1 /*
2 * Copyright © 2014 Jason Ekstrand
3 * Copyright © 2011 Benjamin Franzke
4 * Copyright © 2010 Intel Corporation
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "config.h"
27
28 #include <stdint.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <stdbool.h>
33 #include <assert.h>
34 #include <unistd.h>
35 #include <sys/mman.h>
36 #include <sys/time.h>
37 #include <signal.h>
38 #include <errno.h>
39
40 #include <wayland-client.h>
41 #include "shared/os-compatibility.h"
42 #include <libweston/zalloc.h>
43 #include "xdg-shell-client-protocol.h"
44 #include "fullscreen-shell-unstable-v1-client-protocol.h"
45 #include "viewporter-client-protocol.h"
46
47 int print_debug = 0;
48
49 struct display {
50 struct wl_display *display;
51 struct wl_registry *registry;
52 int compositor_version;
53 struct wl_compositor *compositor;
54 struct wp_viewporter *viewporter;
55 struct xdg_wm_base *wm_base;
56 struct zwp_fullscreen_shell_v1 *fshell;
57 struct wl_shm *shm;
58 uint32_t formats;
59 };
60
61 struct buffer {
62 struct wl_buffer *buffer;
63 uint32_t *shm_data;
64 int busy;
65 };
66
67 enum window_flags {
68 WINDOW_FLAG_USE_VIEWPORT = 0x1,
69 WINDOW_FLAG_ROTATING_TRANSFORM = 0x2,
70 WINDOW_FLAG_USE_DAMAGE_BUFFER = 0x4,
71 };
72
73 struct window {
74 struct display *display;
75 int width, height, border;
76 struct wl_surface *surface;
77 struct wp_viewport *viewport;
78 struct xdg_surface *xdg_surface;
79 struct xdg_toplevel *xdg_toplevel;
80 struct wl_callback *callback;
81 struct buffer buffers[2];
82 struct buffer *prev_buffer;
83 bool wait_for_configure;
84
85 enum window_flags flags;
86 int scale;
87 enum wl_output_transform transform;
88
89 struct {
90 float x, y; /* position in pixels */
91 float dx, dy; /* velocity in pixels/second */
92 int radius; /* radius in pixels */
93 uint32_t prev_time;
94 } ball;
95 };
96
97 static int running = 1;
98
99 static void
100 redraw(void *data, struct wl_callback *callback, uint32_t time);
101
102 static void
buffer_release(void * data,struct wl_buffer * buffer)103 buffer_release(void *data, struct wl_buffer *buffer)
104 {
105 struct buffer *mybuf = data;
106
107 mybuf->busy = 0;
108 }
109
110 static const struct wl_buffer_listener buffer_listener = {
111 buffer_release
112 };
113
114 static int
create_shm_buffer(struct display * display,struct buffer * buffer,int width,int height,uint32_t format)115 create_shm_buffer(struct display *display, struct buffer *buffer,
116 int width, int height, uint32_t format)
117 {
118 struct wl_shm_pool *pool;
119 int fd, size, pitch;
120 void *data;
121
122 pitch = width * 4;
123 size = pitch * height;
124
125 fd = os_create_anonymous_file(size);
126 if (fd < 0) {
127 fprintf(stderr, "creating a buffer file for %d B failed: %s\n",
128 size, strerror(errno));
129 return -1;
130 }
131
132 data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
133 if (data == MAP_FAILED) {
134 fprintf(stderr, "mmap failed: %s\n", strerror(errno));
135 close(fd);
136 return -1;
137 }
138
139 pool = wl_shm_create_pool(display->shm, fd, size);
140 buffer->buffer = wl_shm_pool_create_buffer(pool, 0,
141 width, height,
142 pitch, format);
143 wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer);
144 wl_shm_pool_destroy(pool);
145 close(fd);
146
147 buffer->shm_data = data;
148
149 return 0;
150 }
151
152 static void
xdg_surface_handle_configure(void * data,struct xdg_surface * surface,uint32_t serial)153 xdg_surface_handle_configure(void *data, struct xdg_surface *surface,
