/src/mozilla-central/layout/svg/SVGFELeafFrame.cpp
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1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | // Keep in (case-insensitive) order: |
8 | | #include "nsContainerFrame.h" |
9 | | #include "nsFrame.h" |
10 | | #include "nsGkAtoms.h" |
11 | | #include "SVGObserverUtils.h" |
12 | | #include "nsSVGFilters.h" |
13 | | |
14 | | /* |
15 | | * This frame is used by filter primitive elements that don't |
16 | | * have special child elements that provide parameters. |
17 | | */ |
18 | | class SVGFELeafFrame final : public nsFrame |
19 | | { |
20 | | friend nsIFrame* |
21 | | NS_NewSVGFELeafFrame(nsIPresShell* aPresShell, ComputedStyle* aStyle); |
22 | | protected: |
23 | | explicit SVGFELeafFrame(ComputedStyle* aStyle) |
24 | | : nsFrame(aStyle, kClassID) |
25 | 0 | { |
26 | 0 | AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY); |
27 | 0 | } |
28 | | |
29 | | public: |
30 | | NS_DECL_FRAMEARENA_HELPERS(SVGFELeafFrame) |
31 | | |
32 | | #ifdef DEBUG |
33 | | virtual void Init(nsIContent* aContent, |
34 | | nsContainerFrame* aParent, |
35 | | nsIFrame* aPrevInFlow) override; |
36 | | #endif |
37 | | |
38 | | virtual bool IsFrameOfType(uint32_t aFlags) const override |
39 | 0 | { |
40 | 0 | if (aFlags & eSupportsContainLayoutAndPaint) { |
41 | 0 | return false; |
42 | 0 | } |
43 | 0 | |
44 | 0 | return nsFrame::IsFrameOfType(aFlags & ~(nsIFrame::eSVG)); |
45 | 0 | } |
46 | | |
47 | | #ifdef DEBUG_FRAME_DUMP |
48 | | virtual nsresult GetFrameName(nsAString& aResult) const override |
49 | | { |
50 | | return MakeFrameName(NS_LITERAL_STRING("SVGFELeaf"), aResult); |
51 | | } |
52 | | #endif |
53 | | |
54 | | virtual nsresult AttributeChanged(int32_t aNameSpaceID, |
55 | | nsAtom* aAttribute, |
56 | | int32_t aModType) override; |
57 | | |
58 | 0 | virtual bool ComputeCustomOverflow(nsOverflowAreas& aOverflowAreas) override { |
59 | 0 | // We don't maintain a visual overflow rect |
60 | 0 | return false; |
61 | 0 | } |
62 | | }; |
63 | | |
64 | | nsIFrame* |
65 | | NS_NewSVGFELeafFrame(nsIPresShell* aPresShell, ComputedStyle* aStyle) |
66 | 0 | { |
67 | 0 | return new (aPresShell) SVGFELeafFrame(aStyle); |
68 | 0 | } |
69 | | |
70 | | NS_IMPL_FRAMEARENA_HELPERS(SVGFELeafFrame) |
71 | | |
72 | | #ifdef DEBUG |
73 | | void |
74 | | SVGFELeafFrame::Init(nsIContent* aContent, |
75 | | nsContainerFrame* aParent, |
76 | | nsIFrame* aPrevInFlow) |
77 | | { |
78 | | NS_ASSERTION(aContent->IsNodeOfType(nsINode::eFILTER), |
79 | | "Trying to construct an SVGFELeafFrame for a " |
80 | | "content element that doesn't support the right interfaces"); |
81 | | |
82 | | nsFrame::Init(aContent, aParent, aPrevInFlow); |
83 | | } |
84 | | #endif /* DEBUG */ |
85 | | |
86 | | nsresult |
87 | | SVGFELeafFrame::AttributeChanged(int32_t aNameSpaceID, |
88 | | nsAtom* aAttribute, |
89 | | int32_t aModType) |
90 | 0 | { |
91 | 0 | nsSVGFE *element = static_cast<nsSVGFE*>(GetContent()); |
92 | 0 | if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) { |
93 | 0 | MOZ_ASSERT(GetParent()->IsSVGFilterFrame(), |
94 | 0 | "Observers observe the filter, so that's what we must invalidate"); |
95 | 0 | SVGObserverUtils::InvalidateDirectRenderingObservers(GetParent()); |
96 | 0 | } |
97 | 0 |
|
98 | 0 | return nsFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType); |
99 | 0 | } |