PaintInvalidationState::PaintInvalidationState(PaintInvalidationState& next, LayoutBoxModelObject& layoutObject, const LayoutBoxModelObject& paintInvalidationContainer)
    : m_clipped(false)
    , m_cachedOffsetsEnabled(true)
    , m_forcedSubtreeInvalidationWithinContainer(next.m_forcedSubtreeInvalidationWithinContainer)
    , m_forcedSubtreeInvalidationRectUpdateWithinContainer(next.m_forcedSubtreeInvalidationRectUpdateWithinContainer)
    , m_viewClippingAndScrollOffsetDisabled(false)
    , m_paintInvalidationContainer(paintInvalidationContainer)
    , m_pendingDelayedPaintInvalidations(next.pendingDelayedPaintInvalidationTargets())
    , m_enclosingSelfPaintingLayer(next.enclosingSelfPaintingLayer(layoutObject))
{
    // FIXME: SVG could probably benefit from a stack-based optimization like html does. crbug.com/391054
    bool establishesPaintInvalidationContainer = layoutObject == m_paintInvalidationContainer;
    bool fixed = layoutObject.style()->position() == FixedPosition;

    if (!layoutObject.supportsPaintInvalidationStateCachedOffsets() || !next.m_cachedOffsetsEnabled)
        m_cachedOffsetsEnabled = false;
    if (establishesPaintInvalidationContainer) {
        // When we hit a new paint invalidation container, we don't need to
        // continue forcing a check for paint invalidation, since we're
        // descending into a different invalidation container. (For instance if
        // our parents were moved, the entire container will just move.)
        m_forcedSubtreeInvalidationWithinContainer = false;
    } else {
        if (m_cachedOffsetsEnabled) {
            if (fixed) {
                FloatPoint fixedOffset = layoutObject.localToAncestorPoint(FloatPoint(), &m_paintInvalidationContainer, TraverseDocumentBoundaries);
                m_paintOffset = LayoutSize(fixedOffset.x(), fixedOffset.y());
            } else {
                LayoutSize offset = layoutObject.isBox() && !layoutObject.isTableRow() ? toLayoutBox(layoutObject).locationOffset() : LayoutSize();
                m_paintOffset = next.m_paintOffset + offset;
            }

            if (layoutObject.isOutOfFlowPositioned() && !fixed) {
                if (LayoutObject* container = layoutObject.container()) {
                    if (container->style()->hasInFlowPosition() && container->isLayoutInline())
                        m_paintOffset += toLayoutInline(container)->offsetForInFlowPositionedInline(toLayoutBox(layoutObject));
                }
            }

            if (layoutObject.style()->hasInFlowPosition() && layoutObject.hasLayer())
                m_paintOffset += layoutObject.layer()->offsetForInFlowPosition();
        }

        m_clipped = !fixed && next.m_clipped;
        if (m_clipped)
            m_clipRect = next.m_clipRect;
    }

    if (m_cachedOffsetsEnabled && layoutObject.isSVGRoot()) {
        const LayoutSVGRoot& svgRoot = toLayoutSVGRoot(layoutObject);
        m_svgTransform = AffineTransform(svgRoot.localToBorderBoxTransform());
        if (svgRoot.shouldApplyViewportClip())
            addClipRectRelativeToPaintOffset(LayoutSize(svgRoot.pixelSnappedSize()));
    }

    applyClipIfNeeded(layoutObject);

    // FIXME: <http://bugs.webkit.org/show_bug.cgi?id=13443> Apply control clip if present.
}
PaintInvalidationState::PaintInvalidationState(PaintInvalidationState& next, const LayoutSVGModelObject& layoutObject)
    : m_clipped(next.m_clipped)
    , m_cachedOffsetsEnabled(next.m_cachedOffsetsEnabled)
    , m_ancestorHadPaintInvalidationForLocationChange(next.m_ancestorHadPaintInvalidationForLocationChange)
    , m_clipRect(next.m_clipRect)
    , m_paintOffset(next.m_paintOffset)
    , m_paintInvalidationContainer(next.m_paintInvalidationContainer)
    , m_pendingDelayedPaintInvalidations(next.pendingDelayedPaintInvalidationTargets())
{
    ASSERT(layoutObject != m_paintInvalidationContainer);

