1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is the Mozilla SVG project.
16 : *
17 : * The Initial Developer of the Original Code is Robert Longson.
18 : * Portions created by the Initial Developer are Copyright (C) 2011
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : *
23 : * Alternatively, the contents of this file may be used under the terms of
24 : * either the GNU General Public License Version 2 or later (the "GPL"), or
25 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
26 : * in which case the provisions of the GPL or the LGPL are applicable instead
27 : * of those above. If you wish to allow use of your version of this file only
28 : * under the terms of either the GPL or the LGPL, and not to allow others to
29 : * use your version of this file under the terms of the MPL, indicate your
30 : * decision by deleting the provisions above and replace them with the notice
31 : * and other provisions required by the GPL or the LGPL. If you do not delete
32 : * the provisions above, a recipient may use your version of this file under
33 : * the terms of any one of the MPL, the GPL or the LGPL.
34 : *
35 : * ***** END LICENSE BLOCK ***** */
36 :
37 : #include "nsFrame.h"
38 : #include "nsSVGEffects.h"
39 : #include "nsSVGFilters.h"
40 : #include "nsContentUtils.h"
41 : #include "nsImageLoadingContent.h"
42 :
43 : using namespace mozilla;
44 :
45 : typedef nsFrame SVGFEImageFrameBase;
46 :
47 : class SVGFEImageFrame : public SVGFEImageFrameBase
48 0 : {
49 : friend nsIFrame*
50 : NS_NewSVGFEImageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
51 : protected:
52 0 : SVGFEImageFrame(nsStyleContext* aContext) : SVGFEImageFrameBase(aContext) {}
53 :
54 : public:
55 : NS_DECL_FRAMEARENA_HELPERS
56 :
57 : NS_IMETHOD Init(nsIContent* aContent,
58 : nsIFrame* aParent,
59 : nsIFrame* aPrevInFlow);
60 : virtual void DestroyFrom(nsIFrame* aDestructRoot);
61 :
62 0 : virtual bool IsFrameOfType(PRUint32 aFlags) const
63 : {
64 0 : return SVGFEImageFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG));
65 : }
66 :
67 : #ifdef DEBUG
68 0 : NS_IMETHOD GetFrameName(nsAString& aResult) const
69 : {
70 0 : return MakeFrameName(NS_LITERAL_STRING("SVGFEImage"), aResult);
71 : }
72 : #endif
73 :
74 : virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext);
75 :
76 : /**
77 : * Get the "type" of the frame
78 : *
79 : * @see nsGkAtoms::svgFEImageFrame
80 : */
81 : virtual nsIAtom* GetType() const;
82 :
83 : NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
84 : nsIAtom* aAttribute,
85 : PRInt32 aModType);
86 : };
87 :
88 : nsIFrame*
89 0 : NS_NewSVGFEImageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
90 : {
91 0 : return new (aPresShell) SVGFEImageFrame(aContext);
92 : }
93 :
94 0 : NS_IMPL_FRAMEARENA_HELPERS(SVGFEImageFrame)
95 :
96 : /* virtual */ void
97 0 : SVGFEImageFrame::DidSetStyleContext(nsStyleContext* aOldStyleContext)
98 : {
99 0 : SVGFEImageFrameBase::DidSetStyleContext(aOldStyleContext);
100 0 : nsSVGEffects::InvalidateRenderingObservers(this);
101 0 : }
102 :
103 : /* virtual */ void
104 0 : SVGFEImageFrame::DestroyFrom(nsIFrame* aDestructRoot)
105 : {
106 : nsCOMPtr<nsIImageLoadingContent> imageLoader =
107 0 : do_QueryInterface(SVGFEImageFrameBase::mContent);
108 :
109 0 : if (imageLoader) {
110 0 : imageLoader->FrameDestroyed(this);
111 : }
112 :
113 0 : SVGFEImageFrameBase::DestroyFrom(aDestructRoot);
114 0 : }
115 :
116 : NS_IMETHODIMP
117 0 : SVGFEImageFrame::Init(nsIContent* aContent,
118 : nsIFrame* aParent,
119 : nsIFrame* aPrevInFlow)
120 : {
121 : #ifdef DEBUG
122 0 : nsCOMPtr<nsIDOMSVGFEImageElement> elem = do_QueryInterface(aContent);
123 0 : NS_ASSERTION(elem,
124 : "Trying to construct an SVGFEImageFrame for a "
125 : "content element that doesn't support the right interfaces");
126 : #endif /* DEBUG */
127 :
128 0 : SVGFEImageFrameBase::Init(aContent, aParent, aPrevInFlow);
129 : nsCOMPtr<nsIImageLoadingContent> imageLoader =
130 0 : do_QueryInterface(SVGFEImageFrameBase::mContent);
131 :
132 0 : if (imageLoader) {
133 0 : imageLoader->FrameCreated(this);
134 : }
135 :
136 0 : return NS_OK;
137 : }
138 :
139 : nsIAtom *
140 0 : SVGFEImageFrame::GetType() const
141 : {
142 0 : return nsGkAtoms::svgFEImageFrame;
143 : }
144 :
145 : NS_IMETHODIMP
146 0 : SVGFEImageFrame::AttributeChanged(PRInt32 aNameSpaceID,
147 : nsIAtom* aAttribute,
148 : PRInt32 aModType)
149 : {
150 0 : nsSVGFEImageElement *element = static_cast<nsSVGFEImageElement*>(mContent);
151 0 : if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
152 0 : nsSVGEffects::InvalidateRenderingObservers(this);
153 : }
154 0 : if (aNameSpaceID == kNameSpaceID_XLink &&
155 : aAttribute == nsGkAtoms::href) {
156 :
157 : // Prevent setting image.src by exiting early
158 0 : if (nsContentUtils::IsImageSrcSetDisabled()) {
159 0 : return NS_OK;
160 : }
161 :
162 0 : if (element->mStringAttributes[nsSVGFEImageElement::HREF].IsExplicitlySet()) {
163 0 : element->LoadSVGImage(true, true);
164 : } else {
165 0 : element->CancelImageRequests(true);
166 : }
167 : }
168 :
169 : return SVGFEImageFrameBase::AttributeChanged(aNameSpaceID,
170 0 : aAttribute, aModType);
171 : }
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