dom/animation/AnimationUtils.cpp

   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 #include "AnimationUtils.h"
   8
   9 #include "mozilla/dom/Animation.h"
  10 #include "mozilla/dom/Document.h"
  11 #include "mozilla/dom/KeyframeEffect.h"
  12 #include "mozilla/EffectSet.h"
  13 #include "nsDebug.h"
  14 #include "nsAtom.h"
  15 #include "nsIContent.h"
  16 #include "nsGlobalWindow.h"
  17 #include "nsString.h"
  18 #include "xpcpublic.h"  // For xpc::NativeGlobal
  19
  20 using namespace mozilla::dom;
  21
  22 namespace mozilla {
  23
  24 /* static */
  25 void AnimationUtils::LogAsyncAnimationFailure(nsCString& aMessage,
  26                                               const nsIContent* aContent) {
  27   if (aContent) {
  28     aMessage.AppendLiteral(" [");
  29     aMessage.Append(nsAtomCString(aContent->NodeInfo()->NameAtom()));
  30
  31     nsAtom* id = aContent->GetID();
  32     if (id) {
  33       aMessage.AppendLiteral(" with id '");
  34       aMessage.Append(nsAtomCString(aContent->GetID()));
  35       aMessage.Append('\'');
  36     }
  37     aMessage.Append(']');
  38   }
  39   aMessage.Append('\n');
  40   printf_stderr("%s", aMessage.get());
  41 }
  42
  43 /* static */
  44 Document* AnimationUtils::GetCurrentRealmDocument(JSContext* aCx) {
  45   nsGlobalWindowInner* win = xpc::CurrentWindowOrNull(aCx);
  46   if (!win) {
  47     return nullptr;
  48   }
  49   return win->GetDoc();
  50 }
  51
  52 /* static */
  53 Document* AnimationUtils::GetDocumentFromGlobal(JSObject* aGlobalObject) {
  54   nsGlobalWindowInner* win = xpc::WindowOrNull(aGlobalObject);
  55   if (!win) {
  56     return nullptr;
  57   }
  58   return win->GetDoc();
  59 }
  60
  61 /* static */
  62 bool AnimationUtils::FrameHasAnimatedScale(const nsIFrame* aFrame) {
  63   EffectSet* effectSet = EffectSet::GetEffectSetForFrame(
  64       aFrame, nsCSSPropertyIDSet::TransformLikeProperties());
  65   if (!effectSet) {
  66     return false;
  67   }
  68
  69   for (const dom::KeyframeEffect* effect : *effectSet) {
  70     if (effect->ContainsAnimatedScale(aFrame)) {
  71       return true;
  72     }
  73   }
  74
  75   return false;
  76 }
  77
  78 /* static */
  79 bool AnimationUtils::HasCurrentTransitions(const Element* aElement,
  80                                            PseudoStyleType aPseudoType) {
  81   MOZ_ASSERT(aElement);
  82
  83   EffectSet* effectSet = EffectSet::GetEffectSet(aElement, aPseudoType);
  84   if (!effectSet) {
  85     return false;
  86   }
  87
  88   for (const dom::KeyframeEffect* effect : *effectSet) {
  89     // If |effect| is current, it must have an associated Animation
  90     // so we don't need to null-check the result of GetAnimation().
  91     if (effect->IsCurrent() && effect->GetAnimation()->AsCSSTransition()) {
  92       return true;
  93     }
  94   }
  95
  96   return false;
  97 }
  98
  99 }  // namespace mozilla