void AccessibilityObject::scrollToMakeVisibleWithSubFocus(const IntRect& subfocus) const
{
// Search up the parent chain until we find the first one that's scrollable.
AccessibilityObject* scrollParent = parentObject();
ScrollableArea* scrollableArea;
for (scrollableArea = 0;
scrollParent && !(scrollableArea = scrollParent->getScrollableAreaIfScrollable());
scrollParent = scrollParent->parentObject()) { }
if (!scrollableArea)
return;
LayoutRect objectRect = elementRect();
IntPoint scrollPosition = scrollableArea->scrollPosition();
IntRect scrollVisibleRect = scrollableArea->visibleContentRect();
int desiredX = computeBestScrollOffset(
scrollPosition.x(),
objectRect.x() + subfocus.x(), objectRect.x() + subfocus.maxX(),
objectRect.x(), objectRect.maxX(),
0, scrollVisibleRect.width());
int desiredY = computeBestScrollOffset(
scrollPosition.y(),
objectRect.y() + subfocus.y(), objectRect.y() + subfocus.maxY(),
objectRect.y(), objectRect.maxY(),
0, scrollVisibleRect.height());
scrollParent->scrollTo(IntPoint(desiredX, desiredY));
// Recursively make sure the scroll parent itself is visible.
if (scrollParent->parentObject())
scrollParent->scrollToMakeVisible();
}
void AccessibilityObject::scrollToGlobalPoint(const IntPoint& globalPoint) const
{
// Search up the parent chain and create a vector of all scrollable parent objects
// and ending with this object itself.
Vector<const AccessibilityObject*> objects;
AccessibilityObject* parentObject;
for (parentObject = this->parentObject(); parentObject; parentObject = parentObject->parentObject()) {
if (parentObject->getScrollableAreaIfScrollable())
objects.prepend(parentObject);
}
objects.append(this);
// Start with the outermost scrollable (the main window) and try to scroll the
// next innermost object to the given point.
int offsetX = 0, offsetY = 0;
IntPoint point = globalPoint;
size_t levels = objects.size() - 1;
for (size_t i = 0; i < levels; i++) {
const AccessibilityObject* outer = objects[i];
const AccessibilityObject* inner = objects[i + 1];
ScrollableArea* scrollableArea = outer->getScrollableAreaIfScrollable();
LayoutRect innerRect = inner->isAccessibilityScrollView() ? inner->parentObject()->elementRect() : inner->elementRect();
LayoutRect objectRect = innerRect;
IntPoint scrollPosition = scrollableArea->scrollPosition();
// Convert the object rect into local coordinates.
objectRect.move(offsetX, offsetY);
if (!outer->isAccessibilityScrollView())
objectRect.move(scrollPosition.x(), scrollPosition.y());
int desiredX = computeBestScrollOffset(
0,
objectRect.x(), objectRect.maxX(),
objectRect.x(), objectRect.maxX(),
point.x(), point.x());
int desiredY = computeBestScrollOffset(
0,
objectRect.y(), objectRect.maxY(),
objectRect.y(), objectRect.maxY(),
point.y(), point.y());
outer->scrollTo(IntPoint(desiredX, desiredY));
if (outer->isAccessibilityScrollView() && !inner->isAccessibilityScrollView()) {
// If outer object we just scrolled is a scroll view (main window or iframe) but the
// inner object is not, keep track of the coordinate transformation to apply to
// future nested calculations.
scrollPosition = scrollableArea->scrollPosition();
offsetX -= (scrollPosition.x() + point.x());
offsetY -= (scrollPosition.y() + point.y());
point.move(scrollPosition.x() - innerRect.x(),
scrollPosition.y() - innerRect.y());
} else if (inner->isAccessibilityScrollView()) {
// Otherwise, if the inner object is a scroll view, reset the coordinate transformation.
offsetX = 0;
offsetY = 0;
}
}
}
void FocusController::setContainingWindowIsVisible(bool containingWindowIsVisible)
{
if (m_containingWindowIsVisible == containingWindowIsVisible)
return;
m_containingWindowIsVisible = containingWindowIsVisible;
FrameView* view = m_page->mainFrame()->view();
if (!view)
return;
contentAreaDidShowOrHide(view, containingWindowIsVisible);
for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree()->traverseNext()) {
FrameView* frameView = frame->view();
if (!frameView)
continue;
const HashSet<ScrollableArea*>* scrollableAreas = frameView->scrollableAreas();
if (!scrollableAreas)
continue;
for (HashSet<ScrollableArea*>::const_iterator it = scrollableAreas->begin(), end = scrollableAreas->end(); it != end; ++it) {
ScrollableArea* scrollableArea = *it;
ASSERT(scrollableArea->scrollbarsCanBeActive() || m_page->shouldSuppressScrollbarAnimations());
contentAreaDidShowOrHide(scrollableArea, containingWindowIsVisible);
}
}
}
IntPoint AXObject::maximumScrollOffset() const
{
ScrollableArea* area = getScrollableAreaIfScrollable();
if (!area)
return IntPoint();
return IntPoint(area->maximumScrollPosition().x(), area->maximumScrollPosition().y());
}
InRegionScrollableArea::InRegionScrollableArea(WebPagePrivate* webPage, RenderLayer* layer)
: m_webPage(webPage)
, m_layer(layer)
{
ASSERT(webPage);
ASSERT(layer);
m_isNull = false;
// FIXME: Add an ASSERT here as the 'layer' must be scrollable.
RenderObject* layerRenderer = layer->renderer();
ASSERT(layerRenderer);
if (layerRenderer->isRenderView()) { // #document case
FrameView* view = toRenderView(layerRenderer)->frameView();
ASSERT(view);
Frame* frame = view->frame();
ASSERT_UNUSED(frame, frame);
m_scrollPosition = m_webPage->mapToTransformed(view->scrollPosition());
m_contentsSize = m_webPage->mapToTransformed(view->contentsSize());
m_viewportSize = m_webPage->mapToTransformed(view->visibleContentRect(false /*includeScrollbars*/)).size();
m_visibleWindowRect = m_webPage->mapToTransformed(m_webPage->getRecursiveVisibleWindowRect(view));
IntRect transformedWindowRect = IntRect(IntPoint::zero(), m_webPage->transformedViewportSize());
m_visibleWindowRect.intersect(transformedWindowRect);
m_scrollsHorizontally = view->contentsWidth() > view->visibleWidth();
m_scrollsVertically = view->contentsHeight() > view->visibleHeight();
m_overscrollLimitFactor = 0.0; // FIXME eventually support overscroll
} else { // RenderBox-based elements case (scrollable boxes (div's, p's, textarea's, etc)).
