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* CoordCache: prepare transfer of MathData dimension to arrays cache.

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@20464 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Abdelrazak Younes 2007-09-24 13:47:03 +00:00
parent 3ab8eef56a
commit a42571cab4
1 changed files with 33 additions and 0 deletions
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33
src/CoordCache.h
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@ -52,6 +52,25 @@ struct Geometry {
&& y >= pos.y_ - dim.asc
&& y <= pos.y_ + dim.des;
}
int squareDistance(int x, int y) const
{
int xx = 0;
int yy = 0;
if (x < pos.x_)
xx = pos.x_ - x;
else if (x > pos.x_ + dim.wid)
xx = x - pos.x_ - dim.wid;
if (y < pos.y_ - dim.asc)
yy = pos.y_ - dim.asc - y;
else if (y > pos.y_ + dim.des)
yy = y - pos.y_ - dim.des;
// Optimisation: We avoid to compute the sqrt on purpose.
return xx*xx + yy*yy;
}
};
@ -77,6 +96,12 @@ public:
data_[thing].dim = dim;
}
Geometry const & geometry(T const * thing) const
{
check(thing, "geometry");
return data_.find(thing)->second;
}
Dimension const & dim(T const * thing) const
{
check(thing, "dim");
@ -112,6 +137,14 @@ public:
return it != data_.end() && it->second.covers(x, y);
}
int squareDistance(T const * thing, int x, int y) const
{
cache_type::const_iterator it = data_.find(thing);
if (it == data_.end())
return 1000000;
return it->second.squareDistance(x, y);
}
private:
friend class CoordCache;