1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/svg/SVGFEImageFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,144 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +// Keep in (case-insensitive) order:
1.10 +#include "nsContentUtils.h"
1.11 +#include "nsFrame.h"
1.12 +#include "nsGkAtoms.h"
1.13 +#include "nsLiteralString.h"
1.14 +#include "nsSVGEffects.h"
1.15 +#include "nsSVGFilters.h"
1.16 +#include "mozilla/dom/SVGFEImageElement.h"
1.17 +
1.18 +using namespace mozilla;
1.19 +using namespace mozilla::dom;
1.20 +
1.21 +typedef nsFrame SVGFEImageFrameBase;
1.22 +
1.23 +class SVGFEImageFrame : public SVGFEImageFrameBase
1.24 +{
1.25 + friend nsIFrame*
1.26 + NS_NewSVGFEImageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
1.27 +protected:
1.28 + SVGFEImageFrame(nsStyleContext* aContext)
1.29 + : SVGFEImageFrameBase(aContext)
1.30 + {
1.31 + AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
1.32 + }
1.33 +
1.34 +public:
1.35 + NS_DECL_FRAMEARENA_HELPERS
1.36 +
1.37 + virtual void Init(nsIContent* aContent,
1.38 + nsIFrame* aParent,
1.39 + nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
1.40 + virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
1.41 +
1.42 + virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
1.43 + {
1.44 + return SVGFEImageFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG));
1.45 + }
1.46 +
1.47 +#ifdef DEBUG_FRAME_DUMP
1.48 + virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE
1.49 + {
1.50 + return MakeFrameName(NS_LITERAL_STRING("SVGFEImage"), aResult);
1.51 + }
1.52 +#endif
1.53 +
1.54 + /**
1.55 + * Get the "type" of the frame
1.56 + *
1.57 + * @see nsGkAtoms::svgFEImageFrame
1.58 + */
1.59 + virtual nsIAtom* GetType() const MOZ_OVERRIDE;
1.60 +
1.61 + virtual nsresult AttributeChanged(int32_t aNameSpaceID,
1.62 + nsIAtom* aAttribute,
1.63 + int32_t aModType) MOZ_OVERRIDE;
1.64 +
1.65 + virtual bool UpdateOverflow() MOZ_OVERRIDE {
1.66 + // We don't maintain a visual overflow rect
1.67 + return false;
1.68 + }
1.69 +};
1.70 +
1.71 +nsIFrame*
1.72 +NS_NewSVGFEImageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.73 +{
1.74 + return new (aPresShell) SVGFEImageFrame(aContext);
1.75 +}
1.76 +
1.77 +NS_IMPL_FRAMEARENA_HELPERS(SVGFEImageFrame)
1.78 +
1.79 +/* virtual */ void
1.80 +SVGFEImageFrame::DestroyFrom(nsIFrame* aDestructRoot)
1.81 +{
1.82 + nsCOMPtr<nsIImageLoadingContent> imageLoader =
1.83 + do_QueryInterface(SVGFEImageFrameBase::mContent);
1.84 +
1.85 + if (imageLoader) {
1.86 + imageLoader->FrameDestroyed(this);
1.87 + imageLoader->DecrementVisibleCount();
1.88 + }
1.89 +
1.90 + SVGFEImageFrameBase::DestroyFrom(aDestructRoot);
1.91 +}
1.92 +
1.93 +void
1.94 +SVGFEImageFrame::Init(nsIContent* aContent,
1.95 + nsIFrame* aParent,
1.96 + nsIFrame* aPrevInFlow)
1.97 +{
1.98 + NS_ASSERTION(aContent->IsSVG(nsGkAtoms::feImage),
1.99 + "Trying to construct an SVGFEImageFrame for a "
1.100 + "content element that doesn't support the right interfaces");
1.101 +
1.102 + SVGFEImageFrameBase::Init(aContent, aParent, aPrevInFlow);
1.103 + nsCOMPtr<nsIImageLoadingContent> imageLoader =
1.104 + do_QueryInterface(SVGFEImageFrameBase::mContent);
1.105 +
1.106 + if (imageLoader) {
1.107 + // We assume that feImage's are always visible.
1.108 + // Increment the visible count before calling FrameCreated so that
1.109 + // FrameCreated will actually track the image correctly.
1.110 + imageLoader->IncrementVisibleCount();
1.111 + imageLoader->FrameCreated(this);
1.112 + }
1.113 +}
1.114 +
1.115 +nsIAtom *
1.116 +SVGFEImageFrame::GetType() const
1.117 +{
1.118 + return nsGkAtoms::svgFEImageFrame;
1.119 +}
1.120 +
1.121 +nsresult
1.122 +SVGFEImageFrame::AttributeChanged(int32_t aNameSpaceID,
1.123 + nsIAtom* aAttribute,
1.124 + int32_t aModType)
1.125 +{
1.126 + SVGFEImageElement *element = static_cast<SVGFEImageElement*>(mContent);
1.127 + if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
1.128 + nsSVGEffects::InvalidateRenderingObservers(this);
1.129 + }
1.130 + if (aNameSpaceID == kNameSpaceID_XLink &&
1.131 + aAttribute == nsGkAtoms::href) {
1.132 +
1.133 + // Prevent setting image.src by exiting early
1.134 + if (nsContentUtils::IsImageSrcSetDisabled()) {
1.135 + return NS_OK;
1.136 + }
1.137 +
1.138 + if (element->mStringAttributes[SVGFEImageElement::HREF].IsExplicitlySet()) {
1.139 + element->LoadSVGImage(true, true);
1.140 + } else {
1.141 + element->CancelImageRequests(true);
1.142 + }
1.143 + }
1.144 +
1.145 + return SVGFEImageFrameBase::AttributeChanged(aNameSpaceID,
1.146 + aAttribute, aModType);
1.147 +}
