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 "nsContentUtils.h"
michael@0: #include "nsFrame.h"
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsLiteralString.h"
michael@0: #include "nsSVGEffects.h"
michael@0: #include "nsSVGFilters.h"
michael@0: #include "mozilla/dom/SVGFEImageElement.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: typedef nsFrame SVGFEImageFrameBase;
michael@0: 
michael@0: class SVGFEImageFrame : public SVGFEImageFrameBase
michael@0: {
michael@0:   friend nsIFrame*
michael@0:   NS_NewSVGFEImageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
michael@0: protected:
michael@0:   SVGFEImageFrame(nsStyleContext* aContext)
michael@0:     : SVGFEImageFrameBase(aContext)
michael@0:   {
michael@0:     AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
michael@0:   }
michael@0: 
michael@0: public:
michael@0:   NS_DECL_FRAMEARENA_HELPERS
michael@0: 
michael@0:   virtual void Init(nsIContent* aContent,
michael@0:                     nsIFrame*   aParent,
michael@0:                     nsIFrame*   aPrevInFlow) MOZ_OVERRIDE;
michael@0:   virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
michael@0:   {
michael@0:     return SVGFEImageFrameBase::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("SVGFEImage"), aResult);
michael@0:   }
michael@0: #endif
michael@0: 
michael@0:   /**
michael@0:    * Get the "type" of the frame
michael@0:    *
michael@0:    * @see nsGkAtoms::svgFEImageFrame
michael@0:    */
michael@0:   virtual nsIAtom* GetType() const 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:   virtual bool UpdateOverflow() MOZ_OVERRIDE {
michael@0:     // We don't maintain a visual overflow rect
michael@0:     return false;
michael@0:   }
michael@0: };
michael@0: 
michael@0: nsIFrame*
michael@0: NS_NewSVGFEImageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) SVGFEImageFrame(aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(SVGFEImageFrame)
michael@0: 
michael@0: /* virtual */ void
michael@0: SVGFEImageFrame::DestroyFrom(nsIFrame* aDestructRoot)
michael@0: {
michael@0:   nsCOMPtr<nsIImageLoadingContent> imageLoader =
michael@0:     do_QueryInterface(SVGFEImageFrameBase::mContent);
michael@0: 
michael@0:   if (imageLoader) {
michael@0:     imageLoader->FrameDestroyed(this);
michael@0:     imageLoader->DecrementVisibleCount();
michael@0:   }
michael@0: 
michael@0:   SVGFEImageFrameBase::DestroyFrom(aDestructRoot);
michael@0: }
michael@0: 
michael@0: void
michael@0: SVGFEImageFrame::Init(nsIContent* aContent,
michael@0:                         nsIFrame* aParent,
michael@0:                         nsIFrame* aPrevInFlow)
michael@0: {
michael@0:   NS_ASSERTION(aContent->IsSVG(nsGkAtoms::feImage),
michael@0:                "Trying to construct an SVGFEImageFrame for a "
michael@0:                "content element that doesn't support the right interfaces");
michael@0: 
michael@0:   SVGFEImageFrameBase::Init(aContent, aParent, aPrevInFlow);
michael@0:   nsCOMPtr<nsIImageLoadingContent> imageLoader =
michael@0:     do_QueryInterface(SVGFEImageFrameBase::mContent);
michael@0: 
michael@0:   if (imageLoader) {
michael@0:     // We assume that feImage's are always visible.
michael@0:     // Increment the visible count before calling FrameCreated so that
michael@0:     // FrameCreated will actually track the image correctly.
michael@0:     imageLoader->IncrementVisibleCount();
michael@0:     imageLoader->FrameCreated(this);
michael@0:   }
michael@0: }
michael@0: 
michael@0: nsIAtom *
michael@0: SVGFEImageFrame::GetType() const
michael@0: {
michael@0:   return nsGkAtoms::svgFEImageFrame;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: SVGFEImageFrame::AttributeChanged(int32_t  aNameSpaceID,
michael@0:                                   nsIAtom* aAttribute,
michael@0:                                   int32_t  aModType)
michael@0: {
michael@0:   SVGFEImageElement *element = static_cast<SVGFEImageElement*>(mContent);
michael@0:   if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
michael@0:     nsSVGEffects::InvalidateRenderingObservers(this);
michael@0:   }
michael@0:   if (aNameSpaceID == kNameSpaceID_XLink &&
michael@0:       aAttribute == nsGkAtoms::href) {
michael@0: 
michael@0:     // Prevent setting image.src by exiting early
michael@0:     if (nsContentUtils::IsImageSrcSetDisabled()) {
michael@0:       return NS_OK;
michael@0:     }
michael@0: 
michael@0:     if (element->mStringAttributes[SVGFEImageElement::HREF].IsExplicitlySet()) {
michael@0:       element->LoadSVGImage(true, true);
michael@0:     } else {
michael@0:       element->CancelImageRequests(true);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return SVGFEImageFrameBase::AttributeChanged(aNameSpaceID,
michael@0:                                                  aAttribute, aModType);
michael@0: }