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 BorderValue_h 26 #define BorderValue_h 27 28 #include "core/css/StyleColor.h" 29 #include "core/rendering/style/RenderStyleConstants.h" 30 #include "platform/graphics/Color.h" 31 32 namespace blink { 33 34 class BorderValue { 35 friend class RenderStyle; 36 public: BorderValue()37 BorderValue() 38 : m_color(0) 39 , m_colorIsCurrentColor(true) 40 , m_width(3) 41 , m_style(BNONE) 42 , m_isAuto(AUTO_OFF) 43 { 44 } 45 46 bool nonZero(bool checkStyle = true) const 47 { 48 return width() && (!checkStyle || m_style != BNONE); 49 } 50 isTransparent()51 bool isTransparent() const 52 { 53 return !m_colorIsCurrentColor && !m_color.alpha(); 54 } 55 56 bool isVisible(bool checkStyle = true) const 57 { 58 return nonZero(checkStyle) && !isTransparent() && (!checkStyle || m_style != BHIDDEN); 59 } 60 61 bool operator==(const BorderValue& o) const 62 { 63 return m_width == o.m_width && m_style == o.m_style && m_color == o.m_color && m_colorIsCurrentColor == o.m_colorIsCurrentColor; 64 } 65 66 // The default width is 3px, but if the style is none we compute a value of 0 (in RenderStyle itself) visuallyEqual(const BorderValue & o)67 bool visuallyEqual(const BorderValue& o) const 68 { 69 if (m_style == BNONE && o.m_style == BNONE) 70 return true; 71 if (m_style == BHIDDEN && o.m_style == BHIDDEN) 72 return true; 73 return *this == o; 74 } 75 76 bool operator!=(const BorderValue& o) const 77 { 78 return !(*this == o); 79 } 80 setColor(const StyleColor & color)81 void setColor(const StyleColor& color) 82 { 83 m_color = color.resolve(Color()); 84 m_colorIsCurrentColor = color.isCurrentColor(); 85 } 86 color()87 StyleColor color() const { return m_colorIsCurrentColor ? StyleColor::currentColor() : StyleColor(m_color); } 88 width()89 unsigned width() const { return m_width; } 90 style()91 EBorderStyle style() const { return static_cast<EBorderStyle>(m_style); } setStyle(EBorderStyle style)92 void setStyle(EBorderStyle style) { m_style = style; } 93 94 protected: 95 Color m_color; 96 unsigned m_colorIsCurrentColor : 1; 97 98 unsigned m_width : 26; 99 unsigned m_style : 4; // EBorderStyle 100 101 // This is only used by OutlineValue but moved here to keep the bits packed. 102 unsigned m_isAuto : 1; // OutlineIsAuto 103 }; 104 105 } // namespace blink 106 107 #endif // BorderValue_h 108