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impl resizing in wayland

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This commit is contained in:
IoIxD
2025-12-17 19:41:05 -07:00
parent 320de34ce8
commit 724b008220
2 changed files with 44 additions and 28 deletions
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1
include/Mw/LowLevel/Wayland.h
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@@ -104,6 +104,7 @@ struct _MwLLWayland {
void* mapped_shm_buf;
MwU64 mapped_shm_buf_size;
int shm_fd;
MwBool shm_setup;
cairo_surface_t* cs;
cairo_t* cairo;

71
src/backend/wayland.c
View File

@@ -17,6 +17,11 @@
#include <linux/input-event-codes.h>
#endif
/* Setup the wl_shm buffer with the saved width/height */
static void buffer_setup(struct _MwLLWayland* wayland);
/* Destroy the wl_shm buffer */
static void buffer_destroy(struct _MwLLWayland* handle);
/* Get the registered interface from r, or NULL if it doesn't currently have it. */
#define WAYLAND_GET_INTERFACE(handle, inter) shget(handle.wl_protocol_map, inter##_interface.name)
@@ -392,10 +397,8 @@ static void xdg_toplevel_configure(void* data,
self->wayland.wh = height;
xdg_surface_set_window_geometry(self->wayland.toplevel->xdg_surface, 0, 0, self->wayland.ww, self->wayland.wh);
cairo_destroy(self->wayland.cairo);
cairo_surface_destroy(self->wayland.cs);
self->wayland.cs = cairo_image_surface_create_for_data(self->wayland.mapped_shm_buf, CAIRO_FORMAT_ARGB32, width, height, 4 * width);
self->wayland.cairo = cairo_create(self->wayland.cs);
buffer_destroy(&self->wayland);
buffer_setup(&self->wayland);
MwLLDispatch(self, resize, NULL);
MwLLDispatch(self, draw, NULL);
@@ -439,14 +442,28 @@ static void xdg_surface_configure(
/* wl_shm setup function */
static wayland_protocol_t* wl_shm_setup(MwU32 name, struct _MwLLWayland* wayland) {
wayland->shm = wl_registry_bind(wayland->registry, name, &wl_shm_interface, 1);
return NULL;
}
static void update_buffer(MwLL handle) {
fsync(handle->wayland.shm_fd);
if(handle->wayland.configured) {
wl_surface_attach(handle->wayland.surface, handle->wayland.shm_buffer, 0, 0);
wl_surface_commit(handle->wayland.surface);
}
}
static void buffer_setup(struct _MwLLWayland* wayland) {
int x, y;
int stride = wayland->ww * 4;
char temp_name[] = "/tmp/milsko-wl-shm-XXXXXX";
wayland->mapped_shm_buf_size = wayland->ww * wayland->wh * 4;
wayland->shm = wl_registry_bind(wayland->registry, name, &wl_shm_interface, 1);
wayland->shm_fd = mkstemp(temp_name);
unlink(temp_name);
@@ -454,12 +471,12 @@ static wayland_protocol_t* wl_shm_setup(MwU32 name, struct _MwLLWayland* wayland
if(posix_fallocate(wayland->shm_fd, 0, wayland->mapped_shm_buf_size) != 0) {
printf("failure setting up wl_shm: could not fallocate. %s.\n", strerror(errno));
close(wayland->shm_fd);
return NULL;
return;
}
if(ftruncate(wayland->shm_fd, wayland->mapped_shm_buf_size) != 0) {
printf("failure setting up wl_shm: could not truncate. %s.\n", strerror(errno));
close(wayland->shm_fd);
return NULL;
return;
}
wayland->mapped_shm_buf = mmap(NULL, wayland->mapped_shm_buf_size, PROT_WRITE, MAP_SHARED, wayland->shm_fd, 0);
@@ -477,16 +494,25 @@ static wayland_protocol_t* wl_shm_setup(MwU32 name, struct _MwLLWayland* wayland
wl_surface_commit(wayland->surface);
}
return NULL;
wayland->cs = cairo_image_surface_create_for_data(wayland->mapped_shm_buf, CAIRO_FORMAT_ARGB32, wayland->ww, wayland->wh, 4 * wayland->ww);
wayland->cairo = cairo_create(wayland->cs);
memset(wayland->mapped_shm_buf, 255, wayland->mapped_shm_buf_size);
update_buffer((MwLL)wayland);
wayland->shm_setup = MwTRUE;
}
static void update_buffer(MwLL handle) {
fsync(handle->wayland.shm_fd);
if(handle->wayland.configured) {
wl_surface_attach(handle->wayland.surface, handle->wayland.shm_buffer, 0, 0);
wl_surface_commit(handle->wayland.surface);
static void buffer_destroy(struct _MwLLWayland* wayland) {
if(!wayland->shm_setup) {
return;
}
cairo_destroy(wayland->cairo);
cairo_surface_destroy(wayland->cs);
wl_buffer_destroy(wayland->shm_buffer);
// munmap(wayland->mapped_shm_buf, wayland->mapped_shm_buf_size);
wl_shm_pool_destroy(wayland->shm_pool);
close(wayland->shm_fd);
}
/* Standard Wayland event loop. */
@@ -704,12 +730,7 @@ static MwLL MwLLCreateImpl(MwLL parent, int x, int y, int width, int height) {
setup_sublevel(parent, r, x, y);
}
/* example of writing to the buffer */
memset(r->wayland.mapped_shm_buf, 255, r->wayland.mapped_shm_buf_size);
update_buffer(r);
r->wayland.cs = cairo_image_surface_create_for_data(r->wayland.mapped_shm_buf, CAIRO_FORMAT_ARGB32, width, height, 4 * width);
r->wayland.cairo = cairo_create(r->wayland.cs);
buffer_setup(&r->wayland);
MwLLForceRender(r);
@@ -719,13 +740,7 @@ static MwLL MwLLCreateImpl(MwLL parent, int x, int y, int width, int height) {
static void MwLLDestroyImpl(MwLL handle) {
MwLLDestroyCommon(handle);
cairo_destroy(handle->wayland.cairo);
cairo_surface_destroy(handle->wayland.cs);
munmap(handle->wayland.mapped_shm_buf, handle->wayland.mapped_shm_buf_size);
wl_buffer_destroy(handle->wayland.mapped_shm_buf);
wl_shm_pool_destroy(handle->wayland.shm_pool);
close(handle->wayland.shm_fd);
buffer_destroy(&handle->wayland);
free(handle);
}