2 Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "vertical_position.h"
26 VerticalPosition::fraction_from_screen_top () const
28 if (!reference || (!proportional && !line)) {
32 float const prop = proportional ? proportional.get() : (float (line.get()) / lines.get ());
34 switch (reference.get ()) {
37 case VERTICAL_CENTRE_OF_SCREEN:
39 case BOTTOM_OF_SCREEN:
49 VerticalPosition::operator== (VerticalPosition const & other) const
51 if (proportional && reference && other.proportional && other.reference) {
52 return proportional == other.proportional && reference == other.reference;
53 } else if (reference && line && lines && other.reference && other.line && other.lines) {
54 return line == other.line && lines == other.lines && reference == other.reference;
55 } else if (reference && line && other.reference && other.line) {
56 return reference == other.reference && line == other.line;
63 VerticalPosition::operator< (VerticalPosition const & other) const
65 return fraction_from_screen_top() < other.fraction_from_screen_top();