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SnapToRegion: Add regions_from_cursor()

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Consolatis 2022-07-06 17:26:22 +02:00
parent 96a591297d
commit 0c31886061
2 changed files with 33 additions and 0 deletions
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1
include/regions.h
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@ -30,6 +30,7 @@ void regions_init(struct server *server, struct seat *seat);
void regions_update(struct output *output); void regions_update(struct output *output);
void regions_destroy(struct wl_list *regions); void regions_destroy(struct wl_list *regions);
struct region *regions_from_cursor(struct server *server);
struct region *regions_from_name(const char *region_name, struct output *output); struct region *regions_from_name(const char *region_name, struct output *output);
#endif /* __LABWC_REGIONS_H */ #endif /* __LABWC_REGIONS_H */

32
src/regions.c
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@ -3,6 +3,7 @@
#define _POSIX_C_SOURCE 200809L #define _POSIX_C_SOURCE 200809L
#include <assert.h> #include <assert.h>
#include <float.h> #include <float.h>
#include <math.h>
#include <string.h> #include <string.h>
#include <wlr/types/wlr_scene.h> #include <wlr/types/wlr_scene.h>
#include <wlr/util/box.h> #include <wlr/util/box.h>
@ -39,6 +40,37 @@ regions_from_name(const char *region_name, struct output *output)
return NULL; return NULL;
} }
struct region *
regions_from_cursor(struct server *server)
{
assert(server);
double lx = server->seat.cursor->x;
double ly = server->seat.cursor->y;
struct wlr_output *wlr_output = wlr_output_layout_output_at(
server->output_layout, lx, ly);
struct output *output = output_from_wlr_output(server, wlr_output);
if (!output) {
return NULL;
}
double dist;
double dist_min = DBL_MAX;
struct region *closest_region = NULL;
struct region *region;
wl_list_for_each(region, &output->regions, link) {
if (wlr_box_contains_point(&region->geo, lx, ly)) {
/* No need for sqrt((x1 - x2)^2 + (y1 - y2)^2) as we just compare */
dist = pow(region->center.x - lx, 2) + pow(region->center.y - ly, 2);
if (dist < dist_min) {
closest_region = region;
dist_min = dist;
}
}
}
return closest_region;
}
void void
regions_update(struct output *output) regions_update(struct output *output)
{ {