dom/smil/SMILSetAnimationFunction.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 DOM_SMIL_SMILSETANIMATIONFUNCTION_H_
   8 #define DOM_SMIL_SMILSETANIMATIONFUNCTION_H_
   9
  10 #include "mozilla/Attributes.h"
  11 #include "mozilla/SMILAnimationFunction.h"
  12
  13 namespace mozilla {
  14
  15 //----------------------------------------------------------------------
  16 // SMILSetAnimationFunction
  17 //
  18 // Subclass of SMILAnimationFunction that limits the behaviour to that offered
  19 // by a <set> element.
  20 //
  21 class SMILSetAnimationFunction : public SMILAnimationFunction {
  22  protected:
  23   bool IsDisallowedAttribute(const nsAtom* aAttribute) const override;
  24
  25   // Although <set> animation might look like to-animation, unlike to-animation,
  26   // it never interpolates values.
  27   // Returning false here will mean this animation function gets treated as
  28   // a single-valued function and no interpolation will be attempted.
  29   bool IsToAnimation() const override { return false; }
  30
  31   // <set> applies the exact same value across the simple duration.
  32   bool IsValueFixedForSimpleDuration() const override { return true; }
  33   bool WillReplace() const override { return true; }
  34 };
  35
  36 }  // namespace mozilla
  37
  38 #endif  // DOM_SMIL_SMILSETANIMATIONFUNCTION_H_