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diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.h
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+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.h
@@ -0,0 +1,352 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL_waylandtouch_h_
+#define SDL_waylandtouch_h_
+
+#include "../../SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+
+#include "SDL_waylandvideo.h"
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-util.h"
+#include "SDL_waylanddyn.h"
+
+
+void Wayland_touch_create(SDL_VideoData *data, uint32_t id);
+void Wayland_touch_destroy(SDL_VideoData *data);
+
+struct qt_touch_extension;
+
+/* Autogenerated QT headers */
+
+/*
+ Support for Wayland with QmlCompositor as Server
+================================================
+
+The Wayland video driver has support for some additional features when
+using QtWayland's "qmlcompositor" as Wayland server. This is needed for touch
+input when running SDL applications under a qmlcompositor Wayland server.
+
+The files following headers have been
+generated from the Wayland XML Protocol Definition in QtWayland as follows:
+
+Clone QtWayland from Git:
+    http://qt.gitorious.org/qt/qtwayland/
+
+Generate headers and glue code:
+    for extension in touch-extension surface-extension windowmanager; do
+        wayland-scanner client-header < src/extensions/$extension.xml > wayland-qt-$extension.h
+        wayland-scanner code < src/extensions/$extension.xml > wayland-qt-$extension.c
+    done
+
+*/
+
+/* wayland-qt-surface-extension.h */
+
+struct wl_client;
+struct wl_resource;
+
+struct qt_surface_extension;
+struct qt_extended_surface;
+
+extern const struct wl_interface qt_surface_extension_interface;
+extern const struct wl_interface qt_extended_surface_interface;
+
+#define QT_SURFACE_EXTENSION_GET_EXTENDED_SURFACE   0
+
+static inline void
+qt_surface_extension_set_user_data(struct qt_surface_extension *qt_surface_extension, void *user_data)
+{
+    wl_proxy_set_user_data((struct wl_proxy *) qt_surface_extension, user_data);
+}
+
+static inline void *
+qt_surface_extension_get_user_data(struct qt_surface_extension *qt_surface_extension)
+{
+    return wl_proxy_get_user_data((struct wl_proxy *) qt_surface_extension);
+}
+
+static inline void
+qt_surface_extension_destroy(struct qt_surface_extension *qt_surface_extension)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_surface_extension);
+}
+
+static inline struct qt_extended_surface *
+qt_surface_extension_get_extended_surface(struct qt_surface_extension *qt_surface_extension, struct wl_surface *surface)
+{
+    struct wl_proxy *id;
+
+    id = wl_proxy_create((struct wl_proxy *) qt_surface_extension,
+                 &qt_extended_surface_interface);
+    if (!id)
+        return NULL;
+
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_surface_extension,
+             QT_SURFACE_EXTENSION_GET_EXTENDED_SURFACE, id, surface);
+
+    return (struct qt_extended_surface *) id;
+}
+
+#ifndef QT_EXTENDED_SURFACE_ORIENTATION_ENUM
+#define QT_EXTENDED_SURFACE_ORIENTATION_ENUM
+enum qt_extended_surface_orientation {
+    QT_EXTENDED_SURFACE_ORIENTATION_PRIMARYORIENTATION = 0,
+    QT_EXTENDED_SURFACE_ORIENTATION_PORTRAITORIENTATION = 1,
+    QT_EXTENDED_SURFACE_ORIENTATION_LANDSCAPEORIENTATION = 2,
+    QT_EXTENDED_SURFACE_ORIENTATION_INVERTEDPORTRAITORIENTATION = 4,
+    QT_EXTENDED_SURFACE_ORIENTATION_INVERTEDLANDSCAPEORIENTATION = 8,
+};
+#endif /* QT_EXTENDED_SURFACE_ORIENTATION_ENUM */
+
+#ifndef QT_EXTENDED_SURFACE_WINDOWFLAG_ENUM
+#define QT_EXTENDED_SURFACE_WINDOWFLAG_ENUM
