void ScrollingCoordinator::updateMainFrameScrollPosition(const IntPoint& scrollPosition, bool programmaticScroll, SetOrSyncScrollingLayerPosition scrollingLayerPositionAction)
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame()->view();
if (!frameView)
return;
bool oldProgrammaticScroll = frameView->inProgrammaticScroll();
frameView->setInProgrammaticScroll(programmaticScroll);
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(scrollPosition);
frameView->setConstrainsScrollingToContentEdge(true);
frameView->setInProgrammaticScroll(oldProgrammaticScroll);
#if USE(ACCELERATED_COMPOSITING)
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
if (programmaticScroll || scrollingLayerPositionAction == SetScrollingLayerPosition)
scrollLayer->setPosition(-frameView->scrollPosition());
else {
scrollLayer->syncPosition(-frameView->scrollPosition());
LayoutRect viewportRect = frameView->visibleContentRect();
viewportRect.setLocation(IntPoint(frameView->scrollOffsetForFixedPosition()));
syncChildPositions(viewportRect);
}
}
#else
UNUSED_PARAM(scrollingLayerPositionAction);
#endif
}
void ScrollingCoordinator::updateMainFrameScrollPosition(const IntPoint& scrollPosition, bool programmaticScroll)
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame()->view();
if (!frameView)
return;
bool oldProgrammaticScroll = frameView->inProgrammaticScroll();
frameView->setInProgrammaticScroll(programmaticScroll);
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(scrollPosition);
frameView->setConstrainsScrollingToContentEdge(true);
frameView->setInProgrammaticScroll(oldProgrammaticScroll);
#if USE(ACCELERATED_COMPOSITING)
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
if (programmaticScroll)
scrollLayer->setPosition(-frameView->scrollPosition());
else
scrollLayer->syncPosition(-frameView->scrollPosition());
}
#endif
}
void ScrollingCoordinator::updateMainFrameScrollPosition(const IntPoint& scrollPosition, bool programmaticScroll, SetOrSyncScrollingLayerPosition scrollingLayerPositionAction)
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame().view();
if (!frameView)
return;
bool oldProgrammaticScroll = frameView->inProgrammaticScroll();
frameView->setInProgrammaticScroll(programmaticScroll);
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(scrollPosition);
frameView->setConstrainsScrollingToContentEdge(true);
frameView->setInProgrammaticScroll(oldProgrammaticScroll);
#if USE(ACCELERATED_COMPOSITING)
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
GraphicsLayer* counterScrollingLayer = counterScrollingLayerForFrameView(frameView);
GraphicsLayer* headerLayer = headerLayerForFrameView(frameView);
GraphicsLayer* footerLayer = footerLayerForFrameView(frameView);
IntSize scrollOffsetForFixed = frameView->scrollOffsetForFixedPosition();
if (programmaticScroll || scrollingLayerPositionAction == SetScrollingLayerPosition) {
scrollLayer->setPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->setPosition(IntPoint(scrollOffsetForFixed));
if (headerLayer)
headerLayer->setPosition(FloatPoint(scrollOffsetForFixed.width(), 0));
if (footerLayer)
footerLayer->setPosition(FloatPoint(scrollOffsetForFixed.width(), frameView->totalContentsSize().height() - frameView->footerHeight()));
} else {
scrollLayer->syncPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->syncPosition(IntPoint(scrollOffsetForFixed));
if (headerLayer)
headerLayer->syncPosition(FloatPoint(scrollOffsetForFixed.width(), 0));
if (footerLayer)
footerLayer->syncPosition(FloatPoint(scrollOffsetForFixed.width(), frameView->totalContentsSize().height() - frameView->footerHeight()));
