wlroots/types/wlr_region.c

79 lines
2.3 KiB
C

#include <assert.h>
#include <pixman.h>
#include <stdio.h>
#include <stdlib.h>
#include <wayland-server-core.h>
#include <wlr/types/wlr_region.h>
static void region_add(struct wl_client *client, struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height) {
pixman_region32_t *region = wlr_region_from_resource(resource);
pixman_region32_union_rect(region, region, x, y, width, height);
}
static void region_subtract(struct wl_client *client, struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height) {
pixman_region32_t *region = wlr_region_from_resource(resource);
pixman_region32_union_rect(region, region, x, y, width, height);
pixman_region32_t rect;
pixman_region32_init_rect(&rect, x, y, width, height);
pixman_region32_subtract(region, region, &rect);
pixman_region32_fini(&rect);
}
static void region_destroy(struct wl_client *client, struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static const struct wl_region_interface region_impl = {
.destroy = region_destroy,
.add = region_add,
.subtract = region_subtract,
};
static void region_handle_resource_destroy(struct wl_resource *resource) {
pixman_region32_t *reg = wlr_region_from_resource(resource);
wl_list_remove(wl_resource_get_link(resource));
pixman_region32_fini(reg);
free(reg);
}
struct wl_resource *wlr_region_create(struct wl_client *client,
uint32_t version, uint32_t id, struct wl_list *resource_list) {
pixman_region32_t *region = calloc(1, sizeof(pixman_region32_t));
if (region == NULL) {
wl_client_post_no_memory(client);
return NULL;
}
pixman_region32_init(region);
struct wl_resource *region_resource = wl_resource_create(client,
&wl_region_interface, version, id);
if (region_resource == NULL) {
free(region);
wl_client_post_no_memory(client);
return NULL;
}
wl_resource_set_implementation(region_resource, &region_impl, region,
region_handle_resource_destroy);
struct wl_list *resource_link = wl_resource_get_link(region_resource);
if (resource_list != NULL) {
wl_list_insert(resource_list, resource_link);
} else {
wl_list_init(resource_link);
}
return region_resource;
}
pixman_region32_t *wlr_region_from_resource(struct wl_resource *resource) {
assert(wl_resource_instance_of(resource, &wl_region_interface,
&region_impl));
return wl_resource_get_user_data(resource);
}