layout/style/StyleColorInlines.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /* Inline functions for StyleColor (aka values::computed::Color) */
   8
   9 #ifndef mozilla_StyleColorInlines_h_
  10 #define mozilla_StyleColorInlines_h_
  11
  12 #include "nsColor.h"
  13 #include "mozilla/ServoStyleConsts.h"
  14 #include "nsStyleUtil.h"
  15
  16 namespace mozilla {
  17
  18 inline StyleAbsoluteColor StyleAbsoluteColor::FromColor(nscolor aColor) {
  19   return StyleAbsoluteColor::SrgbLegacy(
  20       NS_GET_R(aColor) / 255.0f, NS_GET_G(aColor) / 255.0f,
  21       NS_GET_B(aColor) / 255.0f, NS_GET_A(aColor) / 255.0f);
  22 }
  23
  24 // static
  25 inline StyleAbsoluteColor StyleAbsoluteColor::SrgbLegacy(float red, float green,
  26                                                          float blue,
  27                                                          float alpha) {
  28   const auto ToLegacyComponent = [](float aF) {
  29     if (MOZ_UNLIKELY(!std::isfinite(aF))) {
  30       return 0.0f;
  31     }
  32     return aF;
  33   };
  34
  35   return StyleAbsoluteColor{
  36       StyleColorComponents{ToLegacyComponent(red), ToLegacyComponent(green),
  37                            ToLegacyComponent(blue)},
  38       alpha, StyleColorSpace::Srgb, StyleColorFlags::IS_LEGACY_SRGB};
  39 }
  40
  41 template <>
  42 inline StyleColor StyleColor::FromColor(nscolor aColor) {
  43   return StyleColor::Absolute(StyleAbsoluteColor::FromColor(aColor));
  44 }
  45
  46 template <>
  47 inline StyleColor StyleColor::Transparent() {
  48   return StyleColor::Absolute(StyleAbsoluteColor::TRANSPARENT_BLACK);
  49 }
  50
  51 template <>
  52 inline StyleColor StyleColor::Black() {
  53   return StyleColor::Absolute(StyleAbsoluteColor::BLACK);
  54 }
  55
  56 template <>
  57 inline StyleColor StyleColor::White() {
  58   return StyleColor::Absolute(StyleAbsoluteColor::WHITE);
  59 }
  60
  61 template <>
  62 StyleAbsoluteColor StyleColor::ResolveColor(const StyleAbsoluteColor&) const;
  63
  64 template <>
  65 nscolor StyleColor::CalcColor(const StyleAbsoluteColor&) const;
  66
  67 template <>
  68 nscolor StyleColor::CalcColor(nscolor) const;
  69
  70 template <>
  71 nscolor StyleColor::CalcColor(const ComputedStyle&) const;
  72
  73 template <>
  74 nscolor StyleColor::CalcColor(const nsIFrame*) const;
  75
  76 }  // namespace mozilla
  77
  78 #endif  // mozilla_StyleColor_h_