompositorWindow *window);
+ void moveToTop(QOpenGLCompositorWindow *window);
+ void changeWindowIndex(QOpenGLCompositorWindow *window, int newIdx);
+
+signals:
+ void topWindowChanged(QOpenGLCompositorWindow *window);
+
+private slots:
+ void renderAll();
+
+private:
+ QOpenGLCompositor();
+ ~QOpenGLCompositor();
+
+ void render(QOpenGLCompositorWindow *window);
+
+ QOpenGLContext *m_context;
+ QWindow *m_targetWindow;
+ QTimer m_updateTimer;
+ QOpenGLTextureBlitter m_blitter;
+ QList<QOpenGLCompositorWindow *> m_windows;
+};
+
+QT_END_NAMESPACE
+
+#endif // QOPENGLCOMPOSITOR_H