/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef NSSUBDOCUMENTFRAME_H_
#define NSSUBDOCUMENTFRAME_H_
#include "Units.h"
#include "mozilla/gfx/Matrix.h"
#include "nsAtomicContainerFrame.h"
#include "nsDisplayList.h"
#include "nsFrameLoader.h"
#include "nsIReflowCallback.h"
namespace mozilla {
class PresShell;
}
// namespace mozilla
namespace mozilla::layers {
class Layer;
class RenderRootStateManager;
class WebRenderLayerScrollData;
class WebRenderScrollData;
}
// namespace mozilla::layers
/******************************************************************************
* nsSubDocumentFrame
*****************************************************************************/
class nsSubDocumentFrame final :
public nsAtomicContainerFrame,
public nsIReflowCallback {
public:
NS_DECL_FRAMEARENA_HELPERS(nsSubDocumentFrame)
explicit nsSubDocumentFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext);
#ifdef DEBUG_FRAME_DUMP
void List(FILE* out = stderr,
const char* aPrefix =
"",
ListFlags aFlags = ListFlags())
const override;
nsresult GetFrameName(nsAString& aResult)
const override;
#endif
NS_DECL_QUERYFRAME
void Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
void Destroy(DestroyContext&) override;
nscoord IntrinsicISize(
const mozilla::IntrinsicSizeInput& aInput,
mozilla::IntrinsicISizeType aType) override;
mozilla::IntrinsicSize GetIntrinsicSize() override;
mozilla::AspectRatio GetIntrinsicRatio()
const override {
return GetIntrinsicRatio(
false);
}
mozilla::AspectRatio GetIntrinsicRatio(
bool aIgnoreContainment)
const;
const nsPoint& GetExtraOffset()
const {
return mExtraOffset; }
SizeComputationResult ComputeSize(
const SizeComputationInput& aSizingInput, mozilla::WritingMode aWM,
const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
const mozilla::LogicalSize& aMargin,
const mozilla::LogicalSize& aBorderPadding,
const mozilla::StyleSizeOverrides& aSizeOverrides,
mozilla::ComputeSizeFlags aFlags) override;
void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
AttrModType aModType) override;
void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
// if the content is "visibility:hidden", then just hide the view
// and all our contents. We don't extend "visibility:hidden" to
// the child content ourselves, since it belongs to a different
// document and CSS doesn't inherit in there.
bool SupportsVisibilityHidden() override {
return false; }
#ifdef ACCESSIBILITY
mozilla::a11y::AccType AccessibleType() override;
#endif
mozilla::IntrinsicSize ComputeIntrinsicSize(
bool aIgnoreContainment =
false)
const;
nsIDocShell* GetDocShell()
const;
nsIDocShell* GetExtantDocShell()
const;
nsresult BeginSwapDocShells(nsIFrame* aOther);
void EndSwapDocShells(nsIFrame* aOther);
mozilla::dom::Document* GetExtantSubdocument();
mozilla::PresShell* GetSubdocumentPresShell();
nsIFrame* GetSubdocumentRootFrame();
enum { IGNORE_PAINT_SUPPRESSION =
0x1 };
mozilla::PresShell* GetSubdocumentPresShellForPainting(uint32_t aFlags);
nsRect GetDestRect()
const;
nsRect GetDestRect(
const nsRect& aConstraintRect)
const;
mozilla::LayoutDeviceIntSize GetInitialSubdocumentSize()
const;
mozilla::LayoutDeviceIntSize GetSubdocumentSize()
const;
bool ContentReactsToPointerEvents()
const;
// nsIReflowCallback
bool ReflowFinished() override;
void ReflowCallbackCanceled() override;
/**
* Return true if pointer event hit-testing should be allowed to target
* content in the subdocument.
