wayland-protocols: Add protocol for stylus support

third_party/wayland-protocols/include/protocol/stylus-unstable-v1-server-protocol.h

+/* 
+ * Copyright 2016 The Chromium Authors.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef STYLUS_UNSTABLE_V1_SERVER_PROTOCOL_H
+#define STYLUS_UNSTABLE_V1_SERVER_PROTOCOL_H
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-util.h"
+
+struct wl_client;
+struct wl_resource;
+
+struct zwp_stylus_v1;
+struct zwp_pointer_stylus_v1;
+
+extern const struct wl_interface zwp_stylus_v1_interface;
+extern const struct wl_interface zwp_pointer_stylus_v1_interface;
+
+/**
+ * zwp_stylus_v1 - extends wl_pointer with events for on-screen stylus
+ * @get_pointer_stylus: get stylus interface for pointer
+ *
+ * Allows a wl_pointer to represent an on-screen stylus. The client can
+ * interpret the on-screen stylus like any other mouse device, and use this
+ * protocol to obtain detail information about the type of stylus, as well
+ * as the force and tilt of the tool.
+ *
+ * These events are to be fired by the server within the same frame as
+ * other wl_pointer events.
+ *
+ * Warning! The protocol described in this file is experimental and
+ * backward incompatible changes may be made. Backward compatible changes
+ * may be added together with the corresponding uinterface version bump.
+ * Backward incompatible changes are done by bumping the version number in
+ * the protocol and uinterface names and resetting the interface version.
+ * Once the protocol is to be declared stable, the 'z' prefix and the
+ * version number in the protocol and interface names are removed and the
+ * interface version number is reset.
+ */
+struct zwp_stylus_v1_interface {
+        /**
+         * get_pointer_stylus - get stylus interface for pointer
+         * @id: (none)
+         * @pointer: (none)
+         *
+         * Create pointer_stylus object. See zwp_pointer_stylus_v1
+         * interface for details.
+         */
+        void (*get_pointer_stylus)(struct wl_client *client,
+                                   struct wl_resource *resource,
+                                   uint32_t id,
+                                   struct wl_resource *pointer);
+};
+
+#ifndef ZWP_POINTER_STYLUS_V1_TOOL_TYPE_ENUM
+#define ZWP_POINTER_STYLUS_V1_TOOL_TYPE_ENUM
+/**
+ * zwp_pointer_stylus_v1_tool_type - tool type of device.
+ * @ZWP_POINTER_STYLUS_V1_TOOL_TYPE_MOUSE: Mouse or touchpad, not a
+ *      stylus.
+ * @ZWP_POINTER_STYLUS_V1_TOOL_TYPE_PEN: Pen
+ * @ZWP_POINTER_STYLUS_V1_TOOL_TYPE_TOUCH: Touch
+ * @ZWP_POINTER_STYLUS_V1_TOOL_TYPE_ERASER: Eraser
+ *
+ * 
+ */
+enum zwp_pointer_stylus_v1_tool_type {
+        ZWP_POINTER_STYLUS_V1_TOOL_TYPE_MOUSE = 0,
+        ZWP_POINTER_STYLUS_V1_TOOL_TYPE_PEN = 1,
+        ZWP_POINTER_STYLUS_V1_TOOL_TYPE_TOUCH = 2,
+        ZWP_POINTER_STYLUS_V1_TOOL_TYPE_ERASER = 3,
+};
+#endif /* ZWP_POINTER_STYLUS_V1_TOOL_TYPE_ENUM */
+
+/**
+ * zwp_pointer_stylus_v1 - stylus extension for pointer
+ * @destroy: destroy stylus object
+ *
+ * The zwp_pointer_stylus_v1 interface extends the wl_pointer interface
+ * with events to describe details about a stylus acting as a pointer.
+ */
+struct zwp_pointer_stylus_v1_interface {
+        /**
+         * destroy - destroy stylus object
+         *
+         * 
+         */
+        void (*destroy)(struct wl_client *client,
+                        struct wl_resource *resource);
+};
+
+#define ZWP_POINTER_STYLUS_V1_TOOL_CHANGE       0
+#define ZWP_POINTER_STYLUS_V1_FORCE     1
+#define ZWP_POINTER_STYLUS_V1_TILT      2
+
+static inline void
+zwp_pointer_stylus_v1_send_tool_change(struct wl_resource *resource_, uint32_t type)
+{
+        wl_resource_post_event(resource_, ZWP_POINTER_STYLUS_V1_TOOL_CHANGE, type);
+}
+
+static inline void
+zwp_pointer_stylus_v1_send_force(struct wl_resource *resource_, uint32_t time, wl_fixed_t force)
+{
+        wl_resource_post_event(resource_, ZWP_POINTER_STYLUS_V1_FORCE, time, force);
+}
+
+static inline void
+zwp_pointer_stylus_v1_send_tilt(struct wl_resource *resource_, uint32_t time, wl_fixed_t tilt_x, wl_fixed_t tilt_y)
+{
+        wl_resource_post_event(resource_, ZWP_POINTER_STYLUS_V1_TILT, time, tilt_x, tilt_y);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif