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4555fc8a54
It was broken because the damage extents were rotated about its own center, not about the center of the surface. This adds a new wlr_region_rotated_bounds that rotates regions. This allows us to have only one code path (for both non-rotated views and rotated views) and optimizes rendering for rotated views.
37 lines
1019 B
C
37 lines
1019 B
C
#ifndef WLR_UTIL_REGION_H
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#define WLR_UTIL_REGION_H
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#include <pixman.h>
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#include <wayland-server.h>
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/**
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* Scales a region, ie. multiplies all its coordinates by `scale`.
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*
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* The resulting coordinates are rounded up or down so that the new region is
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* at least as big as the original one.
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*/
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void wlr_region_scale(pixman_region32_t *dst, pixman_region32_t *src,
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float scale);
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/**
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* Applies a transform to a region inside a box of size `width` x `height`.
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*/
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void wlr_region_transform(pixman_region32_t *dst, pixman_region32_t *src,
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enum wl_output_transform transform, int width, int height);
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/**
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* Expands the region of `distance`. If `distance` is negative, it shrinks the
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* region.
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*/
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void wlr_region_expand(pixman_region32_t *dst, pixman_region32_t *src,
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int distance);
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/*
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* Builds the smallest possible region that contains the region rotated about
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* the point (ox, oy).
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*/
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void wlr_region_rotated_bounds(pixman_region32_t *dst, pixman_region32_t *src,
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float rotation, int ox, int oy);
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#endif
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