mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2025-12-15 08:56:26 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add wayland backend cursor support

Browse source
This commit is contained in:
nyorain 2017-08-14 18:19:42 +02:00 • committed by Drew DeVault
parent 53052b3f6e
commit d7dcbbc175
5 changed files with 268 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

96
backend/wayland/output.c
View file

@ -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) {