/* * Copyright (C) 2011, 2012 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "web/WebViewImpl.h" #include "core/CSSValueKeywords.h" #include "core/HTMLNames.h" #include "core/clipboard/DataObject.h" #include "core/dom/Document.h" #include "core/dom/DocumentUserGestureToken.h" #include "core/dom/Fullscreen.h" #include "core/dom/LayoutTreeBuilderTraversal.h" #include "core/dom/Text.h" #include "core/editing/EditingUtilities.h" #include "core/editing/Editor.h" #include "core/editing/FrameSelection.h" #include "core/editing/InputMethodController.h" #include "core/editing/iterators/TextIterator.h" #include "core/editing/markers/DocumentMarkerController.h" #include "core/editing/serializers/HTMLInterchange.h" #include "core/editing/serializers/Serialization.h" #include "core/events/KeyboardEvent.h" #include "core/events/UIEventWithKeyState.h" #include "core/events/WheelEvent.h" #include "core/fetch/UniqueIdentifier.h" #include "core/frame/BrowserControls.h" #include "core/frame/EventHandlerRegistry.h" #include "core/frame/FrameHost.h" #include "core/frame/FrameView.h" #include "core/frame/LocalFrame.h" #include "core/frame/PageScaleConstraintsSet.h" #include "core/frame/RemoteFrame.h" #include "core/frame/Settings.h" #include "core/frame/SmartClip.h" #include "core/frame/UseCounter.h" #include "core/frame/VisualViewport.h" #include "core/html/HTMLMediaElement.h" #include "core/html/HTMLPlugInElement.h" #include "core/html/HTMLTextAreaElement.h" #include "core/input/EventHandler.h" #include "core/input/TouchActionUtil.h" #include "core/layout/LayoutPart.h" #include "core/layout/TextAutosizer.h" #include "core/layout/api/LayoutViewItem.h" #include "core/layout/compositing/PaintLayerCompositor.h" #include "core/loader/FrameLoadRequest.h" #include "core/loader/FrameLoader.h" #include "core/loader/FrameLoaderClient.h" #include "core/loader/FrameLoaderStateMachine.h" #include "core/page/ContextMenuController.h" #include "core/page/ContextMenuProvider.h" #include "core/page/FocusController.h" #include "core/page/FrameTree.h" #include "core/page/Page.h" #include "core/page/PagePopupClient.h" #include "core/page/PointerLockController.h" #include "core/page/ScopedPageSuspender.h" #include "core/page/TouchDisambiguation.h" #include "core/page/scrolling/TopDocumentRootScrollerController.h" #include "core/paint/PaintLayer.h" #include "core/timing/DOMWindowPerformance.h" #include "core/timing/Performance.h" #include "modules/accessibility/AXObject.h" #include "modules/accessibility/AXObjectCacheImpl.h" #include "modules/credentialmanager/CredentialManagerClient.h" #include "modules/encryptedmedia/MediaKeysController.h" #include "modules/storage/StorageNamespaceController.h" #include "modules/webgl/WebGLRenderingContext.h" #include "platform/ContextMenu.h" #include "platform/ContextMenuItem.h" #include "platform/Cursor.h" #include "platform/Histogram.h" #include "platform/KeyboardCodes.h" #include "platform/PlatformGestureEvent.h" #include "platform/PlatformMouseEvent.h" #include "platform/RuntimeEnabledFeatures.h" #include "platform/UserGestureIndicator.h" #include "platform/exported/WebActiveGestureAnimation.h" #include "platform/fonts/FontCache.h" #include "platform/geometry/FloatRect.h" #include "platform/graphics/Color.h" #include "platform/graphics/CompositorMutatorClient.h" #include "platform/graphics/FirstPaintInvalidationTracking.h" #include "platform/graphics/GraphicsContext.h" #include "platform/graphics/Image.h" #include "platform/graphics/ImageBuffer.h" #include "platform/graphics/gpu/DrawingBuffer.h" #include "platform/graphics/paint/DrawingRecorder.h" #include "platform/image-decoders/ImageDecoder.h" #include "platform/scroll/ScrollbarTheme.h" #include "platform/tracing/TraceEvent.h" #include "platform/weborigin/SchemeRegistry.h" #include "public/platform/Platform.h" #include "public/platform/WebCompositeAndReadbackAsyncCallback.h" #include "public/platform/WebCompositorSupport.h" #include "public/platform/WebFloatPoint.h" #include "public/platform/WebGestureCurve.h" #include "public/platform/WebImage.h" #include "public/platform/WebLayerTreeView.h" #include "public/platform/WebScheduler.h" #include "public/platform/WebTextInputInfo.h" #include "public/platform/WebURLRequest.h" #include "public/platform/WebVector.h" #include "public/platform/WebViewScheduler.h" #include "public/web/WebAXObject.h" #include "public/web/WebActiveWheelFlingParameters.h" #include "public/web/WebAutofillClient.h" #include "public/web/WebConsoleMessage.h" #include "public/web/WebElement.h" #include "public/web/WebFrame.h" #include "public/web/WebFrameClient.h" #include "public/web/WebFrameWidget.h" #include "public/web/WebHitTestResult.h" #include "public/web/WebInputElement.h" #include "public/web/WebMeaningfulLayout.h" #include "public/web/WebMediaPlayerAction.h" #include "public/web/WebNode.h" #include "public/web/WebPlugin.h" #include "public/web/WebPluginAction.h" #include "public/web/WebRange.h" #include "public/web/WebScopedUserGesture.h" #include "public/web/WebSelection.h" #include "public/web/WebViewClient.h" #include "public/web/WebWindowFeatures.h" #include "web/CompositionUnderlineVectorBuilder.h" #include "web/CompositorMutatorImpl.h" #include "web/CompositorProxyClientImpl.h" #include "web/ContextFeaturesClientImpl.h" #include "web/ContextMenuAllowedScope.h" #include "web/DatabaseClientImpl.h" #include "web/DedicatedWorkerMessagingProxyProviderImpl.h" #include "web/DevToolsEmulator.h" #include "web/FullscreenController.h" #include "web/InspectorOverlay.h" #include "web/LinkHighlightImpl.h" #include "web/PageOverlay.h" #include "web/PrerendererClientImpl.h" #include "web/ResizeViewportAnchor.h" #include "web/RotationViewportAnchor.h" #include "web/SpeechRecognitionClientProxy.h" #include "web/StorageQuotaClientImpl.h" #include "web/ValidationMessageClientImpl.h" #include "web/WebDevToolsAgentImpl.h" #include "web/WebInputEventConversion.h" #include "web/WebInputMethodControllerImpl.h" #include "web/WebLocalFrameImpl.h" #include "web/WebPagePopupImpl.h" #include "web/WebPluginContainerImpl.h" #include "web/WebRemoteFrameImpl.h" #include "web/WebSettingsImpl.h" #include "wtf/AutoReset.h" #include "wtf/CurrentTime.h" #include "wtf/PtrUtil.h" #include "wtf/RefPtr.h" #include #if USE(DEFAULT_RENDER_THEME) #include "core/layout/LayoutThemeDefault.h" #endif // Get rid of WTF's pow define so we can use std::pow. #undef pow #include // for std::pow // The following constants control parameters for automated scaling of webpages // (such as due to a double tap gesture or find in page etc.). These are // experimentally determined. static const int touchPointPadding = 32; static const int nonUserInitiatedPointPadding = 11; static const float minScaleDifference = 0.01f; static const float doubleTapZoomContentDefaultMargin = 5; static const float doubleTapZoomContentMinimumMargin = 2; static const double doubleTapZoomAnimationDurationInSeconds = 0.25; static const float doubleTapZoomAlreadyLegibleRatio = 1.2f; static const double multipleTargetsZoomAnimationDurationInSeconds = 0.25; static const double findInPageAnimationDurationInSeconds = 0; // Constants for viewport anchoring on resize. static const float viewportAnchorCoordX = 0.5f; static const float viewportAnchorCoordY = 0; // Constants for zooming in on a focused text field. static const double scrollAndScaleAnimationDurationInSeconds = 0.2; static const int minReadableCaretHeight = 16; static const int minReadableCaretHeightForTextArea = 13; static const float minScaleChangeToTriggerZoom = 1.5f; static const float leftBoxRatio = 0.3f; static const int caretPadding = 10; namespace blink { // Change the text zoom level by kTextSizeMultiplierRatio each time the user // zooms text in or out (ie., change by 20%). The min and max values limit // text zoom to half and 3x the original text size. These three values match // those in Apple's port in WebKit/WebKit/WebView/WebView.mm const double WebView::textSizeMultiplierRatio = 1.2; const double WebView::minTextSizeMultiplier = 0.5; const double WebView::maxTextSizeMultiplier = 3.0; // Used to defer all page activity in cases where the embedder wishes to run // a nested event loop. Using a stack enables nesting of message loop // invocations. static Vector>& pageSuspenderStack() { DEFINE_STATIC_LOCAL(Vector>, suspenderStack, ()); return suspenderStack; } static bool shouldUseExternalPopupMenus = false; namespace { class EmptyEventListener final : public EventListener { public: static EmptyEventListener* create() { return new EmptyEventListener(); } bool operator==(const EventListener& other) const override { return this == &other; } private: EmptyEventListener() : EventListener(CPPEventListenerType) {} void handleEvent(ExecutionContext* executionContext, Event*) override {} }; class ColorOverlay final : public PageOverlay::Delegate { public: explicit ColorOverlay(WebColor color) : m_color(color) {} private: void paintPageOverlay(const PageOverlay& pageOverlay, GraphicsContext& graphicsContext, const WebSize& size) const override { if (DrawingRecorder::useCachedDrawingIfPossible( graphicsContext, pageOverlay, DisplayItem::kPageOverlay)) return; FloatRect rect(0, 0, size.width, size.height); DrawingRecorder drawingRecorder(graphicsContext, pageOverlay, DisplayItem::kPageOverlay, rect); graphicsContext.fillRect(rect, m_color); } WebColor m_color; }; } // namespace // WebView ---------------------------------------------------------------- WebView* WebView::create(WebViewClient* client, WebPageVisibilityState visibilityState) { // Pass the WebViewImpl's self-reference to the caller. return WebViewImpl::create(client, visibilityState); } WebViewImpl* WebViewImpl::create(WebViewClient* client, WebPageVisibilityState visibilityState) { // Pass the WebViewImpl's self-reference to the caller. return adoptRef(new WebViewImpl(client, visibilityState)).leakRef(); } void WebView::setUseExternalPopupMenus(bool useExternalPopupMenus) { shouldUseExternalPopupMenus = useExternalPopupMenus; } void WebView::updateVisitedLinkState(unsigned long long linkHash) { Page::visitedStateChanged(linkHash); } void WebView::resetVisitedLinkState(bool invalidateVisitedLinkHashes) { Page::allVisitedStateChanged(invalidateVisitedLinkHashes); } void WebView::willEnterModalLoop() { pageSuspenderStack().append(makeUnique()); } void WebView::didExitModalLoop() { DCHECK(pageSuspenderStack().size()); pageSuspenderStack().pop_back(); } void WebViewImpl::setMainFrame(WebFrame* frame) { frame->toImplBase()->initializeCoreFrame(&page()->frameHost(), 0, nullAtom, nullAtom); } void WebViewImpl::setCredentialManagerClient( WebCredentialManagerClient* webCredentialManagerClient) { DCHECK(m_page); provideCredentialManagerClientTo( *m_page, new CredentialManagerClient(webCredentialManagerClient)); } void WebViewImpl::setPrerendererClient( WebPrerendererClient* prerendererClient) { DCHECK(m_page); providePrerendererClientTo(*m_page, new PrerendererClientImpl(prerendererClient)); } void WebViewImpl::setSpellCheckClient(WebSpellCheckClient* spellCheckClient) { m_spellCheckClient = spellCheckClient; } // static HashSet& WebViewImpl::allInstances() { DEFINE_STATIC_LOCAL(HashSet, allInstances, ()); return allInstances; } WebViewImpl::WebViewImpl(WebViewClient* client, WebPageVisibilityState visibilityState) : m_client(client), m_spellCheckClient(nullptr), m_chromeClientImpl(ChromeClientImpl::create(this)), m_contextMenuClientImpl(this), m_editorClientImpl(this), m_spellCheckerClientImpl(this), m_storageClientImpl(this), m_shouldAutoResize(false), m_zoomLevel(0), m_minimumZoomLevel(zoomFactorToZoomLevel(minTextSizeMultiplier)), m_maximumZoomLevel(zoomFactorToZoomLevel(maxTextSizeMultiplier)), m_zoomFactorForDeviceScaleFactor(0.f), m_maximumLegibleScale(1), m_doubleTapZoomPageScaleFactor(0), m_doubleTapZoomPending(false), m_enableFakePageScaleAnimationForTesting(false), m_fakePageScaleAnimationPageScaleFactor(0), m_fakePageScaleAnimationUseAnchor(false), m_ignoreInputEvents(false), m_compositorDeviceScaleFactorOverride(0), m_suppressNextKeypressEvent(false), m_imeAcceptEvents(true), m_devToolsEmulator(nullptr), m_isTransparent(false), m_tabsToLinks(false), m_layerTreeView(nullptr), m_rootLayer(nullptr), m_rootGraphicsLayer(nullptr), m_visualViewportContainerLayer(nullptr), m_matchesHeuristicsForGpuRasterization(false), m_flingModifier(0), m_flingSourceDevice(WebGestureDeviceUninitialized), m_fullscreenController(FullscreenController::create(this)), m_baseBackgroundColor(Color::white), m_backgroundColorOverride(Color::transparent), m_zoomFactorOverride(0), m_userGestureObserved(false), m_shouldDispatchFirstVisuallyNonEmptyLayout(false), m_shouldDispatchFirstLayoutAfterFinishedParsing(false), m_shouldDispatchFirstLayoutAfterFinishedLoading(false), m_displayMode(WebDisplayModeBrowser), m_elasticOverscroll(FloatSize()), m_mutator(nullptr), m_scheduler(wrapUnique(Platform::current() ->currentThread() ->scheduler() ->createWebViewScheduler(this, this) .release())), m_lastFrameTimeMonotonic(0), m_overrideCompositorVisibility(false) { Page::PageClients pageClients; pageClients.chromeClient = m_chromeClientImpl.get(); pageClients.contextMenuClient = &m_contextMenuClientImpl; pageClients.editorClient = &m_editorClientImpl; pageClients.spellCheckerClient = &m_spellCheckerClientImpl; m_page = Page::createOrdinary(pageClients); MediaKeysController::provideMediaKeysTo(*m_page, &m_mediaKeysClientImpl); provideSpeechRecognitionTo( *m_page, SpeechRecognitionClientProxy::create( client ? client->speechRecognizer() : nullptr)); provideContextFeaturesTo(*m_page, ContextFeaturesClientImpl::create()); provideDatabaseClientTo(*m_page, DatabaseClientImpl::create()); provideStorageQuotaClientTo(*m_page, StorageQuotaClientImpl::create()); m_page->setValidationMessageClient( ValidationMessageClientImpl::create(*this)); provideDedicatedWorkerMessagingProxyProviderTo( *m_page, DedicatedWorkerMessagingProxyProviderImpl::create()); StorageNamespaceController::provideStorageNamespaceTo(*m_page, &m_storageClientImpl); setVisibilityState(visibilityState, true); initializeLayerTreeView(); m_devToolsEmulator = DevToolsEmulator::create(this); allInstances().add(this); m_pageImportanceSignals.setObserver(client); m_resizeViewportAnchor = new ResizeViewportAnchor(*m_page); } WebViewImpl::~WebViewImpl() { DCHECK(!m_page); // Each highlight uses m_owningWebViewImpl->m_linkHighlightsTimeline // in destructor. m_linkHighlightsTimeline might be destroyed earlier // than m_linkHighlights. DCHECK(m_linkHighlights.isEmpty()); } WebViewImpl::UserGestureNotifier::UserGestureNotifier(WebViewImpl* view) // TODO(kenrb, alexmos): |m_frame| should be set to the local root frame, // not the main frame. See crbug.com/589894. : m_frame(view->mainFrameImpl()), m_userGestureObserved(&view->m_userGestureObserved) { DCHECK(m_userGestureObserved); } WebViewImpl::UserGestureNotifier::~UserGestureNotifier() { if (!