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x: add x_{create,destroy}_region 

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2022-12-14 07:37:27 +00:00
parent 88608027b8
commit e407c5c765
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GPG Key ID: D3A4405BE6CC17F4
2 changed files with 38 additions and 0 deletions
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32
src/x.c
View File

@ -388,6 +388,38 @@ bool x_fetch_region(xcb_connection_t *c, xcb_xfixes_region_t r, pixman_region32_
return ret;
}
uint32_t x_create_region(xcb_connection_t *c, const region_t *reg) {
if (!reg) {
return XCB_NONE;
}
int nrects;
auto rects = pixman_region32_rectangles(reg, &nrects);
auto xrects = ccalloc(nrects, xcb_rectangle_t);
for (int i = 0; i < nrects; i++) {
xrects[i] =
(xcb_rectangle_t){.x = to_i16_checked(rects[i].x1),
.y = to_i16_checked(rects[i].y1),
.width = to_u16_checked(rects[i].x2 - rects[i].x1),
.height = to_u16_checked(rects[i].y2 - rects[i].y1)};
}
xcb_xfixes_region_t ret = x_new_id(c);
bool success =
XCB_AWAIT_VOID(xcb_xfixes_create_region, c, ret, to_u32_checked(nrects), xrects);
free(xrects);
if (!success) {
return XCB_NONE;
}
return ret;
}
void x_destroy_region(xcb_connection_t *c, xcb_xfixes_region_t r) {
if (r != XCB_NONE) {
xcb_xfixes_destroy_region(c, r);
}
}
void x_set_picture_clip_region(xcb_connection_t *c, xcb_render_picture_t pict,
int16_t clip_x_origin, int16_t clip_y_origin,
const region_t *reg) {

6
src/x.h
View File

@ -216,6 +216,12 @@ x_create_picture_with_visual(xcb_connection_t *, xcb_drawable_t, int w, int h,
/// Fetch a X region and store it in a pixman region
bool x_fetch_region(xcb_connection_t *, xcb_xfixes_region_t r, region_t *res);
/// Create a X region from a pixman region
uint32_t x_create_region(xcb_connection_t *c, const region_t *reg);
/// Destroy a X region
void x_destroy_region(xcb_connection_t *c, uint32_t region);
void x_set_picture_clip_region(xcb_connection_t *, xcb_render_picture_t, int16_t clip_x_origin,
int16_t clip_y_origin, const region_t *);