blob: b7febba61de2018127b365ae9d707030406098e5 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <vector>
#include "base/callback_forward.h"
#include "base/macros.h"
#include "base/observer_list.h"
#include "base/process/kill.h"
#include "base/strings/string16.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "components/viz/common/quads/compositor_frame.h"
#include "components/viz/common/surfaces/scoped_surface_id_allocator.h"
#include "components/viz/common/surfaces/surface_id.h"
#include "components/viz/host/hit_test/hit_test_query.h"
#include "content/browser/renderer_host/event_with_latency_info.h"
#include "content/common/content_export.h"
#include "content/public/browser/render_frame_metadata_provider.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/common/input_event_ack_state.h"
#include "content/public/common/screen_info.h"
#include "content/public/common/widget_type.h"
#include "services/viz/public/interfaces/compositing/compositor_frame_sink.mojom.h"
#include "services/viz/public/interfaces/hit_test/hit_test_region_list.mojom.h"
#include "third_party/blink/public/common/screen_orientation/web_screen_orientation_type.h"
#include "third_party/blink/public/platform/web_intrinsic_sizing_info.h"
#include "third_party/blink/public/web/web_text_direction.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "ui/accessibility/ax_tree_id_registry.h"
#include "ui/base/ime/text_input_mode.h"
#include "ui/base/ime/text_input_type.h"
#include "ui/display/display.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/range/range.h"
#include "ui/surface/transport_dib.h"
#if defined(USE_AURA)
#include "base/containers/flat_map.h"
#include "content/common/render_widget_window_tree_client_factory.mojom.h"
#include "services/ws/public/mojom/window_tree.mojom.h"
struct WidgetHostMsg_SelectionBounds_Params;
namespace base {
class UnguessableToken;
namespace cc {
struct BeginFrameAck;
} // namespace cc
namespace blink {
class WebMouseEvent;
class WebMouseWheelEvent;
namespace ui {
enum class DomCode;
class LatencyInfo;
class Layer;
struct DidOverscrollParams;
namespace viz {
class SurfaceHittestDelegate;
namespace content {
class BrowserAccessibilityDelegate;
class BrowserAccessibilityManager;
class CursorManager;
class MouseWheelPhaseHandler;
class RenderWidgetHostImpl;
class RenderWidgetHostViewBaseObserver;
class SyntheticGestureTarget;
class TextInputManager;
class TouchSelectionControllerClientManager;
class WebContentsAccessibility;
class WebCursor;
class DelegatedFrameHost;
struct TextInputState;
// Basic implementation shared by concrete RenderWidgetHostView subclasses.
class CONTENT_EXPORT RenderWidgetHostViewBase
: public RenderWidgetHostView,
public RenderFrameMetadataProvider::Observer {
using CreateCompositorFrameSinkCallback =
base::OnceCallback<void(const viz::FrameSinkId&)>;
~RenderWidgetHostViewBase() override;
float current_device_scale_factor() const {
return current_device_scale_factor_;
// Returns the focused RenderWidgetHost inside this |view|'s RWH.
RenderWidgetHostImpl* GetFocusedWidget() const;
// RenderWidgetHostView implementation.
RenderWidgetHost* GetRenderWidgetHost() const final;
ui::TextInputClient* GetTextInputClient() override;
void WasUnOccluded() override {}
void WasOccluded() override {}
void SetIsInVR(bool is_in_vr) override;
base::string16 GetSelectedText() override;
bool IsMouseLocked() override;
bool LockKeyboard(base::Optional<base::flat_set<ui::DomCode>> codes) override;
void SetBackgroundColor(SkColor color) override;
base::Optional<SkColor> GetBackgroundColor() const override;
void UnlockKeyboard() override;
bool IsKeyboardLocked() override;
base::flat_map<std::string, std::string> GetKeyboardLayoutMap() override;
gfx::Size GetVisibleViewportSize() const override;
void SetInsets(const gfx::Insets& insets) override;
bool IsSurfaceAvailableForCopy() const override;
void CopyFromSurface(
const gfx::Rect& src_rect,
const gfx::Size& output_size,
base::OnceCallback<void(const SkBitmap&)> callback) override;
std::unique_ptr<viz::ClientFrameSinkVideoCapturer> CreateVideoCapturer()
void FocusedNodeTouched(bool editable) override;
void GetScreenInfo(ScreenInfo* screen_info) const override;
void EnableAutoResize(const gfx::Size& min_size,
const gfx::Size& max_size) override;
void DisableAutoResize(const gfx::Size& new_size) override;
bool IsScrollOffsetAtTop() const override;
float GetDeviceScaleFactor() const final;
GetTouchSelectionControllerClientManager() override;
// This only needs to be overridden by RenderWidgetHostViewBase subclasses
// that handle content embedded within other RenderWidgetHostViews.
