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1 // Copyright 2017 The PDFium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #include "core/fxcrt/css/cfx_cssnumbervalue.h"
8 
9 #include <math.h>
10 
CFX_CSSNumberValue(CFX_CSSNumber number)11 CFX_CSSNumberValue::CFX_CSSNumberValue(CFX_CSSNumber number)
12     : CFX_CSSValue(PrimitiveType::kNumber), number_(number) {
13   if (number_.unit == CFX_CSSNumber::Unit::kNumber &&
14       fabs(number_.value) < 0.001f) {
15     number_.value = 0.0f;
16   }
17 }
18 
19 CFX_CSSNumberValue::~CFX_CSSNumberValue() = default;
20 
Apply(float percentBase) const21 float CFX_CSSNumberValue::Apply(float percentBase) const {
22   switch (number_.unit) {
23     case CFX_CSSNumber::Unit::kPixels:
24     case CFX_CSSNumber::Unit::kNumber:
25       return number_.value * 72 / 96;
26     case CFX_CSSNumber::Unit::kEMS:
27     case CFX_CSSNumber::Unit::kEXS:
28       return number_.value * percentBase;
29     case CFX_CSSNumber::Unit::kPercent:
30       return number_.value * percentBase / 100.0f;
31     case CFX_CSSNumber::Unit::kCentiMeters:
32       return number_.value * 28.3464f;
33     case CFX_CSSNumber::Unit::kMilliMeters:
34       return number_.value * 2.8346f;
35     case CFX_CSSNumber::Unit::kInches:
36       return number_.value * 72.0f;
37     case CFX_CSSNumber::Unit::kPicas:
38       return number_.value / 12.0f;
39     case CFX_CSSNumber::Unit::kPoints:
40       return number_.value;
41   }
42 }
43