diff options
Diffstat (limited to 'clients/flower.c')
| -rw-r--r-- | clients/flower.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/clients/flower.c b/clients/flower.c new file mode 100644 index 00000000..adbb0cb7 --- /dev/null +++ b/clients/flower.c @@ -0,0 +1,195 @@ +/* + * Copyright © 2008 Kristian Høgsberg + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <fcntl.h> +#include <unistd.h> +#include <math.h> +#include <time.h> +#include <cairo.h> +#include <glib.h> +#include <cairo-drm.h> + +#include "wayland-client.h" +#include "wayland-glib.h" + +static const char gem_device[] = "/dev/dri/card0"; +static const char socket_name[] = "\0wayland"; + +static void +set_random_color(cairo_t *cr) +{ + cairo_set_source_rgba(cr, + 0.5 + (random() % 50) / 49.0, + 0.5 + (random() % 50) / 49.0, + 0.5 + (random() % 50) / 49.0, + 0.5 + (random() % 100) / 99.0); +} + + +static void +draw_stuff(cairo_surface_t *surface, int width, int height) +{ + const int petal_count = 3 + random() % 5; + const double r1 = 60 + random() % 35; + const double r2 = 20 + random() % 40; + const double u = (10 + random() % 90) / 100.0; + const double v = (random() % 90) / 100.0; + + cairo_t *cr; + int i; + double t, dt = 2 * M_PI / (petal_count * 2); + double x1, y1, x2, y2, x3, y3; + + cr = cairo_create(surface); + cairo_translate(cr, width / 2, height / 2); + cairo_move_to(cr, cos(0) * r1, sin(0) * r1); + for (t = 0, i = 0; i < petal_count; i++, t += dt * 2) { + x1 = cos(t) * r1; + y1 = sin(t) * r1; + x2 = cos(t + dt) * r2; + y2 = sin(t + dt) * r2; + x3 = cos(t + 2 * dt) * r1; + y3 = sin(t + 2 * dt) * r1; + + cairo_curve_to(cr, + x1 - y1 * u, y1 + x1 * u, + x2 + y2 * v, y2 - x2 * v, + x2, y2); + + cairo_curve_to(cr, + x2 - y2 * v, y2 + x2 * v, + x3 + y3 * u, y3 - x3 * u, + x3, y3); + } + + cairo_close_path(cr); + set_random_color(cr); + cairo_fill_preserve(cr); + set_random_color(cr); + cairo_stroke(cr); + + cairo_destroy(cr); +} + +struct flower { + struct wl_compositor *compositor; + struct wl_surface *surface; + int x, y, width, height; + int offset; +}; + +static void +handle_acknowledge(void *data, + struct wl_compositor *compositor, + uint32_t key, uint32_t frame) +{ +} + +static void +handle_frame(void *data, + struct wl_compositor *compositor, + uint32_t frame, uint32_t timestamp) +{ + struct flower *flower = data; + + wl_surface_map(flower->surface, + flower->x + cos((flower->offset + timestamp) / 400.0) * 400 - flower->width / 2, + flower->y + sin((flower->offset + timestamp) / 320.0) * 300 - flower->height / 2, + flower->width, flower->height); + wl_compositor_commit(flower->compositor, 0); +} + +static const struct wl_compositor_listener compositor_listener = { + handle_acknowledge, + handle_frame, +}; + +int main(int argc, char *argv[]) +{ + struct wl_display *display; + struct wl_visual *visual; + int fd; + cairo_device_t *device; + cairo_surface_t *s; + struct timespec ts; + GMainLoop *loop; + GSource *source; + struct flower flower; + + fd = open(gem_device, O_RDWR); + if (fd < 0) { + fprintf(stderr, "drm open failed: %m\n"); + return -1; + } + + loop = g_main_loop_new(NULL, FALSE); + + display = wl_display_create(socket_name, sizeof socket_name); + if (display == NULL) { + fprintf(stderr, "failed to create display: %m\n"); + return -1; + } + + source = wl_glib_source_new(display); + g_source_attach(source, NULL); + + /* Process connection events. */ + wl_display_iterate(display, WL_DISPLAY_READABLE); + + flower.compositor = wl_display_get_compositor(display); + flower.x = 512; + flower.y = 384; + flower.width = 200; + flower.height = 200; + flower.surface = wl_compositor_create_surface(flower.compositor); + + clock_gettime(CLOCK_MONOTONIC, &ts); + srandom(ts.tv_nsec); + flower.offset = random(); + + device = cairo_drm_device_get_for_fd(fd); + s = cairo_drm_surface_create(device, + CAIRO_CONTENT_COLOR_ALPHA, + flower.width, flower.height); + draw_stuff(s, flower.width, flower.height); + + visual = wl_display_get_premultiplied_argb_visual(display); + wl_surface_attach(flower.surface, + cairo_drm_surface_get_name(s), + flower.width, flower.height, + cairo_drm_surface_get_stride(s), + visual); + + wl_compositor_add_listener(flower.compositor, + &compositor_listener, &flower); + + wl_compositor_commit(flower.compositor, 0); + + g_main_loop_run(loop); + + return 0; +} |