+enum qt_extended_surface_windowflag {
+    QT_EXTENDED_SURFACE_WINDOWFLAG_OVERRIDESSYSTEMGESTURES = 1,
+    QT_EXTENDED_SURFACE_WINDOWFLAG_STAYSONTOP = 2,
+};
+#endif /* QT_EXTENDED_SURFACE_WINDOWFLAG_ENUM */
+
+struct qt_extended_surface_listener {
+    /**
+     * onscreen_visibility - (none)
+     * @visible: (none)
+     */
+    void (*onscreen_visibility)(void *data,
+                    struct qt_extended_surface *qt_extended_surface,
+                    int32_t visible);
+    /**
+     * set_generic_property - (none)
+     * @name: (none)
+     * @value: (none)
+     */
+    void (*set_generic_property)(void *data,
+                     struct qt_extended_surface *qt_extended_surface,
+                     const char *name,
+                     struct wl_array *value);
+    /**
+     * close - (none)
+     */
+    void (*close)(void *data,
+              struct qt_extended_surface *qt_extended_surface);
+};
+
+static inline int
+qt_extended_surface_add_listener(struct qt_extended_surface *qt_extended_surface,
+                 const struct qt_extended_surface_listener *listener, void *data)
+{
+    return wl_proxy_add_listener((struct wl_proxy *) qt_extended_surface,
+                     (void (**)(void)) listener, data);
+}
+
+#define QT_EXTENDED_SURFACE_UPDATE_GENERIC_PROPERTY 0
+#define QT_EXTENDED_SURFACE_SET_CONTENT_ORIENTATION 1
+#define QT_EXTENDED_SURFACE_SET_WINDOW_FLAGS    2
+
+static inline void
+qt_extended_surface_set_user_data(struct qt_extended_surface *qt_extended_surface, void *user_data)
+{
+    WAYLAND_wl_proxy_set_user_data((struct wl_proxy *) qt_extended_surface, user_data);
+}
+
+static inline void *
+qt_extended_surface_get_user_data(struct qt_extended_surface *qt_extended_surface)
+{
+    return WAYLAND_wl_proxy_get_user_data((struct wl_proxy *) qt_extended_surface);
+}
+
+static inline void
+qt_extended_surface_destroy(struct qt_extended_surface *qt_extended_surface)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_extended_surface);
+}
+
+static inline void
+qt_extended_surface_update_generic_property(struct qt_extended_surface *qt_extended_surface, const char *name, struct wl_array *value)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_extended_surface,
+             QT_EXTENDED_SURFACE_UPDATE_GENERIC_PROPERTY, name, value);
+}
+
+static inline void
+qt_extended_surface_set_content_orientation(struct qt_extended_surface *qt_extended_surface, int32_t orientation)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_extended_surface,
+             QT_EXTENDED_SURFACE_SET_CONTENT_ORIENTATION, orientation);
+}
+
+static inline void
+qt_extended_surface_set_window_flags(struct qt_extended_surface *qt_extended_surface, int32_t flags)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_extended_surface,
+             QT_EXTENDED_SURFACE_SET_WINDOW_FLAGS, flags);
+}
+
+/* wayland-qt-touch-extension.h */
+
+extern const struct wl_interface qt_touch_extension_interface;
+
+#ifndef QT_TOUCH_EXTENSION_FLAGS_ENUM
+#define QT_TOUCH_EXTENSION_FLAGS_ENUM
+enum qt_touch_extension_flags {
+    QT_TOUCH_EXTENSION_FLAGS_MOUSE_FROM_TOUCH = 0x1,
+};
+#endif /* QT_TOUCH_EXTENSION_FLAGS_ENUM */
+
+struct qt_touch_extension_listener {
+    /**
+     * touch - (none)
+     * @time: (none)
+     * @id: (none)
+     * @state: (none)
+     * @x: (none)
+     * @y: (none)
+     * @normalized_x: (none)
+     * @normalized_y: (none)
+     * @width: (none)
+     * @height: (none)
+     * @pressure: (none)
+     * @velocity_x: (none)
+     * @velocity_y: (none)
+     * @flags: (none)
+     * @rawdata: (none)
+     */