154 uint32_t serial)
155 {
156 struct window *window = data;
157
158 xdg_surface_ack_configure(surface, serial);
159
160 if (window->wait_for_configure) {
161 redraw(window, NULL, 0);
162 window->wait_for_configure = false;
163 }
164 }
165
166 static const struct xdg_surface_listener xdg_surface_listener = {
167 xdg_surface_handle_configure,
168 };
169
170 static void
xdg_toplevel_handle_configure(void * data,struct xdg_toplevel * toplevel,int32_t width,int32_t height,struct wl_array * states)171 xdg_toplevel_handle_configure(void *data, struct xdg_toplevel *toplevel,
172 int32_t width, int32_t height,
173 struct wl_array *states)
174 {
175 }
176
177 static void
xdg_toplevel_handle_close(void * data,struct xdg_toplevel * xdg_toplevel)178 xdg_toplevel_handle_close(void *data, struct xdg_toplevel *xdg_toplevel)
179 {
180 running = 0;
181 }
182
183 static const struct xdg_toplevel_listener xdg_toplevel_listener = {
184 xdg_toplevel_handle_configure,
185 xdg_toplevel_handle_close,
186 };
187
188 static float
bounded_randf(float a,float b)189 bounded_randf(float a, float b)
190 {
191 return a + ((float)rand() / (float)RAND_MAX) * (b - a);
192 }
193
194 static void
window_init_game(struct window * window)195 window_init_game(struct window *window)
196 {
197 int ax1, ay1, ax2, ay2; /* playable arena size */
198 struct timeval tv;
199
200 gettimeofday(&tv, NULL);
201 srand(tv.tv_usec);
202
203 window->ball.radius = 10;
204
205 ax1 = window->border + window->ball.radius;
206 ay1 = window->border + window->ball.radius;
207 ax2 = window->width - window->border - window->ball.radius;
208 ay2 = window->height - window->border - window->ball.radius;
209
210 window->ball.x = bounded_randf(ax1, ax2);
211 window->ball.y = bounded_randf(ay1, ay2);
212
213 window->ball.dx = bounded_randf(0, window->width);
214 window->ball.dy = bounded_randf(0, window->height);
215
216 window->ball.prev_time = 0;
217 }
218
219 static void
window_advance_game(struct window * window,uint32_t timestamp)220 window_advance_game(struct window *window, uint32_t timestamp)
221 {
222 int ax1, ay1, ax2, ay2; /* Arena size */
223 float dt;
224
225 if (window->ball.prev_time == 0) {
226 /* first pass, don't do anything */
227 window->ball.prev_time = timestamp;
228 return;
229 }
230
231 /* dt in seconds */
232 dt = (float)(timestamp - window->ball.prev_time) / 1000.0f;
233
234 ax1 = window->border + window->ball.radius;
235 ay1 = window->border + window->ball.radius;
236 ax2 = window->width - window->border - window->ball.radius;
237 ay2 = window->height - window->border - window->ball.radius;
238
239 window->ball.x += window->ball.dx * dt;
240 while (window->ball.x < ax1 || ax2 < window->ball.x) {
241 if (window->ball.x < ax1)
242 window->ball.x = 2 * ax1 - window->ball.x;
243 if (ax2 <= window->ball.x)
244 window->ball.x = 2 * ax2 - window->ball.x;
245
246 window->ball.dx *= -1.0f;
247 }
248
249 window->ball.y += window->ball.dy * dt;
250 while (window->ball.y < ay1 || ay2 < window->ball.y) {
251 if (window->ball.y < ay1)
252 window->ball.y = 2 * ay1 - window->ball.y;
253 if (ay2 <= window->ball.y)
254 window->ball.y = 2 * ay2 - window->ball.y;
255
256 window->ball.dy *= -1.0f;
257 }
258
259 window->ball.prev_time = timestamp;
260 }
261
262 static struct window *
