layout/svg/nsSVGGFrame.cpp
author Nicholas Nethercote <nnethercote@mozilla.com>
Tue, 03 Oct 2017 09:05:19 +1100
changeset 385076 67a8e12324569dd730347187e2ffccae486c758b
parent 379147 b502be79aeb198e3d701ad4f61836b08fd1452eb
child 388808 905239391e05483e8fb221378dd2092c5a0df8b7
permissions -rw-r--r--
Bug 1400460 - Rename nsIAtom as nsAtom. r=hiro. (Path is actually r=froydnj.) Bug 1400459 devirtualized nsIAtom so that it is no longer a subclass of nsISupports. This means that nsAtom is now a better name for it than nsIAtom. MozReview-Commit-ID: 91U22X2NydP

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

// Main header first:
#include "nsSVGGFrame.h"

// Keep others in (case-insensitive) order:
#include "nsGkAtoms.h"
#include "SVGTransformableElement.h"
#include "nsIFrame.h"
#include "SVGGraphicsElement.h"
#include "nsSVGIntegrationUtils.h"
#include "nsSVGUtils.h"

using namespace mozilla::dom;

//----------------------------------------------------------------------
// Implementation

nsIFrame*
NS_NewSVGGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
  return new (aPresShell) nsSVGGFrame(aContext);
}

NS_IMPL_FRAMEARENA_HELPERS(nsSVGGFrame)

#ifdef DEBUG
void
nsSVGGFrame::Init(nsIContent*       aContent,
                  nsContainerFrame* aParent,
                  nsIFrame*         aPrevInFlow)
{
  NS_ASSERTION(aContent->IsSVGElement() &&
               static_cast<nsSVGElement*>(aContent)->IsTransformable(),
               "The element doesn't support nsIDOMSVGTransformable");

  nsSVGDisplayContainerFrame::Init(aContent, aParent, aPrevInFlow);
}
#endif /* DEBUG */

//----------------------------------------------------------------------
// nsSVGDisplayableFrame methods

nsresult
nsSVGGFrame::AttributeChanged(int32_t         aNameSpaceID,
                              nsAtom*        aAttribute,
                              int32_t         aModType)
{
  if (aNameSpaceID == kNameSpaceID_None &&
      aAttribute == nsGkAtoms::transform) {
    // We don't invalidate for transform changes (the layers code does that).
    // Also note that SVGTransformableElement::GetAttributeChangeHint will
    // return nsChangeHint_UpdateOverflow for "transform" attribute changes
    // and cause DoApplyRenderingChangeToTree to make the SchedulePaint call.
    NotifySVGChanged(TRANSFORM_CHANGED);
  }

  return NS_OK;
}