| // Copyright 2014 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 "third_party/blink/renderer/core/frame/remote_frame_view.h" |
| |
| #include "components/paint_preview/common/paint_preview_tracker.h" |
| #include "third_party/blink/public/common/frame/frame_owner_element_type.h" |
| #include "third_party/blink/renderer/core/dom/document.h" |
| #include "third_party/blink/renderer/core/frame/local_frame.h" |
| #include "third_party/blink/renderer/core/frame/local_frame_view.h" |
| #include "third_party/blink/renderer/core/frame/remote_frame.h" |
| #include "third_party/blink/renderer/core/frame/remote_frame_client.h" |
| #include "third_party/blink/renderer/core/html/html_frame_owner_element.h" |
| #include "third_party/blink/renderer/core/layout/layout_embedded_content.h" |
| #include "third_party/blink/renderer/core/layout/layout_view.h" |
| #include "third_party/blink/renderer/core/page/page.h" |
| #include "third_party/blink/renderer/platform/geometry/int_rect.h" |
| #include "third_party/blink/renderer/platform/graphics/graphics_context.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/cull_rect.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/drawing_recorder.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/foreign_layer_display_item.h" |
| |
| namespace blink { |
| |
| RemoteFrameView::RemoteFrameView(RemoteFrame* remote_frame) |
| : FrameView(IntRect()), remote_frame_(remote_frame) { |
| DCHECK(remote_frame); |
| Show(); |
| } |
| |
| RemoteFrameView::~RemoteFrameView() = default; |
| |
| LocalFrameView* RemoteFrameView::ParentFrameView() const { |
| if (!IsAttached()) |
| return nullptr; |
| |
| HTMLFrameOwnerElement* owner = remote_frame_->DeprecatedLocalOwner(); |
| if (owner && owner->OwnerType() == FrameOwnerElementType::kPortal) |
| return owner->GetDocument().GetFrame()->View(); |
| |
| // |is_attached_| is only set from AttachToLayout(), which ensures that the |
| // parent is a local frame. |
| return To<LocalFrame>(remote_frame_->Tree().Parent())->View(); |
| } |
| |
| LayoutEmbeddedContent* RemoteFrameView::GetLayoutEmbeddedContent() const { |
| return remote_frame_->OwnerLayoutObject(); |
| } |
| |
| LocalFrameView* RemoteFrameView::ParentLocalRootFrameView() const { |
| if (!IsAttached()) |
| return nullptr; |
| |
| HTMLFrameOwnerElement* owner = remote_frame_->DeprecatedLocalOwner(); |
| if (owner && owner->OwnerType() == FrameOwnerElementType::kPortal) |
| return owner->GetDocument().GetFrame()->LocalFrameRoot().View(); |
| |
| // |is_attached_| is only set from AttachToLayout(), which ensures that the |
| // parent is a local frame. |
| return To<LocalFrame>(remote_frame_->Tree().Parent()) |
| ->LocalFrameRoot() |
| .View(); |
| } |
| |
| void RemoteFrameView::AttachToLayout() { |
| DCHECK(!IsAttached()); |
| SetAttached(true); |
| if (ParentFrameView()->IsVisible()) |
| SetParentVisible(true); |
| UpdateFrameVisibility(true); |
| UpdateRenderThrottlingStatus( |
| IsHiddenForThrottling(), |
| ParentFrameView()->CanThrottleRenderingForPropagation()); |
| needs_frame_rect_propagation_ = true; |
| ParentFrameView()->SetNeedsUpdateGeometries(); |
| } |
| |
| void RemoteFrameView::DetachFromLayout() { |
| DCHECK(IsAttached()); |
| SetParentVisible(false); |
| SetAttached(false); |
| } |
| |
| bool RemoteFrameView::UpdateViewportIntersectionsForSubtree( |
| unsigned parent_flags) { |
| UpdateViewportIntersection(parent_flags, needs_occlusion_tracking_); |
| return needs_occlusion_tracking_; |
| } |
| |
| void RemoteFrameView::SetViewportIntersection( |
| const ViewportIntersectionState& intersection_state) { |
| if (intersection_state != last_intersection_state_) { |
| last_intersection_state_ = intersection_state; |
| remote_frame_->Client()->UpdateRemoteViewportIntersection( |
| intersection_state); |
| } |
| } |
| |
| void RemoteFrameView::SetNeedsOcclusionTracking(bool needs_tracking) { |
| if (needs_occlusion_tracking_ == needs_tracking) |
| return; |
| needs_occlusion_tracking_ = needs_tracking; |
| if (needs_tracking) { |
| if (LocalFrameView* parent_view = ParentLocalRootFrameView()) |
| parent_view->ScheduleAnimation(); |
| } |
| } |
| |
| IntRect RemoteFrameView::GetCompositingRect() { |
| LocalFrameView* local_root_view = ParentLocalRootFrameView(); |
| if (!local_root_view || !remote_frame_->OwnerLayoutObject()) |