*m_userGestureObserved && m_frame && m_frame->frame()->document()->hasReceivedUserGesture()) { *m_userGestureObserved = true; if (m_frame && m_frame->autofillClient()) m_frame->autofillClient()->firstUserGestureObserved(); } } WebDevToolsAgentImpl* WebViewImpl::mainFrameDevToolsAgentImpl() { WebLocalFrameImpl* mainFrame = mainFrameImpl(); return mainFrame ? mainFrame->devToolsAgentImpl() : nullptr; } InspectorOverlay* WebViewImpl::inspectorOverlay() { if (WebDevToolsAgentImpl* devtools = mainFrameDevToolsAgentImpl()) return devtools->overlay(); return nullptr; } WebLocalFrameImpl* WebViewImpl::mainFrameImpl() const { return m_page && m_page->mainFrame() && m_page->mainFrame()->isLocalFrame() ? WebLocalFrameImpl::fromFrame(m_page->deprecatedLocalMainFrame()) : nullptr; } bool WebViewImpl::tabKeyCyclesThroughElements() const { DCHECK(m_page); return m_page->tabKeyCyclesThroughElements(); } void WebViewImpl::setTabKeyCyclesThroughElements(bool value) { if (m_page) m_page->setTabKeyCyclesThroughElements(value); } void WebViewImpl::handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent& event) { m_client->setMouseOverURL(WebURL()); PageWidgetEventHandler::handleMouseLeave(mainFrame, event); } void WebViewImpl::handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent& event) { // If there is a popup open, close it as the user is clicking on the page // (outside of the popup). We also save it so we can prevent a click on an // element from immediately reopening the same popup. RefPtr pagePopup; if (event.button == WebMouseEvent::Button::Left) { pagePopup = m_pagePopup; hidePopups(); DCHECK(!m_pagePopup); } // Take capture on a mouse down on a plugin so we can send it mouse events. // If the hit node is a plugin but a scrollbar is over it don't start mouse // capture because it will interfere with the scrollbar receiving events. IntPoint point(event.x, event.y); if (event.button == WebMouseEvent::Button::Left && m_page->mainFrame()->isLocalFrame()) { point = m_page->deprecatedLocalMainFrame()->view()->rootFrameToContents(point); HitTestResult result( m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint( point)); result.setToShadowHostIfInUserAgentShadowRoot(); Node* hitNode = result.innerNodeOrImageMapImage(); if (!result.scrollbar() && hitNode && hitNode->layoutObject() && hitNode->layoutObject()->isEmbeddedObject()) { m_mouseCaptureNode = hitNode; TRACE_EVENT_ASYNC_BEGIN0("input", "capturing mouse", this); } } PageWidgetEventHandler::handleMouseDown(mainFrame, event); if (event.button == WebMouseEvent::Button::Left && m_mouseCaptureNode) m_mouseCaptureGestureToken = mainFrame.eventHandler().takeLastMouseDownGestureToken(); if (m_pagePopup && pagePopup && m_pagePopup->hasSamePopupClient(pagePopup.get())) { // That click triggered a page popup that is the same as the one we just // closed. It needs to be closed. cancelPagePopup(); } // Dispatch the contextmenu event regardless of if the click was swallowed. if (!page()->settings().showContextMenuOnMouseUp()) { #if OS(MACOSX) if (event.button == WebMouseEvent::Button::Right || (event.button == WebMouseEvent::Button::Left && event.modifiers & WebMouseEvent::ControlKey)) mouseContextMenu(event); #else if (event.button == WebMouseEvent::Button::Right) mouseContextMenu(event); #endif } } void WebViewImpl::setDisplayMode(WebDisplayMode mode) { m_displayMode = mode; if (!mainFrameImpl() || !mainFrameImpl()->frameView()) return; mainFrameImpl()->frameView()->setDisplayMode(mode); } void WebViewImpl::mouseContextMenu(const WebMouseEvent& event) { if (!mainFrameImpl() || !mainFrameImpl()->frameView()) return; m_page->contextMenuController().clearContextMenu(); PlatformMouseEventBuilder pme(mainFrameImpl()->frameView(), event); // Find the right target frame. See issue 1186900. HitTestResult result = hitTestResultForRootFramePos(pme.position()); Frame* targetFrame; if (result.innerNodeOrImageMapImage()) targetFrame = result.innerNodeOrImageMapImage()->document().frame(); else targetFrame = m_page->focusController().focusedOrMainFrame(); if (!targetFrame->isLocalFrame()) return; LocalFrame* targetLocalFrame = toLocalFrame(targetFrame); #if OS(WIN) targetLocalFrame->view()->setCursor(pointerCursor()); #endif { ContextMenuAllowedScope scope; targetLocalFrame->eventHandler().sendContextMenuEvent(pme, nullptr); } // Actually showing the context menu is handled by the ContextMenuClient // implementation... } void WebViewImpl::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event) { PageWidgetEventHandler::handleMouseUp(mainFrame, event); if (page()->settings().showContextMenuOnMouseUp()) { // Dispatch the contextmenu event regardless of if the click was swallowed. // On Mac/Linux, we handle it on mouse down, not up. if (event.button == WebMouseEvent::Button::Right) mouseContextMenu(event); } } WebInputEventResult WebViewImpl::handleMouseWheel( LocalFrame& mainFrame, const WebMouseWheelEvent& event) { // Halt an in-progress fling on a wheel tick. if (!event.hasPreciseScrollingDeltas) endActiveFlingAnimation(); hidePopups(); return PageWidgetEventHandler::handleMouseWheel(mainFrame, event); } WebGestureEvent WebViewImpl::createGestureScrollEventFromFling( WebInputEvent::Type type, WebGestureDevice sourceDevice) const { WebGestureEvent gestureEvent; gestureEvent.type = type; gestureEvent.sourceDevice = sourceDevice; gestureEvent.timeStampSeconds = WTF::monotonicallyIncreasingTime(); gestureEvent.x = m_positionOnFlingStart.x; gestureEvent.y = m_positionOnFlingStart.y; gestureEvent.globalX = m_globalPositionOnFlingStart.x; gestureEvent.globalY = m_globalPositionOnFlingStart.y; gestureEvent.modifiers = m_flingModifier; return gestureEvent; } bool WebViewImpl::scrollBy(const WebFloatSize& delta, const WebFloatSize& velocity) { DCHECK_NE(m_flingSourceDevice, WebGestureDeviceUninitialized); if (!m_page || !m_page->mainFrame() || !m_page->mainFrame()->isLocalFrame() || !m_page->deprecatedLocalMainFrame()->view()) return false; if (m_flingSourceDevice == WebGestureDeviceTouchpad) { WebMouseWheelEvent syntheticWheel; const float tickDivisor = WheelEvent::TickMultiplier; syntheticWheel.type = WebInputEvent::MouseWheel; syntheticWheel.timeStampSeconds = WTF::monotonicallyIncreasingTime(); syntheticWheel.deltaX = delta.width; syntheticWheel.deltaY = delta.height; syntheticWheel.wheelTicksX = delta.width / tickDivisor; syntheticWheel.wheelTicksY = delta.height / tickDivisor; syntheticWheel.hasPreciseScrollingDeltas = true; syntheticWheel.x = m_positionOnFlingStart.x; syntheticWheel.y = m_positionOnFlingStart.y; syntheticWheel.globalX = m_globalPositionOnFlingStart.x; syntheticWheel.globalY = m_globalPositionOnFlingStart.y; syntheticWheel.modifiers = m_flingModifier; if (handleMouseWheel(*m_page->deprecatedLocalMainFrame(), syntheticWheel) != WebInputEventResult::NotHandled) return true; // TODO(dtapuska): Remove these GSB/GSE sequences when trackpad latching is // implemented; see crbug.com/526463. WebGestureEvent syntheticScrollBegin = createGestureScrollEventFromFling( WebInputEvent::GestureScrollBegin, WebGestureDeviceTouchpad); syntheticScrollBegin.data.scrollBegin.deltaXHint = delta.width; syntheticScrollBegin.data.scrollBegin.deltaYHint = delta.height; syntheticScrollBegin.data.scrollBegin.inertialPhase = WebGestureEvent::MomentumPhase; handleGestureEvent(syntheticScrollBegin); WebGestureEvent syntheticScrollUpdate = createGestureScrollEventFromFling( WebInputEvent::GestureScrollUpdate, WebGestureDeviceTouchpad); syntheticScrollUpdate.data.scrollUpdate.deltaX = delta.width; syntheticScrollUpdate.data.scrollUpdate.deltaY = delta.height; syntheticScrollUpdate.data.scrollUpdate.velocityX = velocity.width; syntheticScrollUpdate.data.scrollUpdate.velocityY = velocity.height; syntheticScrollUpdate.data.scrollUpdate.inertialPhase = WebGestureEvent::MomentumPhase; bool scrollUpdateHandled = handleGestureEvent(syntheticScrollUpdate) != WebInputEventResult::NotHandled; WebGestureEvent syntheticScrollEnd = createGestureScrollEventFromFling( WebInputEvent::GestureScrollEnd, WebGestureDeviceTouchpad); syntheticScrollEnd.data.scrollEnd.inertialPhase = WebGestureEvent::MomentumPhase; handleGestureEvent(syntheticScrollEnd); return scrollUpdateHandled; } else { WebGestureEvent syntheticGestureEvent = createGestureScrollEventFromFling( WebInputEvent::GestureScrollUpdate, WebGestureDeviceTouchscreen); syntheticGestureEvent.data.scrollUpdate.preventPropagation = true; syntheticGestureEvent.data.scrollUpdate.deltaX = delta.width; syntheticGestureEvent.data.scrollUpdate.deltaY = delta.height; syntheticGestureEvent.data.scrollUpdate.velocityX = velocity.width; syntheticGestureEvent.data.scrollUpdate.velocityY = velocity.height; syntheticGestureEvent.data.scrollUpdate.inertialPhase = WebGestureEvent::MomentumPhase; return handleGestureEvent(syntheticGestureEvent) != WebInputEventResult::NotHandled; } } WebInputEventResult WebViewImpl::handleGestureEvent( const WebGestureEvent& event) { if (!m_client) return WebInputEventResult::NotHandled; WebInputEventResult eventResult = WebInputEventResult::NotHandled; bool eventCancelled = false; // for disambiguation // Special handling for slow-path fling gestures. switch (event.type) { case WebInputEvent::GestureFlingStart: { if (mainFrameImpl() ->frame() ->eventHandler() .isScrollbarHandlingGestures()) break; endActiveFlingAnimation(); m_client->cancelScheduledContentIntents(); m_positionOnFlingStart = WebPoint(event.x, event.y); m_globalPositionOnFlingStart = WebPoint(event.globalX, event.globalY); m_flingModifier = event.modifiers; m_flingSourceDevice = event.sourceDevice; DCHECK_NE(m_flingSourceDevice, WebGestureDeviceUninitialized); std::unique_ptr flingCurve = wrapUnique(Platform::current()->createFlingAnimationCurve( event.sourceDevice, WebFloatPoint(event.data.flingStart.velocityX, event.data.flingStart.velocityY), WebSize())); DCHECK(flingCurve); m_gestureAnimation = WebActiveGestureAnimation::createAtAnimationStart( std::move(flingCurve), this); mainFrameImpl()->frameWidget()->scheduleAnimation(); eventResult = WebInputEventResult::HandledSystem; // Plugins may need to see GestureFlingStart to balance // GestureScrollBegin (since the former replaces GestureScrollEnd when // transitioning to a fling). PlatformGestureEventBuilder platformEvent(mainFrameImpl()->frameView(), event); // TODO(dtapuska): Why isn't the response used? mainFrameImpl()->frame()->eventHandler().handleGestureScrollEvent( platformEvent); m_client->didHandleGestureEvent(event, eventCancelled); return WebInputEventResult::HandledSystem; } case WebInputEvent::GestureFlingCancel: if (endActiveFlingAnimation()) eventResult = WebInputEventResult::HandledSuppressed; m_client->didHandleGestureEvent(event, eventCancelled); return eventResult; default: break; } PlatformGestureEventBuilder platformEvent(mainFrameImpl()->frameView(), event); // Special handling for double tap and scroll events as we don't want to // hit test for them. switch (event.type) { case WebInputEvent::GestureDoubleTap: if (m_webSettings->doubleTapToZoomEnabled() && minimumPageScaleFactor() != maximumPageScaleFactor()) { m_client->cancelScheduledContentIntents(); animateDoubleTapZoom(platformEvent.position()); } // GestureDoubleTap is currently only used by Android for zooming. For // WebCore, GestureTap with tap count = 2 is used instead. So we drop // GestureDoubleTap here. eventResult = WebInputEventResult::HandledSystem; m_client->didHandleGestureEvent(event, eventCancelled); return eventResult; case WebInputEvent::GestureScrollBegin: m_client->cancelScheduledContentIntents(); case WebInputEvent::GestureScrollEnd: case WebInputEvent::GestureScrollUpdate: case WebInputEvent::GestureFlingStart: // Scrolling-related gesture events invoke EventHandler recursively for // each frame down the chain, doing a single-frame hit-test per frame. // This matches handleWheelEvent. Perhaps we could simplify things by // rewriting scroll handling to work inner frame out, and then unify with // other gesture events. eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureScrollEvent( platformEvent); m_client->didHandleGestureEvent(event, eventCancelled); return eventResult; case WebInputEvent::GesturePinchBegin: case WebInputEvent::GesturePinchEnd: case WebInputEvent::GesturePinchUpdate: return WebInputEventResult::NotHandled; default: break; } // Hit test across all frames and do touch adjustment as necessary for the // event type. GestureEventWithHitTestResults targetedEvent = m_page->deprecatedLocalMainFrame()->eventHandler().targetGestureEvent( platformEvent); // Handle link highlighting outside the main switch to avoid getting lost in // the complicated set of cases handled below. switch (event.type) { case WebInputEvent::GestureShowPress: // Queue a highlight animation, then hand off to regular handler. enableTapHighlightAtPoint(targetedEvent); break; case WebInputEvent::GestureTapCancel: case WebInputEvent::GestureTap: case WebInputEvent::GestureLongPress: for (size_t i = 0; i < m_linkHighlights.size(); ++i) m_linkHighlights[i]->startHighlightAnimationIfNeeded(); break; default: break; } switch (event.type) { case WebInputEvent::GestureTap: { // If there is a popup open, close it as the user is clicking on the page // (outside of the popup). We also save it so we can prevent a tap on an // element from immediately reopening the same popup. RefPtr pagePopup = m_pagePopup; hidePopups(); DCHECK(!m_pagePopup); m_client->cancelScheduledContentIntents(); if (detectContentOnTouch(targetedEvent)) { eventResult = WebInputEventResult::HandledSystem; break; } // Don't trigger a disambiguation popup on sites designed for mobile // devices. Instead, assume that the page has been designed with big // enough buttons and links. Don't trigger a disambiguation popup when // screencasting, since it's implemented outside of compositor pipeline // and is not being screencasted itself. This leads to bad user // experience. WebDevToolsAgentImpl* devTools = mainFrameDevToolsAgentImpl(); VisualViewport& visualViewport = page()->frameHost().visualViewport(); bool screencastEnabled = devTools && devTools->screencastEnabled(); if (event.data.tap.width > 0 && !visualViewport.shouldDisableDesktopWorkarounds() && !screencastEnabled) { IntRect boundingBox(visualViewport.viewportToRootFrame( IntRect(event.x - event.data.tap.width / 2, event.y - event.data.tap.height / 2, event.data.tap.width, event.data.tap.height))); // TODO(bokan): We shouldn't pass details of the VisualViewport offset // to render_view_impl. crbug.com/459591 WebSize visualViewportOffset = flooredIntSize(visualViewport.scrollOffset()); if (m_webSettings->multiTargetTapNotificationEnabled()) { Vector goodTargets; HeapVector> highlightNodes; findGoodTouchTargets(boundingBox, mainFrameImpl()->frame(), goodTargets, highlightNodes); // FIXME: replace touch adjustment code when numberOfGoodTargets == 1? // Single candidate case is currently handled by: // https://bugs.webkit.org/show_bug.cgi?id=85101 if (goodTargets.size() >= 2 && m_client && m_client->didTapMultipleTargets(visualViewportOffset, boundingBox, goodTargets)) { enableTapHighlights(highlightNodes); for (size_t i = 0; i < m_linkHighlights.size(); ++i) m_linkHighlights[i]->startHighlightAnimationIfNeeded(); eventResult = WebInputEventResult::HandledSystem; eventCancelled = true; break; } } } eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent( targetedEvent); if (m_pagePopup && pagePopup && m_pagePopup->hasSamePopupClient(pagePopup.get())) { // The tap triggered a page popup that is the same as the one we just // closed. It needs to be closed. cancelPagePopup(); } break; } case WebInputEvent::GestureTwoFingerTap: case WebInputEvent::GestureLongPress: case WebInputEvent::GestureLongTap: { if (!mainFrameImpl() || !mainFrameImpl()->frameView()) break; m_client->cancelScheduledContentIntents(); m_page->contextMenuController().clearContextMenu(); { ContextMenuAllowedScope scope; eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent( targetedEvent); } break; } case WebInputEvent::GestureShowPress: m_client->cancelScheduledContentIntents(); case WebInputEvent::GestureTapDown: case WebInputEvent::GestureTapCancel: case WebInputEvent::GestureTapUnconfirmed: { eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent( targetedEvent); break; } default: NOTREACHED(); } m_client->didHandleGestureEvent(event, eventCancelled); return eventResult; } WebInputEventResult WebViewImpl::handleSyntheticWheelFromTouchpadPinchEvent( const WebGestureEvent& pinchEvent) { DCHECK_EQ(pinchEvent.type, WebInputEvent::GesturePinchUpdate); // For pinch gesture events, match typical trackpad behavior on Windows by // sending fake wheel events with the ctrl modifier set when we see trackpad // pinch gestures. Ideally we'd someday get a platform 'pinch' event and // send that instead. WebMouseWheelEvent wheelEvent; wheelEvent.type = WebInputEvent::MouseWheel; wheelEvent.timeStampSeconds = pinchEvent.timeStampSeconds; wheelEvent.windowX = wheelEvent.x = pinchEvent.x; wheelEvent.windowY = wheelEvent.y = pinchEvent.y; wheelEvent.globalX = pinchEvent.globalX; wheelEvent.globalY = pinchEvent.globalY; wheelEvent.modifiers = pinchEvent.modifiers | WebInputEvent::ControlKey; wheelEvent.deltaX = 0; // The function to convert scales to deltaY values is designed to be // compatible with websites existing use of wheel events, and with existing // Windows trackpad behavior. In particular, we want: // - deltas should accumulate via addition: f(s1*s2)==f(s1)+f(s2) // - deltas should invert via negation: f(1/s) == -f(s) // - zoom in should be positive: f(s) > 0 iff s > 1 // - magnitude roughly matches wheels: f(2) > 25 && f(2) < 100 // - a formula that's relatively easy to use from JavaScript // Note that 'wheel' event deltaY values have their sign inverted. So to // convert a wheel deltaY back to a scale use Math.exp(-deltaY/100). DCHECK_GT(pinchEvent.data.pinchUpdate.scale, 0); wheelEvent.deltaY = 100.0f * log(pinchEvent.data.pinchUpdate.scale); wheelEvent.hasPreciseScrollingDeltas = true; wheelEvent.wheelTicksX = 0; wheelEvent.wheelTicksY = pinchEvent.data.pinchUpdate.scale > 1 ? 