diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/box.c | 121 | ||||
| -rw-r--r-- | util/meson.build | 1 | ||||
| -rw-r--r-- | util/region.c | 1 |
3 files changed, 122 insertions, 1 deletions
diff --git a/util/box.c b/util/box.c new file mode 100644 index 00000000..b382716b --- /dev/null +++ b/util/box.c @@ -0,0 +1,121 @@ +#include <limits.h> +#include <math.h> +#include <stdbool.h> +#include <stdlib.h> +#include <wlr/util/box.h> +#include <wlr/util/log.h> + +void wlr_box_closest_point(const struct wlr_box *box, double x, double y, + double *dest_x, double *dest_y) { + // if box is empty, then it contains no points, so no closest point either + if (box->width <= 0 || box->height <= 0) { + *dest_x = NAN; + *dest_y = NAN; + return; + } + + // find the closest x point + if (x < box->x) { + *dest_x = box->x; + } else if (x >= box->x + box->width) { + *dest_x = box->x + box->width - 1; + } else { + *dest_x = x; + } + + // find closest y point + if (y < box->y) { + *dest_y = box->y; + } else if (y >= box->y + box->height) { + *dest_y = box->y + box->height - 1; + } else { + *dest_y = y; + } +} + +bool wlr_box_empty(const struct wlr_box *box) { + return box == NULL || box->width <= 0 || box->height <= 0; +} + +bool wlr_box_intersection(struct wlr_box *dest, const struct wlr_box *box_a, + const struct wlr_box *box_b) { + bool a_empty = wlr_box_empty(box_a); + bool b_empty = wlr_box_empty(box_b); + + if (a_empty || b_empty) { + dest->x = 0; + dest->y = 0; + dest->width = -100; + dest->height = -100; + return false; + } + + int x1 = fmax(box_a->x, box_b->x); + int y1 = fmax(box_a->y, box_b->y); + int x2 = fmin(box_a->x + box_a->width, box_b->x + box_b->width); + int y2 = fmin(box_a->y + box_a->height, box_b->y + box_b->height); + + dest->x = x1; + dest->y = y1; + dest->width = x2 - x1; + dest->height = y2 - y1; + + return !wlr_box_empty(dest); +} + +bool wlr_box_contains_point(const struct wlr_box *box, double x, double y) { + if (wlr_box_empty(box)) { + return false; + } else { + return x >= box->x && x < box->x + box->width && + y >= box->y && y < box->y + box->height; + } +} + +void wlr_box_transform(struct wlr_box *dest, const struct wlr_box *box, + enum wl_output_transform transform, int width, int height) { + struct wlr_box src = *box; + + if (transform % 2 == 0) { + dest->width = src.width; + dest->height = src.height; + } else { + dest->width = src.height; + dest->height = src.width; + } + + switch (transform) { + case WL_OUTPUT_TRANSFORM_NORMAL: + dest->x = src.x; + dest->y = src.y; + break; + case WL_OUTPUT_TRANSFORM_90: + dest->x = height - src.y - src.height; + dest->y = src.x; + break; + case WL_OUTPUT_TRANSFORM_180: + dest->x = width - src.x - src.width; + dest->y = height - src.y - src.height; + break; + case WL_OUTPUT_TRANSFORM_270: + dest->x = src.y; + dest->y = width - src.x - src.width; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED: + dest->x = width - src.x - src.width; + dest->y = src.y; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + dest->x = src.y; + dest->y = src.x; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_180: + dest->x = src.x; + dest->y = height - src.y - src.height; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + dest->x = height - src.y - src.height; + dest->y = width - src.x - src.width; + break; + } +} diff --git a/util/meson.build b/util/meson.build index 5e31cbbe..c2b46749 100644 --- a/util/meson.build +++ b/util/meson.build @@ -1,5 +1,6 @@ wlr_files += files( 'array.c', + 'box.c', 'global.c', 'log.c', 'region.c', diff --git a/util/region.c b/util/region.c index f39f0469..817d7b1a 100644 --- a/util/region.c +++ b/util/region.c @@ -2,7 +2,6 @@ #include <math.h> #include <limits.h> #include <stdlib.h> -#include <wlr/types/wlr_box.h> #include <wlr/util/region.h> void wlr_region_scale(pixman_region32_t *dst, pixman_region32_t *src, |