Line data    Source code

       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/. */
       5             : 
       6             : // Keep in (case-insensitive) order:
       7             : #include "nsContainerFrame.h"
       8             : #include "nsGkAtoms.h"
       9             : #include "nsIFrame.h"
      10             : #include "nsLiteralString.h"
      11             : #include "nsSVGEffects.h"
      12             : #include "nsSVGFilters.h"
      13             : 
      14             : /*
      15             :  * This frame is used by filter primitive elements that
      16             :  * have special child elements that provide parameters.
      17             :  */
      18           0 : class SVGFEContainerFrame : public nsContainerFrame
      19             : {
      20             :   friend nsIFrame*
      21             :   NS_NewSVGFEContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
      22             : protected:
      23           0 :   explicit SVGFEContainerFrame(nsStyleContext* aContext)
      24           0 :     : nsContainerFrame(aContext, kClassID)
      25             :   {
      26           0 :     AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
      27           0 :   }
      28             : 
      29             : public:
      30           0 :   NS_DECL_FRAMEARENA_HELPERS(SVGFEContainerFrame)
      31             : 
      32           0 :   virtual bool IsFrameOfType(uint32_t aFlags) const override
      33             :   {
      34           0 :     return nsContainerFrame::IsFrameOfType(
      35           0 :             aFlags & ~(nsIFrame::eSVG | nsIFrame::eSVGContainer));
      36             :   }
      37             : 
      38             : #ifdef DEBUG_FRAME_DUMP
      39           0 :   virtual nsresult GetFrameName(nsAString& aResult) const override
      40             :   {
      41           0 :     return MakeFrameName(NS_LITERAL_STRING("SVGFEContainer"), aResult);
      42             :   }
      43             : #endif
      44             : 
      45             : #ifdef DEBUG
      46             :   virtual void Init(nsIContent*       aContent,
      47             :                     nsContainerFrame* aParent,
      48             :                     nsIFrame*         aPrevInFlow) override;
      49             : #endif
      50             : 
      51             :   virtual nsresult AttributeChanged(int32_t  aNameSpaceID,
      52             :                                     nsIAtom* aAttribute,
      53             :                                     int32_t  aModType) override;
      54             : 
      55           0 :   virtual bool ComputeCustomOverflow(nsOverflowAreas& aOverflowAreas) override {
      56             :     // We don't maintain a visual overflow rect
      57           0 :     return false;
      58             :   }
      59             : };
      60             : 
      61             : nsIFrame*
      62           0 : NS_NewSVGFEContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
      63             : {
      64           0 :   return new (aPresShell) SVGFEContainerFrame(aContext);
      65             : }
      66             : 
      67           0 : NS_IMPL_FRAMEARENA_HELPERS(SVGFEContainerFrame)
      68             : 
      69             : #ifdef DEBUG
      70             : void
      71           0 : SVGFEContainerFrame::Init(nsIContent*       aContent,
      72             :                           nsContainerFrame* aParent,
      73             :                           nsIFrame*         aPrevInFlow)
      74             : {
      75           0 :   NS_ASSERTION(aContent->IsNodeOfType(nsINode::eFILTER),
      76             :                "Trying to construct an SVGFEContainerFrame for a "
      77             :                "content element that doesn't support the right interfaces");
      78             : 
      79           0 :   nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
      80           0 : }
      81             : #endif /* DEBUG */
      82             : 
      83             : nsresult
      84           0 : SVGFEContainerFrame::AttributeChanged(int32_t  aNameSpaceID,
      85             :                                       nsIAtom* aAttribute,
      86             :                                       int32_t  aModType)
      87             : {
      88           0 :   nsSVGFE *element = static_cast<nsSVGFE*>(mContent);
      89           0 :   if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
      90           0 :     MOZ_ASSERT(GetParent()->IsSVGFilterFrame(),
      91             :                "Observers observe the filter, so that's what we must invalidate");
      92           0 :     nsSVGEffects::InvalidateDirectRenderingObservers(GetParent());
      93             :   }
      94             : 
      95           0 :   return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
      96             : }