RenderBox* box = m_layer->renderBox();
ASSERT(box);
ASSERT(box->canBeScrolledAndHasScrollableArea());
ScrollableArea* scrollableArea = static_cast<ScrollableArea*>(m_layer);
m_scrollPosition = m_webPage->mapToTransformed(scrollableArea->scrollPosition());
m_contentsSize = m_webPage->mapToTransformed(scrollableArea->contentsSize());
m_viewportSize = m_webPage->mapToTransformed(scrollableArea->visibleContentRect(false /*includeScrollbars*/)).size();
m_visibleWindowRect = m_layer->renderer()->absoluteClippedOverflowRect();
m_visibleWindowRect = m_layer->renderer()->frame()->view()->contentsToWindow(m_visibleWindowRect);
IntRect visibleFrameWindowRect = m_webPage->getRecursiveVisibleWindowRect(m_layer->renderer()->frame()->view());
m_visibleWindowRect.intersect(visibleFrameWindowRect);
m_visibleWindowRect = m_webPage->mapToTransformed(m_visibleWindowRect);
IntRect transformedWindowRect = IntRect(IntPoint::zero(), m_webPage->transformedViewportSize());
m_visibleWindowRect.intersect(transformedWindowRect);
m_scrollsHorizontally = box->scrollWidth() != box->clientWidth() && box->scrollsOverflowX();
m_scrollsVertically = box->scrollHeight() != box->clientHeight() && box->scrollsOverflowY();
m_overscrollLimitFactor = 0.0; // FIXME eventually support overscroll
}
}
void AXObject::setScrollOffset(const IntPoint& offset) const
{
ScrollableArea* area = getScrollableAreaIfScrollable();
if (!area)
return;
// TODO(bokan): This should potentially be a UserScroll.
area->setScrollPosition(DoublePoint(offset.x(), offset.y()), ProgrammaticScroll);
}
Region ScrollingCoordinator::computeNonFastScrollableRegion(const Frame* frame, const IntPoint& frameLocation) const
{
#if ENABLE(IOS_TOUCH_EVENTS)
// On iOS, we use nonFastScrollableRegion to represent the region covered by elements with touch event handlers.
ASSERT(frame->isMainFrame());
UNUSED_PARAM(frameLocation);
Document* document = frame->document();
if (!document)
return Region();
Vector<IntRect> touchRects;
document->getTouchRects(touchRects);
Region touchRegion;
for (const auto& rect : touchRects)
touchRegion.unite(rect);
return touchRegion;
#else
Region nonFastScrollableRegion;
FrameView* frameView = frame->view();
if (!frameView)
return nonFastScrollableRegion;
IntPoint offset = frameLocation;
offset.moveBy(frameView->frameRect().location());
offset.move(0, frameView->topContentInset());
if (const FrameView::ScrollableAreaSet* scrollableAreas = frameView->scrollableAreas()) {
for (FrameView::ScrollableAreaSet::const_iterator it = scrollableAreas->begin(), end = scrollableAreas->end(); it != end; ++it) {
ScrollableArea* scrollableArea = *it;
// Composited scrollable areas can be scrolled off the main thread.
if (scrollableArea->usesCompositedScrolling())
continue;
IntRect box = scrollableArea->scrollableAreaBoundingBox();
box.moveBy(offset);
nonFastScrollableRegion.unite(box);
}
}
for (const auto& child : frameView->children()) {
if (!child->isPluginViewBase())
continue;
PluginViewBase* pluginViewBase = toPluginViewBase(child.get());
if (pluginViewBase->wantsWheelEvents())
nonFastScrollableRegion.unite(pluginViewBase->frameRect());
}
for (Frame* subframe = frame->tree().firstChild(); subframe; subframe = subframe->tree().nextSibling())
nonFastScrollableRegion.unite(computeNonFastScrollableRegion(subframe, offset));
return nonFastScrollableRegion;
#endif
}
ScrollAnimatorNone::ScrollAnimatorNone(ScrollableArea& scrollableArea)
: ScrollAnimator(scrollableArea)
, m_horizontalData(this, &m_currentPosX, scrollableArea.visibleWidth())
, m_verticalData(this, &m_currentPosY, scrollableArea.visibleHeight())
, m_startTime(0)
#if USE(REQUEST_ANIMATION_FRAME_TIMER)
, m_animationTimer(*this, &ScrollAnimatorNone::requestAnimationTimerFired)
#else
, m_animationActive(false)
#endif
{
}
void AsyncScrollingCoordinator::scrollableAreaScrollbarLayerDidChange(ScrollableArea& scrollableArea, ScrollbarOrientation orientation)
{
ASSERT(isMainThread());
ASSERT(m_page);
if (&scrollableArea != static_cast<ScrollableArea*>(m_page->mainFrame().view()))
return;
if (orientation == VerticalScrollbar)
scrollableArea.verticalScrollbarLayerDidChange();
else
scrollableArea.horizontalScrollbarLayerDidChange();
}
void AXObject::scrollToMakeVisibleWithSubFocus(const IntRect& subfocus) const
{
// Search up the parent chain until we find the first one that's scrollable.
AXObject* scrollParent = parentObject();
ScrollableArea* scrollableArea = 0;
while (scrollParent) {
scrollableArea = scrollParent->getScrollableAreaIfScrollable();
if (scrollableArea && !scrollParent->isAXScrollView())
break;
scrollParent = scrollParent->parentObject();
}
if (!scrollParent || !scrollableArea)
return;
IntRect objectRect = pixelSnappedIntRect(elementRect());
IntPoint scrollPosition = scrollableArea->scrollPosition();
IntRect scrollVisibleRect = scrollableArea->visibleContentRect();
// Convert the object rect into local coordinates.
if (!scrollParent->isWebArea()) {
objectRect.moveBy(scrollPosition);
objectRect.moveBy(-pixelSnappedIntRect(scrollParent->elementRect()).location());
}
int desiredX = computeBestScrollOffset(
scrollPosition.x(),
objectRect.x() + subfocus.x(), objectRect.x() + subfocus.maxX(),
objectRect.x(), objectRect.maxX(),
0, scrollVisibleRect.width());
int desiredY = computeBestScrollOffset(
scrollPosition.y(),
objectRect.y() + subfocus.y(), objectRect.y() + subfocus.maxY(),
objectRect.y(), objectRect.maxY(),
0, scrollVisibleRect.height());
scrollParent->setScrollOffset(IntPoint(desiredX, desiredY));
// Convert the subfocus into the coordinates of the scroll parent.
IntRect newSubfocus = subfocus;
IntRect newElementRect = pixelSnappedIntRect(elementRect());
IntRect scrollParentRect = pixelSnappedIntRect(scrollParent->elementRect());
newSubfocus.move(newElementRect.x(), newElementRect.y());
newSubfocus.move(-scrollParentRect.x(), -scrollParentRect.y());
// Recursively make sure the scroll parent itself is visible.
if (scrollParent->parentObject())
scrollParent->scrollToMakeVisibleWithSubFocus(newSubfocus);
}
GraphicsLayer* TopDocumentRootScrollerController::rootScrollerLayer() const {
if (!m_globalRootScroller)
return nullptr;
ScrollableArea* area =
RootScrollerUtil::scrollableAreaFor(*m_globalRootScroller);
if (!area)
return nullptr;
GraphicsLayer* graphicsLayer = area->layerForScrolling();
// TODO(bokan): We should assert graphicsLayer here and
// RootScrollerController should do whatever needs to happen to ensure
// the root scroller gets composited.
return graphicsLayer;
}
// Tests that scrolls on the root frame scroll the visual viewport before
// trying to scroll the layout viewport.
