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/* -*- 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
NS_IMETHODIMP
nsSVGGFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsCOMPtr<SVGTransformableElement> transformable = do_QueryInterface(aContent);
NS_ASSERTION(transformable,
"The element doesn't support nsIDOMSVGTransformable\n");
return nsSVGGFrameBase::Init(aContent, aParent, aPrevInFlow);
}
#endif /* DEBUG */
nsIAtom *
nsSVGGFrame::GetType() const
{
return nsGkAtoms::svgGFrame;
}
//----------------------------------------------------------------------
// nsISVGChildFrame methods
void
nsSVGGFrame::NotifySVGChanged(uint32_t aFlags)
{
NS_ABORT_IF_FALSE(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
"Invalidation logic may need adjusting");
if (aFlags & TRANSFORM_CHANGED) {
// make sure our cached transform matrix gets (lazily) updated
mCanvasTM = nullptr;
}
nsSVGGFrameBase::NotifySVGChanged(aFlags);
}
gfxMatrix
nsSVGGFrame::GetCanvasTM(uint32_t aFor)
{
if (!(GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD)) {
if ((aFor == FOR_PAINTING && NS_SVGDisplayListPaintingEnabled()) ||
(aFor == FOR_HIT_TESTING && NS_SVGDisplayListHitTestingEnabled())) {
return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this);
}
}
if (!mCanvasTM) {
NS_ASSERTION(mParent, "null parent");
nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(mParent);
SVGGraphicsElement *content = static_cast<SVGGraphicsElement*>(mContent);
gfxMatrix tm = content->PrependLocalTransformsTo(parent->GetCanvasTM(aFor));
mCanvasTM = new gfxMatrix(tm);
}
return *mCanvasTM;
}
NS_IMETHODIMP
nsSVGGFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
{
if (aNameSpaceID == kNameSpaceID_None &&
aAttribute == nsGkAtoms::transform) {
nsSVGUtils::InvalidateBounds(this, false);
nsSVGUtils::ScheduleReflowSVG(this);
NotifySVGChanged(TRANSFORM_CHANGED);
}
return NS_OK;
}
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