LayoutRect viewportRect = frameView->viewportConstrainedVisibleContentRect();
syncChildPositions(viewportRect);
}
}
#else
UNUSED_PARAM(scrollingLayerPositionAction);
#endif
}
void AsyncScrollingCoordinator::updateScrollPositionAfterAsyncScroll(ScrollingNodeID scrollingNodeID, const FloatPoint& scrollPosition, bool programmaticScroll, SetOrSyncScrollingLayerPosition scrollingLayerPositionAction)
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame().view();
if (!frameView)
return;
bool oldProgrammaticScroll = frameView->inProgrammaticScroll();
frameView->setInProgrammaticScroll(programmaticScroll);
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(roundedIntPoint(scrollPosition));
frameView->setConstrainsScrollingToContentEdge(true);
frameView->setInProgrammaticScroll(oldProgrammaticScroll);
if (scrollingNodeID == frameView->scrollLayerID()) {
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
GraphicsLayer* counterScrollingLayer = counterScrollingLayerForFrameView(frameView);
GraphicsLayer* headerLayer = headerLayerForFrameView(frameView);
GraphicsLayer* footerLayer = footerLayerForFrameView(frameView);
IntSize scrollOffsetForFixed = frameView->scrollOffsetForFixedPosition();
if (programmaticScroll || scrollingLayerPositionAction == SetScrollingLayerPosition) {
scrollLayer->setPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->setPosition(IntPoint(scrollOffsetForFixed));
if (headerLayer)
headerLayer->setPosition(FloatPoint(scrollOffsetForFixed.width(), 0));
if (footerLayer)
footerLayer->setPosition(FloatPoint(scrollOffsetForFixed.width(), frameView->totalContentsSize().height() - frameView->footerHeight()));
} else {
scrollLayer->syncPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->syncPosition(IntPoint(scrollOffsetForFixed));
if (headerLayer)
headerLayer->syncPosition(FloatPoint(scrollOffsetForFixed.width(), 0));
if (footerLayer)
footerLayer->syncPosition(FloatPoint(scrollOffsetForFixed.width(), frameView->totalContentsSize().height() - frameView->footerHeight()));
LayoutRect viewportRect = frameView->viewportConstrainedVisibleContentRect();
syncChildPositions(viewportRect);
}
}
}
// FIXME: handle non-main scrolling nodes.
}
void PaintLayerCompositor::frameViewDidScroll()
{
FrameView* frameView = m_layoutView.frameView();
IntPoint scrollPosition = frameView->scrollPosition();
if (!m_scrollLayer)
return;
bool scrollingCoordinatorHandlesOffset = false;
if (ScrollingCoordinator* scrollingCoordinator = this->scrollingCoordinator()) {
scrollingCoordinatorHandlesOffset = scrollingCoordinator->scrollableAreaScrollLayerDidChange(frameView);
}
// Scroll position = scroll minimum + scroll offset. Adjust the layer's
// position to handle whatever the scroll coordinator isn't handling.
// The minimum scroll position is non-zero for RTL pages with overflow.
if (scrollingCoordinatorHandlesOffset)
m_scrollLayer->setPosition(-frameView->minimumScrollPosition());
else
m_scrollLayer->setPosition(-scrollPosition);
Platform::current()->histogramEnumeration("Renderer.AcceleratedFixedRootBackground",
ScrolledMainFrameBucket,
AcceleratedFixedRootBackgroundHistogramMax);
}
void ScrollingCoordinator::updateMainFrameScrollPositionAndScrollLayerPosition()
{
#if USE(ACCELERATED_COMPOSITING) && ENABLE(THREADED_SCROLLING)
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame()->view();
if (!frameView)
return;
IntPoint scrollPosition = m_scrollingTree->mainFrameScrollPosition();
// Make sure to update the main frame scroll position before changing the scroll layer position,
// otherwise we'll introduce jittering on pages with slow repaint objects (like background-attachment: fixed).
