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rootston: fix urxvt damage on HiDPI outputs

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util/region: add wlr_region_expand
This commit is contained in:
emersion 2018-01-30 12:01:10 +01:00
parent d498855b9d
commit 2a855e6282
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3 changed files with 40 additions and 0 deletions
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27
util/region.c
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@ -101,3 +101,30 @@ void wlr_region_transform(pixman_region32_t *dst, pixman_region32_t *src,
pixman_region32_init_rects(dst, dst_rects, nrects);
free(dst_rects);
}
void wlr_region_expand(pixman_region32_t *dst, pixman_region32_t *src,
int distance) {
if (distance == 0) {
pixman_region32_copy(dst, src);
return;
}
int nrects;
pixman_box32_t *src_rects = pixman_region32_rectangles(src, &nrects);
pixman_box32_t *dst_rects = malloc(nrects * sizeof(pixman_box32_t));
if (dst_rects == NULL) {
return;
}
for (int i = 0; i < nrects; ++i) {
dst_rects[i].x1 = src_rects[i].x1 - distance;
dst_rects[i].x2 = src_rects[i].x2 + distance;
dst_rects[i].y1 = src_rects[i].y1 - distance;
dst_rects[i].y2 = src_rects[i].y2 + distance;
}
pixman_region32_fini(dst);
pixman_region32_init_rects(dst, dst_rects, nrects);
free(dst_rects);
}