TEST_F(RootFrameViewportTest, ViewportScrollOrder) {
IntSize viewportSize(100, 100);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(200, 300));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
visualViewport->setScale(2);
rootFrameViewport->setScrollOffset(ScrollOffset(40, 40), UserScroll);
EXPECT_SIZE_EQ(ScrollOffset(40, 40), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
rootFrameViewport->setScrollOffset(ScrollOffset(60, 60), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(50, 50), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(10, 10), layoutViewport->getScrollOffset());
}
Region ScrollingCoordinator::computeNonFastScrollableRegion(Frame* frame, const IntPoint& frameLocation)
{
Region nonFastScrollableRegion;
FrameView* frameView = frame->view();
if (!frameView)
return nonFastScrollableRegion;
IntPoint offset = frameLocation;
offset.moveBy(frameView->frameRect().location());
if (const FrameView::ScrollableAreaSet* scrollableAreas = frameView->scrollableAreas()) {
for (FrameView::ScrollableAreaSet::const_iterator it = scrollableAreas->begin(), end = scrollableAreas->end(); it != end; ++it) {
ScrollableArea* scrollableArea = *it;
#if USE(ACCELERATED_COMPOSITING)
// Composited scrollable areas can be scrolled off the main thread.
if (scrollableArea->usesCompositedScrolling())
continue;
#endif
IntRect box = scrollableArea->scrollableAreaBoundingBox();
box.moveBy(offset);
nonFastScrollableRegion.unite(box);
}
}
if (const HashSet<RefPtr<Widget> >* children = frameView->children()) {
for (HashSet<RefPtr<Widget> >::const_iterator it = children->begin(), end = children->end(); it != end; ++it) {
if (!(*it)->isPluginViewBase())
continue;
PluginViewBase* pluginViewBase = static_cast<PluginViewBase*>((*it).get());
if (pluginViewBase->wantsWheelEvents())
nonFastScrollableRegion.unite(pluginViewBase->frameRect());
}
}
FrameTree* tree = frame->tree();
for (Frame* subFrame = tree->firstChild(); subFrame; subFrame = subFrame->tree()->nextSibling())
nonFastScrollableRegion.unite(computeNonFastScrollableRegion(subFrame, offset));
return nonFastScrollableRegion;
}
static Region computeNonFastScrollableRegion(FrameView* frameView)
{
Region nonFastScrollableRegion;
HashSet<FrameView*> childFrameViews;
for (HashSet<RefPtr<Widget> >::const_iterator it = frameView->children()->begin(), end = frameView->children()->end(); it != end; ++it) {
if ((*it)->isFrameView())
childFrameViews.add(static_cast<FrameView*>(it->get()));
}
if (const FrameView::ScrollableAreaSet* scrollableAreas = frameView->scrollableAreas()) {
for (FrameView::ScrollableAreaSet::const_iterator it = scrollableAreas->begin(), end = scrollableAreas->end(); it != end; ++it) {
ScrollableArea* scrollableArea = *it;
// Check if this area can be scrolled at all.
// If this scrollable area is a frame view that itself has scrollable areas, then we need to add it to the region.
if ((!scrollableArea->horizontalScrollbar() || !scrollableArea->horizontalScrollbar()->enabled())
&& (!scrollableArea->verticalScrollbar() || !scrollableArea->verticalScrollbar()->enabled())
&& (!childFrameViews.contains(static_cast<FrameView*>(scrollableArea)) || !static_cast<FrameView*>(scrollableArea)->scrollableAreas()))
continue;
nonFastScrollableRegion.unite(scrollableArea->scrollableAreaBoundingBox());
}
}
return nonFastScrollableRegion;
}
void Page::setShouldSuppressScrollbarAnimations(bool suppressAnimations)
{
if (suppressAnimations == m_suppressScrollbarAnimations)
return;
if (!suppressAnimations) {
// If animations are not going to be suppressed anymore, then there is nothing to do here but
// change the cached value.
m_suppressScrollbarAnimations = suppressAnimations;
return;
}
// On the other hand, if we are going to start suppressing animations, then we need to make sure we
// finish any current scroll animations first.
FrameView* view = mainFrame()->view();
if (!view)
return;
view->finishCurrentScrollAnimations();
for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
FrameView* frameView = frame->view();
if (!frameView)
continue;
const HashSet<ScrollableArea*>* scrollableAreas = frameView->scrollableAreas();
if (!scrollableAreas)
continue;
for (HashSet<ScrollableArea*>::const_iterator it = scrollableAreas->begin(), end = scrollableAreas->end(); it != end; ++it) {
ScrollableArea* scrollableArea = *it;
ASSERT(scrollableArea->scrollbarsCanBeActive());
scrollableArea->finishCurrentScrollAnimations();
}
}
m_suppressScrollbarAnimations = suppressAnimations;
}
// Tests that the setScrollOffset method works correctly with both viewports.
TEST_F(RootFrameViewportTest, SetScrollOffset) {
IntSize viewportSize(500, 500);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(1000, 2000));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
visualViewport->setScale(2);
// Ensure that the visual viewport scrolls first.
rootFrameViewport->setScrollOffset(ScrollOffset(100, 100),
ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(100, 100), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
// Scroll to the visual viewport's extent, the layout viewport should scroll
// the remainder.
rootFrameViewport->setScrollOffset(ScrollOffset(300, 400),
ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(250, 250), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 150), layoutViewport->getScrollOffset());
// Only the layout viewport should scroll further. Make sure it doesn't scroll
// out of bounds.
rootFrameViewport->setScrollOffset(ScrollOffset(780, 1780),
ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(250, 250), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(500, 1500), layoutViewport->getScrollOffset());
// Scroll all the way back.
rootFrameViewport->setScrollOffset(ScrollOffset(0, 0), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(0, 0), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
}
void updateSnapOffsetsForScrollableArea(ScrollableArea& scrollableArea, HTMLElement& scrollingElement, const RenderBox& scrollingElementBox, const RenderStyle& scrollingElementStyle)
{
if (scrollingElementStyle.scrollSnapType() == ScrollSnapType::None) {
scrollableArea.clearHorizontalSnapOffsets();
scrollableArea.clearVerticalSnapOffsets();
return;
}
LayoutUnit viewWidth = scrollingElementBox.width();
LayoutUnit viewHeight = scrollingElementBox.height();
LayoutUnit scrollWidth = scrollingElementBox.scrollWidth();
LayoutUnit scrollHeight = scrollingElementBox.scrollHeight();
bool canComputeHorizontalOffsets = scrollWidth > 0 && viewWidth > 0 && viewWidth < scrollWidth;
bool canComputeVerticalOffsets = scrollHeight > 0 && viewHeight > 0 && viewHeight < scrollHeight;
if (!canComputeHorizontalOffsets)
scrollableArea.clearHorizontalSnapOffsets();
if (!canComputeVerticalOffsets)
scrollableArea.clearVerticalSnapOffsets();
if (!canComputeHorizontalOffsets && !canComputeVerticalOffsets)
return;
Vector<LayoutUnit> horizontalSnapOffsetSubsequence;
Vector<LayoutUnit> verticalSnapOffsetSubsequence;
bool scrollSnapPointsXUsesElements = styleUsesElements(ScrollEventAxis::Horizontal, scrollingElementStyle);
bool scrollSnapPointsYUsesElements = styleUsesElements(ScrollEventAxis::Vertical , scrollingElementStyle);
if (scrollSnapPointsXUsesElements || scrollSnapPointsYUsesElements) {
bool shouldAddHorizontalChildOffsets = scrollSnapPointsXUsesElements && canComputeHorizontalOffsets;
bool shouldAddVerticalChildOffsets = scrollSnapPointsYUsesElements && canComputeVerticalOffsets;
appendChildSnapOffsets(scrollingElement, shouldAddHorizontalChildOffsets, horizontalSnapOffsetSubsequence, shouldAddVerticalChildOffsets, verticalSnapOffsetSubsequence);
}
if (scrollingElementStyle.scrollSnapPointsX() && !scrollSnapPointsXUsesElements && canComputeHorizontalOffsets) {
for (auto& snapLength : scrollingElementStyle.scrollSnapPointsX()->offsets)
horizontalSnapOffsetSubsequence.append(valueForLength(snapLength, viewWidth));
}
if (scrollingElementStyle.scrollSnapPointsY() && !scrollSnapPointsYUsesElements && canComputeVerticalOffsets) {
for (auto& snapLength : scrollingElementStyle.scrollSnapPointsY()->offsets)
verticalSnapOffsetSubsequence.append(valueForLength(snapLength, viewHeight));
}
if (canComputeHorizontalOffsets) {
auto horizontalSnapOffsets = std::make_unique<Vector<LayoutUnit>>();
updateFromStyle(*horizontalSnapOffsets, scrollingElementStyle, ScrollEventAxis::Horizontal, viewWidth, scrollWidth, horizontalSnapOffsetSubsequence);
scrollableArea.setHorizontalSnapOffsets(WTF::move(horizontalSnapOffsets));
}
if (canComputeVerticalOffsets) {
auto verticalSnapOffsets = std::make_unique<Vector<LayoutUnit>>();
updateFromStyle(*verticalSnapOffsets, scrollingElementStyle, ScrollEventAxis::Vertical, viewHeight, scrollHeight, verticalSnapOffsetSubsequence);
scrollableArea.setVerticalSnapOffsets(WTF::move(verticalSnapOffsets));
}
}
static Region computeNonFastScrollableRegion(FrameView* frameView)
{
Region nonFastScrollableRegion;
if (const FrameView::ScrollableAreaSet* scrollableAreas = frameView->scrollableAreas()) {
for (FrameView::ScrollableAreaSet::const_iterator it = scrollableAreas->begin(), end = scrollableAreas->end(); it != end; ++it) {
ScrollableArea* scrollableArea = *it;
// Check if this area can be scrolled at all.
