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-rw-r--r--backend/meson.build1
-rw-r--r--backend/wayland/os-compatibility.c154
-rw-r--r--backend/wayland/output.c96
-rw-r--r--backend/wayland/wl_seat.c8
-rw-r--r--include/backend/wayland.h10
5 files changed, 268 insertions, 1 deletions
diff --git a/backend/meson.build b/backend/meson.build
index dcf7837a..cea3076c 100644
--- a/backend/meson.build
+++ b/backend/meson.build
@@ -22,6 +22,7 @@ backend_files = files(
'wayland/output.c',
'wayland/registry.c',
'wayland/wl_seat.c',
+ 'wayland/os-compatibility.c',
)
if systemd.found()
diff --git a/backend/wayland/os-compatibility.c b/backend/wayland/os-compatibility.c
new file mode 100644
index 00000000..cd268539
--- /dev/null
+++ b/backend/wayland/os-compatibility.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright © 2012 Collabora, Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#define _XOPEN_SOURCE 700
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/epoll.h>
+#include <string.h>
+#include <stdlib.h>
+
+int
+os_fd_set_cloexec(int fd)
+{
+ long flags;
+
+ if (fd == -1)
+ return -1;
+
+ flags = fcntl(fd, F_GETFD);
+ if (flags == -1)
+ return -1;
+
+ if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
+ return -1;
+
+ return 0;
+}
+
+static int
+set_cloexec_or_close(int fd)
+{
+ if (os_fd_set_cloexec(fd) != 0) {
+ close(fd);
+ return -1;
+ }
+ return fd;
+}
+
+static int
+create_tmpfile_cloexec(char *tmpname)
+{
+ int fd;
+
+#ifdef HAVE_MKOSTEMP
+ fd = mkostemp(tmpname, O_CLOEXEC);
+ if (fd >= 0)
+ unlink(tmpname);
+#else
+ fd = mkstemp(tmpname);
+ if (fd >= 0) {
+ fd = set_cloexec_or_close(fd);
+ unlink(tmpname);
+ }
+#endif
+
+ return fd;
+}
+
+/*
+ * Create a new, unique, anonymous file of the given size, and
+ * return the file descriptor for it. The file descriptor is set
+ * CLOEXEC. The file is immediately suitable for mmap()'ing
+ * the given size at offset zero.
+ *
+ * The file should not have a permanent backing store like a disk,
+ * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
+ *
+ * The file name is deleted from the file system.
+ *
+ * The file is suitable for buffer sharing between processes by
+ * transmitting the file descriptor over Unix sockets using the
+ * SCM_RIGHTS methods.
+ *
+ * If the C library implements posix_fallocate(), it is used to
+ * guarantee that disk space is available for the file at the
+ * given size. If disk space is insufficient, errno is set to ENOSPC.
+ * If posix_fallocate() is not supported, program may receive
+ * SIGBUS on accessing mmap()'ed file contents instead.