create_window(struct display * display,int width,int height,enum wl_output_transform transform,int scale,enum window_flags flags)263 create_window(struct display *display, int width, int height,
264 enum wl_output_transform transform, int scale,
265 enum window_flags flags)
266 {
267 struct window *window;
268
269 if (display->compositor_version < 2 &&
270 (transform != WL_OUTPUT_TRANSFORM_NORMAL ||
271 flags & WINDOW_FLAG_ROTATING_TRANSFORM)) {
272 fprintf(stderr, "wl_surface.buffer_transform unsupported in "
273 "wl_surface version %d\n",
274 display->compositor_version);
275 exit(1);
276 }
277
278 if (display->compositor_version < 3 &&
279 (! (flags & WINDOW_FLAG_USE_VIEWPORT)) && scale != 1) {
280 fprintf(stderr, "wl_surface.buffer_scale unsupported in "
281 "wl_surface version %d\n",
282 display->compositor_version);
283 exit(1);
284 }
285
286 if (display->viewporter == NULL && (flags & WINDOW_FLAG_USE_VIEWPORT)) {
287 fprintf(stderr, "Compositor does not support wp_viewport");
288 exit(1);
289 }
290
291 if (display->compositor_version <
292 WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION &&
293 (flags & WINDOW_FLAG_USE_DAMAGE_BUFFER)) {
294 fprintf(stderr, "wl_surface.damage_buffer unsupported in "
295 "wl_surface version %d\n",
296 display->compositor_version);
297 exit(1);
298 }
299
300 window = zalloc(sizeof *window);
301 if (!window)
302 return NULL;
303
304 window->callback = NULL;
305 window->display = display;
306 window->width = width;
307 window->height = height;
308 window->border = 10;
309 window->flags = flags;
310 window->transform = transform;
311 window->scale = scale;
312
313 window_init_game(window);
314
315 window->surface = wl_compositor_create_surface(display->compositor);
316
317 if (window->flags & WINDOW_FLAG_USE_VIEWPORT)
318 window->viewport = wp_viewporter_get_viewport(display->viewporter,
319 window->surface);
320
321 if (display->wm_base) {
322 window->xdg_surface =
323 xdg_wm_base_get_xdg_surface(display->wm_base,
324 window->surface);
325
326 assert(window->xdg_surface);
327
328 xdg_surface_add_listener(window->xdg_surface,
329 &xdg_surface_listener, window);
330
331 window->xdg_toplevel =
332 xdg_surface_get_toplevel(window->xdg_surface);
333
334 assert(window->xdg_toplevel);
335
336 xdg_toplevel_add_listener(window->xdg_toplevel,
337 &xdg_toplevel_listener, window);
338
339 xdg_toplevel_set_title(window->xdg_toplevel, "simple-damage");
340
341 window->wait_for_configure = true;
342 wl_surface_commit(window->surface);
343 } else if (display->fshell) {
344 zwp_fullscreen_shell_v1_present_surface(display->fshell,
345 window->surface,
346 ZWP_FULLSCREEN_SHELL_V1_PRESENT_METHOD_DEFAULT,
347 NULL);
348 } else {
349 assert(0);
350 }
351
352 /* Initialise damage to full surface, so the padding gets painted */
353 if (window->flags & WINDOW_FLAG_USE_DAMAGE_BUFFER) {
354 wl_surface_damage_buffer(window->surface, 0, 0,
355 INT32_MAX, INT32_MAX);
356 } else {
357 wl_surface_damage(window->surface, 0, 0, INT32_MAX, INT32_MAX);
358 }
359 return window;
360 }
361
362 static void
destroy_window(struct window * window)363 destroy_window(struct window *window)
364 {
365 if (window->callback)
366 wl_callback_destroy(window->callback);
367
368 if (window->buffers[0].buffer)
369 wl_buffer_destroy(window->buffers[0].buffer);
370 if (window->buffers[1].buffer)
371 wl_buffer_destroy(window->buffers[1].buffer);
372
373 if (window->xdg_toplevel)
374 xdg_toplevel_destroy(window->xdg_toplevel);