frameView->updateCompositingLayers();
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(scrollPosition);
frameView->setConstrainsScrollingToContentEdge(true);
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView))
scrollLayer->setPosition(-frameView->scrollPosition());
#endif
}
void HistoryController::saveScrollPositionAndViewStateToItem(HistoryItem* item)
{
FrameView* frameView = m_frame.view();
if (!item || !frameView)
return;
if (m_frame.document()->inPageCache())
item->setScrollPosition(frameView->cachedScrollPosition());
else
item->setScrollPosition(frameView->scrollPosition());
#if PLATFORM(IOS)
item->setExposedContentRect(frameView->exposedContentRect());
item->setUnobscuredContentRect(frameView->unobscuredContentRect());
#endif
Page* page = m_frame.page();
if (page && m_frame.isMainFrame()) {
item->setPageScaleFactor(page->pageScaleFactor() / page->viewScaleFactor());
#if PLATFORM(IOS)
item->setObscuredInset(page->obscuredInset());
#endif
}
// FIXME: It would be great to work out a way to put this code in WebCore instead of calling through to the client.
m_frame.loader().client().saveViewStateToItem(*item);
// Notify clients that the HistoryItem has changed.
item->notifyChanged();
}
bool DevToolsEmulator::handleInputEvent(const WebInputEvent& inputEvent)
{
Page* page = m_webViewImpl->page();
if (!page)
return false;
// FIXME: This workaround is required for touch emulation on Mac, where
// compositor-side pinch handling is not enabled. See http://crbug.com/138003.
bool isPinch = inputEvent.type == WebInputEvent::GesturePinchBegin || inputEvent.type == WebInputEvent::GesturePinchUpdate || inputEvent.type == WebInputEvent::GesturePinchEnd;
if (isPinch && m_touchEventEmulationEnabled) {
FrameView* frameView = page->deprecatedLocalMainFrame()->view();
PlatformGestureEventBuilder gestureEvent(frameView, static_cast<const WebGestureEvent&>(inputEvent));
float pageScaleFactor = page->pageScaleFactor();
if (gestureEvent.type() == PlatformEvent::GesturePinchBegin) {
m_lastPinchAnchorCss = adoptPtr(new IntPoint(frameView->scrollPosition() + gestureEvent.position()));
m_lastPinchAnchorDip = adoptPtr(new IntPoint(gestureEvent.position()));
m_lastPinchAnchorDip->scale(pageScaleFactor, pageScaleFactor);
}
if (gestureEvent.type() == PlatformEvent::GesturePinchUpdate && m_lastPinchAnchorCss) {
float newPageScaleFactor = pageScaleFactor * gestureEvent.scale();
IntPoint anchorCss(*m_lastPinchAnchorDip.get());
anchorCss.scale(1.f / newPageScaleFactor, 1.f / newPageScaleFactor);
m_webViewImpl->setPageScaleFactor(newPageScaleFactor);
m_webViewImpl->mainFrame()->setScrollOffset(toIntSize(*m_lastPinchAnchorCss.get() - toIntSize(anchorCss)));
}
if (gestureEvent.type() == PlatformEvent::GesturePinchEnd) {
m_lastPinchAnchorCss.clear();
m_lastPinchAnchorDip.clear();
}
return true;
}
return false;
}
void Page::setPageScaleFactor(float scale, const IntPoint& origin)
{
if (!mainFrame()->isLocalFrame())
return;
FrameView* view = deprecatedLocalMainFrame()->view();
PinchViewport& viewport = frameHost().pinchViewport();
if (scale != viewport.scale()) {
viewport.setScale(scale);
if (view && !settings().pinchVirtualViewportEnabled())
view->setVisibleContentScaleFactor(scale);
deprecatedLocalMainFrame()->deviceOrPageScaleFactorChanged();
m_chrome->client().deviceOrPageScaleFactorChanged();
// FIXME: In virtual-viewport pinch mode, scale doesn't change the fixed-pos viewport;
// remove once it's the only pinch mode in town.
if (view)
view->viewportConstrainedVisibleContentSizeChanged(true, true);
deprecatedLocalMainFrame()->loader().saveScrollState();
}
if (view && view->scrollPosition() != origin)
view->notifyScrollPositionChanged(origin);
}
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
}
}
bool WebDevToolsAgentImpl::handleInputEvent(WebCore::Page* page, const WebInputEvent& inputEvent)
{
if (!m_attached && !m_generatingEvent)
return false;
// FIXME: This workaround is required for touch emulation on Mac, where
// compositor-side pinch handling is not enabled. See http://crbug.com/138003.
