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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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31 #ifndef CSSToLengthConversionData_h | 31 #ifndef CSSToLengthConversionData_h |
32 #define CSSToLengthConversionData_h | 32 #define CSSToLengthConversionData_h |
33 | 33 |
34 #include "wtf/Assertions.h" | 34 #include "wtf/Assertions.h" |
35 #include "wtf/Noncopyable.h" | 35 #include "wtf/Noncopyable.h" |
36 | 36 |
37 namespace blink { | 37 namespace blink { |
38 | 38 |
39 class RenderStyle; | 39 class RenderStyle; |
40 class RenderView; | 40 class RenderView; |
| 41 class Font; |
41 | 42 |
42 class CSSToLengthConversionData { | 43 class CSSToLengthConversionData { |
43 public: | 44 public: |
44 CSSToLengthConversionData(const RenderStyle* currStyle, const RenderStyle* r
ootStyle, const RenderView*, float zoom, bool computingFontSize = false); | |
45 CSSToLengthConversionData(const RenderStyle* currStyle, const RenderStyle* r
ootStyle, const RenderView*, bool computingFontSize = false); | |
46 CSSToLengthConversionData(const RenderStyle* currStyle, const RenderStyle* r
ootStyle, float viewportWidth, float viewportHeight, float zoom, bool computingF
ontSize = false); | |
47 | 45 |
48 const RenderStyle& style() const { return *m_style; } | 46 class FontSizes { |
49 const RenderStyle* rootStyle() const { return m_rootStyle; } | 47 public: |
50 float zoom() const; | 48 FontSizes() : m_em(0), m_rem(0), m_font(nullptr) { } |
51 bool computingFontSize() const { return m_computingFontSize; } | 49 FontSizes(float em, float rem, const Font*); |
| 50 FontSizes(const RenderStyle*, const RenderStyle* rootStyle); |
| 51 |
| 52 float em() const { return m_em; } |
| 53 float rem() const { return m_rem; } |
| 54 float ex() const; |
| 55 float ch() const; |
| 56 private: |
| 57 float m_em; |
| 58 float m_rem; |
| 59 const Font* m_font; |
| 60 }; |
| 61 |
| 62 class ViewportSize { |
| 63 public: |
| 64 ViewportSize() : m_width(0), m_height(0) { } |
| 65 ViewportSize(double width, double height) : m_width(width), m_height(hei
ght) { } |
| 66 explicit ViewportSize(const RenderView*); |
| 67 |
| 68 double width() const { return m_width; } |
| 69 double height() const { return m_height; } |
| 70 private: |
| 71 double m_width; |
| 72 double m_height; |
| 73 }; |
| 74 |
| 75 CSSToLengthConversionData() { } |
| 76 CSSToLengthConversionData(const RenderStyle*, const FontSizes&, const Viewpo
rtSize&, float zoom); |
| 77 CSSToLengthConversionData(const RenderStyle* currStyle, const RenderStyle* r
ootStyle, const RenderView*, float zoom); |
| 78 |
| 79 float zoom() const { return m_zoom; } |
| 80 |
| 81 float emFontSize() const { return m_fontSizes.em(); } |
| 82 float remFontSize() const { return m_fontSizes.rem(); } |
| 83 float exFontSize() const { return m_fontSizes.ex(); } |
| 84 float chFontSize() const { return m_fontSizes.ch(); } |
52 | 85 |
53 // Accessing these marks the style as having viewport units | 86 // Accessing these marks the style as having viewport units |
54 double viewportWidthPercent() const; | 87 double viewportWidthPercent() const; |
55 double viewportHeightPercent() const; | 88 double viewportHeightPercent() const; |
56 double viewportMinPercent() const; | 89 double viewportMinPercent() const; |
57 double viewportMaxPercent() const; | 90 double viewportMaxPercent() const; |
58 | 91 |
59 void setStyle(const RenderStyle* style) { m_style = style; } | 92 void setFontSizes(const FontSizes& fontSizes) { m_fontSizes = fontSizes; } |
60 void setRootStyle(const RenderStyle* rootStyle) { m_rootStyle = rootStyle; } | 93 void setZoom(float zoom) { m_zoom = zoom; } |
61 | 94 |
62 CSSToLengthConversionData copyWithAdjustedZoom(float newZoom) const | 95 CSSToLengthConversionData copyWithAdjustedZoom(float newZoom) const |
63 { | 96 { |
64 return CSSToLengthConversionData(m_style, m_rootStyle, m_viewportWidth,
m_viewportHeight, newZoom, m_computingFontSize); | 97 return CSSToLengthConversionData(m_style, m_fontSizes, m_viewportSize, n
ewZoom); |
65 } | 98 } |
66 | 99 |
67 private: | 100 private: |
68 const RenderStyle* m_style; | 101 const RenderStyle* m_style; |
69 const RenderStyle* m_rootStyle; | 102 FontSizes m_fontSizes; |
70 float m_viewportWidth; | 103 ViewportSize m_viewportSize; |
71 float m_viewportHeight; | |
72 float m_zoom; | 104 float m_zoom; |
73 bool m_useEffectiveZoom; | |
74 bool m_computingFontSize; | |
75 }; | 105 }; |
76 | 106 |
77 } // namespace blink | 107 } // namespace blink |
78 | 108 |
79 #endif | 109 #endif |
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