| return IntRect(); |
| |
| // For main frames we constrain the rect that gets painted to the viewport. |
| // If the local frame root is an OOPIF itself, then we use the root's |
| // intersection rect. This represents a conservative maximum for the area |
| // that needs to be rastered by the OOPIF compositor. |
| IntSize viewport_size = local_root_view->Size(); |
| if (local_root_view->GetPage()->MainFrame() != local_root_view->GetFrame()) { |
| viewport_size = |
| local_root_view->GetFrame().RemoteViewportIntersection().Size(); |
| } |
| |
| // The viewport size needs to account for intermediate CSS transforms before |
| // being compared to the frame size. |
| PhysicalRect viewport_rect = |
| remote_frame_->OwnerLayoutObject()->AncestorToLocalRect( |
| local_root_view->GetLayoutView(), |
| PhysicalRect(PhysicalOffset(), PhysicalSize(viewport_size)), |
| kTraverseDocumentBoundaries); |
| IntSize converted_viewport_size = EnclosingIntRect(viewport_rect).Size(); |
| |
| IntSize frame_size = Size(); |
| |
| // Iframes that fit within the window viewport get fully rastered. For |
| // iframes that are larger than the window viewport, add a 30% buffer to the |
| // draw area to try to prevent guttering during scroll. |
| // TODO(kenrb): The 30% value is arbitrary, it gives 15% overdraw in both |
| // directions when the iframe extends beyond both edges of the viewport, and |
| // it seems to make guttering rare with slow to medium speed wheel scrolling. |
| // Can we collect UMA data to estimate how much extra rastering this causes, |
| // and possibly how common guttering is? |
| converted_viewport_size.Scale(1.3f); |
| converted_viewport_size.SetWidth( |
| std::min(frame_size.Width(), converted_viewport_size.Width())); |
| converted_viewport_size.SetHeight( |
| std::min(frame_size.Height(), converted_viewport_size.Height())); |
| IntPoint expanded_origin; |
| const IntRect& last_rect = last_intersection_state_.viewport_intersection; |
| if (!last_rect.IsEmpty()) { |
| IntSize expanded_size = |
| last_rect.Size().ExpandedTo(converted_viewport_size); |
| expanded_size -= last_rect.Size(); |
| expanded_size.Scale(0.5f, 0.5f); |
| expanded_origin = last_rect.Location() - expanded_size; |
| expanded_origin.ClampNegativeToZero(); |
| } |
| return IntRect(expanded_origin, converted_viewport_size); |
| } |
| |
| void RemoteFrameView::Dispose() { |
| HTMLFrameOwnerElement* owner_element = remote_frame_->DeprecatedLocalOwner(); |
| // ownerElement can be null during frame swaps, because the |
| // RemoteFrameView is disconnected before detachment. |
| if (owner_element && owner_element->OwnedEmbeddedContentView() == this) |
| owner_element->SetEmbeddedContentView(nullptr); |
| SetNeedsOcclusionTracking(false); |
| } |
| |
| void RemoteFrameView::InvalidateRect(const IntRect& rect) { |
| auto* object = remote_frame_->OwnerLayoutObject(); |
| if (!object) |
| return; |
| |
| PhysicalRect repaint_rect(rect); |
| repaint_rect.Move(PhysicalOffset(object->BorderLeft() + object->PaddingLeft(), |
| object->BorderTop() + object->PaddingTop())); |
| object->InvalidatePaintRectangle(repaint_rect); |
| } |
| |
| void RemoteFrameView::SetFrameRect(const IntRect& rect) { |
| EmbeddedContentView::SetFrameRect(rect); |
| if (needs_frame_rect_propagation_) |
| PropagateFrameRects(); |
| } |
| |
| void RemoteFrameView::PropagateFrameRects() { |
| // Update the rect to reflect the position of the frame relative to the |
| // containing local frame root. The position of the local root within |
| // any remote frames, if any, is accounted for by the embedder. |
| needs_frame_rect_propagation_ = false; |
| IntRect frame_rect(FrameRect()); |
| IntRect screen_space_rect = frame_rect; |
| |
| if (LocalFrameView* parent = ParentFrameView()) { |
| screen_space_rect = parent->ConvertToRootFrame(screen_space_rect); |
| } |
| remote_frame_->Client()->FrameRectsChanged(frame_rect, screen_space_rect); |
| } |
| |
| void RemoteFrameView::Paint(GraphicsContext& context, |
| const GlobalPaintFlags flags, |
| const CullRect& rect, |
| const IntSize& paint_offset) const { |
| if (!rect.Intersects(FrameRect())) |
| return; |
| |
| if (context.IsPrintingOrPaintingPreview()) { |
| DrawingRecorder recorder(context, *GetFrame().OwnerLayoutObject(), |