gfx::PointF TransformPointToRootCoordSpaceF(
const gfx::PointF& point) override;
gfx::PointF TransformRootPointToViewCoordSpace(
const gfx::PointF& point) override;
// RenderFrameMetadataProvider::Observer
void OnRenderFrameMetadataChangedBeforeActivation(
const cc::RenderFrameMetadata& metadata) override;
void OnRenderFrameMetadataChangedAfterActivation() override;
void OnRenderFrameSubmission() override;
void OnLocalSurfaceIdChanged(
const cc::RenderFrameMetadata& metadata) override;
virtual void UpdateIntrinsicSizingInfo(
const blink::WebIntrinsicSizingInfo& sizing_info);
static void CopyMainAndPopupFromSurface(
base::WeakPtr<RenderWidgetHostImpl> main_host,
base::WeakPtr<DelegatedFrameHost> main_frame_host,
base::WeakPtr<RenderWidgetHostImpl> popup_host,
base::WeakPtr<DelegatedFrameHost> popup_frame_host,
const gfx::Rect& src_subrect,
const gfx::Size& dst_size,
float scale_factor,
base::OnceCallback<void(const SkBitmap&)> callback);
void SetWidgetType(WidgetType widget_type);
WidgetType GetWidgetType();
// Return a value that is incremented each time the renderer swaps a new frame
// to the view.
uint32_t RendererFrameNumber();
// Called each time the RenderWidgetHost receives a new frame for display from
// the renderer.
void DidReceiveRendererFrame();
// Notification that a resize or move session ended on the native widget.
void UpdateScreenInfo(gfx::NativeView view);
// Tells if the display property (work area/scale factor) has
// changed since the last time.
bool HasDisplayPropertyChanged(gfx::NativeView view);
// Called by the TextInputManager to notify the view about being removed from
// the list of registered views, i.e., TextInputManager is no longer tracking
// TextInputState from this view. The RWHV should reset |text_input_manager_|
// to nullptr.
void DidUnregisterFromTextInputManager(TextInputManager* text_input_manager);
// Informs the view that the renderer's visual properties have been updated
// and a new viz::LocalSurfaceId has been allocated.
virtual viz::ScopedSurfaceIdAllocator DidUpdateVisualProperties(
const cc::RenderFrameMetadata& metadata);
base::WeakPtr<RenderWidgetHostViewBase> GetWeakPtr();
// The following methods can be overridden by derived classes.
// Returns the root-view associated with this view. Always returns |this| for
// non-embeddable derived views.
virtual RenderWidgetHostViewBase* GetRootView();
// Notifies the View that the renderer text selection has changed.
virtual void SelectionChanged(const base::string16& text,
size_t offset,
const gfx::Range& range);
// The requested size of the renderer. May differ from GetViewBounds().size()
// when the view requires additional throttling.
virtual gfx::Size GetRequestedRendererSize() const;
// Returns the current capture sequence number.
virtual uint32_t GetCaptureSequenceNumber() const;
// The size of the view's backing surface in non-DPI-adjusted pixels.
virtual gfx::Size GetCompositorViewportPixelSize() const;
// Whether or not the renderer's viewport size should be shrunk by the height
// of the URL-bar.
virtual bool DoBrowserControlsShrinkRendererSize() const;
// The height of the URL-bar browser controls.
virtual float GetTopControlsHeight() const;
// The height of the bottom bar.
virtual float GetBottomControlsHeight() const;
// If mouse wheels can only specify the number of ticks of some static
// multiplier constant, this method returns that constant (in DIPs). If mouse
// wheels can specify an arbitrary delta this returns 0.
virtual int GetMouseWheelMinimumGranularity() const;
// Called prior to forwarding input event messages to the renderer, giving
// the view a chance to perform in-process event filtering or processing.
