1/*
2 Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
4 Copyright (C) 2011 Rik Cabanier (cabanier@adobe.com)
5 Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
6 Copyright (C) 2012 Motorola Mobility, Inc. All rights reserved.
7
8 This library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Library General Public
10 License as published by the Free Software Foundation; either
11 version 2 of the License, or (at your option) any later version.
12
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Library General Public License for more details.
17
18 You should have received a copy of the GNU Library General Public License
19 along with this library; see the file COPYING.LIB. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA.
22*/
23
24#include "config.h"
25#include "LengthFunctions.h"
26
27#include "FloatSize.h"
28#include "LayoutSize.h"
29#include "LengthSize.h"
30
31namespace WebCore {
32
33int intValueForLength(const Length& length, LayoutUnit maximumValue)
34{
35 return static_cast<int>(valueForLength(length, maximumValue));
36}
37
38LayoutUnit valueForLength(const Length& length, LayoutUnit maximumValue)
39{
40 switch (length.type()) {
41 case Fixed:
42 case Percent:
43 case Calculated:
44 return minimumValueForLength(length, maximumValue);
45 case FillAvailable:
46 case Auto:
47 return maximumValue;
48 case Relative:
49 case Intrinsic:
50 case MinIntrinsic:
51 case MinContent:
52 case MaxContent:
53 case FitContent:
54 case Undefined:
55 ASSERT_NOT_REACHED();
56 return 0;
57 }
58 ASSERT_NOT_REACHED();
59 return 0;
60}
61
62LayoutSize sizeForLengthSize(const LengthSize& length, const LayoutSize& maximumValue)
63{
64 return { valueForLength(length.width, maximumValue.width()), valueForLength(length.height, maximumValue.height()) };
65}
66
67// FIXME: when subpixel layout is supported this copy of floatValueForLength() can be removed. See bug 71143.
68float floatValueForLength(const Length& length, LayoutUnit maximumValue)
69{
70 switch (length.type()) {
71 case Fixed:
72 return length.value();
73 case Percent:
74 return static_cast<float>(maximumValue * length.percent() / 100.0f);
75 case FillAvailable:
76 case Auto:
77 return static_cast<float>(maximumValue);
78 case Calculated:
79 return length.nonNanCalculatedValue(maximumValue);
80 case Relative:
81 case Intrinsic:
82 case MinIntrinsic:
83 case MinContent:
84 case MaxContent:
85 case FitContent:
86 case Undefined:
87 ASSERT_NOT_REACHED();
88 return 0;
89 }
90 ASSERT_NOT_REACHED();
91 return 0;
92}
93
94float floatValueForLength(const Length& length, float maximumValue)
95{
96 switch (length.type()) {
97 case Fixed:
98 return length.value();
99 case Percent:
100 return static_cast<float>(maximumValue * length.percent() / 100.0f);
101 case FillAvailable:
102 case Auto:
103 return static_cast<float>(maximumValue);
104 case Calculated:
105 return length.nonNanCalculatedValue(maximumValue);
106 case Relative:
107 case Intrinsic:
108 case MinIntrinsic:
109 case MinContent:
110 case MaxContent:
111 case FitContent:
112 case Undefined:
113 ASSERT_NOT_REACHED();
114 return 0;
115 }
116 ASSERT_NOT_REACHED();
117 return 0;
118}
119
120FloatSize floatSizeForLengthSize(const LengthSize& lengthSize, const FloatSize& boxSize)
121{
122 return { floatValueForLength(lengthSize.width, boxSize.width()), floatValueForLength(lengthSize.height, boxSize.height()) };
123}
124
125} // namespace WebCore
126