if ((!scrollableArea->horizontalScrollbar() || !scrollableArea->horizontalScrollbar()->enabled())
&& (!scrollableArea->verticalScrollbar() || !scrollableArea->verticalScrollbar()->enabled()))
continue;
nonFastScrollableRegion.unite(scrollableArea->scrollableAreaBoundingBox());
}
}
return nonFastScrollableRegion;
}
// Tests that the visible rect (i.e. visual viewport rect) is correctly
// calculated, taking into account both viewports and page scale.
TEST_F(RootFrameViewportTest, VisibleContentRect) {
IntSize viewportSize(500, 401);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(1000, 2000));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
rootFrameViewport->setScrollOffset(ScrollOffset(100, 75), ProgrammaticScroll);
EXPECT_POINT_EQ(IntPoint(100, 75),
rootFrameViewport->visibleContentRect().location());
EXPECT_SIZE_EQ(ScrollOffset(500, 401),
rootFrameViewport->visibleContentRect().size());
visualViewport->setScale(2);
EXPECT_POINT_EQ(IntPoint(100, 75),
rootFrameViewport->visibleContentRect().location());
EXPECT_SIZE_EQ(ScrollOffset(250, 201),
rootFrameViewport->visibleContentRect().size());
}
// Test that the scrollIntoView correctly scrolls the main frame
// and visual viewport such that the given rect is centered in the viewport.
TEST_F(RootFrameViewportTest, ScrollIntoView) {
IntSize viewportSize(100, 150);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(200, 300));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
// Test that the visual viewport is scrolled if the viewport has been
// resized (as is the case when the ChromeOS keyboard comes up) but not
// scaled.
visualViewport->setViewportSize(IntSize(100, 100));
rootFrameViewport->scrollIntoView(LayoutRect(100, 250, 50, 50),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(50, 150), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 50), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(LayoutRect(25, 75, 50, 50),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(25, 75), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 0), visualViewport->getScrollOffset());
// Reset the visual viewport's size, scale the page, and repeat the test
visualViewport->setViewportSize(IntSize(100, 150));
visualViewport->setScale(2);
rootFrameViewport->setScrollOffset(ScrollOffset(), ProgrammaticScroll);
rootFrameViewport->scrollIntoView(LayoutRect(50, 75, 50, 75),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(LayoutRect(190, 290, 10, 10),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(100, 150), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
// Scrolling into view the viewport rect itself should be a no-op.
visualViewport->setViewportSize(IntSize(100, 100));
visualViewport->setScale(1.5f);
visualViewport->setScrollOffset(ScrollOffset(0, 10), ProgrammaticScroll);
layoutViewport->setScrollOffset(ScrollOffset(50, 50), ProgrammaticScroll);
rootFrameViewport->setScrollOffset(rootFrameViewport->getScrollOffset(),
ProgrammaticScroll);
rootFrameViewport->scrollIntoView(
LayoutRect(rootFrameViewport->visibleContentRect(ExcludeScrollbars)),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(50, 50), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 10), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(
LayoutRect(rootFrameViewport->visibleContentRect(ExcludeScrollbars)),
ScrollAlignment::alignCenterAlways, ScrollAlignment::alignCenterAlways);
EXPECT_SIZE_EQ(ScrollOffset(50, 50), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 10), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(
LayoutRect(rootFrameViewport->visibleContentRect(ExcludeScrollbars)),
ScrollAlignment::alignTopAlways, ScrollAlignment::alignTopAlways);
EXPECT_SIZE_EQ(ScrollOffset(50, 50), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 10), visualViewport->getScrollOffset());
}
BOOL OpDocumentEdit::OnInputAction(OpInputAction* action)
{
DEBUG_CHECKER(TRUE);
if (!GetDoc())
return FALSE;
CheckLogTreeChanged(TRUE);
switch (action->GetAction())
{
case OpInputAction::ACTION_LOWLEVEL_PREFILTER_ACTION:
{
OpInputAction* child_action = action->GetChildAction();
if (child_action->IsKeyboardInvoked())
{
DOM_EventType key_event = DOM_EVENT_NONE;
switch (child_action->GetAction())
{
case OpInputAction::ACTION_LOWLEVEL_KEY_DOWN:
key_event = ONKEYDOWN;
break;
case OpInputAction::ACTION_LOWLEVEL_KEY_UP:
key_event = ONKEYUP;
break;
case OpInputAction::ACTION_LOWLEVEL_KEY_PRESSED:
key_event = ONKEYPRESS;
break;
}
if (key_event != DOM_EVENT_NONE)
{
OP_BOOLEAN result = FramesDocument::SendDocumentKeyEvent(GetDoc(), NULL, key_event, child_action->GetActionKeyCode(), child_action->GetKeyValue(), child_action->GetPlatformKeyEventData(), child_action->GetShiftKeys(), child_action->GetKeyRepeat(), child_action->GetKeyLocation(), static_cast<unsigned>(DOM_KEYEVENT_DOCUMENTEDIT));
if (OpStatus::IsMemoryError(result))
g_memory_manager->RaiseCondition(OpStatus::ERR_NO_MEMORY);
return (result == OpBoolean::IS_TRUE);
}
}
return FALSE;
}
case OpInputAction::ACTION_GET_ACTION_STATE:
{
OpInputAction* child_action = action->GetChildAction();
OpInputAction::Action action_type = child_action->GetAction();
#ifdef USE_OP_CLIPBOARD
BOOL force_enabling = FALSE;
if (action_type == OpInputAction::ACTION_CUT ||
action_type == OpInputAction::ACTION_COPY ||
action_type == OpInputAction::ACTION_PASTE)
{
HTML_Element* target = m_layout_modifier.IsActive() ? m_layout_modifier.m_helm : (m_selection.HasContent() ? m_selection.GetStartElement() : m_caret.GetElement());
force_enabling = g_clipboard_manager->ForceEnablingClipboardAction(action_type, m_doc, target);
}
#endif // USE_OP_CLIPBOARD
switch (action_type)
{
case OpInputAction::ACTION_UNDO:
child_action->SetEnabled(!m_readonly && queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_UNDO));
return TRUE;
case OpInputAction::ACTION_REDO:
child_action->SetEnabled(!m_readonly && queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_REDO));
return TRUE;