// Return values of |NOT_CONSUMED| or |UNKNOWN| will result in |input_event|
// being forwarded.
virtual InputEventAckState FilterInputEvent(
const blink::WebInputEvent& input_event);
// Allows a root RWHV to filter gesture events in a child.
// TODO(mcnee): Remove once both callers are removed, following
// scroll-latching being enabled and BrowserPlugin being removed.
virtual InputEventAckState FilterChildGestureEvent(
const blink::WebGestureEvent& gesture_event);
virtual void WheelEventAck(const blink::WebMouseWheelEvent& event,
InputEventAckState ack_result);
virtual void GestureEventAck(const blink::WebGestureEvent& event,
InputEventAckState ack_result);
// Create a platform specific SyntheticGestureTarget implementation that will
// be used to inject synthetic input events.
virtual std::unique_ptr<SyntheticGestureTarget>
// Create a BrowserAccessibilityManager for a frame in this view.
// If |for_root_frame| is true, creates a BrowserAccessibilityManager
// suitable for the root frame, which may be linked to its native
// window container.
virtual BrowserAccessibilityManager* CreateBrowserAccessibilityManager(
BrowserAccessibilityDelegate* delegate, bool for_root_frame);
virtual void AccessibilityShowMenu(const gfx::Point& point);
virtual gfx::AcceleratedWidget AccessibilityGetAcceleratedWidget();
virtual gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible();
virtual gfx::NativeViewAccessible
virtual void SetMainFrameAXTreeID(ui::AXTreeID id) {}
// Informs that the focused DOM node has changed.
virtual void FocusedNodeChanged(bool is_editable_node,
const gfx::Rect& node_bounds_in_screen) {}
// This method is called by RenderWidgetHostImpl when a new
// RendererCompositorFrameSink is created in the renderer. The view is
// expected not to return resources belonging to the old
// RendererCompositorFrameSink after this method finishes.
virtual void DidCreateNewRendererCompositorFrameSink(
renderer_compositor_frame_sink) = 0;
// This is called by the RenderWidgetHostImpl to provide a new compositor
// frame that was received from the renderer process. if Viz service hit
// testing is enabled then a HitTestRegionList provides hit test data
// that is used for routing input events.
// TODO(kenrb): When Viz service is enabled on all platforms,
// |hit_test_region_list| should stop being an optional argument.
virtual void SubmitCompositorFrame(
const viz::LocalSurfaceId& local_surface_id,
viz::CompositorFrame frame,
base::Optional<viz::HitTestRegionList> hit_test_region_list) = 0;
virtual void OnDidNotProduceFrame(const viz::BeginFrameAck& ack) {}
// This method exists to allow removing of displayed graphics, after a new
// page has been loaded, to prevent the displayed URL from being out of sync
// with what is visible on screen.
virtual void ClearCompositorFrame() = 0;
// This method will reset the fallback to the first surface after navigation.
virtual void ResetFallbackToFirstNavigationSurface() = 0;
// Requests a new CompositorFrame from the renderer. This is done by
// allocating a new viz::LocalSurfaceId which forces a commit and draw.
virtual bool RequestRepaintForTesting();
// Because the associated remote WebKit instance can asynchronously
// prevent-default on a dispatched touch event, the touch events are queued in
// the GestureRecognizer until invocation of ProcessAckedTouchEvent releases
// it to be consumed (when |ack_result| is NOT_CONSUMED OR NO_CONSUMER_EXISTS)
// or ignored (when |ack_result| is CONSUMED).
