eglfs: Implement xlib based hook for testing

Add a hook implementation for X11 using xlib. This is primarily for testing.
xcb is not used since the x11/egl-mesa integration appears to be done through
xlib.

Currently, there is no input mechanism. The size can be adjusted using
EGLFS_X11_SIZE environment variable.

Change-Id: Ifcfbfd958d9d110d94e22f04dfad1f6c29818103
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

2 files changed, 94 insertions, 0 deletions

diff --git a/src/plugins/platforms/eglfs/eglfs.pro b/src/plugins/platforms/eglfs/eglfs.pro
index 89d56efc82..9a36cacd05 100644
--- a/src/plugins/platforms/eglfs/eglfs.pro
+++ b/src/plugins/platforms/eglfs/eglfs.pro
@@ -12,6 +12,10 @@ DESTDIR = $$QT.gui.plugins/platforms
 #Avoid X11 header collision
 DEFINES += MESA_EGL_NO_X11_HEADERS
 
+#To test the hooks on x11 (xlib), comment the above define too
+#EGLFS_PLATFORM_HOOKS_SOURCES += qeglfs_hooks_x11.cpp
+#LIBS += -lX11
+
 SOURCES =   main.cpp \
             qeglfsintegration.cpp \
             qeglfswindow.cpp \
diff --git a/src/plugins/platforms/eglfs/qeglfs_hooks_x11.cpp b/src/plugins/platforms/eglfs/qeglfs_hooks_x11.cpp
new file mode 100644
index 0000000000..baba3be492
--- /dev/null
+++ b/src/plugins/platforms/eglfs/qeglfs_hooks_x11.cpp
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the qmake spec 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 "qeglfs_hooks.h"
+
+#include <X11/Xlib.h>
+
+QEglFSHooks platform_hooks;
+static Display *display = 0;
+
+void QEglFSHooks::platformInit()
+{
+    display = XOpenDisplay(NULL);
+    if (!display)
+        qFatal("Could not open display");
+}
+
+void QEglFSHooks::platformDestroy()
+{
+    XCloseDisplay(display);
+}
+
+EGLNativeDisplayType QEglFSHooks::platformDisplay() const
+{
+    return display;
+}
+
+QSize QEglFSHooks::screenSize() const
+{
+    QList<QByteArray> env = qgetenv("EGLFS_X11_SIZE").split('x');
+    if (env.length() != 2)
+        return QSize(640, 480);
+    return QSize(env.at(0).toInt(), env.at(1).toInt());
+}
+
+EGLNativeWindowType QEglFSHooks::createNativeWindow(const QSize &size)
+{
+    Window root = DefaultRootWindow(display);
+    XSetWindowAttributes swa;
+    memset(&swa, 0, sizeof(swa));
+    Window win  = XCreateWindow(display, root, 0, 0, size.width(), size.height(), 0, CopyFromParent,
+                                InputOutput, CopyFromParent, CWEventMask, &swa);
+    XMapWindow(display, win);
+    XStoreName(display, win, "EGLFS");
+    return win;
+}
+
+void QEglFSHooks::destroyNativeWindow(EGLNativeWindowType window)
+{
+    XDestroyWindow(display, window);
+}
+