375 if (window->xdg_surface)
376 xdg_surface_destroy(window->xdg_surface);
377 if (window->viewport)
378 wp_viewport_destroy(window->viewport);
379 wl_surface_destroy(window->surface);
380 free(window);
381 }
382
383 static struct buffer *
window_next_buffer(struct window * window)384 window_next_buffer(struct window *window)
385 {
386 struct buffer *buffer;
387 int ret = 0, bwidth, bheight;
388
389 if (!window->buffers[0].busy)
390 buffer = &window->buffers[0];
391 else if (!window->buffers[1].busy)
392 buffer = &window->buffers[1];
393 else
394 return NULL;
395
396 switch (window->transform) {
397 default:
398 case WL_OUTPUT_TRANSFORM_NORMAL:
399 case WL_OUTPUT_TRANSFORM_180:
400 case WL_OUTPUT_TRANSFORM_FLIPPED:
401 case WL_OUTPUT_TRANSFORM_FLIPPED_180:
402 bwidth = window->width * window->scale;
403 bheight = window->height * window->scale;
404 break;
405 case WL_OUTPUT_TRANSFORM_90:
406 case WL_OUTPUT_TRANSFORM_270:
407 case WL_OUTPUT_TRANSFORM_FLIPPED_90:
408 case WL_OUTPUT_TRANSFORM_FLIPPED_270:
409 bwidth = window->height * window->scale;
410 bheight = window->width * window->scale;
411 break;
412 }
413
414 if (!buffer->buffer) {
415 ret = create_shm_buffer(window->display, buffer,
416 bwidth, bheight,
417 WL_SHM_FORMAT_ARGB8888);
418
419 if (ret < 0)
420 return NULL;
421 }
422
423 return buffer;
424 }
425
426 static void
paint_box(uint32_t * pixels,int pitch,int x,int y,int width,int height,uint32_t color)427 paint_box(uint32_t *pixels, int pitch, int x, int y, int width, int height,
428 uint32_t color)
429 {
430 int i, j;
431
432 for (j = y; j < y + height; ++j)
433 for (i = x; i < x + width; ++i)
434 pixels[i + j * pitch] = color;
435 }
436
437 static void
paint_circle(uint32_t * pixels,int pitch,float x,float y,int radius,uint32_t color)438 paint_circle(uint32_t *pixels, int pitch, float x, float y, int radius,
439 uint32_t color)
440 {
441 int i, j;
442
443 for (j = y - radius; j <= (int)(y + radius); ++j)
444 for (i = x - radius; i <= (int)(x + radius); ++i)
445 if ((j+0.5f-y)*(j+0.5f-y) + (i+0.5f-x)*(i+0.5f-x) <= radius * radius)
446 pixels[i + j * pitch] = color;
447 }
448
449 static void
window_get_transformed_ball(struct window * window,float * bx,float * by)450 window_get_transformed_ball(struct window *window, float *bx, float *by)
451 {
452 float wx, wy;
453
454 wx = window->ball.x;
455 wy = window->ball.y;
456
457 switch (window->transform) {
458 default:
459 case WL_OUTPUT_TRANSFORM_NORMAL:
460 *bx = wx;
461 *by = wy;
462 break;
463 case WL_OUTPUT_TRANSFORM_90:
464 *bx = window->height - wy;
465 *by = wx;
466 break;
467 case WL_OUTPUT_TRANSFORM_180:
468 *bx = window->width - wx;
469 *by = window->height - wy;
470 break;
471 case WL_OUTPUT_TRANSFORM_270:
472 *bx = wy;
473 *by = window->width - wx;
474 break;
475 case WL_OUTPUT_TRANSFORM_FLIPPED:
476 *bx = window->width - wx;
477 *by = wy;
478 break;
479 case WL_OUTPUT_TRANSFORM_FLIPPED_90:
480 *bx = window->height - wy;
481 *by = window->width - wx;
482 break;
483 case WL_OUTPUT_TRANSFORM_FLIPPED_180:
484 *bx = wx;
485 *by = window->height - wy;
486 break;
487 case WL_OUTPUT_TRANSFORM_FLIPPED_270:
488 *bx = wy;
489 *by = wx;
490 break;
491 }
492
493 *bx *= window->scale;
494 *by *= window->scale;
495
496 if (window->viewport) {
497 /* We're drawing half-size because of the viewport */
498 *bx /= 2;
499 *by /= 2;
500 }
501 }
502
503 static const struct wl_callback_listener frame_listener;
504
