Introducing QPlatformHardwareCompositor.

Can be used by applications to send hardware buffers directly to the
hardware compositor, if available. The primary usecase right now
will be from QtWayland to 2D composition of surface by bypassing
the OpenGL composition.

Change-Id: Ibdcdcc744c34869d3abbc11aad448a755f87161f
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/src/gui/kernel/qplatformhardwarecompositor.h b/src/gui/kernel/qplatformhardwarecompositor.h
new file mode 100644
index 0000000000..89c98a6262
--- /dev/null
+++ b/src/gui/kernel/qplatformhardwarecompositor.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Jolla Ltd, author: <gunnar.sletta@jollamobile.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 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, 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.
+**
+** 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is part of the QPA API and is not meant to be used
+// in applications. Usage of this API may make your code
+// source and binary incompatible with future versions of Qt.
+//
+
+#ifndef QPLATFORMHARDWARECOMPOSITOR_H
+#define QPLATFORMHARDWARECOMPOSITOR_H
+
+#include <QtGui/QMatrix4x4>
+#include <QtGui/QColor>
+
+QT_BEGIN_NAMESPACE
+
+class QPlatformGraphicsBuffer;
+
+class Q_GUI_EXPORT QPlatformHardwareCompositor : public QObject
+{
+    Q_OBJECT
+
+public:
+    struct Layer {
+        Layer();
+        QMatrix4x4 transform;
+        qreal opacity;
+        QRectF subRect;
+        QColor color;
+        QPlatformGraphicsBuffer *buffer;
+    };
+    virtual ~QPlatformHardwareCompositor() {}
+    virtual bool compose(const QVector<Layer> &layers) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPLATFORMHARDWARECOMPOSITOR_H