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/*
Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "vertical_position.h"
#include <iostream>
using namespace sub;
float
VerticalPosition::fraction_from_screen_top () const
{
if (!reference || (!proportional && !line)) {
return 0;
}
float const prop = proportional ? proportional.get() : (float (line.get()) / lines.get ());
switch (reference.get ()) {
case TOP_OF_SCREEN:
return prop;
case VERTICAL_CENTRE_OF_SCREEN:
return prop + 0.5;
case BOTTOM_OF_SCREEN:
return 1 - prop;
case TOP_OF_SUBTITLE:
return prop;
}
return 0;
}
bool
VerticalPosition::operator== (VerticalPosition const & other) const
{
if (proportional && reference && other.proportional && other.reference) {
return proportional == other.proportional && reference == other.reference;
} else if (reference && line && lines && other.reference && other.line && other.lines) {
return line == other.line && lines == other.lines && reference == other.reference;
} else if (reference && line && other.reference && other.line) {
return reference == other.reference && line == other.line;
}
return false;
}
bool
VerticalPosition::operator< (VerticalPosition const & other) const
{
return fraction_from_screen_top() < other.fraction_from_screen_top();
}
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