1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20 */
21
22 /* Contributed by Thomas Perl <thomas.perl@jollamobile.com> */
23
24 #include "../../SDL_internal.h"
25
26 #ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
27
28 #include "SDL_log.h"
29 #include "SDL_waylandtouch.h"
30 #include "../../events/SDL_touch_c.h"
31
32 struct SDL_WaylandTouch {
33 struct qt_touch_extension *touch_extension;
34 };
35
36
37 /**
38 * Qt TouchPointState
39 * adapted from qtbase/src/corelib/global/qnamespace.h
40 **/
41 enum QtWaylandTouchPointState {
42 QtWaylandTouchPointPressed = 0x01,
43 QtWaylandTouchPointMoved = 0x02,
44 /*
45 Never sent by the server:
46 QtWaylandTouchPointStationary = 0x04,
47 */
48 QtWaylandTouchPointReleased = 0x08,
49 };
50
51 static void
touch_handle_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)52 touch_handle_touch(void *data,
53 struct qt_touch_extension *qt_touch_extension,
54 uint32_t time,
55 uint32_t id,
56 uint32_t state,
57 int32_t x,
58 int32_t y,
59 int32_t normalized_x,
60 int32_t normalized_y,
61 int32_t width,
62 int32_t height,
63 uint32_t pressure,
64 int32_t velocity_x,
65 int32_t velocity_y,
66 uint32_t flags,
67 struct wl_array *rawdata)
68 {
69 /**
70 * Event is assembled in QtWayland in TouchExtensionGlobal::postTouchEvent
71 * (src/compositor/wayland_wrapper/qwltouch.cpp)
72 **/
73
74 float FIXED_TO_FLOAT = 1. / 10000.;
75 float xf = FIXED_TO_FLOAT * x;
76 float yf = FIXED_TO_FLOAT * y;
77
78 float PRESSURE_TO_FLOAT = 1. / 255.;
79 float pressuref = PRESSURE_TO_FLOAT * pressure;
80
81 uint32_t touchState = state & 0xFFFF;
82 /*
83 Other fields that are sent by the server (qwltouch.cpp),
84 but not used at the moment can be decoded in this way:
85
86 uint32_t sentPointCount = state >> 16;
87 uint32_t touchFlags = flags & 0xFFFF;
88 uint32_t capabilities = flags >> 16;
89 */
90
91 SDL_TouchID deviceId = 1;
92 if (SDL_AddTouch(deviceId, "qt_touch_extension") < 0) {
93 SDL_Log("error: can't add touch %s, %d", __FILE__, __LINE__);
94 }
95
96 switch (touchState) {
97 case QtWaylandTouchPointPressed:
98 case QtWaylandTouchPointReleased:
99 SDL_SendTouch(deviceId, (SDL_FingerID)id,
100 (touchState == QtWaylandTouchPointPressed) ? SDL_TRUE : SDL_FALSE,
101 xf, yf, pressuref);
102 break;
103 case QtWaylandTouchPointMoved:
104 SDL_SendTouchMotion(deviceId, (SDL_FingerID)id, xf, yf, pressuref);
105 break;
106 default:
107 /* Should not happen */
108 break;
109 }
110 }
111
112 static void
touch_handle_configure(void * data,struct qt_touch_extension * qt_touch_extension,uint32_t flags)113 touch_handle_configure(void *data,
114 struct qt_touch_extension *qt_touch_extension,
115 uint32_t flags)
116 {
117 }
118
119
120 /* wayland-qt-touch-extension.c BEGINS */
121
122 static const struct qt_touch_extension_listener touch_listener = {
123 touch_handle_touch,
124 touch_handle_configure,
125 };
126
127 static const struct wl_interface *qt_touch_extension_types[] = {
128 NULL,
129 NULL,
130 NULL,
131 NULL,
132 NULL,
133 NULL,
134 NULL,
135 NULL,
136 NULL,
137 NULL,
138 NULL,
139 NULL,
140 NULL,
141 NULL,
142 };
143
144 static const struct wl_message qt_touch_extension_requests[] = {
145 { "dummy", "", qt_touch_extension_types + 0 },
146 };
147
148 static const struct wl_message qt_touch_extension_events[] = {
149 { "touch", "uuuiiiiiiuiiua", qt_touch_extension_types + 0 },
150 { "configure", "u", qt_touch_extension_types + 0 },
151 };
152
153 WL_EXPORT const struct wl_interface qt_touch_extension_interface = {
154 "qt_touch_extension", 1,
155 1, qt_touch_extension_requests,