505 static void
redraw(void * data,struct wl_callback * callback,uint32_t time)506 redraw(void *data, struct wl_callback *callback, uint32_t time)
507 {
508 struct window *window = data;
509 struct buffer *buffer;
510 int off_x = 0, off_y = 0;
511 int bwidth, bheight, bborder, bpitch, bradius;
512 float bx, by;
513
514 buffer = window_next_buffer(window);
515 if (!buffer) {
516 fprintf(stderr,
517 !callback ? "Failed to create the first buffer.\n" :
518 "Both buffers busy at redraw(). Server bug?\n");
519 abort();
520 }
521
522 /* Rotate the damage, but keep the even/odd parity so the
523 * dimensions of the buffers don't change */
524 if (window->flags & WINDOW_FLAG_ROTATING_TRANSFORM)
525 window->transform = (window->transform + 2) % 8;
526
527 switch (window->transform) {
528 default:
529 case WL_OUTPUT_TRANSFORM_NORMAL:
530 case WL_OUTPUT_TRANSFORM_180:
531 case WL_OUTPUT_TRANSFORM_FLIPPED:
532 case WL_OUTPUT_TRANSFORM_FLIPPED_180:
533 bwidth = window->width * window->scale;
534 bheight = window->height * window->scale;
535 break;
536 case WL_OUTPUT_TRANSFORM_90:
537 case WL_OUTPUT_TRANSFORM_270:
538 case WL_OUTPUT_TRANSFORM_FLIPPED_90:
539 case WL_OUTPUT_TRANSFORM_FLIPPED_270:
540 bwidth = window->height * window->scale;
541 bheight = window->width * window->scale;
542 break;
543 }
544
545 bpitch = bwidth;
546
547 bborder = window->border * window->scale;
548 bradius = window->ball.radius * window->scale;
549
550 if (window->viewport) {
551 int tx, ty;
552 /* Fill the whole thing with red to detect viewport errors */
553 paint_box(buffer->shm_data, bpitch, 0, 0, bwidth, bheight,
554 0xffff0000);
555
556 /* The buffer is the same size. However, we crop it
557 * and scale it up by a factor of 2 */
558 bborder /= 2;
559 bradius /= 2;
560 bwidth /= 2;
561 bheight /= 2;
562
563 /* Offset the drawing region */
564 tx = (window->width / 3) * window->scale;
565 ty = (window->height / 5) * window->scale;
566 switch (window->transform) {
567 default:
568 case WL_OUTPUT_TRANSFORM_NORMAL:
569 off_y = ty;
570 off_x = tx;
571 break;
572 case WL_OUTPUT_TRANSFORM_90:
573 off_y = tx;
574 off_x = bwidth - ty;
575 break;
576 case WL_OUTPUT_TRANSFORM_180:
577 off_y = bheight - ty;
578 off_x = bwidth - tx;
579 break;
580 case WL_OUTPUT_TRANSFORM_270:
581 off_y = bheight - tx;
582 off_x = ty;
583 break;
584 case WL_OUTPUT_TRANSFORM_FLIPPED:
585 off_y = ty;
586 off_x = bwidth - tx;
587 break;
588 case WL_OUTPUT_TRANSFORM_FLIPPED_90:
589 off_y = bheight - tx;
590 off_x = bwidth - ty;
591 break;
592 case WL_OUTPUT_TRANSFORM_FLIPPED_180:
593 off_y = bheight - ty;
594 off_x = tx;
595 break;
596 case WL_OUTPUT_TRANSFORM_FLIPPED_270:
597 off_y = tx;
598 off_x = ty;
599 break;
600 }
601 wp_viewport_set_source(window->viewport,
602 wl_fixed_from_int(window->width / 3),
603 wl_fixed_from_int(window->height / 5),
604 wl_fixed_from_int(window->width / 2),
605 wl_fixed_from_int(window->height / 2));
606 }
607
608 /* Paint the border */
609 paint_box(buffer->shm_data, bpitch, off_x, off_y,
610 bwidth, bborder, 0xffffffff);
611 paint_box(buffer->shm_data, bpitch, off_x, off_y,
612 bborder, bheight, 0xffffffff);
613 paint_box(buffer->shm_data, bpitch, off_x + bwidth - bborder, off_y,
614 bborder, bheight, 0xffffffff);
615 paint_box(buffer->shm_data, bpitch, off_x, off_y + bheight - bborder,
616 bwidth, bborder, 0xffffffff);
617
618 /* fill with translucent */
