michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: // Keep in (case-insensitive) order:
michael@0: #include "nsFrame.h"
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsStyleContext.h"
michael@0: #include "nsSVGEffects.h"
michael@0: 
michael@0: // This is a very simple frame whose only purpose is to capture style change
michael@0: // events and propagate them to the parent.  Most of the heavy lifting is done
michael@0: // within the nsSVGGradientFrame, which is the parent for this frame
michael@0: 
michael@0: typedef nsFrame  nsSVGStopFrameBase;
michael@0: 
michael@0: class nsSVGStopFrame : public nsSVGStopFrameBase
michael@0: {
michael@0:   friend nsIFrame*
michael@0:   NS_NewSVGStopFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
michael@0: protected:
michael@0:   nsSVGStopFrame(nsStyleContext* aContext)
michael@0:     : nsSVGStopFrameBase(aContext)
michael@0:   {
michael@0:     AddStateBits(NS_FRAME_IS_NONDISPLAY);
michael@0:   }
michael@0: 
michael@0: public:
michael@0:   NS_DECL_FRAMEARENA_HELPERS
michael@0: 
michael@0:   // nsIFrame interface:
michael@0: #ifdef DEBUG
michael@0:   virtual void Init(nsIContent*      aContent,
michael@0:                     nsIFrame*        aParent,
michael@0:                     nsIFrame*        aPrevInFlow) MOZ_OVERRIDE;
michael@0: #endif
michael@0: 
michael@0:   void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
michael@0:                         const nsRect&           aDirtyRect,
michael@0:                         const nsDisplayListSet& aLists) MOZ_OVERRIDE {}
michael@0: 
michael@0:   virtual nsresult AttributeChanged(int32_t         aNameSpaceID,
michael@0:                                     nsIAtom*        aAttribute,
michael@0:                                     int32_t         aModType) MOZ_OVERRIDE;
michael@0: 
michael@0:   /**
michael@0:    * Get the "type" of the frame
michael@0:    *
michael@0:    * @see nsGkAtoms::svgStopFrame
michael@0:    */
michael@0:   virtual nsIAtom* GetType() const MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
michael@0:   {
michael@0:     return nsSVGStopFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG));
michael@0:   }
michael@0: 
michael@0: #ifdef DEBUG_FRAME_DUMP
michael@0:   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE
michael@0:   {
michael@0:     return MakeFrameName(NS_LITERAL_STRING("SVGStop"), aResult);
michael@0:   }
michael@0: #endif
michael@0: };
michael@0: 
michael@0: //----------------------------------------------------------------------
michael@0: // Implementation
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsSVGStopFrame)
michael@0: 
michael@0: //----------------------------------------------------------------------
michael@0: // nsIFrame methods:
michael@0: 
michael@0: #ifdef DEBUG
michael@0: void
michael@0: nsSVGStopFrame::Init(nsIContent* aContent,
michael@0:                      nsIFrame* aParent,
michael@0:                      nsIFrame* aPrevInFlow)
michael@0: {
michael@0:   NS_ASSERTION(aContent->IsSVG(nsGkAtoms::stop), "Content is not a stop element");
michael@0: 
michael@0:   nsSVGStopFrameBase::Init(aContent, aParent, aPrevInFlow);
michael@0: }
michael@0: #endif /* DEBUG */
michael@0: 
michael@0: nsIAtom *
michael@0: nsSVGStopFrame::GetType() const
michael@0: {
michael@0:   return nsGkAtoms::svgStopFrame;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsSVGStopFrame::AttributeChanged(int32_t         aNameSpaceID,
michael@0:                                  nsIAtom*        aAttribute,
michael@0:                                  int32_t         aModType)
michael@0: {
michael@0:   if (aNameSpaceID == kNameSpaceID_None &&
michael@0:       aAttribute == nsGkAtoms::offset) {
michael@0:     nsSVGEffects::InvalidateRenderingObservers(this);
michael@0:   }
michael@0: 
michael@0:   return nsSVGStopFrameBase::AttributeChanged(aNameSpaceID,
michael@0:                                               aAttribute, aModType);
michael@0: }
michael@0: 
michael@0: // -------------------------------------------------------------------------
michael@0: // Public functions
michael@0: // -------------------------------------------------------------------------
michael@0: 
michael@0: nsIFrame* NS_NewSVGStopFrame(nsIPresShell*   aPresShell,
michael@0:                              nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsSVGStopFrame(aContext);
michael@0: }