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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "config.h"
      6 #include "core/page/PageAnimator.h"
      7 
      8 #include "core/animation/DocumentAnimations.h"
      9 #include "core/frame/FrameView.h"
     10 #include "core/frame/LocalFrame.h"
     11 #include "core/page/Chrome.h"
     12 #include "core/page/ChromeClient.h"
     13 #include "core/page/Page.h"
     14 #include "core/svg/SVGDocumentExtensions.h"
     15 #include "platform/Logging.h"
     16 
     17 namespace blink {
     18 
     19 PageAnimator::PageAnimator(Page& page)
     20     : m_page(page)
     21     , m_animationFramePending(false)
     22     , m_servicingAnimations(false)
     23     , m_updatingLayoutAndStyleForPainting(false)
     24 {
     25 }
     26 
     27 PassRefPtrWillBeRawPtr<PageAnimator> PageAnimator::create(Page& page)
     28 {
     29     return adoptRefWillBeNoop(new PageAnimator(page));
     30 }
     31 
     32 void PageAnimator::trace(Visitor* visitor)
     33 {
     34     visitor->trace(m_page);
     35 }
     36 
     37 void PageAnimator::serviceScriptedAnimations(double monotonicAnimationStartTime)
     38 {
     39     RefPtrWillBeRawPtr<PageAnimator> protector(this);
     40     m_animationFramePending = false;
     41     TemporaryChange<bool> servicing(m_servicingAnimations, true);
     42 
     43     WillBeHeapVector<RefPtrWillBeMember<Document> > documents;
     44     for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
     45         if (frame->isLocalFrame())
     46             documents.append(toLocalFrame(frame)->document());
     47     }
     48 
     49     for (size_t i = 0; i < documents.size(); ++i) {
     50         if (documents[i]->frame()) {
     51             documents[i]->view()->serviceScrollAnimations(monotonicAnimationStartTime);
     52 
     53             if (const FrameView::ScrollableAreaSet* scrollableAreas = documents[i]->view()->scrollableAreas()) {
     54                 for (FrameView::ScrollableAreaSet::iterator it = scrollableAreas->begin(); it != scrollableAreas->end(); ++it)
     55                     (*it)->serviceScrollAnimations(monotonicAnimationStartTime);
     56             }
     57         }
     58     }
     59 
     60     for (size_t i = 0; i < documents.size(); ++i) {
     61         DocumentAnimations::updateAnimationTimingForAnimationFrame(*documents[i], monotonicAnimationStartTime);
     62         SVGDocumentExtensions::serviceOnAnimationFrame(*documents[i], monotonicAnimationStartTime);
     63     }
     64 
     65     for (size_t i = 0; i < documents.size(); ++i)
     66         documents[i]->serviceScriptedAnimations(monotonicAnimationStartTime);
     67 }
     68 
     69 void PageAnimator::scheduleVisualUpdate()
     70 {
     71     // FIXME: also include m_animationFramePending here. It is currently not there due to crbug.com/353756.
     72     if (m_servicingAnimations || m_updatingLayoutAndStyleForPainting)
     73         return;
     74     m_page->chrome().scheduleAnimation();
     75 }
     76 
     77 void PageAnimator::updateLayoutAndStyleForPainting(LocalFrame* rootFrame)
     78 {
     79     RefPtr<FrameView> view = rootFrame->view();
     80 
     81     TemporaryChange<bool> servicing(m_updatingLayoutAndStyleForPainting, true);
     82 
     83     // In order for our child HWNDs (NativeWindowWidgets) to update properly,
     84     // they need to be told that we are updating the screen. The problem is that
     85     // the native widgets need to recalculate their clip region and not overlap
     86     // any of our non-native widgets. To force the resizing, call
     87     // setFrameRect(). This will be a quick operation for most frames, but the
     88     // NativeWindowWidgets will update a proper clipping region.
     89     view->setFrameRect(view->frameRect());
     90 
     91     // setFrameRect may have the side-effect of causing existing page layout to
     92     // be invalidated, so layout needs to be called last.
     93     view->updateLayoutAndStyleForPainting();
     94 }
     95 
     96 }
     97