bool isPinch = inputEvent.type == WebInputEvent::GesturePinchBegin || inputEvent.type == WebInputEvent::GesturePinchUpdate || inputEvent.type == WebInputEvent::GesturePinchEnd;
if (isPinch && m_touchEventEmulationEnabled && m_emulateViewportEnabled) {
FrameView* frameView = page->mainFrame()->view();
PlatformGestureEventBuilder gestureEvent(frameView, *static_cast<const WebGestureEvent*>(&inputEvent));
float pageScaleFactor = page->pageScaleFactor();
if (gestureEvent.type() == PlatformEvent::GesturePinchBegin) {
m_lastPinchAnchorCss = adoptPtr(new WebCore::IntPoint(frameView->scrollPosition() + gestureEvent.position()));
m_lastPinchAnchorDip = adoptPtr(new WebCore::IntPoint(gestureEvent.position()));
m_lastPinchAnchorDip->scale(pageScaleFactor, pageScaleFactor);
}
if (gestureEvent.type() == PlatformEvent::GesturePinchUpdate && m_lastPinchAnchorCss) {
float newPageScaleFactor = pageScaleFactor * gestureEvent.scale();
WebCore::IntPoint anchorCss(*m_lastPinchAnchorDip.get());
anchorCss.scale(1.f / newPageScaleFactor, 1.f / newPageScaleFactor);
m_webViewImpl->setPageScaleFactor(newPageScaleFactor);
m_webViewImpl->setMainFrameScrollOffset(*m_lastPinchAnchorCss.get() - toIntSize(anchorCss));
}
if (gestureEvent.type() == PlatformEvent::GesturePinchEnd) {
m_lastPinchAnchorCss.clear();
m_lastPinchAnchorDip.clear();
}
return true;
}
InspectorController* ic = inspectorController();
if (!ic)
return false;
if (WebInputEvent::isGestureEventType(inputEvent.type) && inputEvent.type == WebInputEvent::GestureTap) {
// Only let GestureTab in (we only need it and we know PlatformGestureEventBuilder supports it).
PlatformGestureEvent gestureEvent = PlatformGestureEventBuilder(page->mainFrame()->view(), *static_cast<const WebGestureEvent*>(&inputEvent));
return ic->handleGestureEvent(page->mainFrame(), gestureEvent);
}
if (WebInputEvent::isMouseEventType(inputEvent.type) && inputEvent.type != WebInputEvent::MouseEnter) {
// PlatformMouseEventBuilder does not work with MouseEnter type, so we filter it out manually.
PlatformMouseEvent mouseEvent = PlatformMouseEventBuilder(page->mainFrame()->view(), *static_cast<const WebMouseEvent*>(&inputEvent));
return ic->handleMouseEvent(page->mainFrame(), mouseEvent);
}
if (WebInputEvent::isTouchEventType(inputEvent.type)) {
PlatformTouchEvent touchEvent = PlatformTouchEventBuilder(page->mainFrame()->view(), *static_cast<const WebTouchEvent*>(&inputEvent));
return ic->handleTouchEvent(page->mainFrame(), touchEvent);
}
if (WebInputEvent::isKeyboardEventType(inputEvent.type)) {
PlatformKeyboardEvent keyboardEvent = PlatformKeyboardEventBuilder(*static_cast<const WebKeyboardEvent*>(&inputEvent));
return ic->handleKeyboardEvent(page->mainFrame(), keyboardEvent);
}
return false;
}
IntSize WebFrame::scrollOffset() const
{
if (!m_coreFrame)
return IntSize();
FrameView* view = m_coreFrame->view();
if (!view)
return IntSize();
return toIntSize(view->scrollPosition());
}
void Page::setPageScaleFactor(float scale, const IntPoint& origin)
{
Document* document = mainFrame()->document();
FrameView* view = document->view();
if (scale == m_pageScaleFactor) {
if (view && (view->scrollPosition() != origin || view->delegatesScrolling())) {
if (!m_settings->applyPageScaleFactorInCompositor())
document->updateLayoutIgnorePendingStylesheets();
view->setScrollPosition(origin);
}
return;
}
m_pageScaleFactor = scale;
if (!m_settings->applyPageScaleFactorInCompositor()) {
if (document->renderer())
document->renderer()->setNeedsLayout(true);
document->recalcStyle(Style::Force);
// Transform change on RenderView doesn't trigger repaint on non-composited contents.