1 : -1; return handleInputEvent(wheelEvent); } void WebViewImpl::transferActiveWheelFlingAnimation( const WebActiveWheelFlingParameters& parameters) { TRACE_EVENT0("blink", "WebViewImpl::transferActiveWheelFlingAnimation"); DCHECK(!m_gestureAnimation); m_positionOnFlingStart = parameters.point; m_globalPositionOnFlingStart = parameters.globalPoint; m_flingModifier = parameters.modifiers; std::unique_ptr curve = wrapUnique(Platform::current()->createFlingAnimationCurve( parameters.sourceDevice, WebFloatPoint(parameters.delta), parameters.cumulativeScroll)); DCHECK(curve); m_gestureAnimation = WebActiveGestureAnimation::createWithTimeOffset( std::move(curve), this, parameters.startTime); DCHECK_NE(parameters.sourceDevice, WebGestureDeviceUninitialized); m_flingSourceDevice = parameters.sourceDevice; mainFrameImpl()->frameWidget()->scheduleAnimation(); } bool WebViewImpl::endActiveFlingAnimation() { if (m_gestureAnimation) { m_gestureAnimation.reset(); m_flingSourceDevice = WebGestureDeviceUninitialized; if (m_layerTreeView) m_layerTreeView->didStopFlinging(); return true; } return false; } bool WebViewImpl::startPageScaleAnimation(const IntPoint& targetPosition, bool useAnchor, float newScale, double durationInSeconds) { VisualViewport& visualViewport = page()->frameHost().visualViewport(); WebPoint clampedPoint = targetPosition; if (!useAnchor) { clampedPoint = visualViewport.clampDocumentOffsetAtScale(targetPosition, newScale); if (!durationInSeconds) { setPageScaleFactor(newScale); FrameView* view = mainFrameImpl()->frameView(); if (view && view->getScrollableArea()) { view->getScrollableArea()->setScrollOffset( ScrollOffset(clampedPoint.x, clampedPoint.y), ProgrammaticScroll); } return false; } } if (useAnchor && newScale == pageScaleFactor()) return false; if (m_enableFakePageScaleAnimationForTesting) { m_fakePageScaleAnimationTargetPosition = targetPosition; m_fakePageScaleAnimationUseAnchor = useAnchor; m_fakePageScaleAnimationPageScaleFactor = newScale; } else { if (!m_layerTreeView) return false; m_layerTreeView->startPageScaleAnimation(targetPosition, useAnchor, newScale, durationInSeconds); } return true; } void WebViewImpl::enableFakePageScaleAnimationForTesting(bool enable) { m_enableFakePageScaleAnimationForTesting = enable; } void WebViewImpl::setShowFPSCounter(bool show) { if (m_layerTreeView) { TRACE_EVENT0("blink", "WebViewImpl::setShowFPSCounter"); m_layerTreeView->setShowFPSCounter(show); } } void WebViewImpl::setShowPaintRects(bool show) { if (m_layerTreeView) { TRACE_EVENT0("blink", "WebViewImpl::setShowPaintRects"); m_layerTreeView->setShowPaintRects(show); } setFirstPaintInvalidationTrackingEnabledForShowPaintRects(show); } void WebViewImpl::setShowDebugBorders(bool show) { if (m_layerTreeView) m_layerTreeView->setShowDebugBorders(show); } void WebViewImpl::setShowScrollBottleneckRects(bool show) { if (m_layerTreeView) m_layerTreeView->setShowScrollBottleneckRects(show); } void WebViewImpl::acceptLanguagesChanged() { if (m_client) FontCache::acceptLanguagesChanged(m_client->acceptLanguages()); if (!page()) return; page()->acceptLanguagesChanged(); } void WebViewImpl::ReportIntervention(const WebString& message) { if (!mainFrameImpl()) return; WebConsoleMessage consoleMessage(WebConsoleMessage::LevelWarning, message); mainFrameImpl()->addMessageToConsole(consoleMessage); } float WebViewImpl::expensiveBackgroundThrottlingCPUBudget() { return settingsImpl()->expensiveBackgroundThrottlingCPUBudget(); } float WebViewImpl::expensiveBackgroundThrottlingInitialBudget() { return settingsImpl()->expensiveBackgroundThrottlingInitialBudget(); } float WebViewImpl::expensiveBackgroundThrottlingMaxBudget() { return settingsImpl()->expensiveBackgroundThrottlingMaxBudget(); } float WebViewImpl::expensiveBackgroundThrottlingMaxDelay() { return settingsImpl()->expensiveBackgroundThrottlingMaxDelay(); } WebInputEventResult WebViewImpl::handleKeyEvent(const WebKeyboardEvent& event) { DCHECK((event.type == WebInputEvent::RawKeyDown) || (event.type == WebInputEvent::KeyDown) || (event.type == WebInputEvent::KeyUp)); TRACE_EVENT2("input", "WebViewImpl::handleKeyEvent", "type", WebInputEvent::GetName(event.type), "text", String(event.text).utf8()); // Halt an in-progress fling on a key event. endActiveFlingAnimation(); // Please refer to the comments explaining the m_suppressNextKeypressEvent // member. // The m_suppressNextKeypressEvent is set if the KeyDown is handled by // Webkit. A keyDown event is typically associated with a keyPress(char) // event and a keyUp event. We reset this flag here as this is a new keyDown // event. m_suppressNextKeypressEvent = false; // If there is a popup, it should be the one processing the event, not the // page. if (m_pagePopup) { m_pagePopup->handleKeyEvent(event); // We need to ignore the next Char event after this otherwise pressing // enter when selecting an item in the popup will go to the page. if (WebInputEvent::RawKeyDown == event.type) m_suppressNextKeypressEvent = true; return WebInputEventResult::HandledSystem; } Frame* focusedFrame = focusedCoreFrame(); if (focusedFrame && focusedFrame->isRemoteFrame()) { WebRemoteFrameImpl* webFrame = WebRemoteFrameImpl::fromFrame(*toRemoteFrame(focusedFrame)); webFrame->client()->forwardInputEvent(&event); return WebInputEventResult::HandledSystem; } if (!focusedFrame || !focusedFrame->isLocalFrame()) return WebInputEventResult::NotHandled; LocalFrame* frame = toLocalFrame(focusedFrame); WebInputEventResult result = frame->eventHandler().keyEvent(event); if (result != WebInputEventResult::NotHandled) { if (WebInputEvent::RawKeyDown == event.type) { // Suppress the next keypress event unless the focused node is a plugin // node. (Flash needs these keypress events to handle non-US keyboards.) Element* element = focusedElement(); if (element && element->layoutObject() && element->layoutObject()->isEmbeddedObject()) { if (event.windowsKeyCode == VKEY_TAB) { // If the plugin supports keyboard focus then we should not send a tab // keypress event. Widget* widget = toLayoutPart(element->layoutObject())->widget(); if (widget && widget->isPluginContainer()) { WebPluginContainerImpl* plugin = toWebPluginContainerImpl(widget); if (plugin && plugin->supportsKeyboardFocus()) m_suppressNextKeypressEvent = true; } } } else { m_suppressNextKeypressEvent = true; } } return result; } #if !OS(MACOSX) const WebInputEvent::Type contextMenuKeyTriggeringEventType = #if OS(WIN) WebInputEvent::KeyUp; #else WebInputEvent::RawKeyDown; #endif const WebInputEvent::Type shiftF10TriggeringEventType = WebInputEvent::RawKeyDown; bool isUnmodifiedMenuKey = !(event.modifiers & WebInputEvent::InputModifiers) && event.windowsKeyCode == VKEY_APPS; bool isShiftF10 = (event.modifiers & WebInputEvent::InputModifiers) == WebInputEvent::ShiftKey && event.windowsKeyCode == VKEY_F10; if ((isUnmodifiedMenuKey && event.type == contextMenuKeyTriggeringEventType) || (isShiftF10 && event.type == shiftF10TriggeringEventType)) { sendContextMenuEvent(event); return WebInputEventResult::HandledSystem; } #endif // !OS(MACOSX) return WebInputEventResult::NotHandled; } WebInputEventResult WebViewImpl::handleCharEvent( const WebKeyboardEvent& event) { DCHECK_EQ(event.type, WebInputEvent::Char); TRACE_EVENT1("input", "WebViewImpl::handleCharEvent", "text", String(event.text).utf8()); // Please refer to the comments explaining the m_suppressNextKeypressEvent // member. The m_suppressNextKeypressEvent is set if the KeyDown is // handled by Webkit. A keyDown event is typically associated with a // keyPress(char) event and a keyUp event. We reset this flag here as it // only applies to the current keyPress event. bool suppress = m_suppressNextKeypressEvent; m_suppressNextKeypressEvent = false; // If there is a popup, it should be the one processing the event, not the // page. if (m_pagePopup) return m_pagePopup->handleKeyEvent(event); LocalFrame* frame = toLocalFrame(focusedCoreFrame()); if (!frame) return suppress ? WebInputEventResult::HandledSuppressed : WebInputEventResult::NotHandled; EventHandler& handler = frame->eventHandler(); if (!event.isCharacterKey()) return WebInputEventResult::HandledSuppressed; // Accesskeys are triggered by char events and can't be suppressed. if (handler.handleAccessKey(event)) return WebInputEventResult::HandledSystem; // Safari 3.1 does not pass off windows system key messages (WM_SYSCHAR) to // the eventHandler::keyEvent. We mimic this behavior on all platforms since // for now we are converting other platform's key events to windows key // events. if (event.isSystemKey) return WebInputEventResult::NotHandled; if (suppress) return WebInputEventResult::HandledSuppressed; WebInputEventResult result = handler.keyEvent(event); if (result != WebInputEventResult::NotHandled) return result; return WebInputEventResult::NotHandled; } WebRect WebViewImpl::computeBlockBound(const WebPoint& pointInRootFrame, bool ignoreClipping) { if (!mainFrameImpl()) return WebRect(); // Use the point-based hit test to find the node. IntPoint point = mainFrameImpl()->frameView()->rootFrameToContents( IntPoint(pointInRootFrame.x, pointInRootFrame.y)); HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | (ignoreClipping ? HitTestRequest::IgnoreClipping : 0); HitTestResult result = mainFrameImpl()->frame()->eventHandler().hitTestResultAtPoint(point, hitType); result.setToShadowHostIfInUserAgentShadowRoot(); Node* node = result.innerNodeOrImageMapImage(); if (!node) return WebRect(); // Find the block type node based on the hit node. // FIXME: This wants to walk flat tree with // LayoutTreeBuilderTraversal::parent(). while (node && (!node->layoutObject() || node->layoutObject()->isInline())) node = LayoutTreeBuilderTraversal::parent(*node); // Return the bounding box in the root frame's coordinate space. if (node) { IntRect pointInRootFrame = node->Node::pixelSnappedBoundingBox(); LocalFrame* frame = node->document().frame(); return frame->view()->contentsToRootFrame(pointInRootFrame); } return WebRect(); } WebRect WebViewImpl::widenRectWithinPageBounds(const WebRect& source, int targetMargin, int minimumMargin) { WebSize maxSize; if (mainFrame()) maxSize = mainFrame()->contentsSize(); IntSize scrollOffset; if (mainFrame()) scrollOffset = mainFrame()->scrollOffset(); int leftMargin = targetMargin; int rightMargin = targetMargin; const int absoluteSourceX = source.x + scrollOffset.width(); if (leftMargin > absoluteSourceX) { leftMargin = absoluteSourceX; rightMargin = std::max(leftMargin, minimumMargin); } const int maximumRightMargin = maxSize.width - (source.width + absoluteSourceX); if (rightMargin > maximumRightMargin) { rightMargin = maximumRightMargin; leftMargin = std::min(leftMargin, std::max(rightMargin, minimumMargin)); } const int newWidth = source.width + leftMargin + rightMargin; const int newX = source.x - leftMargin; DCHECK_GE(newWidth, 0); DCHECK_LE(scrollOffset.width() + newX + newWidth, maxSize.width); return WebRect(newX, source.y, newWidth, source.height); } float WebViewImpl::maximumLegiblePageScale() const { // Pages should be as legible as on desktop when at dpi scale, so no // need to zoom in further when automatically determining zoom level // (after double tap, find in page, etc), though the user should still // be allowed to manually pinch zoom in further if they desire. if (page()) return m_maximumLegibleScale * page()->settings().accessibilityFontScaleFactor(); return m_maximumLegibleScale; } void WebViewImpl::computeScaleAndScrollForBlockRect( const WebPoint& hitPointInRootFrame, const WebRect& blockRectInRootFrame, float padding, float defaultScaleWhenAlreadyLegible, float& scale, WebPoint& scroll) { scale = pageScaleFactor(); scroll.x = scroll.y = 0; WebRect rect = blockRectInRootFrame; if (!rect.isEmpty()) { float defaultMargin = doubleTapZoomContentDefaultMargin; float minimumMargin = doubleTapZoomContentMinimumMargin; // We want the margins to have the same physical size, which means we // need to express them in post-scale size. To do that we'd need to know // the scale we're scaling to, but that depends on the margins. Instead // we express them as a fraction of the target rectangle: this will be // correct if we end up fully zooming to it, and won't matter if we // don't. rect = widenRectWithinPageBounds( rect, static_cast(defaultMargin * rect.width / m_size.width), static_cast(minimumMargin * rect.width / m_size.width)); // Fit block to screen, respecting limits. scale = static_cast(m_size.width) / rect.width; scale = std::min(scale, maximumLegiblePageScale()); if (pageScaleFactor() < defaultScaleWhenAlreadyLegible) scale = std::max(scale, defaultScaleWhenAlreadyLegible); scale = clampPageScaleFactorToLimits(scale); } // FIXME: If this is being called for auto zoom during find in page, // then if the user manually zooms in it'd be nice to preserve the // relative increase in zoom they caused (if they zoom out then it's ok // to zoom them back in again). This isn't compatible with our current // double-tap zoom strategy (fitting the containing block to the screen) // though. float screenWidth = m_size.width / scale; float screenHeight = m_size.height / scale; // Scroll to vertically align the block. if (rect.height < screenHeight) { // Vertically center short blocks. rect.y -= 0.5 * (screenHeight - rect.height); } else { // Ensure position we're zooming to (+ padding) isn't off the bottom of // the screen. rect.y = std::max(rect.y, hitPointInRootFrame.y + padding - screenHeight); } // Otherwise top align the block. // Do the same thing for horizontal alignment. if (rect.width < screenWidth) rect.x -= 0.5 * (screenWidth - rect.width); else rect.x = std::max(rect.x, hitPointInRootFrame.x + padding - screenWidth); scroll.x = rect.x; scroll.y = rect.y; scale = clampPageScaleFactorToLimits(scale); scroll = mainFrameImpl()->frameView()->rootFrameToContents(scroll); scroll = page()->frameHost().visualViewport().clampDocumentOffsetAtScale( scroll, scale); } static Node* findCursorDefiningAncestor(Node* node, LocalFrame* frame) { // Go up the tree to find the node that defines a mouse cursor style while (node) { if (node->layoutObject()) { ECursor cursor = node->layoutObject()->style()->cursor(); if (cursor != ECursor::Auto || frame->eventHandler().useHandCursor(node, node->isLink())) break; } node = LayoutTreeBuilderTraversal::parent(*node); } return node; } static bool showsHandCursor(Node* node, LocalFrame* frame) { if (!node || !node->layoutObject()) return false; ECursor cursor = node->layoutObject()->style()->cursor(); return cursor == ECursor::Pointer || (cursor == ECursor::Auto && frame->eventHandler().useHandCursor(node, node->isLink())); } Node* WebViewImpl::bestTapNode( const GestureEventWithHitTestResults& targetedTapEvent) { TRACE_EVENT0("input", "WebViewImpl::bestTapNode"); if (!m_page || !m_page->mainFrame()) return nullptr; Node* bestTouchNode = targetedTapEvent.hitTestResult().innerNode(); if (!bestTouchNode) return nullptr; // We might hit something like an image map that has no layoutObject on it // Walk up the tree until we have a node with an attached layoutObject while (!bestTouchNode->layoutObject()) { bestTouchNode = LayoutTreeBuilderTraversal::parent(*bestTouchNode); if (!bestTouchNode) return nullptr; } // Editable nodes should not be highlighted (e.g., ) if (hasEditableStyle(*bestTouchNode)) return nullptr; Node* cursorDefiningAncestor = findCursorDefiningAncestor( bestTouchNode, m_page->deprecatedLocalMainFrame()); // We show a highlight on tap only when the current node shows a hand cursor if (!cursorDefiningAncestor || !showsHandCursor(cursorDefiningAncestor, m_page->deprecatedLocalMainFrame())) { return nullptr; } // We should pick the largest enclosing node with hand cursor set. We do this // by first jumping up to cursorDefiningAncestor (which is already known to // have hand cursor set). Then we locate the next cursor-defining ancestor up // in the the tree and repeat the jumps as long as the node has hand cursor // set. do { bestTouchNode = cursorDefiningAncestor; cursorDefiningAncestor = findCursorDefiningAncestor( LayoutTreeBuilderTraversal::parent(*bestTouchNode), m_page->deprecatedLocalMainFrame()); } while (cursorDefiningAncestor && showsHandCursor(cursorDefiningAncestor, m_page->deprecatedLocalMainFrame())); return bestTouchNode; } void WebViewImpl::enableTapHighlightAtPoint( const GestureEventWithHitTestResults& targetedTapEvent) { Node* touchNode = bestTapNode(targetedTapEvent); HeapVector> highlightNodes; highlightNodes.append(touchNode); enableTapHighlights(highlightNodes); } void WebViewImpl::enableTapHighlights( HeapVector>& highlightNodes) { if (highlightNodes.isEmpty()) return; // Always clear any existing highlight when this is invoked, even if we // don't get a new target to highlight. m_linkHighlights.clear(); for (size_t i = 0; i < highlightNodes.size(); ++i) { Node* node = highlightNodes[i]; if (!node || !node->layoutObject()) continue; Color highlightColor = node->layoutObject()->style()->tapHighlightColor(); // Safari documentation for -webkit-tap-highlight-color says if the // specified color has 0 alpha, then tap highlighting is disabled. // http://developer.apple.com/library/safari/#documentation/appleapplications/reference/safaricssref/articles/standardcssproperties.html