1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include "nsSVGGFrame.h"
9 // Keep others in (case-insensitive) order:
10 #include "nsGkAtoms.h"
11 #include "SVGTransformableElement.h"
13 #include "SVGGraphicsElement.h"
14 #include "nsSVGIntegrationUtils.h"
15 #include "nsSVGUtils.h"
17 using namespace mozilla::dom
;
19 //----------------------------------------------------------------------
23 NS_NewSVGGFrame(nsIPresShell
* aPresShell
, nsStyleContext
* aContext
)
25 return new (aPresShell
) nsSVGGFrame(aContext
);
28 NS_IMPL_FRAMEARENA_HELPERS(nsSVGGFrame
)
32 nsSVGGFrame::Init(nsIContent
* aContent
,
34 nsIFrame
* aPrevInFlow
)
36 NS_ASSERTION(aContent
->IsSVG() &&
37 static_cast<nsSVGElement
*>(aContent
)->IsTransformable(),
38 "The element doesn't support nsIDOMSVGTransformable");
40 nsSVGGFrameBase::Init(aContent
, aParent
, aPrevInFlow
);
45 nsSVGGFrame::GetType() const
47 return nsGkAtoms::svgGFrame
;
50 //----------------------------------------------------------------------
51 // nsISVGChildFrame methods
54 nsSVGGFrame::NotifySVGChanged(uint32_t aFlags
)
56 NS_ABORT_IF_FALSE(aFlags
& (TRANSFORM_CHANGED
| COORD_CONTEXT_CHANGED
),
57 "Invalidation logic may need adjusting");
59 if (aFlags
& TRANSFORM_CHANGED
) {
60 // make sure our cached transform matrix gets (lazily) updated
64 nsSVGGFrameBase::NotifySVGChanged(aFlags
);
68 nsSVGGFrame::GetCanvasTM(uint32_t aFor
)
70 if (!(GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD
)) {
71 if ((aFor
== FOR_PAINTING
&& NS_SVGDisplayListPaintingEnabled()) ||
72 (aFor
== FOR_HIT_TESTING
&& NS_SVGDisplayListHitTestingEnabled())) {
73 return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this);
77 NS_ASSERTION(mParent
, "null parent");
79 nsSVGContainerFrame
*parent
= static_cast<nsSVGContainerFrame
*>(mParent
);
80 SVGGraphicsElement
*content
= static_cast<SVGGraphicsElement
*>(mContent
);
82 gfxMatrix tm
= content
->PrependLocalTransformsTo(parent
->GetCanvasTM(aFor
));
84 mCanvasTM
= new gfxMatrix(tm
);
90 nsSVGGFrame::AttributeChanged(int32_t aNameSpaceID
,
94 if (aNameSpaceID
== kNameSpaceID_None
&&
95 aAttribute
== nsGkAtoms::transform
) {
96 // Don't invalidate (the layers code does that).
97 NotifySVGChanged(TRANSFORM_CHANGED
);