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util/region: add fractional region helpers

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Signed-off-by: Loukas Agorgianitis <loukas@agorgianitis.com>
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Loukas Agorgianitis 2025-04-28 17:49:36 +03:00
parent f6ee38c67e
commit 2ab8f41750
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2 changed files with 73 additions and 0 deletions
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25
include/wlr/util/region.h
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@ -44,6 +44,31 @@ void wlr_region_scale(pixman_region32_t *dst, const pixman_region32_t *src,
void wlr_region_scale_xy(pixman_region32_t *dst, const pixman_region32_t *src,
float scale_x, float scale_y);
/**
* Scale a fractional region by the specified factor.
*
* The resulting coordinates are rounded to nearest integer.
*
* Also see wlr_region_scalef_xy().
*/
void wlr_region_scalef(pixman_region32_t *dst, const pixman_region64f_t *src,
float scale);
/**
* Scale a region by the specified factors.
*
* The X and Y coordinates are scaled separately by scale_x and scale_y.
*
* The resulting coordinates are rounded to nearest integer.
*/
void wlr_region_scalef_xy(pixman_region32_t *dst, const pixman_region64f_t *src,
float scale_x, float scale_y);
/**
* Copy an integer region into a fractional region.
*/
void wlr_region64f_copy_from_region32(pixman_region64f_t *dst, const pixman_region32_t *src);
/**
* Applies a transform to a region inside a box of size `width` x `height`.
*/