layout/style/nsTransitionManager.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 /* Code to start and animate CSS transitions. */
   8
   9 #ifndef nsTransitionManager_h_
  10 #define nsTransitionManager_h_
  11
  12 #include "mozilla/dom/CSSTransition.h"
  13 #include "AnimationCommon.h"
  14 #include "nsISupportsImpl.h"
  15
  16 class nsPresContext;
  17 class nsCSSPropertyIDSet;
  18 struct nsStyleUIReset;
  19
  20 namespace mozilla {
  21 class ComputedStyle;
  22 enum class PseudoStyleType : uint8_t;
  23 }  // namespace mozilla
  24
  25 class nsTransitionManager final
  26     : public mozilla::CommonAnimationManager<mozilla::dom::CSSTransition> {
  27  public:
  28   explicit nsTransitionManager(nsPresContext* aPresContext)
  29       : mozilla::CommonAnimationManager<mozilla::dom::CSSTransition>(
  30             aPresContext) {}
  31
  32   ~nsTransitionManager() final = default;
  33
  34   typedef mozilla::AnimationCollection<mozilla::dom::CSSTransition>
  35       CSSTransitionCollection;
  36
  37   /**
  38    * Update transitions for stylo.
  39    */
  40   bool UpdateTransitions(mozilla::dom::Element* aElement,
  41                          mozilla::PseudoStyleType aPseudoType,
  42                          const mozilla::ComputedStyle& aOldStyle,
  43                          const mozilla::ComputedStyle& aNewStyle);
  44
  45  protected:
  46   typedef nsTArray<RefPtr<mozilla::dom::CSSTransition>>
  47       OwningCSSTransitionPtrArray;
  48
  49   // Update transitions. This will start new transitions,
  50   // replace existing transitions, and stop existing transitions
  51   // as needed. aDisp and aElement must be non-null.
  52   // aElementTransitions is the collection of current transitions, and it
  53   // could be a nullptr if we don't have any transitions.
  54   bool DoUpdateTransitions(const nsStyleUIReset& aStyle,
  55                            mozilla::dom::Element* aElement,
  56                            mozilla::PseudoStyleType aPseudoType,
  57                            CSSTransitionCollection*& aElementTransitions,
  58                            const mozilla::ComputedStyle& aOldStyle,
  59                            const mozilla::ComputedStyle& aNewStyle);
  60
  61   // Returns whether the transition actually started.
  62   bool ConsiderInitiatingTransition(
  63       nsCSSPropertyID aProperty, const nsStyleUIReset& aStyle,
  64       uint32_t transitionIdx, mozilla::dom::Element* aElement,
  65       mozilla::PseudoStyleType aPseudoType,
  66       CSSTransitionCollection*& aElementTransitions,
  67       const mozilla::ComputedStyle& aOldStyle,
  68       const mozilla::ComputedStyle& aNewStyle,
  69       nsCSSPropertyIDSet& aPropertiesChecked);
  70
  71   already_AddRefed<mozilla::dom::CSSTransition> DoCreateTransition(
  72       nsCSSPropertyID aProperty, mozilla::dom::Element* aElement,
  73       mozilla::PseudoStyleType aPseudoType,
  74       const mozilla::ComputedStyle& aNewStyle,
  75       CSSTransitionCollection*& aElementTransitions,
  76       mozilla::TimingParams&& aTiming, mozilla::AnimationValue&& aStartValue,
  77       mozilla::AnimationValue&& aEndValue,
  78       mozilla::AnimationValue&& aStartForReversingTest, double aReversePortion);
  79
  80   void DoCancelTransition(mozilla::dom::Element* aElement,
  81                           mozilla::PseudoStyleType aPseudoType,
  82                           CSSTransitionCollection*& aElementTransitions,
  83                           size_t aIndex);
  84 };
  85
  86 #endif /* !defined(nsTransitionManager_h_) */