// |touch|'s coordinates are in the coordinate space of the view to which it
// was targeted.
virtual void ProcessAckedTouchEvent(const TouchEventWithLatencyInfo& touch,
InputEventAckState ack_result);
virtual void DidOverscroll(const ui::DidOverscrollParams& params) {}
virtual void DidStopFlinging() {}
// Returns the ID associated with the CompositorFrameSink of this view.
virtual const viz::FrameSinkId& GetFrameSinkId() const = 0;
// Returns the LocalSurfaceId allocated by the parent client for this view.
virtual const viz::LocalSurfaceIdAllocation& GetLocalSurfaceIdAllocation()
const = 0;
// When there are multiple RenderWidgetHostViews for a single page, input
// events need to be targeted to the correct one for handling. The following
// methods are invoked on the RenderWidgetHostView that should be able to
// properly handle the event (i.e. it has focus for keyboard events, or has
// been identified by hit testing mouse, touch or gesture events).
// |out_query_renderer| is set if there is low confidence in the hit test
// result which means that renderer process hit testing could potentially
// give a different result. In that case the returned FrameSinkId and
// transformed point should be ignored.
virtual viz::FrameSinkId FrameSinkIdAtPoint(
viz::SurfaceHittestDelegate* delegate,
const gfx::PointF& point,
gfx::PointF* transformed_point,
bool* out_query_renderer);
virtual void InjectTouchEvent(const blink::WebTouchEvent& event,
const ui::LatencyInfo& latency) {}
virtual void PreProcessMouseEvent(const blink::WebMouseEvent& event) {}
virtual void PreProcessTouchEvent(const blink::WebTouchEvent& event) {}
void ProcessMouseEvent(const blink::WebMouseEvent& event,
const ui::LatencyInfo& latency);
void ProcessMouseWheelEvent(const blink::WebMouseWheelEvent& event,
const ui::LatencyInfo& latency);
void ProcessTouchEvent(const blink::WebTouchEvent& event,
const ui::LatencyInfo& latency);
virtual void ProcessGestureEvent(const blink::WebGestureEvent& event,
const ui::LatencyInfo& latency);
// Transform a point that is in the coordinate space of a Surface that is
// embedded within the RenderWidgetHostViewBase's Surface to the
// coordinate space of an embedding, or embedded, Surface. Typically this
// means that a point was received from an out-of-process iframe's
// RenderWidget and needs to be translated to viewport coordinates for the
// root RWHV, in which case this method is called on the root RWHV with the
// out-of-process iframe's SurfaceId.
// Returns false when this attempts to transform a point between coordinate
// spaces of surfaces where one does not contain the other. To transform
// between sibling surfaces, the point must be transformed to the root's
// coordinate space as an intermediate step.
bool TransformPointToLocalCoordSpace(
const gfx::PointF& point,
const viz::SurfaceId& original_surface,
gfx::PointF* transformed_point,
viz::EventSource source = viz::EventSource::ANY);
// This is deprecated, and will be removed once Viz hit-test is the default.
virtual bool TransformPointToLocalCoordSpaceLegacy(
const gfx::PointF& point,
const viz::SurfaceId& original_surface,
gfx::PointF* transformed_point);
// Given a RenderWidgetHostViewBase that renders to a Surface that is
// contained within this class' Surface, find the relative transform between
// the Surfaces and apply it to a point. Returns false if a Surface has not
// yet been created or if |target_view| is not a descendant RWHV from our
// client.
virtual bool TransformPointToCoordSpaceForView(
const gfx::PointF& point,
RenderWidgetHostViewBase* target_view,
gfx::PointF* transformed_point,
viz::EventSource source = viz::EventSource::ANY);
// On success, returns true and modifies |*transform| to represent the
// transformation mapping a point in the coordinate space of this view
// into the coordinate space of the target view.
// On Failure, returns false, and leaves |*transform| unchanged.
// This function will fail if viz hit testing is not enabled, or if either
// this view or the target view has no current FrameSinkId. The latter may
// happen if either view is not currently visible in the viewport.
