init
This commit is contained in:
commit
02453ade24
25
Makefile
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25
Makefile
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@ -0,0 +1,25 @@
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WAYLAND_FLAGS = $(shell pkg-config wayland-client --cflags --libs)
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WAYLAND_PROTOCOLS_DIR = $(shell pkg-config wayland-protocols --variable=pkgdatadir)
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WAYLAND_SCANNER = $(shell pkg-config --variable=wayland_scanner wayland-scanner)
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CFLAGS ?= -std=c11 -Wall -Wextra -Werror -Wno-unused-parameter -ggdb
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XDG_SHELL_PROTOCOL = $(WAYLAND_PROTOCOLS_DIR)/stable/xdg-shell/xdg-shell.xml
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HEADERS=xdg-shell-client-protocol.h
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SOURCES=surface.c xdg-shell-protocol.c
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all: surface
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surface: $(HEADERS) $(SOURCES)
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$(CC) $(CFLAGS) -o $@ $(SOURCES) -lrt $(WAYLAND_FLAGS)
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xdg-shell-client-protocol.h:
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$(WAYLAND_SCANNER) client-header $(XDG_SHELL_PROTOCOL) xdg-shell-client-protocol.h
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xdg-shell-protocol.c:
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$(WAYLAND_SCANNER) private-code $(XDG_SHELL_PROTOCOL) xdg-shell-protocol.c
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.PHONY: clean
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clean:
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$(RM) surface xdg-shell-protocol.c xdg-shell-client-protocol.h
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296
surface.c
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296
surface.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wayland-client.h>
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//#include <wayland-server.h>
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#include <wayland-client-protocol.h>
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#include "xdg-shell-client-protocol.h"
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <unistd.h>
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struct wl_display *display = NULL;
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struct wl_compositor *compositor = NULL;
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struct wl_surface *surface;
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struct wl_shell *shell;
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struct wl_shell_surface *shell_surface;
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struct wl_shm *shm;
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struct wl_buffer *buffer;
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void *shm_data;
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int WIDTH = 480;
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int HEIGHT = 360;
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static void
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handle_ping(void *data, struct wl_shell_surface *shell_surface,
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uint32_t serial)
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{
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wl_shell_surface_pong(shell_surface, serial);
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fprintf(stderr, "Pinged and ponged\n");
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}
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static void
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handle_configure(void *data, struct wl_shell_surface *shell_surface,
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uint32_t edges, int32_t width, int32_t height)
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{
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}
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static void
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handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
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{
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}
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static const struct wl_shell_surface_listener shell_surface_listener = {
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handle_ping,
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handle_configure,
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handle_popup_done
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};
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static int
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set_cloexec_or_close(int fd)
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{
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long flags;
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if (fd == -1)
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return -1;
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flags = fcntl(fd, F_GETFD);
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if (flags == -1)
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goto err;
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if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
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goto err;
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return fd;
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err:
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close(fd);
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return -1;
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}
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static int
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create_tmpfile_cloexec(char *tmpname)
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{
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int fd;
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#ifdef HAVE_MKOSTEMP
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fd = mkostemp(tmpname, O_CLOEXEC);
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if (fd >= 0)
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unlink(tmpname);
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#else
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fd = mkstemp(tmpname);
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if (fd >= 0) {
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fd = set_cloexec_or_close(fd);
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unlink(tmpname);
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}
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#endif
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return fd;
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}
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/*
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* Create a new, unique, anonymous file of the given size, and
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* return the file descriptor for it. The file descriptor is set
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* CLOEXEC. The file is immediately suitable for mmap()'ing
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* the given size at offset zero.
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*
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* The file should not have a permanent backing store like a disk,
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* but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
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*
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* The file name is deleted from the file system.
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*
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* The file is suitable for buffer sharing between processes by
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* transmitting the file descriptor over Unix sockets using the
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* SCM_RIGHTS methods.