if (!highlightColor.alpha()) continue; m_linkHighlights.append(LinkHighlightImpl::create(node, this)); } updateAllLifecyclePhases(); } void WebViewImpl::animateDoubleTapZoom(const IntPoint& pointInRootFrame) { if (!mainFrameImpl()) return; WebRect blockBounds = computeBlockBound(pointInRootFrame, false); float scale; WebPoint scroll; computeScaleAndScrollForBlockRect( pointInRootFrame, blockBounds, touchPointPadding, minimumPageScaleFactor() * doubleTapZoomAlreadyLegibleRatio, scale, scroll); bool stillAtPreviousDoubleTapScale = (pageScaleFactor() == m_doubleTapZoomPageScaleFactor && m_doubleTapZoomPageScaleFactor != minimumPageScaleFactor()) || m_doubleTapZoomPending; bool scaleUnchanged = fabs(pageScaleFactor() - scale) < minScaleDifference; bool shouldZoomOut = blockBounds.isEmpty() || scaleUnchanged || stillAtPreviousDoubleTapScale; bool isAnimating; if (shouldZoomOut) { scale = minimumPageScaleFactor(); IntPoint targetPosition = mainFrameImpl()->frameView()->rootFrameToContents(pointInRootFrame); isAnimating = startPageScaleAnimation( targetPosition, true, scale, doubleTapZoomAnimationDurationInSeconds); } else { isAnimating = startPageScaleAnimation( scroll, false, scale, doubleTapZoomAnimationDurationInSeconds); } // TODO(dglazkov): The only reason why we're using isAnimating and not just // checking for m_layerTreeView->hasPendingPageScaleAnimation() is because of // fake page scale animation plumbing for testing, which doesn't actually // initiate a page scale animation. if (isAnimating) { m_doubleTapZoomPageScaleFactor = scale; m_doubleTapZoomPending = true; } } void WebViewImpl::zoomToFindInPageRect(const WebRect& rectInRootFrame) { if (!mainFrameImpl()) return; WebRect blockBounds = computeBlockBound( WebPoint(rectInRootFrame.x + rectInRootFrame.width / 2, rectInRootFrame.y + rectInRootFrame.height / 2), true); if (blockBounds.isEmpty()) { // Keep current scale (no need to scroll as x,y will normally already // be visible). FIXME: Revisit this if it isn't always true. return; } float scale; WebPoint scroll; computeScaleAndScrollForBlockRect( WebPoint(rectInRootFrame.x, rectInRootFrame.y), blockBounds, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll); startPageScaleAnimation(scroll, false, scale, findInPageAnimationDurationInSeconds); } bool WebViewImpl::zoomToMultipleTargetsRect(const WebRect& rectInRootFrame) { if (!mainFrameImpl()) return false; float scale; WebPoint scroll; computeScaleAndScrollForBlockRect( WebPoint(rectInRootFrame.x, rectInRootFrame.y), rectInRootFrame, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll); if (scale <= pageScaleFactor()) return false; startPageScaleAnimation(scroll, false, scale, multipleTargetsZoomAnimationDurationInSeconds); return true; } void WebViewImpl::hasTouchEventHandlers(bool hasTouchHandlers) { if (m_client) m_client->hasTouchEventHandlers(hasTouchHandlers); } bool WebViewImpl::hasTouchEventHandlersAt(const WebPoint& point) { // FIXME: Implement this. Note that the point must be divided by // pageScaleFactor. return true; } #if !OS(MACOSX) // Mac has no way to open a context menu based on a keyboard event. WebInputEventResult WebViewImpl::sendContextMenuEvent( const WebKeyboardEvent& event) { // The contextMenuController() holds onto the last context menu that was // popped up on the page until a new one is created. We need to clear // this menu before propagating the event through the DOM so that we can // detect if we create a new menu for this event, since we won't create // a new menu if the DOM swallows the event and the defaultEventHandler does // not run. page()->contextMenuController().clearContextMenu(); { ContextMenuAllowedScope scope; Frame* focusedFrame = page()->focusController().focusedOrMainFrame(); if (!focusedFrame->isLocalFrame()) return WebInputEventResult::NotHandled; // Firefox reveal focus based on "keydown" event but not "contextmenu" // event, we match FF. if (Element* focusedElement = toLocalFrame(focusedFrame)->document()->focusedElement()) focusedElement->scrollIntoViewIfNeeded(); return toLocalFrame(focusedFrame) ->eventHandler() .sendContextMenuEventForKey(nullptr); } } #endif void WebViewImpl::showContextMenuAtPoint(float x, float y, ContextMenuProvider* menuProvider) { if (!page()->mainFrame()->isLocalFrame()) return; { ContextMenuAllowedScope scope; page()->contextMenuController().clearContextMenu(); page()->contextMenuController().showContextMenuAtPoint( page()->deprecatedLocalMainFrame(), x, y, menuProvider); } } void WebViewImpl::showContextMenuForElement(WebElement element) { if (!page()) return; page()->contextMenuController().clearContextMenu(); { ContextMenuAllowedScope scope; if (LocalFrame* focusedFrame = toLocalFrame(page()->focusController().focusedOrMainFrame())) focusedFrame->eventHandler().sendContextMenuEventForKey( element.unwrap()); } } PagePopup* WebViewImpl::openPagePopup(PagePopupClient* client) { DCHECK(client); if (hasOpenedPopup()) hidePopups(); DCHECK(!m_pagePopup); WebWidget* popupWidget = m_client->createPopupMenu(WebPopupTypePage); // createPopupMenu returns nullptr if this renderer process is about to die. if (!popupWidget) return nullptr; m_pagePopup = toWebPagePopupImpl(popupWidget); if (!m_pagePopup->initialize(this, client)) { m_pagePopup->closePopup(); m_pagePopup = nullptr; } enablePopupMouseWheelEventListener(); return m_pagePopup.get(); } void WebViewImpl::closePagePopup(PagePopup* popup) { DCHECK(popup); WebPagePopupImpl* popupImpl = toWebPagePopupImpl(popup); DCHECK_EQ(m_pagePopup.get(), popupImpl); if (m_pagePopup.get() != popupImpl) return; m_pagePopup->closePopup(); } void WebViewImpl::cleanupPagePopup() { m_pagePopup = nullptr; disablePopupMouseWheelEventListener(); } void WebViewImpl::cancelPagePopup() { if (m_pagePopup) m_pagePopup->cancel(); } void WebViewImpl::enablePopupMouseWheelEventListener() { // TODO(kenrb): Popup coordination for out-of-process iframes needs to be // added. Because of the early return here a select element // popup can remain visible even when the element underneath it is // scrolled to a new position. This is part of a larger set of issues with // popups. // See https://crbug.com/566130 if (!mainFrameImpl()) return; DCHECK(!m_popupMouseWheelEventListener); Document* document = mainFrameImpl()->frame()->document(); DCHECK(document); // We register an empty event listener, EmptyEventListener, so that mouse // wheel events get sent to the WebView. m_popupMouseWheelEventListener = EmptyEventListener::create(); document->addEventListener(EventTypeNames::mousewheel, m_popupMouseWheelEventListener, false); } void WebViewImpl::disablePopupMouseWheelEventListener() { // TODO(kenrb): Concerns the same as in enablePopupMouseWheelEventListener. // See https://crbug.com/566130 if (!mainFrameImpl()) return; DCHECK(m_popupMouseWheelEventListener); Document* document = mainFrameImpl()->frame()->document(); DCHECK(document); // Document may have already removed the event listener, for instance, due // to a navigation, but remove it anyway. document->removeEventListener(EventTypeNames::mousewheel, m_popupMouseWheelEventListener.release(), false); } LocalDOMWindow* WebViewImpl::pagePopupWindow() const { return m_pagePopup ? m_pagePopup->window() : nullptr; } Frame* WebViewImpl::focusedCoreFrame() const { return m_page ? m_page->focusController().focusedOrMainFrame() : nullptr; } WebViewImpl* WebViewImpl::fromPage(Page* page) { return page ? static_cast(page->chromeClient().webView()) : nullptr; } // WebWidget ------------------------------------------------------------------ void WebViewImpl::close() { WebDevToolsAgentImpl::webViewImplClosed(this); DCHECK(allInstances().contains(this)); allInstances().remove(this); if (m_page) { // Initiate shutdown for the entire frameset. This will cause a lot of // notifications to be sent. m_page->willBeDestroyed(); m_page.clear(); } // Reset the delegate to prevent notifications being sent as we're being // deleted. m_client = nullptr; deref(); // Balances ref() acquired in WebView::create } WebSize WebViewImpl::size() { return m_size; } void WebViewImpl::resizeVisualViewport(const WebSize& newSize) { page()->frameHost().visualViewport().setSize(newSize); page()->frameHost().visualViewport().clampToBoundaries(); } void WebViewImpl::performResize() { // We'll keep the initial containing block size from changing when the top // controls hide so that the ICB will always be the same size as the // viewport with the browser controls shown. IntSize ICBSize = m_size; if (RuntimeEnabledFeatures::inertTopControlsEnabled() && browserControls().permittedState() == WebBrowserControlsBoth && !browserControls().shrinkViewport()) ICBSize.expand(0, -browserControls().height()); pageScaleConstraintsSet().didChangeInitialContainingBlockSize(ICBSize); updatePageDefinedViewportConstraints( mainFrameImpl()->frame()->document()->viewportDescription()); updateMainFrameLayoutSize(); page()->frameHost().visualViewport().setSize(m_size); if (mainFrameImpl()->frameView()) { mainFrameImpl()->frameView()->setInitialViewportSize(ICBSize); if (!mainFrameImpl()->frameView()->needsLayout()) postLayoutResize(mainFrameImpl()); } } void WebViewImpl::updateBrowserControlsState(WebBrowserControlsState constraint, WebBrowserControlsState current, bool animate) { WebBrowserControlsState oldPermittedState = browserControls().permittedState(); browserControls().updateConstraintsAndState(constraint, current, animate); // If the controls are going from a locked to an unlocked state, or // vice-versa, then we need to force a recompute of the ICB size since that // depends on the permitted browser controls state. if (oldPermittedState != constraint && (oldPermittedState == WebBrowserControlsBoth || constraint == WebBrowserControlsBoth)) { performResize(); } if (m_layerTreeView) m_layerTreeView->updateBrowserControlsState(constraint, current, animate); } void WebViewImpl::didUpdateBrowserControls() { if (m_layerTreeView) { m_layerTreeView->setBrowserControlsShownRatio( browserControls().shownRatio()); m_layerTreeView->setBrowserControlsHeight( browserControls().height(), browserControls().shrinkViewport()); } WebLocalFrameImpl* mainFrame = mainFrameImpl(); if (!mainFrame) return; FrameView* view = mainFrame->frameView(); if (!view) return; VisualViewport& visualViewport = page()->frameHost().visualViewport(); { // This object will save the current visual viewport offset w.r.t. the // document and restore it when the object goes out of scope. It's // needed since the browser controls adjustment will change the maximum // scroll offset and we may need to reposition them to keep the user's // apparent position unchanged. ResizeViewportAnchor::ResizeScope resizeScope(*m_resizeViewportAnchor); float browserControlsViewportAdjustment = browserControls().layoutHeight() - browserControls().contentOffset(); visualViewport.setBrowserControlsAdjustment( browserControlsViewportAdjustment); // Since the FrameView is sized to be the visual viewport at minimum // scale, its adjustment must also be scaled by the minimum scale. view->setBrowserControlsViewportAdjustment( browserControlsViewportAdjustment / minimumPageScaleFactor()); } } BrowserControls& WebViewImpl::browserControls() { return page()->frameHost().browserControls(); } void WebViewImpl::resizeViewWhileAnchored(float browserControlsHeight, bool browserControlsShrinkLayout) { DCHECK(mainFrameImpl()); browserControls().setHeight(browserControlsHeight, browserControlsShrinkLayout); { // Avoids unnecessary invalidations while various bits of state in // TextAutosizer are updated. TextAutosizer::DeferUpdatePageInfo deferUpdatePageInfo(page()); performResize(); } m_fullscreenController->updateSize(); // Update lifecyle phases immediately to recalculate the minimum scale limit // for rotation anchoring, and to make sure that no lifecycle states are // stale if this WebView is embedded in another one. updateAllLifecyclePhases(); } void WebViewImpl::resizeWithBrowserControls(const WebSize& newSize, float browserControlsHeight, bool browserControlsShrinkLayout) { if (m_shouldAutoResize) return; if (m_size == newSize && browserControls().height() == browserControlsHeight && browserControls().shrinkViewport() == browserControlsShrinkLayout) return; if (page()->mainFrame() && !page()->mainFrame()->isLocalFrame()) { // Viewport resize for a remote main frame does not require any // particular action, but the state needs to reflect the correct size // so that it can be used for initalization if the main frame gets // swapped to a LocalFrame at a later time. m_size = newSize; pageScaleConstraintsSet().didChangeInitialContainingBlockSize(m_size); page()->frameHost().visualViewport().setSize(m_size); return; } WebLocalFrameImpl* mainFrame = mainFrameImpl(); if (!mainFrame) return; FrameView* view = mainFrame->frameView(); if (!view) return; VisualViewport& visualViewport = page()->frameHost().visualViewport(); bool isRotation = page()->settings().mainFrameResizesAreOrientationChanges() && m_size.width && contentsSize().width() && newSize.width != m_size.width && !m_fullscreenController->isFullscreen(); m_size = newSize; FloatSize viewportAnchorCoords(viewportAnchorCoordX, viewportAnchorCoordY); if (isRotation) { RotationViewportAnchor anchor(*view, visualViewport, viewportAnchorCoords, pageScaleConstraintsSet()); resizeViewWhileAnchored(browserControlsHeight, browserControlsShrinkLayout); } else { ResizeViewportAnchor::ResizeScope resizeScope(*m_resizeViewportAnchor); resizeViewWhileAnchored(browserControlsHeight, browserControlsShrinkLayout); } sendResizeEventAndRepaint(); } void WebViewImpl::resize(const WebSize& newSize) { if (m_shouldAutoResize || m_size == newSize) return; resizeWithBrowserControls(newSize, browserControls().height(), browserControls().shrinkViewport()); } void WebViewImpl::didEnterFullscreen() { m_fullscreenController->didEnterFullscreen(); } void WebViewImpl::didExitFullscreen() { m_fullscreenController->didExitFullscreen(); } void WebViewImpl::didUpdateFullscreenSize() { m_fullscreenController->updateSize(); } void WebViewImpl::beginFrame(double lastFrameTimeMonotonic) { TRACE_EVENT1("blink", "WebViewImpl::beginFrame", "frameTime", lastFrameTimeMonotonic); DCHECK(lastFrameTimeMonotonic); // Create synthetic wheel events as necessary for fling. if (m_gestureAnimation) { if (m_gestureAnimation->animate(lastFrameTimeMonotonic)) mainFrameImpl()->frameWidget()->scheduleAnimation(); else { DCHECK_NE(m_flingSourceDevice, WebGestureDeviceUninitialized); WebGestureDevice lastFlingSourceDevice = m_flingSourceDevice; endActiveFlingAnimation(); PlatformGestureEvent endScrollEvent( PlatformEvent::GestureScrollEnd, m_positionOnFlingStart, m_globalPositionOnFlingStart, IntSize(), 0, PlatformEvent::NoModifiers, lastFlingSourceDevice == WebGestureDeviceTouchpad ? PlatformGestureSourceTouchpad : PlatformGestureSourceTouchscreen); endScrollEvent.setScrollGestureData(0, 0, ScrollByPrecisePixel, 0, 0, ScrollInertialPhaseMomentum, false, -1 /* null plugin id */); mainFrameImpl()->frame()->eventHandler().handleGestureScrollEnd( endScrollEvent); } } if (!mainFrameImpl()) return; m_lastFrameTimeMonotonic = lastFrameTimeMonotonic; DocumentLifecycle::AllowThrottlingScope throttlingScope( mainFrameImpl()->frame()->document()->lifecycle()); PageWidgetDelegate::animate(*m_page, lastFrameTimeMonotonic); } void WebViewImpl::updateAllLifecyclePhases() { TRACE_EVENT0("blink", "WebViewImpl::updateAllLifecyclePhases"); if (!mainFrameImpl()) return; DocumentLifecycle::AllowThrottlingScope throttlingScope( mainFrameImpl()->frame()->document()->lifecycle()); updateLayerTreeBackgroundColor(); PageWidgetDelegate::updateAllLifecyclePhases(*m_page, *mainFrameImpl()->frame()); if (InspectorOverlay* overlay = inspectorOverlay()) { overlay->updateAllLifecyclePhases(); // TODO(chrishtr): integrate paint into the overlay's lifecycle. if (overlay->pageOverlay() && overlay->pageOverlay()->graphicsLayer()) overlay->pageOverlay()->graphicsLayer()->paint(nullptr); } if (m_pageColorOverlay) m_pageColorOverlay->graphicsLayer()->paint(nullptr); // TODO(chrishtr): link highlights don't currently paint themselves, it's // still driven by cc. Fix this. for (size_t i = 0; i < m_linkHighlights.size(); ++i) m_linkHighlights[i]->updateGeometry(); if (FrameView* view = mainFrameImpl()->frameView()) { LocalFrame* frame = mainFrameImpl()->frame(); WebWidgetClient* client = WebLocalFrameImpl::fromFrame(frame)->frameWidget()->client(); if (m_shouldDispatchFirstVisuallyNonEmptyLayout && view->isVisuallyNonEmpty()) { m_shouldDispatchFirstVisuallyNonEmptyLayout = false; // TODO(esprehn): Move users of this callback to something // better, the heuristic for "visually non-empty" is bad. client->didMeaningfulLayout(WebMeaningfulLayout::VisuallyNonEmpty); } if (m_shouldDispatchFirstLayoutAfterFinishedParsing && frame->document()->hasFinishedParsing()) { m_shouldDispatchFirstLayoutAfterFinishedParsing = false; client->didMeaningfulLayout(WebMeaningfulLayout::FinishedParsing); } if (m_shouldDispatchFirstLayoutAfterFinishedLoading && frame->document()->isLoadCompleted()) { m_shouldDispatchFirstLayoutAfterFinishedLoading = false; client->didMeaningfulLayout(WebMeaningfulLayout::FinishedLoading); } } } void WebViewImpl::paint(WebCanvas* canvas, const WebRect& rect) { // This should only be used when compositing is not being used for this // WebView, and it is painting into the recording of its parent. DCHECK(!isAcceleratedCompositingActive()); double paintStart = currentTime(); PageWidgetDelegate::paint(*m_page, canvas, rect, *m_page->deprecatedLocalMainFrame()); double paintEnd = currentTime(); double pixelsPerSec = (rect.width * rect.height) / (paintEnd - paintStart); DEFINE_STATIC_LOCAL(CustomCountHistogram, softwarePaintDurationHistogram, ("Renderer4.SoftwarePaintDurationMS", 0, 120, 30)); softwarePaintDurationHistogram.count((paintEnd - paintStart) * 1000); DEFINE_STATIC_LOCAL(CustomCountHistogram, softwarePaintRateHistogram, ("Renderer4.SoftwarePaintMegapixPerSecond", 10, 210, 30)); softwarePaintRateHistogram.count(pixelsPerSec / 1000000); } #if OS(ANDROID) void WebViewImpl::paintIgnoringCompositing(WebCanvas* canvas, const WebRect& rect) { // This is called on a composited WebViewImpl, but we will ignore it, // producing all possible content of the WebViewImpl into the WebCanvas. DCHECK(isAcceleratedCompositingActive()); PageWidgetDelegate::paintIgnoringCompositing( *m_page, canvas, rect, *m_page->deprecatedLocalMainFrame()); } #endif void WebViewImpl::layoutAndPaintAsync( WebLayoutAndPaintAsyncCallback* callback) { m_layerTreeView->layoutAndPaintAsync(callback); } void WebViewImpl::compositeAndReadbackAsync( WebCompositeAndReadbackAsyncCallback* callback) { m_layerTreeView->compositeAndReadbackAsync(callback); } void WebViewImpl::themeChanged() { if (!page()) return; if (!page()->mainFrame()->isLocalFrame()) return; FrameView* view = page()->deprecatedLocalMainFrame()->view(); WebRect damagedRect(0, 0, m_size.width, m_size.height); view->invalidateRect(damagedRect); } void WebViewImpl::enterFullscreenForElement(Element* element) { m_fullscreenController->enterFullscreenForElement(element); } void WebViewImpl::exitFullscreen(LocalFrame* frame) { m_fullscreenController->exitFullscreen(frame); } bool WebViewImpl::hasHorizontalScrollbar() { return mainFrameImpl() ->frameView() ->layoutViewportScrollableArea() ->horizontalScrollbar(); } bool WebViewImpl::hasVerticalScrollbar() { return mainFrameImpl() ->frameView() ->layoutViewportScrollableArea() ->verticalScrollbar(); } const WebInputEvent* WebViewImpl::m_currentInputEvent = nullptr; WebInputEventResult WebViewImpl::handleInputEvent( const WebInputEvent& inputEvent) { // TODO(dcheng): The fact that this is getting called when there is no local // main frame is problematic and probably indicates a bug in the input event // routing code. if (!mainFrameImpl()) return WebInputEventResult::NotHandled; WebAutofillClient* autofillClient = mainFrameImpl()->autofillClient(); UserGestureNotifier notifier(this); // On the first input event since page load, |notifier| instructs the // autofill client to unblock values of password input fields of any forms // on the page. There is a single input event, GestureTap, which can both // be the first event after page load, and cause a form submission. In that // case, the form submission happens before the autofill client is told // to unblock the password values, and so the password values are not // submitted. To avoid that, GestureTap is handled explicitly: if (inputEvent.type == WebInputEvent::GestureTap && autofillClient) { m_userGestureObserved = true; autofillClient->firstUserGestureObserved(); } page()->frameHost().visualViewport().startTrackingPinchStats(); TRACE_EVENT1("input,rail", "WebViewImpl::handleInputEvent", "type", WebInputEvent::GetName(inputEvent.type)); // If a drag-and-drop operation is in progress, ignore input events. if (mainFrameImpl()->frameWidget()->doingDragAndDrop()) return WebInputEventResult::HandledSuppressed; if (m_devToolsEmulator->handleInputEvent(inputEvent)) return WebInputEventResult::HandledSuppressed; if (InspectorOverlay* overlay = inspectorOverlay()) { if (overlay->handleInputEvent(inputEvent)) return WebInputEventResult::HandledSuppressed; } // Report the event to be NOT processed by WebKit, so that the browser can // handle it appropriately. if (m_ignoreInputEvents) return WebInputEventResult::NotHandled; AutoReset currentEventChange(&m_currentInputEvent, &inputEvent); UIEventWithKeyState::clearNewTabModifierSetFromIsolatedWorld(); bool isPointerLocked = false; if (WebFrameWidgetBase* widget = mainFrameImpl()->frameWidget()) { if (WebWidgetClient* client = widget->client()) isPointerLocked = client->isPointerLocked(); } if (isPointerLocked && WebInputEvent::isMouseEventType(inputEvent.type)) { pointerLockMouseEvent(inputEvent); return WebInputEventResult::HandledSystem; } if (m_mouseCaptureNode && WebInputEvent::isMouseEventType(inputEvent.type)) { TRACE_EVENT1("input", "captured mouse event", "type", inputEvent.type); // Save m_mouseCaptureNode since mouseCaptureLost() will clear it. Node* node = m_mouseCaptureNode; // Not all platforms call mouseCaptureLost() directly. if (inputEvent.type == WebInputEvent::MouseUp) mouseCaptureLost(); std::unique_ptr gestureIndicator; AtomicString eventType; switch (inputEvent.type) { case WebInputEvent::MouseMove: eventType = EventTypeNames::mousemove; break; case WebInputEvent::MouseLeave: eventType = EventTypeNames::mouseout; break; case WebInputEvent::MouseDown: eventType = EventTypeNames::mousedown; gestureIndicator = wrapUnique( new UserGestureIndicator(DocumentUserGestureToken::create( &node->document(), UserGestureToken::NewGesture))); m_mouseCaptureGestureToken = gestureIndicator->currentToken(); break; case WebInputEvent::MouseUp: eventType = EventTypeNames::mouseup; gestureIndicator = wrapUnique( new UserGestureIndicator(m_mouseCaptureGestureToken.release())); break; default: NOTREACHED(); } node->dispatchMouseEvent( PlatformMouseEventBuilder( mainFrameImpl()->frameView(), static_cast(inputEvent)), eventType, static_cast(inputEvent).clickCount); return WebInputEventResult::HandledSystem; } // FIXME: This should take in the intended frame, not the local frame root. WebInputEventResult result = PageWidgetDelegate::handleInputEvent( *this, inputEvent, mainFrameImpl()->frame()); if (result != WebInputEventResult::NotHandled) return result; // Unhandled pinch events should adjust the scale. if (inputEvent.type == WebInputEvent::GesturePinchUpdate) { const WebGestureEvent& pinchEvent = static_cast(inputEvent); // For touchpad gestures synthesize a Windows-like wheel event // to send to any handlers that may exist. Not necessary for touchscreen // as touch events would have already been sent for the gesture. if (pinchEvent.sourceDevice == WebGestureDeviceTouchpad) { result = handleSyntheticWheelFromTouchpadPinchEvent(pinchEvent); if (result != WebInputEventResult::NotHandled) return result; } if (pinchEvent.data.pinchUpdate.zoomDisabled) return WebInputEventResult::NotHandled; if (page()->frameHost().visualViewport().magnifyScaleAroundAnchor( pinchEvent.data.pinchUpdate.scale, FloatPoint(pinchEvent.x, pinchEvent.y))) return WebInputEventResult::HandledSystem; } return WebInputEventResult::NotHandled; } void WebViewImpl::setCursorVisibilityState(bool isVisible) { if (m_page) m_page->setIsCursorVisible(isVisible); } void WebViewImpl::mouseCaptureLost() { TRACE_EVENT_ASYNC_END0("input", "capturing mouse", this); m_mouseCaptureNode = nullptr; } void WebViewImpl::setFocus(bool enable) { m_page->focusController().setFocused(enable); if (enable) { m_page->focusController().setActive(true); LocalFrame* focusedFrame = m_page->focusController().focusedFrame(); if (focusedFrame) { Element* element = focusedFrame->document()->focusedElement(); if (element && focusedFrame->selection().selection().isNone()) { // If the selection was cleared while the WebView was not // focused, then the focus element shows with a focus ring but // no caret and does respond to keyboard inputs. focusedFrame->document()->updateStyleAndLayoutTree(); if (element->isTextControl()) { element->updateFocusAppearance(SelectionBehaviorOnFocus::Restore); } else if (hasEditableStyle(*element)) { // updateFocusAppearance() selects all the text of // contentseditable DIVs. So we set the selection explicitly // instead. Note that this has the side effect of moving the // caret back to the beginning of the text. Position position(element, 0); focusedFrame->selection().setSelection( SelectionInDOMTree::Builder().collapse(position).build()); } } } m_imeAcceptEvents = true; } else { hidePopups(); // Clear focus on the currently focused frame if any. if (!m_page) return; LocalFrame* frame = m_page->mainFrame() && m_page->mainFrame()->isLocalFrame() ? m_page->deprecatedLocalMainFrame() : nullptr; if (!frame) return; LocalFrame* focusedFrame = focusedLocalFrameInWidget(); if (focusedFrame) { // Finish an ongoing composition to delete the composition node. if (focusedFrame->inputMethodController().hasComposition()) { WebAutofillClient* autofillClient = WebLocalFrameImpl::fromFrame(focusedFrame)->autofillClient(); if (autofillClient) autofillClient->setIgnoreTextChanges(true); // TODO(xiaochengh): The use of // updateStyleAndLayoutIgnorePendingStylesheets // needs to be audited. See http://crbug.com/590369 for more details. focusedFrame->document() ->updateStyleAndLayoutIgnorePendingStylesheets(); focusedFrame->inputMethodController().finishComposingText( InputMethodController::KeepSelection); if (autofillClient) autofillClient->setIgnoreTextChanges(false); } m_imeAcceptEvents = false; } } } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). WebRange WebViewImpl::compositionRange() { LocalFrame* focused = focusedLocalFrameAvailableForIme(); if (!focused) return WebRange(); const EphemeralRange range = focused->inputMethodController().compositionEphemeralRange(); if (range.isNull()) return WebRange(); Element* editable = focused->selection().rootEditableElementOrDocumentElement(); DCHECK(editable); // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets // needs to be audited. See http://crbug.com/590369 for more details. editable->document().updateStyleAndLayoutIgnorePendingStylesheets(); return PlainTextRange::create(*editable, range); } WebTextInputInfo WebViewImpl::textInputInfo() { LocalFrame* focused = focusedLocalFrameInWidget(); if (!focused) return WebTextInputInfo(); return focused->inputMethodController().textInputInfo(); } WebTextInputType WebViewImpl::textInputType() { LocalFrame* focused = focusedLocalFrameInWidget(); if (!focused) return WebTextInputTypeNone; return focused->inputMethodController().textInputType(); } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). bool WebViewImpl::selectionBounds(WebRect& anchor, WebRect& focus) const { const Frame* frame = focusedCoreFrame(); if (!frame || !frame->isLocalFrame()) return false; const LocalFrame* localFrame = toLocalFrame(frame); if (!localFrame) return false; FrameSelection& selection = localFrame->selection(); if (!selection.isAvailable() || selection.isNone()) { // plugins/mouse-capture-inside-shadow.html reaches here. return false; } // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets // needs to be audited. See http://crbug.com/590369 for more details. localFrame->document()->updateStyleAndLayoutIgnorePendingStylesheets(); DocumentLifecycle::DisallowTransitionScope disallowTransition( localFrame->document()->lifecycle()); if (selection.isCaret()) { anchor = focus = selection.absoluteCaretBounds(); } else { const EphemeralRange selectedRange = selection.selection().toNormalizedEphemeralRange(); if (selectedRange.isNull()) return false; anchor = localFrame->editor().firstRectForRange( EphemeralRange(selectedRange.startPosition())); focus = localFrame->editor().firstRectForRange( EphemeralRange(selectedRange.endPosition())); } anchor = localFrame->view()->contentsToViewport(anchor); focus = localFrame->view()->contentsToViewport(focus); if (!selection.selection().isBaseFirst()) std::swap(anchor, focus); return true; } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). WebPlugin* WebViewImpl::focusedPluginIfInputMethodSupported(LocalFrame* frame) { WebPluginContainerImpl* container = WebLocalFrameImpl::currentPluginContainer(frame); if (container && container->supportsInputMethod()) return container->plugin(); return nullptr; } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). bool WebViewImpl::selectionTextDirection(WebTextDirection& start, WebTextDirection& end) const { const LocalFrame* frame = focusedLocalFrameInWidget(); if (!frame) return false; const FrameSelection& selection = frame->selection(); if (!selection.isAvailable()) { // plugins/mouse-capture-inside-shadow.html reaches here. return false; } // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets // needs to be audited. See http://crbug.com/590369 for more details. frame->document()->updateStyleAndLayoutIgnorePendingStylesheets(); if (selection.selection().toNormalizedEphemeralRange().isNull()) return false; start = toWebTextDirection(primaryDirectionOf(*selection.start().anchorNode())); end = toWebTextDirection(primaryDirectionOf(*selection.end().anchorNode())); return true; } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). bool WebViewImpl::isSelectionAnchorFirst() const { const LocalFrame* frame = focusedLocalFrameInWidget(); if (!frame) return false; FrameSelection& selection = frame->selection(); if (!selection.isAvailable()) { // plugins/mouse-capture-inside-shadow.html reaches here. return false; } return selection.selection().isBaseFirst(); } WebColor WebViewImpl::backgroundColor() const { if (isTransparent()) return Color::transparent; if (!m_page) return m_baseBackgroundColor; if (!m_page->mainFrame()) return m_baseBackgroundColor; if (!m_page->mainFrame()->isLocalFrame()) return m_baseBackgroundColor; FrameView* view = m_page->deprecatedLocalMainFrame()->view(); return view->documentBackgroundColor().rgb(); } WebPagePopup* WebViewImpl::pagePopup() const { return m_pagePopup.get(); } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). WebRange WebViewImpl::caretOrSelectionRange() { const LocalFrame* focused = focusedLocalFrameInWidget(); if (!focused) return WebRange(); // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets // needs to be audited. See http://crbug.com/590369 for more details. focused->document()->updateStyleAndLayoutIgnorePendingStylesheets(); return focused->inputMethodController().getSelectionOffsets(); } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). void WebViewImpl::setTextDirection(WebTextDirection direction) { // The Editor::setBaseWritingDirection() function checks if we can change // the text direction of the selected node and updates its DOM "dir" // attribute and its CSS "direction" property. // So, we just call the function as Safari does. const LocalFrame* focused = focusedLocalFrameInWidget(); if (!focused) return; Editor& editor = focused->editor(); if (!editor.canEdit()) return; switch (direction) { case WebTextDirectionDefault: editor.setBaseWritingDirection(NaturalWritingDirection); break; case WebTextDirectionLeftToRight: editor.setBaseWritingDirection(LeftToRightWritingDirection); break; case WebTextDirectionRightToLeft: editor.setBaseWritingDirection(RightToLeftWritingDirection); break; default: NOTIMPLEMENTED(); break; } } bool WebViewImpl::isAcceleratedCompositingActive() const { return m_rootLayer; } void WebViewImpl::willCloseLayerTreeView() { if (m_linkHighlightsTimeline) { m_linkHighlights.clear(); detachCompositorAnimationTimeline(m_linkHighlightsTimeline.get()); m_linkHighlightsTimeline.reset(); } if (m_layerTreeView) page()->willCloseLayerTreeView(*m_layerTreeView); setRootLayer(nullptr); m_mutator = nullptr; m_layerTreeView = nullptr; } void WebViewImpl::didAcquirePointerLock() { if (page()) page()->pointerLockController().didAcquirePointerLock(); } void WebViewImpl::didNotAcquirePointerLock() { if (page()) page()->pointerLockController().didNotAcquirePointerLock(); } void WebViewImpl::didLosePointerLock() { m_pointerLockGestureToken.clear(); if (page()) page()->pointerLockController().didLosePointerLock(); } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). bool WebViewImpl::getCompositionCharacterBounds(WebVector& bounds) { WebRange range = compositionRange(); if (range.isEmpty()) return false; WebLocalFrame* frame = focusedFrame(); // Only consider frames whose local root