// This function is useful if there are multiple points to transform between
// the same two views. |target_view| must be non-null.
bool GetTransformToViewCoordSpace(RenderWidgetHostViewBase* target_view,
gfx::Transform* transform);
// TODO(kenrb, wjmaclean): This is a temporary subclass identifier for
// RenderWidgetHostViewGuests that is needed for special treatment during
// input event routing. It can be removed either when RWHVGuests properly
// support direct mouse event routing, or when RWHVGuest is removed
// entirely, which comes first.
virtual bool IsRenderWidgetHostViewGuest();
// Subclass identifier for RenderWidgetHostViewChildFrames. This is useful
// to be able to know if this RWHV is embedded within another RWHV. If
// other kinds of embeddable RWHVs are created, this should be renamed to
// a more generic term -- in which case, static casts to RWHVChildFrame will
// need to also be resolved.
virtual bool IsRenderWidgetHostViewChildFrame();
// Notify the View that a screen rect update is being sent to the
// RenderWidget. Related platform-specific updates can be sent from here.
virtual void WillSendScreenRects() {}
// Returns true if the current view is in virtual reality mode.
virtual bool IsInVR() const;
// Obtains the root window FrameSinkId.
virtual viz::FrameSinkId GetRootFrameSinkId();
// Returns the SurfaceId currently in use by the renderer to submit compositor
// frames.
virtual viz::SurfaceId GetCurrentSurfaceId() const = 0;
// Returns true if this view's size have been initialized.
virtual bool HasSize() const;
// Informs the view that the assocaited InterstitialPage was attached.
virtual void OnInterstitialPageAttached() {}
// Tells the view that the assocaited InterstitialPage will going away (but is
// not yet destroyed, as InterstitialPage destruction is asynchronous). The
// view may use this notification to clean up associated resources. This
// should be called before the WebContents is fully destroyed.
virtual void OnInterstitialPageGoingAway() {}
// The following methods are related to IME.
// TODO(ekaramad): Most of the IME methods should not stay virtual after IME
// is implemented for OOPIF. After fixing IME, mark the corresponding methods
// non-virtual (
// Updates the state of the input method attached to the view.
virtual void TextInputStateChanged(const TextInputState& text_input_state);
// Cancel the ongoing composition of the input method attached to the view.
virtual void ImeCancelComposition();
// Notifies the view that the renderer selection bounds has changed.
// Selection bounds are described as a focus bound which is the current
// position of caret on the screen, as well as the anchor bound which is the
// starting position of the selection. The coordinates are with respect to
// RenderWidget's window's origin. Focus and anchor bound are represented as
// gfx::Rect.
virtual void SelectionBoundsChanged(
const WidgetHostMsg_SelectionBounds_Params& params);
// Updates the range of the marked text in an IME composition.
virtual void ImeCompositionRangeChanged(
const gfx::Range& range,
const std::vector<gfx::Rect>& character_bounds);
// The following pure virtual methods are implemented by derived classes.
// Perform all the initialization steps necessary for this object to represent
// a popup (such as a <select> dropdown), then shows the popup at |pos|.
virtual void InitAsPopup(RenderWidgetHostView* parent_host_view,
const gfx::Rect& bounds) = 0;
// Perform all the initialization steps necessary for this object to represent
// a full screen window.
// |reference_host_view| is the view associated with the creating page that
// helps to position the full screen widget on the correct monitor.
virtual void InitAsFullscreen(RenderWidgetHostView* reference_host_view) = 0;
// Sets the cursor for this view to the one associated with the specified
// cursor_type.
virtual void UpdateCursor(const WebCursor& cursor) = 0;
// Changes the cursor that is displayed on screen. This may or may not match
// the current cursor's view which was set by UpdateCursor.
virtual void DisplayCursor(const WebCursor& cursor);
// Views that manage cursors for window return a CursorManager. Other views
// return nullptr.
virtual CursorManager* GetCursorManager();
// Indicates whether the page has finished loading.
virtual void SetIsLoading(bool is_loading) = 0;
// Notifies the View that the renderer has ceased to exist.
virtual void RenderProcessGone(base::TerminationStatus status,
int error_code) = 0;
// Tells the View to destroy itself.
virtual void Destroy();
// Tells the View that the tooltip text for the current mouse position over
// the page has changed.
virtual void SetTooltipText(const base::string16& tooltip_text) = 0;
// Displays the requested tooltip on the screen.
virtual void DisplayTooltipText(const base::string16& tooltip_text) {}
// Transforms |point| to be in the coordinate space of browser compositor's
// surface. This is in DIP.
virtual void TransformPointToRootSurface(gfx::PointF* point);
// Gets the bounds of the top-level window, in screen coordinates.
virtual gfx::Rect GetBoundsInRootWindow() = 0;
// Called by the WebContentsImpl when a user tries to navigate a new page on
// main frame.
virtual void OnDidNavigateMainFrameToNewPage();
// Called by WebContentsImpl to notify the view about a change in visibility
// of context menu. The view can then perform platform specific tasks and
// changes.
virtual void SetShowingContextMenu(bool showing) {}
virtual void OnAutoscrollStart();
// Returns the associated RenderWidgetHostImpl.
