mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
e0fd75b5ab
This caused us to lose our gn check certification. :( Turns out gn check was just ignoring all the header paths it didn't understand and so gn check passing for sky wasn't meaning much. I tried to straighten out some of the mess in this CL, but its going to take several more rounds of massaging before gn check passes again. On the bright side (almost) all of our headers are absolute now. Turns out my script (attached to the bug) didn't notice ../ includes but I'll fix that in the next patch. R=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/746023002
142 lines
5.2 KiB
C++
142 lines
5.2 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "sky/engine/config.h"
|
|
#include "sky/engine/core/rendering/compositing/CompositingReasonFinder.h"
|
|
|
|
#include "gen/sky/core/CSSPropertyNames.h"
|
|
#include "sky/engine/core/dom/Document.h"
|
|
#include "sky/engine/core/frame/FrameView.h"
|
|
#include "sky/engine/core/frame/Settings.h"
|
|
#include "sky/engine/core/page/Page.h"
|
|
#include "sky/engine/core/rendering/RenderView.h"
|
|
#include "sky/engine/core/rendering/compositing/RenderLayerCompositor.h"
|
|
|
|
namespace blink {
|
|
|
|
CompositingReasonFinder::CompositingReasonFinder(RenderView& renderView)
|
|
: m_renderView(renderView)
|
|
, m_compositingTriggers(static_cast<CompositingTriggerFlags>(AllCompositingTriggers))
|
|
{
|
|
updateTriggers();
|
|
}
|
|
|
|
void CompositingReasonFinder::updateTriggers()
|
|
{
|
|
m_compositingTriggers = 0;
|
|
|
|
Settings& settings = m_renderView.document().page()->settings();
|
|
if (settings.preferCompositingToLCDTextEnabled()) {
|
|
m_compositingTriggers |= ScrollableInnerFrameTrigger;
|
|
m_compositingTriggers |= OverflowScrollTrigger;
|
|
}
|
|
}
|
|
|
|
bool CompositingReasonFinder::hasOverflowScrollTrigger() const
|
|
{
|
|
return m_compositingTriggers & OverflowScrollTrigger;
|
|
}
|
|
|
|
CompositingReasons CompositingReasonFinder::directReasons(const RenderLayer* layer) const
|
|
{
|
|
ASSERT(potentialCompositingReasonsFromStyle(layer->renderer()) == layer->potentialCompositingReasonsFromStyle());
|
|
CompositingReasons styleDeterminedDirectCompositingReasons = layer->potentialCompositingReasonsFromStyle() & CompositingReasonComboAllDirectStyleDeterminedReasons;
|
|
return styleDeterminedDirectCompositingReasons | nonStyleDeterminedDirectReasons(layer);
|
|
}
|
|
|
|
// This information doesn't appear to be incorporated into CompositingReasons.
|
|
bool CompositingReasonFinder::requiresCompositingForScrollableFrame() const
|
|
{
|
|
// FIXME(sky)
|
|
return false;
|
|
}
|
|
|
|
CompositingReasons CompositingReasonFinder::potentialCompositingReasonsFromStyle(RenderObject* renderer) const
|
|
{
|
|
CompositingReasons reasons = CompositingReasonNone;
|
|
|
|
RenderStyle* style = renderer->style();
|
|
|
|
if (requiresCompositingForTransform(renderer))
|
|
reasons |= CompositingReason3DTransform;
|
|
|
|
if (style->backfaceVisibility() == BackfaceVisibilityHidden)
|
|
reasons |= CompositingReasonBackfaceVisibilityHidden;
|
|
|
|
if (requiresCompositingForAnimation(style))
|
|
reasons |= CompositingReasonActiveAnimation;
|
|
|
|
if (style->hasWillChangeCompositingHint() && !style->subtreeWillChangeContents())
|
|
reasons |= CompositingReasonWillChangeCompositingHint;
|
|
|
|
if (style->hasInlineTransform())
|
|
reasons |= CompositingReasonInlineTransform;
|
|
|
|
if (style->transformStyle3D() == TransformStyle3DPreserve3D)
|
|
reasons |= CompositingReasonPreserve3DWith3DDescendants;
|
|
|
|
if (style->hasPerspective())
|
|
reasons |= CompositingReasonPerspectiveWith3DDescendants;
|
|
|
|
// If the implementation of createsGroup changes, we need to be aware of that in this part of code.
|
|
ASSERT((renderer->isTransparent() || renderer->hasMask() || renderer->hasFilter()) == renderer->createsGroup());
|
|
|
|
if (style->hasMask())
|
|
reasons |= CompositingReasonMaskWithCompositedDescendants;
|
|
|
|
if (style->hasFilter())
|
|
reasons |= CompositingReasonFilterWithCompositedDescendants;
|
|
|
|
// See RenderLayer::updateTransform for an explanation of why we check both.
|
|
if (renderer->hasTransform() && style->hasTransform())
|
|
reasons |= CompositingReasonTransformWithCompositedDescendants;
|
|
|
|
if (renderer->isTransparent())
|
|
reasons |= CompositingReasonOpacityWithCompositedDescendants;
|
|
|
|
ASSERT(!(reasons & ~CompositingReasonComboAllStyleDeterminedReasons));
|
|
return reasons;
|
|
}
|
|
|
|
bool CompositingReasonFinder::requiresCompositingForTransform(RenderObject* renderer) const
|
|
{
|
|
// Note that we ask the renderer if it has a transform, because the style may have transforms,
|
|
// but the renderer may be an inline that doesn't suppport them.
|
|
return renderer->hasTransform() && renderer->style()->transform().has3DOperation();
|
|
}
|
|
|
|
CompositingReasons CompositingReasonFinder::nonStyleDeterminedDirectReasons(const RenderLayer* layer) const
|
|
{
|
|
CompositingReasons directReasons = CompositingReasonNone;
|
|
RenderObject* renderer = layer->renderer();
|
|
|
|
if (hasOverflowScrollTrigger()) {
|
|
if (layer->clipParent())
|
|
directReasons |= CompositingReasonOutOfFlowClipping;
|
|
|
|
if (const RenderLayer* scrollingAncestor = layer->ancestorScrollingLayer()) {
|
|
if (scrollingAncestor->needsCompositedScrolling() && layer->scrollParent())
|
|
directReasons |= CompositingReasonOverflowScrollingParent;
|
|
}
|
|
|
|
if (layer->needsCompositedScrolling())
|
|
directReasons |= CompositingReasonOverflowScrollingTouch;
|
|
}
|
|
|
|
directReasons |= renderer->additionalCompositingReasons();
|
|
|
|
ASSERT(!(directReasons & CompositingReasonComboAllStyleDeterminedReasons));
|
|
return directReasons;
|
|
}
|
|
|
|
bool CompositingReasonFinder::requiresCompositingForAnimation(RenderStyle* style) const
|
|
{
|
|
if (style->subtreeWillChangeContents())
|
|
return style->isRunningAnimationOnCompositor();
|
|
|
|
return style->shouldCompositeForCurrentAnimations();
|
|
}
|
|
|
|
}
|