mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-08 19:04:45 +00:00
b099eab802
All classes deriving from nsIFrame that did not have any subclasses themselves (at the time of writing this patch) have been marked with `final`. Some other Layout classes have also been made final, but this was opportunistic while working on nsIFrame subclasses, and is definitely not exhaustive, further patches welcome; refer to bug 1332680. Advantages of marking a class final include: - Allowing the compiler to devirtualize some method calls (i.e., calling virtual functions directly instead of going through the vtable), - Indicating that the class is not currently subclassed, - Preventing subclassing without being aware that this would remove the finalization benefits of the parent class. `final` does not signify that these classes should *never* be subclassed, this is left for developers to decide. Differential Revision: https://phabricator.services.mozilla.com/D5020 --HG-- extra : moz-landing-system : lando
106 lines
3.6 KiB
C++
106 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 NSSVGFOREIGNOBJECTFRAME_H__
|
|
#define NSSVGFOREIGNOBJECTFRAME_H__
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "nsContainerFrame.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsSVGDisplayableFrame.h"
|
|
#include "nsRegion.h"
|
|
#include "nsSVGUtils.h"
|
|
|
|
class gfxContext;
|
|
|
|
class nsSVGForeignObjectFrame final : public nsContainerFrame
|
|
, public nsSVGDisplayableFrame
|
|
{
|
|
friend nsContainerFrame*
|
|
NS_NewSVGForeignObjectFrame(nsIPresShell* aPresShell, ComputedStyle* aStyle);
|
|
protected:
|
|
explicit nsSVGForeignObjectFrame(ComputedStyle* aStyle);
|
|
|
|
public:
|
|
NS_DECL_QUERYFRAME
|
|
NS_DECL_FRAMEARENA_HELPERS(nsSVGForeignObjectFrame)
|
|
|
|
// nsIFrame:
|
|
virtual void Init(nsIContent* aContent,
|
|
nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) override;
|
|
virtual void DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData) override;
|
|
virtual nsresult AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute,
|
|
int32_t aModType) override;
|
|
|
|
virtual nsContainerFrame* GetContentInsertionFrame() override {
|
|
return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
|
|
}
|
|
|
|
virtual void Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus) override;
|
|
|
|
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists) override;
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const override
|
|
{
|
|
if (aFlags & eSupportsContainLayoutAndPaint) {
|
|
return false;
|
|
}
|
|
|
|
return nsContainerFrame::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eSVG | nsIFrame::eSVGForeignObject));
|
|
}
|
|
|
|
virtual bool IsSVGTransformed(Matrix *aOwnTransform,
|
|
Matrix *aFromParentTransform) const override;
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
virtual nsresult GetFrameName(nsAString& aResult) const override
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("SVGForeignObject"), aResult);
|
|
}
|
|
#endif
|
|
|
|
// nsSVGDisplayableFrame interface:
|
|
virtual void PaintSVG(gfxContext& aContext,
|
|
const gfxMatrix& aTransform,
|
|
imgDrawingParams& aImgParams,
|
|
const nsIntRect* aDirtyRect = nullptr) override;
|
|
virtual nsIFrame* GetFrameForPoint(const gfxPoint& aPoint) override;
|
|
virtual void ReflowSVG() override;
|
|
virtual void NotifySVGChanged(uint32_t aFlags) override;
|
|
virtual SVGBBox GetBBoxContribution(const Matrix &aToBBoxUserspace,
|
|
uint32_t aFlags) override;
|
|
virtual bool IsDisplayContainer() override { return true; }
|
|
|
|
gfxMatrix GetCanvasTM();
|
|
|
|
nsRect GetInvalidRegion();
|
|
|
|
// Return our ::-moz-svg-foreign-content anonymous box.
|
|
void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
|
|
|
|
protected:
|
|
// implementation helpers:
|
|
void DoReflow();
|
|
void RequestReflow(nsIPresShell::IntrinsicDirty aType);
|
|
|
|
// If width or height is less than or equal to zero we must disable rendering
|
|
bool IsDisabled() const { return mRect.width <= 0 || mRect.height <= 0; }
|
|
|
|
nsAutoPtr<gfxMatrix> mCanvasTM;
|
|
|
|
bool mInReflow;
|
|
};
|
|
|
|
#endif
|