RenderWidgetHostImpl* host() const { return host_; }
// Process swap messages sent before |frame_token| in RenderWidgetHostImpl.
void OnFrameTokenChangedForView(uint32_t frame_token);
// Add and remove observers for lifetime event notifications. The order in
// which notifications are sent to observers is undefined. Clients must be
// sure to remove the observer before they go away.
void AddObserver(RenderWidgetHostViewBaseObserver* observer);
void RemoveObserver(RenderWidgetHostViewBaseObserver* observer);
// Returns a reference to the current instance of TextInputManager. The
// reference is obtained from RenderWidgetHostDelegate. The first time a non-
// null reference is obtained, its value is cached in |text_input_manager_|
// and this view is registered with it. The RWHV will unregister from the
// TextInputManager if it is destroyed or if the TextInputManager itself is
// destroyed. The unregistration of the RWHV from TextInputManager is
// necessary and must be done by explicitly calling
// TextInputManager::Unregister.
// It is safer to use this method rather than directly dereferencing
// |text_input_manager_|.
TextInputManager* GetTextInputManager();
void StopFling();
bool is_fullscreen() { return is_fullscreen_; }
void set_web_contents_accessibility(WebContentsAccessibility* wcax) {
web_contents_accessibility_ = wcax;
void set_is_currently_scrolling_viewport(
bool is_currently_scrolling_viewport) {
is_currently_scrolling_viewport_ = is_currently_scrolling_viewport;
bool is_currently_scrolling_viewport() {
return is_currently_scrolling_viewport_;
#if defined(USE_AURA)
void EmbedChildFrameRendererWindowTreeClient(
RenderWidgetHostViewBase* root_view,
int routing_id,
ws::mojom::WindowTreeClientPtr renderer_window_tree_client);
void OnChildFrameDestroyed(int routing_id);
#if defined(OS_MACOSX)
// Use only for resize on macOS. Returns true if there is not currently a
// frame of the view's size being displayed.
virtual bool ShouldContinueToPauseForFrame();
// Specify a ui::Layer into which the renderer's content should be
// composited. If nullptr is specified, then this layer will create a
// separate ui::Compositor as needed (e.g, for tab capture).
virtual void SetParentUiLayer(ui::Layer* parent_ui_layer);
virtual void DidNavigate();
// Called when the RenderWidgetHostImpl has be initialized.
virtual void OnRenderWidgetInit() {}
void set_is_evicted() { is_evicted_ = true; }
void reset_is_evicted() { is_evicted_ = false; }
bool is_evicted() { return is_evicted_; }
explicit RenderWidgetHostViewBase(RenderWidgetHost* host);
// SetContentBackgroundColor is called when the render wants to update the
// view's background color.
void SetContentBackgroundColor(SkColor color);
void NotifyObserversAboutShutdown();
virtual MouseWheelPhaseHandler* GetMouseWheelPhaseHandler();
// Applies background color without notifying the RenderWidget about
// opaqueness changes. This allows us to, when navigating to a new page,
// transfer this color to that page. This allows us to pass this background
// color to new views on navigation.
virtual void UpdateBackgroundColor() = 0;
// Stops flinging if a GSU event with momentum phase is sent to the renderer
// but not consumed.
virtual void StopFlingingIfNecessary(const blink::WebGestureEvent& event,
InputEventAckState ack_result);
#if defined(USE_AURA)
virtual void ScheduleEmbed(
ws::mojom::WindowTreeClientPtr client,
base::OnceCallback<void(const base::UnguessableToken&)> callback);
ws::mojom::WindowTreeClientPtr GetWindowTreeClientFromRenderer();
// If |event| is a touchpad pinch or double tap event for which we've sent a
// synthetic wheel event, forward the |event| to the renderer, subject to
// |ack_result| which is the ACK result of the synthetic wheel.
virtual void ForwardTouchpadZoomEventIfNecessary(
const blink::WebGestureEvent& event,
InputEventAckState ack_result);
virtual bool HasFallbackSurface() const;
// Cached bool to test if the VizHitTesting feature is enabled.
const bool use_viz_hit_test_;
// The model object. Members will become private when
// RenderWidgetHostViewGuest is removed.
