2 * Copyright © 2008 Kristian Høgsberg
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. The copyright holders make no representations
11 * about the suitability of this software for any purpose. It is provided "as
12 * is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
35 #include "wayland-client.h"
36 #include "wayland-glib.h"
40 set_random_color(cairo_t *cr)
42 cairo_set_source_rgba(cr,
43 0.5 + (random() % 50) / 49.0,
44 0.5 + (random() % 50) / 49.0,
45 0.5 + (random() % 50) / 49.0,
46 0.5 + (random() % 100) / 99.0);
51 draw_stuff(cairo_surface_t *surface, int width, int height)
53 const int petal_count = 3 + random() % 5;
54 const double r1 = 60 + random() % 35;
55 const double r2 = 20 + random() % 40;
56 const double u = (10 + random() % 90) / 100.0;
57 const double v = (random() % 90) / 100.0;
61 double t, dt = 2 * M_PI / (petal_count * 2);
62 double x1, y1, x2, y2, x3, y3;
64 cr = cairo_create(surface);
65 cairo_translate(cr, width / 2, height / 2);
66 cairo_move_to(cr, cos(0) * r1, sin(0) * r1);
67 for (t = 0, i = 0; i < petal_count; i++, t += dt * 2) {
70 x2 = cos(t + dt) * r2;
71 y2 = sin(t + dt) * r2;
72 x3 = cos(t + 2 * dt) * r1;
73 y3 = sin(t + 2 * dt) * r1;
76 x1 - y1 * u, y1 + x1 * u,
77 x2 + y2 * v, y2 - x2 * v,
81 x2 - y2 * v, y2 + x2 * v,
82 x3 + y3 * u, y3 - x3 * u,
88 cairo_fill_preserve(cr);
96 struct window *window;
97 int x, y, width, height;
102 handle_frame(struct window *window,
103 uint32_t frame, uint32_t timestamp, void *data)
105 struct flower *flower = data;
107 window_move(flower->window,
108 flower->x + cos((flower->offset + timestamp) / 400.0) * 400 - flower->width / 2,
109 flower->y + sin((flower->offset + timestamp) / 320.0) * 300 - flower->height / 2);
110 window_commit(flower->window, 0);
113 int main(int argc, char *argv[])
117 struct flower flower;
120 d = display_create(&argc, &argv, NULL);
126 flower.window = window_create(d, "flower", flower.x, flower.y,
127 flower.width, flower.height);
129 clock_gettime(CLOCK_MONOTONIC, &ts);
131 flower.offset = random();
133 window_set_decoration(flower.window, 0);
134 window_draw(flower.window);
135 s = window_get_surface(flower.window);
136 if (s == NULL || cairo_surface_status (s) != CAIRO_STATUS_SUCCESS) {
137 fprintf(stderr, "failed to create cairo drm surface\n");
141 draw_stuff(s, flower.width, flower.height);
142 cairo_surface_flush(s);
144 window_set_frame_handler(flower.window, handle_frame, &flower);
145 window_commit(flower.window, 0);