    if (m_cachedOffsetsEnabled)
        m_svgTransform = adoptPtr(new AffineTransform(next.svgTransform() * layoutObject.localToParentTransform()));
}
PaintInvalidationState::PaintInvalidationState(PaintInvalidationState& next, const LayoutSVGModelObject& layoutObject)
    : m_clipped(next.m_clipped)
    , m_cachedOffsetsEnabled(next.m_cachedOffsetsEnabled)
    , m_forcedSubtreeInvalidationWithinContainer(next.m_forcedSubtreeInvalidationWithinContainer)
    , m_forcedSubtreeInvalidationRectUpdateWithinContainer(next.m_forcedSubtreeInvalidationRectUpdateWithinContainer)
    , m_viewClippingAndScrollOffsetDisabled(false)
    , m_clipRect(next.m_clipRect)
    , m_paintOffset(next.m_paintOffset)
    , m_paintInvalidationContainer(next.m_paintInvalidationContainer)
    , m_pendingDelayedPaintInvalidations(next.pendingDelayedPaintInvalidationTargets())
{
    ASSERT(layoutObject != m_paintInvalidationContainer);

    if (m_cachedOffsetsEnabled)
        m_svgTransform = adoptPtr(new AffineTransform(next.svgTransform() * layoutObject.localToParentTransform()));
}
示例#4
0
void RenderView::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
{
    ASSERT(!needsLayout());

    // We specifically need to issue paint invalidations for the viewRect since other renderers
    // short-circuit on full-paint invalidation.
    LayoutRect dirtyRect = viewRect();
    if (doingFullPaintInvalidation() && !dirtyRect.isEmpty()) {
        const RenderLayerModelObject* paintInvalidationContainer = &paintInvalidationState.paintInvalidationContainer();
        RenderLayer::mapRectToPaintInvalidationBacking(this, paintInvalidationContainer, dirtyRect, &paintInvalidationState);
        invalidatePaintUsingContainer(paintInvalidationContainer, dirtyRect, PaintInvalidationFull);
    }
    RenderBlock::invalidateTreeIfNeeded(paintInvalidationState);
}
void RenderLayerModelObject::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
{
    ASSERT(!needsLayout());

    if (!shouldCheckForPaintInvalidation(paintInvalidationState))
        return;

    bool establishesNewPaintInvalidationContainer = isPaintInvalidationContainer();
    const RenderLayerModelObject& newPaintInvalidationContainer = *adjustCompositedContainerForSpecialAncestors(establishesNewPaintInvalidationContainer ? this : &paintInvalidationState.paintInvalidationContainer());
    ASSERT(&newPaintInvalidationContainer == containerForPaintInvalidation());

    InvalidationReason reason = invalidatePaintIfNeeded(paintInvalidationState, newPaintInvalidationContainer);
    clearPaintInvalidationState(paintInvalidationState);

    PaintInvalidationState childTreeWalkState(paintInvalidationState, *this, newPaintInvalidationContainer);
    if (reason == InvalidationLocationChange || reason == InvalidationFull)
        childTreeWalkState.setForceCheckForPaintInvalidation();
    invalidatePaintOfSubtreesIfNeeded(childTreeWalkState);
}
void RenderLayerModelObject::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
{
    ASSERT(!needsLayout());

    if (!shouldCheckForPaintInvalidation(paintInvalidationState))
        return;

    bool establishesNewPaintInvalidationContainer = isPaintInvalidationContainer();
    const RenderLayerModelObject& newPaintInvalidationContainer = *adjustCompositedContainerForSpecialAncestors(establishesNewPaintInvalidationContainer ? this : &paintInvalidationState.paintInvalidationContainer());
    // FIXME: This assert should be re-enabled when we move paint invalidation to after compositing update. crbug.com/360286
    // ASSERT(&newPaintInvalidationContainer == containerForPaintInvalidation());

    PaintInvalidationReason reason = invalidatePaintIfNeeded(paintInvalidationState, newPaintInvalidationContainer);
    clearPaintInvalidationState(paintInvalidationState);

    PaintInvalidationState childTreeWalkState(paintInvalidationState, *this, newPaintInvalidationContainer);
    if (reason == PaintInvalidationLocationChange)
        childTreeWalkState.setForceCheckForPaintInvalidation();
    invalidatePaintOfSubtreesIfNeeded(childTreeWalkState);
}