619 paint_box(buffer->shm_data, bpitch, off_x + bborder, off_y + bborder,
620 bwidth - 2 * bborder, bheight - 2 * bborder, 0x80000000);
621
622 /* Damage where the ball was */
623 if (window->flags & WINDOW_FLAG_USE_DAMAGE_BUFFER) {
624 window_get_transformed_ball(window, &bx, &by);
625 wl_surface_damage_buffer(window->surface,
626 bx - bradius + off_x,
627 by - bradius + off_y,
628 bradius * 2 + 1,
629 bradius * 2 + 1);
630 } else {
631 wl_surface_damage(window->surface,
632 window->ball.x - window->ball.radius,
633 window->ball.y - window->ball.radius,
634 window->ball.radius * 2 + 1,
635 window->ball.radius * 2 + 1);
636 }
637 window_advance_game(window, time);
638
639 window_get_transformed_ball(window, &bx, &by);
640
641 /* Paint the ball */
642 paint_circle(buffer->shm_data, bpitch, off_x + bx, off_y + by,
643 bradius, 0xff00ff00);
644
645 if (print_debug) {
646 printf("Ball now located at (%f, %f)\n",
647 window->ball.x, window->ball.y);
648
649 printf("Circle painted at (%f, %f), radius %d\n", bx, by,
650 bradius);
651
652 printf("Buffer damage rectangle: (%d, %d) @ %dx%d\n",
653 (int)(bx - bradius) + off_x,
654 (int)(by - bradius) + off_y,
655 bradius * 2 + 1, bradius * 2 + 1);
656 }
657
658 /* Damage where the ball is now */
659 if (window->flags & WINDOW_FLAG_USE_DAMAGE_BUFFER) {
660 wl_surface_damage_buffer(window->surface,
661 bx - bradius + off_x,
662 by - bradius + off_y,
663 bradius * 2 + 1,
664 bradius * 2 + 1);
665 } else {
666 wl_surface_damage(window->surface,
667 window->ball.x - window->ball.radius,
668 window->ball.y - window->ball.radius,
669 window->ball.radius * 2 + 1,
670 window->ball.radius * 2 + 1);
671 }
672 wl_surface_attach(window->surface, buffer->buffer, 0, 0);
673
674 if (window->display->compositor_version >= 2 &&
675 (window->transform != WL_OUTPUT_TRANSFORM_NORMAL ||
676 window->flags & WINDOW_FLAG_ROTATING_TRANSFORM))
677 wl_surface_set_buffer_transform(window->surface,
678 window->transform);
679
680 if (window->viewport)
681 wp_viewport_set_destination(window->viewport,
682 window->width,
683 window->height);
684
685 if (window->scale != 1)
686 wl_surface_set_buffer_scale(window->surface,
687 window->scale);
688
689 if (callback)
690 wl_callback_destroy(callback);
691
692 window->callback = wl_surface_frame(window->surface);
693 wl_callback_add_listener(window->callback, &frame_listener, window);
694 wl_surface_commit(window->surface);
695 buffer->busy = 1;
696 }
697
698 static const struct wl_callback_listener frame_listener = {
699 redraw
700 };
701
702 static void
shm_format(void * data,struct wl_shm * wl_shm,uint32_t format)703 shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
704 {
705 struct display *d = data;
706
707 d->formats |= (1 << format);
708 }
709
710 struct wl_shm_listener shm_listener = {
711 shm_format
712 };
713
714 static void
xdg_wm_base_ping(void * data,struct xdg_wm_base * shell,uint32_t serial)715 xdg_wm_base_ping(void *data, struct xdg_wm_base *shell, uint32_t serial)
716 {
717 xdg_wm_base_pong(shell, serial);
718 }
719
720 static const struct xdg_wm_base_listener wm_base_listener = {
721 xdg_wm_base_ping,
722 };
723
724 static void
registry_handle_global(void * data,struct wl_registry * registry,uint32_t id,const char * interface,uint32_t version)725 registry_handle_global(void *data, struct wl_registry *registry,
726 uint32_t id, const char *interface, uint32_t version)
727 {
728 struct display *d = data;
729
