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| 1 /* | |
| 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) | |
| 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) | |
| 4 * (C) 2000 Dirk Mueller (mueller@kde.org) | |
| 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. | |
| 6 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com) | |
| 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 | |
| 25 #ifndef CollapsedBorderValue_h | |
| 26 #define CollapsedBorderValue_h | |
| 27 | |
| 28 #include "core/style/BorderValue.h" | |
| 29 #include "platform/wtf/Allocator.h" | |
| 30 | |
| 31 namespace blink { | |
| 32 | |
| 33 class CollapsedBorderValue { | |
| 34 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); | |
| 35 | |
| 36 public: | |
| 37 CollapsedBorderValue() | |
| 38 : color_(0), | |
| 39 width_(0), | |
| 40 style_(kBorderStyleNone), | |
| 41 precedence_(kBorderPrecedenceOff), | |
| 42 transparent_(false) {} | |
| 43 | |
| 44 CollapsedBorderValue(const BorderValue& border, | |
| 45 const Color& color, | |
| 46 EBorderPrecedence precedence) | |
| 47 : color_(color), | |
| 48 width_(border.NonZero() ? border.Width() : 0), | |
| 49 style_(border.Style()), | |
| 50 precedence_(precedence), | |
| 51 transparent_(border.IsTransparent()) {} | |
| 52 | |
| 53 unsigned Width() const { return style_ > kBorderStyleHidden ? width_ : 0; } | |
| 54 EBorderStyle Style() const { return static_cast<EBorderStyle>(style_); } | |
| 55 bool Exists() const { return precedence_ != kBorderPrecedenceOff; } | |
| 56 Color GetColor() const { return color_; } | |
| 57 bool IsTransparent() const { return transparent_; } | |
| 58 EBorderPrecedence Precedence() const { | |
| 59 return static_cast<EBorderPrecedence>(precedence_); | |
| 60 } | |
| 61 | |
| 62 bool IsSameIgnoringColor(const CollapsedBorderValue& o) const { | |
| 63 return Width() == o.Width() && Style() == o.Style() && | |
| 64 Precedence() == o.Precedence(); | |
| 65 } | |
| 66 | |
| 67 bool VisuallyEquals(const CollapsedBorderValue& o) const { | |
| 68 if (!IsVisible() && !o.IsVisible()) | |
| 69 return true; | |
| 70 return GetColor() == o.GetColor() && IsTransparent() == o.IsTransparent() && | |
| 71 IsSameIgnoringColor(o); | |
| 72 } | |
| 73 | |
| 74 bool IsVisible() const { | |
| 75 return Style() > kBorderStyleHidden && !IsTransparent() && Exists(); | |
| 76 } | |
| 77 | |
| 78 bool ShouldPaint( | |
| 79 const CollapsedBorderValue& table_current_border_value) const { | |
| 80 return IsVisible() && IsSameIgnoringColor(table_current_border_value); | |
| 81 } | |
| 82 | |
| 83 private: | |
| 84 Color color_; | |
| 85 unsigned width_ : 24; | |
| 86 unsigned style_ : 4; // EBorderStyle | |
| 87 unsigned precedence_ : 3; // EBorderPrecedence | |
| 88 unsigned transparent_ : 1; | |
| 89 }; | |
| 90 | |
| 91 } // namespace blink | |
| 92 | |
| 93 #endif // CollapsedBorderValue_h | |
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Chromium Code Reviews
Issue 2842323002:
Treat zero-width collapsed borders as invisible (Closed)
