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util/box: introduce wlr_fbox_transform()

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A floating-point version of wlr_box_transform().
This commit is contained in:
Kirill Primak 2021-08-23 23:32:43 +03:00 committed by Simon Ser
parent f2f3df9fb1
commit 664307f968
2 changed files with 53 additions and 0 deletions
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5
include/wlr/util/box.h
View file

@ -78,4 +78,9 @@ bool wlr_box_empty(const struct wlr_box *box);
void wlr_box_transform(struct wlr_box *dest, const struct wlr_box *box,
enum wl_output_transform transform, int width, int height);
/**
* Transforms a floating-point box inside a (0, 0, width, height) box.
*/
void wlr_fbox_transform(struct wlr_fbox *dest, const struct wlr_fbox *box,
enum wl_output_transform transform, double width, double height);
#endif

48
util/box.c
View file

@ -119,3 +119,51 @@ void wlr_box_transform(struct wlr_box *dest, const struct wlr_box *box,
break;
}
}
void wlr_fbox_transform(struct wlr_fbox *dest, const struct wlr_fbox *box,
enum wl_output_transform transform, double width, double height) {
struct wlr_fbox 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;
}
}