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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/html/TimeRanges.h | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/html/TimeRanges.h')
-rw-r--r-- | Source/WebCore/html/TimeRanges.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/Source/WebCore/html/TimeRanges.h b/Source/WebCore/html/TimeRanges.h new file mode 100644 index 0000000..2d7af25 --- /dev/null +++ b/Source/WebCore/html/TimeRanges.h @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2007, 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef TimeRanges_h +#define TimeRanges_h + +#include "ExceptionCode.h" + +#include <algorithm> +#include <wtf/PassRefPtr.h> +#include <wtf/RefCounted.h> +#include <wtf/Vector.h> + +namespace WebCore { + +class TimeRanges : public RefCounted<TimeRanges> { +public: + static PassRefPtr<TimeRanges> create() + { + return adoptRef(new TimeRanges); + } + static PassRefPtr<TimeRanges> create(float start, float end) + { + return adoptRef(new TimeRanges(start, end)); + } + + PassRefPtr<TimeRanges> copy(); + + unsigned length() const { return m_ranges.size(); } + float start(unsigned index, ExceptionCode&) const; + float end(unsigned index, ExceptionCode&) const; + + void add(float start, float end); + + bool contain(float time) const; + + float nearest(float time) const; + +private: + TimeRanges() { } + TimeRanges(float start, float end); + TimeRanges(const TimeRanges&); + + // We consider all the Ranges to be semi-bounded as follow: [start, end[ + struct Range { + Range() { } + Range(float start, float end) + { + m_start = start; + m_end = end; + } + float m_start; + float m_end; + + inline bool isPointInRange(float point) const + { + return m_start <= point && point < m_end; + } + + inline bool isOverlappingRange(const Range& range) const + { + return isPointInRange(range.m_start) || isPointInRange(range.m_end) || range.isPointInRange(m_start); + } + + inline bool isContiguousWithRange(const Range& range) const + { + return range.m_start == m_end || range.m_end == m_start; + } + + inline Range unionWithOverlappingOrContiguousRange(const Range& range) const + { + Range ret; + + ret.m_start = std::min(m_start, range.m_start); + ret.m_end = std::max(m_end, range.m_end); + + return ret; + } + + inline bool isBeforeRange(const Range& range) const + { + return range.m_start >= m_end; + } + }; + + Vector<Range> m_ranges; +}; + +} // namespace WebCore + +#endif |