730 if (strcmp(interface, "wl_compositor") == 0) {
731 if (d->compositor_version > (int)version) {
732 fprintf(stderr, "Compositor does not support "
733 "wl_surface version %d\n", d->compositor_version);
734 exit(1);
735 }
736
737 if (d->compositor_version < 0)
738 d->compositor_version = version;
739
740 d->compositor =
741 wl_registry_bind(registry,
742 id, &wl_compositor_interface,
743 d->compositor_version);
744 } else if (strcmp(interface, "wp_viewporter") == 0) {
745 d->viewporter = wl_registry_bind(registry, id,
746 &wp_viewporter_interface, 1);
747 } else if (strcmp(interface, "xdg_wm_base") == 0) {
748 d->wm_base = wl_registry_bind(registry,
749 id, &xdg_wm_base_interface, 1);
750 xdg_wm_base_add_listener(d->wm_base, &wm_base_listener, d);
751 } else if (strcmp(interface, "zwp_fullscreen_shell_v1") == 0) {
752 d->fshell = wl_registry_bind(registry,
753 id, &zwp_fullscreen_shell_v1_interface, 1);
754 } else if (strcmp(interface, "wl_shm") == 0) {
755 d->shm = wl_registry_bind(registry,
756 id, &wl_shm_interface, 1);
757 wl_shm_add_listener(d->shm, &shm_listener, d);
758 }
759 }
760
761 static void
registry_handle_global_remove(void * data,struct wl_registry * registry,uint32_t name)762 registry_handle_global_remove(void *data, struct wl_registry *registry,
763 uint32_t name)
764 {
765 }
766
767 static const struct wl_registry_listener registry_listener = {
768 registry_handle_global,
769 registry_handle_global_remove
770 };
771
772 static struct display *
create_display(int version)773 create_display(int version)
774 {
775 struct display *display;
776
777 display = malloc(sizeof *display);
778 if (display == NULL) {
779 fprintf(stderr, "out of memory\n");
780 exit(1);
781 }
782 display->display = wl_display_connect(NULL);
783 assert(display->display);
784
785 display->compositor_version = version;
786 display->formats = 0;
787 display->registry = wl_display_get_registry(display->display);
788 wl_registry_add_listener(display->registry,
789 ®istry_listener, display);
790 wl_display_roundtrip(display->display);
791 if (display->shm == NULL) {
792 fprintf(stderr, "No wl_shm global\n");
793 exit(1);
794 }
795
796 wl_display_roundtrip(display->display);
797
798 if (!(display->formats & (1 << WL_SHM_FORMAT_XRGB8888))) {
799 fprintf(stderr, "WL_SHM_FORMAT_XRGB32 not available\n");
800 exit(1);
801 }
802
803 return display;
804 }
805
806 static void
destroy_display(struct display * display)807 destroy_display(struct display *display)
808 {
809 if (display->shm)
810 wl_shm_destroy(display->shm);
811
812 if (display->wm_base)
813 xdg_wm_base_destroy(display->wm_base);
814
815 if (display->fshell)
816 zwp_fullscreen_shell_v1_release(display->fshell);
817
818 if (display->viewporter)
819 wp_viewporter_destroy(display->viewporter);
820
821 if (display->compositor)
822 wl_compositor_destroy(display->compositor);
823
824 wl_registry_destroy(display->registry);
825 wl_display_flush(display->display);
826 wl_display_disconnect(display->display);
827 free(display);
828 }
829
830 static void
signal_int(int signum)831 signal_int(int signum)
832 {
833 running = 0;
834 }
835
836 static void
print_usage(int retval)837 print_usage(int retval)
838 {
839 printf(
840 "usage: weston-simple-damage [options]\n\n"
841 "options:\n"
842 " -h, --help\t\tPring this help\n"
843 " --verbose\t\tPrint verbose log information\n"
844 " --version=VERSION\tVersion of wl_surface to use\n"