mainFrame()->view()->invalidateRect(IntRect(LayoutRect::infiniteRect()));
}
#if USE(ACCELERATED_COMPOSITING)
mainFrame()->deviceOrPageScaleFactorChanged();
#endif
if (view && view->fixedElementsLayoutRelativeToFrame())
view->setViewportConstrainedObjectsNeedLayout();
if (view && view->scrollPosition() != origin) {
if (!m_settings->applyPageScaleFactorInCompositor() && document->renderer() && document->renderer()->needsLayout() && view->didFirstLayout())
view->layout();
view->setScrollPosition(origin);
}
}
void AsyncScrollingCoordinator::updateMainFrameScrollLayerPosition()
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame().view();
if (!frameView)
return;
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(*frameView))
scrollLayer->setPosition(-frameView->scrollPosition());
}
void PluginViewPrivate::setVisibleRects(const NPRect rects[], int32_t count)
{
m_keepVisibleRect = IntRect();
if (!m_view->parent() || !count)
return;
for (int i = 0; i < count; i++) {
IntRect addRect = IntRect(rects[i].left, rects[i].top, rects[i].right - rects[i].left, rects[i].bottom - rects[i].top);
m_keepVisibleRect.unite(addRect);
}
// Don't cause a possible scroll if the result is an empty rectangle.
if (m_keepVisibleRect.isEmpty())
return;
// Adjust the rect to the parent window and then adjust for scrolling.
m_keepVisibleRect = m_view->convertToContainingWindow(m_keepVisibleRect);
FrameView* frameView = static_cast<FrameView*>(m_view->parent());
m_keepVisibleRect.move(frameView->scrollPosition().x(), frameView->scrollPosition().y());
frameView->hostWindow()->platformPageClient()->ensureContentVisible();
}
PassRefPtr<WebImage> InjectedBundleRangeHandle::renderedImage(SnapshotOptions options)
{
Document& ownerDocument = m_range->ownerDocument();
Frame* frame = ownerDocument.frame();
if (!frame)
return nullptr;
FrameView* frameView = frame->view();
if (!frameView)
return nullptr;
Ref<Frame> protector(*frame);
VisibleSelection oldSelection = frame->selection().selection();
frame->selection().setSelection(VisibleSelection(*m_range));
float scaleFactor = (options & SnapshotOptionsExcludeDeviceScaleFactor) ? 1 : frame->page()->deviceScaleFactor();
IntRect paintRect = enclosingIntRect(m_range->absoluteBoundingRect());
IntSize backingStoreSize = paintRect.size();
backingStoreSize.scale(scaleFactor);
RefPtr<ShareableBitmap> backingStore = ShareableBitmap::createShareable(backingStoreSize, ShareableBitmap::SupportsAlpha);
if (!backingStore)
return nullptr;
auto graphicsContext = backingStore->createGraphicsContext();
graphicsContext->scale(scaleFactor);
paintRect.move(frameView->frameRect().x(), frameView->frameRect().y());
paintRect.moveBy(-frameView->scrollPosition());
graphicsContext->translate(-paintRect.x(), -paintRect.y());
PaintBehavior oldPaintBehavior = frameView->paintBehavior();
PaintBehavior paintBehavior = oldPaintBehavior | PaintBehaviorSelectionOnly | PaintBehaviorFlattenCompositingLayers;
if (options & SnapshotOptionsForceBlackText)
paintBehavior |= PaintBehaviorForceBlackText;
if (options & SnapshotOptionsForceWhiteText)
paintBehavior |= PaintBehaviorForceWhiteText;
frameView->setPaintBehavior(paintBehavior);
ownerDocument.updateLayout();
frameView->paint(*graphicsContext, paintRect);
frameView->setPaintBehavior(oldPaintBehavior);
frame->selection().setSelection(oldSelection);
return WebImage::create(backingStore);
}
void Page::setPageScaleFactor(float scale, const IntPoint& origin)
{
FrameView* view = mainFrame()->view();
if (scale == m_pageScaleFactor) {
