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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef BorderWidth_h | |
6 #define BorderWidth_h | |
7 | |
8 #include "core/style/ComputedStyleConstants.h" | |
9 | |
10 namespace blink { | |
11 | |
12 class BorderWidth { | |
13 DISALLOW_NEW(); | |
14 friend class ComputedStyle; | |
shend
2017/05/23 08:05:32
does this need to be a friend?
nainar
2017/05/23 08:10:04
nope artifact of BorderValue which I blatantly cop
| |
15 | |
16 public: | |
17 BorderWidth() { SetWidth(3); } | |
18 | |
19 BorderWidth(float width) { SetWidth(width); } | |
20 | |
21 bool operator==(const BorderWidth& o) const { return width_ == o.width_; } | |
22 | |
23 bool operator!=(const BorderWidth& o) const { return !(*this == o); } | |
24 | |
25 float Width() const { | |
26 return static_cast<float>(width_) / kBorderWidthDenominator; | |
27 } | |
28 void SetWidth(float width) { width_ = WidthToFixedPoint(width); } | |
29 | |
30 // Since precision is lost with fixed point, comparisons also have | |
31 // to be done in fixed point. | |
32 bool WidthEquals(float width) const { | |
33 return WidthToFixedPoint(width) == width_; | |
34 } | |
35 | |
36 protected: | |
shend
2017/05/23 08:05:32
I would just do private.
nainar
2017/05/23 08:10:04
Done.
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37 static unsigned WidthToFixedPoint(float width) { | |
38 DCHECK_GE(width, 0); | |
39 return static_cast<unsigned>(std::min<float>(width, kMaxForBorderWidth) * | |
40 kBorderWidthDenominator); | |
41 } | |
42 | |
43 unsigned width_ : 26; // Fixed point width | |
shend
2017/05/23 08:05:32
there's probably no need to bit pack this anymore,
nainar
2017/05/23 08:10:04
Yup. Done
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44 }; | |
45 | |
46 } // namespace blink | |
47 | |
48 #endif // BorderWidth_h | |
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