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*/
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int
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os_create_anonymous_file(off_t size)
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{
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static const char template[] = "/weston-shared-XXXXXX";
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const char *path;
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char *name;
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int fd;
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path = getenv("XDG_RUNTIME_DIR");
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if (!path) {
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errno = ENOENT;
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return -1;
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}
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name = malloc(strlen(path) + sizeof(template));
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if (!name)
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return -1;
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strcpy(name, path);
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strcat(name, template);
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fd = create_tmpfile_cloexec(name);
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free(name);
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if (fd < 0)
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return -1;
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if (ftruncate(fd, size) < 0) {
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close(fd);
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return -1;
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}
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return fd;
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}
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static void
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paint_pixels() {
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int n;
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uint32_t *pixel = shm_data;
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fprintf(stderr, "Painting pixels\n");
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for (n =0; n < WIDTH*HEIGHT; n++) {
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*pixel++ = 0xffff;
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}
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}
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static struct wl_buffer *
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create_buffer() {
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struct wl_shm_pool *pool;
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int stride = WIDTH * 4; // 4 bytes per pixel
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int size = stride * HEIGHT;
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int fd;
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struct wl_buffer *buff;
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fd = os_create_anonymous_file(size);
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if (fd < 0) {
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fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
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size);
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exit(1);
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}
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shm_data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (shm_data == MAP_FAILED) {
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fprintf(stderr, "mmap failed: %m\n");
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close(fd);
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exit(1);
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}
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pool = wl_shm_create_pool(shm, fd, size);
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buff = wl_shm_pool_create_buffer(pool, 0,
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WIDTH, HEIGHT,
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stride,
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WL_SHM_FORMAT_XRGB8888);
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//wl_buffer_add_listener(buffer, &buffer_listener, buffer);
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wl_shm_pool_destroy(pool);
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return buff;
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}
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static void
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create_window() {
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buffer = create_buffer();
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wl_surface_attach(surface, buffer, 0, 0);
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//wl_surface_damage(surface, 0, 0, WIDTH, HEIGHT);
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wl_surface_commit(surface);
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}
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static void
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shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
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{
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//struct display *d = data;
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// d->formats |= (1 << format);
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fprintf(stderr, "Format %d\n", format);
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}
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struct wl_shm_listener shm_listener = {
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shm_format
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};
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static void
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global_registry_handler(void *data, struct wl_registry *registry, uint32_t id,
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const char *interface, uint32_t version)
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{
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if (strcmp(interface, "wl_compositor") == 0) {
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compositor = wl_registry_bind(registry,
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id,
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&wl_compositor_interface,
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1);
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} else if (strcmp(interface, "wl_shell") == 0) {
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shell = wl_registry_bind(registry, id,
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&wl_shell_interface, 1);
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} else if (strcmp(interface, "wl_shm") == 0) {
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shm = wl_registry_bind(registry, id,
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&wl_shm_interface, 1);
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wl_shm_add_listener(shm, &shm_listener, NULL);
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}
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}
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static void
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global_registry_remover(void *data, struct wl_registry *registry, uint32_t id)
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{
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printf("Got a registry losing event for %d\n", id);
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}
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static const struct wl_registry_listener registry_listener = {
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global_registry_handler,
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global_registry_remover
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};
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int main(int argc, char **argv) {
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display = wl_display_connect(NULL);
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if (display == NULL) {
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fprintf(stderr, "Can't connect to display\n");
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exit(1);
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}
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printf("connected to display\n");
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struct wl_registry *registry = wl_display_get_registry(display);
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wl_registry_add_listener(registry, ®istry_listener, NULL);
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wl_display_dispatch(display);
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wl_display_roundtrip(display);
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if (compositor == NULL) {
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fprintf(stderr, "Can't find compositor\n");
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exit(1);
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} else {
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fprintf(stderr, "Found compositor\n");
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}
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surface = wl_compositor_create_surface(compositor);
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if (surface == NULL) {
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fprintf(stderr, "Can't create surface\n");
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exit(1);
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} else {
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fprintf(stderr, "Created surface\n");
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}
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shell_surface = wl_shell_get_shell_surface(shell, surface);
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if (shell_surface == NULL) {
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fprintf(stderr, "Can't create shell surface\n");
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exit(1);
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} else {
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fprintf(stderr, "Created shell surface\n");
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}
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wl_shell_surface_set_toplevel(shell_surface);
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wl_shell_surface_add_listener(shell_surface,
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&shell_surface_listener, NULL);
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create_window();
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paint_pixels();
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while (wl_display_dispatch(display) != -1) {
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;
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}
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wl_display_disconnect(display);
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printf("disconnected from display\n");
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exit(0);
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}
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