Example #1
0
void GraphicsLayerUpdater::updateRecursive(RenderLayer& layer, UpdateType updateType, const UpdateContext& context, Vector<RenderLayer*>& layersNeedingPaintInvalidation)
{
    if (layer.hasCompositedLayerMapping()) {
        CompositedLayerMapping* mapping = layer.compositedLayerMapping();

        if (updateType == ForceUpdate || mapping->needsGraphicsLayerUpdate()) {
            const RenderLayer* compositingContainer = context.compositingContainer(layer);
            ASSERT(compositingContainer == layer.enclosingLayerWithCompositedLayerMapping(ExcludeSelf));

            if (mapping->updateGraphicsLayerConfiguration())
                m_needsRebuildTree = true;

            mapping->updateGraphicsLayerGeometry(compositingContainer, context.compositingStackingContext(), layersNeedingPaintInvalidation);

            if (mapping->hasUnpositionedOverflowControlsLayers())
                layer.scrollableArea()->positionOverflowControls(IntSize());

            updateType = mapping->updateTypeForChildren(updateType);
            mapping->clearNeedsGraphicsLayerUpdate();
        }
    }

    UpdateContext childContext(context, layer);
    for (RenderLayer* child = layer.firstChild(); child; child = child->nextSibling())
        updateRecursive(*child, updateType, childContext, layersNeedingPaintInvalidation);
}