/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "WidgetUtilsGtk.h"

namespace mozilla {

namespace widget {

int32_t WidgetUtilsGTK::IsTouchDeviceSupportPresent()

{

#if GTK_CHECK_VERSION(3,4,0)

    int32_t result = 0;

    GdkDisplay* display = gdk_display_get_default();

    if (!display) {

        return 0;

    }

    GdkDeviceManager* manager = gdk_display_get_device_manager(display);

    if (!manager) {

        return 0;

    }

    GList* devices =

        gdk_device_manager_list_devices(manager, GDK_DEVICE_TYPE_SLAVE);

    GList* list = devices;

    while (devices) {

        GdkDevice* device = static_cast<GdkDevice*>(devices->data);

        if (gdk_device_get_source(device) == GDK_SOURCE_TOUCHSCREEN) {

            result = 1;

            break;

        }

        devices = devices->next;

   }

   if (list) {

       g_list_free(list);

   }

   return result;

#else

   return 0;

#endif

}

}  // namespace widget

} // namespace mozilla