+ */
+int
+os_create_anonymous_file(off_t size)
+{
+ static const char template[] = "/wlroots-shared-XXXXXX";
+ const char *path;
+ char *name;
+ int fd;
+ int ret;
+
+ path = getenv("XDG_RUNTIME_DIR");
+ if (!path) {
+ errno = ENOENT;
+ return -1;
+ }
+
+ name = malloc(strlen(path) + sizeof(template));
+ if (!name)
+ return -1;
+
+ strcpy(name, path);
+ strcat(name, template);
+
+ fd = create_tmpfile_cloexec(name);
+
+ free(name);
+
+ if (fd < 0)
+ return -1;
+
+#ifdef HAVE_POSIX_FALLOCATE
+ do {
+ ret = posix_fallocate(fd, 0, size);
+ } while (ret == EINTR);
+ if (ret != 0) {
+ close(fd);
+ errno = ret;
+ return -1;
+ }
+#else
+ do {
+ ret = ftruncate(fd, size);
+ } while (ret < 0 && errno == EINTR);
+ if (ret < 0) {
+ close(fd);
+ return -1;
+ }
+#endif
+
+ return fd;
+}
diff --git a/backend/wayland/output.c b/backend/wayland/output.c
index c0e93c41..cb286316 100644
--- a/backend/wayland/output.c
+++ b/backend/wayland/output.c
@@ -3,12 +3,17 @@
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/mman.h>
#include <wayland-client.h>
#include <GLES3/gl3.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/util/log.h>
#include "backend/wayland.h"
+int os_create_anonymous_file(off_t size);
+
static struct wl_callback_listener frame_listener;
static void surface_frame_callback(void *data, struct wl_callback *cb, uint32_t time) {
@@ -46,9 +51,86 @@ static void wlr_wl_output_transform(struct wlr_output *_output,
output->wlr_output.transform = transform;
}
+static bool wlr_wl_output_set_cursor(struct wlr_output *_output,
+ const uint8_t *buf, int32_t stride, uint32_t width, uint32_t height) {
+
+ struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
+ struct wlr_wl_backend *backend = output->backend;
+ stride *= 4; // stride is given in pixels, we need it in bytes
+
+ if (!backend->shm || !backend->pointer) {
+ wlr_log(L_INFO, "cannot set cursor, no shm or pointer");
+ return false;
+ }
+
+ if (!output->cursor_surface) {
+ output->cursor_surface = wl_compositor_create_surface(output->backend->compositor);
+ }
+
+ uint32_t size = stride * height;
+ if (output->cursor_buf_size != size) {
+ if (output->cursor_buffer) {
+ wl_buffer_destroy(output->cursor_buffer);
+ }
+
+ if (size > output->cursor_buf_size) {
+ if (output->cursor_pool) {
+ wl_shm_pool_destroy(output->cursor_pool);
+ output->cursor_pool = NULL;
+ munmap(output->cursor_data, output->cursor_buf_size);
+ }
+ }
+
+ if (!output->cursor_pool) {
+ int fd = os_create_anonymous_file(size);
+ if (fd < 0) {
+ wlr_log_errno(L_INFO, "creating anonymous file for cursor buffer failed");
+ return false;
+ }
+
+ output->cursor_data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (output->cursor_data == MAP_FAILED) {
+ close(fd);
+ wlr_log_errno(L_INFO, "mmap failed");
+ return false;
+ }
+
+ output->cursor_pool = wl_shm_create_pool(backend->shm, fd, size);
+ close(fd);
+ }
+
+ output->cursor_buffer = wl_shm_pool_create_buffer(output->cursor_pool,
+ 0, width, height, stride, WL_SHM_FORMAT_ARGB8888);
+ output->cursor_buf_size = size;
+ }
+
+ memcpy(output->cursor_data, buf, size);
+ wl_surface_attach(output->cursor_surface, output->cursor_buffer, 0, 0);
+ wl_surface_damage(output->cursor_surface, 0, 0, width, height);
+ wl_surface_commit(output->cursor_surface);
+
+ wlr_wl_output_update_cursor(output, output->enter_serial);
+ return true;
+}
+
static void wlr_wl_output_destroy(struct wlr_output *_output) {
struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
wl_signal_emit(&output->backend->backend.events.output_remove, &output->wlr_output);
+
+ if (output->cursor_buf_size != 0) {
+ assert(output->cursor_data);
+ assert(output->cursor_buffer);
+ assert(output->cursor_pool);
+
+ wl_buffer_destroy(output->cursor_buffer);
