Add minimalegl QPA platform plugin

The EGLFS platform plugin was originally meant to be an example
and thus to be kept simple. However, EGLFS is becoming more
and more complex with the addition of hooks for board support,
cursor integration, built-in evdev support etc.

minimalegl is a new platform plugin that intends to follow
the original intentions of EGLFS.

The code is an adaptation of EGLFS as of f913859f8

Change-Id: I3d4cf84cde380cdcc7e0e8bfefff4df6be731b8d
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/src/plugins/platforms/minimalegl/qminimaleglintegration.cpp b/src/plugins/platforms/minimalegl/qminimaleglintegration.cpp
new file mode 100644
index 0000000000..d4e44e58b1
--- /dev/null
+++ b/src/plugins/platforms/minimalegl/qminimaleglintegration.cpp
@@ -0,0 +1,126 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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 1.1, 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qminimaleglintegration.h"
+
+#include "qminimaleglwindow.h"
+#include "qminimaleglbackingstore.h"
+
+#include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
+#include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
+
+#include <qpa/qplatformwindow.h>
+#include <QtGui/QSurfaceFormat>
+#include <QtGui/QOpenGLContext>
+#include <QtGui/QScreen>
+
+#include <EGL/egl.h>
+
+QT_BEGIN_NAMESPACE
+
+QMinimalEglIntegration::QMinimalEglIntegration()
+    : mFontDb(new QGenericUnixFontDatabase()), mScreen(new QMinimalEglScreen(EGL_DEFAULT_DISPLAY))
+{
+    screenAdded(mScreen);
+
+#ifdef QEGL_EXTRA_DEBUG
+    qWarning("QMinimalEglIntegration\n");
+#endif
+}
+
+QMinimalEglIntegration::~QMinimalEglIntegration()
+{
+    delete mScreen;
+}
+
+bool QMinimalEglIntegration::hasCapability(QPlatformIntegration::Capability cap) const
+{
+    switch (cap) {
+    case ThreadedPixmaps: return true;
+    case OpenGL: return true;
+    case ThreadedOpenGL: return true;
+    default: return QPlatformIntegration::hasCapability(cap);
+    }
+}
+
+QPlatformWindow *QMinimalEglIntegration::createPlatformWindow(QWindow *window) const
+{
+#ifdef QEGL_EXTRA_DEBUG
+    qWarning("QMinimalEglIntegration::createPlatformWindow %p\n",window);
+#endif
+    QPlatformWindow *w = new QMinimalEglWindow(window);
+    w->requestActivateWindow();
+    return w;
+}
+
+
+QPlatformBackingStore *QMinimalEglIntegration::createPlatformBackingStore(QWindow *window) const
+{
+#ifdef QEGL_EXTRA_DEBUG
+    qWarning("QMinimalEglIntegration::createWindowSurface %p\n", window);
+#endif
+    return new QMinimalEglBackingStore(window);
+}
+
+QPlatformOpenGLContext *QMinimalEglIntegration::createPlatformOpenGLContext(QOpenGLContext *context) const
+{
+    return static_cast<QMinimalEglScreen *>(context->screen()->handle())->platformContext();
+}
+
+QPlatformFontDatabase *QMinimalEglIntegration::fontDatabase() const
+{
+    return mFontDb;
+}
+
+QAbstractEventDispatcher *QMinimalEglIntegration::guiThreadEventDispatcher() const
+{
+    return createUnixEventDispatcher();
+}
+
+QVariant QMinimalEglIntegration::styleHint(QPlatformIntegration::StyleHint hint) const
+{
+    if (hint == QPlatformIntegration::ShowIsFullScreen)
+        return true;
+
+    return QPlatformIntegration::styleHint(hint);
+}
+
+QT_END_NAMESPACE