2 * Copyright © 2011 Benjamin Franzke
3 * Copyright © 2011 Intel Corporation
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting documentation, and
9 * that the name of the copyright holders not be used in advertising or
10 * publicity pertaining to distribution of the software without specific,
11 * written prior permission. The copyright holders make no representations
12 * about the suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
32 #include <wayland-client.h>
33 #include "../shared/os-compatibility.h"
35 #define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
38 struct wl_display *display;
39 struct wl_registry *registry;
40 struct wl_compositor *compositor;
41 struct wl_shell *shell;
44 struct wl_touch *wl_touch;
45 struct wl_pointer *pointer;
46 struct wl_keyboard *keyboard;
47 struct wl_surface *surface;
48 struct wl_shell_surface *shell_surface;
49 struct wl_buffer *buffer;
56 create_shm_buffer(struct touch *touch)
58 struct wl_shm_pool *pool;
61 stride = touch->width * 4;
62 size = stride * touch->height;
64 fd = os_create_anonymous_file(size);
66 fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
72 mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
73 if (touch->data == MAP_FAILED) {
74 fprintf(stderr, "mmap failed: %m\n");
79 pool = wl_shm_create_pool(touch->shm, fd, size);
81 wl_shm_pool_create_buffer(pool, 0,
82 touch->width, touch->height, stride,
83 WL_SHM_FORMAT_ARGB8888);
84 wl_shm_pool_destroy(pool);
90 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
92 struct touch *touch = data;
94 if (format == WL_SHM_FORMAT_ARGB8888)
98 struct wl_shm_listener shm_listenter = {
104 touch_paint(struct touch *touch, int32_t x, int32_t y, int32_t id)
107 static const uint32_t colors[] = {
116 if (id < (int32_t) ARRAY_LENGTH(colors))
121 if (x < 2 || x >= touch->width - 2 ||
122 y < 2 || y >= touch->height - 2)
125 p = (uint32_t *) touch->data + (x - 2) + (y - 2) * touch->width;
144 wl_surface_damage(touch->surface, x - 2, y - 2, 5, 5);
145 /* todo: We could queue up more damage before committing, if there
146 * are more input events to handle.
148 wl_surface_commit(touch->surface);
152 touch_handle_down(void *data, struct wl_touch *wl_touch,
153 uint32_t serial, uint32_t time, struct wl_surface *surface,
154 int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
156 struct touch *touch = data;
157 float x = wl_fixed_to_double(x_w);
158 float y = wl_fixed_to_double(y_w);
160 touch_paint(touch, x, y, id);
164 touch_handle_up(void *data, struct wl_touch *wl_touch,
165 uint32_t serial, uint32_t time, int32_t id)
170 touch_handle_motion(void *data, struct wl_touch *wl_touch,
171 uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
173 struct touch *touch = data;
174 float x = wl_fixed_to_double(x_w);
175 float y = wl_fixed_to_double(y_w);
177 touch_paint(touch, x, y, id);
181 touch_handle_frame(void *data, struct wl_touch *wl_touch)
186 touch_handle_cancel(void *data, struct wl_touch *wl_touch)
190 static const struct wl_touch_listener touch_listener = {
199 seat_handle_capabilities(void *data, struct wl_seat *seat,
200 enum wl_seat_capability caps)
202 struct touch *touch = data;
204 if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !touch->wl_touch) {
205 touch->wl_touch = wl_seat_get_touch(seat);
206 wl_touch_set_user_data(touch->wl_touch, touch);
207 wl_touch_add_listener(touch->wl_touch, &touch_listener, touch);
208 } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && touch->wl_touch) {
209 wl_touch_destroy(touch->wl_touch);
210 touch->wl_touch = NULL;
214 static const struct wl_seat_listener seat_listener = {
215 seat_handle_capabilities,
219 handle_ping(void *data, struct wl_shell_surface *shell_surface,
222 wl_shell_surface_pong(shell_surface, serial);
226 handle_configure(void *data, struct wl_shell_surface *shell_surface,
227 uint32_t edges, int32_t width, int32_t height)
232 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
236 static const struct wl_shell_surface_listener shell_surface_listener = {
243 handle_global(void *data, struct wl_registry *registry,
244 uint32_t name, const char *interface, uint32_t version)
246 struct touch *touch = data;
248 if (strcmp(interface, "wl_compositor") == 0) {
250 wl_registry_bind(registry, name,
251 &wl_compositor_interface, 1);
252 } else if (strcmp(interface, "wl_shell") == 0) {
254 wl_registry_bind(registry, name,
255 &wl_shell_interface, 1);
256 } else if (strcmp(interface, "wl_shm") == 0) {
257 touch->shm = wl_registry_bind(registry, name,
258 &wl_shm_interface, 1);
259 wl_shm_add_listener(touch->shm, &shm_listenter, touch);
260 } else if (strcmp(interface, "wl_seat") == 0) {
261 touch->seat = wl_registry_bind(registry, name,
262 &wl_seat_interface, 1);
263 wl_seat_add_listener(touch->seat, &seat_listener, touch);
267 static const struct wl_registry_listener registry_listener = {
271 static struct touch *
272 touch_create(int width, int height)
276 touch = malloc(sizeof *touch);
277 touch->display = wl_display_connect(NULL);
278 assert(touch->display);
281 touch->registry = wl_display_get_registry(touch->display);
282 wl_registry_add_listener(touch->registry, ®istry_listener, touch);
283 wl_display_dispatch(touch->display);
284 wl_display_roundtrip(touch->display);
286 if (!touch->has_argb) {
287 fprintf(stderr, "WL_SHM_FORMAT_ARGB32 not available\n");
291 wl_display_get_fd(touch->display);
293 touch->width = width;
294 touch->height = height;
295 touch->surface = wl_compositor_create_surface(touch->compositor);
296 touch->shell_surface = wl_shell_get_shell_surface(touch->shell,
298 create_shm_buffer(touch);
300 if (touch->shell_surface) {
301 wl_shell_surface_add_listener(touch->shell_surface,
302 &shell_surface_listener, touch);
303 wl_shell_surface_set_toplevel(touch->shell_surface);
306 wl_surface_set_user_data(touch->surface, touch);
307 wl_shell_surface_set_title(touch->shell_surface, "simple-touch");
309 memset(touch->data, 64, width * height * 4);
310 wl_surface_attach(touch->surface, touch->buffer, 0, 0);
311 wl_surface_damage(touch->surface, 0, 0, width, height);
312 wl_surface_commit(touch->surface);
318 main(int argc, char **argv)
323 touch = touch_create(600, 500);
326 ret = wl_display_dispatch(touch->display);