case OpInputAction::ACTION_TOGGLE_STYLE_BOLD:
child_action->SetEnabled(!m_readonly && !m_plain_text_mode && queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_BOLD));
return TRUE;
case OpInputAction::ACTION_TOGGLE_STYLE_ITALIC:
child_action->SetEnabled(!m_readonly && !m_plain_text_mode && queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_ITALIC));
return TRUE;
case OpInputAction::ACTION_TOGGLE_STYLE_UNDERLINE:
child_action->SetEnabled(!m_readonly && !m_plain_text_mode && queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_UNDERLINE));
return TRUE;
#ifdef USE_OP_CLIPBOARD
case OpInputAction::ACTION_CUT:
child_action->SetEnabled(force_enabling || (!m_readonly && queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_CUT)));
return TRUE;
case OpInputAction::ACTION_COPY:
child_action->SetEnabled(force_enabling || queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_COPY));
return TRUE;
case OpInputAction::ACTION_PASTE:
child_action->SetEnabled(force_enabling || (!m_readonly && queryCommandEnabled(OP_DOCUMENT_EDIT_COMMAND_PASTE)));
return TRUE;
#endif // USE_OP_CLIPBOARD
}
return FALSE;
}
case OpInputAction::ACTION_LOWLEVEL_KEY_PRESSED:
{
OpKey::Code key = action->GetActionKeyCode();
#if defined(_DOCEDIT_DEBUG) && defined(USE_OP_CLIPBOARD)
if (key == OP_KEY_F10)
{
m_doc->GetLogicalDocument()->GetRoot()->DumpDebugTree();
return TRUE;
}
if (key == OP_KEY_F11)
{
OpString text;
GetTextHTML(text);
OP_NEW_DBG("OpDocumentEdit::OnInputAction()", "docedit");
OP_DBG_LEN(text.CStr(), text.Length());
return TRUE;
}
if (key == OP_KEY_F9)
{
const uni_char* tmp = UNI_L("<table border=1><tr><td> </td><td> </td></tr><tr><td> </td><td> </td></tr></table>");
InsertTextHTML(tmp, uni_strlen(tmp));
return TRUE;
}
#endif // _DOCEDIT_DEBUG && USE_OP_CLIPBOARD */
ShiftKeyState modifiers = action->GetShiftKeys();
const uni_char *key_value = action->GetKeyValue();
BOOL is_key_wanted;
switch (key)
{
#ifdef OP_KEY_ENTER_ENABLED
case OP_KEY_ENTER:
is_key_wanted = (modifiers & (SHIFTKEY_CTRL | SHIFTKEY_ALT | SHIFTKEY_META)) == 0;
break;
#endif // OP_KEY_ENTER_ENABLED
#ifdef OP_KEY_TAB_ENABLED
case OP_KEY_TAB:
is_key_wanted = m_wants_tab && modifiers == SHIFTKEY_NONE;
break;
#endif // OP_KEY_TAB_ENABLED
default:
/* A keypress involving CTRL is ignored, but not if it involves
ALT (or META.) Some key mappings use those modifier combinations
for dead/accented keys (e.g., Ctrl-Alt-Z on a Polish keyboard.) */
if ((modifiers & SHIFTKEY_CTRL) != 0 && (modifiers & (SHIFTKEY_ALT | SHIFTKEY_META)) == 0)
is_key_wanted = FALSE;
else
is_key_wanted = key_value != NULL && key_value[0] >= 32 && key_value[0] != 0x7f;
}
if (m_caret.GetElement() && is_key_wanted)
{
EditAction(action);
return TRUE;
}
return FALSE;
}
case OpInputAction::ACTION_GO_TO_START:
case OpInputAction::ACTION_GO_TO_END:
case OpInputAction::ACTION_GO_TO_LINE_START:
case OpInputAction::ACTION_GO_TO_LINE_END:
case OpInputAction::ACTION_PAGE_UP:
case OpInputAction::ACTION_PAGE_DOWN:
case OpInputAction::ACTION_NEXT_CHARACTER:
case OpInputAction::ACTION_PREVIOUS_CHARACTER:
case OpInputAction::ACTION_NEXT_CHARACTER_SPATIAL:
case OpInputAction::ACTION_PREVIOUS_CHARACTER_SPATIAL:
case OpInputAction::ACTION_NEXT_WORD:
case OpInputAction::ACTION_PREVIOUS_WORD:
case OpInputAction::ACTION_NEXT_LINE:
case OpInputAction::ACTION_PREVIOUS_LINE:
case OpInputAction::ACTION_NEXT_LINE_SPATIAL:
case OpInputAction::ACTION_PREVIOUS_LINE_SPATIAL:
case OpInputAction::ACTION_RANGE_GO_TO_START:
case OpInputAction::ACTION_RANGE_GO_TO_END:
case OpInputAction::ACTION_RANGE_GO_TO_LINE_START:
case OpInputAction::ACTION_RANGE_GO_TO_LINE_END:
case OpInputAction::ACTION_RANGE_PAGE_UP:
case OpInputAction::ACTION_RANGE_PAGE_DOWN:
case OpInputAction::ACTION_RANGE_NEXT_CHARACTER:
case OpInputAction::ACTION_RANGE_PREVIOUS_CHARACTER:
case OpInputAction::ACTION_RANGE_NEXT_WORD:
case OpInputAction::ACTION_RANGE_PREVIOUS_WORD:
case OpInputAction::ACTION_RANGE_NEXT_LINE:
case OpInputAction::ACTION_RANGE_PREVIOUS_LINE:
case OpInputAction::ACTION_DELETE:
case OpInputAction::ACTION_DELETE_WORD:
case OpInputAction::ACTION_DELETE_TO_END_OF_LINE:
case OpInputAction::ACTION_BACKSPACE:
case OpInputAction::ACTION_BACKSPACE_WORD:
case OpInputAction::ACTION_TOGGLE_STYLE_BOLD:
case OpInputAction::ACTION_TOGGLE_STYLE_ITALIC:
case OpInputAction::ACTION_TOGGLE_STYLE_UNDERLINE:
case OpInputAction::ACTION_CONVERT_HEX_TO_UNICODE:
{
if (!m_caret.GetElement())
{
// Code is unfortunately dependant on m_caret.m_helm. Will be fixed in the next redesign/rewrite.
return FALSE;
}
EditAction(action);
return TRUE;
}
case OpInputAction::ACTION_TOGGLE_OVERSTRIKE:
{
if (!m_caret.GetElement())
{
// Code is unfortunately dependant on m_caret.m_helm. Will be fixed in the next redesign/rewrite.
return FALSE;
}
m_caret.SetOverstrike(!GetDoc()->GetCaretPainter()->GetOverstrike());
return TRUE;
}
#ifdef SUPPORT_TEXT_DIRECTION
case OpInputAction::ACTION_CHANGE_DIRECTION_TO_LTR:
case OpInputAction::ACTION_CHANGE_DIRECTION_TO_RTL:
if (!m_caret.GetElement())
{
// Code is unfortunately dependant on m_caret.m_helm. Will be fixed in the next redesign/rewrite.
return FALSE;
}
SetRTL(action->GetAction() == OpInputAction::ACTION_CHANGE_DIRECTION_TO_RTL);
return TRUE;
#endif // SUPPORT_TEXT_DIRECTION
case OpInputAction::ACTION_UNDO:
return OpStatus::IsSuccess(execCommand(OP_DOCUMENT_EDIT_COMMAND_UNDO));
case OpInputAction::ACTION_REDO:
return OpStatus::IsSuccess(execCommand(OP_DOCUMENT_EDIT_COMMAND_REDO));
#ifdef USE_OP_CLIPBOARD
case OpInputAction::ACTION_CUT:
return OpStatus::IsSuccess(execCommand(OP_DOCUMENT_EDIT_COMMAND_CUT));
case OpInputAction::ACTION_COPY:
return OpStatus::IsSuccess(execCommand(OP_DOCUMENT_EDIT_COMMAND_COPY));
case OpInputAction::ACTION_PASTE:
return OpStatus::IsSuccess(execCommand(OP_DOCUMENT_EDIT_COMMAND_PASTE));
case OpInputAction::ACTION_PASTE_MOUSE_SELECTION:
{
if (!m_caret.GetElement())
{
// Code is unfortunately dependant on m_caret.m_helm. Will be fixed in the next redesign/rewrite.