is the main frame. For other // local frames which have different local roots, the corresponding // WebFrameWidget will handle this task. if (frame->localRoot() != mainFrameImpl()) return false; size_t characterCount = range.length(); size_t offset = range.startOffset(); WebVector result(characterCount); WebRect webrect; for (size_t i = 0; i < characterCount; ++i) { if (!frame->firstRectForCharacterRange(offset + i, 1, webrect)) { DLOG(ERROR) << "Could not retrieve character rectangle at " << i; return false; } result[i] = webrect; } bounds.swap(result); return true; } // TODO(ekaramad):This method is almost duplicated in WebFrameWidgetImpl as // well. This code needs to be refactored (http://crbug.com/629721). void WebViewImpl::applyReplacementRange(const WebRange& range) { if (WebLocalFrame* frame = focusedFrame()) frame->selectRange(range); } // WebView -------------------------------------------------------------------- WebSettingsImpl* WebViewImpl::settingsImpl() { if (!m_webSettings) m_webSettings = wrapUnique( new WebSettingsImpl(&m_page->settings(), m_devToolsEmulator.get())); DCHECK(m_webSettings); return m_webSettings.get(); } WebSettings* WebViewImpl::settings() { return settingsImpl(); } WebString WebViewImpl::pageEncoding() const { if (!m_page) return WebString(); if (!m_page->mainFrame()->isLocalFrame()) return WebString(); // FIXME: Is this check needed? if (!m_page->deprecatedLocalMainFrame()->document()->loader()) return WebString(); return m_page->deprecatedLocalMainFrame()->document()->encodingName(); } WebFrame* WebViewImpl::mainFrame() { return WebFrame::fromFrame(m_page ? m_page->mainFrame() : nullptr); } WebFrame* WebViewImpl::findFrameByName(const WebString& name, WebFrame* relativeToFrame) { // FIXME: Either this should only deal with WebLocalFrames or it should move // to WebFrame. if (!relativeToFrame) relativeToFrame = mainFrame(); Frame* frame = toWebLocalFrameImpl(relativeToFrame)->frame(); frame = frame->tree().find(name); if (!frame || !frame->isLocalFrame()) return nullptr; return WebLocalFrameImpl::fromFrame(toLocalFrame(frame)); } WebLocalFrame* WebViewImpl::focusedFrame() { Frame* frame = focusedCoreFrame(); // TODO(yabinh): focusedCoreFrame() should always return a local frame, and // the following check should be unnecessary. // See crbug.com/625068 if (!frame || !frame->isLocalFrame()) return nullptr; return WebLocalFrameImpl::fromFrame(toLocalFrame(frame)); } void WebViewImpl::setFocusedFrame(WebFrame* frame) { if (!frame) { // Clears the focused frame if any. Frame* focusedFrame = focusedCoreFrame(); if (focusedFrame && focusedFrame->isLocalFrame()) toLocalFrame(focusedFrame)->selection().setFocused(false); return; } LocalFrame* coreFrame = toWebLocalFrameImpl(frame)->frame(); coreFrame->page()->focusController().setFocusedFrame(coreFrame); } void WebViewImpl::focusDocumentView(WebFrame* frame) { // This is currently only used when replicating focus changes for // cross-process frames, and |notifyEmbedder| is disabled to avoid sending // duplicate frameFocused updates from FocusController to the browser // process, which already knows the latest focused frame. page()->focusController().focusDocumentView(frame->toImplBase()->frame(), false /* notifyEmbedder */); } void WebViewImpl::setInitialFocus(bool reverse) { if (!m_page) return; Frame* frame = page()->focusController().focusedOrMainFrame(); if (frame->isLocalFrame()) { if (Document* document = toLocalFrame(frame)->document()) document->clearFocusedElement(); } page()->focusController().setInitialFocus(reverse ? WebFocusTypeBackward : WebFocusTypeForward); } void WebViewImpl::clearFocusedElement() { Frame* frame = focusedCoreFrame(); if (!frame || !frame->isLocalFrame()) return; LocalFrame* localFrame = toLocalFrame(frame); Document* document = localFrame->document(); if (!document) return; Element* oldFocusedElement = document->focusedElement(); document->clearFocusedElement(); if (!oldFocusedElement) return; // If a text field has focus, we need to make sure the selection controller // knows to remove selection from it. Otherwise, the text field is still // processing keyboard events even though focus has been moved to the page and // keystrokes get eaten as a result. document->updateStyleAndLayoutTree(); if (hasEditableStyle(*oldFocusedElement) || oldFocusedElement->isTextControl()) localFrame->selection().clear(); } // TODO(dglazkov): Remove and replace with Node:hasEditableStyle. // http://crbug.com/612560 static bool isElementEditable(const Element* element) { element->document().updateStyleAndLayoutTree(); if (hasEditableStyle(*element)) return true; if (element->isTextControl()) { if (!toTextControlElement(element)->isDisabledOrReadOnly()) return true; } return equalIgnoringASCIICase(element->getAttribute(HTMLNames::roleAttr), "textbox"); } bool WebViewImpl::scrollFocusedEditableElementIntoRect( const WebRect& rectInViewport) { LocalFrame* frame = page()->mainFrame() && page()->mainFrame()->isLocalFrame() ? page()->deprecatedLocalMainFrame() : nullptr; Element* element = focusedElement(); if (!frame || !frame->view() || !element) return false; if (!isElementEditable(element)) return false; element->document().updateStyleAndLayoutIgnorePendingStylesheets(); bool zoomInToLegibleScale = m_webSettings->autoZoomFocusedNodeToLegibleScale() && !page()->frameHost().visualViewport().shouldDisableDesktopWorkarounds(); if (zoomInToLegibleScale) { // When deciding whether to zoom in on a focused text box, we should decide // not to zoom in if the user won't be able to zoom out. e.g if the textbox // is within a touch-action: none container the user can't zoom back out. TouchAction action = TouchActionUtil::computeEffectiveTouchAction(*element); if (!(action & TouchActionPinchZoom)) zoomInToLegibleScale = false; } float scale; IntPoint scroll; bool needAnimation; computeScaleAndScrollForFocusedNode(element, zoomInToLegibleScale, scale, scroll, needAnimation); if (needAnimation) startPageScaleAnimation(scroll, false, scale, scrollAndScaleAnimationDurationInSeconds); return true; } void WebViewImpl::smoothScroll(int targetX, int targetY, long durationMs) { IntPoint targetPosition(targetX, targetY); startPageScaleAnimation(targetPosition, false, pageScaleFactor(), (double)durationMs / 1000); } void WebViewImpl::computeScaleAndScrollForFocusedNode(Node* focusedNode, bool zoomInToLegibleScale, float& newScale, IntPoint& newScroll, bool& needAnimation) { VisualViewport& visualViewport = page()->frameHost().visualViewport(); WebRect caretInViewport, unusedEnd; selectionBounds(caretInViewport, unusedEnd); // 'caretInDocument' is rect encompassing the blinking cursor relative to the // root document. IntRect caretInDocument = mainFrameImpl()->frameView()->frameToContents( visualViewport.viewportToRootFrame(caretInViewport)); IntRect textboxRectInDocument = mainFrameImpl()->frameView()->frameToContents( focusedNode->document().view()->contentsToRootFrame( pixelSnappedIntRect(focusedNode->Node::boundingBox()))); if (!zoomInToLegibleScale) { newScale = pageScaleFactor(); } else { // Pick a scale which is reasonably readable. This is the scale at which // the caret height will become minReadableCaretHeightForNode (adjusted // for dpi and font scale factor). const int minReadableCaretHeightForNode = textboxRectInDocument.height() >= 2 * caretInDocument.height() ? minReadableCaretHeightForTextArea : minReadableCaretHeight; newScale = clampPageScaleFactorToLimits(maximumLegiblePageScale() * minReadableCaretHeightForNode / caretInDocument.height()); newScale = std::max(newScale, pageScaleFactor()); } const float deltaScale = newScale / pageScaleFactor(); needAnimation = false; // If we are at less than the target zoom level, zoom in. if (deltaScale > minScaleChangeToTriggerZoom) needAnimation = true; else newScale = pageScaleFactor(); // If the caret is offscreen, then animate. if (!visualViewport.visibleRectInDocument().contains(caretInDocument)) needAnimation = true; // If the box is partially offscreen and it's possible to bring it fully // onscreen, then animate. if (visualViewport.visibleRect().width() >= textboxRectInDocument.width() && visualViewport.visibleRect().height() >= textboxRectInDocument.height() && !visualViewport.visibleRectInDocument().contains(textboxRectInDocument)) needAnimation = true; if (!needAnimation) return; FloatSize targetViewportSize(visualViewport.size()); targetViewportSize.scale(1 / newScale); if (textboxRectInDocument.width() <= targetViewportSize.width()) { // Field is narrower than screen. Try to leave padding on left so field's // label is visible, but it's more important to ensure entire field is // onscreen. int idealLeftPadding = targetViewportSize.width() * leftBoxRatio; int maxLeftPaddingKeepingBoxOnscreen = targetViewportSize.width() - textboxRectInDocument.width(); newScroll.setX( textboxRectInDocument.x() - std::min(idealLeftPadding, maxLeftPaddingKeepingBoxOnscreen)); } else { // Field is wider than screen. Try to left-align field, unless caret would // be offscreen, in which case right-align the caret. newScroll.setX(std::max(textboxRectInDocument.x(), caretInDocument.x() + caretInDocument.width() + caretPadding - targetViewportSize.width())); } if (textboxRectInDocument.height() <= targetViewportSize.height()) { // Field is shorter than screen. Vertically center it. newScroll.setY( textboxRectInDocument.y() - (targetViewportSize.height() - textboxRectInDocument.height()) / 2); } else { // Field is taller than screen. Try to top align field, unless caret would // be offscreen, in which case bottom-align the caret. newScroll.setY(std::max(textboxRectInDocument.y(), caretInDocument.y() + caretInDocument.height() + caretPadding - targetViewportSize.height())); } } void WebViewImpl::advanceFocus(bool reverse) { page()->focusController().advanceFocus(reverse ? WebFocusTypeBackward : WebFocusTypeForward); } void WebViewImpl::advanceFocusAcrossFrames(WebFocusType type, WebRemoteFrame* from, WebLocalFrame* to) { // TODO(alexmos): Pass in proper with sourceCapabilities. page()->focusController().advanceFocusAcrossFrames( type, toWebRemoteFrameImpl(from)->frame(), toWebLocalFrameImpl(to)->frame()); } double WebViewImpl::zoomLevel() { return m_zoomLevel; } void WebViewImpl::propagateZoomFactorToLocalFrameRoots(Frame* frame, float zoomFactor) { if (frame->isLocalRoot()) { LocalFrame* localFrame = toLocalFrame(frame); if (!WebLocalFrameImpl::pluginContainerFromFrame(localFrame)) localFrame->setPageZoomFactor(zoomFactor); } for (Frame* child = frame->tree().firstChild(); child; child = child->tree().nextSibling()) propagateZoomFactorToLocalFrameRoots(child, zoomFactor); } double WebViewImpl::setZoomLevel(double zoomLevel) { if (zoomLevel < m_minimumZoomLevel) m_zoomLevel = m_minimumZoomLevel; else if (zoomLevel > m_maximumZoomLevel) m_zoomLevel = m_maximumZoomLevel; else m_zoomLevel = zoomLevel; float zoomFactor = m_zoomFactorOverride ? m_zoomFactorOverride : static_cast(zoomLevelToZoomFactor(m_zoomLevel)); if (m_zoomFactorForDeviceScaleFactor) { if (m_compositorDeviceScaleFactorOverride) { // Adjust the page's DSF so that DevicePixelRatio becomes // m_zoomFactorForDeviceScaleFactor. page()->setDeviceScaleFactor(m_zoomFactorForDeviceScaleFactor / m_compositorDeviceScaleFactorOverride); zoomFactor *= m_compositorDeviceScaleFactorOverride; } else { page()->setDeviceScaleFactor(1.f); zoomFactor *= m_zoomFactorForDeviceScaleFactor; } } propagateZoomFactorToLocalFrameRoots(m_page->mainFrame(), zoomFactor); return m_zoomLevel; } void WebViewImpl::zoomLimitsChanged(double minimumZoomLevel, double maximumZoomLevel) { m_minimumZoomLevel = minimumZoomLevel; m_maximumZoomLevel = maximumZoomLevel; m_client->zoomLimitsChanged(m_minimumZoomLevel, m_maximumZoomLevel); } float WebViewImpl::textZoomFactor() { return mainFrameImpl()->frame()->textZoomFactor(); } float WebViewImpl::setTextZoomFactor(float textZoomFactor) { LocalFrame* frame = mainFrameImpl()->frame(); if (WebLocalFrameImpl::pluginContainerFromFrame(frame)) return 1; frame->setTextZoomFactor(textZoomFactor); return textZoomFactor; } double WebView::zoomLevelToZoomFactor(double zoomLevel) { return pow(textSizeMultiplierRatio, zoomLevel); } double WebView::zoomFactorToZoomLevel(double factor) { // Since factor = 1.2^level, level = log(factor) / log(1.2) return log(factor) / log(textSizeMultiplierRatio); } float WebViewImpl::pageScaleFactor() const { if (!page()) return 1; return page()->frameHost().visualViewport().scale(); } float WebViewImpl::clampPageScaleFactorToLimits(float scaleFactor) const { return pageScaleConstraintsSet().finalConstraints().clampToConstraints( scaleFactor); } void WebViewImpl::setVisualViewportOffset(const WebFloatPoint& offset) { DCHECK(page()); page()->frameHost().visualViewport().setLocation(offset); } WebFloatPoint WebViewImpl::visualViewportOffset() const { DCHECK(page()); return page()->frameHost().visualViewport().visibleRect().location(); } WebFloatSize WebViewImpl::visualViewportSize() const { DCHECK(page()); return page()->frameHost().visualViewport().visibleRect().size(); } void WebViewImpl::scrollAndRescaleViewports( float scaleFactor, const IntPoint& mainFrameOrigin, const FloatPoint& visualViewportOrigin) { if (!page()) return; if (!mainFrameImpl()) return; FrameView* view = mainFrameImpl()->frameView(); if (!view) return; // Order is important: visual viewport location is clamped based on // main frame scroll position and visual viewport scale. view->setScrollOffset(toScrollOffset(mainFrameOrigin), ProgrammaticScroll); setPageScaleFactor(scaleFactor); page()->frameHost().visualViewport().setLocation(visualViewportOrigin); } void WebViewImpl::setPageScaleFactorAndLocation(float scaleFactor, const FloatPoint& location) { DCHECK(page()); page()->frameHost().visualViewport().setScaleAndLocation( clampPageScaleFactorToLimits(scaleFactor), location); } void WebViewImpl::setPageScaleFactor(float scaleFactor) { DCHECK(page()); scaleFactor = clampPageScaleFactorToLimits(scaleFactor); if (scaleFactor == pageScaleFactor()) return; page()->frameHost().visualViewport().setScale(scaleFactor); } void WebViewImpl::setDeviceScaleFactor(float scaleFactor) { if (!page()) return; page()->setDeviceScaleFactor(scaleFactor); if (m_layerTreeView) updateLayerTreeDeviceScaleFactor(); } void WebViewImpl::setZoomFactorForDeviceScaleFactor( float zoomFactorForDeviceScaleFactor) { m_zoomFactorForDeviceScaleFactor = zoomFactorForDeviceScaleFactor; if (!m_layerTreeView) return; setZoomLevel(m_zoomLevel); } void WebViewImpl::setDeviceColorProfile(const WebVector& colorProfile) { Vector deviceProfile; deviceProfile.append(colorProfile.data(), colorProfile.size()); ImageDecoder::setTargetColorProfile(deviceProfile); } void WebViewImpl::enableAutoResizeMode(const WebSize& minSize, const WebSize& maxSize) { m_shouldAutoResize = true; m_minAutoSize = minSize; m_maxAutoSize = maxSize; configureAutoResizeMode(); } void WebViewImpl::disableAutoResizeMode() { m_shouldAutoResize = false; configureAutoResizeMode(); } void WebViewImpl::setDefaultPageScaleLimits(float minScale, float maxScale) { return page()->frameHost().setDefaultPageScaleLimits(minScale, maxScale); } void WebViewImpl::setInitialPageScaleOverride( float initialPageScaleFactorOverride) { PageScaleConstraints constraints = pageScaleConstraintsSet().userAgentConstraints(); constraints.initialScale = initialPageScaleFactorOverride; if (constraints == pageScaleConstraintsSet().userAgentConstraints()) return; pageScaleConstraintsSet().setNeedsReset(true); page()->frameHost().setUserAgentPageScaleConstraints(constraints); } void WebViewImpl::setMaximumLegibleScale(float maximumLegibleScale) { m_maximumLegibleScale = maximumLegibleScale; } void WebViewImpl::setIgnoreViewportTagScaleLimits(bool ignore) { PageScaleConstraints constraints = pageScaleConstraintsSet().userAgentConstraints(); if (ignore) { constraints.minimumScale = pageScaleConstraintsSet().defaultConstraints().minimumScale; constraints.maximumScale = pageScaleConstraintsSet().defaultConstraints().maximumScale; } else { constraints.minimumScale = -1; constraints.maximumScale = -1; } page()->frameHost().setUserAgentPageScaleConstraints(constraints); } IntSize WebViewImpl::mainFrameSize() { // The frame size should match the viewport size at minimum scale, since the // viewport must always be contained by the frame. FloatSize frameSize(m_size); frameSize.scale(1 / minimumPageScaleFactor()); return expandedIntSize(frameSize); } PageScaleConstraintsSet& WebViewImpl::pageScaleConstraintsSet() const { return page()->frameHost().pageScaleConstraintsSet(); } void WebViewImpl::refreshPageScaleFactorAfterLayout() { if (!mainFrame() || !page() || !page()->mainFrame() || !page()->mainFrame()->isLocalFrame() || !page()->deprecatedLocalMainFrame()->view()) return; FrameView* view = page()->deprecatedLocalMainFrame()->view(); updatePageDefinedViewportConstraints( mainFrameImpl()->frame()->document()->viewportDescription()); pageScaleConstraintsSet().computeFinalConstraints(); int verticalScrollbarWidth = 0; if (view->verticalScrollbar() && !view->verticalScrollbar()->isOverlayScrollbar()) verticalScrollbarWidth = view->verticalScrollbar()->width(); pageScaleConstraintsSet().adjustFinalConstraintsToContentsSize( contentsSize(), verticalScrollbarWidth, settings()->shrinksViewportContentToFit()); float newPageScaleFactor = pageScaleFactor(); if (pageScaleConstraintsSet().needsReset() && pageScaleConstraintsSet().finalConstraints().initialScale != -1) { newPageScaleFactor = pageScaleConstraintsSet().finalConstraints().initialScale; pageScaleConstraintsSet().setNeedsReset(false); } setPageScaleFactor(newPageScaleFactor); updateLayerTreeViewport(); // Changes to page-scale during layout may require an additional frame. // We can't update the lifecycle here because we may be in the middle of // layout in the caller of this method. // TODO(chrishtr): clean all this up. All layout should happen in one // lifecycle run (crbug.com/578239). if (mainFrameImpl()->frameView()->needsLayout()) mainFrameImpl()->frameWidget()->scheduleAnimation(); } void WebViewImpl::updatePageDefinedViewportConstraints( const ViewportDescription& description) { if (!page() || (!m_size.width && !m_size.height) || !page()->mainFrame()->isLocalFrame()) return; if (!settings()->viewportEnabled()) { pageScaleConstraintsSet().clearPageDefinedConstraints(); updateMainFrameLayoutSize(); // If we don't support mobile viewports, allow GPU rasterization. m_matchesHeuristicsForGpuRasterization = true; if (m_layerTreeView) m_layerTreeView->heuristicsForGpuRasterizationUpdated( m_matchesHeuristicsForGpuRasterization); return; } Document* document = page()->deprecatedLocalMainFrame()->document(); m_matchesHeuristicsForGpuRasterization = description.matchesHeuristicsForGpuRasterization(); if (m_layerTreeView) m_layerTreeView->heuristicsForGpuRasterizationUpdated( m_matchesHeuristicsForGpuRasterization); Length defaultMinWidth = document->viewportDefaultMinWidth(); if (defaultMinWidth.isAuto()) defaultMinWidth = Length(ExtendToZoom); ViewportDescription adjustedDescription = description; if (settingsImpl()->viewportMetaLayoutSizeQuirk() && adjustedDescription.type == ViewportDescription::ViewportMeta) { const int legacyWidthSnappingMagicNumber = 320; if (adjustedDescription.maxWidth.isFixed() && adjustedDescription.maxWidth.value() <= legacyWidthSnappingMagicNumber) adjustedDescription.maxWidth = Length(DeviceWidth); if (adjustedDescription.maxHeight.isFixed() && adjustedDescription.maxHeight.value() <= m_size.height) adjustedDescription.maxHeight = Length(DeviceHeight); adjustedDescription.minWidth = adjustedDescription.maxWidth; adjustedDescription.minHeight = adjustedDescription.maxHeight; } float oldInitialScale = pageScaleConstraintsSet().pageDefinedConstraints().initialScale; pageScaleConstraintsSet().updatePageDefinedConstraints(adjustedDescription, defaultMinWidth); if (settingsImpl()->clobberUserAgentInitialScaleQuirk() && pageScaleConstraintsSet().userAgentConstraints().initialScale != -1 && pageScaleConstraintsSet().userAgentConstraints().initialScale * deviceScaleFactor() <= 1) { if (description.maxWidth == Length(DeviceWidth) || (description.maxWidth.type() == Auto && pageScaleConstraintsSet().pageDefinedConstraints().initialScale == 1.0f)) setInitialPageScaleOverride(-1); } Settings& pageSettings = page()->settings(); pageScaleConstraintsSet().adjustForAndroidWebViewQuirks( adjustedDescription, defaultMinWidth.intValue(), deviceScaleFactor(), settingsImpl()->supportDeprecatedTargetDensityDPI(), pageSettings.wideViewportQuirkEnabled(), pageSettings.useWideViewport(), pageSettings.loadWithOverviewMode(), settingsImpl()->viewportMetaNonUserScalableQuirk()); float newInitialScale = pageScaleConstraintsSet().pageDefinedConstraints().initialScale; if (oldInitialScale != newInitialScale && newInitialScale != -1) { pageScaleConstraintsSet().setNeedsReset(true); if (mainFrameImpl() && mainFrameImpl()->frameView()) mainFrameImpl()->frameView()->setNeedsLayout(); } if (LocalFrame* frame = page()->deprecatedLocalMainFrame()) { if (TextAutosizer* textAutosizer = frame->document()->textAutosizer()) textAutosizer->updatePageInfoInAllFrames(); } updateMainFrameLayoutSize(); } void WebViewImpl::updateMainFrameLayoutSize() { if (m_shouldAutoResize || !mainFrameImpl()) return; FrameView* view = mainFrameImpl()->frameView(); if (!view) return; WebSize layoutSize = m_size; if (settings()->viewportEnabled()) layoutSize = pageScaleConstraintsSet().layoutSize(); if (page()->settings().forceZeroLayoutHeight()) layoutSize.height = 0; view->setLayoutSize(layoutSize); } IntSize WebViewImpl::contentsSize() const { if (!page()->mainFrame()->isLocalFrame()) return IntSize(); LayoutViewItem root = page()->deprecatedLocalMainFrame()->contentLayoutItem(); if (root.isNull()) return IntSize(); return root.documentRect().size(); } WebSize WebViewImpl::contentsPreferredMinimumSize() { if (mainFrameImpl()) mainFrameImpl() ->frame() ->view() ->updateLifecycleToCompositingCleanPlusScrolling(); Document* document = m_page->mainFrame()->isLocalFrame() ? m_page->deprecatedLocalMainFrame()->document() : nullptr; if (!document || document->layoutViewItem().isNull() || !document->documentElement() || !document->documentElement()->layoutBox()) return WebSize(); int widthScaled = document->layoutViewItem() .minPreferredLogicalWidth() .round(); // Already accounts for zoom. int heightScaled = document->documentElement()->layoutBox()->scrollHeight().round(); return IntSize(widthScaled, heightScaled); } float WebViewImpl::defaultMinimumPageScaleFactor() const { return pageScaleConstraintsSet().defaultConstraints().minimumScale; } float WebViewImpl::defaultMaximumPageScaleFactor() const { return pageScaleConstraintsSet().defaultConstraints().maximumScale; } float WebViewImpl::minimumPageScaleFactor() const { return pageScaleConstraintsSet().finalConstraints().minimumScale; } float WebViewImpl::maximumPageScaleFactor() const { return pageScaleConstraintsSet().finalConstraints().maximumScale; } void WebViewImpl::resetScaleStateImmediately() { pageScaleConstraintsSet().setNeedsReset(true); } void WebViewImpl::resetScrollAndScaleState() { page()->frameHost().visualViewport().reset(); if (!page()->mainFrame()->isLocalFrame()) return; if (FrameView* frameView = toLocalFrame(page()->mainFrame())->view()) { ScrollableArea* scrollableArea = frameView->layoutViewportScrollableArea(); if (!scrollableArea->scrollOffset().isZero()) scrollableArea->setScrollOffset(ScrollOffset(), ProgrammaticScroll); } pageScaleConstraintsSet().setNeedsReset(true); } void WebViewImpl::performMediaPlayerAction(const WebMediaPlayerAction& action, const WebPoint& location) { HitTestResult result = hitTestResultForViewportPos(location); Node* node = result.innerNode(); if (!isHTMLVideoElement(*node) && !isHTMLAudioElement(*node)) return; HTMLMediaElement* mediaElement = toHTMLMediaElement(node); switch (action.type) { case WebMediaPlayerAction::Play: if (action.enable) mediaElement->play(); else mediaElement->pause(); break; case WebMediaPlayerAction::Mute: mediaElement->setMuted(action.enable); break; case WebMediaPlayerAction::Loop: mediaElement->setLoop(action.enable); break; case WebMediaPlayerAction::Controls: mediaElement->setBooleanAttribute(HTMLNames::controlsAttr, action.enable); break; default: NOTREACHED(); } } void WebViewImpl::performPluginAction(const WebPluginAction& action, const WebPoint& location) { // FIXME: Location is probably in viewport coordinates HitTestResult result = hitTestResultForRootFramePos(location); Node* node = result.innerNode(); if (!isHTMLObjectElement(*node) && !isHTMLEmbedElement(*node)) return; LayoutObject* object = node->layoutObject(); if (object && object->isLayoutPart()) { Widget* widget = toLayoutPart(object)->widget(); if (widget && widget->isPluginContainer()) { WebPluginContainerImpl* plugin = toWebPluginContainerImpl(widget); switch (action.type) { case WebPluginAction::Rotate90Clockwise: plugin->plugin()->rotateView(WebPlugin::RotationType90Clockwise); break; case WebPluginAction::Rotate90Counterclockwise: plugin->plugin()->rotateView( WebPlugin::RotationType90Counterclockwise); break; default: NOTREACHED(); } } } } void WebViewImpl::audioStateChanged(bool isAudioPlaying) { m_scheduler->audioStateChanged(isAudioPlaying); } WebHitTestResult WebViewImpl::hitTestResultAt(const WebPoint& point) { return coreHitTestResultAt(point); } HitTestResult WebViewImpl::coreHitTestResultAt( const WebPoint& pointInViewport) { DocumentLifecycle::AllowThrottlingScope throttlingScope( mainFrameImpl()->frame()->document()->lifecycle()); FrameView* view = mainFrameImpl()->frameView(); IntPoint pointInRootFrame = view->contentsToFrame(view->viewportToContents(pointInViewport)); return hitTestResultForRootFramePos(pointInRootFrame); } void WebViewImpl::spellingMarkers(WebVector* markers) { Vector result; for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) { if (!frame->isLocalFrame()) continue; const DocumentMarkerVector& documentMarkers = toLocalFrame(frame)->document()->markers().markers(); for (size_t i = 0; i < documentMarkers.size(); ++i) result.append(documentMarkers[i]->hash()); } markers->assign(result); } void WebViewImpl::removeSpellingMarkersUnderWords( const WebVector& words) { Vector convertedWords; convertedWords.append(words.data(), words.size()); for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) { if (frame->isLocalFrame()) toLocalFrame(frame)->removeSpellingMarkersUnderWords(convertedWords); } } void WebViewImpl::sendResizeEventAndRepaint() { // FIXME: This is wrong. The FrameView is responsible sending a resizeEvent // as part of layout. Layout is also responsible for sending invalidations // to the embedder. This method and all callers may be wrong. -- eseidel. if (mainFrameImpl()->frameView()) { // Enqueues the resize event. mainFrameImpl()->frame()->document()->enqueueResizeEvent(); } if (m_client) { if (m_layerTreeView) { updateLayerTreeViewport(); } else { WebRect damagedRect(0, 0, m_size.width, m_size.height); m_client->widgetClient()->didInvalidateRect(damagedRect); } } } void WebViewImpl::configureAutoResizeMode() { if (!mainFrameImpl() || !mainFrameImpl()->frame() || !mainFrameImpl()->frame()->view()) return; if (m_shouldAutoResize) mainFrameImpl()->frame()->view()->enableAutoSizeMode(m_minAutoSize, m_maxAutoSize); else mainFrameImpl()->frame()->view()->disableAutoSizeMode(); } unsigned long WebViewImpl::createUniqueIdentifierForRequest() { return createUniqueIdentifier(); } void WebViewImpl::setCompositorDeviceScaleFactorOverride( float deviceScaleFactor) { if (m_compositorDeviceScaleFactorOverride == deviceScaleFactor) return; m_compositorDeviceScaleFactorOverride = deviceScaleFactor; if (m_zoomFactorForDeviceScaleFactor) { setZoomLevel(zoomLevel()); return; } if (page() && m_layerTreeView) updateLayerTreeDeviceScaleFactor(); } void WebViewImpl::setDeviceEmulationTransform( const TransformationMatrix& transform) { if (transform == m_deviceEmulationTransform) return; m_deviceEmulationTransform = transform; updateDeviceEmulationTransform(); } TransformationMatrix WebViewImpl::getDeviceEmulationTransformForTesting() const { return m_deviceEmulationTransform; } void WebViewImpl::enableDeviceEmulation( const WebDeviceEmulationParams& params) { m_devToolsEmulator->enableDeviceEmulation(params); } void WebViewImpl::disableDeviceEmulation() { m_devToolsEmulator->disableDeviceEmulation(); } WebAXObject WebViewImpl::accessibilityObject() { if (!mainFrameImpl()) return WebAXObject(); Document* document = mainFrameImpl()->frame()->document(); return WebAXObject(toAXObjectCacheImpl(document->axObjectCache())->root()); } void WebViewImpl::performCustomContextMenuAction(unsigned action) { if (!m_page) return; ContextMenu* menu = m_page->contextMenuController().contextMenu(); if (!menu) return; const ContextMenuItem* item = menu->itemWithAction( static_cast(ContextMenuItemBaseCustomTag + action)); if (item) m_page->contextMenuController().contextMenuItemSelected(item); m_page->contextMenuController().clearContextMenu(); } void WebViewImpl::showContextMenu() { if (!page()) return; page()->contextMenuController().clearContextMenu(); { ContextMenuAllowedScope scope; if (LocalFrame* focusedFrame = toLocalFrame(page()->focusController().focusedOrMainFrame())) focusedFrame->eventHandler().sendContextMenuEventForKey(nullptr); } } void WebViewImpl::didCloseContextMenu() { LocalFrame* frame = m_page->focusController().focusedFrame(); if (frame) frame->selection().setCaretBlinkingSuspended(false); } void WebViewImpl::extractSmartClipData(WebRect rectInViewport, WebString& clipText, WebString& clipHtml, WebRect& clipRectInViewport) { LocalFrame* localFrame = toLocalFrame(focusedCoreFrame()); if (!localFrame) return; SmartClipData clipData = SmartClip(localFrame).dataForRect(rectInViewport); clipText = clipData.clipData(); clipRectInViewport = clipData.rectInViewport(); WebLocalFrameImpl* frame = mainFrameImpl(); if (!frame) return; WebPoint startPoint(rectInViewport.x, rectInViewport.y); WebPoint endPoint(rectInViewport.x + rectInViewport.width, rectInViewport.y + rectInViewport.height); VisiblePosition startVisiblePosition = frame->visiblePositionForViewportPoint(startPoint); VisiblePosition endVisiblePosition = frame->visiblePositionForViewportPoint(endPoint); Position startPosition = startVisiblePosition.deepEquivalent(); Position endPosition = endVisiblePosition.deepEquivalent(); // document() will return null if -webkit-user-select is set to none. if (!startPosition.document() || !endPosition.document()) return; if (startPosition.compareTo(endPosition) <= 0) { clipHtml = createMarkup(startPosition, endPosition, AnnotateForInterchange, ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs); } else { clipHtml = createMarkup(endPosition, startPosition, AnnotateForInterchange, ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs); } } void WebViewImpl::hidePopups() { cancelPagePopup(); } void WebViewImpl::setIsTransparent(bool isTransparent) { // Set any existing frames to be transparent. Frame* frame = m_page->mainFrame(); while (frame) { if (frame->isLocalFrame()) toLocalFrame(frame)->view()->setTransparent(isTransparent); frame = frame->tree().traverseNext(); } // Future frames check this to know whether to be transparent. m_isTransparent = isTransparent; if (m_layerTreeView) m_layerTreeView->setHasTransparentBackground(this->isTransparent()); } bool WebViewImpl::isTransparent() const { return m_isTransparent; } WebInputMethodControllerImpl* WebViewImpl::getActiveWebInputMethodController() const { return WebInputMethodControllerImpl::fromFrame( focusedLocalFrameAvailableForIme()); } void WebViewImpl::setBaseBackgroundColor(WebColor color) { if (m_baseBackgroundColor == color) return; m_baseBackgroundColor = color; if (m_page->mainFrame() && m_page->mainFrame()->isLocalFrame()) m_page->deprecatedLocalMainFrame()->view()->setBaseBackgroundColor(color); } void WebViewImpl::setIsActive(bool active) { if (page()) page()->focusController().setActive(active); } bool WebViewImpl::isActive() const { return page() ? page()->focusController().isActive() : false; } void WebViewImpl::setDomainRelaxationForbidden(bool forbidden, const WebString& scheme) { SchemeRegistry::setDomainRelaxationForbiddenForURLScheme(forbidden, String(scheme)); } void WebViewImpl::setWindowFeatures(const WebWindowFeatures& features) { m_page->chromeClient().setWindowFeatures(features); } void WebViewImpl::setOpenedByDOM() { m_page->setOpenedByDOM(); } void WebViewImpl::setSelectionColors(unsigned activeBackgroundColor, unsigned activeForegroundColor, unsigned inactiveBackgroundColor, unsigned inactiveForegroundColor) { #if USE(DEFAULT_RENDER_THEME) LayoutThemeDefault::setSelectionColors( activeBackgroundColor, activeForegroundColor, inactiveBackgroundColor, inactiveForegroundColor); LayoutTheme::theme().platformColorsDidChange(); #endif } void WebViewImpl::didCommitLoad(bool isNewNavigation, bool isNavigationWithinPage) { if (!isNavigationWithinPage) { m_shouldDispatchFirstVisuallyNonEmptyLayout = true; m_shouldDispatchFirstLayoutAfterFinishedParsing = true; m_shouldDispatchFirstLayoutAfterFinishedLoading = true; if (isNewNavigation) { pageScaleConstraintsSet().setNeedsReset(true); m_pageImportanceSignals.onCommitLoad(); } } // Give the visual viewport's scroll layer its initial size. page()->frameHost().visualViewport().mainFrameDidChangeSize(); // Make sure link highlight from previous page is