Units.h
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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /*
3  * This file is part of the libpagemaker project.
4  *
5  * This Source Code Form is subject to the terms of the Mozilla Public
6  * License, v. 2.0. If a copy of the MPL was not distributed with this
7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8  */
9 
10 #ifndef LIBPAGEMAKER_UNITS_H
11 #define LIBPAGEMAKER_UNITS_H
12 
13 #include <string>
14 
15 // TODO: remove this pointless abstraction.
16 
17 namespace libpagemaker
18 {
19 const unsigned SHAPE_UNITS_PER_INCH = 1440;
20 
21 template <unsigned PER_INCH> class LengthUnit
22 {
24 public:
25  int m_value;
26 
27  LengthUnit(int value) : m_value(value) { }
28 
29  double toInches() const
30  {
31  return m_value / ((double)PER_INCH);
32  }
33 };
34 
35 template<unsigned PER_INCH> const LengthUnit<PER_INCH>
37 {
38  return LengthUnit<PER_INCH>(left.m_value + right.m_value);
39 }
40 
41 template<unsigned PER_INCH> const LengthUnit<PER_INCH>
43 {
44  return LengthUnit<PER_INCH>(left.m_value * right);
45 }
46 
47 template<unsigned PER_INCH> const LengthUnit<PER_INCH>
49 {
50  return right * left;
51 }
52 
53 template<unsigned PER_INCH> const LengthUnit<PER_INCH>
55 {
56  return LengthUnit<PER_INCH>(left.m_value - right.m_value);
57 }
58 
60 
61 }
62 
63 #endif /* LIBPAGEMAKER_UNITS_H */
64 
65 /* vim:set shiftwidth=2 softtabstop=2 expandtab: */
libpagemaker::PMDShapeUnit
LengthUnit< SHAPE_UNITS_PER_INCH > PMDShapeUnit
Definition: Units.h:59
libpagemaker::LengthUnit
Definition: Units.h:21
libpagemaker::LengthUnit::T
LengthUnit< PER_INCH > T
Definition: Units.h:23
libpagemaker::operator+
const LengthUnit< PER_INCH > operator+(LengthUnit< PER_INCH > left, LengthUnit< PER_INCH > right)
Definition: Units.h:36
libpagemaker::operator-
const LengthUnit< PER_INCH > operator-(LengthUnit< PER_INCH > left, LengthUnit< PER_INCH > right)
Definition: Units.h:54
libpagemaker::LengthUnit::toInches
double toInches() const
Definition: Units.h:29
libpagemaker::SHAPE_UNITS_PER_INCH
const unsigned SHAPE_UNITS_PER_INCH
Definition: Units.h:19
libpagemaker::LengthUnit::LengthUnit
LengthUnit(int value)
Definition: Units.h:27
libpagemaker
Definition: geometry.h:22
libpagemaker::LengthUnit::m_value
int m_value
Definition: Units.h:25
libpagemaker::operator*
const LengthUnit< PER_INCH > operator*(LengthUnit< PER_INCH > left, int right)
Definition: Units.h:42

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