return FALSE;
}
# ifdef _X11_SELECTION_POLICY_
g_clipboard_manager->SetMouseSelectionMode(TRUE);
# endif // _X11_SELECTION_POLICY_
if( g_clipboard_manager->HasText() )
{
if( action->GetActionData() == 1 )
{
Clear();
}
HTML_Element* target = m_selection.HasContent() ? m_selection.GetStartElement() : m_caret.GetElement();
g_clipboard_manager->Paste(this, m_doc, target);
}
# ifdef _X11_SELECTION_POLICY_
g_clipboard_manager->SetMouseSelectionMode(FALSE);
# endif // _X11_SELECTION_POLICY_
return TRUE;
}
#endif // USE_OP_CLIPBOARD
case OpInputAction::ACTION_SELECT_ALL:
return OpStatus::IsSuccess(execCommand(OP_DOCUMENT_EDIT_COMMAND_SELECTALL));
#ifdef DEBUG_DOCUMENT_EDIT
case OpInputAction::ACTION_RELOAD:
case OpInputAction::ACTION_FORCE_RELOAD:
#endif
case OpInputAction::ACTION_CLEAR:
Clear();
return TRUE;
case OpInputAction::ACTION_INSERT:
if (!m_caret.GetElement())
{
// Code is unfortunately dependant on m_caret.m_helm. Will be fixed in the next redesign/rewrite.
return FALSE;
}
InsertText(action->GetActionDataString(), uni_strlen(action->GetActionDataString()));
return TRUE;
case OpInputAction::ACTION_FOCUS_NEXT_WIDGET:
case OpInputAction::ACTION_FOCUS_PREVIOUS_WIDGET:
if (m_caret.GetElement())
{
HTML_Element *ec = GetEditableContainer(m_caret.GetElement());
if (ec && ec->Type() == HE_BODY)
{
FramesDocElm *fd_elm = m_doc->GetDocManager()->GetFrame();
if (fd_elm && fd_elm->IsInlineFrame())
{
// This is a IFRAME so we should focus the parentdocument and call this action on it, so
// focus will be moved within the parentdocument.
fd_elm->GetCurrentDoc()->GetParentDoc()->GetVisualDevice()->SetFocus(FOCUS_REASON_KEYBOARD);
OP_BOOLEAN res = fd_elm->GetCurrentDoc()->GetParentDoc()->OnInputAction(action);
return res == OpBoolean::IS_TRUE;
}
}
}
return FALSE;
case OpInputAction::ACTION_SCROLL_UP:
case OpInputAction::ACTION_SCROLL_DOWN:
case OpInputAction::ACTION_SCROLL_LEFT:
case OpInputAction::ACTION_SCROLL_RIGHT:
if (m_caret.GetElement())
{
// Redirect theese actions to a scrollablecontainer so selectionscroll works.
// The ScrollableContainer is not a parent or child of the DocumentEdits inputcontext.
HTML_Element *ec = GetEditableContainer(m_caret.GetElement());
if (ec && ec->GetLayoutBox())
{
ScrollableArea* sc = ec->GetLayoutBox()->GetScrollable();
if (sc)
return sc->TriggerScrollInputAction(action);
}
}
break;
}
return FALSE;
}
InRegionScrollableArea::InRegionScrollableArea(WebPagePrivate* webPage, RenderLayer* layer)
: m_webPage(webPage)
, m_layer(layer)
, m_document(0)
, m_hasWindowVisibleRectCalculated(false)
{
ASSERT(webPage);
ASSERT(layer);
m_isNull = false;
// Add a pointer to the enclosing document as the pointer to layer or node along the way may become invalid.
if (m_layer->enclosingElement())
m_document = m_layer->enclosingElement()->document();
// FIXME: Add an ASSERT here as the 'layer' must be scrollable.
RenderObject* layerRenderer = layer->renderer();
ASSERT(layerRenderer);
if (layerRenderer->isRenderView()) { // #document case
RenderView* renderView = toRenderView(layerRenderer);
ASSERT(renderView);
FrameView* view = toRenderView(layerRenderer)->frameView();
ASSERT(view);
Frame* frame = view->frame();
ASSERT_UNUSED(frame, frame);
m_scrollPosition = m_webPage->mapToTransformed(view->scrollPosition());
m_contentsSize = m_webPage->mapToTransformed(view->contentsSize());
m_viewportSize = m_webPage->mapToTransformed(view->visibleContentRect(ScrollableArea::ExcludeScrollbars)).size();
m_documentViewportRect = view->frameRect();
m_scrollsHorizontally = view->contentsWidth() > view->visibleWidth();
m_scrollsVertically = view->contentsHeight() > view->visibleHeight();
m_supportsCompositedScrolling = true;
m_scrollTarget = InnerFrame;
ASSERT(!m_cachedNonCompositedScrollableNode);
m_camouflagedCompositedScrollableLayer = reinterpret_cast<unsigned>(renderView->compositor()->scrollLayer()->platformLayer());
m_cachedCompositedScrollableLayer = renderView->compositor()->scrollLayer()->platformLayer();
} else { // RenderBox-based elements case (scrollable boxes (div's, p's, textarea's, etc)).
RenderBox* box = m_layer->renderBox();
ASSERT(box);
ASSERT(InRegionScrollerPrivate::canScrollRenderBox(box));
ScrollableArea* scrollableArea = static_cast<ScrollableArea*>(m_layer);
m_scrollPosition = m_webPage->mapToTransformed(scrollableArea->scrollPosition());
m_contentsSize = m_webPage->mapToTransformed(scrollableArea->contentsSize());
m_viewportSize = m_webPage->mapToTransformed(scrollableArea->visibleContentRect(ScrollableArea::ExcludeScrollbars)).size();
m_documentViewportRect = enclosingIntRect(box->absoluteClippedOverflowRect());
m_scrollsHorizontally = box->scrollWidth() != box->clientWidth();
m_scrollsVertically = box->scrollHeight() != box->clientHeight();
// Check the overflow if its not an input field because overflow can be set to hidden etc. by the content.
if (!box->node() || !box->node()->rendererIsEditable()) {
m_scrollsHorizontally = m_scrollsHorizontally && box->scrollsOverflowX();
m_scrollsVertically = m_scrollsVertically && box->scrollsOverflowY();
}
m_scrollTarget = BlockElement;
// Both caches below are self-exclusive.
if (m_layer->usesCompositedScrolling()) {
m_forceContentToBeVerticallyScrollable = true;
m_supportsCompositedScrolling = true;
ASSERT(m_layer->backing()->hasScrollingLayer());
m_camouflagedCompositedScrollableLayer = reinterpret_cast<unsigned>(m_layer->backing()->scrollingContentsLayer()->platformLayer());
m_cachedCompositedScrollableLayer = m_layer->backing()->scrollingContentsLayer()->platformLayer();
ASSERT(!m_cachedNonCompositedScrollableNode);
} else {
m_camouflagedCompositedScrollableLayer = reinterpret_cast<unsigned>(m_layer->enclosingElement());
m_cachedNonCompositedScrollableNode = m_layer->enclosingElement();
ASSERT(!m_cachedCompositedScrollableLayer);
}
}
}
// Tests that scrolling the viewport when the layout viewport is
// !userInputScrollable (as happens when overflow:hidden is set) works
// correctly, that is, the visual viewport can scroll, but not the layout.