RenderWidgetHostImpl* host_;
// Is this a fullscreen view?
bool is_fullscreen_ = false;
// Whether this view is a frame or a popup.
WidgetType widget_type_ = WidgetType::kFrame;
// Indicates whether keyboard lock is active for this view.
bool keyboard_locked_ = false;
// Indicates whether the scroll offset of the root layer is at top, i.e.,
// whether scroll_offset.y() == 0.
bool is_scroll_offset_at_top_ = true;
// The scale factor of the display the renderer is currently on.
float current_device_scale_factor_ = 0;
// The color space of the display the renderer is currently on.
gfx::ColorSpace current_display_color_space_;
// The orientation of the display the renderer is currently on.
display::Display::Rotation current_display_rotation_ =
// A reference to current TextInputManager instance this RWHV is registered
// with. This is initially nullptr until the first time the view calls
// GetTextInputManager(). It also becomes nullptr when TextInputManager is
// destroyed before the RWHV is destroyed.
TextInputManager* text_input_manager_ = nullptr;
// The background color used in the current renderer.
base::Optional<SkColor> content_background_color_;
// The default background color used before getting the
// |content_background_color|.
base::Optional<SkColor> default_background_color_;
WebContentsAccessibility* web_contents_accessibility_ = nullptr;
bool is_currently_scrolling_viewport_ = false;
void SynchronizeVisualProperties();
#if defined(USE_AURA)
void OnDidScheduleEmbed(int routing_id,
int embed_id,
const base::UnguessableToken& token);
// Called when display properties that need to be synchronized with the
// renderer process changes. This method is called before notifying
// RenderWidgetHostImpl in order to allow the view to allocate a new
// LocalSurfaceId.
virtual void OnSynchronizedDisplayPropertiesChanged() {}
// Transforms |point| from |original_view| coord space to |target_view| coord
// space. Result is stored in |transformed_point|. Returns true if the
// transform is successful, false otherwise.
bool TransformPointToTargetCoordSpace(RenderWidgetHostViewBase* original_view,
RenderWidgetHostViewBase* target_view,
const gfx::PointF& point,
gfx::PointF* transformed_point,
viz::EventSource source) const;
// Used to transform |point| when Viz hit-test is enabled.
// TransformPointToLocalCoordSpaceLegacy is used in non-Viz hit-testing.
bool TransformPointToLocalCoordSpaceViz(
const gfx::PointF& point,
const viz::SurfaceId& original_surface,
gfx::PointF* transformed_point,
viz::EventSource source);
bool view_stopped_flinging_for_test() const {
return view_stopped_flinging_for_test_;
gfx::Rect current_display_area_;
uint32_t renderer_frame_number_ = 0;
base::ObserverList<RenderWidgetHostViewBaseObserver>::Unchecked observers_;
#if defined(USE_AURA)
mojom::RenderWidgetWindowTreeClientPtr render_widget_window_tree_client_;
int next_embed_id_ = 0;
// Maps from routing_id to embed-id. The |routing_id| is the id supplied to
// EmbedChildFrameRendererWindowTreeClient() and the embed-id a unique id
// generate at the time EmbedChildFrameRendererWindowTreeClient() was called.
// This is done to ensure when OnDidScheduleEmbed() is received another call
// too EmbedChildFrameRendererWindowTreeClient() did not come in.
base::flat_map<int, int> pending_embeds_;
base::Optional<blink::WebGestureEvent> pending_touchpad_pinch_begin_;
// True when StopFlingingIfNecessary() calls StopFling().
bool view_stopped_flinging_for_test_ = false;
bool is_evicted_ = false;
base::WeakPtrFactory<RenderWidgetHostViewBase> weak_factory_;
} // namespace content