1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 // vim:cindent:ts=8:et:sw=4:
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 /* a set of ranges on a number-line */
9 #ifndef nsIntervalSet_h___
10 #define nsIntervalSet_h___
15 (* IntervalSetAlloc
)(size_t aBytes
, void *aClosure
);
18 (* IntervalSetFree
) (size_t aBytes
, void *aPtr
, void *aClosure
);
21 * A list-based class (hopefully tree-based when I get around to it)
22 * for representing a set of ranges on a number-line.
28 typedef nscoord coord_type
;
30 nsIntervalSet(IntervalSetAlloc aAlloc
, IntervalSetFree aFree
,
31 void* aAllocatorClosure
);
35 * Include the interval [aBegin, aEnd] in the set.
37 * Removal of intervals added is not supported because that would
38 * require keeping track of the individual intervals that were
39 * added (nsIntervalMap should do that). It would be simple to
40 * implement ExcludeInterval if anyone wants it, though.
42 void IncludeInterval(coord_type aBegin
, coord_type aEnd
);
45 * Are _some_ points in [aBegin, aEnd] contained within the set
48 bool Intersects(coord_type aBegin
, coord_type aEnd
) const;
51 * Are _all_ points in [aBegin, aEnd] contained within the set
54 bool Contains(coord_type aBegin
, coord_type aEnd
) const;
66 Interval(coord_type aBegin
, coord_type aEnd
)
80 void FreeInterval(Interval
*aInterval
);
83 IntervalSetAlloc mAlloc
;
84 IntervalSetFree mFree
;
85 void *mAllocatorClosure
;
89 #endif // !defined(nsIntervalSet_h___)