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util/geometry.h: test (in)equality of rectangles

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The operators == and != make the 'Rect' consistent with 'Point' and
'Area'. The patch also adds the 'Rect::clamp' method, which is generally
useful for sanitizing input.

Issue #5352
This commit is contained in:
Norman Feske 2024-09-27 11:34:15 +02:00 committed by Christian Helmuth
parent 7579fe5749
commit 88dc4c878f
1 changed files with 18 additions and 2 deletions
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repos/base/include/util/geometry.h
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@ -224,10 +224,26 @@ struct Genode::Rect
*/
Point center(Area const area) const
{
return Point((CT(w()) - CT(area.w))/2,
(CT(h()) - CT(area.h))/2) + at;
return Point { .x = (CT(w()) - CT(area.w))/2,
.y = (CT(h()) - CT(area.h))/2 } + at;
}
Point clamp(Point const p) const
{
return Point { .x = max(x1(), min(x2(), p.x)),
.y = max(y1(), min(y2(), p.y)) };
}
/**
* Operator for testing non-equality of two rectangled
*/
bool operator != (Rect const &r) const { return r.at != at || r.area != area; }
/**
* Operator for testing equality of two rectangles
*/
bool operator == (Rect const &r) const { return r.at == at && r.area == area; }
/**
* Print rectangle coordinates
*