mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-11-09 15:05:58 +01:00
103 lines
3 KiB
C
103 lines
3 KiB
C
#include <stdlib.h>
|
|
#include <math.h>
|
|
#include <wlr/util/region.h>
|
|
|
|
void wlr_region_scale(pixman_region32_t *dst, pixman_region32_t *src,
|
|
float scale) {
|
|
if (scale == 1) {
|
|
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 = floor(src_rects[i].x1 * scale);
|
|
dst_rects[i].x2 = ceil(src_rects[i].x2 * scale);
|
|
dst_rects[i].y1 = floor(src_rects[i].y1 * scale);
|
|
dst_rects[i].y2 = ceil(src_rects[i].y2 * scale);
|
|
}
|
|
|
|
pixman_region32_fini(dst);
|
|
pixman_region32_init_rects(dst, dst_rects, nrects);
|
|
free(dst_rects);
|
|
}
|
|
|
|
void wlr_region_transform(pixman_region32_t *dst, pixman_region32_t *src,
|
|
enum wl_output_transform transform, int width, int height) {
|
|
if (transform == WL_OUTPUT_TRANSFORM_NORMAL) {
|
|
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) {
|
|
switch (transform) {
|
|
case WL_OUTPUT_TRANSFORM_NORMAL:
|
|
dst_rects[i].x1 = src_rects[i].x1;
|
|
dst_rects[i].y1 = src_rects[i].y1;
|
|
dst_rects[i].x2 = src_rects[i].x2;
|
|
dst_rects[i].y2 = src_rects[i].y2;
|
|
break;
|
|
case WL_OUTPUT_TRANSFORM_90:
|
|
dst_rects[i].x1 = src_rects[i].y1;
|
|
dst_rects[i].y1 = width - src_rects[i].x2;
|
|
dst_rects[i].x2 = src_rects[i].y2;
|
|
dst_rects[i].y2 = width - src_rects[i].x1;
|
|
break;
|
|
case WL_OUTPUT_TRANSFORM_180:
|
|
dst_rects[i].x1 = width - src_rects[i].x2;
|
|
dst_rects[i].y1 = height - src_rects[i].y2;
|
|
dst_rects[i].x2 = width - src_rects[i].x1;
|
|
dst_rects[i].y2 = height - src_rects[i].y1;
|
|
break;
|
|
case WL_OUTPUT_TRANSFORM_270:
|
|
dst_rects[i].x1 = height - src_rects[i].y2;
|
|
dst_rects[i].y1 = src_rects[i].x1;
|
|
dst_rects[i].x2 = height - src_rects[i].y1;
|
|
dst_rects[i].y2 = src_rects[i].x2;
|
|
break;
|
|
case WL_OUTPUT_TRANSFORM_FLIPPED:
|
|
dst_rects[i].x1 = width - src_rects[i].x2;
|
|
dst_rects[i].y1 = src_rects[i].y1;
|
|
dst_rects[i].x2 = width - src_rects[i].x1;
|
|
dst_rects[i].y2 = src_rects[i].y2;
|
|
break;
|
|
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
|
|
dst_rects[i].x1 = height - src_rects[i].y2;
|
|
dst_rects[i].y1 = width - src_rects[i].x2;
|
|
dst_rects[i].x2 = height - src_rects[i].y1;
|
|
dst_rects[i].y2 = width - src_rects[i].x1;
|
|
break;
|
|
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
|
|
dst_rects[i].x1 = src_rects[i].x1;
|
|
dst_rects[i].y1 = height - src_rects[i].y2;
|
|
dst_rects[i].x2 = src_rects[i].x2;
|
|
dst_rects[i].y2 = height - src_rects[i].y1;
|
|
break;
|
|
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
|
|
dst_rects[i].x1 = src_rects[i].y1;
|
|
dst_rects[i].y1 = src_rects[i].x1;
|
|
dst_rects[i].x2 = src_rects[i].y2;
|
|
dst_rects[i].y2 = src_rects[i].x2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
pixman_region32_fini(dst);
|
|
pixman_region32_init_rects(dst, dst_rects, nrects);
|
|
free(dst_rects);
|
|
}
|