cleared. m_linkHighlights.clear(); endActiveFlingAnimation(); m_userGestureObserved = false; } void WebViewImpl::postLayoutResize(WebLocalFrameImpl* webframe) { FrameView* view = webframe->frame()->view(); if (webframe == mainFrame()) m_resizeViewportAnchor->resizeFrameView(mainFrameSize()); else view->resize(webframe->frameView()->size()); } void WebViewImpl::layoutUpdated(WebLocalFrameImpl* webframe) { LocalFrame* frame = webframe->frame(); if (!m_client || !frame->isLocalRoot()) return; if (m_shouldAutoResize) { WebSize frameSize = frame->view()->frameRect().size(); if (frameSize != m_size) { m_size = frameSize; page()->frameHost().visualViewport().setSize(m_size); pageScaleConstraintsSet().didChangeInitialContainingBlockSize(m_size); frame->view()->setInitialViewportSize(m_size); m_client->didAutoResize(m_size); sendResizeEventAndRepaint(); } } if (pageScaleConstraintsSet().constraintsDirty()) refreshPageScaleFactorAfterLayout(); FrameView* view = webframe->frame()->view(); postLayoutResize(webframe); // Relayout immediately to avoid violating the rule that needsLayout() // isn't set at the end of a layout. if (view->needsLayout()) view->layout(); updatePageOverlays(); m_fullscreenController->didUpdateLayout(); m_client->didUpdateLayout(); } void WebViewImpl::didChangeContentsSize() { pageScaleConstraintsSet().didChangeContentsSize(contentsSize(), pageScaleFactor()); } void WebViewImpl::pageScaleFactorChanged() { pageScaleConstraintsSet().setNeedsReset(false); updateLayerTreeViewport(); m_client->pageScaleFactorChanged(); m_devToolsEmulator->mainFrameScrollOrScaleChanged(); } void WebViewImpl::mainFrameScrollOffsetChanged() { m_devToolsEmulator->mainFrameScrollOrScaleChanged(); } bool WebViewImpl::useExternalPopupMenus() { return shouldUseExternalPopupMenus; } void WebViewImpl::setIgnoreInputEvents(bool newValue) { DCHECK_NE(m_ignoreInputEvents, newValue); m_ignoreInputEvents = newValue; } void WebViewImpl::setBackgroundColorOverride(WebColor color) { m_backgroundColorOverride = color; updateLayerTreeBackgroundColor(); } void WebViewImpl::setZoomFactorOverride(float zoomFactor) { m_zoomFactorOverride = zoomFactor; setZoomLevel(zoomLevel()); } void WebViewImpl::setPageOverlayColor(WebColor color) { if (m_pageColorOverlay) m_pageColorOverlay.reset(); if (color == Color::transparent) return; m_pageColorOverlay = PageOverlay::create(mainFrameImpl(), makeUnique(color)); m_pageColorOverlay->update(); } WebPageImportanceSignals* WebViewImpl::pageImportanceSignals() { return &m_pageImportanceSignals; } Element* WebViewImpl::focusedElement() const { LocalFrame* frame = m_page->focusController().focusedFrame(); if (!frame) return nullptr; Document* document = frame->document(); if (!document) return nullptr; return document->focusedElement(); } HitTestResult WebViewImpl::hitTestResultForViewportPos( const IntPoint& posInViewport) { IntPoint rootFramePoint( m_page->frameHost().visualViewport().viewportToRootFrame(posInViewport)); return hitTestResultForRootFramePos(rootFramePoint); } HitTestResult WebViewImpl::hitTestResultForRootFramePos( const IntPoint& posInRootFrame) { if (!m_page->mainFrame()->isLocalFrame()) return HitTestResult(); IntPoint docPoint( m_page->deprecatedLocalMainFrame()->view()->rootFrameToContents( posInRootFrame)); HitTestResult result = m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint( docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active); result.setToShadowHostIfInUserAgentShadowRoot(); return result; } WebHitTestResult WebViewImpl::hitTestResultForTap( const WebPoint& tapPointWindowPos, const WebSize& tapArea) { if (!m_page->mainFrame()->isLocalFrame()) return HitTestResult(); WebGestureEvent tapEvent; tapEvent.x = tapPointWindowPos.x; tapEvent.y = tapPointWindowPos.y; tapEvent.type = WebInputEvent::GestureTap; // GestureTap is only ever from a touchscreen. tapEvent.sourceDevice = WebGestureDeviceTouchscreen; tapEvent.data.tap.tapCount = 1; tapEvent.data.tap.width = tapArea.width; tapEvent.data.tap.height = tapArea.height; PlatformGestureEventBuilder platformEvent(mainFrameImpl()->frameView(), tapEvent); HitTestResult result = m_page->deprecatedLocalMainFrame() ->eventHandler() .hitTestResultForGestureEvent( platformEvent, HitTestRequest::ReadOnly | HitTestRequest::Active) .hitTestResult(); result.setToShadowHostIfInUserAgentShadowRoot(); return result; } void WebViewImpl::setTabsToLinks(bool enable) { m_tabsToLinks = enable; } bool WebViewImpl::tabsToLinks() const { return m_tabsToLinks; } void WebViewImpl::registerViewportLayersWithCompositor() { DCHECK(m_layerTreeView); if (!page()->mainFrame() || !page()->mainFrame()->isLocalFrame()) return; Document* document = page()->deprecatedLocalMainFrame()->document(); DCHECK(document); // Get the outer viewport scroll layer. GraphicsLayer* layoutViewportScrollLayer = page()->frameHost().globalRootScrollerController().rootScrollerLayer(); WebLayer* layoutViewportWebLayer = layoutViewportScrollLayer ? layoutViewportScrollLayer->platformLayer() : nullptr; VisualViewport& visualViewport = page()->frameHost().visualViewport(); // TODO(bokan): This was moved here from when registerViewportLayers was a // part of VisualViewport and maybe doesn't belong here. See comment inside // the mehtod. visualViewport.setScrollLayerOnScrollbars(layoutViewportWebLayer); m_layerTreeView->registerViewportLayers( visualViewport.overscrollElasticityLayer()->platformLayer(), visualViewport.pageScaleLayer()->platformLayer(), visualViewport.scrollLayer()->platformLayer(), layoutViewportWebLayer); } void WebViewImpl::setRootGraphicsLayer(GraphicsLayer* graphicsLayer) { if (!m_layerTreeView) return; // In SPv2, setRootLayer is used instead. DCHECK(!RuntimeEnabledFeatures::slimmingPaintV2Enabled()); VisualViewport& visualViewport = page()->frameHost().visualViewport(); visualViewport.attachToLayerTree(graphicsLayer); if (graphicsLayer) { m_rootGraphicsLayer = visualViewport.rootGraphicsLayer(); m_visualViewportContainerLayer = visualViewport.containerLayer(); m_rootLayer = m_rootGraphicsLayer->platformLayer(); updateDeviceEmulationTransform(); m_layerTreeView->setRootLayer(*m_rootLayer); // We register viewport layers here since there may not be a layer // tree view prior to this point. registerViewportLayersWithCompositor(); // TODO(enne): Work around page visibility changes not being // propagated to the WebView in some circumstances. This needs to // be refreshed here when setting a new root layer to avoid being // stuck in a presumed incorrectly invisible state. m_layerTreeView->setVisible(page()->isPageVisible()); } else { m_rootGraphicsLayer = nullptr; m_visualViewportContainerLayer = nullptr; m_rootLayer = nullptr; // This means that we're transitioning to a new page. Suppress // commits until Blink generates invalidations so we don't // attempt to paint too early in the next page load. m_layerTreeView->setDeferCommits(true); m_layerTreeView->clearRootLayer(); m_layerTreeView->clearViewportLayers(); if (WebDevToolsAgentImpl* devTools = mainFrameDevToolsAgentImpl()) devTools->rootLayerCleared(); } } void WebViewImpl::setRootLayer(WebLayer* layer) { if (!m_layerTreeView) return; if (layer) { m_rootLayer = layer; m_layerTreeView->setRootLayer(*m_rootLayer); m_layerTreeView->setVisible(page()->isPageVisible()); } else { m_rootLayer = nullptr; // This means that we're transitioning to a new page. Suppress // commits until Blink generates invalidations so we don't // attempt to paint too early in the next page load. m_layerTreeView->setDeferCommits(true); m_layerTreeView->clearRootLayer(); m_layerTreeView->clearViewportLayers(); if (WebDevToolsAgentImpl* devTools = mainFrameDevToolsAgentImpl()) devTools->rootLayerCleared(); } } void WebViewImpl::invalidateRect(const IntRect& rect) { if (m_layerTreeView) { updateLayerTreeViewport(); } else if (m_client) { // This is only for WebViewPlugin. m_client->widgetClient()->didInvalidateRect(rect); } } PaintLayerCompositor* WebViewImpl::compositor() const { WebLocalFrameImpl* frame = mainFrameImpl(); if (!frame) return nullptr; Document* document = frame->frame()->document(); if (!document || document->layoutViewItem().isNull()) return nullptr; return document->layoutViewItem().compositor(); } GraphicsLayer* WebViewImpl::rootGraphicsLayer() { return m_rootGraphicsLayer; } void WebViewImpl::scheduleAnimationForWidget() { if (m_layerTreeView) { m_layerTreeView->setNeedsBeginFrame(); return; } if (m_client) m_client->widgetClient()->scheduleAnimation(); } void WebViewImpl::attachCompositorAnimationTimeline( CompositorAnimationTimeline* timeline) { if (m_layerTreeView) m_layerTreeView->attachCompositorAnimationTimeline( timeline->animationTimeline()); } void WebViewImpl::detachCompositorAnimationTimeline( CompositorAnimationTimeline* timeline) { if (m_layerTreeView) m_layerTreeView->detachCompositorAnimationTimeline( timeline->animationTimeline()); } void WebViewImpl::initializeLayerTreeView() { if (m_client) { m_client->initializeLayerTreeView(); m_layerTreeView = m_client->widgetClient()->layerTreeView(); } if (WebDevToolsAgentImpl* devTools = mainFrameDevToolsAgentImpl()) devTools->layerTreeViewChanged(m_layerTreeView); m_page->settings().setAcceleratedCompositingEnabled(m_layerTreeView); if (m_layerTreeView) m_page->layerTreeViewInitialized(*m_layerTreeView); // FIXME: only unittests, click to play, Android printing, and printing (for // headers and footers) make this assert necessary. We should make them not // hit this code and then delete allowsBrokenNullLayerTreeView. DCHECK(m_layerTreeView || !m_client || m_client->widgetClient()->allowsBrokenNullLayerTreeView()); if (Platform::current()->isThreadedAnimationEnabled() && m_layerTreeView) { m_linkHighlightsTimeline = CompositorAnimationTimeline::create(); attachCompositorAnimationTimeline(m_linkHighlightsTimeline.get()); } } void WebViewImpl::applyViewportDeltas( const WebFloatSize& visualViewportDelta, // TODO(bokan): This parameter is to be removed but requires adjusting many // callsites. const WebFloatSize&, const WebFloatSize& elasticOverscrollDelta, float pageScaleDelta, float browserControlsShownRatioDelta) { VisualViewport& visualViewport = page()->frameHost().visualViewport(); // Store the desired offsets the visual viewport before setting the top // controls ratio since doing so will change the bounds and move the // viewports to keep the offsets valid. The compositor may have already // done that so we don't want to double apply the deltas here. FloatPoint visualViewportOffset = visualViewport.visibleRect().location(); visualViewportOffset.move(visualViewportDelta.width, visualViewportDelta.height); browserControls().setShownRatio(browserControls().shownRatio() + browserControlsShownRatioDelta); setPageScaleFactorAndLocation(pageScaleFactor() * pageScaleDelta, visualViewportOffset); if (pageScaleDelta != 1) { m_doubleTapZoomPending = false; visualViewport.userDidChangeScale(); } m_elasticOverscroll += elasticOverscrollDelta; if (mainFrameImpl() && mainFrameImpl()->frameView()) mainFrameImpl()->frameView()->didUpdateElasticOverscroll(); } void WebViewImpl::updateLayerTreeViewport() { if (!page() || !m_layerTreeView) return; m_layerTreeView->setPageScaleFactorAndLimits( pageScaleFactor(), minimumPageScaleFactor(), maximumPageScaleFactor()); } void WebViewImpl::updateLayerTreeBackgroundColor() { if (!m_layerTreeView) return; m_layerTreeView->setBackgroundColor(alphaChannel(m_backgroundColorOverride) ? m_backgroundColorOverride : backgroundColor()); } void WebViewImpl::updateLayerTreeDeviceScaleFactor() { DCHECK(page()); DCHECK(m_layerTreeView); float deviceScaleFactor = m_compositorDeviceScaleFactorOverride ? m_compositorDeviceScaleFactorOverride : page()->deviceScaleFactor(); m_layerTreeView->setDeviceScaleFactor(deviceScaleFactor); } void WebViewImpl::updateDeviceEmulationTransform() { if (!m_visualViewportContainerLayer) return; // When the device emulation transform is updated, to avoid incorrect // scales and fuzzy raster from the compositor, force all content to // pick ideal raster scales. m_visualViewportContainerLayer->setTransform(m_deviceEmulationTransform); m_layerTreeView->forceRecalculateRasterScales(); } bool WebViewImpl::detectContentOnTouch( const GestureEventWithHitTestResults& targetedEvent) { if (!m_page->mainFrame()->isLocalFrame()) return false; // Need a local copy of the hit test as // setToShadowHostIfInUserAgentShadowRoot() will modify it. HitTestResult touchHit = targetedEvent.hitTestResult(); touchHit.setToShadowHostIfInUserAgentShadowRoot(); if (touchHit.isContentEditable()) return false; Node* node = touchHit.innerNode(); if (!node || !node->isTextNode()) return false; // Ignore when tapping on links or nodes listening to click events, unless // the click event is on the body element, in which case it's unlikely that // the original node itself was intended to be clickable. for (; node && !isHTMLBodyElement(*node); node = LayoutTreeBuilderTraversal::parent(*node)) { if (node->isLink() || node->willRespondToTouchEvents() || node->willRespondToMouseClickEvents()) return false; } WebURL intent = m_client->detectContentIntentAt(touchHit); if (!intent.isValid()) return false; // This code is called directly after hit test code, with no user code // running in between, thus it is assumed that the frame pointer is non-null. bool isMainFrame = node ? node->document().frame()->isMainFrame() : true; m_client->scheduleContentIntent(intent, isMainFrame); return true; } WebViewScheduler* WebViewImpl::scheduler() const { return m_scheduler.get(); } void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState, bool isInitialState) { DCHECK(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden || visibilityState == WebPageVisibilityStatePrerender); if (page()) m_page->setVisibilityState( static_cast(static_cast(visibilityState)), isInitialState); bool visible = visibilityState == WebPageVisibilityStateVisible; if (m_layerTreeView && !m_overrideCompositorVisibility) m_layerTreeView->setVisible(visible); m_scheduler->setPageVisible(visible); } void WebViewImpl::setCompositorVisibility(bool isVisible) { if (!isVisible) m_overrideCompositorVisibility = true; else m_overrideCompositorVisibility = false; if (m_layerTreeView) m_layerTreeView->setVisible(isVisible); } void WebViewImpl::pointerLockMouseEvent(const WebInputEvent& event) { std::unique_ptr gestureIndicator; AtomicString eventType; switch (event.type) { case WebInputEvent::MouseDown: eventType = EventTypeNames::mousedown; if (!page() || !page()->pointerLockController().element()) break; gestureIndicator = wrapUnique(new UserGestureIndicator(DocumentUserGestureToken::create( &page()->pointerLockController().element()->document(), UserGestureToken::NewGesture))); m_pointerLockGestureToken = gestureIndicator->currentToken(); break; case WebInputEvent::MouseUp: eventType = EventTypeNames::mouseup; gestureIndicator = wrapUnique( new UserGestureIndicator(m_pointerLockGestureToken.release())); break; case WebInputEvent::MouseMove: eventType = EventTypeNames::mousemove; break; default: NOTREACHED(); } const WebMouseEvent& mouseEvent = static_cast(event); if (page()) page()->pointerLockController().dispatchLockedMouseEvent( PlatformMouseEventBuilder(mainFrameImpl()->frameView(), mouseEvent), eventType); } void WebViewImpl::forceNextWebGLContextCreationToFail() { WebGLRenderingContext::forceNextWebGLContextCreationToFail(); } void WebViewImpl::forceNextDrawingBufferCreationToFail() { DrawingBuffer::forceNextDrawingBufferCreationToFail(); } CompositorProxyClient* WebViewImpl::createCompositorProxyClient() { if (!m_mutator) { std::unique_ptr mutatorClient = CompositorMutatorImpl::createClient(); m_mutator = static_cast(mutatorClient->mutator()); m_layerTreeView->setMutatorClient(std::move(mutatorClient)); } return new CompositorProxyClientImpl(m_mutator); } void WebViewImpl::updatePageOverlays() { if (m_pageColorOverlay) m_pageColorOverlay->update(); if (InspectorOverlay* overlay = inspectorOverlay()) { PageOverlay* inspectorPageOverlay = overlay->pageOverlay(); if (inspectorPageOverlay) inspectorPageOverlay->update(); } } float WebViewImpl::deviceScaleFactor() const { // TODO(oshima): Investigate if this should return the ScreenInfo's scale // factor rather than page's scale factor, which can be 1 in use-zoom-for-dsf // mode. if (!page()) return 1; return page()->deviceScaleFactor(); } LocalFrame* WebViewImpl::focusedLocalFrameInWidget() const { if (!mainFrameImpl()) return nullptr; LocalFrame* focusedFrame = toLocalFrame(focusedCoreFrame()); if (focusedFrame->localFrameRoot() != mainFrameImpl()->frame()) return nullptr; return focusedFrame; } LocalFrame* WebViewImpl::focusedLocalFrameAvailableForIme() const { return m_imeAcceptEvents ? focusedLocalFrameInWidget() : nullptr; } } // namespace blink