layout/style/nsTimingFunction.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 #ifndef nsTimingFunction_h
   8 #define nsTimingFunction_h
   9
  10 #include "mozilla/ServoStyleConsts.h"
  11
  12 struct nsTimingFunction {
  13   mozilla::StyleComputedTimingFunction mTiming;
  14
  15   explicit nsTimingFunction(
  16       mozilla::StyleTimingKeyword aKeyword = mozilla::StyleTimingKeyword::Ease)
  17       : mTiming(mozilla::StyleComputedTimingFunction::Keyword(aKeyword)) {}
  18
  19   nsTimingFunction(float x1, float y1, float x2, float y2)
  20       : mTiming(mozilla::StyleComputedTimingFunction::CubicBezier(x1, y1, x2,
  21                                                                   y2)) {}
  22
  23   bool IsLinear() const {
  24     return mTiming.IsKeyword() &&
  25            mTiming.AsKeyword() == mozilla::StyleTimingKeyword::Linear;
  26   }
  27
  28   bool operator==(const nsTimingFunction& aOther) const {
  29     return mTiming == aOther.mTiming;
  30   }
  31
  32   bool operator!=(const nsTimingFunction& aOther) const {
  33     return !(*this == aOther);
  34   }
  35 };
  36
  37 #endif  // nsTimingFunction_h