156 2, qt_touch_extension_events,
157 };
158
159 /* wayland-qt-touch-extension.c ENDS */
160
161 /* wayland-qt-windowmanager.c BEGINS */
162 static const struct wl_interface *qt_windowmanager_types[] = {
163 NULL,
164 NULL,
165 };
166
167 static const struct wl_message qt_windowmanager_requests[] = {
168 { "open_url", "us", qt_windowmanager_types + 0 },
169 };
170
171 static const struct wl_message qt_windowmanager_events[] = {
172 { "hints", "i", qt_windowmanager_types + 0 },
173 { "quit", "", qt_windowmanager_types + 0 },
174 };
175
176 WL_EXPORT const struct wl_interface qt_windowmanager_interface = {
177 "qt_windowmanager", 1,
178 1, qt_windowmanager_requests,
179 2, qt_windowmanager_events,
180 };
181 /* wayland-qt-windowmanager.c ENDS */
182
183 /* wayland-qt-surface-extension.c BEGINS */
184 extern const struct wl_interface qt_extended_surface_interface;
185 #ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
186 extern const struct wl_interface wl_surface_interface;
187 #endif
188
189 static const struct wl_interface *qt_surface_extension_types[] = {
190 NULL,
191 NULL,
192 &qt_extended_surface_interface,
193 #ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
194 /* FIXME: Set this dynamically to (*WAYLAND_wl_surface_interface) ?
195 * The value comes from auto generated code and does
196 * not appear to actually be used anywhere
197 */
198 NULL,
199 #else
200 &wl_surface_interface,
201 #endif
202 };
203
204 static const struct wl_message qt_surface_extension_requests[] = {
205 { "get_extended_surface", "no", qt_surface_extension_types + 2 },
206 };
207
208 WL_EXPORT const struct wl_interface qt_surface_extension_interface = {
209 "qt_surface_extension", 1,
210 1, qt_surface_extension_requests,
211 0, NULL,
212 };
213
214 static const struct wl_message qt_extended_surface_requests[] = {
215 { "update_generic_property", "sa", qt_surface_extension_types + 0 },
216 { "set_content_orientation", "i", qt_surface_extension_types + 0 },
217 { "set_window_flags", "i", qt_surface_extension_types + 0 },
218 };
219
220 static const struct wl_message qt_extended_surface_events[] = {
221 { "onscreen_visibility", "i", qt_surface_extension_types + 0 },
222 { "set_generic_property", "sa", qt_surface_extension_types + 0 },
223 { "close", "", qt_surface_extension_types + 0 },
224 };
225
226 WL_EXPORT const struct wl_interface qt_extended_surface_interface = {
227 "qt_extended_surface", 1,
228 3, qt_extended_surface_requests,
229 3, qt_extended_surface_events,
230 };
231
232 /* wayland-qt-surface-extension.c ENDS */
233
234 void
Wayland_touch_create(SDL_VideoData * data,uint32_t id)235 Wayland_touch_create(SDL_VideoData *data, uint32_t id)
236 {
237 struct SDL_WaylandTouch *touch;
238
239 if (data->touch) {
240 Wayland_touch_destroy(data);
241 }
242
243 /* !!! FIXME: check for failure, call SDL_OutOfMemory() */
244 data->touch = SDL_malloc(sizeof(struct SDL_WaylandTouch));
245
246 touch = data->touch;
247 touch->touch_extension = wl_registry_bind(data->registry, id, &qt_touch_extension_interface, 1);
248 qt_touch_extension_add_listener(touch->touch_extension, &touch_listener, data);
249 }
250
251 void
Wayland_touch_destroy(SDL_VideoData * data)252 Wayland_touch_destroy(SDL_VideoData *data)
253 {
254 if (data->touch) {
255 struct SDL_WaylandTouch *touch = data->touch;
256 if (touch->touch_extension) {
257 qt_touch_extension_destroy(touch->touch_extension);
258 }
259
260 SDL_free(data->touch);
261 data->touch = NULL;
262 }
263 }
264
265 #endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
266