TEST_F(RootFrameViewportTest, UserInputScrollable) {
IntSize viewportSize(100, 150);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(200, 300));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
visualViewport->setScale(2);
// Disable just the layout viewport's horizontal scrolling, the
// RootFrameViewport should remain scrollable overall.
layoutViewport->setUserInputScrollable(false, true);
visualViewport->setUserInputScrollable(true, true);
EXPECT_TRUE(rootFrameViewport->userInputScrollable(HorizontalScrollbar));
EXPECT_TRUE(rootFrameViewport->userInputScrollable(VerticalScrollbar));
// Layout viewport shouldn't scroll since it's not horizontally scrollable,
// but visual viewport should.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(300, 0));
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 0), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 0), rootFrameViewport->getScrollOffset());
// Vertical scrolling should be unaffected.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(0, 300));
EXPECT_SIZE_EQ(ScrollOffset(0, 150), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 225), rootFrameViewport->getScrollOffset());
// Try the same checks as above but for the vertical direction.
// ===============================================
rootFrameViewport->setScrollOffset(ScrollOffset(), ProgrammaticScroll);
// Disable just the layout viewport's vertical scrolling, the
// RootFrameViewport should remain scrollable overall.
layoutViewport->setUserInputScrollable(true, false);
visualViewport->setUserInputScrollable(true, true);
EXPECT_TRUE(rootFrameViewport->userInputScrollable(HorizontalScrollbar));
EXPECT_TRUE(rootFrameViewport->userInputScrollable(VerticalScrollbar));
// Layout viewport shouldn't scroll since it's not vertically scrollable,
// but visual viewport should.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(0, 300));
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 75), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 75), rootFrameViewport->getScrollOffset());
// Horizontal scrolling should be unaffected.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(300, 0));
EXPECT_SIZE_EQ(ScrollOffset(100, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(150, 75), rootFrameViewport->getScrollOffset());
}
// Make sure scrolls using the scroll animator (scroll(), setScrollOffset())
// work correctly when one of the subviewports is explicitly scrolled without
// using the // RootFrameViewport interface.
TEST_F(RootFrameViewportTest, TestScrollAnimatorUpdatedBeforeScroll) {
IntSize viewportSize(100, 150);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(200, 300));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
visualViewport->setScale(2);
visualViewport->setScrollOffset(ScrollOffset(50, 75), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(50, 75), rootFrameViewport->getScrollOffset());
// If the scroll animator doesn't update, it will still think it's at (0, 0)
// and so it may early exit.
rootFrameViewport->setScrollOffset(ScrollOffset(0, 0), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(0, 0), rootFrameViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 0), visualViewport->getScrollOffset());
// Try again for userScroll()
visualViewport->setScrollOffset(ScrollOffset(50, 75), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(50, 75), rootFrameViewport->getScrollOffset());
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(-50, 0));
EXPECT_SIZE_EQ(ScrollOffset(0, 75), rootFrameViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 75), visualViewport->getScrollOffset());
// Make sure the layout viewport is also accounted for.
rootFrameViewport->setScrollOffset(ScrollOffset(0, 0), ProgrammaticScroll);
layoutViewport->setScrollOffset(ScrollOffset(100, 150), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(100, 150), rootFrameViewport->getScrollOffset());
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(-100, 0));
EXPECT_SIZE_EQ(ScrollOffset(0, 150), rootFrameViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 150), layoutViewport->getScrollOffset());
}
InRegionScrollableArea::InRegionScrollableArea(WebPagePrivate* webPage, RenderLayer* layer)
: m_webPage(webPage)
, m_layer(layer)
, m_document(0)
, m_hasWindowVisibleRectCalculated(false)
{
ASSERT(webPage);
ASSERT(layer);
m_isNull = false;
// Add a pointer to the enclosing document as the pointer to layer or node along the way may become invalid.
if (m_layer->enclosingElement())
m_document = m_layer->enclosingElement()->document();
// FIXME: Add an ASSERT here as the 'layer' must be scrollable.
RenderObject* layerRenderer = layer->renderer();
ASSERT(layerRenderer);
if (layerRenderer->isRenderView()) { // #document case
RenderView* renderView = toRenderView(layerRenderer);
ASSERT(renderView);
FrameView* view = toRenderView(layerRenderer)->frameView();
ASSERT(view);
Frame* frame = view->frame();
ASSERT_UNUSED(frame, frame);
const Platform::ViewportAccessor* viewportAccessor = m_webPage->m_webkitThreadViewportAccessor;
m_scrollPosition = viewportAccessor->roundToPixelFromDocumentContents(WebCore::FloatPoint(view->scrollPosition()));
m_contentsSize = viewportAccessor->roundToPixelFromDocumentContents(Platform::FloatRect(Platform::FloatPoint::zero(), WebCore::FloatSize(view->contentsSize()))).size();
m_viewportSize = viewportAccessor->roundToPixelFromDocumentContents(WebCore::FloatRect(view->visibleContentRect(ScrollableArea::ExcludeScrollbars))).size();
m_documentViewportRect = view->frameRect();
m_scrollsHorizontally = view->contentsWidth() > view->visibleWidth();
m_scrollsVertically = view->contentsHeight() > view->visibleHeight();
m_supportsCompositedScrolling = true;
m_scrollTarget = InnerFrame;
ASSERT(!m_cachedNonCompositedScrollableNode);
m_camouflagedCompositedScrollableLayer = reinterpret_cast<unsigned>(renderView->compositor()->scrollLayer()->platformLayer());
m_cachedCompositedScrollableLayer = renderView->compositor()->scrollLayer()->platformLayer();
} else { // RenderBox-based elements case (scrollable boxes (div's, p's, textarea's, etc)).
RenderBox* box = m_layer->renderBox();
ASSERT(box);
ASSERT(InRegionScrollerPrivate::canScrollRenderBox(box));
const Platform::ViewportAccessor* viewportAccessor = m_webPage->m_webkitThreadViewportAccessor;
ScrollableArea* scrollableArea = static_cast<ScrollableArea*>(m_layer);
m_scrollPosition = viewportAccessor->roundToPixelFromDocumentContents(WebCore::FloatPoint(scrollableArea->scrollPosition()));
m_contentsSize = viewportAccessor->roundToPixelFromDocumentContents(Platform::FloatRect(Platform::FloatPoint::zero(), WebCore::FloatSize(scrollableArea->contentsSize()))).size();
m_viewportSize = viewportAccessor->roundToPixelFromDocumentContents(WebCore::FloatRect(scrollableArea->visibleContentRect(ScrollableArea::ExcludeScrollbars))).size();
m_documentViewportRect = enclosingIntRect(box->absoluteClippedOverflowRect());
m_scrollsHorizontally = box->scrollWidth() != box->clientWidth();
m_scrollsVertically = box->scrollHeight() != box->clientHeight();
// Check the overflow if its not an input field because overflow can be set to hidden etc. by the content.
if (!DOMSupport::isShadowHostTextInputElement(box->node())) {
m_scrollsHorizontally = m_scrollsHorizontally && box->scrollsOverflowX();
m_scrollsVertically = m_scrollsVertically && box->scrollsOverflowY();
}
m_scrollTarget = BlockElement;
// Both caches below are self-exclusive.
if (m_layer->usesCompositedScrolling()) {
m_forceContentToBeHorizontallyScrollable = m_scrollsHorizontally;
m_forceContentToBeVerticallyScrollable = m_scrollsVertically;
// Force content to be scrollable even if it doesn't need to scroll in either direction.