if (view && view->scrollPosition() != origin)
view->setScrollPosition(origin);
return;
}
m_pageScaleFactor = scale;
if (view)
view->setVisibleContentScaleFactor(scale);
mainFrame()->deviceOrPageScaleFactorChanged();
if (view)
view->setViewportConstrainedObjectsNeedLayout();
if (view && view->scrollPosition() != origin)
view->setScrollPosition(origin);
}
void ScrollingCoordinator::updateMainFrameScrollPositionAndScrollLayerPosition(const IntPoint& scrollPosition)
{
FrameView* frameView = m_page->mainFrame()->view();
RenderView* renderView = m_page->mainFrame()->contentRenderer();
if (!renderView)
return;
GraphicsLayer* scrollLayer = renderView->compositor()->scrollLayer();
if (!scrollLayer)
return;
frameView->updateCompositingLayers();
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(scrollPosition);
frameView->setConstrainsScrollingToContentEdge(true);
scrollLayer->setPosition(-frameView->scrollPosition());
}
void PinchViewport::scrollIntoView(const FloatRect& rect)
{
if (!mainFrame() || !mainFrame()->view())
return;
FrameView* view = mainFrame()->view();
float centeringOffsetX = (visibleRect().width() - rect.width()) / 2;
float centeringOffsetY = (visibleRect().height() - rect.height()) / 2;
FloatPoint targetOffset(
rect.x() - centeringOffsetX - visibleRect().x(),
rect.y() - centeringOffsetY - visibleRect().y());
view->setScrollPosition(flooredIntPoint(targetOffset));
FloatPoint remainder = FloatPoint(targetOffset - view->scrollPosition());
move(remainder);
}
static bool pointWithScrollAndZoomIfPossible(const Document& document, IntPoint& point)
{
LocalFrame* frame = document.frame();
if (!frame)
return false;
FrameView* frameView = frame->view();
if (!frameView)
return false;
FloatPoint pointInDocument(point);
pointInDocument.scale(frame->pageZoomFactor(), frame->pageZoomFactor());
pointInDocument.moveBy(frameView->scrollPosition());
IntPoint roundedPointInDocument = roundedIntPoint(pointInDocument);
if (!frameView->visibleContentRect().contains(roundedPointInDocument))
return false;
point = roundedPointInDocument;
return true;
}
void Page::setPageScaleFactor(float scale, const IntPoint& origin)
{
FrameView* view = mainFrame()->view();
if (scale != m_pageScaleFactor) {
m_pageScaleFactor = scale;
if (view)
view->setVisibleContentScaleFactor(scale);
mainFrame()->deviceOrPageScaleFactorChanged();
m_chrome->client().deviceOrPageScaleFactorChanged();
if (view)
view->viewportConstrainedVisibleContentSizeChanged(true, true);
}
if (view && view->scrollPosition() != origin)
view->notifyScrollPositionChanged(origin);
}
void Page::setPageScaleFactor(float scale, const IntPoint& origin)
{
FrameView* view = mainFrame()->view();
bool oldProgrammaticScroll = view->inProgrammaticScroll();
view->setInProgrammaticScroll(false);
if (scale != m_pageScaleFactor) {
m_pageScaleFactor = scale;
if (view)
view->setVisibleContentScaleFactor(scale);
mainFrame()->deviceOrPageScaleFactorChanged();
if (view)
view->setViewportConstrainedObjectsNeedLayout();
}
if (view && view->scrollPosition() != origin)
view->notifyScrollPositionChanged(origin);
view->setInProgrammaticScroll(oldProgrammaticScroll);
}
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 AsyncScrollingCoordinator::updateScrollPositionAfterAsyncScroll(ScrollingNodeID scrollingNodeID, const FloatPoint& scrollPosition, bool programmaticScroll, SetOrSyncScrollingLayerPosition scrollingLayerPositionAction)
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame().view();
if (!frameView)
return;
// Main frame.
