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wayland clipping
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IoIxD 2026-04-19 18:50:33 -07:00
commit e0554cdb92
2 changed files with 47 additions and 6 deletions
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2
include/Mw/LowLevel/Wayland.h
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@ -408,6 +408,8 @@ struct _MwLLWayland {
enum _MwLLWaylandType type;
enum _MwLLWaylandType type_to_be;
MwRect clipping_rect;
MwBool detatching;
MwPoint detach_point;

51
src/backend/wayland.c
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@ -1349,14 +1349,14 @@ static void region_invalidate(MwLL handle) {
}
static void region_setup(MwLL handle) {
MwLL parent = handle->wayland.parent;
int width = handle->wayland.ww;
int height = handle->wayland.wh;
int width = (handle->wayland.clipping_rect.width == 0) ? handle->wayland.ww : handle->wayland.clipping_rect.width;
int height = (handle->wayland.clipping_rect.height == 0) ? handle->wayland.wh : handle->wayland.clipping_rect.height;
if(!handle->wayland.configured) {
return;
}
wl_region_add(handle->wayland.o_region, 0, 0, width, height);
// wl_region_add(handle->wayland.o_region, 0, 0, width, height);
if(handle->wayland.type == MWLL_WAYLAND_POPUP) {
wl_region_add(handle->wayland.region, 0, 0, width + abs(handle->wayland.x), height + abs(handle->wayland.y));
@ -1716,10 +1716,49 @@ static void destroy_popup(MwLL r) {
}
static void clip(MwLL handle) {
MwLL parent = handle->wayland.parent;
if(parent && handle->wayland.type == MWLL_WAYLAND_SUBLEVEL) {
int i;
int w, h, x, y, cx, cy;
MwLL toplevel = handle->wayland.parent;
MwLL* ws = NULL;
arrpush(ws, handle);
while(toplevel) {
arrpush(ws, toplevel);
if(!toplevel->wayland.parent) {
break;
}
toplevel = toplevel->wayland.parent;
}
if(toplevel) {
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
w = toplevel->wayland.ww;
h = toplevel->wayland.wh;
x = 0;
y = 0;
cx = 0;
cy = 0;
// # ws is traversed result
// # ws[ws.length - 1] is ignored bc it's toplevel
for(i = arrlen(ws) - 2; i >= 0; i--) {
;
x += ws[i]->wayland.x;
y += ws[i]->wayland.y;
cx = cx - ws[i]->wayland.x;
cy = cy - ws[i]->wayland.y;
w = MIN(x + ws[i]->wayland.ww, w);
h = MIN(y + ws[i]->wayland.wh, h);
}
cx = MAX(cx, 0);
cy = MAX(cy, 0);
handle->wayland.clipping_rect.x = cx;
handle->wayland.clipping_rect.y = cy;
handle->wayland.clipping_rect.width = w;
handle->wayland.clipping_rect.height = h;
region_setup(handle);
cairo_reset_clip(handle->wayland.front_cairo);
cairo_rectangle(handle->wayland.front_cairo, 0, 0, (parent->wayland.ww + handle->wayland.x), (parent->wayland.wh + handle->wayland.y));
cairo_rectangle(handle->wayland.front_cairo, cx, cy, w, h);
cairo_clip(handle->wayland.front_cairo);
}
}