845 " --width=WIDTH\t\tWidth of the window\n"
846 " --height=HEIGHT\tHeight of the window\n"
847 " --scale=SCALE\t\tScale factor for the surface\n"
848 " --transform=TRANSFORM\tTransform for the surface\n"
849 " --rotating-transform\tUse a different buffer_transform for each frame\n"
850 " --use-viewport\tUse wp_viewport\n"
851 " --use-damage-buffer\tUse damage_buffer to post damage\n"
852 );
853
854 exit(retval);
855 }
856
857 static int
parse_transform(const char * str,enum wl_output_transform * transform)858 parse_transform(const char *str, enum wl_output_transform *transform)
859 {
860 int i;
861 static const struct {
862 const char *name;
863 enum wl_output_transform transform;
864 } names[] = {
865 { "normal", WL_OUTPUT_TRANSFORM_NORMAL },
866 { "90", WL_OUTPUT_TRANSFORM_90 },
867 { "180", WL_OUTPUT_TRANSFORM_180 },
868 { "270", WL_OUTPUT_TRANSFORM_270 },
869 { "flipped", WL_OUTPUT_TRANSFORM_FLIPPED },
870 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
871 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
872 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
873 };
874
875 for (i = 0; i < 8; i++) {
876 if (strcmp(names[i].name, str) == 0) {
877 *transform = names[i].transform;
878 return 1;
879 }
880 }
881
882 return 0;
883 }
884
885 int
main(int argc,char ** argv)886 main(int argc, char **argv)
887 {
888 struct sigaction sigint;
889 struct display *display;
890 struct window *window;
891 int i, ret = 0;
892 int version = -1;
893 int width = 300, height = 200, scale = 1;
894 enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL;
895 enum window_flags flags = 0;
896
897 for (i = 1; i < argc; ++i) {
898 if (strcmp(argv[i], "--help") == 0 ||
899 strcmp(argv[i], "-h") == 0) {
900 print_usage(0);
901 } else if (sscanf(argv[i], "--version=%d", &version) > 0) {
902 if (version < 1 || version > 4) {
903 fprintf(stderr, "Unsupported wl_surface version: %d\n",
904 version);
905 return 1;
906 }
907 continue;
908 } else if (strcmp(argv[i], "--verbose") == 0) {
909 print_debug = 1;
910 continue;
911 } else if (sscanf(argv[i], "--width=%d", &width) > 0) {
912 continue;
913 } else if (sscanf(argv[i], "--height=%d", &height) > 0) {
914 continue;
915 } else if (strncmp(argv[i], "--transform=", 12) == 0 &&
916 parse_transform(argv[i] + 12, &transform) > 0) {
917 continue;
918 } else if (strcmp(argv[i], "--rotating-transform") == 0) {
919 flags |= WINDOW_FLAG_ROTATING_TRANSFORM;
920 continue;
921 } else if (sscanf(argv[i], "--scale=%d", &scale) > 0) {
922 continue;
923 } else if (strcmp(argv[i], "--use-viewport") == 0) {
924 flags |= WINDOW_FLAG_USE_VIEWPORT;
925 continue;
926 } else if (strcmp(argv[i], "--use-damage-buffer") == 0) {
927 flags |= WINDOW_FLAG_USE_DAMAGE_BUFFER;
928 continue;
929 } else {
930 printf("Invalid option: %s\n", argv[i]);
931 print_usage(255);
932 }
933 }
934
935 display = create_display(version);
936
937 window = create_window(display, width, height, transform, scale, flags);
938 if (!window)
939 return 1;
940
941 sigint.sa_handler = signal_int;
942 sigemptyset(&sigint.sa_mask);
943 sigint.sa_flags = SA_RESETHAND;
944 sigaction(SIGINT, &sigint, NULL);
945
946 if (!window->wait_for_configure)
947 redraw(window, NULL, 0);
948
949 while (running && ret != -1)
950 ret = wl_display_dispatch(display->display);
951
952 fprintf(stderr, "simple-shm exiting\n");
953 destroy_window(window);
954 destroy_display(display);
955
956 return 0;
957 }
958