TEST_F(ScrollingCoordinatorTest, fastFractionalScrollingDiv) { registerMockedHttpURLLoad("fractional-scroll-div.html"); navigateTo(m_baseURL + "fractional-scroll-div.html"); forceFullCompositingUpdate(); Document* document = frame()->document(); Element* scrollableElement = document->getElementById("scroller"); ASSERT(scrollableElement); scrollableElement->setScrollTop(1.0); scrollableElement->setScrollLeft(1.0); forceFullCompositingUpdate(); // Make sure the fractional scroll offset change 1.0 -> 1.2 gets propagated // to compositor. scrollableElement->setScrollTop(1.2); scrollableElement->setScrollLeft(1.2); forceFullCompositingUpdate(); LayoutObject* layoutObject = scrollableElement->layoutObject(); ASSERT_TRUE(layoutObject->isBox()); LayoutBox* box = toLayoutBox(layoutObject); ASSERT_TRUE(box->usesCompositedScrolling()); CompositedLayerMapping* compositedLayerMapping = box->layer()->compositedLayerMapping(); ASSERT_TRUE(compositedLayerMapping->hasScrollingLayer()); ASSERT(compositedLayerMapping->scrollingContentsLayer()); WebLayer* webScrollLayer = compositedLayerMapping->scrollingContentsLayer()->platformLayer(); ASSERT_TRUE(webScrollLayer); ASSERT_NEAR(1.2, webScrollLayer->scrollPositionDouble().x, 0.01); ASSERT_NEAR(1.2, webScrollLayer->scrollPositionDouble().y, 0.01); }
TEST_F(ScrollingCoordinatorTest, fractionalScrollingNonLayerFixedPosition) { registerMockedHttpURLLoad("fractional-scroll-fixed-position.html"); navigateTo(m_baseURL + "fractional-scroll-fixed-position.html"); // Prevent fixed-position element from getting its own layer. webViewImpl()->settings()->setPreferCompositingToLCDTextEnabled(false); forceFullCompositingUpdate(); FrameView* frameView = frame()->view(); frameView->scrollTo(DoublePoint(1.5, 1.5)); WebLayer* rootScrollLayer = getRootScrollLayer(); // Scroll on main if there is non-composited fixed position element. // And the containing scroll layer should not get fractional scroll offset. ASSERT_TRUE(rootScrollLayer->shouldScrollOnMainThread()); ASSERT_EQ(1.0, rootScrollLayer->scrollPositionDouble().x); ASSERT_EQ(1.0, rootScrollLayer->scrollPositionDouble().y); ASSERT_EQ(0.0, rootScrollLayer->position().x); ASSERT_EQ(0.0, rootScrollLayer->position().y); }
TEST_F(ScrollingCoordinatorTest, rtlIframe) { registerMockedHttpURLLoad("rtl-iframe.html"); registerMockedHttpURLLoad("rtl-iframe-inner.html"); navigateTo(m_baseURL + "rtl-iframe.html"); forceFullCompositingUpdate(); // Verify the properties of the accelerated scrolling element starting from the LayoutObject // all the way to the WebLayer. Element* scrollableFrame = frame()->document()->getElementById("scrollable"); ASSERT_TRUE(scrollableFrame); LayoutObject* layoutObject = scrollableFrame->layoutObject(); ASSERT_TRUE(layoutObject); ASSERT_TRUE(layoutObject->isLayoutPart()); LayoutPart* layoutPart = toLayoutPart(layoutObject); ASSERT_TRUE(layoutPart); ASSERT_TRUE(layoutPart->widget()); ASSERT_TRUE(layoutPart->widget()->isFrameView()); FrameView* innerFrameView = toFrameView(layoutPart->widget()); LayoutView* innerLayoutView = innerFrameView->layoutView(); ASSERT_TRUE(innerLayoutView); PaintLayerCompositor* innerCompositor = innerLayoutView->compositor(); ASSERT_TRUE(innerCompositor->inCompositingMode()); ASSERT_TRUE(innerCompositor->scrollLayer()); GraphicsLayer* scrollLayer = innerCompositor->scrollLayer(); ASSERT_EQ(innerFrameView, scrollLayer->scrollableArea()); WebLayer* webScrollLayer = scrollLayer->platformLayer(); ASSERT_TRUE(webScrollLayer->scrollable()); int expectedScrollPosition = 958 + (innerFrameView->verticalScrollbar()->isOverlayScrollbar() ? 0 : 15); ASSERT_EQ(expectedScrollPosition, webScrollLayer->scrollPositionDouble().x); }