forked from mia/Aegisub
75 lines
3 KiB
C
75 lines
3 KiB
C
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// Copyright (c) 2010, Niels Martin Hansen
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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/// @file time_range.h
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/// @ingroup audio_ui
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/// @class TimeRange
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/// @brief Represents an immutable range of time
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class TimeRange {
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int _begin;
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int _end;
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public:
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/// @brief Constructor
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/// @param begin Index of the first millisecond to include in the range
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/// @param end Index of one past the last millisecond to include in the range
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TimeRange(int begin, int end) : _begin(begin), _end(end)
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{
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assert(end >= begin);
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}
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/// @brief Copy constructor, optionally adjusting the range
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/// @param src The range to duplicate
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/// @param begin_adjust Number of milliseconds to add to the start of the range
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/// @param end_adjust Number of milliseconds to add to the end of the range
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TimeRange(const TimeRange &src, int begin_adjust = 0, int end_adjust = 0)
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{
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_begin = src._begin + begin_adjust;
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_end = src._end + end_adjust;
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assert(_end >= _begin);
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}
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/// Get the length of the range in milliseconds
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int length() const { return _end - _begin; }
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/// Get the start time of the range in milliseconds
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int begin() const { return _begin; }
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/// Get the exclusive end time of the range in milliseconds
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int end() const { return _end; }
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/// Determine whether the range contains a given time in milliseconds
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bool contains(int ms) const { return ms >= begin() && ms < end(); }
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/// Determine whether there is an overlap between two ranges
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bool overlaps(const TimeRange &other) const
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{
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return other.contains(_begin) || contains(other._begin);
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}
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};
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