| DisplayItem::kDocumentBackground); |
| context.Save(); |
| context.Translate(paint_offset.Width(), paint_offset.Height()); |
| DCHECK(context.Canvas()); |
| |
| uint32_t content_id = 0; |
| if (context.Printing()) { |
| // Inform the remote frame to print. |
| content_id = Print(FrameRect(), context.Canvas()); |
| } else if (context.IsPaintingPreview()) { |
| // Inform the remote frame to capture a paint preview. |
| content_id = CapturePaintPreview(FrameRect(), context.Canvas()); |
| } |
| // Record the place holder id on canvas. |
| context.Canvas()->recordCustomData(content_id); |
| context.Restore(); |
| } |
| |
| if (RuntimeEnabledFeatures::CompositeAfterPaintEnabled() && |
| GetFrame().GetCcLayer()) { |
| auto offset = GetLayoutEmbeddedContent()->ReplacedContentRect().offset; |
| RecordForeignLayer(context, *GetFrame().OwnerLayoutObject(), |
| DisplayItem::kForeignLayerRemoteFrame, |
| GetFrame().GetCcLayer(), FloatPoint(offset)); |
| } |
| } |
| |
| void RemoteFrameView::UpdateGeometry() { |
| if (LayoutEmbeddedContent* layout = GetLayoutEmbeddedContent()) |
| layout->UpdateGeometry(*this); |
| } |
| |
| void RemoteFrameView::Hide() { |
| SetSelfVisible(false); |
| UpdateFrameVisibility( |
| !last_intersection_state_.viewport_intersection.IsEmpty()); |
| } |
| |
| void RemoteFrameView::Show() { |
| SetSelfVisible(true); |
| UpdateFrameVisibility( |
| !last_intersection_state_.viewport_intersection.IsEmpty()); |
| } |
| |
| void RemoteFrameView::ParentVisibleChanged() { |
| if (IsSelfVisible()) { |
| UpdateFrameVisibility( |
| !last_intersection_state_.viewport_intersection.IsEmpty()); |
| } |
| } |
| |
| void RemoteFrameView::VisibilityForThrottlingChanged() { |
| TRACE_EVENT0("blink", "RemoteFrameView::VisibilityForThrottlingChanged"); |
| remote_frame_->GetRemoteFrameHostRemote().UpdateRenderThrottlingStatus( |
| IsHiddenForThrottling(), IsSubtreeThrottled()); |
| } |
| |
| void RemoteFrameView::VisibilityChanged( |
| blink::mojom::FrameVisibility visibility) { |
| remote_frame_->GetRemoteFrameHostRemote().VisibilityChanged(visibility); |
| } |
| |
| bool RemoteFrameView::CanThrottleRendering() const { |
| return IsSubtreeThrottled() || IsHiddenForThrottling(); |
| } |
| |
| void RemoteFrameView::SetIntrinsicSizeInfo( |
| const IntrinsicSizingInfo& size_info) { |
| intrinsic_sizing_info_ = size_info; |
| has_intrinsic_sizing_info_ = true; |
| } |
| |
| bool RemoteFrameView::GetIntrinsicSizingInfo( |
| IntrinsicSizingInfo& sizing_info) const { |
| if (!has_intrinsic_sizing_info_) |
| return false; |
| |
| sizing_info = intrinsic_sizing_info_; |
| return true; |
| } |
| |
| bool RemoteFrameView::HasIntrinsicSizingInfo() const { |
| return has_intrinsic_sizing_info_; |
| } |
| |
| uint32_t RemoteFrameView::Print(const IntRect& rect, |
| cc::PaintCanvas* canvas) const { |
| return remote_frame_->Client()->Print(rect, canvas); |
| } |
| |
| uint32_t RemoteFrameView::CapturePaintPreview(const IntRect& rect, |
| cc::PaintCanvas* canvas) const { |
| auto* tracker = canvas->GetPaintPreviewTracker(); |
| DCHECK(tracker); // |tracker| must exist or there is a bug upstream. |
| |
| // Create a placeholder ID that maps to an embedding token. |
| HTMLFrameOwnerElement* owner = remote_frame_->DeprecatedLocalOwner(); |
| DCHECK(owner); |
| |
| // RACE: there is a possibility that the embedding token will be null and |
| // still be in a valid state. This can occur is the frame has recently |
| // navigated and the embedding token hasn't propagated from the FrameTreeNode |
| // to this HTMLFrameOwnerElement yet (over IPC). If the token is null the |
| // failure can be handled gracefully by simply ignoring the subframe in the |
| // result. |
| base::Optional<base::UnguessableToken> maybe_embedding_token = |
| owner->GetEmbeddingToken(); |
| if (!maybe_embedding_token.has_value()) |
| return 0; |
| uint32_t content_id = |
| tracker->CreateContentForRemoteFrame(rect, maybe_embedding_token.value()); |
| |
| // Send a request to the browser to trigger a capture of the remote frame. |
| remote_frame_->GetRemoteFrameHostRemote() |
| .CapturePaintPreviewOfCrossProcessSubframe(rect, tracker->Guid()); |
| return content_id; |
| } |
| |
| void RemoteFrameView::Trace(Visitor* visitor) { |
| visitor->Trace(remote_frame_); |
| } |
| |
| } // namespace blink |