+    void (*touch)(void *data,
+              struct qt_touch_extension *qt_touch_extension,
+              uint32_t time,
+              uint32_t id,
+              uint32_t state,
+              int32_t x,
+              int32_t y,
+              int32_t normalized_x,
+              int32_t normalized_y,
+              int32_t width,
+              int32_t height,
+              uint32_t pressure,
+              int32_t velocity_x,
+              int32_t velocity_y,
+              uint32_t flags,
+              struct wl_array *rawdata);
+    /**
+     * configure - (none)
+     * @flags: (none)
+     */
+    void (*configure)(void *data,
+              struct qt_touch_extension *qt_touch_extension,
+              uint32_t flags);
+};
+
+static inline int
+qt_touch_extension_add_listener(struct qt_touch_extension *qt_touch_extension,
+                const struct qt_touch_extension_listener *listener, void *data)
+{
+    return wl_proxy_add_listener((struct wl_proxy *) qt_touch_extension,
+                     (void (**)(void)) listener, data);
+}
+
+#define QT_TOUCH_EXTENSION_DUMMY    0
+
+static inline void
+qt_touch_extension_set_user_data(struct qt_touch_extension *qt_touch_extension, void *user_data)
+{
+    WAYLAND_wl_proxy_set_user_data((struct wl_proxy *) qt_touch_extension, user_data);
+}
+
+static inline void *
+qt_touch_extension_get_user_data(struct qt_touch_extension *qt_touch_extension)
+{
+    return WAYLAND_wl_proxy_get_user_data((struct wl_proxy *) qt_touch_extension);
+}
+
+static inline void
+qt_touch_extension_destroy(struct qt_touch_extension *qt_touch_extension)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_touch_extension);
+}
+
+static inline void
+qt_touch_extension_dummy(struct qt_touch_extension *qt_touch_extension)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_touch_extension,
+             QT_TOUCH_EXTENSION_DUMMY);
+}
+
+
+/* wayland-qt-windowmanager.h */
+
+extern const struct wl_interface qt_windowmanager_interface;
+
+struct qt_windowmanager_listener {
+    /**
+     * hints - (none)
+     * @show_is_fullscreen: (none)
+     */
+    void (*hints)(void *data,
+              struct qt_windowmanager *qt_windowmanager,
+              int32_t show_is_fullscreen);
+    /**
+     * quit - (none)
+     */
+    void (*quit)(void *data,
+             struct qt_windowmanager *qt_windowmanager);
+};
+
+static inline int
+qt_windowmanager_add_listener(struct qt_windowmanager *qt_windowmanager,
+                  const struct qt_windowmanager_listener *listener, void *data)
+{
+    return wl_proxy_add_listener((struct wl_proxy *) qt_windowmanager,
+                     (void (**)(void)) listener, data);
+}
+
+#define QT_WINDOWMANAGER_OPEN_URL   0
+
+static inline void
+qt_windowmanager_set_user_data(struct qt_windowmanager *qt_windowmanager, void *user_data)
+{
+    WAYLAND_wl_proxy_set_user_data((struct wl_proxy *) qt_windowmanager, user_data);
+}
+
+static inline void *
+qt_windowmanager_get_user_data(struct qt_windowmanager *qt_windowmanager)
+{
+    return WAYLAND_wl_proxy_get_user_data((struct wl_proxy *) qt_windowmanager);
+}
+
+static inline void
+qt_windowmanager_destroy(struct qt_windowmanager *qt_windowmanager)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_windowmanager);
+}
+
+static inline void
+qt_windowmanager_open_url(struct qt_windowmanager *qt_windowmanager, uint32_t remaining, const char *url)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_windowmanager,
+             QT_WINDOWMANAGER_OPEN_URL, remaining, url);
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+#endif /* SDL_waylandtouch_h_ */