if (!m_scrollsHorizontally && !m_scrollsVertically) {
if (box->scrollsOverflowY())
m_forceContentToBeVerticallyScrollable = true;
else if (box->scrollsOverflowX()) // If it's already forced scrollable vertically, don't force it to scroll horizontally
m_forceContentToBeHorizontallyScrollable = true;
}
m_supportsCompositedScrolling = true;
ASSERT(m_layer->backing()->hasScrollingLayer());
m_camouflagedCompositedScrollableLayer = reinterpret_cast<unsigned>(m_layer->backing()->scrollingContentsLayer()->platformLayer());
m_cachedCompositedScrollableLayer = m_layer->backing()->scrollingContentsLayer()->platformLayer();
ASSERT(!m_cachedNonCompositedScrollableNode);
} else {
m_camouflagedCompositedScrollableLayer = reinterpret_cast<unsigned>(m_layer->enclosingElement());
m_cachedNonCompositedScrollableNode = m_layer->enclosingElement();
ASSERT(!m_cachedCompositedScrollableLayer);
}
}
}
void updateSnapOffsetsForScrollableArea(ScrollableArea& scrollableArea, HTMLElement& scrollingElement, const RenderBox& scrollingElementBox, const RenderStyle& scrollingElementStyle)
{
auto* scrollContainer = scrollingElement.renderer();
auto scrollSnapType = scrollingElementStyle.scrollSnapType();
if (!scrollContainer || scrollSnapType.strictness == ScrollSnapStrictness::None || scrollContainer->view().boxesWithScrollSnapPositions().isEmpty()) {
scrollableArea.clearHorizontalSnapOffsets();
scrollableArea.clearVerticalSnapOffsets();
return;
}
Vector<LayoutUnit> verticalSnapOffsets;
Vector<LayoutUnit> horizontalSnapOffsets;
Vector<ScrollOffsetRange<LayoutUnit>> verticalSnapOffsetRanges;
Vector<ScrollOffsetRange<LayoutUnit>> horizontalSnapOffsetRanges;
HashSet<float> seenVerticalSnapOffsets;
HashSet<float> seenHorizontalSnapOffsets;
bool hasHorizontalSnapOffsets = scrollSnapType.axis == ScrollSnapAxis::Both || scrollSnapType.axis == ScrollSnapAxis::XAxis || scrollSnapType.axis == ScrollSnapAxis::Inline;
bool hasVerticalSnapOffsets = scrollSnapType.axis == ScrollSnapAxis::Both || scrollSnapType.axis == ScrollSnapAxis::YAxis || scrollSnapType.axis == ScrollSnapAxis::Block;
auto maxScrollLeft = scrollingElementBox.scrollWidth() - scrollingElementBox.contentWidth();
auto maxScrollTop = scrollingElementBox.scrollHeight() - scrollingElementBox.contentHeight();
LayoutPoint containerScrollOffset(scrollingElementBox.scrollLeft(), scrollingElementBox.scrollTop());
// The bounds of the scrolling container's snap port, where the top left of the scrolling container's border box is the origin.
auto scrollSnapPort = computeScrollSnapPortOrAreaRect(scrollingElementBox.paddingBoxRect(), scrollingElementStyle.scrollPadding(), InsetOrOutset::Inset);
#if !LOG_DISABLED
LOG(Scrolling, "Computing scroll snap offsets in snap port: %s", snapPortOrAreaToString(scrollSnapPort).utf8().data());
#endif
for (auto* child : scrollContainer->view().boxesWithScrollSnapPositions()) {
if (child->findEnclosingScrollableContainer() != scrollContainer)
continue;
// The bounds of the child element's snap area, where the top left of the scrolling container's border box is the origin.
// The snap area is the bounding box of the child element's border box, after applying transformations.
auto scrollSnapArea = LayoutRect(child->localToContainerQuad(FloatQuad(child->borderBoundingBox()), scrollingElement.renderBox()).boundingBox());
scrollSnapArea.moveBy(containerScrollOffset);
scrollSnapArea = computeScrollSnapPortOrAreaRect(scrollSnapArea, child->style().scrollSnapMargin(), InsetOrOutset::Outset);
#if !LOG_DISABLED
LOG(Scrolling, " Considering scroll snap area: %s", snapPortOrAreaToString(scrollSnapArea).utf8().data());
#endif
auto alignment = child->style().scrollSnapAlign();
if (hasHorizontalSnapOffsets && alignment.x != ScrollSnapAxisAlignType::None) {
auto absoluteScrollOffset = clampTo<LayoutUnit>(computeScrollSnapAlignOffset(scrollSnapArea.x(), scrollSnapArea.width(), alignment.x) - computeScrollSnapAlignOffset(scrollSnapPort.x(), scrollSnapPort.width(), alignment.x), 0, maxScrollLeft);
if (!seenHorizontalSnapOffsets.contains(absoluteScrollOffset)) {
seenHorizontalSnapOffsets.add(absoluteScrollOffset);
horizontalSnapOffsets.append(absoluteScrollOffset);
}
}
if (hasVerticalSnapOffsets && alignment.y != ScrollSnapAxisAlignType::None) {
auto absoluteScrollOffset = clampTo<LayoutUnit>(computeScrollSnapAlignOffset(scrollSnapArea.y(), scrollSnapArea.height(), alignment.y) - computeScrollSnapAlignOffset(scrollSnapPort.y(), scrollSnapPort.height(), alignment.y), 0, maxScrollTop);
if (!seenVerticalSnapOffsets.contains(absoluteScrollOffset)) {
seenVerticalSnapOffsets.add(absoluteScrollOffset);
verticalSnapOffsets.append(absoluteScrollOffset);
}
}
}
if (!horizontalSnapOffsets.isEmpty()) {
adjustAxisSnapOffsetsForScrollExtent(horizontalSnapOffsets, maxScrollLeft);
#if !LOG_DISABLED
LOG(Scrolling, " => Computed horizontal scroll snap offsets: %s", snapOffsetsToString(horizontalSnapOffsets).utf8().data());
LOG(Scrolling, " => Computed horizontal scroll snap offset ranges: %s", snapOffsetRangesToString(horizontalSnapOffsetRanges).utf8().data());
#endif
if (scrollSnapType.strictness == ScrollSnapStrictness::Proximity)
computeAxisProximitySnapOffsetRanges(horizontalSnapOffsets, horizontalSnapOffsetRanges, scrollSnapPort.width());
scrollableArea.setHorizontalSnapOffsets(horizontalSnapOffsets);
scrollableArea.setHorizontalSnapOffsetRanges(horizontalSnapOffsetRanges);
} else
scrollableArea.clearHorizontalSnapOffsets();
if (!verticalSnapOffsets.isEmpty()) {
adjustAxisSnapOffsetsForScrollExtent(verticalSnapOffsets, maxScrollTop);
#if !LOG_DISABLED
LOG(Scrolling, " => Computed vertical scroll snap offsets: %s", snapOffsetsToString(verticalSnapOffsets).utf8().data());
LOG(Scrolling, " => Computed vertical scroll snap offset ranges: %s", snapOffsetRangesToString(verticalSnapOffsetRanges).utf8().data());
#endif
if (scrollSnapType.strictness == ScrollSnapStrictness::Proximity)
computeAxisProximitySnapOffsetRanges(verticalSnapOffsets, verticalSnapOffsetRanges, scrollSnapPort.height());
scrollableArea.setVerticalSnapOffsets(verticalSnapOffsets);
scrollableArea.setVerticalSnapOffsetRanges(verticalSnapOffsetRanges);
} else
scrollableArea.clearVerticalSnapOffsets();
}