if (scrollingNodeID == frameView->scrollLayerID()) {
bool oldProgrammaticScroll = frameView->inProgrammaticScroll();
frameView->setInProgrammaticScroll(programmaticScroll);
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(roundedIntPoint(scrollPosition));
frameView->setConstrainsScrollingToContentEdge(true);
frameView->setInProgrammaticScroll(oldProgrammaticScroll);
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
GraphicsLayer* counterScrollingLayer = counterScrollingLayerForFrameView(frameView);
GraphicsLayer* insetClipLayer = insetClipLayerForFrameView(frameView);
GraphicsLayer* contentShadowLayer = contentShadowLayerForFrameView(frameView);
GraphicsLayer* scrolledContentsLayer = rootContentLayerForFrameView(frameView);
GraphicsLayer* headerLayer = headerLayerForFrameView(frameView);
GraphicsLayer* footerLayer = footerLayerForFrameView(frameView);
LayoutSize scrollOffsetForFixed = frameView->scrollOffsetForFixedPosition();
float topContentInset = frameView->topContentInset();
FloatPoint positionForInsetClipLayer = FloatPoint(0, FrameView::yPositionForInsetClipLayer(scrollPosition, topContentInset));
FloatPoint positionForContentsLayer = FloatPoint(scrolledContentsLayer->position().x(),
FrameView::yPositionForRootContentLayer(scrollPosition, topContentInset, frameView->headerHeight()));
FloatPoint positionForHeaderLayer = FloatPoint(scrollOffsetForFixed.width(), FrameView::yPositionForHeaderLayer(scrollPosition, topContentInset));
FloatPoint positionForFooterLayer = FloatPoint(scrollOffsetForFixed.width(),
FrameView::yPositionForFooterLayer(scrollPosition, topContentInset, frameView->totalContentsSize().height(), frameView->footerHeight()));
if (programmaticScroll || scrollingLayerPositionAction == SetScrollingLayerPosition) {
scrollLayer->setPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->setPosition(toLayoutPoint(scrollOffsetForFixed));
if (insetClipLayer)
insetClipLayer->setPosition(positionForInsetClipLayer);
if (contentShadowLayer)
contentShadowLayer->setPosition(positionForContentsLayer);
if (scrolledContentsLayer)
scrolledContentsLayer->setPosition(positionForContentsLayer);
if (headerLayer)
headerLayer->setPosition(positionForHeaderLayer);
if (footerLayer)
footerLayer->setPosition(positionForFooterLayer);
} else {
scrollLayer->syncPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->syncPosition(toLayoutPoint(scrollOffsetForFixed));
if (insetClipLayer)
insetClipLayer->syncPosition(positionForInsetClipLayer);
if (contentShadowLayer)
contentShadowLayer->syncPosition(positionForContentsLayer);
if (scrolledContentsLayer)
scrolledContentsLayer->syncPosition(positionForContentsLayer);
if (headerLayer)
headerLayer->syncPosition(positionForHeaderLayer);
if (footerLayer)
footerLayer->syncPosition(positionForFooterLayer);
LayoutRect viewportRect = frameView->viewportConstrainedVisibleContentRect();
syncChildPositions(viewportRect);
}
}
return;
}
// Overflow-scroll area.
if (ScrollableArea* scrollableArea = frameView->scrollableAreaForScrollLayerID(scrollingNodeID)) {
scrollableArea->setIsUserScroll(scrollingLayerPositionAction == SyncScrollingLayerPosition);
scrollableArea->scrollToOffsetWithoutAnimation(scrollPosition);
scrollableArea->setIsUserScroll(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);
}
}
}
