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 AnimatedPropertyIDSet;
  22 class ComputedStyle;
  23 enum class PseudoStyleType : uint8_t;
  24 }  // namespace mozilla
  25
  26 class nsTransitionManager final
  27     : public mozilla::CommonAnimationManager<mozilla::dom::CSSTransition> {
  28  public:
  29   explicit nsTransitionManager(nsPresContext* aPresContext)
  30       : mozilla::CommonAnimationManager<mozilla::dom::CSSTransition>(
  31             aPresContext) {}
  32
  33   ~nsTransitionManager() final = default;
  34
  35   typedef mozilla::AnimationCollection<mozilla::dom::CSSTransition>
  36       CSSTransitionCollection;
  37
  38   /**
  39    * Update transitions for stylo.
  40    */
  41   bool UpdateTransitions(mozilla::dom::Element* aElement,
  42                          mozilla::PseudoStyleType aPseudoType,
  43                          const mozilla::ComputedStyle& aOldStyle,
  44                          const mozilla::ComputedStyle& aNewStyle);
  45
  46  protected:
  47   typedef nsTArray<RefPtr<mozilla::dom::CSSTransition>>
  48       OwningCSSTransitionPtrArray;
  49
  50   // Update transitions. This will start new transitions,
  51   // replace existing transitions, and stop existing transitions
  52   // as needed. aDisp and aElement must be non-null.
  53   // aElementTransitions is the collection of current transitions, and it
  54   // could be a nullptr if we don't have any transitions.
  55   bool DoUpdateTransitions(const nsStyleUIReset& aStyle,
  56                            mozilla::dom::Element* aElement,
  57                            mozilla::PseudoStyleType aPseudoType,
  58                            CSSTransitionCollection*& aElementTransitions,
  59                            const mozilla::ComputedStyle& aOldStyle,
  60                            const mozilla::ComputedStyle& aNewStyle);
  61
  62   // Returns whether the transition actually started.
  63   bool ConsiderInitiatingTransition(
  64       const mozilla::AnimatedPropertyID&, const nsStyleUIReset& aStyle,
  65       uint32_t aTransitionIndex, float aDelay, float aDuration,
  66       mozilla::StyleTransitionBehavior aBehavior,
  67       mozilla::dom::Element* aElement, mozilla::PseudoStyleType aPseudoType,
  68       CSSTransitionCollection*& aElementTransitions,
  69       const mozilla::ComputedStyle& aOldStyle,
  70       const mozilla::ComputedStyle& aNewStyle,
  71       mozilla::AnimatedPropertyIDSet& aPropertiesChecked);
  72
  73   already_AddRefed<mozilla::dom::CSSTransition> DoCreateTransition(
  74       const mozilla::AnimatedPropertyID& aProperty,
  75       mozilla::dom::Element* aElement, mozilla::PseudoStyleType aPseudoType,
  76       const mozilla::ComputedStyle& aNewStyle,
  77       CSSTransitionCollection*& aElementTransitions,
  78       mozilla::TimingParams&& aTiming, mozilla::AnimationValue&& aStartValue,
  79       mozilla::AnimationValue&& aEndValue,
  80       mozilla::AnimationValue&& aStartForReversingTest, double aReversePortion);
  81
  82   void DoCancelTransition(mozilla::dom::Element* aElement,
  83                           mozilla::PseudoStyleType aPseudoType,
  84                           CSSTransitionCollection*& aElementTransitions,
  85                           size_t aIndex);
  86 };
  87
  88 #endif /* !defined(nsTransitionManager_h_) */