*/
bool PassPointerEventsToChildren();
void MaybeShowViewer() {
if (!mDidCreateDoc && !mCallingShow) {
ShowViewer();
}
}
nsFrameLoader* FrameLoader()
const;
enum class RetainPaintData :
bool { No, Yes };
void ResetFrameLoader(RetainPaintData);
void ClearRetainedPaintData();
void ClearDisplayItems();
void SubdocumentIntrinsicSizeOrRatioChanged();
struct RemoteFramePaintData {
mozilla::layers::LayersId mLayersId;
mozilla::dom::TabId mTabId{
0};
};
RemoteFramePaintData GetRemotePaintData()
const;
bool HasRetainedPaintData()
const {
return mRetainedRemoteFrame.isSome(); }
const mozilla::gfx::MatrixScales& GetRasterScale()
const {
return mRasterScale;
}
void SetRasterScale(
const mozilla::gfx::MatrixScales& aScale) {
mRasterScale = aScale;
}
const Maybe<nsRect>& GetVisibleRect()
const {
return mVisibleRect; }
void SetVisibleRect(
const Maybe<nsRect>& aRect) { mVisibleRect = aRect; }
void AddEmbeddingPresShell(mozilla::PresShell*);
void EnsureEmbeddingPresShell(mozilla::PresShell*);
void RemoveEmbeddingPresShell(mozilla::PresShell*);
protected:
friend class AsyncFrameInit;
void MaybeUpdateEmbedderColorScheme();
void MaybeUpdateEmbedderZoom();
void MaybeUpdateRemoteStyle(ComputedStyle* aOldComputedStyle = nullptr);
void PropagateIsUnderHiddenEmbedderElement(
bool aValue);
void UpdateEmbeddedBrowsingContextDependentData();
// Makes sure that all the live pres shells are pointing to `this`. Returns
// true if there's any live shells.
bool FixUpInProcessPresShellsAfterAttach();
void PrepareInProcessPresShellsForDetach();
bool IsInline()
const {
return mIsInline; }
// Show our document viewer. The document viewer is hidden via a script
// runner, so that we can save and restore the presentation if we're
// being reframed.
void ShowViewer();
mutable RefPtr<nsFrameLoader> mFrameLoader;
// The in-process pres shells that we're currently embedding. May be multiple
// because of in-process BFCache.
// TODO(emilio): Maybe that's not relevant anymore? We definitely hit that
// code-path, but maybe it could be simplified nowadays?
AutoTArray<nsWeakPtr,
1> mInProcessPresShells;
// When process-switching a remote tab, we might temporarily paint the old
// one.
Maybe<RemoteFramePaintData> mRetainedRemoteFrame;
nsWeakPtr mLastPaintedPresShell;
// The raster scale from our last paint.
mozilla::gfx::MatrixScales mRasterScale;
// The visible rect from our last paint.
Maybe<nsRect> mVisibleRect;
// The extra offset from our padding box to the child, needed to deal with
// object-fit and co.
nsPoint mExtraOffset;
bool mIsInline :
1;
bool mPostedReflowCallback :
1;
bool mDidCreateDoc :
1;
bool mCallingShow :
1;
bool mIsInObjectOrEmbed :
1;
};
namespace mozilla {
/**
* A nsDisplayRemote will graft a remote frame's shadow layer tree (for a given
* nsFrameLoader) into its parent frame's layer tree.
*/
class nsDisplayRemote final :
public nsPaintedDisplayItem {
typedef mozilla::dom::TabId TabId;
typedef mozilla::gfx::Matrix4x4 Matrix4x4;
typedef mozilla::layers::EventRegionsOverride EventRegionsOverride;
typedef mozilla::layers::LayersId LayersId;
typedef mozilla::layers::StackingContextHelper StackingContextHelper;
typedef mozilla::LayoutDeviceRect LayoutDeviceRect;
typedef mozilla::LayoutDevicePoint LayoutDevicePoint;
public:
nsDisplayRemote(nsDisplayListBuilder* aBuilder, nsSubDocumentFrame* aFrame);
void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
bool CreateWebRenderCommands(
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
const StackingContextHelper& aSc,
mozilla::layers::RenderRootStateManager* aManager,
nsDisplayListBuilder* aDisplayListBuilder) override;
bool UpdateScrollData(
mozilla::layers::WebRenderScrollData* aData,
mozilla::layers::WebRenderLayerScrollData* aLayerData) override;
NS_DISPLAY_DECL_NAME(
"Remote", TYPE_REMOTE)
private:
friend class nsDisplayItem;
using RemoteFramePaintData = nsSubDocumentFrame::RemoteFramePaintData;
nsFrameLoader* GetFrameLoader()
const;
RemoteFramePaintData mPaintData;
LayoutDevicePoint mOffset;
EventRegionsOverride mEventRegionsOverride;
};
}
// namespace mozilla
#endif /* NSSUBDOCUMENTFRAME_H_ */