+ munmap(output->cursor_data, output->cursor_buf_size);
+ wl_shm_pool_destroy(output->cursor_pool);
+ }
+
+ if (output->cursor_surface) {
+ wl_surface_destroy(output->cursor_surface);
+ }
+
if (output->frame_callback) {
wl_callback_destroy(output->frame_callback);
}
@@ -59,11 +141,25 @@ static void wlr_wl_output_destroy(struct wlr_output *_output) {
free(output);
}
+void wlr_wl_output_update_cursor(struct wlr_wl_backend_output *output, uint32_t serial) {
+ if (output->cursor_surface && output->backend->pointer && serial) {
+ wl_pointer_set_cursor(output->backend->pointer, serial,
+ output->cursor_surface, 0, 0);
+ }
+}
+
+bool wlr_wl_output_move_cursor(struct wlr_output *_output, int x, int y) {
+ // TODO: only return true if x == current x and y == current y
+ return true;
+}
+
static struct wlr_output_impl output_impl = {
.transform = wlr_wl_output_transform,
.destroy = wlr_wl_output_destroy,
.make_current = wlr_wl_output_make_current,
.swap_buffers = wlr_wl_output_swap_buffers,
+ .set_cursor = wlr_wl_output_set_cursor,
+ .move_cursor = wlr_wl_output_move_cursor
};
void handle_ping(void *data, struct wl_shell_surface *ssurface, uint32_t serial) {
diff --git a/backend/wayland/wl_seat.c b/backend/wayland/wl_seat.c
index 0ea1fd26..31a3560a 100644
--- a/backend/wayland/wl_seat.c
+++ b/backend/wayland/wl_seat.c
@@ -23,6 +23,8 @@ static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer,
wlr_wl_output_for_surface(wlr_wl_dev->backend, surface);
assert(output);
wlr_wl_pointer->current_output = output;
+ wlr_wl_pointer->current_output->enter_serial = serial;
+ wlr_wl_output_update_cursor(wlr_wl_pointer->current_output, serial);
}
static void pointer_handle_leave(void *data, struct wl_pointer *wl_pointer,
@@ -30,7 +32,10 @@ static void pointer_handle_leave(void *data, struct wl_pointer *wl_pointer,
struct wlr_input_device *dev = data;
assert(dev && dev->pointer);
struct wlr_wl_pointer *wlr_wl_pointer = (struct wlr_wl_pointer *)dev->pointer;
- wlr_wl_pointer->current_output = NULL;
+ if (wlr_wl_pointer->current_output) {
+ wlr_wl_pointer->current_output->enter_serial = 0;
+ wlr_wl_pointer->current_output = NULL;
+ }
}
static void pointer_handle_motion(void *data, struct wl_pointer *wl_pointer,
@@ -227,6 +232,7 @@ static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
wlr_pointer_init(wlr_device->pointer, NULL);
wlr_wl_device->resource = wl_pointer;
wl_signal_emit(&backend->backend.events.input_add, wlr_device);
+ backend->pointer = wl_pointer;
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD)) {
wlr_log(L_DEBUG, "seat %p offered keyboard", (void*) wl_seat);
diff --git a/include/backend/wayland.h b/include/backend/wayland.h
index d930f21b..92ae63ba 100644
--- a/include/backend/wayland.h
+++ b/include/backend/wayland.h
@@ -27,6 +27,7 @@ struct wlr_wl_backend {
struct wl_shell *shell;
struct wl_shm *shm;
struct wl_seat *seat;
+ struct wl_pointer *pointer;
char *seat_name;
};
@@ -38,6 +39,14 @@ struct wlr_wl_backend_output {
struct wl_shell_surface *shell_surface;
struct wl_egl_window *egl_window;
struct wl_callback *frame_callback;
+
+ struct wl_shm_pool *cursor_pool;
+ void *cursor_buffer; // actually a (client-side) struct wl_buffer*
+ uint8_t *cursor_data;
+ struct wl_surface *cursor_surface;
+ uint32_t cursor_buf_size;
+ uint32_t enter_serial;
+
void *egl_surface;
};
@@ -55,6 +64,7 @@ struct wlr_wl_pointer {
};
void wlr_wl_registry_poll(struct wlr_wl_backend *backend);
+void wlr_wl_output_update_cursor(struct wlr_wl_backend_output *output, uint32_t serial);
struct wlr_wl_backend_output *wlr_wl_output_for_surface(
struct wlr_wl_backend *backend, struct wl_surface *surface);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 07:06:27 +0000